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Active driven liquid crystal display

A liquid crystal display, source-driven technology, applied to static indicators, instruments, nonlinear optics, etc., can solve problems such as unfavorable manufacturing yield, dark state light leakage, and difficulty in uniform display at different viewing angles, to achieve good viewing angle uniformity, The effect of improving stability

Active Publication Date: 2011-04-06
SHANTOU GOWORLD DISPLAY (PLANT II) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current mainstream active-driven liquid crystal display generally adopts the twisted nematic liquid crystal arrangement (TN) mode, but the TN mode is characterized by light leakage in the dark state, which cannot achieve high-contrast display effects, and it is also difficult to achieve uniform display at different viewing angles. , so this TN mode cannot give full play to the advantages of active drive
[0004] In addition, the TN mode requires strong friction for orientation, and the static electricity brought by this process will cause damage to the TFT device, which is not conducive to the improvement of manufacturing yield

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0052] The display area of ​​this actively driven liquid crystal display consists of an array of pixels. Such as figure 1 with figure 2 As shown, the pixel includes a thin film transistor 1 and a lighting area, the lighting area is the area where the pixel electrode 5 and the common electrode 4 overlap in the pixel; the lighting area includes an upper transparent substrate 2, a lower transparent substrate 3, a common electrode 4, and a pixel electrode 5. The upper vertical alignment layer 6, the lower vertical alignment layer 7 and the negative liquid crystal layer 8, the upper vertical alignment layer 6 is arranged on the inside of the upper transparent substrate 2, the lower vertical alignment layer 7 is arranged on the inner side of the lower transparent substrate 3, and the negative The liquid crystal layer 8 is arranged between the upper vertical alignment layer 6 and the lower vertical alignment layer 7, the common electrode 4 is arranged between the upper vertical ali...

Embodiment 2

[0068] In this embodiment, a chiral agent is added to the negative liquid crystal of the negative liquid crystal layer 8 . The rest of the structure of this embodiment is the same as that of Embodiment 1.

[0069] Adding a chiral agent to the negative liquid crystal, combined with the orientation effect of the pinwheel-shaped electrode pattern, can form a twisted arrangement structure when an electric field is applied, and its characteristics are as follows: 1. DD near the common electrode 4 where the strip groove 41 is located On the liquid crystal layer, there is a radial arrangement, which is characterized by a radial arrangement centered on the hole 51 in the oblique direction of the liquid crystal molecules, such as Figure 9 2. Due to the action of the chiral agent, a series of liquid crystal layers near the common electrode 4 transition to the pixel electrode 5 where the hole 51 is located (such as Figure 8 In the EE' liquid crystal layer and FF' liquid crystal layer)...

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Abstract

The invention relates to an active driven liquid crystal display. A display area comprises pixel arrays. Pixels comprise thin film transistors and lighting areas, wherein the lighting areas are overlapped areas of pixel electrodes and public electrodes in the pixels and are characterized in that: in each lighting area, the public electrodes or the pixel electrodes are provided with a plurality ofstrip-shaped grooves; polygon areas defined by a plurality of adjacent strip-shaped grooves or polygon areas defined by the strip-shaped grooves and the edges of the lighting areas form domain areas;all domain areas keep electric conductance; and correspondingly, positions corresponding to geometric centers of the domain areas of the pixel electrodes or the public electrodes and the public electrodes or the pixel electrodes are provided with holes. The invention has the advantage of high contrast, realizes multi-domain display without visual angle blind areas and has wide visual angles. A preferable scheme is as follows: a chiral additive is added into negative liquid crystals, thereby eliminating polarized shadow, improving the light transmittance of the liquid crystal display and obtaining better visual angle characteristics and chroma controllability.

Description

technical field [0001] The invention relates to a liquid crystal display, in particular to an actively driven liquid crystal display. Background technique [0002] Actively driven liquid crystal display, because each pixel is independently driven by the included TFT device, compared with passively driven display, it has the advantages of high number of display lines and independent driving principle and liquid crystal working principle, so it can be used by liquid crystal The design of the working principle achieves a better display effect. [0003] The current mainstream active-driven liquid crystal display generally adopts the twisted nematic liquid crystal arrangement (TN) mode, but the TN mode is characterized by light leakage in the dark state, which cannot achieve high-contrast display effects, and it is also difficult to achieve uniform display at different viewing angles. , so this TN mode cannot give full play to the advantages of active driving. [0004] In addit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/133G02F1/1362G02F1/1368G02F1/1335G02F1/13363
Inventor 吕岳敏吴永俊沈奕林刚吴利刚余荣黄晓炀
Owner SHANTOU GOWORLD DISPLAY (PLANT II) CO LTD
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