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Color filter, color image display device, and electronic apparatus

A color image and display device technology, applied to static indicators, cathode ray tube indicators, optics, etc., can solve the problems of different color reproducibility

Active Publication Date: 2008-03-12
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the same source image is displayed on a display device and printed by a printer, the color reproducibility is different, and the color matching between the display device and the printer is insufficient.

Method used

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  • Color filter, color image display device, and electronic apparatus
  • Color filter, color image display device, and electronic apparatus
  • Color filter, color image display device, and electronic apparatus

Examples

Experimental program
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no. 1 Embodiment

[0059] Next, a first embodiment of a display device to which the above-mentioned 6-color filter is applied will be described. FIG. 4 shows a configuration example of the display device 10 of the first embodiment. This display device 10 can be used in mobile terminals such as mobile phones and PDAs. In FIG. 4 , a display device 10 of the present embodiment has a color calculation unit 12 and a liquid crystal display panel 14 . The liquid crystal display panel 14 has a liquid crystal display device 18 and a driver 16 .

[0060] To the display device 10 , an RGB signal 20 is input from the outside. The RGB signal 20 includes an R signal Sr, a G signal Sg, and a B signal Sb. The color calculation unit 12 generates six-color signals 22 from the input RGB signals 20. The six-color signals 22 are signals corresponding to the respective color signals of R, G, B, YL, M, and C, and are supplied to drivers in the liquid crystal display panel 14. 16.

[0061] The liquid crystal displ...

no. 2 Embodiment

[0080]Next, a second embodiment of the display device will be described. FIG. 6 shows the configuration of a display device 10a of the second embodiment. In the display device 10 shown in FIG. 4 , RGB signals 20 are input, and six-color signals are generated based on them, and an image is displayed on a liquid crystal display panel 14 equipped with six-color color filters. In this modified example, the display device 10 a is also configured to be able to input the YMC signal 24 . That is, when the source image is input as the RGB signal 20 , six color signals are generated from the RGB signal 20 and supplied to the liquid crystal display panel 14 similarly to the display device 10 . In addition, when the source image is input as the YMC signal 24 , the color calculation unit 12 a generates a six-color signal 26 from the YMC signal 24 and supplies it to the liquid crystal display panel 14 .

[0081] When the YMC signal 24 is input, the color calculation unit 12a performs colo...

no. 3 Embodiment

[0085] Next, a third embodiment of the display device will be described. FIG. 8 shows the configuration of a display device 10b of the third embodiment. As shown in the figure, the display device 10b of the third embodiment receives an RGB signal 20 as an input signal similarly to the display device 10 of the first embodiment. However, in the third embodiment, the color computing unit 12b generates and outputs six-color signals 28 by a method different from that in the first embodiment.

[0086] As mentioned above, the advantage of the 6-color color filter of the present invention is that it has a wider color reproduction area for color image signals than the usual RGB-only color filter. Pixels constitute one color pixel, which causes a decrease in resolution, but for black and white images, the above-mentioned six-color arrangement can compensate for the decrease in resolution.

[0087] In the third embodiment, using this feature, it is judged whether the input image is a m...

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Abstract

The present invention provides a color image display device which improves color reappearance performance by a color filter consisting of RGB and YMC6. The invention comprises a display faceplate with the color filter which forms one pixel area with red, green, blue, yellow, fuchsin and cyan color filter areas, a color calculating part which generates a six-color signal comprising red, green, blue, yellow, fuchsin and cyan signals based on a RGB signal input from outside and a control part which controls the display of each color filter area of the display faceplate based on the six-color signal and displays an image corresponding to the RGB signal at the display faceplate. Except the red, green and blue color filter areas, the present invention is also provided with the yellow, fuchsin and cyan color filter areas, and one pixel area is formed by the areas, which can enlarge the color display range. Besides, even if an input image datum is the RGB signal, the yellow, fuchsin and cyan signals can also be generated and are displayed by the six-color signal, and the general RGB signal can also be used.

Description

technical field [0001] The present invention relates to the technical category of electro-optical devices such as liquid crystal devices and electronic equipment. In addition, the present invention also relates to technical categories such as electrophoretic devices such as electronic paper and EL (electroluminescent) devices. Background technique [0002] In recent years, color image display devices such as color liquid crystal display devices have been used in portable terminal devices such as mobile phones and PDAs. For example, in the case of a liquid crystal display device, it is possible to display colors by providing a color filter on one of a pair of transparent substrates sandwiching liquid crystals. A general color filter is constituted by repeatedly arranging three color filter regions of red (R), green (G), and blue (B) according to the additive color mixing system. That is, a red color filter region, a green color filter region, and a blue color filter region ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/133G02B5/23G09G3/36
CPCG02F1/133514G09G3/2003G09G5/026
Inventor 胡桃泽孝
Owner BOE TECH GRP CO LTD
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