WO2003107086A1 - Improved electro-optically active device - Google Patents
Improved electro-optically active device Download PDFInfo
- Publication number
- WO2003107086A1 WO2003107086A1 PCT/IB2003/002321 IB0302321W WO03107086A1 WO 2003107086 A1 WO2003107086 A1 WO 2003107086A1 IB 0302321 W IB0302321 W IB 0302321W WO 03107086 A1 WO03107086 A1 WO 03107086A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- display device
- display
- electro
- cell
- optically active
- Prior art date
Links
Classifications
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
-
- 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
- G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
- G02F1/166—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
- G02F1/167—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
-
- 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
- G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
- G02F1/1677—Structural association of cells with optical devices, e.g. reflectors or illuminating devices
Definitions
- the present invention relates to an improved electro-optically active display.
- An electrophoretic display being one example of an electro-optically active display where there is physical transport of the electro-optically active medium through the device, essentially comprises a suspension of coloured particles in a liquid having another colour than the above particles.
- the display may be driven in two states, a distributed state, in which the particles are distributed in a display cell in such a way that they essentially cover the cell area, and a collected state, in which the particles are collected in a chosen area of the cell, in order to affect the transmission of the cell in a small extent, if any.
- some electrophoretic displays comprises a reservoir part incorporated in the cell.
- the reservoir part comprises an obstructing light shield element, behind which the particles may be collected in said collected state, in such a way that the particles are not visible for a viewer.
- This solution has the drawback that said obstructing light shield element takes up a part of the cell area, and thereby limits the transmission of the cell, but on the other hand, the remaining active transmission area of the cell may be totally emptied on particles in the collected state, thereby offering good transmission characteristics in this state.
- an electrophoretic display further comprises of a regular lateral array of electrophoretic cells, said array being driven by means of active matrix driving.
- active matrix driving requires a large number of components, which must be placed in each of the pixel cells, making up the display. Examples of such components are spacers, gate and data lines, storage capacitors and TFTs. Since such components are placed in the cell, these will occupy a part of the active viewing and transmission area of the cell, thereby limiting the transmission of the cell. This is especially the case in electrophoretic transmissive or transflective displays, in which the electrophoretic layer is switched by lateral fields.
- the object of the present invention is to overcome at least some of the drawbacks with the prior art electrophoretic displays, and provide a display with improved transmission characteristics.
- an electrophoretic display device comprising at least one individually addressable pixel, each pixel being provided with an obstructing element, being characterised in that a portion of at least one component, being one of an electrical or a mechanical component, is positioned beneath the obstructing element in such a way that the portion is not visible for a viewer of the display device.
- an obstructing element being characterised in that a portion of at least one component, being one of an electrical or a mechanical component, is positioned beneath the obstructing element in such a way that the portion is not visible for a viewer of the display device.
- the obstructing element are reservoir light shield, black matrix and mirror element.
- said at least one component is one of a spacer, a barrier a gate electrode, a data electrode, a storage capacitor or a thin film transistor, which are all components commonly present in current electrophoretic displays.
- many other components such as sensors for temperature etc. may in accordance with the invention also be positioned in the same way to achieve the same advantageous effects.
- said display is a reservoir electrophoretic display device, comprising a reservoir light shield, beneath which one or more of an electrode, a storage capacitor and a thin film transistor is positioned.
- the light shield is necessarily present in the cell, and by positioning other components beneath said light shield, the active transmission area of the cell may be maximised.
- said pixel may further comprise a reflective element for enabling transflective operation, whereby a portion of an additional component, such as a source electrode is positioned beneath the reflective element, in such a way that it is not visible for a viewer of the display device. By covering source lines with the reflector, the area available for transmission is maximised, in the case of transflective operation.
- Fig 2 is schematic cross-section of a reservoir electrophoretic display device in accordance with the invention.
- This invention relates to an electrophoretic display device 1, for example as shown in fig 2, comprising a plurality of cells, each cell 2 comprising a suspension of charged coloured particles in a light-transmissive fluid.
- Each cell 2 essentially comprises a transmissive front substrate 2, a gate electrode 5, a source electrode 4 and a back substrate, being arranged to be reflective, transmissive or transflective (fig 2 shows a transflective device as an example).
- the arrangement of these components will be defined below.
- the cell further comprises a light shield element 3 in order to provide a reservoir part of the cell. The remaining part of the cell, not being covered by the light shield element 3, constitutes an active cell part.
- the display may be driven in two states, a collected state and a distributed state.
- the electrodes 4, 5 are so driven that the particles of the suspension are distributed throughout the active cell part, so that light being transmitted through the cell in either direction are disturbed by the presence of said particles.
- the electrodes 4, 5 are so driven that the charged particles essentially are collected in the reservoir part of the cell, and thereby do not disturb the transmission of light through the active cell part.
- the pigmentation and colouring of the pigments and the light-transmissive fluid may be adjusted in accordance with prior art.
- Fig 1 is a plan view of one possible embodiment of the invention.
- Fig 1 discloses a part of an electrophoretic display active matrix array 1, comprising four cells. Each of said cells 2 is associated with a light shield 3 in order to provide a reservoir part of the cell.
- the display further comprises a source line 4 as well as a gate line 5.
- the gate line 5 is positioned beneath the light shield 3, so that it is not visible for a viewer of the display. In this way, the gate line 5 do not occupy any extra space of the active cell part, and hence do not affect the transmission characteristics of the display.
- the source line 4 is in a known manner positioned essentially perpendicular to the gate line 5.
- the display cell comprises a TFT 8 (thin film transistor) and a storage capacitor 6, the combination of which is used to apply selected voltages to each individual pixel, by means of an addressing scheme as is commonly used in liquid crystal displays (LCDs) in accordance with prior art.
- Both the TFT and the storage capacitor are positioned beneath the light shield 3, so that they are not visible for a viewer of the display and hence do not occupy any extra space of the active cell part.
- the above configuration is especially suitable in transflective and transmissive electrophoretic displays using a lateral field in combination with the above reservoir function. Since the reservoir is an inactive area of the cell and shields everything in the affected area from view, essentially all electrical and mechanical components required for the display should preferably be placed behind said light shield defining the reservoir, thereby maximizing the transmission. Such components may for example include gate and source electrodes, TFTs, storage capacitors, spacers, barriers and sensors.
- components of the above mentioned kind may be positioned behind other elements, such as under a black matrix or a mirror element, already present in the display structure.
- the invention may not only be used in electrophoretic displays, but is equally applicable to other electro-optically active displays, which work on the principle that there is a physical transport of electro- optically active medium between a visible pixel area and a more or less hidden area.
- electro-wetting displays which utilises movement of coloured oil layers
- electro-mechanical displays which utilises the movement of for example foils.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003233092A AU2003233092A1 (en) | 2002-06-13 | 2003-05-27 | Improved electro-optically active device |
US10/517,458 US7463407B2 (en) | 2002-06-13 | 2003-05-27 | Electro-optically active device |
EP03727843.9A EP1516223B1 (en) | 2002-06-13 | 2003-05-27 | Improved electro-optically active device |
JP2004513840A JP2005529375A (en) | 2002-06-13 | 2003-05-27 | Improved electro-optically active device |
US11/935,754 US7609436B2 (en) | 2002-06-13 | 2007-11-06 | Electro-optically active device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02077333.9 | 2002-06-13 | ||
EP02077333 | 2002-06-13 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/935,754 Continuation US7609436B2 (en) | 2002-06-13 | 2007-11-06 | Electro-optically active device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003107086A1 true WO2003107086A1 (en) | 2003-12-24 |
Family
ID=29724491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2003/002321 WO2003107086A1 (en) | 2002-06-13 | 2003-05-27 | Improved electro-optically active device |
Country Status (7)
Country | Link |
---|---|
US (2) | US7463407B2 (en) |
EP (1) | EP1516223B1 (en) |
JP (1) | JP2005529375A (en) |
CN (1) | CN100361018C (en) |
AU (1) | AU2003233092A1 (en) |
TW (1) | TW200401937A (en) |
WO (1) | WO2003107086A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004095122A1 (en) * | 2003-04-21 | 2004-11-04 | Canon Kabushiki Kaisha | Display apparatus |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007105146A1 (en) * | 2006-03-14 | 2007-09-20 | Koninklijke Philips Electronics N.V. | Driving an in-plane passive matrix display |
CN110382299B (en) * | 2017-03-30 | 2023-02-03 | 金泰克斯公司 | Switchable imager lens cover |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6337761B1 (en) * | 1999-10-01 | 2002-01-08 | Lucent Technologies Inc. | Electrophoretic display and method of making the same |
WO2003019279A1 (en) * | 2001-08-23 | 2003-03-06 | Koninklijke Philips Electronics N.V. | Electrophoretic display device |
EP1306716A2 (en) * | 2001-10-04 | 2003-05-02 | Seiko Epson Corporation | Electro-optical device and electronic apparatus |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4068927A (en) | 1976-09-01 | 1978-01-17 | North American Philips Corporation | Electrophoresis display with buried lead lines |
JPS5717281A (en) * | 1980-07-04 | 1982-01-28 | Matsushita Electric Ind Co Ltd | Display panel for liquid crystal television |
JPH01137240A (en) | 1987-11-25 | 1989-05-30 | Kinseki Ltd | Electrophoretic display device |
JP2812851B2 (en) * | 1993-03-24 | 1998-10-22 | シャープ株式会社 | Reflective liquid crystal display |
US5745094A (en) * | 1994-12-28 | 1998-04-28 | International Business Machines Corporation | Electrophoretic display |
JP3205767B2 (en) * | 1995-09-13 | 2001-09-04 | キヤノン株式会社 | Transmissive liquid crystal display |
JP3421494B2 (en) * | 1996-01-30 | 2003-06-30 | 株式会社東芝 | Electrophoretic display |
DE69925588T2 (en) | 1998-04-10 | 2005-10-27 | E-Ink Corp., Cambridge | MULTILAYER REFLECTIVE DISPLAY DEVICE WITH POLYCHROMATIC SUBPIXLES |
US6144361A (en) * | 1998-09-16 | 2000-11-07 | International Business Machines Corporation | Transmissive electrophoretic display with vertical electrodes |
US6987502B1 (en) * | 1999-01-08 | 2006-01-17 | Canon Kabushiki Kaisha | Electrophoretic display device |
JP2003057636A (en) * | 1999-01-29 | 2003-02-26 | Citizen Watch Co Ltd | Reflective liquid crystal display device and method for manufacturing the same |
JP2000298292A (en) * | 1999-04-13 | 2000-10-24 | Sony Corp | Display device |
AU780824B2 (en) * | 1999-08-21 | 2005-04-21 | Agency For Science, Technology And Research | DNA marker profile data analysis |
US6639580B1 (en) * | 1999-11-08 | 2003-10-28 | Canon Kabushiki Kaisha | Electrophoretic display device and method for addressing display device |
JP3667242B2 (en) * | 2000-04-13 | 2005-07-06 | キヤノン株式会社 | Electrophoretic display method and electrophoretic display device |
JP4006925B2 (en) * | 2000-05-30 | 2007-11-14 | セイコーエプソン株式会社 | Method for manufacturing electrophoretic display device |
JP2003186065A (en) * | 2001-12-21 | 2003-07-03 | Canon Inc | Electrophoretic display device and its driving method |
ATE402428T1 (en) * | 2002-02-19 | 2008-08-15 | Koninkl Philips Electronics Nv | ELECTROPHORETIC DISPLAY DEVICE |
US6900924B2 (en) * | 2003-01-16 | 2005-05-31 | Canon Kabushiki Kaisha | Driving method of electrophoretic display |
-
2003
- 2003-05-27 WO PCT/IB2003/002321 patent/WO2003107086A1/en active Application Filing
- 2003-05-27 AU AU2003233092A patent/AU2003233092A1/en not_active Abandoned
- 2003-05-27 JP JP2004513840A patent/JP2005529375A/en active Pending
- 2003-05-27 CN CNB038134144A patent/CN100361018C/en not_active Expired - Fee Related
- 2003-05-27 US US10/517,458 patent/US7463407B2/en not_active Expired - Lifetime
- 2003-05-27 EP EP03727843.9A patent/EP1516223B1/en not_active Expired - Lifetime
- 2003-06-10 TW TW092115676A patent/TW200401937A/en unknown
-
2007
- 2007-11-06 US US11/935,754 patent/US7609436B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6337761B1 (en) * | 1999-10-01 | 2002-01-08 | Lucent Technologies Inc. | Electrophoretic display and method of making the same |
WO2003019279A1 (en) * | 2001-08-23 | 2003-03-06 | Koninklijke Philips Electronics N.V. | Electrophoretic display device |
EP1306716A2 (en) * | 2001-10-04 | 2003-05-02 | Seiko Epson Corporation | Electro-optical device and electronic apparatus |
Non-Patent Citations (1)
Title |
---|
TOKO Y ET AL: "DISPLAY PERFORMANCES OF MOBILE FINE PARTICLE DISPLAY WITH LIQUID CRYSTAL", 2002 SID INTERNATIONAL SYMPOSIUM DIGEST OF TECHNICAL PAPERS. BOSTON, MA, MAY 21 - 23, 2002, SID INTERNATIONAL SYMPOSIUM DIGEST OF TECHNICAL PAPERS, SAN JOSE, CA: SID, US, vol. 33 / 1, 21 May 2002 (2002-05-21), pages 526 - 529, XP001134288 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004095122A1 (en) * | 2003-04-21 | 2004-11-04 | Canon Kabushiki Kaisha | Display apparatus |
US7733323B2 (en) | 2003-04-21 | 2010-06-08 | Canon Kabushiki Kaisha | Display apparatus |
Also Published As
Publication number | Publication date |
---|---|
US20080088913A1 (en) | 2008-04-17 |
US7463407B2 (en) | 2008-12-09 |
JP2005529375A (en) | 2005-09-29 |
TW200401937A (en) | 2004-02-01 |
US7609436B2 (en) | 2009-10-27 |
CN100361018C (en) | 2008-01-09 |
US20060050378A1 (en) | 2006-03-09 |
AU2003233092A1 (en) | 2003-12-31 |
EP1516223A1 (en) | 2005-03-23 |
EP1516223B1 (en) | 2015-02-11 |
CN1659472A (en) | 2005-08-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101329271B1 (en) | Combined single/multiple view-display | |
JP4816245B2 (en) | Electrophoretic display device | |
KR100870613B1 (en) | Electrode structure of electrochromic device | |
US8681090B2 (en) | Electrophoretic display panel | |
CN112639602B (en) | Backboard with hexagonal and triangular electrodes | |
US20060139308A1 (en) | Addressing schemes for electronic displays | |
US20060290651A1 (en) | Electrooptic/micromechanical display with discretely controllable bistable transflector | |
KR20160119195A (en) | Electro-optic display backplane structures | |
US20050266590A1 (en) | Electrophoretic display device | |
US7609436B2 (en) | Electro-optically active device | |
US20060256421A1 (en) | Electrophoretic display device | |
KR20080057264A (en) | In-plane switching display devices | |
KR20070109603A (en) | Electrophoretic display device and manufacturing method thereof | |
CN113574450A (en) | Electro-optic display and method of driving an electro-optic display | |
US20220398956A1 (en) | Methods and apparatuses for driving electro-optic displays | |
US11450287B2 (en) | Electro-optic displays | |
KR20050016544A (en) | Improved electro-optically active device | |
JP2009265270A (en) | Electro-optical display | |
JP2009265272A (en) | Electro-optical display | |
KR20060079595A (en) | Color filter substrate used in display device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PH PL PT RO RU SC SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2003727843 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2004513840 Country of ref document: JP |
|
ENP | Entry into the national phase |
Ref document number: 2006050378 Country of ref document: US Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10517458 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 20038134144 Country of ref document: CN Ref document number: 1020047020174 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 1020047020174 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 2003727843 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 10517458 Country of ref document: US |