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Source electrode driving device and driving method thereof

A technology of source driving and encoding data, which is applied to instruments, static indicators, etc., and can solve problems such as not being smooth, affecting display quality, etc.

Active Publication Date: 2011-08-17
RAYDIUM SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that in places where a large number of digits change, there will be no smoothness, which will seriously affect the display quality.

Method used

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  • Source electrode driving device and driving method thereof
  • Source electrode driving device and driving method thereof
  • Source electrode driving device and driving method thereof

Examples

Experimental program
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Embodiment Construction

[0027] Please refer to image 3 , which shows a schematic diagram of a source driving device according to a preferred embodiment of the present invention. The source driver 40 includes an encoder 20 and a source driver 30 . The encoder 20 encodes the n-bit video data Y1 into coded data Y2 according to an appropriate coding rule, and the coded data Y2 makes the number of bit changes between two adjacent gray scales in the video data Y1 smaller than n. The source driver 30 outputs the pixel voltage corresponding to the video data Y1 according to the coded data Y2.

[0028] Please refer to Figure 4 , which shows the encoding table of the first encoding rule. The foregoing coding rules are, for example, Gray codes. Taking 6 bits as an example, the video data Y1 is coded into coded data Y2 by the coder 20 in a gray code coding manner. When the decimal value of the video data Y1 before encoding is "31", the corresponding binary value is 011111, and the corresponding binary valu...

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PUM

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Abstract

The invention relates to a source electrode driving device and a driving method thereof. The source electrode driving device comprises an encoder and a source electrode driver, wherein the encoder encodes n bits of video data as encoding data according to an encoding rule; and the encoding data ensures that the number of bit changes of two adjacent gray scales is less than n. The source electrodedriver outputs pixel voltage corresponding to the video data according to the encoding data.

Description

technical field [0001] The present invention relates to a source driving device and its driving method, and in particular to a source driving device and its driving method for suppressing noise. Background technique [0002] Please refer to FIG. 1 , which shows a block diagram of a source driver. The source driver 10 includes a shift register 110 , a first row latch 120 , a second row latch 130 , a level shifter 140 and a digital-to-analog converter 150 . The shift register 110 is used to control the first row of latches 120 to receive video data sequentially. After the first row of latches 120 completes the receiving operation, the first row of latches 120 outputs the stored video data to the second row of latches 130 . The video data stored in the second row latch 130 is output to the digital-to-analog converter 150 after the voltage level is changed by the level shifter 140 , so as to output the corresponding pixel voltage to drive the display panel. [0003] However, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20
Inventor 洪绍评
Owner RAYDIUM SEMICON