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Liquid crystal display device and driving method thereof

A technology of a liquid crystal display device and a driving method, which is applied to static indicators, instruments, nonlinear optics, etc., and can solve the problems of reduced contrast and light leakage in a dark state with a narrow viewing angle, and achieve the effect of preventing light leakage in a dark state

Active Publication Date: 2021-06-22
KUSN INFOVISION OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide a liquid crystal display device and its driving method to solve the problem of light leakage and reduced contrast in the narrow viewing angle dark state

Method used

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  • Liquid crystal display device and driving method thereof
  • Liquid crystal display device and driving method thereof
  • Liquid crystal display device and driving method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] like Figure 3 to Figure 5 As shown, the liquid crystal display device provided by Embodiment 1 of the present invention includes a color filter substrate 20 , an array substrate 30 opposite to the color filter substrate 20 , and a liquid crystal layer 40 located between the color filter substrate 20 and the array substrate 30 . Wherein the liquid crystal layer 40 adopts positive liquid crystal molecules (liquid crystal molecules with positive dielectric anisotropy), and the positive liquid crystal molecules in the liquid crystal layer 40 can have a small initial pretilt angle between the color filter substrate 20 and the array substrate 30 , the range of the initial pretilt angle can be less than or equal to 10 degrees, ie: 0°≦θ≦10°, so as to reduce the response time of the vertical deflection of positive liquid crystal molecules.

[0040]The color filter substrate 20 is provided with a color resist layer 22 , a black matrix (BM) 21 , a flat layer 23 and a viewing angl...

Embodiment 2

[0063] like Figure 8 , Figure 10 and Figure 11 As shown, the liquid crystal display device provided by Embodiment 2 of the present invention is the same as Embodiment 1 ( image 3 , Figure 4 and Figure 5 ) The liquid crystal display devices in ) are basically the same, the difference is:

[0064] In this embodiment, the insulating layer 36 is formed by the entire first insulating film J1, and a plurality of insulating ridges 361 are formed by etching and patterning the second insulating film J2.

[0065] Further, the first common electrode 35 is formed by the entire first conductive layer film T1, the pixel electrode 37 is formed by etching and patterning the second conductive layer film T2, and the second common electrode 38 is formed by the third conductive layer film T3. Etched and patterned. specifically:

[0066] like Figure 12a As shown, a flat layer 34 is covered on the substrate on which the scan lines 31 , the data lines 32 and the thin film transistors ...

Embodiment 3

[0074] like Figure 9 As shown, the liquid crystal display device provided by Embodiment 3 of the present invention is the same as Embodiment 2 ( Figure 8 ) in the liquid crystal display device is basically the same, the difference is that in this embodiment, the electrode strips of the second common electrode 38 are disconnected at the bending part of the "<" shape structure, so that the second common electrode 38 is in the pixel unit P is divided into upper and lower parts.

[0075] Those skilled in the art should understand that the rest of the structure and working principles of this embodiment are the same as those of Embodiment 2, and will not be repeated here.

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Abstract

The invention discloses a liquid crystal display device and a driving method. The liquid crystal display device comprises a color filter substrate, an array substrate, and a liquid crystal layer located between the color filter substrate and the array substrate. The color filter substrate is provided with a viewing angle control electrode, and the array substrate includes A plurality of pixel units, each pixel unit is provided with a pixel electrode, the array substrate is provided with a first common electrode, the pixel electrode and the first common electrode are respectively located on the upper and lower sides of the insulating layer, and a plurality of insulating protrusions are formed on the insulating layer. Ridge, the second common electrode is also provided on the array substrate, the second common electrode and the pixel electrode are comb-shaped structures with slits in each pixel unit, and the electrode strips of the second common electrode and the electrode strips of the pixel electrode Alternately arranged, the electrode strips of the second common electrode are respectively arranged on a plurality of insulating ridges, and the electrode strips of the second common electrode protrude above the electrode strips of the pixel electrodes, so that the electrode strips of the second common electrode are compared with the electrode strips of the pixel electrodes The strip is closer to the color filter substrate.

Description

technical field [0001] The invention relates to the field of liquid crystal display technology, in particular to a liquid crystal display device and a driving method thereof. Background technique [0002] Liquid crystal display (LCD) has the advantages of good picture quality, small size, light weight, low driving voltage, low power consumption, no radiation and relatively low manufacturing cost, and it occupies a dominant position in the field of flat panel display. [0003] With the continuous progress of liquid crystal display technology, the viewing angle of the display has been widened from about 120° to more than 160°. While enjoying the visual experience brought by the large viewing angle, people also hope to effectively protect business secrets and personal privacy. Avoid business loss or embarrassment caused by the leakage of screen information. Therefore, in addition to wide viewing angles, there is also a need for displays that can be switched to narrow viewing a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1343G02F1/13G09G3/36
CPCG02F1/1323G02F1/134309G09G3/36
Inventor 沈家军周学芹
Owner KUSN INFOVISION OPTOELECTRONICS
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