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Field-sequential color type liquid crystal display apparatus and color display method therefor

A liquid crystal display device, field sequential color technology, used in static indicators, nonlinear optics, instruments, etc.

Inactive Publication Date: 2012-02-15
AOMORI SUPPORT CENT FOR INDAL PROMOTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As we all know, the biggest difficulty of FSC-LCD is that it will produce "color breakup"

Method used

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  • Field-sequential color type liquid crystal display apparatus and color display method therefor
  • Field-sequential color type liquid crystal display apparatus and color display method therefor
  • Field-sequential color type liquid crystal display apparatus and color display method therefor

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Experimental program
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Embodiment approach 1

[0020] figure 1 It is a diagram showing a schematic configuration of a field sequential color liquid crystal display device (FSC-LCD) according to Embodiment 1 of the present invention. Such as figure 1 As shown, the FSC-LCD of the first embodiment includes a liquid crystal display panel 11 , a backlight 12 , a source driver 13 , a gate driver 14 , and a liquid crystal display (LCD) control drive circuit 15 .

[0021] On the display panel 11 of the FSC-LCD, a TFT array 17 in which a large number of pixels composed of TFTs (Thin Film Transistor: thin film transistors) are arranged is formed. In addition, for example, a nematic liquid crystal is sealed in the display panel 11 , and together with a polarizing plate, a retardation compensation film, and the like, a display element is formed. In addition, the liquid crystal display device described in this embodiment is a device of a field sequential color display method, and the display panel 11 does not include a color filter...

Embodiment approach 2

[0050] image 3 is a diagram showing a configuration example of an output stage signal processing / control circuit according to Embodiment 2 of the present invention, and shows figure 2 A detailed functional block diagram of the output stage signal processing / control circuit 25 is shown. In Embodiment 1, the function capable of freely handling the color field was described, but in image 3 In , a specific structure for realizing this function is shown.

[0051] Such as image 3 As shown, the output stage signal processing / control circuit 25 is configured to include: a grayscale data linear transformation unit 50 as a first transformation unit, a grayscale value calculation unit 52, a field selection unit 54, and a grayscale data conversion unit as a second transformation unit. Gamma conversion unit 56 .

[0052] The image data signal 36 that is input to the output stage signal processing / control circuit 25 generally has a gamma value that differs according to the input sou...

Embodiment approach 3

[0073] Figure 4 It is a diagram showing a detailed configuration of an LCD control drive circuit according to Embodiment 3 of the present invention. In the LCD control drive circuit 15 of the figure, it is shown that the figure 2 In the configuration shown, the video data monitoring circuit 60 is provided between the input stage signal processing / control circuit 21 and the sequencer 22 . In addition, other structures with figure 2 The configurations of Embodiment 1 shown are the same or equivalent, and the same reference numerals are attached to the common configuration parts, and detailed description thereof will be omitted.

[0074] exist Figure 4 Among them, the image data monitoring circuit 60 has the following functions: monitor the input image data, and can adaptively change the color field according to the characteristics of the input image data (for example, what is the main color, what is the sub-dominant color, etc.) structure. Here, as for the judgment of t...

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Abstract

A control drive circuit provided in an FSC-LCD comprises an input stage signal processing / controlling circuit (21) which generates a synchronization signal (32) in synchronization with a frame frequency of an input image signal (30)and image data (34); a sequencer (22) which determines the number of color fields in one frame, a color signal to be allocated to each color field, and the output sequence of the allocated color signals and which generates and outputs field designation signals (38, 40) used to designate the color fields corresponding to the output sequence; and an output stage signal processing / controlling circuit (25) which receives image data (36) from the input stage signal processing / controlling circuit (21) and outputs signals to a source driver (13) and a gate driver (14), in accordance with the field designation signal (38) from the sequencer (22).

Description

technical field [0001] The invention relates to a liquid crystal display device, in particular to a field sequential color liquid crystal display device and a color display method thereof. Background technique [0002] A field sequential color type (FSC method) liquid crystal display device (hereinafter referred to as "FSC-LCD") is a type of display device that displays red, green, and blue as the three primary colors of light in one frame. It is sequentially displayed on the same pixel of the FSC-LCD, and its pixels do not use the color pixels used in the pixels in the usual color filter type LCD (hereinafter expressed as "CF-LCD"). [0003] As we all know, the biggest difficulty of FSC-LCD lies in the occurrence of "color breakup". That is, when a certain display object moves on the display screen of the FSC-LCD, its front and rear ends are seen as iridescent (iridescent). If this color separation can be suppressed to such an extent that there is no problem in practical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G02F1/133G09G3/20G09G3/34
CPCG09G3/3413G09G2310/0235G09G2310/063G09G2320/0242G09G2320/0261G02F1/133622G02F1/133G09G3/20G09G3/36
Inventor 村井博关家一雄若生一广
Owner AOMORI SUPPORT CENT FOR INDAL PROMOTION