CA1274305A - Matrix address display apparatus - Google Patents
Matrix address display apparatusInfo
- Publication number
- CA1274305A CA1274305A CA000540164A CA540164A CA1274305A CA 1274305 A CA1274305 A CA 1274305A CA 000540164 A CA000540164 A CA 000540164A CA 540164 A CA540164 A CA 540164A CA 1274305 A CA1274305 A CA 1274305A
- Authority
- CA
- Canada
- Prior art keywords
- lines
- scanning
- signal
- display apparatus
- signal lines
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136259—Repairing; Defects
- G02F1/136272—Auxiliary lines
Abstract
ABSTRACT
A matrix address display apparatus comprises a pixel part having a plurality of display elements disposed in a matrix. A plurality of scanning lines are connected to the pixel part and scanning electrodes are connected to these scanning lines. A plurality of signal lines are also connected to the pixel part and signal electrodes are connected to these signal lines. A
conductive layer is provided and is insulated from the scanning lines and the signal lines and is disposed as a closed loop around the pixel part.
Connecting conductive parts, which are connected to the scanning lines or the signal lines are provided for selectively connecting the conductive layer disposed near the scanning electrodes and the signal electrodes. The closed loop conductive layer provides a "rescue line" which feeds display elements located at the cross points of the scanning and signal lines in those situations where the lines are broken for any reason. The particular arrangement of the invention avoids manufacturing and wiring problems associated with the provision of such "rescue lines" in prior art arrangements.
A matrix address display apparatus comprises a pixel part having a plurality of display elements disposed in a matrix. A plurality of scanning lines are connected to the pixel part and scanning electrodes are connected to these scanning lines. A plurality of signal lines are also connected to the pixel part and signal electrodes are connected to these signal lines. A
conductive layer is provided and is insulated from the scanning lines and the signal lines and is disposed as a closed loop around the pixel part.
Connecting conductive parts, which are connected to the scanning lines or the signal lines are provided for selectively connecting the conductive layer disposed near the scanning electrodes and the signal electrodes. The closed loop conductive layer provides a "rescue line" which feeds display elements located at the cross points of the scanning and signal lines in those situations where the lines are broken for any reason. The particular arrangement of the invention avoids manufacturing and wiring problems associated with the provision of such "rescue lines" in prior art arrangements.
Description
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The present invention relates to a matrix address display apparatus such as a liquid crystal display apparatus.
In prior art displays of this type, i-t has been attempted to provide "rescue lines" to feed display elements located at the cross points of the scanning lines and signal lines, in those situations where the lines are "broken". For reasons which will be discussed more Eully below, this has led to wiring and manufacturing problems, which the present invention seeks to avoid.
Thus, according to the present invention, there is provided a matrix address display apparatus comprising:
a pixel part having a plurality of display elements disposed in a matrix. Scanning lines are connected to the pixel part and scanning electrodes are connected to the scanning lines. Signal lines are also connected to the pixel part and signal electrodes are connected to the signal line. A conductive layer is insulated from the scanning lines and - the signal lines and is disposed as a closed loop around the pixel part.
Connecting conductive parts are connected to the scanning line or the signal line, for selectively connecting the conductive layer disposed near the scanning electrodes and the signal electrodes.
The invention will now be described further by way of example only and with reference to the accompanying drawings, wherein:
Fig. 1 is a plan view showing the structure of a matrix type display apparatus of the prior art;
Fig. 2 is a plan view showing the "rescue" provisions for breakage of the matrix type display apparatus of Fig. 1:
Fig. 3 is a plan view of a matrix type display apparatus according to a first embodiment of the present invention;
Fig. ~ is a plan view of a matrix type display apparatus according to a second embodiment of the present invention, Fig. 5 is a partial enlarged view of a matrix type display apparatus according to a fourth embodiment of the present invention;
Fig. 6A is a sectional view taken along the line A-A' of Fig. 5;
Fig. 6B is a sectional view taken along the line B-B' of Fig. 5;
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~27~ 5 Fig. 7 is a sectional view of a thin film transistor used in a matrix address display apparatus according to a fifth embodiment of the present invention;
Fig. 8 is a sectional view o~ a thin film transistor used in a matrix address display apparatus according to a sixth embodiment of the present invention;
Fig. 9 is a partial plan view of a matrix address display apparatus according to a seventh embodiment, Fig. 10A is a sectional view taken along the line A-A' of Fig. 9; and Fig. 10B is a sectional view taken along the line B-B' of Fig. 9.
Referring now to the drawings, Fig. 1 shows the structure of a matrix address display apparatus of the prior art. The matrix type display apparatus has 2n hori70ntal scanning lines 1 and 2m vertical signal lines
The present invention relates to a matrix address display apparatus such as a liquid crystal display apparatus.
In prior art displays of this type, i-t has been attempted to provide "rescue lines" to feed display elements located at the cross points of the scanning lines and signal lines, in those situations where the lines are "broken". For reasons which will be discussed more Eully below, this has led to wiring and manufacturing problems, which the present invention seeks to avoid.
Thus, according to the present invention, there is provided a matrix address display apparatus comprising:
a pixel part having a plurality of display elements disposed in a matrix. Scanning lines are connected to the pixel part and scanning electrodes are connected to the scanning lines. Signal lines are also connected to the pixel part and signal electrodes are connected to the signal line. A conductive layer is insulated from the scanning lines and - the signal lines and is disposed as a closed loop around the pixel part.
Connecting conductive parts are connected to the scanning line or the signal line, for selectively connecting the conductive layer disposed near the scanning electrodes and the signal electrodes.
The invention will now be described further by way of example only and with reference to the accompanying drawings, wherein:
Fig. 1 is a plan view showing the structure of a matrix type display apparatus of the prior art;
Fig. 2 is a plan view showing the "rescue" provisions for breakage of the matrix type display apparatus of Fig. 1:
Fig. 3 is a plan view of a matrix type display apparatus according to a first embodiment of the present invention;
Fig. ~ is a plan view of a matrix type display apparatus according to a second embodiment of the present invention, Fig. 5 is a partial enlarged view of a matrix type display apparatus according to a fourth embodiment of the present invention;
Fig. 6A is a sectional view taken along the line A-A' of Fig. 5;
Fig. 6B is a sectional view taken along the line B-B' of Fig. 5;
~ PAT 11140-1 :
. , .
~27~ 5 Fig. 7 is a sectional view of a thin film transistor used in a matrix address display apparatus according to a fifth embodiment of the present invention;
Fig. 8 is a sectional view o~ a thin film transistor used in a matrix address display apparatus according to a sixth embodiment of the present invention;
Fig. 9 is a partial plan view of a matrix address display apparatus according to a seventh embodiment, Fig. 10A is a sectional view taken along the line A-A' of Fig. 9; and Fig. 10B is a sectional view taken along the line B-B' of Fig. 9.
Referring now to the drawings, Fig. 1 shows the structure of a matrix address display apparatus of the prior art. The matrix type display apparatus has 2n hori70ntal scanning lines 1 and 2m vertical signal lines
2. The matrix type display apparatus has display elements such as liquid crystal cells or electroluminescence cells on the cross points of the scanning lines 1 and the signal lines 2.
When one of the lines 1 is "broken", as at the point 3 shown in Fig. 2, the signal does not reach the display elements which are provided beyond the break point 3. Thus, the break point 3 causes quality deterioration of a displayed image. In the prior art in such case, the signal is fed to the broken scanning line 1 from a rescue terminal 4' for feeding the signal to the broken section of the scanning line 1. Referring still to Fig. 2, one end of a rescue line 8 is connected to wiring 6 to which a signal is fed by connection means 7 and another end of the rescue line 8 is connected to the rescue terminal 4' by connection means 9 and connecting wiring 10.
- Therefore, the signal can be fed to the rescue terminal 4'.
When the electrode terminals 4 and 5 are made as large as possible Eor obtaining easy connection of the wires 6, the rescue terminals 4' become small. Such small rescue terminals 4' makes actual wiring of line 10 difficult.
Precisely the same arrangement and consequent drawbacks apply to rescue terminals 5' provided for vertical lines 2.
It is desirable that the rescue line 8 be provided on the image display apparatus 11, but the problem is that rescue line 8 has a tendency to : , . :
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.
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short-circuit with the wiring of the lines 6. Therefore, the wiring process becomes difficult.
Fig. 3 shows the structure of a matrix address display apparatus embodying the present invention. The matrix address display apparatus has 2n scanning lines 1 and 2m signal lines 2 which are provided at right angles to the scanning lines 1. The matrix type display apparatus has, as a display, a plurality of elements such as liquid crystal cells or electroluminescence cells on each cross point of the scanning lines 1 and the signal lines 2, thereby forming a pixel part. Conductive parts 12 are ; 10 provided at both ends of the scanning lines 1. Conductive parts 13 are provided at both ends of the signal lines 2. A rescue line 15 is provided surrounding the pixel part.
When one of the lines 1 is "brolcen" at a point 3, the conductive part 12 provided on one end of bro~en scanning line 1 and the rescue line 15 are connected by a conductor 14 used as a connecting means. The conductive part 12 provided on the other end of broken scanning line 1 and the rescue line 15 are also connected by a conductor 14. Therefore, the signal can be fed to the broken scanning line 1 through the rescue line 15.
The conductor 14 can be formed by known wirebonding of A1 wire, Au wire, or the like. In such a case, the conductive parts 12 and 13 used as bonding pads generally have A1 layers on top, and at least a si~e of about 100 micrometer x 100 micrometer which is sufficient in this embodiment.
Some branch lines 16, which are connected to the rescue line 15, are preferably provided for use in other embodiments. In the case of using wire-bonding, the conductive part having A1 layer on top is provided at the end of the branch line 16.
The rescue line 15 mus~ be provided out of the way of the pixel part ; wherein the pattern of the scanning lines 1 and the signal lines 2 cross and the display elements are provided. Therefore, it is suitable tha~ the rescue line 15 be provided between the periphery of electrodes 4, 5 and the pixel part, since the rescue operation for the broken lines can be carried out independently of the connectln~ operation of the electrodes 4, 5 and the outer circuit. It is suitable that the rescue line 15 and the branch line 16 have exposed conductive parts on which the conductor 14 is provided for rescue. For avoiding short-circuits upon connecting the electrodes 4, 5 and :.
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- ~ ' - ' ~ . ' ' . ' ' . . ' ' ' ' ~Z7~3V5 the outer circuit, the peripheral part of the display apparatus 11 must not have exposed conductive parts other than the electrodes 4 and 5.
Fig. 4 shows a matrix address display apparatus accordlng to a second embodiment of the present invention. In this embodiment disconnection parts 17 are provided for dividing the rescue line into two rescue lines 18 and 18'. As a result of the dividing of the rescue line, two break points 3 can be rescued as shown in Fig. 4. Further, the floating capacitances generated in the cross points of the rescue line and lines 1 and 2 are reduced.
In a third embodiment (not shown), for simplification of the manu~acturing process, the rescue line is formed simultaneously with the scanning lines 1 or the signal lines 2. In the case where the scanning lines 1 and the signal lines 2 are formed on one substrate, an insulating layer for insulating both lines 1 and 2 is necessary. Therefore, it is easy to form the rescue line simultaneously with the scanning lines 1 or the signal lines 2. For obtaining small resistance, the rescue line 18 is snade of a lower resistance material placed between the signal line and the scanning line.
Figs. 5, 6A and 6B shows a fourth embodiment of the present invention.
Fig. S is a plan view, Fig. 6A is a sectional view taken along the line A-A' of Fig. 5, and Fig. 6B is a sectional view taken along the line B-B' of Fig. S. In Fig. 6A, on a glass substrate 23 an insulating layer 25 is formed. An insulating layer 20, which has openings 21, is provided on the insulating layer 25. A conductive connecting line 19 is provided under the insulating layer 20a between the two openings 21, 21. The signal line 2 is formed in the openings and on the insulating layer 20. The rescue line 15 is formed on the insulating layer 20a. As described above, the signal electrode 5 and the signal line 2 are connected and the rescue line 15 is formed in such a manrler that the rescue line is insulated from the scanning line 1 and the signal line 2 (Figs. 6A and 6B). The signal line 2 and the rescue line 15 may be of the same material (e.g. A1) and may be simultaneously formed. The connecting line 22 between the signal electrode S and the signal line 2 may not be positioned on top of the substrate.
However, when one part of the connecting line 22 is exposed (provided on top of the substrate), the exposed part can be used as the conductive part 13 forming a bonding pad for a rescue operation (see Fig. S).
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The insulating layer 20 is simultaneously formed as the insulating layer for pixel part 24. The conductive connecting line 19 is simultaneo~lsly formed with the scanning line 1. Therefore, additional processing is not necessary for forming the insulating layer 20 and the conductive connecting line 19. The structure shown in Fig. 6A can be applied to the scanning line 1.
Fig. 7 shows a sectional view of a thin film transistor used in a matrix address display apparatus according to a fifth embodiment of the invention. SiO2 film 25 is formed on a glass substrate 23. The scanning line 1 is used as a gate of the transistor. A gate insulating fil.m 20 of Si3N4 is formed on the gate 1. Amorphous Si film 26, which includes very little impurity, is formed on the gate insulating film 20. Numerals 2 and 2' designate Al source-drain wiring. Amorphous Si film 27 doped with a large quantity of impurity is formed for improving the ohmic contact of the wiring 2 and 2' and the amorphous Si film 26. A protective film 28 of Si3N4 is formed for protecting the amorphous Si film 26 from the air. The source-drain wiring 2 operates as the signal line 2 and the source-drain wiring 2' operates as the wiring 2' for connecting transparent electrodes such as Indium-Tin-Oxide (ITO) electrodes.
In this embodiment, the gate insulating film 20 is sirnultaneously formed and is the same material as the insulating layer of Figs. 6A and 6B.
Fig. 8 shows a sectional view of a thin film transistor used in a matrix address display apparatus according to a sixth embodiment of the invention. In this embodiment, a protecting film Z9 ls formed for protecting the amorphous Si film 26 (including li~uid crystal) which forms a channel region. The protect film 29 can be made from inorganic material such as Si3N4 or organic material such as polyimide. In this embodiment, the structure made by the signal line 2, the connecting conductive line 19 and the insulating layer 20 (see Fig. 6A), can be formed by using the signal lines 2 and 2' and the protective film 29.
Fig. 9 is a partial plan view of a matrix address display apparatus according to a seventh embodiment of the invention. Fig. lOA is a sectional view taken along the line A-A' of Fig. 9 and Fig. lOB is a sectional view taken along the line B-B' of Fig. 9. In this embodiment, the scanning lines ~.
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1 are formed on a substratP 30 and the signal lines 2 are formed on another substrate 31. The scanning lines 1 and signal llnes 2 are of transparent conductive film such as IT0. The substrates 30 and 31 are put together with predetermined gap 32 therebetween wherein the liquid crystal is introduced.
A sealing member 33 is provided between the substrates 30 and 31.
A carbon-rich resin cornposltion 34 is formed on the scanning electrode 4 for connecting the scanning line 1 to the scanning electrode 4. The insulating layer 20 is formed for insulating the rescue line 15 from the , scanning electrodes 4 and the signal electrodes 5. For the insulating layer 20, SiO2, Si3N4 or polyimide resin may be used. In the insulating layer 20, openings are formed for the conductive parts 12 and 13. When one of the lines 1 or 2 is broken, the conductive parts 12 or 13 are connected to the rescue line 15, thereby restoring the designed function.
Although the invention has been described in its preferred form with a certain degree of particularity, it is understood that the present disclosure of the preferred form can be changed in the details of construction and the combination and arrangement of parts may be modified without departing from the spirit and the scope of the invention as hereinafter claimed.
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When one of the lines 1 is "broken", as at the point 3 shown in Fig. 2, the signal does not reach the display elements which are provided beyond the break point 3. Thus, the break point 3 causes quality deterioration of a displayed image. In the prior art in such case, the signal is fed to the broken scanning line 1 from a rescue terminal 4' for feeding the signal to the broken section of the scanning line 1. Referring still to Fig. 2, one end of a rescue line 8 is connected to wiring 6 to which a signal is fed by connection means 7 and another end of the rescue line 8 is connected to the rescue terminal 4' by connection means 9 and connecting wiring 10.
- Therefore, the signal can be fed to the rescue terminal 4'.
When the electrode terminals 4 and 5 are made as large as possible Eor obtaining easy connection of the wires 6, the rescue terminals 4' become small. Such small rescue terminals 4' makes actual wiring of line 10 difficult.
Precisely the same arrangement and consequent drawbacks apply to rescue terminals 5' provided for vertical lines 2.
It is desirable that the rescue line 8 be provided on the image display apparatus 11, but the problem is that rescue line 8 has a tendency to : , . :
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.
. . .
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short-circuit with the wiring of the lines 6. Therefore, the wiring process becomes difficult.
Fig. 3 shows the structure of a matrix address display apparatus embodying the present invention. The matrix address display apparatus has 2n scanning lines 1 and 2m signal lines 2 which are provided at right angles to the scanning lines 1. The matrix type display apparatus has, as a display, a plurality of elements such as liquid crystal cells or electroluminescence cells on each cross point of the scanning lines 1 and the signal lines 2, thereby forming a pixel part. Conductive parts 12 are ; 10 provided at both ends of the scanning lines 1. Conductive parts 13 are provided at both ends of the signal lines 2. A rescue line 15 is provided surrounding the pixel part.
When one of the lines 1 is "brolcen" at a point 3, the conductive part 12 provided on one end of bro~en scanning line 1 and the rescue line 15 are connected by a conductor 14 used as a connecting means. The conductive part 12 provided on the other end of broken scanning line 1 and the rescue line 15 are also connected by a conductor 14. Therefore, the signal can be fed to the broken scanning line 1 through the rescue line 15.
The conductor 14 can be formed by known wirebonding of A1 wire, Au wire, or the like. In such a case, the conductive parts 12 and 13 used as bonding pads generally have A1 layers on top, and at least a si~e of about 100 micrometer x 100 micrometer which is sufficient in this embodiment.
Some branch lines 16, which are connected to the rescue line 15, are preferably provided for use in other embodiments. In the case of using wire-bonding, the conductive part having A1 layer on top is provided at the end of the branch line 16.
The rescue line 15 mus~ be provided out of the way of the pixel part ; wherein the pattern of the scanning lines 1 and the signal lines 2 cross and the display elements are provided. Therefore, it is suitable tha~ the rescue line 15 be provided between the periphery of electrodes 4, 5 and the pixel part, since the rescue operation for the broken lines can be carried out independently of the connectln~ operation of the electrodes 4, 5 and the outer circuit. It is suitable that the rescue line 15 and the branch line 16 have exposed conductive parts on which the conductor 14 is provided for rescue. For avoiding short-circuits upon connecting the electrodes 4, 5 and :.
'., ., ',' .
- ~ ' - ' ~ . ' ' . ' ' . . ' ' ' ' ~Z7~3V5 the outer circuit, the peripheral part of the display apparatus 11 must not have exposed conductive parts other than the electrodes 4 and 5.
Fig. 4 shows a matrix address display apparatus accordlng to a second embodiment of the present invention. In this embodiment disconnection parts 17 are provided for dividing the rescue line into two rescue lines 18 and 18'. As a result of the dividing of the rescue line, two break points 3 can be rescued as shown in Fig. 4. Further, the floating capacitances generated in the cross points of the rescue line and lines 1 and 2 are reduced.
In a third embodiment (not shown), for simplification of the manu~acturing process, the rescue line is formed simultaneously with the scanning lines 1 or the signal lines 2. In the case where the scanning lines 1 and the signal lines 2 are formed on one substrate, an insulating layer for insulating both lines 1 and 2 is necessary. Therefore, it is easy to form the rescue line simultaneously with the scanning lines 1 or the signal lines 2. For obtaining small resistance, the rescue line 18 is snade of a lower resistance material placed between the signal line and the scanning line.
Figs. 5, 6A and 6B shows a fourth embodiment of the present invention.
Fig. S is a plan view, Fig. 6A is a sectional view taken along the line A-A' of Fig. 5, and Fig. 6B is a sectional view taken along the line B-B' of Fig. S. In Fig. 6A, on a glass substrate 23 an insulating layer 25 is formed. An insulating layer 20, which has openings 21, is provided on the insulating layer 25. A conductive connecting line 19 is provided under the insulating layer 20a between the two openings 21, 21. The signal line 2 is formed in the openings and on the insulating layer 20. The rescue line 15 is formed on the insulating layer 20a. As described above, the signal electrode 5 and the signal line 2 are connected and the rescue line 15 is formed in such a manrler that the rescue line is insulated from the scanning line 1 and the signal line 2 (Figs. 6A and 6B). The signal line 2 and the rescue line 15 may be of the same material (e.g. A1) and may be simultaneously formed. The connecting line 22 between the signal electrode S and the signal line 2 may not be positioned on top of the substrate.
However, when one part of the connecting line 22 is exposed (provided on top of the substrate), the exposed part can be used as the conductive part 13 forming a bonding pad for a rescue operation (see Fig. S).
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The insulating layer 20 is simultaneously formed as the insulating layer for pixel part 24. The conductive connecting line 19 is simultaneo~lsly formed with the scanning line 1. Therefore, additional processing is not necessary for forming the insulating layer 20 and the conductive connecting line 19. The structure shown in Fig. 6A can be applied to the scanning line 1.
Fig. 7 shows a sectional view of a thin film transistor used in a matrix address display apparatus according to a fifth embodiment of the invention. SiO2 film 25 is formed on a glass substrate 23. The scanning line 1 is used as a gate of the transistor. A gate insulating fil.m 20 of Si3N4 is formed on the gate 1. Amorphous Si film 26, which includes very little impurity, is formed on the gate insulating film 20. Numerals 2 and 2' designate Al source-drain wiring. Amorphous Si film 27 doped with a large quantity of impurity is formed for improving the ohmic contact of the wiring 2 and 2' and the amorphous Si film 26. A protective film 28 of Si3N4 is formed for protecting the amorphous Si film 26 from the air. The source-drain wiring 2 operates as the signal line 2 and the source-drain wiring 2' operates as the wiring 2' for connecting transparent electrodes such as Indium-Tin-Oxide (ITO) electrodes.
In this embodiment, the gate insulating film 20 is sirnultaneously formed and is the same material as the insulating layer of Figs. 6A and 6B.
Fig. 8 shows a sectional view of a thin film transistor used in a matrix address display apparatus according to a sixth embodiment of the invention. In this embodiment, a protecting film Z9 ls formed for protecting the amorphous Si film 26 (including li~uid crystal) which forms a channel region. The protect film 29 can be made from inorganic material such as Si3N4 or organic material such as polyimide. In this embodiment, the structure made by the signal line 2, the connecting conductive line 19 and the insulating layer 20 (see Fig. 6A), can be formed by using the signal lines 2 and 2' and the protective film 29.
Fig. 9 is a partial plan view of a matrix address display apparatus according to a seventh embodiment of the invention. Fig. lOA is a sectional view taken along the line A-A' of Fig. 9 and Fig. lOB is a sectional view taken along the line B-B' of Fig. 9. In this embodiment, the scanning lines ~.
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1 are formed on a substratP 30 and the signal lines 2 are formed on another substrate 31. The scanning lines 1 and signal llnes 2 are of transparent conductive film such as IT0. The substrates 30 and 31 are put together with predetermined gap 32 therebetween wherein the liquid crystal is introduced.
A sealing member 33 is provided between the substrates 30 and 31.
A carbon-rich resin cornposltion 34 is formed on the scanning electrode 4 for connecting the scanning line 1 to the scanning electrode 4. The insulating layer 20 is formed for insulating the rescue line 15 from the , scanning electrodes 4 and the signal electrodes 5. For the insulating layer 20, SiO2, Si3N4 or polyimide resin may be used. In the insulating layer 20, openings are formed for the conductive parts 12 and 13. When one of the lines 1 or 2 is broken, the conductive parts 12 or 13 are connected to the rescue line 15, thereby restoring the designed function.
Although the invention has been described in its preferred form with a certain degree of particularity, it is understood that the present disclosure of the preferred form can be changed in the details of construction and the combination and arrangement of parts may be modified without departing from the spirit and the scope of the invention as hereinafter claimed.
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Claims (8)
IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A matrix address display apparatus comprising:
a pixel part having a plurality of display elements disposed in a matrix, scanning lines connected to said pixel part, scanning electrodes connected to said scanning lines, signal lines connected to said pixel part, signal electrodes connected to said signal lines, a conductive layer insulated from said scanning lines and said signal lines and disposed as a closed loop around said pixel part, and connecting conductive parts, which are connected to said scanning lines or said signal lines, for selectively connecting said conductive layer disposed near said scanning electrodes and said signal electrodes.
a pixel part having a plurality of display elements disposed in a matrix, scanning lines connected to said pixel part, scanning electrodes connected to said scanning lines, signal lines connected to said pixel part, signal electrodes connected to said signal lines, a conductive layer insulated from said scanning lines and said signal lines and disposed as a closed loop around said pixel part, and connecting conductive parts, which are connected to said scanning lines or said signal lines, for selectively connecting said conductive layer disposed near said scanning electrodes and said signal electrodes.
2. A matrix address display apparatus in accordance with claim 1, wherein:
said conductive layer is provided as a loop around said pixel part and is divided into two parts for electrically separating divided parts from each other.
said conductive layer is provided as a loop around said pixel part and is divided into two parts for electrically separating divided parts from each other.
3. A matrix address display apparatus in accordance with claim 1, wherein:
said conductive layer is formed by a low conductivity material which is the same material used for said scanning lines or said signal lines.
said conductive layer is formed by a low conductivity material which is the same material used for said scanning lines or said signal lines.
4. A matrix address display apparatus in accordance with claim 1 wherein:
said scanning lines and said signal lines are connected by a conductive line formed under an insulating layer and said conductive line and said insulating layer are provided at the periphery of said pixel part, and said conductive layer is formed on said insulating layer.
said scanning lines and said signal lines are connected by a conductive line formed under an insulating layer and said conductive line and said insulating layer are provided at the periphery of said pixel part, and said conductive layer is formed on said insulating layer.
5. A matrix address display apparatus in accordance with claim 4, wherein:
said insulating layer is a gate insulating layer of a thin film transistor for a switching device formed near a cross point of said scanning lines and signal lines.
said insulating layer is a gate insulating layer of a thin film transistor for a switching device formed near a cross point of said scanning lines and signal lines.
6. A matrix address display apparatus in accordance with claim 5, wherein:
said insulating layer is a protective layer of a channel part of the thin film transistor for the switching device formed near a cross point of said scanning lines and said signal lines.
said insulating layer is a protective layer of a channel part of the thin film transistor for the switching device formed near a cross point of said scanning lines and said signal lines.
7. A matrix address display apparatus in accordance with claim 4, wherein:
said conductive lines are simultaneously formed with said scanning lines or said signal lines, and said conductive layer is simultaneously formed with said scanning lines or said signal lines.
said conductive lines are simultaneously formed with said scanning lines or said signal lines, and said conductive layer is simultaneously formed with said scanning lines or said signal lines.
8. A matrix address display apparatus in accordance with claim 1 further comprising:
a substrate on which first conductive parts are formed in both ends of said signal lines or scanning lines, and another substrate on which second conductive parts are formed, said second conductive parts being connected to said signal electrodes or scanning electrodes of another substrate for feeding signals from an outer circuit.
a substrate on which first conductive parts are formed in both ends of said signal lines or scanning lines, and another substrate on which second conductive parts are formed, said second conductive parts being connected to said signal electrodes or scanning electrodes of another substrate for feeding signals from an outer circuit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61145237A JPH0766253B2 (en) | 1986-06-20 | 1986-06-20 | Matrix type image display device |
| JP145237/1986 | 1986-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1274305A true CA1274305A (en) | 1990-09-18 |
Family
ID=15380504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000540164A Expired - Lifetime CA1274305A (en) | 1986-06-20 | 1987-06-19 | Matrix address display apparatus |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4807973A (en) |
| JP (1) | JPH0766253B2 (en) |
| KR (1) | KR900002771B1 (en) |
| CA (1) | CA1274305A (en) |
Families Citing this family (46)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0814668B2 (en) * | 1988-02-16 | 1996-02-14 | シャープ株式会社 | Matrix type liquid crystal display panel |
| JP2526273B2 (en) * | 1988-07-04 | 1996-08-21 | スタンレー電気株式会社 | Liquid crystal display device |
| JP2558847B2 (en) * | 1988-11-01 | 1996-11-27 | 松下電器産業株式会社 | Matrix type image display device capable of repairing disconnection defect and method for repairing disconnection |
| JPH0823643B2 (en) * | 1989-03-28 | 1996-03-06 | シャープ株式会社 | Active matrix display |
| US5268678A (en) * | 1989-06-20 | 1993-12-07 | Sharp Kabushiki Kaisha | Matrix-type display device |
| AU7166291A (en) * | 1989-12-22 | 1991-07-24 | Manufacturing Sciences, Inc. | Programmable masking apparatus |
| EP0438138B1 (en) * | 1990-01-17 | 1995-03-15 | Kabushiki Kaisha Toshiba | Liquid-crystal display device of active matrix type |
| US5076667A (en) * | 1990-01-29 | 1991-12-31 | David Sarnoff Research Center, Inc. | High speed signal and power supply bussing for liquid crystal displays |
| JP2712764B2 (en) * | 1990-06-08 | 1998-02-16 | 三菱電機株式会社 | Matrix type liquid crystal display |
| JPH04233514A (en) * | 1990-12-28 | 1992-08-21 | Sharp Corp | Active matrix substrate |
| US5298891A (en) * | 1991-04-18 | 1994-03-29 | Thomson, S.A. | Data line defect avoidance structure |
| US5303074A (en) * | 1991-04-29 | 1994-04-12 | General Electric Company | Embedded repair lines for thin film electronic display or imager devices |
| US5624804A (en) * | 1991-12-20 | 1997-04-29 | The Rockefeller University | Immunochemical detection of In vivo advanced glycosylation end products |
| US5532853A (en) * | 1993-03-04 | 1996-07-02 | Samsung Electronics Co., Ltd. | Reparable display device matrix for repairing the electrical connection of a bonding pad to its associated signal line |
| US6980275B1 (en) * | 1993-09-20 | 2005-12-27 | Semiconductor Energy Laboratory Co., Ltd. | Electro-optical device |
| US5406301A (en) * | 1993-10-27 | 1995-04-11 | Abbott Laboratories | High reliability display |
| JP3089448B2 (en) * | 1993-11-17 | 2000-09-18 | 松下電器産業株式会社 | Manufacturing method of liquid crystal display panel |
| DE69421522T2 (en) * | 1993-12-20 | 2000-08-10 | Gen Electric | METHOD FOR REPAIRING A LINE OF A THIN FILM IMAGE SENSOR OR DISPLAY AND THE STRUCTURE PRODUCED BY IT |
| US5684547A (en) * | 1994-08-05 | 1997-11-04 | Samsung Electronics Co., Ltd. | Liquid crystal display panel and method for fabricating the same |
| US5841490A (en) * | 1994-10-31 | 1998-11-24 | Kyocera Corporation | Liquid crystal display device and its fabricating method |
| US5473452A (en) * | 1994-12-21 | 1995-12-05 | Goldstar Co., Ltd. | Liquid crystal display device with repair structure |
| JPH08179373A (en) * | 1994-12-26 | 1996-07-12 | Sharp Corp | Image display device nd its defect correction method |
| KR100359794B1 (en) * | 1995-07-11 | 2003-01-24 | 엘지.필립스 엘시디 주식회사 | Repair structure of liquid crystal display and method for fabricating the same |
| WO1997006465A1 (en) * | 1995-08-07 | 1997-02-20 | Hitachi, Ltd. | Active matrix type liquid crystal display device resistant to static electricity |
| US6049369A (en) * | 1995-09-11 | 2000-04-11 | Hitachi, Ltd. | Parallel-field TFT LCD having reference electrodes and a conductive layer |
| TW317629B (en) * | 1995-11-01 | 1997-10-11 | Samsung Electronics Co Ltd | |
| KR0169366B1 (en) * | 1995-12-05 | 1999-03-20 | 김광호 | Substrate for tft-lcd |
| US5608245A (en) * | 1995-12-21 | 1997-03-04 | Xerox Corporation | Array on substrate with repair line crossing lines in the array |
| US6697037B1 (en) | 1996-04-29 | 2004-02-24 | International Business Machines Corporation | TFT LCD active data line repair |
| GB2313226A (en) * | 1996-05-17 | 1997-11-19 | Sharp Kk | Addressable matrix arrays |
| KR100244181B1 (en) * | 1996-07-11 | 2000-02-01 | 구본준 | Repair structure of liquid crystal display device and repairing method for using it |
| KR100244449B1 (en) * | 1997-02-11 | 2000-02-01 | 구본준 | Liquid crystal display having shorting bar for testing thin-film transistor and manufacturing method thereof |
| KR100260611B1 (en) * | 1997-04-03 | 2000-07-01 | 윤종용 | Lcd panel for reparing lines |
| KR100242943B1 (en) * | 1997-05-30 | 2000-02-01 | 윤종용 | Lcd apparatus with repairing line |
| KR100295309B1 (en) * | 1997-09-30 | 2001-09-17 | 구본준, 론 위라하디락사 | Thin film transistor substrate |
| JP4653867B2 (en) * | 1999-06-30 | 2011-03-16 | エーユー オプトロニクス コーポレイション | Defect repair method for electronic components |
| CN1195243C (en) * | 1999-09-30 | 2005-03-30 | 三星电子株式会社 | Film transistor array panel for liquid crystal display and its producing method |
| JP2003202846A (en) * | 2001-10-30 | 2003-07-18 | Sharp Corp | Display device and driving method therefor |
| JP2003216062A (en) * | 2002-01-18 | 2003-07-30 | Sharp Corp | Display device |
| JP4255683B2 (en) * | 2002-03-25 | 2009-04-15 | シャープ株式会社 | Glass wiring board connection structure and display device |
| JP4010846B2 (en) * | 2002-03-29 | 2007-11-21 | 富士通日立プラズマディスプレイ株式会社 | Front display film for flat display panel and flat display device using the same, front film for plasma display panel and plasma display device using the same |
| KR100770472B1 (en) * | 2003-03-27 | 2007-10-26 | 비오이 하이디스 테크놀로지 주식회사 | Method for manufacturing array substrate for liquid crystal display |
| TWI308316B (en) * | 2005-09-09 | 2009-04-01 | Au Optronics Corp | Circuit line and manufacturing method thereof |
| KR102005483B1 (en) * | 2012-10-19 | 2019-07-31 | 삼성디스플레이 주식회사 | Thin film transistor array panel and method for repairing the same |
| KR20140095820A (en) * | 2013-01-25 | 2014-08-04 | 삼성디스플레이 주식회사 | Thin film transistor substrate, method of manufacturing the same and display device including the same |
| US9618810B2 (en) * | 2015-02-11 | 2017-04-11 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Array substrate and liquid crystal display panel |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4368523A (en) * | 1979-12-20 | 1983-01-11 | Tokyo Shibaura Denki Kabushiki Kaisha | Liquid crystal display device having redundant pairs of address buses |
| FR2482344A1 (en) * | 1980-05-08 | 1981-11-13 | Tech Radioelect Electro Fs | TWO-DIMENSIONAL DISPLAY WITH ELECTRICALLY CONTROLLED FLUID LAYER AND METHOD OF MANUFACTURING THE SAME |
| JPS58178325A (en) * | 1982-04-14 | 1983-10-19 | Hitachi Ltd | Liquid crystal display element |
| JPS599634A (en) * | 1982-07-07 | 1984-01-19 | Seiko Epson Corp | Liquid crystal display device |
| US4549200A (en) * | 1982-07-08 | 1985-10-22 | International Business Machines Corporation | Repairable multi-level overlay system for semiconductor device |
| JPS5910988A (en) * | 1982-07-12 | 1984-01-20 | ホシデン株式会社 | Color liquid crystal display |
| JPS5991479A (en) * | 1982-11-17 | 1984-05-26 | セイコーエプソン株式会社 | Active matrix substrate |
| JPS60160173A (en) * | 1984-01-30 | 1985-08-21 | Sharp Corp | Thin film transistor |
| JPH0627980B2 (en) * | 1984-10-17 | 1994-04-13 | レタ・フランセ・ルプレザント・パ・ル・ミニストル・デ・ペ・テ・テ・（セントル・ナシヨナル・デチユ−ド・デ・テレコミユニカシオン） | Manufacturing method of active matrix displace screen |
| US4688896A (en) * | 1985-03-04 | 1987-08-25 | General Electric Company | Information conversion device with auxiliary address lines for enhancing manufacturing yield |
| US4630355A (en) * | 1985-03-08 | 1986-12-23 | Energy Conversion Devices, Inc. | Electric circuits having repairable circuit lines and method of making the same |
| JPS61236593A (en) * | 1985-04-12 | 1986-10-21 | 松下電器産業株式会社 | Display apparatus and method |
-
1986
- 1986-06-20 JP JP61145237A patent/JPH0766253B2/en not_active Expired - Lifetime
-
1987
- 1987-06-19 CA CA000540164A patent/CA1274305A/en not_active Expired - Lifetime
- 1987-06-19 US US07/063,627 patent/US4807973A/en not_active Expired - Lifetime
- 1987-06-20 KR KR1019870006277A patent/KR900002771B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR880000909A (en) | 1988-03-30 |
| US4807973A (en) | 1989-02-28 |
| JPS62299993A (en) | 1987-12-26 |
| JPH0766253B2 (en) | 1995-07-19 |
| KR900002771B1 (en) | 1990-04-30 |
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