CN100395621C - LCD device - Google Patents
LCD device Download PDFInfo
- Publication number
- CN100395621C CN100395621C CNB2004100919506A CN200410091950A CN100395621C CN 100395621 C CN100395621 C CN 100395621C CN B2004100919506 A CNB2004100919506 A CN B2004100919506A CN 200410091950 A CN200410091950 A CN 200410091950A CN 100395621 C CN100395621 C CN 100395621C
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- CN
- China
- Prior art keywords
- liquid crystal
- film
- crystal indicator
- polaroid
- module backlight
- 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.)
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Abstract
The present invention relates to a liquid crystal display device which has a penetration operating state and a reflection operating state and comprises a liquid crystal display panel, a converting device and a backlight module, wherein the liquid crystal display panel comprises a first polaroid and a liquid crystal layer. The converting device comprises a drive device, and a penetration film and a reflective film positioned on the drive device. When the liquid crystal display device is in the penetration operating state, the drive device starts to make the penetration film positioned between the backlight module and the liquid crystal display panel. When the liquid crystal display device is in the reflection operating state, the drive device starts to make the reflective film adjacent to the liquid crystal display panel in order to be used for reflecting ambient light.
Description
[technical field]
The present invention relates to a kind of liquid crystal indicator.
[background technology]
Liquid crystal indicator can be divided into penetration liquid crystal display device and reflective LCD device according to the difference of its light source that utilizes.Penetration liquid crystal display device is provided with a module backlight usually so that illumination to be provided at the liquid crystal panel back side, because module backlight power consumption is bigger, so cause the penetration liquid crystal display device power consumption bigger.Reflective LCD device then utilizes surround lighting that illumination is provided, so its power consumption is less, but its display quality meeting variation when surround lighting is more weak, so its usable range is limited.
Please refer to Fig. 1, is the synoptic diagram of a kind of penetration liquid crystal display device in the prior art.This penetration liquid crystal display device 1 comprises a upper substrate 110, one infrabasal plates 130 and the liquid crystal layer between two substrates 120.Polaroid 100 and polaroid 140 once lay respectively at the both sides up and down of upper substrate 110 and infrabasal plate 130 on one, and a module backlight 150 that is made of light source 152 and light guide plate 151 is positioned at down polaroid 140 belows so that illumination to be provided.
The principle of work of this penetration liquid crystal display device 1 is: the light warp that module 150 backlight sends polaroid 140 down becomes linearly polarized light; When liquid crystal layer 120 was in different orientations under drive controlling, it became different polarization states after providing suitable this linearly polarized light of light path official post by liquid crystal layer 120; Light is incident to polaroid 100 then, the polarization state at corresponding its place, and a part of light appears penetrates polaroid 100 and the formation demonstration.
Because use module 150 backlight, the range of application of penetration liquid crystal display device 1 is wider, but owing to module 150 backlight must be opened under user mode, so its power consumption is higher.
Please refer to Fig. 2, is the synoptic diagram of a kind of reflective LCD device in the prior art.This reflective LCD device 2 comprises a upper substrate 210, one infrabasal plates 230 and the liquid crystal layer between two substrates 220.Polaroid 200 is positioned at upper substrate 210 tops on one, and a quarter-wave plate 260 is positioned at and is arranged on infrabasal plate 230 belows, and a reflecting plate 270 is positioned at the below of quarter-wave plate 260.
The principle of work of this penetration liquid crystal display device 2 is: surround lighting becomes linearly polarized light after being incident to polaroid 200; When liquid crystal layer 220 was in different orientations under drive controlling, it provided suitable this linearly polarized light of light path official post to become different polarization states after by liquid crystal layer; Light is incident to quarter-wave plate 260 then, and sheet 270 reflection and once more by quarter-wave plate 260 of being reflected; Subsequently once more by liquid crystal layer 220 and become different polarization states; Light is incident to polaroid 200 then, the polarization state at corresponding its place, and the light of a special ratios appears penetrates polaroid 200 and the formation demonstration.Wherein the effect of quarter-wave plate 260 provides suitable optical path difference.
Owing to do not need to use module backlight, the power consumption of reflective LCD device 2 is less, but it is difficult to application in than dark situation, so its range of application is narrower.
Therefore prior art liquid crystal indicator or adopt the penetration structure and consume energy greatlyyer or adopts reflective devices and range of application is narrower.
[summary of the invention]
In order to overcome in the prior art liquid crystal indicator or to adopt the penetration structure and consume energy greatlyyer, or adopt reflective devices and the narrower defective of range of application the invention provides a kind of liquid crystal indicator that has penetrating and reflect two kinds of duties.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of liquid crystal indicator is provided, and it has penetrating and reflects two kinds of duties, and it comprises a liquid crystal panel, a conversion equipment and a module backlight.This liquid crystal panel comprises one first polaroid and liquid crystal layer, and this liquid crystal layer has relative both sides, and this module backlight is positioned at a side of this liquid crystal layer, and this first polaroid is positioned at the opposite side of this liquid crystal layer.This conversion equipment comprises a drive unit, is positioned at one on this drive unit and penetrates a film and a reflective film.When this liquid crystal indicator is in when penetrating duty, this drive unit starts to be made this penetrate film to be positioned at the side of this module backlight near this liquid crystal panel, and what this reflective film was positioned at this module backlight penetrates the relative side of film with this; When this liquid crystal indicator was in the reflective operation state, this drive unit starts made contiguous this liquid crystal panel of this reflective film with reflect ambient light, and this penetrates the side relative with this reflective film that film is positioned at this module backlight.
Compared to prior art, the advantage of liquid crystal indicator of the present invention is that it has penetrating and reflects two kinds of duties, and it can be used in dark environment, and has wider range of application; And when surround lighting was bright, it can close module backlight and power consumption is less.
[description of drawings]
Fig. 1 is a prior art penetration liquid crystal display device synoptic diagram.
Fig. 2 is a prior art reflective LCD device synoptic diagram.
Fig. 3 and Fig. 4 are respectively that liquid crystal indicator of the present invention is in the synoptic diagram that penetrates duty and reflective operation state respectively.
[embodiment]
Please refer to Fig. 3, is the working state schematic representation that penetrates of liquid crystal indicator of the present invention.This liquid crystal indicator 3 comprises a liquid crystal panel 30, one conversion equipments (not indicating), a module 350 backlight and a detector 380.This liquid crystal panel 30 comprises a upper substrate 310, one infrabasal plates 330, at liquid crystal layer between the two substrates 320 and one first polaroid 300 that is arranged on the upper substrate 310.This conversion equipment comprises a drive unit 390 that is made of drive motor 391 and driving-belt 392, one as second polaroid 340 that penetrates film, one reflective film that constitutes by quarter-wave plate 360 and reflector plate 370 (indicating), this penetrates film 340 and is arranged on the driving-belt 392 with this reflective film, and two drive motor 391 can drive driving-belt 392 and move.This module 350 backlight comprises a light source 352 and a light guide plate 351.This module 350 backlight is set at the space that driving-belt 392 forms, and it can be along from the direction emergent ray of infrabasal plate 330 to upper substrate 310.
When detector 380 detects surround lighting when more weak, it starts module 350 backlight so that illumination to be provided, and primer fluid crystal device 3 is for penetrating duty.At this moment, drive motor 391 rotates and drives driving-belt 392 and moves and make and penetrate film 340 between light guide plate 351 and infrabasal plate 330.The light that light source 352 sends outgoing after light guide plate 351, successively through penetrating i.e. second polaroid 340 of film, infrabasal plate 330, liquid crystal layer 320, the upper substrate 310 and first polaroid 300 are with the working method realization demonstration of known penetration liquid crystal display device.
Please refer to Fig. 4, is the reflective operation view of liquid crystal indicator of the present invention.When detector 380 detects surround lighting when strong, it closes module 350 backlight reducing power consumption, and primer fluid crystal device 3 is the reflective operation state.At this moment, drive motor 391 rotations and drive driving-belt 392 move and make reflective film be positioned at the below of infrabasal plate 340.Surround lighting is successively through first polaroid 300, upper substrate 310, liquid crystal layer 320, infrabasal plate 330 and quarter-wave plate 360 backs arrive reflector plate 370, be reflected sheet 370 reflection and once more by outgoing after the said modules realizes showing with the working method of known reflective LCD device.
Because liquid crystal indicator of the present invention has penetrating and reflect two kinds of duties, it can adopt in dark environment and penetrate duty and finish demonstration, thereby has wider range of application; And when surround lighting was bright, it can adopt the reflective operation state to finish demonstration, and can close module backlight this moment, thereby power consumption is less.Therefore its mode with the conversion work state both advantages that gets both are reached than low power consumption and wider range of application.
The drive motor of liquid crystal indicator of the present invention can adopt step motor.Reflective film with penetrate film and can directly be connected and constitute travelling belt with drive motor.
Claims (6)
1. liquid crystal indicator, it has penetrating and reflects two kinds of duties, and it comprises: a liquid crystal panel, this liquid crystal panel comprise one first polaroid and liquid crystal layer, and this liquid crystal layer has relative both sides; One conversion equipment, this conversion equipment comprises a drive unit, is positioned at one on this drive unit and penetrates a film and a reflective film; And a module backlight, this module backlight is positioned at a side of this liquid crystal layer, and this first polaroid is positioned at the opposite side of this liquid crystal layer; When this liquid crystal indicator when penetrating duty, this drive unit starts to be made this penetrate film to be positioned at the side of this module backlight near this liquid crystal panel, this reflective film is positioned at the side of this module backlight away from this liquid crystal panel; When this liquid crystal indicator during at the reflective operation state, this drive unit starts makes contiguous this liquid crystal panel of this reflective film with reflect ambient light, and this penetrates film and is positioned at the side of this module backlight away from this liquid crystal panel.
2. liquid crystal indicator as claimed in claim 1 is characterized in that: this penetrates film and comprises a polaroid.
3. liquid crystal indicator as claimed in claim 1 is characterized in that: this reflective film comprises a quarter-wave plate and a reflector plate.
4. liquid crystal indicator as claimed in claim 1 is characterized in that: this drive unit comprises that a drive motor and is used to be provided with the travelling belt that penetrates film and reflective film.
5. liquid crystal indicator as claimed in claim 1 is characterized in that: it comprises that also one is used for determining that the power of ambient light is to determine the detector of this liquid crystal indicator duty.
6. liquid crystal indicator as claimed in claim 1 is characterized in that: this module backlight comprises a light source and a light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100919506A CN100395621C (en) | 2004-12-30 | 2004-12-30 | LCD device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100919506A CN100395621C (en) | 2004-12-30 | 2004-12-30 | LCD device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1797104A CN1797104A (en) | 2006-07-05 |
| CN100395621C true CN100395621C (en) | 2008-06-18 |
Family
ID=36818275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100919506A Expired - Fee Related CN100395621C (en) | 2004-12-30 | 2004-12-30 | LCD device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100395621C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102207629B1 (en) | 2014-07-25 | 2021-01-26 | 삼성전자주식회사 | Display apparatus and Methof for controlling display apparatus thereof |
| CN104896382B (en) * | 2015-06-18 | 2017-07-21 | 深圳市华星光电技术有限公司 | Backlight module and the liquid crystal display device comprising it |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5686979A (en) * | 1995-06-26 | 1997-11-11 | Minnesota Mining And Manufacturing Company | Optical panel capable of switching between reflective and transmissive states |
| CN1389754A (en) * | 2001-06-06 | 2003-01-08 | 精工爱普生株式会社 | Liquid crystal displaying device and electronic device |
| CN2777593Y (en) * | 2005-02-04 | 2006-05-03 | 鸿富锦精密工业（深圳）有限公司 | Liquid crystal display device |
-
2004
- 2004-12-30 CN CNB2004100919506A patent/CN100395621C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5686979A (en) * | 1995-06-26 | 1997-11-11 | Minnesota Mining And Manufacturing Company | Optical panel capable of switching between reflective and transmissive states |
| CN1389754A (en) * | 2001-06-06 | 2003-01-08 | 精工爱普生株式会社 | Liquid crystal displaying device and electronic device |
| CN2777593Y (en) * | 2005-02-04 | 2006-05-03 | 鸿富锦精密工业（深圳）有限公司 | Liquid crystal display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1797104A (en) | 2006-07-05 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080618 Termination date: 20171230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |