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Source electrode drive device

A technology of source driving and driving voltage, which can be used in instruments, electrical components, logic circuits using basic logic circuit components, etc., and can solve problems such as decreased operation stability and increased buffer process area

Inactive Publication Date: 2009-02-25
NOVATEK MICROELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, those with ordinary knowledge in this field should know that if all the buffers OPB inside the source driver device 100 1 -OPB 64 The driving ability of the excessively improved, in addition to increasing the buffer OPB 1 -OPB 64 In addition to the process area, it will also cause more buffer OPB 1 -OPB 64 Additional quiescent / dynamic current consumption, which in turn causes the snubber OPB 1 -OPB 64 The operating stability drops

Method used

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Embodiment Construction

[0040] The technical effect to be achieved by the present invention is mainly that under the condition that the total number of channels of the source driver device increases, it is not necessary to excessively increase the driving capability of its internal buffer, that is, it has enough capability to drive all the channels in the liquid crystal display panel. pixels. The following content will be described in detail with regard to the technical features of this case, so as to provide reference for those with ordinary knowledge in the field of the present invention.

[0041] FIG. 2 shows a circuit diagram of a source driver device 200 according to the first embodiment of the present invention. Please refer to FIG. 2 , in order to allow those skilled in the art related to the present invention to understand the spirit of the present invention more clearly, it is first assumed that the total number of channels of the source driver 200 is 400, and its grayscale resolution is 6 di...

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Abstract

A source drive device is characterized in that the source drive device has enough capacity to drive all pixels in a liquid crystal display panel mainly by using the unique connection manner of a plurality of first switches, a plurality of second switches, a plurality of first connection lines and a plurality of second connection lines, or using a digital logic gate in combination with a latch under the condition of increasing the number of the total channels of the source drive device and not excessively improving the driving capability of a buffer in the device.

Description

technical field [0001] The present invention relates to a source drive device of a liquid crystal display, and in particular to a source drive device that has sufficient driving capability without excessively increasing the drive capability of its internal buffer under the condition that the total number of channels of the source drive device increases. The ability to drive the source driver of all the pixels in the LCD panel. Background technique [0002] In recent years, since people have higher and higher requirements for the display quality of liquid crystal displays (LCDs), in order to achieve the purpose of high pixel quality of LCDs, the solution is to increase the resolution of LCD panels. , so as to satisfy people's visual enjoyment. [0003] FIG. 1 shows a circuit diagram of a conventional source driver device 100 . Please refer to FIG. 1 , assuming that the total number of channels of the source driving device 100 is 200, and the gray scale resolution is 6 bits,...

Claims

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Application Information

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IPC IPC(8): G09G3/36G09G3/20G02F1/133H03K19/00H03K19/173
Inventor 谢晋升
Owner NOVATEK MICROELECTRONICS CORP