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Driving method of liquid crystal display device

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 affecting the anti-peep effect and reducing the taste of the anti-peep mode, so as to improve the anti-peep angle range and anti-peep effect Good, slight effect of grayscale inversion

Active Publication Date: 2022-04-22
KUSN INFOVISION OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Many liquid crystal display devices with mixed viewing angles that have been disclosed so far have the problem of grayscale inversion under large viewing angles in the anti-peeping mode, especially in images with relatively high contrast (such as black and white tone text interfaces), due to the existence of grayscale inversion , the anti-peep effect will be affected by grayscale inversion at large viewing angles, which will reduce the taste of the anti-peep mode, and even affect the anti-peep effect (the content can still be recognized after the grayscale inversion)

Method used

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  • Driving method of liquid crystal display device
  • Driving method of liquid crystal display device
  • Driving method of liquid crystal display device

Examples

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no. 1 example

[0031] Please refer to Figure 3 to Figure 4 The liquid crystal display device provided by the embodiment of the present invention includes a display panel 50 including a lower substrate 20 , an upper substrate 30 opposite to the lower substrate 20 , and a liquid crystal layer 40 between the lower substrate 20 and the upper substrate 30 . Wherein, the lower substrate 20 may be a thin film transistor array substrate (ie, an array substrate), and the upper substrate 30 may be a color filter substrate (ie, a color filter substrate).

[0032]The lower substrate 20 is provided with scan lines 21 , data lines 22 , thin film transistors, pixel electrodes and common electrodes 23 on a side facing the liquid crystal layer 40 . The lower substrate 20 is defined by a plurality of scanning lines 21 and a plurality of data lines 22 insulated from each other to form a plurality of pixel units P arranged in an array; wherein, two data lines 22 are arranged between every two adjacent columns ...

no. 2 example

[0064] Please refer to Figure 7 The difference between the liquid crystal display device provided by the second embodiment of the present invention and the above-mentioned first embodiment is that the first pixel part 24 and the second pixel part 25 in each pixel unit P are respectively located at the upper and lower sides of the pixel unit P. side. That is, the first pixel portion 24 and the second pixel portion 25 are arranged side by side along the direction of the data line 22, wherein the first pixel portion 24 is close to the scanning line 21 on the upper side of the pixel unit P, and the second pixel portion 25 is close to the pixel unit P The scan line 21 on the lower side.

[0065] For the driving method of the liquid crystal display device according to the embodiment of the present invention, refer to the first embodiment above, and details will not be repeated here.

no. 3 example

[0067] Please refer to Figure 8 The difference between the liquid crystal display device provided by the third embodiment of the present invention and the above-mentioned first embodiment is that the first pixel part 24 and the second pixel part 25 in each pixel unit P are respectively located at the upper and lower sides of the pixel unit P. side, and a scan line 21 is provided between the first pixel portion 24 and the second pixel portion 25 of each row of pixel units P. Wherein, the first thin film transistor 26 in each pixel unit P is connected to the data line 22 on the left side of the pixel unit and the scanning line 21 between the first pixel part 24 and the second pixel part 25, and each pixel unit P The second thin film transistor 27 is connected to the data line 22 on the right side of the pixel unit and the scan line 21 between the first pixel part 24 and the second pixel part 25 .

[0068] For the driving method of the liquid crystal display device according to...

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Abstract

The driving method of the liquid crystal display device includes: in the wide viewing angle mode, applying a DC common voltage to the common electrode, applying a viewing angle control voltage to the viewing angle control electrode, so that the voltage difference between the viewing angle control electrode and the common electrode is smaller than a preset value, and applying the DC common voltage to the viewing angle control electrode. The first pixel part and the second pixel part of the pixel electrode output voltages with the same polarity and equal level; in the narrow viewing angle mode, a DC common voltage is applied to the common electrode, and a viewing angle control voltage is applied to the viewing angle control electrode, so that the viewing angle control electrode The voltage difference between the common electrode and the common electrode is greater than the preset value, and when the grayscale display is greater than 0, the first pixel voltage is output to the first pixel part of the pixel electrode, and the second pixel voltage is output to the second pixel part of the pixel electrode, wherein , the first pixel voltage and the second pixel voltage have the same polarity and different voltage levels. When the liquid crystal display device is in the narrow viewing angle mode, the degree of gray scale inversion is slight, and the anti-peeping effect is good.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a driving method of 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] The current liquid crystal display is gradually developing in the direction of wide viewing angle, whether it is a mobile terminal application, a desktop monitor or a notebook computer. Function. Therefore, in addition to the demand for a wide viewing angle, displays that can be switched or adjusted to a narrow viewing angle mode are gradually developed in situations where anti-peeping is required. The display has a hybrid viewing angle (Hybird Viewing Angle, HVA), which can realize switching...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13G02F1/133G02F1/1362G09G3/36
CPCG02F1/13306G02F1/1323G02F1/136286G09G3/3614G09G3/3696
Inventor 姜丽梅李冬敏
Owner KUSN INFOVISION OPTOELECTRONICS