Liquid crystal display device and drive 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 affecting the anti-peeping effect of narrow viewing angles, reducing the picture quality, etc., and achieve the effect of improving the problem of gray scale inversion

Active Publication Date: 2018-12-07
KUSN INFOVISION OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] However, when the liquid crystal display device is switched to a narrow viewing angle, the problem of gray scale inversion is likely to occur at a large viewing angle, especially in a picture with a large contrast, the problem of gray scale inversion is more serious, which will greatly reduce the problem of gray scale inversion at a narrow viewing angle. picture quality, and affect the anti-peep effect of narrow viewing angle

Method used

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

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no. 1 example

[0024] figure 1 is a schematic structural diagram of a liquid crystal display device according to the first embodiment of the present invention; figure 2 for figure 1 A schematic plan view of the viewing angle control electrode of the shown liquid crystal display device; image 3 for figure 1 A schematic structural diagram of a pixel unit of the shown liquid crystal display device; Figure 4 for figure 1 A schematic structural diagram of a light-shielding structure corresponding to one pixel unit of the liquid crystal display device shown. Such as figure 1 and figure 2 As shown, the liquid crystal display device of the first embodiment of the present invention includes a first substrate 10, a second substrate 30 opposite to the first substrate 10, and a liquid crystal layer between the first substrate 10 and the second substrate 30. 50. The first substrate 10 is provided with a color-resist layer 12, a viewing angle control electrode 14, and a protective layer 16. Th...

no. 2 example

[0035] Figure 5 It is a schematic structural diagram of a liquid crystal display device according to the second embodiment of the present invention. Such as Figure 5 As shown, the liquid crystal display device of the second embodiment of the present invention is basically similar to the liquid crystal display device of the first embodiment, the difference is that the viewing angle control electrode 14 of the liquid crystal display device of the second embodiment includes first electrode parts insulated from each other 142. The second electrode part 144 and the third electrode part 150. Each pixel unit P includes a first region P1, a second region P2 and a third region P3. The first electrode part 142 corresponds to the first electrode part covering all the pixel units P. In the area P1, the second electrode portion 144 corresponds to the second area P2 covering all the pixel units P, and the third electrode portion 150 corresponds to the third area P3 covering all the pixel...

no. 3 example

[0039] The present invention also provides a driving method for the above-mentioned liquid crystal display device, comprising:

[0040] In the wide viewing angle mode, no voltage signal is applied to the first electrode part 142 and the second electrode part 144 . At this time, only the horizontal electric field between the pixel electrode 36 and the common electrode 32 drives the liquid crystal to deflect, and drives each pixel unit P to perform normal display. It can be understood that a voltage signal having a small voltage difference with the common electrode 32 can also be applied to the first electrode part 142 and the second electrode part 144, because the first electrode part 142 and the second electrode part 144 are connected to the common electrode The voltage difference between 32 is small, so there is no vertical electric field or the vertical electric field is very small, and the liquid crystal molecules will not be lifted.

[0041] In the narrow viewing angle mo...

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Abstract

The invention discloses a liquid crystal display device and a drive method thereof. The liquid crystal display device includes a first substrate, a second substrate and a liquid crystal layer, a visual angle control electrode is arranged on the first substrate, a public electrode and pixel electrodes are arranged on the second substrate, a plurality of pixel units are defined on the second substrate by scanning lines and data lines, each pixel unit includes a first area and a second area, the visual angle control electrode includes a first electrode part and a second electrode part which are insulated with each other, the first electrode part correspondingly covers the first area, and the second electrode part correspondingly covers the second area. By adopting the liquid crystal display device and the drive method thereof, when display is conducted in a narrow visual field mode, different first voltage signals and second voltage signals can be applied to the first electrode part and the second electrode part, perpendicular electric fields with different intensities are formed at the corresponding positions of the first and second areas, therefore, the liquid crystal standing angles at different positions are different, and when large visual angle viewing is conducted, visual angles of different areas are complementary so that the problem of gray scale inversion can be improved.

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 devices have the advantages of good image quality, small size, light weight, low driving voltage, low power consumption, no radiation, and relatively low manufacturing costs, and occupy a dominant position in the field of flat panel displays. [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. In order to avoid commercial loss or embarrassment caused by leakage of screen information. Therefore, in addition to the wide viewing angle, the display device is also required to have the function...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1343G02F1/13G02F1/133
CPCG02F1/1323G02F1/13306G02F1/134309
Inventor 房耸井晓静荣誉东
Owner KUSN INFOVISION OPTOELECTRONICS
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