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Drive circuit and drive method

A technology for driving circuits and switching circuits, applied in instruments, static indicators, etc., can solve problems such as deterioration of display problems, and achieve the effect of overcoming voltage drop

Active Publication Date: 2015-03-11
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the design of the current gamma voltage divider circuit, the buffer amplifier (OP-Buffer) is often used, but because the buffer amplifier itself also has an offset voltage, and the offset voltage of different amplifiers is different due to the difference in the manufacturing process. same, making the above display problems worse

Method used

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  • Drive circuit and drive method
  • Drive circuit and drive method
  • Drive circuit and drive method

Examples

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Embodiment Construction

[0028] The following examples are described in detail in conjunction with the accompanying drawings to better understand the implementation of the present invention, but the provided examples are not intended to limit the scope of the present invention, and the description of the structure and operation is not intended to limit The sequence of its execution, any recombination of components to produce devices with equivalent functions are all within the scope of the present invention. In addition, according to industry standards and common practice, the drawings are only for the purpose of assisting explanation, and are not drawn according to original scale. In fact, the dimensions of various features can be arbitrarily increased or decreased for the convenience of illustration. In the following description, the same components will be described with the same symbols for easy understanding.

[0029] The terms used throughout the specification and claims, unless otherwise noted,...

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PUM

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Abstract

The invention provides a drive circuit and a drive method. The drive circuit comprises a first amplifier, a second amplifier, and a first switching unit. The first and second amplifiers alternately receive a first voltage signal and a second voltage signal and respectively output a third voltage signal and a fourth voltage signal. The first switching unit is electrically connected to the first and second amplifiers, and controlled by a control signal to receive the third voltage signal and the fourth voltage signal. When the control signal has a first accurate position, the first switching unit is used for respectively outputting the third voltage signal and the fourth voltage signal to a first channel and a second channel. When the control signal has a second accurate position, the first switching unit is used for respectively outputting the third voltage signal and the fourth voltage signal to the second channel and the first channel.

Description

technical field [0001] The invention relates to a driving circuit, in particular to a driving circuit applied in a display. Background technique [0002] In today's display technology, a gamma voltage divider circuit is generally used to provide a set of gamma voltage curves to the source driver circuit in the display as a reference voltage to generate the gray scale voltage required by the source driver circuit. When the gamma voltage of the gamma voltage divider circuit deviates due to the resistance of the line, various display problems will occur, such as discontinuous gray scale, image crosstalk (X-talk), or the same gray scale appearing on the display In different areas, the brightness and darkness are different (V-band) and so on. [0003] For the design of the current gamma voltage divider circuit, the buffer amplifier (OP-Buffer) is often used, but because the buffer amplifier itself also has an offset voltage, and the offset voltage of different amplifiers is diff...

Claims

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Application Information

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IPC IPC(8): G09G3/20
Inventor 灍壮宇钟竣帆
Owner AU OPTRONICS CORP