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Liquid crystal display device and driving method

A technology of a liquid crystal display device and a driving method, which is applied to static indicators, instruments, nonlinear optics, etc., can solve the problems of gray scale inversion at large viewing angles, application of large voltages, and contrast reduction, so as to increase contrast and achieve mutual Compensate and improve the effect of display quality

Active Publication Date: 2021-08-17
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 a driving method to solve the problem of the need to apply a large voltage on the viewing angle control electrode and the reduction in contrast when displaying at a narrow viewing angle in the prior art. And the problem of grayscale inversion at large viewing angles

Method used

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

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Embodiment 1

[0036] Such as image 3 , Figure 5 and Figure 6 As shown, a liquid crystal display device provided by Embodiment 1 of the present invention includes: a first substrate 20 , a second substrate 30 opposite to the first substrate 20 , and a liquid crystal between the first substrate 20 and the second substrate 30 Layer 40. The first substrate 20 is a color filter substrate, and the second substrate 30 is a thin film transistor array substrate. The liquid crystal layer 40 uses positive liquid crystal molecules, that is, liquid crystal molecules with positive dielectric anisotropy. Figure 5 It is a schematic diagram of the cross-sectional structure of the liquid crystal display device at M-M in FIG. 3 at a wide viewing angle in this embodiment. At this time, the liquid crystal is parallel to the two substrates. Figure 6 For liquid crystal display devices at narrow viewing angles image 3 The schematic diagram of the cross-sectional structure at M-M in the middle, at this t...

Embodiment 2

[0054] Such as Figure 4 As shown, a liquid crystal display device and a driving method provided in Embodiment 2 of the present invention are the same as Embodiment 1 ( image 3 ) in the liquid crystal display device and the driving method are basically the same, the difference is that in this embodiment, each auxiliary electrode strip 34 corresponds to the second area A2 covering all sub-pixels SP in each column, and the plurality of auxiliary electrode strips 34 Extending along the direction of the data line 2 , each pixel electrode 33 of the comb structure is perpendicular to the direction of the auxiliary electrode strip 34 . An auxiliary electrode strip 34 is provided between every two adjacent data lines 2, and in each sub-pixel SP, the first area A1 is located on the right side of the second area A2, and the thin film transistor 3 is correspondingly located in the second area the right side of A2, and connect the pixel electrode 33 to the corresponding scan line 1 and ...

Embodiment 3

[0057] Such as Figure 7 , Figure 9 and Figure 10 As shown, a liquid crystal display device and a driving method provided by Embodiment 3 of the present invention are the same as Embodiment 1 ( image 3 ) in the liquid crystal display device and driving method are basically the same, the difference is that, in this embodiment, the common electrode 31 includes a plurality of common electrode strips 31a that are conductively connected (for example, can be conductively connected in the non-display area), and a plurality of Auxiliary electrode strips 34 and a plurality of common electrode strips 31a extend along the scanning line 1 direction, an auxiliary electrode strip 34 and a common electrode strip 31a are arranged between every two adjacent scanning lines 1, and the plurality of auxiliary electrode strips 34 and A plurality of common electrode strips 31a are located on the same layer and arranged alternately, wherein each common electrode strip 31a corresponds to the seco...

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Abstract

The invention discloses a liquid crystal display device and a driving method, comprising a first substrate, a second substrate opposite to the first substrate, and a liquid crystal layer located between the first substrate and the second substrate, the first substrate is provided with a viewing angle The control electrode is provided with a common electrode on the second substrate, and a plurality of sub-pixels are formed on the second substrate by intersections of a plurality of scanning lines and a plurality of data lines, and each sub-pixel is provided with a thin film transistor and a pixel electrode, and each sub-pixel has a first The first area and the second area, each pixel electrode is correspondingly arranged in the first area of ​​each sub-pixel, and a plurality of auxiliary electrode strips are also arranged on the second substrate, and each auxiliary electrode strip corresponds to cover all In the second area of ​​the sub-pixel, through the synergistic effect of a plurality of auxiliary electrode strips and the viewing angle control electrode, the voltage applied to the viewing angle control electrode of the liquid crystal display device at a narrow viewing angle is reduced, the contrast is increased, and the gray scale reflection of the large viewing angle is at the same time Turning has also improved.

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. 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] With the continuous advancement of liquid crystal display technology, the viewing angle of the display has been expanded from about 120° to more than 140°. 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 a wide viewing angle, it is also required that the display device can be swit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13G02F1/1343G09G3/36
CPCG02F1/1323G02F1/134309G09G3/3648
Inventor 周学芹沈家军张军贺嘉伟
Owner KUSN INFOVISION OPTOELECTRONICS
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