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A 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: 2017-11-10
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 (Gate driver on array) circuit is equipped with the All Gate On function, due to the existence of the bootstrap capacitor, the gate drive signal in the GOA circuit will not immediately become inactive after the All Gate On function is completed. , so there is a possibility of generating redundant gate drive signals and causing circuit failure

Method used

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  • A goa circuit and liquid crystal display
  • A goa circuit and liquid crystal display
  • A goa circuit and liquid crystal display

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Embodiment Construction

[0022] Some terms are used to refer to specific components in the specification 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 multiple GOA units 11 and control modules 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 second contr...

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PUM

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Abstract

The invention discloses a GOA circuit and a liquid crystal display. The GOA circuit includes a plurality of cascaded GOA units and control modules, and each GOA unit is used to control the display area under the drive of the first-level transmission clock, the second-level transmission clock, the first control clock, and the second control clock. The corresponding horizontal scanning lines are charged, and the control module is used to control the gate driving signals on the horizontal scanning lines to reset to the first level, that is, the inactive level, through the start pulse signal after the GOA circuit charges all the horizontal scanning lines at the same time. It can avoid generating redundant pulse signals on the horizontal scanning line before the output of the first gate driving signal, thereby ensuring the normal operation of the GOA circuit.

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 (Gate driver on array) circuit is equipped with the All Gate On function, due to the existence of the bootstrap capacitor, the gate drive signal in the GOA circuit will not immediately become inactive after the All Gate On function is completed. , so there is a possibility of generating redundant gate driving signals, which further leads to failure of the circuit. [0003] Among them, the All Gate On function refers to setting all gate drive signals in the GOA circuit to active levels to charge all horizontal scanning lines at the same time, thereby clearing the residual charge of each pixel in the LCD to solve the problem of switching on and off. There is an afterimage problem. Contents of the invention [0004] The technical problem mainly solved by the present invention is to prov...

Claims

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Application Information

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Patent Type & Authority Patents(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