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GOA circuit and liquid crystal display

A technology of circuits and transistors, applied in the field of GOA circuits and liquid crystal displays, can solve problems such as redundancy and circuit failure, and achieve the effect of ensuring normal operation

Active Publication Date: 2015-11-11
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the existing GOA (Gatedrive onarray) circuit is equipped with the AllGateOn function, due to the existence of the bootstrap capacitor, the gate drive signal in the GOA circuit will not immediately become inactive after the AllGateOn function is completed, so there is a redundancy Gate drive signal, which may lead to circuit failure

Method used

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  • GOA circuit and liquid crystal display
  • GOA circuit and liquid crystal display
  • GOA circuit and liquid crystal display

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Embodiment Construction

[0022] Certain words are used to refer to specific components in the description and claims, and those skilled in the art should understand that manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a basis for distinction. The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] figure 1 is a schematic structural diagram of the GOA circuit in the first embodiment of the present invention. Such as figure 1 As shown, the GOA circuit 10 includes a plurality of GOA units 11 and a control module 12 cascaded.

[0024] Each GOA unit 11 is used to charge the corresponding horizontal scanning line in the display area driven by the first stage transfer clock CK_A1 , the second stage transfer clock CK_A2 , the first control clock CK_B1 , and the seco...

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Abstract

The invention discloses a GOA circuit and a liquid crystal display. The GOA circuit comprises a plurality of cascaded GOA units and a control module. Each GOA unit is used for charging corresponding horizontal scanning lines in a display area under driving of a first stage of transmitting clock, a second stage of transmitting clock, a first control clock and a second control clock. After the GOA circuit simultaneously charges all the horizontal scanning lines, the control module is used for making grid driving signals on the horizontal scanning lines reset to a first level which is an inactive through starting a pulse signal. A condition that redundant pulse signals are generated on the horizontal scanning lines before a first grid driving signal is output can be avoided so that normal work of the GOA circuit is guaranteed.

Description

technical field [0001] The invention relates to the field of liquid crystals, in particular to a GOA circuit and a liquid crystal display. Background technique [0002] When the existing GOA (Gatedrive onarray) circuit is equipped with the AllGateOn function, due to the existence of the bootstrap capacitor, the gate drive signal in the GOA circuit will not immediately become inactive after the AllGateOn function is completed, so there is a redundancy The gate drive signal, thereby causing the possibility of circuit failure. [0003] Among them, the AllGateOn function refers to setting all the gate drive signals in the GOA circuit to an active level to charge all horizontal scanning lines at the same time, thereby clearing the remaining charge of each pixel in the LCD to solve the problem of residual power when switching on and off. shadow problem. Contents of the invention [0004] The technical problem mainly solved by the present invention is to provide a GOA circuit a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/3677G09G2310/0267G09G2310/0286G11C19/28G09G2300/0809
Inventor 肖军城赵莽
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD