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Liquid crystal display apparatus

A technology of liquid crystal display devices and thin film transistors, which can be used in static indicators, nonlinear optics, instruments, etc., and can solve problems such as grayscale inversion

Inactive Publication Date: 2014-07-16
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in a VA mode liquid crystal display device, grayscale inversion may occur when viewed from an oblique direction.

Method used

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  • Liquid crystal display apparatus
  • Liquid crystal display apparatus
  • Liquid crystal display apparatus

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Experimental program
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Embodiment approach 1

[0084] Next, a first embodiment of the liquid crystal display device of the present invention will be described. figure 1 A schematic diagram of the liquid crystal display device 100 of this embodiment is shown. The liquid crystal display device 100 includes: a back substrate 120 having pixel electrodes 124 and an alignment film 126 provided on an insulating substrate 122; a front substrate 140 having a counter electrode 144 and an alignment film 146 provided on an insulating substrate 142; and a liquid crystal The layer 160 is provided between the back substrate 120 and the front substrate 140.

[0085] Polarizing plates 128, 148 and retardation plates 129, 149 are provided on the back substrate 120 and the front substrate 140, respectively. The two polarizing plates 128, 148 are arranged to face each other with the liquid crystal layer 160 interposed therebetween. The transmission axes (polarization axes) of the two polarizing plates 128, 148 are arranged orthogonal to each ot...

Embodiment approach 2

[0259] In the above description, the bright sub-pixels and the dark sub-pixels are arranged in a grid pattern, but the present invention is not limited to this.

[0260] Below, refer to Picture 20 The second embodiment of the liquid crystal display device of the present invention will be described. The liquid crystal display device 100D of this embodiment has the same configuration as the above-mentioned liquid crystal display device except that two regions of dark sub-pixels are provided with bright sub-pixels interposed therebetween. To avoid cumbersomeness, redundant descriptions are omitted.

[0261] Picture 20 A schematic plan view of the back substrate 120 in the liquid crystal display device 100D is shown. In the liquid crystal display device 100D, the gate wiring G and the source wiring S are also arranged in a matrix, and the storage capacitor wiring CS is arranged in parallel with the gate wiring G. In addition, the storage capacitor wiring CS is provided so as to corr...

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PUM

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Abstract

An object of the present invention is to provide a liquid crystal display device that suppresses color shift when viewed from an oblique direction. A liquid crystal display device (100) of the present invention includes a plurality of pixels including red pixels (Ra, Rb), green pixels (Ga, Gb) and blue pixels (Ba, Bb). Each of the plurality of pixels has a plurality of sub-pixels, and the plurality of sub-pixels include a first sub-pixel (124a) and a second sub-pixel (124b). A TFT (130u) and a correction storage capacitor (132u) are provided corresponding to the dark sub-pixel (Bb) of the blue pixel, whereby the gray scale of the input signal corresponding to the red pixel, the green pixel, and the blue pixel is at a certain level. When the levels are equal to each other, the ratio of the difference between the luminance of the first subpixel and the luminance of the second subpixel with respect to the highest luminance in one of the red pixel, green pixel, and blue pixel is greater than that of the other two pixels The ratio of the difference between the brightness of the first sub-pixel and the brightness of the second sub-pixel relative to the highest brightness.

Description

Technical field [0001] The present invention relates to a liquid crystal display device. Background technique [0002] The liquid crystal display device is used not only as a large television but also as a small display device such as a display unit of a mobile phone. The conventionally used TN (Twisted Nematic: twisted nematic) mode liquid crystal display device has a relatively narrow viewing angle, but in recent years, IPS (In-Plane-Switching: plane control) mode and VA (Vertical Alignment) have been produced. ) Mode of wide viewing angle liquid crystal display device. Even in such a wide viewing angle mode, the VA mode can achieve a high contrast ratio, so it is used in many liquid crystal display devices. [0003] However, in the VA mode liquid crystal display device, grayscale inversion may sometimes occur when viewed from an oblique direction. In order to suppress grayscale inversion, an MVA (Multi-domain Vertical Alignment) mode in which a plurality of liquid crystal dom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G02F1/133G02F1/1368G09G3/20
CPCG02F2001/134345G09G3/3655G09G2300/0852G09G2320/028G02F1/13624G09G2300/0842G09G2320/0242G09G2300/0447G09G2300/0443G09G3/3614G09G2300/0452G09G3/3659G02F1/136213G09G2300/0426G09G3/3648G02F1/134345G09G3/3607
Inventor 盐见诚
Owner SHARP KK