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Liquid crystal display device with switchable viewing angle and driving method

A technology of liquid crystal display device and viewing angle, which is applied in static indicators, instruments, nonlinear optics, etc., can solve the problem of uneven display of image quality, and achieve the effect of improving display image quality

Active Publication Date: 2022-05-13
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 with switchable viewing angle and a driving method, which can realize switching between wide and narrow viewing angles in different occasions, and improve the Mura problem of uneven image quality display under narrow viewing angles, effectively improving the display quality

Method used

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  • Liquid crystal display device with switchable viewing angle and driving method
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  • Liquid crystal display device with switchable viewing angle and driving method

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no. 1 example

[0031] Please also refer to Figure 1 to Figure 3 The liquid crystal display device with switchable viewing angle provided by the first embodiment of the present invention includes a display panel 20, and the display panel 20 includes a first substrate 21, a second substrate 22 opposite to the first substrate 21, and a The liquid crystal layer 23 between the second substrates 22 . Wherein, the first substrate 21 may be a color filter substrate, and the second substrate 22 may be a thin film transistor array substrate.

[0032] The first substrate 21 is provided with a color resist layer 211 , a black matrix 212 , a flat layer 213 and a viewing angle control electrode 214 on a side facing the liquid crystal layer 23 in the display area. In this embodiment, the color resistance layer 211 and the black matrix 212 are disposed on the surface of the first substrate 21 facing the liquid crystal layer 23, the flat layer 213 is disposed on the color resistance layer 211 and the black...

no. 2 example

[0066] Please refer to Figure 7 The main difference between the liquid crystal display device with switchable viewing angle provided by the second embodiment of the present invention and the above-mentioned first embodiment is that in this embodiment, the viewing angle control electrode strips 214a located in the odd rows and the viewing angle control electrode strips 214a located in the even rows 214a are located in different layers with an insulating flat layer 215 sandwiched between them, that is, two adjacent viewing angle control electrode strips 214a are arranged in layers.

[0067] Further, in a direction perpendicular to the first substrate 21 , two adjacent viewing angle control electrode strips 214 a are connected or overlapped at edge positions.

[0068] In the first embodiment, when the viewing angle control electrode strips 214a are arranged on the same layer, a slit 214b needs to be made between two adjacent viewing angle control electrode strips 214a to separat...

no. 3 example

[0074] Please refer to Figure 8 to Figure 9 The main difference between the liquid crystal display device with switchable viewing angle provided by the fourth embodiment of the present invention and the above-mentioned first embodiment is that in this embodiment, the liquid crystal layer 23 adopts negative liquid crystal, and in the initial state (that is, the display panel 20 is not applied Under the condition of any voltage), the negative liquid crystal in the liquid crystal layer 23 has a larger initial pretilt angle relative to the substrate, that is, the negative liquid crystal is in an inclined posture relative to the substrate (such as Figure 8 ). The initial pretilt angle of the negative liquid crystal in the liquid crystal layer 23 relative to the substrate can be selected between 30°-60°.

[0075] Such as Figure 8 As shown, when there is no voltage difference between the viewing angle control electrode 214 and the common electrode 224 (the voltage difference is ...

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Abstract

A liquid crystal display device with switchable viewing angle, the first substrate of the display panel is provided with a viewing angle control electrode including a plurality of viewing angle control electrode strips, and the second substrate is provided with an integrated scanning drive circuit, including a first voltage line, a second Two voltage lines, a clock signal line group, a plurality of gate drive circuit units and a plurality of switch control units; the clock signal line group includes at least four clock signal lines, and each scanning line is connected to a gate drive circuit unit and a switch control unit , each gate drive circuit unit is respectively connected to three clock signal lines in the clock signal line group; each switch control unit is respectively connected to the first voltage line, the second voltage line, and two of the clock signal line groups Clock signal line; each switch control unit is also connected to the viewing angle control electrode strip above the row sub-pixel connected to the scanning line; the switch control unit is used to output the first viewing angle control voltage and the second viewing angle control electrode strip to two adjacent viewing angle control electrode strips Viewing angle control voltage.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a liquid crystal display device and a driving method with a switchable viewing angle. Background technique [0002] Liquid crystal display (liquid crystal dilay, 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 (IPS) or fringe field switching (FFS) modes can achieve wider viewing angles. While enjoying the visual experience brought by squinting, people also hope to effectively protect commercial secrets and personal privacy, and avoid commercial loss or embarrassment caused by leakage of screen information. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1362G02F1/133G02F1/13G02F1/1343
CPCG02F1/136286G02F1/13306G02F1/1323G02F1/134309
Inventor 苏子芳荣誉东
Owner KUSN INFOVISION OPTOELECTRONICS
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