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Voltage level conversion circuit and display panel drive control method

A voltage level, display panel technology, applied in static indicators, instruments, etc., can solve problems such as large instantaneous current, voltage drop, large touch panel noise, etc.

Active Publication Date: 2021-09-03
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] From the foregoing, it can be seen that at the moment when the multiplexer MUXA is turned on (that is, at time t2), the voltage of the data signal SDAT will drop and the data line DL1 will have a large instantaneous current, which may cause the pixel charging rate of the display panel to be insufficient and There will be a momentary large touch panel noise TPN
[0007] However, since most of the stylus currently on the market are active stylus types, the above-mentioned large touch panel noise TPN may cause the stylus to fail to operate smoothly on the touch panel, which needs to be solved urgently

Method used

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  • Voltage level conversion circuit and display panel drive control method
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  • Voltage level conversion circuit and display panel drive control method

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Embodiment Construction

[0070] Below in conjunction with accompanying drawing, structural principle and working principle of the present invention are specifically described:

[0071] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

[0072] In the drawings, certain regions are exaggerated for clarity. Throughout the specification, the same reference numerals denote the same elements. It should be understood that when an element such as a region or a substrate is referred to as being "on" or "connected (or called coupled)" or "electrically connected" to another element, it may be directly on the other element. On or with another element (or referred to as coupling) or electrically connected, or interm...

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Abstract

The invention provides a voltage level conversion circuit and a display panel driving control method. The voltage level conversion circuit is coupled to a plurality of data lines in the display panel through a multiplexer. The voltage level conversion circuit includes a voltage level conversion unit and a control unit. The voltage level conversion unit is coupled to the multiplexer and receives the first voltage level, the second voltage level and the third voltage level respectively, wherein the third voltage level is higher than the second voltage level and the second voltage level above the first voltage level. The control unit is coupled to the voltage level conversion unit for selectively controlling the voltage level conversion unit to output the first voltage level or the second voltage level to the multiplexer according to the voltage level of the timing control signal.

Description

technical field [0001] The present invention relates to a display device, in particular to a voltage level conversion circuit and a display panel driving control method. Background technique [0002] Generally speaking, the output of the source driver in the display device can be coupled to multiple data lines of the display panel through a multiplexer, for example, as figure 1 As shown, the two source driver outputs SO1 and SO2 can be respectively coupled to the four data lines DL1 - DL4 through different multiplexers MUXA and MUXB. [0003] like figure 2 As shown, at the moment when the multiplexer MUXA or MUXB is turned on (such as time t2 and t4), the data signal SDAT output by the source driver will have a voltage drop (Voltage drop), as shown in figure 2 As shown by the dotted circle circle in , the display panel has the problem of insufficient charging rate of the pixels (Pixel). [0004] like image 3 As shown, at the moment when the multiplexer MUXA is turned ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20
CPCG09G3/20
Inventor 张君维黄傑铨
Owner AU OPTRONICS CORP
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