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Liquid crystal display

A liquid crystal display device and liquid crystal layer technology, applied in liquid crystal materials, optics, instruments, etc., can solve problems such as image defects and singular points, and achieve the effect of high contrast characteristics

Active Publication Date: 2010-11-10
INNOCOM TECH SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This phenomenon causes a singular point to exist in each pixel, which makes the image displayed by the liquid crystal display device flawed.

Method used

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Experimental program
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Effect test

Embodiment approach 1

[0059] This embodiment is an alignment device using bumps or fringe electric fields under a non-rubbing alignment framework. Such as Figure 7 Shown is a structural diagram of twisted vertically aligned liquid crystals in a single pixel display area 701 using surrounding bumps 702 to achieve an alignment effect. exist Figure 7 In the schematic diagram of , no voltage is applied to the liquid crystal layer, and the twisted vertical alignment liquid crystal used is a negative nematic liquid crystal material, and an appropriate chiral agent is also mixed to make Δnd and d / p meet the optimal parameter conditions. The initial liquid crystal molecules are made perpendicular to the surface of the substrate by the vertical alignment film, and the liquid crystal molecules close to the bump structure will tilt toward a specific direction to form a pre-tilt angle. Figures 8A to 8D Under the conditions of Δnd=0.56 and d / p=0.278, the result of using 3D finite element analysis to simula...

Embodiment approach 2

[0065] This embodiment is also based on the framework of non-friction alignment, using the electrode pattern with periodic structure between the electrodes and the electrode gap as the first alignment device, and matching the surrounding bump structure, the surrounding concave structure or the surrounding electrode pattern structure The formed edge oblique electric field distribution is used to control the twisted vertically aligned liquid crystal molecules to arrange in a specific direction. Figure 12 Take the surrounding edge oblique electric field structure 1201 as an example, and the substrate electrode 1202 under the display area is configured as the first alignment device such as structures (1)-(7). In the above structure, the width of the etching gap L2 between the lower substrate alignment electrode L1 and the ITO electrode is 3-5 μm, which can provide a symmetrical arrangement of the liquid crystal molecules. At the same time, because the electrode has an etching gap...

Embodiment approach 3

[0068] The above-mentioned alignment devices all allow the liquid crystal molecules to form a continuous domain arrangement, and further extension can also allow the molecules to form a multi-domain arrangement. Such as Figure 14 Shown is a schematic diagram of an alignment structure that enables liquid crystal molecules to form multiple domain arrangements; wherein, structures (1), (2) and (3) are respectively on the upper substrate 1401 and the lower substrate 1402, with bump structures 1403 or electrode gaps The structures 1404 are arranged in a "く" shape, while the structures (4) and (5) are arranged in a cross shape with bump structures 1405 or electrode gaps 1406 and combined with radial electrode gap structures 1407 . All of the above structures allow the liquid crystal molecules to form an arrangement of multiple domains.

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Abstract

The invention provides a novel liquid crystal display, in particular to a wide-visual-angle liquid crystal display providing high permeability for the display. The liquid crystal display of the invention structurally comprises at least one orientation device and a liquid crystal layer, wherein the orientation device makes liquid crystal molecules form continuous domain arrangement or multi-domain arrangement in the display region, and further, the liquid crystal molecules have the wide-visual-angle characteristics in the optical aspect; and the liquid crystal layer is made of nematic liquid crystal materials doped with chirals, and the optimum conditions of the delta(nd) and the d / p of the liquid crystal are found, so the liquid crystal molecule structures ranged in each direction can reach the optimum permeability for forming the liquid crystal display with wide visual angle and high permeability.

Description

technical field [0001] The present invention relates to a liquid crystal display device, in particular to a wide viewing angle liquid crystal display device with high transmittance characteristics. Background technique [0002] The liquid crystal display device utilizes the property that liquid crystal molecules have different polarization or refraction effects on light in different alignment states to control the amount of light passing through, thereby enabling the liquid crystal display device to generate images. Traditional Twisted Nematic (TN) liquid crystal display devices have very good transmission properties, but are affected by the liquid crystal molecular structure and optical properties, and relatively narrow viewing angles. Therefore, how to make the display have both a wide viewing angle and a high light utilization rate will create a new breakthrough in panel display technology. [0003] In order to solve this problem, the industry has recently developed othe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1333G02F1/1337C09K19/54C09K19/02
Inventor 范士鸿沈毓仁彭政忠李欣达
Owner INNOCOM TECH SHENZHEN
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