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Red-green-blue-white display device and control method

A display device, white technology, applied to static indicators, instruments, etc., can solve the problems of complex design and large memory capacity of the pre-conversion comparison table 100

Active Publication Date: 2012-07-25
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, according to the conversion correction signal Scorr, all the color signals in the original first group of four-color image signals will be adjusted to become the second group of four-color image signals R', G', B', W', Therefore, a large amount of corresponding data must be recorded in the pre-conversion table 100, so its memory capacity will be very large, and the design of the pre-conversion table 100 will be very complicated

Method used

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  • Red-green-blue-white display device and control method
  • Red-green-blue-white display device and control method
  • Red-green-blue-white display device and control method

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Embodiment Construction

[0053] Please refer to figure 2 , which shows the first embodiment of the RGBW display device of the present invention. The RGBW display device 200 includes a four-color conversion unit 210 , a dynamic backlight control unit 220 , a backlight module 230 , a source driver 270 , a gate driver 280 and a pixel array unit 290 . The pixel array unit 290 includes: a plurality of pixel units 295 having a data switch Qd, a liquid crystal capacitor Clc, and a storage capacitor Cst. The source driver 270 provides a plurality of data signals SD1-SDm; and the gate driver 280 provides a plurality of gate signals SG1-SGn to control the pixel unit 295 to receive the data signals SD1-SDm and output the backlight provided by the backlight module 230. The intensity makes the pixel array unit 290 present a picture image.

[0054] The four-color conversion unit 210 receives the three-color image input signals Ri, Gi, Bi, and a plurality of corresponding conversion amplification factors Ssca are...

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Abstract

The invention relates to a red-green-blue-white display device for generating four-color image output signals and a conversion amplification factor according to a three-color image input signal, dynamically adjusting backlight output intensity output by a backlight module to the conversion amplification factor to generate a white signal adjusting proportion value according and further converting a white signal in the four-color image output signals into an upgrade white signal according to the white signal adjusting proportion value. The invention also discloses a control method of the red-green-blue-white display device.

Description

technical field [0001] The present invention relates to a display device and its control method, and in particular to a red, green, blue and white display device and its control method. Background technique [0002] As is well known, the panel of a known liquid crystal display device is formed by arranging many pixels. Each pixel can be further divided into a red sub-pixel (R sub-pixel), a green sub-pixel (G sub-pixel), and a blue sub-pixel (B sub-pixel). That is, the size (size) of each sub-pixel is one third of the size of one pixel. [0003] For portable display devices, power saving and high brightness performance are particularly important. Therefore, a red, green, blue and white display device (hereinafter referred to as a RGBW display device) capable of increasing the transmittance and reducing the energy consumption of the backlight has been developed. That is to say, each pixel on the panel of the display device is composed of a red sub-pixel, a green sub-pixel, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20G09G3/34G09G3/36
Inventor 诸葛慧郑胜文
Owner AU OPTRONICS CORP