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, nonlinear optics, instruments, etc., can solve the problems of reduced contrast ratio, narrow viewing angle, and dark-state light leakage, and achieves the effect of preventing dark-state light leakage.

Active Publication Date: 2019-02-12
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] Such as 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 a...

Embodiment 2

[0063] Such as Figure 8 , Figure 10 with 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 with 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] Such as 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 tran...

Embodiment 3

[0074] Such as 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 includes a color film substrate, an array substrate and a liquid crystal layer located between the color film substrate and the array substrate. A view angle control electrode is disposed on the color film substrate. The array substrate includes a plurality of pixel units. Pixel electrodes are disposed in all the pixel units. A first public electrode is disposed on the array substrate. The pixel electrodes and the first public electrode are respectively located on an upper side and alower side of an insulating layer. A plurality of insulating convex ridges are formed on the insulating layer. Second public electrodes are also disposed on the array substrate. All the second publicelectrodes and the pixel electrodes are comb-shaped structures with slits in all the pixel units. Electrode strips of the second public electrodes and electrode strips of the pixel electrodes are alternately arranged. The electrode strips of the second public electrodes are respectively disposed on the plurality of insulating convex ridges, and protrude above the electrode strips of the pixel electrodes to enable the electrode strips of the second public electrodes to be closer to the color film substrate than the electrode strips of the pixel electrodes.

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 advancement of liquid crystal display technology, the viewing angle of the display has been expanded from about 120° to more than 160°. While enjoying the visual experience brought by the large viewing angle, people also hope to effectively protect commercial secrets and personal privacy. Avoid commercial loss or embarrassment caused by information leakage on the screen. Therefore, in addition to wide viewing angles, there is also a need for displays that can be switched to narrow v...

Claims

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Application Information

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Patent Type & Authority Applications(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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