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Gamma voltage driving circuit and its correlated method

A technology of gamma voltage and driving circuit, which is applied in the direction of cathode ray tube indicators, instruments, static indicators, etc., and can solve the problems of uneconomical cost and huge circuit

Inactive Publication Date: 2011-03-16
ILI TECHNOLOGY CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, when the gamma voltage generator needs to provide more voltage values, the circuit will become larger and less economical in terms of cost

Method used

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  • Gamma voltage driving circuit and its correlated method
  • Gamma voltage driving circuit and its correlated method
  • Gamma voltage driving circuit and its correlated method

Examples

Experimental program
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Embodiment Construction

[0048] Please refer to figure 2 , figure 2It is a schematic diagram of the first embodiment of the gamma voltage driving circuit of the present invention. In this embodiment, the gamma voltage driving circuit 200 includes a setting circuit 210 , a gamma voltage generator 220 and a plurality of voltage output modules 230 - 250 . In this embodiment, the number of voltage output modules is three, which respectively correspond to different color components, such as red (R), green (G) and blue (B), and are respectively at different times within a row of scanning time point provides a voltage output. The setting circuit 210 is used to output multiple gamma voltage setting signals R-_Gamma, G-Gamma, and B_Gamma respectively at different time points, and the multiple gamma voltage setting signals R-_Gamma, G-Gamma, and B_Gamma respectively correspond to Different color components, ie the aforementioned red, green and blue. In addition, the gamma voltage generator 220 is coupled ...

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Abstract

A gamma voltage drive circuit comprises a setting circuit, a gamma voltage generator and a plurality of voltage output modules. The setting circuit respectively outputs a plurality of gamma voltage setting signals at different time points. The gamma voltage generator respectively converts the gamma voltage setting signals into a plurality of corresponding voltage levels. The voltage output modules provide voltage output respectively at different time points and each voltage output module includes a plurality of voltage output circuits and a plurality of output control circuits. Each voltage output circuit includes a voltage selection unit and an output buffer unit. The output control circuit controls whether the voltage output circuit outputs gamma voltage or not.

Description

technical field [0001] The present invention relates to a gamma voltage driving circuit and a related method thereof, in particular to a driving circuit for sharing a gamma voltage generator through timing control and a related method thereof. Background technique [0002] In recent years, the flat panel display (FPD) with small size and high display quality has been booming in the consumer market. The types of flat panel displays mainly include plasma display (Plasma Display Panel, PDP), liquid crystal display (Liquid Crystal Display, LCD), and rear projection display (Rear Projection Display), etc. These flat-panel displays have the common advantages of small size and high display quality, and have gradually replaced the traditional cathode ray tube display (Cathode RayTube Display, CRT), so they are widely used in notebook computers (NotebookComputer), personal digital assistant (Personal Digital Assistant) Assistant, PDA), flat-screen TV, or mobile phone and other infor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20G09G5/02
Inventor 江伟山刘铭晃林修平林孟勇韩承宪欧威扬
Owner ILI TECHNOLOGY CORPORATION