CN100483226C - Semi- transmissive liquid crystal display device - Google Patents
Semi- transmissive liquid crystal display device Download PDFInfo
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- CN100483226C CN100483226C CNB2004100274385A CN200410027438A CN100483226C CN 100483226 C CN100483226 C CN 100483226C CN B2004100274385 A CNB2004100274385 A CN B2004100274385A CN 200410027438 A CN200410027438 A CN 200410027438A CN 100483226 C CN100483226 C CN 100483226C
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- liquid crystal
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- crystal indicator
- half penetrated
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Abstract
This invention discloses a semi-penetration LCD device including an upper base plate, a lower base plat opposite to it, a LC layer, a public electrode and multiple pixel electrodes, among which, said LC layer is between the two base plates, said public electrode is a plane one with a reflection zone and a penetration zone between the lower base plate and the LC layer, said pixel electrodes are set between the public electrode and the LC layer and form an edge electric field with the public electrode, said pixel electrodes include at least two parts bending to different directions or part of them are in arc structure.
Description
[technical field]
The invention relates to a kind of liquid crystal indicator, particularly a kind of half penetrated liquid crystal indicator.
[background technology]
Liquid crystal indicator utilizes mode mainly to be divided into three kinds of reflective LCD device, penetration liquid crystal display device and half penetrated liquid crystal indicators according to incident light.Half penetrated liquid crystal indicator is a deficiency of utilizing backlight auxiliary environment light source, when environment light source is sufficient, can utilize surround lighting to work in the reflection mode; When environment light source is not enough, can open backlight with transmission mode work.Half penetrated liquid crystal indicator has the advantage of power saving concurrently and has auxiliary light to remedy the deficiency of surround lighting.Half penetrated liquid crystal indicator has been widely used in videophone, the portable digital-assistant (Personal DigitalAssistant, PDA) and various computer installations in.
Seeing also Fig. 1, is a kind of liquid crystal indicator that the United States Patent (USP) of on January 13rd, 2004 bulletin is disclosed for the 6th, 678, No. 027.This liquid crystal indicator is to adopt fringe field to switch (Fring Field Switching, FFS) technology.This liquid crystal indicator comprises: an infrabasal plate 10 and a upper substrate 20; Liquid crystal layer 30 between infrabasal plate 10 and upper substrate 20; Be positioned at the polaroid 18 of infrabasal plate 10 outside surfaces; Be positioned at the public electrode 11 of infrabasal plate 10 inside surfaces; Be positioned at the pixel electrode 12 on the public electrode 11, and 12 of public electrode 11 and pixel electrodes separate with insulation course 13, when then adding voltage, form an edge electric field between pixel electrode 12 and the public electrode 11; 30 of infrabasal plate 10 and liquid crystal layers form a both alignment layers 19; 30 of upper substrate 20 and liquid crystal layers form a colored filter 17 and a both alignment layers 14; The outside surface of upper substrate 20 forms a polaroid 15.Because this liquid crystal indicator adopts the fringe field handoff technique, 12 of its public electrode 11 and pixel electrodes form a parallel electric field during energising, make liquid crystal molecule 16 rotate in the plane parallel with substrate.This liquid crystal indicator can be applicable to half penetrated pattern.
See also Fig. 2, be these liquid crystal indicator pixel electrode 12 structural representations.(Thin Film Transistor, TFT) electric switch provide electric signal to pixel electrode 12 by data line 22 to gate line 21 control TFT 23.Because this pixel electrode 12 adopts the strip shaped electric poles structure, when therefore applying voltage, the fringe field direction of pixel electrode 12 and 11 generations of public electrode is unique, and then the direction of liquid crystal molecule 16 deflections and angle also are unique, thereby just defining visible angle, its viewing angle characteristic is not good.
[summary of the invention]
For overcoming the not good problem of the half penetrated liquid crystal indicator viewing angle characteristic of prior art, the invention provides the preferable half penetrated liquid crystal indicator of a kind of viewing angle characteristic.
Half penetrated liquid crystal indicator of the present invention comprises a upper substrate, the infrabasal plate that is oppositely arranged with it, a liquid crystal layer, a public electrode and a plurality of pixel electrode, this liquid crystal layer is between upper substrate and infrabasal plate, this public electrode is that a plane electrode and its have reflector space and penetration region, be arranged between infrabasal plate and the liquid crystal layer, this pixel electrode is arranged between public electrode and the liquid crystal layer, form an edge electric field between this pixel electrode and public electrode, and this pixel electrode adopts S shape warp architecture.
The another kind of half penetrated liquid crystal indicator of the present invention comprises a upper substrate, the infrabasal plate that is oppositely arranged with it, one liquid crystal layer, one public electrode and a plurality of pixel electrode, this liquid crystal layer is between upper substrate and infrabasal plate, this public electrode is that a plane electrode is arranged between infrabasal plate and the liquid crystal layer, this pixel electrode adopts metal material, be arranged between public electrode and the liquid crystal layer, wherein the zone of pixel electrode correspondence forms reflector space, zone around the pixel electrode forms penetration region, form an edge electric field between this pixel electrode and public electrode, and this pixel electrode adopts S shape warp architecture.
Compared to prior art, because it comprises two parts at least this pixel electrode, these two parts are crooked or this pixel electrode at least a portion employing convex structure to different directions respectively, so the fringe field that forms between pixel electrode and public electrode, and its direction of an electric field is not unique.It comprises two parts at least the pixel electrode pixel electrode, these two parts are respectively when different directions is crooked, itself and public electrode produce a pair of territory electric field at least, liquid crystal molecule is to I haven't seen you for ages along both direction deflection under this electric field action, make this pixel on display effect, be divided into two zones at least, the aberration that two zones cause can compensate mutually, and pixel electrode at least a portion is when adopting convex structure, itself and public electrode produce a multiple domain electric field, further compensate for chromatic aberration, therefore, this liquid crystal indicator contrast on all directions strengthens, thereby viewing angle characteristic is better.
[description of drawings]
Fig. 1 is the half penetrated liquid crystal indicator floor map of prior art.
Fig. 2 is the half penetrated liquid crystal indicator pixel electrode structure of a prior art synoptic diagram.
Fig. 3 is the half penetrated liquid crystal indicator first embodiment floor map of the present invention.
Fig. 4 is the half penetrated liquid crystal indicator pixel electrode structure of a first embodiment of the invention synoptic diagram.
Fig. 5 is the half penetrated liquid crystal indicator pixel electrode one regional enlarged diagram of first embodiment of the invention.
Fig. 6 is the reflective LCD device second embodiment floor map of the present invention.
Fig. 7 is the half penetrated liquid crystal indicator pixel electrode structure of a second embodiment of the invention synoptic diagram.
Fig. 8 is the half penetrated liquid crystal indicator pixel electrode one regional enlarged diagram of second embodiment of the invention.
Fig. 9 is half penetrated liquid crystal indicator the 3rd embodiment floor map of the present invention.
[embodiment]
Seeing also Fig. 3, is the diagrammatic cross-section of half penetrated liquid crystal indicator first embodiment of the present invention.Infrabasal plate 110, a liquid crystal layer 130, a public electrode 111 and a plurality of pixel electrode 112 that half penetrated liquid crystal indicator of the present invention comprises a upper substrate 120, is oppositely arranged with it.Wherein upper substrate 120 its inside surfaces are provided with a colored filter 117 and a both alignment layers 114 successively, and its outside surface is provided with a polaroid 115; Infrabasal plate 110, its inside surface are provided with public electrode 111, insulation course 113, pixel electrode 112 and both alignment layers 119 successively, and wherein public electrode 111 has reflector space 1111 and penetration region 1112, and pixel electrode 112 is to adopt transparent material to be made; Liquid crystal layer 130, it is between upper substrate 120 and infrabasal plate 110; Wherein, these public electrode 111 its reflector spaces 1111 are to utilize reflection of ambient light to carry out work, its penetration region 1112 is that the light that utilizes backlight (figure does not show) to launch carries out work, 111 of this pixel electrode 112 and public electrodes form an edge electric field, and this pixel electrode 112 adopts Z-shaped structure, and public electrode 111 surfaces have some projectioies; In both alignment layers 114 and 117 of colored filters a passivation layer 118 is set also, the reflector space 1111 of this only corresponding public electrode 111 in passivation layer 118 zones.For external environment light is more or less the same with the optical path of the light beam that sends from backlight by the penetration region of this liquid crystal layer 130 by the optical path of the reflector space of liquid crystal layer 130, this passivation layer 218 corresponding thickness of liquid crystal layer d2 should be less than all the other part thickness of liquid crystal layer d1, and d2 should and be less than or equal to 3/4 more than or equal to 1/4 with the ratio of d1, i.e. 1/4 ≦ d2/d1 ≦ 3/4, and when the ratio of d2 and d1 is 1/2, then these passivation layer 118 corresponding thickness of liquid crystal layer be all the other partly thickness of liquid crystal layer 1/2, promptly the thickness of liquid crystal layer of this reflector space be this penetration region thickness of liquid crystal layer 1/2.Because the reflector space thickness of liquid crystal layer of this liquid crystal layer 130 is 1/2 of this penetration region liquid crystal depth, so equate with the optical path of the light beam that sends from backlight by the penetration region of this liquid crystal layer 130 at the optical path of extraneous surround lighting by the reflector space of this liquid crystal layer 130, be that light is identical with its phase delay after the penetration region through reflector space, therefore guarantee that it has similar optical characteristics, the display quality of this liquid crystal indicator is improved.
Seeing also Fig. 4 and Fig. 5, is the half penetrated liquid crystal indicator first embodiment pixel electrode structure synoptic diagram of the present invention and its regional area enlarged diagram.Gate line 121 control TFT 123 electric switches provide electric signal to pixel electrode 112 by data line 122.Because pixel electrode 112 adopts the zigzag structure, thereby it can produce two territories electric field (not indicating) of two different directions behind the adding voltage, the direction of an electric field and the direction of an electric field below the broken line bending place that are its top, broken line bending place among the regional V are inconsistent, liquid crystal molecule 116 its yawing moments and the liquid crystal molecule 116 below the broken line bending place that are positioned at top, broken line bending place among the then regional V are inconsistent, make this pixel on display effect, be divided into two zones, the aberration that two zones cause can compensate mutually, therefore, this liquid crystal indicator contrast on all directions strengthens, thereby viewing angle characteristic is better.Data line 122 can adopt the zigzag structure identical with pixel electrode 112, also can adopt rectilinear structure.
Seeing also Fig. 6, is the diagrammatic cross-section of half penetrated liquid crystal indicator second embodiment of the present invention.Infrabasal plate 210, a liquid crystal layer 230, a public electrode 211 and a plurality of pixel electrode 212 that half penetrated liquid crystal indicator of the present invention comprises a upper substrate 220, is oppositely arranged with it.Wherein upper substrate 220 its inside surfaces are provided with a colored filter 217 and a both alignment layers 214 successively, and its outside surface is provided with a polaroid 215; One infrabasal plate 210, its inside surface is provided with public electrode 211, insulation course 213, pixel electrode 212 and both alignment layers 219 successively, wherein this public electrode 211 is to adopt transparent material to be made, pixel electrode 212 is to adopt the metal material with reflecting properties, thereby the zone of pixel electrode 212 correspondences formation reflector space, and the zone around the pixel electrode 212 forms penetration region; Liquid crystal layer 230, it is between upper substrate 220 and infrabasal plate 210; 211 of this pixel electrode 212 and public electrodes form an edge electric field, and this electric field can drive reflector space and penetration region simultaneously, and this pixel electrode 212 adopts S shape structure; In both alignment layers 214 and 217 of colored filters a passivation layer 218 is set also, these passivation layer 218 zones are respective pixel electrode, i.e. reflector space only.For external environment light is more or less the same with the optical path of the light beam that sends from backlight by the penetration region of this liquid crystal layer 230 by the optical path of the reflector space of liquid crystal layer 230, this passivation layer 218 corresponding thickness of liquid crystal layer d2 should be less than all the other part thickness of liquid crystal layer d1, and d2 should be less than or equal to 3/4 with the ratio of d1 more than or equal to 1/4, i.e. 1/4 ≦ d2/d1 ≦ 3/4, and when the ratio of d2 and d1 is 1/2, then the thickness of liquid crystal layer of this reflector space be this penetration region thickness of liquid crystal layer 1/2.Because the reflector space thickness of liquid crystal layer of this liquid crystal layer 230 is 1/2 of this penetration region liquid crystal depth, so equate with the optical path of the light beam that sends from backlight by the penetration region of this liquid crystal layer 230 at the optical path of extraneous surround lighting by the reflector space of this liquid crystal layer 230, guarantee that it has similar optical characteristics, the display quality of this liquid crystal indicator is improved.
Seeing also Fig. 7 and Fig. 8, is half penetrated liquid crystal indicator second embodiment pixel electrode structure synoptic diagram of the present invention and one zone enlarged diagram.Gate line 221 control TFT 223 electric switch states provide electric signal to pixel electrode 212 by data line 222.Because pixel electrode 212 adopts S shape structure, thereby apply that its direction of an electric field is a continually varying behind the voltage, form a direction of an electric field continually varying continuous domain, because liquid crystal molecule 216 is along direction of an electric field deflection, therefore liquid crystal molecule 216 yawing moments also are to change continuously in the pixel region VIII, make this pixel on display effect, form the continuum, the aberration that the continuum causes can compensate mutually, therefore, this liquid crystal indicator contrast on all directions strengthens, thereby viewing angle characteristic is better.
Seeing also Fig. 9, is the diagrammatic cross-section of half penetrated liquid crystal indicator the 3rd embodiment of the present invention.The liquid crystal indicator of this embodiment is compared with the liquid crystal indicator of first embodiment, be on public electrode 311 bases, to add one deck half penetrated bed 320, this public electrode 111 is transparent, this half penetrated bed has reflector space 3201 and penetration region 3202, replaces the public electrode 111 with reflector space 1111 and penetration region 1112 with this.Its principle of this embodiment is identical with first embodiment with effect.
Claims (18)
1. half penetrated liquid crystal indicator, it comprises a upper substrate, the infrabasal plate that is oppositely arranged with it, a liquid crystal layer, a public electrode and a plurality of pixel electrode, this liquid crystal layer is between upper substrate and infrabasal plate, this public electrode is that a plane electrode and its have reflector space and penetration region, be arranged between infrabasal plate and the liquid crystal layer, this pixel electrode is arranged between public electrode and the liquid crystal layer, it is characterized in that: form an edge electric field between this pixel electrode and public electrode, and this pixel electrode adopts S shape warp architecture.
2. half penetrated liquid crystal indicator as claimed in claim 1 is characterized in that: this pixel electrode is a transparent material.
3. half penetrated liquid crystal indicator as claimed in claim 1 is characterized in that: this public electrode surface has some projectioies.
4. half penetrated liquid crystal indicator as claimed in claim 1 is characterized in that: adhere to a both alignment layers between upper substrate and liquid crystal layer.
5. half penetrated liquid crystal indicator as claimed in claim 4 is characterized in that: adhere to a colored filter between upper substrate and both alignment layers.
6. half penetrated liquid crystal indicator as claimed in claim 5 is characterized in that: further adhere to a passivation layer between colored filter and the both alignment layers, this passivation layer zone is corresponding with the reflector space of the public electrode of this infrabasal plate.
7. half penetrated liquid crystal indicator as claimed in claim 6 is characterized in that: with the corresponding thickness of liquid crystal layer of this passivation layer with all the other partly the ratio of thickness of liquid crystal layer more than or equal to 1/4 and smaller or equal to 3/4.
8. half penetrated liquid crystal indicator as claimed in claim 1 is characterized in that: infrabasal plate is provided with a plurality of data lines and is electrically connected with pixel electrode, and this data line at least a portion adopts convex structure.
9. half penetrated liquid crystal indicator as claimed in claim 1 is characterized in that: infrabasal plate is provided with a plurality of data lines and is electrically connected with pixel electrode, and this data line adopts rectilinear structure.
10. half penetrated liquid crystal indicator, it comprises a upper substrate, the infrabasal plate that is oppositely arranged with it, one liquid crystal layer, one public electrode and a plurality of pixel electrode, this liquid crystal layer is between upper substrate and infrabasal plate, this public electrode is that a plane electrode is arranged between infrabasal plate and the liquid crystal layer, this pixel electrode adopts metal material, be arranged between public electrode and the liquid crystal layer, wherein the zone of pixel electrode correspondence forms reflector space, zone around the pixel electrode forms penetration region, it is characterized in that: form an edge electric field between this pixel electrode and public electrode, and this pixel electrode adopts S shape warp architecture.
11. half penetrated liquid crystal indicator as claimed in claim 10 is characterized in that: this public electrode is a transparent material.
12. half penetrated liquid crystal indicator as claimed in claim 10 is characterized in that: this public electrode surface has some projectioies.
13. half penetrated liquid crystal indicator as claimed in claim 10 is characterized in that: adhere to a both alignment layers between upper substrate and liquid crystal layer.
14. half penetrated liquid crystal indicator as claimed in claim 13 is characterized in that: adhere to a colored filter between upper substrate and both alignment layers.
15. half penetrated liquid crystal indicator as claimed in claim 14 is characterized in that: further adhere to a passivation layer between colored filter and the both alignment layers, this passivation layer zone is corresponding with the reflector space of the pixel electrode of this infrabasal plate.
16. half penetrated liquid crystal indicator as claimed in claim 15 is characterized in that: with the corresponding thickness of liquid crystal layer of this passivation layer with all the other partly the ratio of thickness of liquid crystal layer more than or equal to 1/4 and smaller or equal to 3/4.
17. half penetrated liquid crystal indicator as claimed in claim 10 is characterized in that: infrabasal plate is provided with a plurality of data lines and is electrically connected with pixel electrode, this data line at least a portion adopts convex structure.
18. half penetrated liquid crystal indicator as claimed in claim 10 is characterized in that: infrabasal plate is provided with a plurality of data lines and is electrically connected with pixel electrode, this data line adopts rectilinear structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100274385A CN100483226C (en) | 2004-05-28 | 2004-05-28 | Semi- transmissive liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100274385A CN100483226C (en) | 2004-05-28 | 2004-05-28 | Semi- transmissive liquid crystal display device |
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| CN1704823A CN1704823A (en) | 2005-12-07 |
| CN100483226C true CN100483226C (en) | 2009-04-29 |
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| CNB2004100274385A Expired - Fee Related CN100483226C (en) | 2004-05-28 | 2004-05-28 | Semi- transmissive liquid crystal display device |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5278720B2 (en) * | 2006-03-27 | 2013-09-04 | Ｎｌｔテクノロジー株式会社 | Liquid crystal panel, liquid crystal display device and terminal device |
| JP4916770B2 (en) | 2006-05-22 | 2012-04-18 | 三菱電機株式会社 | Liquid crystal display device and manufacturing method thereof |
| JP4203676B2 (en) | 2006-09-27 | 2009-01-07 | カシオ計算機株式会社 | Liquid crystal display element |
| KR101298424B1 (en) * | 2008-12-08 | 2013-08-20 | 엘지디스플레이 주식회사 | Liquid crystal display of fringe field switching type |
| TWI693452B (en) * | 2018-10-04 | 2020-05-11 | 友達光電股份有限公司 | Liquid crystal device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5745207A (en) * | 1995-11-30 | 1998-04-28 | Matsushita Electric Industrial Co., Ltd. | Active matrix liquid crystal display having electric fields parallel to substrates |
| CN1246631A (en) * | 1998-07-10 | 2000-03-08 | 松下电器产业株式会社 | Reflection-type liquid crystal display device |
| US20020093614A1 (en) * | 2000-12-29 | 2002-07-18 | Hong-Man Moon | Substrate for in-plane switching mode liquid crystal display device and method for fabricating the same |
| US6483566B2 (en) * | 2000-08-07 | 2002-11-19 | Lg Philips Lcd, Ltd. | Liquid crystal display device with wide viewing angle |
| US20030043327A1 (en) * | 2001-08-29 | 2003-03-06 | Tetsuya Aoyama | Liquid crystal display apparatus using IPS display mode with high numerical aperture |
| US6570634B2 (en) * | 2000-04-07 | 2003-05-27 | Lg.Philips Lcd Co., Ltd. | Transflective color LCD device |
| US6650385B1 (en) * | 2002-04-24 | 2003-11-18 | Prime View International Co., Ltd. | Scattering fringe field optical-compensated reflective and transflective liquid crystal display |
-
2004
- 2004-05-28 CN CNB2004100274385A patent/CN100483226C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5745207A (en) * | 1995-11-30 | 1998-04-28 | Matsushita Electric Industrial Co., Ltd. | Active matrix liquid crystal display having electric fields parallel to substrates |
| CN1246631A (en) * | 1998-07-10 | 2000-03-08 | 松下电器产业株式会社 | Reflection-type liquid crystal display device |
| US6570634B2 (en) * | 2000-04-07 | 2003-05-27 | Lg.Philips Lcd Co., Ltd. | Transflective color LCD device |
| US6483566B2 (en) * | 2000-08-07 | 2002-11-19 | Lg Philips Lcd, Ltd. | Liquid crystal display device with wide viewing angle |
| US20020093614A1 (en) * | 2000-12-29 | 2002-07-18 | Hong-Man Moon | Substrate for in-plane switching mode liquid crystal display device and method for fabricating the same |
| US20030043327A1 (en) * | 2001-08-29 | 2003-03-06 | Tetsuya Aoyama | Liquid crystal display apparatus using IPS display mode with high numerical aperture |
| US6650385B1 (en) * | 2002-04-24 | 2003-11-18 | Prime View International Co., Ltd. | Scattering fringe field optical-compensated reflective and transflective liquid crystal display |
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