CN1538217A - Liquid crystal display device electric field with transverse - Google Patents
Liquid crystal display device electric field with transverse Download PDFInfo
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- CN1538217A CN1538217A CNA031142850A CN03114285A CN1538217A CN 1538217 A CN1538217 A CN 1538217A CN A031142850 A CNA031142850 A CN A031142850A CN 03114285 A CN03114285 A CN 03114285A CN 1538217 A CN1538217 A CN 1538217A
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- electric field
- lcd
- transverse electric
- liquid crystal
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Abstract
A LCD with transverse electric field has a color filter, a TFT array, a LC layer between said color filter and TFT array. Said TFT array has a TFT substrate, a convex layer with multiple bosses and an electrode array with multiple shared electrodes and pixel electrodes. It has high luminous flux efficiency.
Description
[technical field]
The present invention relates to a kind of LCD, particularly a kind of LCD with transverse electric field.
[background technology]
LCD has been widely used in various fields, yet there is topmost two large problems for traditional LCD, at first, when when certain angle is watched, the dark attitude brightness of LCD is with rapid increase (brightening) and variable color (abbreviation gray-scale inversion).Usually have only 90 ° of visual angles for the LCD of older type especially, just the right and left is each 45 °.This problem can't be watched display picture simultaneously for a plurality of beholders.Another main problem promptly is that traditional LCD response time is slower, and the picture that this problem can't satisfy fast moving in film and the recreation shows demand.
LCD with transverse electric field (In-Plane Switch LCD, abbreviate IPS-LCD as) be based on the above problem of conventional liquid crystal and the solution that proposes, itself and general stable twisted nematic (Twisted Nematic, TN) difference of LCD be in, the shared electrode of LCD with transverse electric field and pixel electrode are to be made on the same TFT substrate, its horizontal component of electric field that utilizes shared electrode arranged side by side in the pixel and pixel electrode to be produced in operation drives liquid crystal layer, makes liquid crystal layer reach the purpose that logical light switches at plane torsion.Because liquid crystal layer, is compared the three-dimensional of T N pattern surface level reversing in the same way and is reversed under dark attitude and be difficult for light leak, and has bigger angular field of view.This moment, liquid crystal reverse speed and electric field intensity were proportionate, and directly were reflected in liquid crystal response speed.The horizontal electrode that utilizes different directions to arrange in addition can drive liquid crystal layer and do toward the varying level direction and reverse, and constitutes multidimensional territory (Multi-Domain), and this mode can increase bigger visual angle.
Existing LCD with transverse electric field as shown in Figures 1 and 2, liquid crystal layer 14 injects between colored filters 10 and the TFT substrate 12, wherein this colored filter 10 and TFT substrate 12 are by a spaced walls 20 supports.The electrode structure of this IPS-LCD comprises gate line 13, data line 11; Two adjacent gate line 13 and two adjacent data line 11 formations one pixel regions; Pectination shared electrode 17 is formed on the TFT substrate 12; Pectination pixel electrode 18 is formed on the TFT substrate 12; Wherein the broach of pixel electrode 18 is inserted between the broach of shared electrode 17.This IPS-LCD utilizes the horizontal component of electric field of 17 of pixel electrode 18 and shared electrode to drive liquid crystal layer 14 it is reversed at surface level.When driven (as shown in Figure 3), horizontal component of electric field that this pixel electrode 18 and shared electrode are 17 and imperfect parallel electric field, therefore, along Z-direction, electric field presents curve distribution, and intensity decays along Z-direction.This phenomenon causes the liquid crystal layer 14 of nearly colored filter 10 sides and nearly TFT substrate 12 sides to reverse degree difference, influences the logical efficient of light.
[summary of the invention]
For overcoming the logical inefficient defective of light in the existing LCD with transverse electric field, the invention provides a kind of LCD with transverse electric field with the logical efficient of high light.
The technical scheme of technical solution problem of the present invention is: a kind of LCD with transverse electric field is provided, and it comprises a colored filter and a tft array, and liquid crystal layer is packaged between this colored filter and this tft array.This tft array comprises a TFT substrate, a convexity layer and an electrod-array, and this convexity layer is positioned at this TFT substrate, and it comprises a plurality of projectioies, and this electrod-array is positioned at this TFT substrate, and it comprises a plurality of shared electrode and the pixel electrode that forms in this convexity layer.
Compared with prior art, LCD with transverse electric field utilization of the present invention is positioned at the equivalent area of the convexity layer increase parallel pole between colored filter and TFT substrate, and next door between replacing between original colored filter and TFT substrate.Its advantage is can increase the equivalent electric field strength under same drive voltage, and then reduces the liquid crystal response time.On the other hand, this advantage also can keep former electric field intensity, and electrode separation is widened, and increases the ratio (aperture opening ratio) in light-permeable district in the pixel, improves LCD with transverse electric field pixel aperture ratio problem on the low side.Secondly, the present invention also can improve the uniformity coefficient of electric field between colored filter and tft array, reduces colored filter side and tft array side liquid crystal layer and reverses degree difference, promotes the logical efficient of light.
[description of drawings]
Fig. 1 is the diagrammatic cross-section of prior art LCD with transverse electric field.
Fig. 2 is the dot structure synoptic diagram of prior art LCD with transverse electric field.
Electric Field Distribution synoptic diagram when Fig. 3 is prior art LCD with transverse electric field on-load voltage.
Fig. 4 is the diagrammatic cross-section of LCD with transverse electric field of the present invention.
Fig. 5 is the dot structure synoptic diagram of LCD with transverse electric field of the present invention.
Electric Field Distribution synoptic diagram when Fig. 6 is a LCD with transverse electric field on-load voltage of the present invention.
[embodiment]
Please refer to Fig. 4, LCD with transverse electric field of the present invention comprises a colored filter 3, a tft array 8 and a plurality of spaced walls 4, and wherein this spaced walls 4 is used to support this optical filter 3 and this tft array 8 between this colored filter 3 and this tft array 8.Liquid crystal layer 7 is packaged between this colored filter 3 and this tft array 8.
Please cooperate with reference to Fig. 5, this tft array 8 comprises a TFT substrate 5, an electrod-array 2 and a convexity layer 6, and wherein this electrod-array 2 and convexity layer 6 are positioned on this TFT substrate 5.
Electrod-array 2 is made up of a plurality of pixels, wherein in a pixel region, electrod-array 2 comprises the gate line 22 of a horizontally set, one data line 21 that vertically is provided with, by a whippletree (not indicating) and three comb shape shared electrode 27 that broach 271,272,273 is constituted, and by a whippletree (not indicating) and two comb shape pixel electrodes 28 that broach 281,282 is constituted.Wherein, two broach, 281,282 staggered being inserted between three broach 271,272,273 of shared electrode 27 of pixel electrode 28 are so that a pixel region is divided into four sub-pixel area.The material of this pixel electrode 28 and this shared electrode 27 adopts transparent conductive body as indium tin oxide (Indium Tin Oxide is called for short ITO).
This convexity layer 6 is positioned on this TFT substrate 5, and is positioned under shared electrode 27 and the pixel electrode 28, comprises a plurality of protrudingly 61, protrudes to liquid crystal layer 7 sides.This is a plurality of protruding 61 corresponding with the broach 281,282,271,272,273 of pixel electrode 28 and shared electrode 27 respectively, wherein, broach 281,282,271,272,273 is plated on this respectively on a plurality of protruding 61, liquid crystal layer 7 orderly being arranged between two adjacent pixel electrodes 28 and the shared electrode 27 are to increase relative effective parallel area of two adjacent pixel electrodes 28 and 27 of shared electrode.
Referring again to Fig. 6, when driven, liquid crystal layer 7 produces under shared electrode 27 and 28 effect of electric field of pixel electrode and reverses, to realize passing through of light beam.Compared to prior art, under the moving voltage of identical driving, the parallel pole equivalent area increases, thereby can increase the equivalent electric field strength, thereby reduces the liquid crystal response time.On the other hand, this advantage also can keep former electric field intensity, and electrode separation is widened, to increase the ratio (aperture opening ratio) in light-permeable district in the pixel, to improve LCD with transverse electric field pixel aperture ratio problem on the low side.Secondly, the present invention also can improve the uniformity coefficient of electric field between colored filter and tft array, reduces colored filter side and tft array side liquid crystal layer and reverses degree difference, promotes the logical efficient of liquid crystal light.
Claims (8)
1. LCD with transverse electric field, comprise a colored filter and a tft array, liquid crystal layer is packaged between this colored filter and this tft array, wherein this tft array comprises that a TFT substrate and is positioned at the electrod-array of this TFT substrate, it is characterized in that: a convexity layer is positioned on this tft array, this convexity layer also comprises a plurality of projectioies, and wherein, this electrod-array comprises a plurality of shared electrode and a plurality of pixel electrode that is formed on this convexity layer.
2. LCD with transverse electric field as claimed in claim 1 is characterized in that this shared electrode and this pixel electrode all are transparent conductive bodies.
3. LCD with transverse electric field as claimed in claim 1 is characterized in that this shared electrode and this pixel electrode all are comb shapes.
4. LCD with transverse electric field as claimed in claim 1 is characterized in that this each shared electrode and this each pixel electrode comprise a plurality of broach.
5. LCD with transverse electric field as claimed in claim 4, a plurality of broach that it is characterized in that this pixel electrode are between a plurality of broach of this shared electrode.
6. LCD with transverse electric field as claimed in claim 4 is characterized in that these a plurality of broach are corresponding with a plurality of projectioies.
7. LCD with transverse electric field as claimed in claim 6 is characterized in that these a plurality of broach are plated on these a plurality of projectioies.
8. LCD with transverse electric field as claimed in claim 1 is characterized in that these a plurality of projectioies protrude to liquid crystal layer side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031142850A CN1322361C (en) | 2003-04-18 | 2003-04-18 | Liquid crystal display device electric field with transverse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031142850A CN1322361C (en) | 2003-04-18 | 2003-04-18 | Liquid crystal display device electric field with transverse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1538217A true CN1538217A (en) | 2004-10-20 |
| CN1322361C CN1322361C (en) | 2007-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031142850A Expired - Fee Related CN1322361C (en) | 2003-04-18 | 2003-04-18 | Liquid crystal display device electric field with transverse |
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| CN (1) | CN1322361C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105204246A (en) * | 2015-10-29 | 2015-12-30 | 武汉华星光电技术有限公司 | Transflective liquid crystal display panel |
| CN107219675A (en) * | 2017-08-02 | 2017-09-29 | 豪威半导体（上海）有限责任公司 | Lcos display |
| JP2018532159A (en) * | 2016-01-11 | 2018-11-01 | 深▲セン▼市華星光電技術有限公司 | IPS type TFT-LCD array substrate manufacturing method and IPS type TFT-LCD array substrate |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100336886B1 (en) * | 1998-08-24 | 2003-06-09 | 주식회사 현대 디스플레이 테크놀로지 | Reflective liquid crystal display device with high opening rate and high transmittance and its manufacturing method |
| TWI241425B (en) * | 2000-05-12 | 2005-10-11 | Ind Tech Res Inst | Structure of multi-domain wide-viewing angle liquid crystal display |
| TW573190B (en) * | 2000-08-14 | 2004-01-21 | Samsung Electronics Co Ltd | Liquid crystal display and fabricating method thereof |
| KR100720093B1 (en) * | 2000-10-04 | 2007-05-18 | 삼성전자주식회사 | liquid crystal display |
-
2003
- 2003-04-18 CN CNB031142850A patent/CN1322361C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105204246A (en) * | 2015-10-29 | 2015-12-30 | 武汉华星光电技术有限公司 | Transflective liquid crystal display panel |
| US10042202B2 (en) | 2015-10-29 | 2018-08-07 | Wuhan China Star Optoelectronics Technology Co., Ltd | Transflective liquid crystal display pane |
| CN105204246B (en) * | 2015-10-29 | 2018-11-23 | 武汉华星光电技术有限公司 | Transflective liquid crystal display panel |
| JP2018532159A (en) * | 2016-01-11 | 2018-11-01 | 深▲セン▼市華星光電技術有限公司 | IPS type TFT-LCD array substrate manufacturing method and IPS type TFT-LCD array substrate |
| CN107219675A (en) * | 2017-08-02 | 2017-09-29 | 豪威半导体（上海）有限责任公司 | Lcos display |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1322361C (en) | 2007-06-20 |
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Granted publication date: 20070620 Termination date: 20170418 |