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Image display device

A technology of an image display device and a display unit, which can be applied to static indicators, instruments, etc., and can solve the problems of color disorder and display quality degradation.

Inactive Publication Date: 2012-10-17
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the above-mentioned field sequential method, one frame is simply divided into three sub-frames corresponding to the image signals of the RGB colors, so there arises a problem that, depending on the image, proper color mixing of RGB in one frame is not performed, Color breakup (color break: CB) occurs, which degrades the display quality

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Embodiment Construction

[0043] Next, embodiments of the present invention will be described in detail.

[0044]

[0045] figure 1 A schematic block diagram of a case where the image display device of the present invention is applied to a liquid crystal display device is shown.

[0046] Such as figure 1 As shown, the liquid crystal display device 101 includes: a liquid crystal panel (display unit) 1, whose display area includes a plurality of pixels with light transmission; A plurality of light sources of color light; source driver 3; gate driver 4; backlight data processing unit 5; video signal input unit 6; LUT7 (Look-Up Table: look-up table); RGB signal processing unit 8; color signal Correction section 9 ; subframe generation section 10 ; data delay processing section 11 ; and driver control section 12 .

[0047] The above-mentioned liquid crystal display device 101 performs color image display by the field sequential method, and also performs area-active drive control in which light source...

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Abstract

Disclosed is an image display device provided with a sub-frame generation section (10) which divides one frame of an image signal into a first sub-frame in which at least a green (G) light source emits light, a second sub-frame in which at least a red (R) light source emits light, and a third sub-frame in which a blue (B) light source emits light. The sub-frame generation section (10) determines the difference between a red (R) image signal included in the first sub-frame and a display signal obtained from the aperture ratio corrected in the first sub-frame and the brightness distribution of a light source corresponding to the red (R) image signal included in the first sub-frame, and corrects the aperture ratio corrected in the second sub-frame in accordance with the difference of the display signal determined in the first sub-frame. The correct color can therefore be displayed with sufficient brightness.

Description

technical field [0001] The present invention relates to an image display device capable of color display, in particular to an image display device capable of color display using a field sequential method. Background technique [0002] In general, color displays such as television receivers and personal computer monitors, which are image display devices capable of color display, often use three primary colors of red, green, and blue to express images by a color mixing method called additive color mixing. [0003] A current general color display performs color display using color filters colored R (red), G (green), and B (blue). [0004] On the other hand, color displays that perform color display without using color filters have also been proposed. For example, there is a field sequential color display in which red, green, and blue backlights sequentially emit light. As such a field sequential color display, there is a liquid crystal display device disclosed in Patent Docum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G02F1/133G09G3/20G09G3/34
CPCG09G2330/08G09G2310/0235G09G2360/16G09G2320/0242G09G2320/064G09G3/3426G09G2320/0666G09G2320/0276G09G2320/0646G09G2360/144G09G3/3611G09G3/3413
Inventor 后藤俊之
Owner SHARP KK