Liquid crystal display device

A technology of liquid crystal display device and liquid crystal layer, which is applied in static indicators, instruments, nonlinear optics, etc., and can solve the problems of doubling the output capacity of the system, increasing the cost, flickering of the panel, etc.

Active Publication Date: 2020-01-03
KUSN INFOVISION OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a liquid crystal display device to solve the panel flicker phenomenon caused by the asymmetry of the electric field under the existing wide and narrow viewing angle panel structure. In order to solve the problem of panel flicker, it is necessary to use a high frame frequency drive circuit, resulting The requirement for system output capacity will be doubled, causing the problem of cost increase

Method used

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  • Liquid crystal display device
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Examples

Experimental program
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Effect test

no. 1 example

[0034] image 3 It is a schematic diagram of a partial circuit structure of a liquid crystal display device in the first embodiment of the present invention, Figure 4 It is a schematic plan view of the view angle control electrode and the black matrix on the color filter substrate of the liquid crystal display device in the first embodiment of the present invention, Figure 5for image 3 For the cross-sectional diagram along line A-A in , please refer to Figure 3 to Figure 4 The liquid crystal display device includes a color filter substrate 21 , an array substrate 22 disposed opposite to the color filter substrate 21 , and a liquid crystal layer 23 located between the color filter substrate 21 and the array substrate 22 .

[0035] The liquid crystal display device provided in this embodiment is suitable for liquid crystal display devices of In-Plane Switching (IPS) and Fringe Field Switching (FFS) modes, and the common electrode and the pixel electrode are formed on the s...

no. 2 example

[0063] Figure 9 For the waveform diagram of the first AC control voltage applied to the first electrode part and the second AC control voltage applied to the second electrode part in the second embodiment of the present invention, please refer to Figure 9 When the liquid crystal display device is displaying (whether in a wide viewing angle or a narrow viewing angle), the voltage output to the common electrode 225 is a DC common voltage 30 (ie, DCVcom). The difference between this embodiment and the first embodiment is that when applying an AC voltage to the viewing angle control electrode 210, specifically, a periodic first AC control voltage 31 is applied to the first electrode part 211 and the second electrode part 212 respectively. (ie com1) and the second AC control voltage 32 (ie com2), and the potential difference between the first AC control voltage 31, the second AC control voltage 32 and the DC common voltage 30 is equal.

[0064] Specifically in this embodiment, i...

no. 3 example

[0070] Figure 10 It is a schematic diagram of the partial circuit structure of the liquid crystal display device in the third embodiment of the present invention, please refer to Figure 10 The difference between this embodiment and the above-mentioned first embodiment is that, in this embodiment, a pixel electrode 227 is arranged in each pixel unit P, and the pixel electrode 227 is arranged in the first sub-pixel P1 and the second sub-pixel P1 at the same time. The pixel P2 is electrically connected to the scan line 222 and the data line 223 in the pixel unit P through a thin film transistor 224 . For the remaining content of this embodiment, reference may be made to the description of the first embodiment above, and details are not repeated here.

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Abstract

The invention provides a liquid crystal display device. Each pixel unit on an array substrate comprises a first sub-pixel and a second sub-pixel; a visual angle control electrode on a colored film substrate comprises a first electrode part and a second electrode part which are insulated from each other; the first electrode part correspondingly covers one of the first sub-pixel and the second sub-pixel of each pixel unit; the second electrode part correspondingly covers the other one of the first sub-pixel and the second sub-pixel of each pixel unit; and a first alternating-current control voltage and a second alternating-current control voltage are separately applied to the first electrode part and the second electrode part, the polarity of the first alternating-current control voltage isopposite to the polarity of the second alternating-current control voltage, and the potential difference between the first electrode part and a common electrode and the potential difference between the second electrode part and the common electrode are equal or the equivalent potential difference between the first electrode part in two frames of pictures in a period and the common electrode and the equivalent potential difference between the second electrode part in the two frames of pictures in the period are equal. According to the driving framework, by complementarity and phase difference of the two alternating-current voltages, bright difference is generated between the two sub-pixels in each pixel unit to carry out brightness compensation, and thus, the problem of flashing of a panelis solved.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a liquid crystal display device. Background technique [0002] Liquid crystal display (liquid crystal display, LCD) has the advantages of good image quality, small size, light weight, low driving voltage, low power consumption, no radiation and relatively low manufacturing cost, and occupies a dominant position in the field of flat panel display. [0003] Currently, liquid crystal display devices are gradually developing toward wide viewing angles. For example, liquid crystal display devices using in-plane switching mode (IPS) or fringe field switching mode (FFS) can achieve wider viewing angles. The wide viewing angle design allows users to see a complete and undistorted picture from all directions. However, in today's society, people pay more and more attention to protecting their privacy, and there are many things that they don't like to share with others. In ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G02F1/13G02F1/133G02F1/1343G02F1/137
CPCG02F1/1323G02F1/13306G02F1/134309G02F1/137
Inventor钟德镇苏子芳姜丽梅
OwnerKUSN INFOVISION OPTOELECTRONICS