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Common voltage generation circuit and method, and display device

A common voltage and generating circuit technology, applied in the method, display device, and common voltage generating circuit field, can solve the problems of occupying PCBA board space, occupying serial interface, high design cost, etc., and achieves improved ease, low cost, and structural simple effect

Active Publication Date: 2020-06-05
KUSN INFOVISION OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the existing common voltage generating circuit will occupy the serial interface. At the same time, the cost of the digital-to-analog converter in the existing common voltage generating circuit is slightly higher than that of ordinary components, and the volume is also relatively large, which will occupy a large part of the PCBA board space. , resulting in high design cost

Method used

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  • Common voltage generation circuit and method, and display device
  • Common voltage generation circuit and method, and display device
  • Common voltage generation circuit and method, and display device

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Embodiment Construction

[0032] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be implemented in different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention.

[0034] Hereinafter, the present invention will be described in detail with reference t...

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Abstract

The invention discloses a common voltage generating circuit and method, and a display device. The common voltage generating circuit comprises: a first signal generator which provides a visual angle control signal; a second signal generator providing a reference square wave signal; a first switching module outputting one of a first pull-up signal and a second pull-up signal according to the visualangle control signal; a second switching module outputting one of a first power supply signal and a second power supply signal according to the visual angle control signal; and a comparator used for receiving a reference voltage signal and outputting a first common voltage according to the reference voltage signal, the reference square wave signal, the first pull-up signal and the first power supply signal or outputting a second common voltage according to the reference voltage signal, the reference square wave signal, the second pull-up signal and the second power supply signal. The first common voltage and the second common voltage with different amplitudes can be provided for the display device, and meanwhile the circuit is small in size, simple in structure and low in cost.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a common voltage generating circuit, method and display device. Background technique [0002] A liquid crystal display (Liquid Crystal Display, LCD) has many advantages such as thinness, energy saving, and no radiation, so it has gradually replaced the traditional cathode ray tube (CRT) display. Currently, liquid crystal displays are widely used in high-definition digital televisions, desktop computers, personal digital assistants (PDAs), notebook computers, mobile phones, digital cameras and other electronic devices. [0003] At present, wide viewing angles belong to the mainstream development direction of liquid crystal displays. For example, portable electronic devices with wide viewing angles such as notebook computers, personal digital assistants, tablet computers, and mobile phones all use wide viewing angle technology, so that people can see the full and undistorted disp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/3696
Inventor 卢佳惠阮永鑫王博然陈万兴
Owner KUSN INFOVISION OPTOELECTRONICS
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