Data drive circuit, liquid crystal display panel, liquid crystal display module and display

A technology for data driving circuits and liquid crystal displays, applied in static indicators, instruments, etc., can solve problems such as the inability to apply the function of left and right inversion, the unusable timing control chip, and the inability to provide support for the timing control chip, so as to improve flexibility. Effect

Active Publication Date: 2006-11-29
AU OPTRONICS CORP
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Problems solved by technology

[0003] However, when the design of the data driving circuit chip is 804 channels, the existing timing control chip cannot be used
like Figure 1B As shown, the 12 channels of one of the data drive circuit chips are not used, and it cannot be applied to the function that requires left-right inversion, and the timing control chip needs to be modified, and a first-in-first-out (FIFO) circ

Method used

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  • Data drive circuit, liquid crystal display panel, liquid crystal display module and display
  • Data drive circuit, liquid crystal display panel, liquid crystal display module and display
  • Data drive circuit, liquid crystal display panel, liquid crystal display module and display

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[0024] In order to improve the flexibility of the data driving circuit chip in application, make it compatible with the existing timing control chip, and avoid the waste of development, some circuits can be added to the existing data driving circuit chip, so that the Some output channels of the data drive circuit chip are closed, so that the total number of channels of the data drive circuit chip is consistent with the horizontal resolution of the screen. The following will use the 804-channel data drive circuit chip to be applied to a thin film transistor with a resolution of 800RGB×480 A liquid crystal display is taken as an example to illustrate the embodiments of the present invention, but the scope of the present invention is not limited thereto.

[0025] In order to selectively turn off some output channels of the data driver circuit chip, the designer can create the following menus:

[0026] ENOS

[0027] Among them, ENOS, OS1, OS2 are the control signals of t...

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Abstract

A data driving circuit used on film transistor liquid crystal display is prepared as switching off N1 numbers of channel outputs including multiplexer and displacement register, receiving level initial signal and at least one control signal by multiplexer and using said control signal to decide signal output of output end on multiplexer, receiving frequency signal and said output signal as well as outputting initial pulse signal by displacement register and using the first image data outputted by the first channel to decide which output end is used to output initial signal according to said output signal.

Description

technical field [0001] The present invention relates to thin film transistor liquid crystal displays, and in particular to data driving circuits thereof. Background technique [0002] like Figure 1A As shown in the figure, in some traditional digital applications, the resolution of the thin film transistor liquid crystal display (TFT-LCD) is 800RGB×480, which requires 5 data drive circuit chips of 480 channels. Since the number of horizontal channels of the screen is 800×3, Exactly equal to the total number of channels that 5 480-channel data drive circuit chips can provide. However, based on the consideration of cost reduction, we will try to reduce the number of data driving circuit chips from 5 to 3, then the number of channels of the data driving circuit chip needs to be changed to 800 channels, but 800 is not a multiple of 3, and in the data driving circuit chip In the design of RGB, RGB is regarded as an inseparable unit. Therefore, the number of 800 channels is not ...

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Application Information

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IPC IPC(8): G09G3/36G09G3/20G02F1/133
Inventor 洪集茂
Owner AU OPTRONICS CORP
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