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Image display device and image display method

一种图像显示装置、显示部的技术，应用在静态指示器、仪器等方向，能够解决场序彩色方式色乱等问题

Inactive Publication Date: 2013-09-18
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the field sequential color method has the problem of color break

Method used

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  • Image display device and image display method
  • Image display device and image display method
  • Image display device and image display method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach ＞

[0103]

[0104] figure 1 It is a block diagram showing the overall configuration of the liquid crystal display device according to the first embodiment of the present invention. This liquid crystal display device includes a display unit 100 , a backlight unit 200 , a panel drive circuit 300 and a sub-frame image generation unit 400 . The sub-frame image generation unit 400 includes a frame rate conversion unit 42 , a video signal generation unit 44 , and an image analysis unit 46 . The image analysis unit 46 includes a color breakup intensity calculation unit 462 and a light source control signal generation output unit (light source control unit) 464 . The backlight unit 200 includes LEDs of three colors, red (R), green (G), and blue (B), as a backlight (light source unit), and a program that controls the states (on state / off state) of these LEDs. LED control circuit. In addition, generally, a plurality of LEDs of each color are provided.

[0105] A plurality of source ...

no. 2 Embodiment approach ＞

[0160]

[0161] The configuration of the liquid crystal display device and the configuration of one frame period are the same as those of the above-mentioned first embodiment, so descriptions thereof are omitted (see figure 1 and figure 2 ). In addition, the calculation method of the first pixel area, the calculation method of the second pixel area, and the calculation method of the color break-up intensity are the same as those of the above-mentioned first embodiment, so description thereof will be omitted.

[0162] In the present embodiment, the light source control signal generating and outputting unit 464 operates as Such as Figure 20 As shown, the light source control signal S is output so that the LEDs of all colors are turned off in the extended subframe.

[0163]

[0164] According to the present embodiment, when displaying an image whose color breakup is difficult to be visually recognized, all the LEDs are turned off in the extended subframe. Therefore, th...

no. 3 Embodiment approach ＞

[0170]

[0171] In each of the above embodiments, only one extended subframe is provided in one frame period. However, depending on the target image, it is considered that visual recognition of multiple mixed color components may be disturbed. For example, sometimes Figure 22 As shown, in the target image, there are a region Z1a containing many yellow components and a region Z1b containing many cyan components. In such a case, even if yellow display is performed in (only one of which is provided in one frame period), color breakup due to the cyan component occurs. Therefore, in this embodiment, if Figure 23 As shown in , there are two extended subframes (the first extended subframe and the second extended subframe) in one frame period. In addition, since the configuration of the liquid crystal display device is the same as that of the above-mentioned first embodiment, description thereof will be omitted (see figure 1 ).

[0172]

[0173] How to set the states of th...

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Abstract

Disclosed is an image display device using the field sequential method and capable of more efficiently suppressing occurrence of color breakup. One frame period is configured from single-color lighting subframes and an extended subframe in which a multicolor light source can assume arbitrary states. A color breakup intensity calculation unit (462) calculates for each mixed color component a color breakup intensity representing susceptibility to color breakup. A light source control signal generation / output unit (464) controls the light sources such that the greater the color breakup intensity of the mixed color component with the greatest color breakup intensity, the greater the amount of said mixed-color component is included in the light emitted from a light source unit in the extended subframe. Here, when an arbitrary mixed color component is set as a target component, if there is a first pixel region to be displayed which contains the target component, then the greater the size of the target component in the first pixel region, the greater the color breakup intensity for that target component.

Description

technical field [0001] The present invention relates to an image display device and an image display method, and more specifically, to a technique for suppressing occurrence of color breakup in an image display device using a field sequential method. Background technique [0002] Many liquid crystal display devices that perform color display include color filters that transmit red (R), green (G), and blue (B) light for each sub-pixel obtained by dividing one pixel into three. However, about 2 / 3 of the light irradiated to the backlight of the liquid crystal panel is absorbed by the color filter, so the liquid crystal display device of the color filter method has a problem of low light utilization efficiency. Therefore, a field sequential liquid crystal display device that performs color display without using a color filter has attracted attention. [0003] In the field sequential method, a display period of one screen (one frame period) is divided into three subframes. In a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G02F1/133G09G3/20G09G3/34
CPCG09G3/3648G09G2310/0235G09G2320/0242G09G2320/064G09G3/3607
Inventor 石原朋幸
Owner SHARP KK
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