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Gate drive circuit

A gate drive circuit and stage gate technology, applied in static indicators, instruments, etc., can solve the problems of affecting the display effect, unfavorable application and promotion of liquid crystal displays, and the influence of TFT on-state characteristics, achieving high stability and reliability sexual effect

Active Publication Date: 2019-06-11
KUSN INFOVISION OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, for liquid crystal displays used in automotive industrial control, because they are in a low-temperature working environment, and too low temperature will affect the on-state characteristics of TFTs, thereby affecting the display effect, which is not conducive to the use of liquid crystal displays in The application and promotion in the field of automotive industrial control puts forward higher requirements for the driving capability, stability and reliability of the gate drive circuit

Method used

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Embodiment Construction

[0021] The present invention will be described in more detail below with reference to the accompanying drawings. In the various figures, like elements are designated by like reference numerals. For the sake of clarity, various parts in the figures have not been drawn to scale. Additionally, some well-known parts may not be shown in the drawings.

[0022] Numerous specific details of the present invention are described below, such as device structures, materials, dimensions, processing techniques and techniques, in order to provide a clearer understanding of the present invention. However, as can be understood by one skilled in the art, the present invention may be practiced without these specific details.

[0023] The gate driving circuit (also referred to as a shift register) of the present invention includes a multi-level gate driving unit (also referred to as a shift register unit), and the gate driving unit of each stage is respectively connected with each row of gates o...

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Abstract

The invention discloses a grid driving circuit. The grid driving circuit is characterized by comprising multiple stages of grid driving units, each stage of grid driving unit is used for driving one corresponding grid line on a display panel, each stage of grid driving unit comprises a low temperature stabilizing unit, the low temperature stability unit is used for stabilizing a driving signal and a transmission signal outputted by the present-stage grid driving unit when environment temperature is lower than a first threshold, the low temperature stabilizing unit comprises first to twelfth switch components, and the grid driving circuit further comprises thirteenth to twenty-eighth switch components. According to the grid driving unit, the low temperature stabilizing unit is additionally arranged, when the environment temperature is lower than the first threshold, stability of the transmission signal and the driving signal of each stage of grid driving unit is improved, and thereby the grid driving circuit is guaranteed to work stably in a low temperature environment.

Description

technical field [0001] The invention belongs to the field of liquid crystal displays, and more particularly, relates to a gate driving circuit. Background technique [0002] Liquid crystal display devices have many advantages such as lightness, energy saving, and no radiation, so they have gradually replaced traditional cathode ray tube displays. At present, liquid crystal displays are widely used in electronic devices such as high-definition digital televisions, desktop computers, personal digital assistants (PADs), notebook computers, mobile phones, and digital cameras. [0003] Taking a thin film transistor (Thin Film Transistor, TFT) liquid crystal display device as an example, it includes: a liquid crystal display panel and a driving circuit, wherein the liquid crystal display panel includes a plurality of gate lines and a plurality of data lines, and two adjacent gate lines The pole line intersects with two adjacent data lines to form a pixel unit, and each pixel unit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
CPCG09G3/3677G09G2310/0264
Inventor 李海波郑会龙乔艳冰
Owner KUSN INFOVISION OPTOELECTRONICS