Liquid crystal point reversing drive circuit

A drive circuit and dot inversion technology, which is applied to instruments, static indicators, etc., can solve the problems of high energy consumption and large volume, and achieve the effects of reducing energy consumption, reducing volume, and reducing energy consumption and volume

Inactive Publication Date: 2010-11-03
SITRONIX TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In fact, the first high-voltage selection circuit 10' and the second high-voltage selection circuit 11' are compo

Method used

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  • Liquid crystal point reversing drive circuit
  • Liquid crystal point reversing drive circuit
  • Liquid crystal point reversing drive circuit

Examples

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Example Embodiment

[0034] The present invention will be further described below with reference to the drawings and embodiments.

[0035] The liquid crystal dot inversion driving circuit of the flat panel display in the ideal embodiment of the present invention can be applied to various liquid crystal display (Liquid Crystal Display, LCD) signal driving systems, but it is not used to limit the liquid crystal dot inversion driving circuit of the present invention. Application range.

[0036] Figure 5 It is a block diagram of the first embodiment of the liquid crystal dot inversion driving circuit of the present invention. As shown in the figure, the liquid crystal dot inversion driving circuit in the first embodiment of the present invention includes a positive signal source 20, a negative signal source 21, a first selection unit 30, a second selection unit 31, a first signal source S1, and a second signal source. Source S2.

[0037] Such as Figure 5 As shown, the positive signal source 20 provides t...

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PUM

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Abstract

The invention provides a liquid crystal point reversing drive circuit, comprising a positive signal source, a negative signal source, a first selection unit and a second selection unit, wherein, the positive signal source provides a first positive signal and a second positive signal; the negative signal source provides a first negative signal source and a second negative signal source; the first selection unit is connected with the positive signal source and the negative signal source and used for receiving the first positive signal of the positive signal source and the first negative signal of the negative signal source, and the unit is composed of low-voltage elements; the second selection unit is connected with the positive signal source and the negative signal source and used for receiving the second positive signal of the positive signal source and the second negative signal of the negative signal source, and the unit is composed of low-voltage elements; the first signal source is connected with the first selection unit to alternately output a first positive voltage and a first negative voltage; and the second signal source is connected with the second selection unit to alternately output a second positive voltage and a second negative voltage. The drive circuit forms output of the positive voltage and the negative voltage of two source electrodes by single positive signal source and single negative signal source, thus reducing the usage quantity of a computing amplifier.

Description

technical field [0001] The invention relates to a liquid crystal dot inversion driving circuit, in particular to a simplified liquid crystal dot inversion driving circuit. Background technique [0002] Generally speaking, multiple pixels of an existing flat panel display are controlled by corresponding multiple thin film transistors (TFTs) (not shown), so as to control a liquid crystal display (LCD display) to display desired images. Several gate driving lines of the flat panel display are connected to gates of corresponding thin film transistors to control switching operations of these thin film transistors. [0003] like figure 1 As shown, the two frames in the figure represent the polarity of the liquid crystal capacitor gate (gate) and signal source (source) when the liquid crystal capacitor is charged at the voltage polarity change point reversed. The two frames are respectively the first frame N and the second frame N+1. For example, the first frame N and the second...

Claims

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Application Information

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IPC IPC(8): G09G3/36
Inventor 洪德儒林春生叶政忠
Owner SITRONIX TECH CORP
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