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Liquid crystal display device and method for driving liquid crystal display device

A liquid crystal display device and liquid crystal layer technology, applied in static indicators, nonlinear optics, optics, etc., can solve the problem of not being able to fully suppress the degradation of gamma characteristics

Inactive Publication Date: 2017-05-17
SAKAI DISPLAY PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, for example, when the angle formed by the normal line at the edge of the display screen and the viewer's line of sight is relatively large, there will be a problem that the deterioration of the gamma characteristic cannot be sufficiently suppressed as the position of the observation object on the display screen is closer to the edge.

Method used

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

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Experimental program
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no. 1 approach

[0080] figure 1 It is a block diagram showing a configuration example of the liquid crystal display device according to the first embodiment of the present invention. figure 2 It is an explanatory diagram schematically showing a structure in which pixels are divided and formed in the liquid crystal panel 100a according to the first embodiment of the present invention. figure 1The illustrated liquid crystal display device has a liquid crystal panel 100a. In the liquid crystal panel 100a, pixels P formed by dividing and forming a plurality of electrode pairs described later are formed in a matrix in the vertical direction and the horizontal direction of the display screen. arrangement. The display screen of the liquid crystal panel 100a is curved so as to protrude forward. The liquid crystal panel 100 a is illustrated centering on a representative pixel P and each signal line related to the pixel P. As shown in FIG.

[0081] exist figure 2 Among them, the pixel P includes ...

no. 2 approach

[0131] In the first embodiment, the amplitudes of the signals CSS1 and CSS2 respectively applied to the storage capacitor signal lines CS1 and CS2 are fixed at Vcs. In contrast, in the second embodiment, the amplitudes of the signals CSS1 and CSS2 are made Varies depending on the position of P.

[0132] Figure 7 It is a block diagram showing a configuration example of a liquid crystal display device according to a second embodiment of the present invention. Liquid crystal display device according to the second embodiment The liquid crystal display device has a liquid crystal panel 100b in which pixels P are arranged in a matrix in the vertical direction and the horizontal direction of the display screen. The display screen of the liquid crystal panel 100b is curved so as to protrude forward. In the drawing, a liquid crystal panel 100 b is shown centering on representative three pixels P and respective signal lines related to the pixels P. As shown in FIG. Hereinafter, the ...

no. 3 approach

[0152] In the first embodiment, different voltage signals are applied to the auxiliary capacitance signal lines CS1 and CS2 to cause a voltage difference between the voltages of the sub-pixel electrodes 11a and 11b. In contrast, in the third embodiment, each The two source signal lines SL1 and SL2 arranged for each pixel P apply source signals having different voltages to the sub-pixel electrodes 11 a and 11 b. Either way, it is possible to generate a voltage difference between the voltages applied to the liquid crystal layer 3 through the sub-pixels SP1 and SP2 .

[0153] Figure 12 is a block diagram showing a configuration example of a liquid crystal display device according to a third embodiment of the present invention, Figure 13 It is an explanatory diagram schematically showing a structure in which pixels P are divided and formed in a liquid crystal panel 100c according to the third embodiment of the present invention. Figure 12 The illustrated liquid crystal displa...

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Abstract

Provided are a liquid crystal display device and a method for driving a liquid crystal display device capable of effectively suppressing the deterioration in gamma characteristics even when an angle between a normal line to a display screen from a position of observation and an observer's line of sight is relatively large. Pixels P, arranged in a matrix, are defined to include a plurality of pairs of electrodes for applying a voltage to a liquid crystal layer. Each of two subpixels included in each pixel P is defined to include a pair of electrodes consisting of a subpixel electrode and a counter electrode. A pair of electrodes in each of the two subpixels included in the pixel P (including a pair of electrodes in a third subpixel which may also be included in the pixel P) applies a voltage to the crystal liquid layer. A voltage difference between any two voltages applied to the crystal liquid layer is set to vary in accordance with the arrangement position of the pixel P along the rows and / or columns of the matrix.

Description

technical field [0001] The present invention relates to a liquid crystal display device, in particular to a liquid crystal display device capable of improving the viewing angle dependence of gamma characteristics and a driving method of the liquid crystal display device. Background technique [0002] The liquid crystal display device is a flat display device with excellent characteristics such as high definition, thin profile, light weight, and low power consumption, and is widely used in thin TVs, personal computer monitors, digital signage, and the like. [0003] Conventionally, TN (Twisted Nematic: Twisted Nematic) mode liquid crystal display devices generally used are excellent in productivity, but have problems in viewing angle characteristics related to screen display. For example, when the display screen is viewed from a direction oblique to the normal, in the TN mode liquid crystal display device, the contrast ratio is significantly lowered, and the brightness differ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/133G02F1/1368G09G3/36
CPCG09G3/3607G09G3/3648G09G2320/0261G09G2320/0285G09G2354/00G09G2360/16G09G3/03G02F1/0123G02F1/133514G02F1/133528G02F1/1337G02F1/137
Inventor 入江健太郎北山雅江
Owner SAKAI DISPLAY PROD