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1. CN109377958 - Temperature compensation based gate driving circuit and display

Office China
Application Number 201811473244.6
Application Date 04.12.2018
Publication Number 109377958
Publication Date 22.02.2019
Grant Number 109377958
Grant Date 28.04.2020
Publication Kind B
IPC
G09G 3/36
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
34by control of light from an independent source
36using liquid crystals
CPC
G09G 3/3685
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix ; no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
34by control of light from an independent source
36using liquid crystals
3611Control of matrices with row and column drivers
3685Details of drivers for data electrodes
G09G 2320/041
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2320Control of display operating conditions
04Maintaining the quality of display appearance
041Temperature compensation
Applicants SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
深圳市华星光电半导体显示技术有限公司
Inventors SHAO WEI
邵伟
Agents 深圳翼盛智成知识产权事务所(普通合伙) 44300
Title
(EN) Temperature compensation based gate driving circuit and display
(ZH) 基于温度补偿的栅极驱动电路及显示器
Abstract
(EN)
The invention provides a temperature compensation based gate driving circuit applied to a liquid crystal panel. The circuit comprises a DC voltage source, voltage dividing unit, an amorphous silicon thin film transistor (TFT), a power management module and a gate driving module; and one end of the DC voltage source is connected with the drain of the amorphous silicon TFT, the drain of the amorphous silicon TFT is connected with the gate of the same, the source of the amorphous silicon TFT is connected with one end of the voltage dividing unit, the other end of the voltage dividing unit is connected with the other end of the DC voltage source, the power management module is connected to a common node of the voltage dividing unit and the amorphous silicon TFT, the power management module isconnected with the gate driving module, and the power management module adjusts a voltage value output to the gate driving module according to voltage change of the common node, and thus, the gate driving voltages of different pixel units of the display panel are adjusted.

(ZH)
本申请实施例提供的基于温度补偿的栅极驱动电路,应用于液晶面板中,包括:直流电压源、分压单元、非晶硅薄膜晶体管、电源管理模组以及栅极驱动模组;直流电压源的一端与非晶硅薄膜晶体管的漏极连接,非晶硅薄膜晶体管的漏极与非晶硅薄膜晶体管的栅极连接,非晶硅薄膜晶体管的源极与分压单元的一端连接,分压单元的另一端与直流电压源的另一端连接,电源管理模组与分压单元以及非晶硅薄膜晶体管的公共节点连接,电源管理模组与栅极驱动模组连接,电源管理模组根据公共节点的电压变化调整输出给栅极驱动模组的电压值,从而调整显示面板的各个像素单元的栅极驱动电压。

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