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A goa circuit, display panel and display device

A technology for display panels and display devices, applied in the fields of display panels, display devices, and GOA circuits, can solve the problems of poor display performance of GOA panels and large impedance of single-layer metal signal lines, so as to improve display performance and realize low-impedance transmission. , the effect of reducing the line impedance

Active Publication Date: 2020-07-31
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0004] The inventors of the present invention have found in the long-term research and development that in the current prior art, the GOA circuit unit in the GOA panel obtains signals from the array substrate through the signal line. In order to reduce the thickness of the GOA panel and simplify its circuit structure, usually the The signal line is set with a single-layer metal, but the impedance of the single-layer metal signal line is relatively large, resulting in poor display performance of the GOA panel

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  • A goa circuit, display panel and display device
  • A goa circuit, display panel and display device
  • A goa circuit, display panel and display device

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Embodiment Construction

[0019] GOA technology is a technology that directly manufactures the gate drive circuit on the TFT substrate to replace the drive chip made by an external silicon chip. Since the GOA circuit can be directly fabricated around the panel, the manufacturing process can be simplified, the product cost can be reduced, the integration degree of the TFT-LCD panel can be improved, and the display panel tends to be thinner. In the GOA circuit structure, the high and low level signals are first expanded into clock signal CK, control signal LC and power drive signal Vss, wherein the control signal LC controls the selective output clock signal CK of the GOA circuit unit as the gate drive signal, and the clock After the signal CK, the control signal LC and the power drive signal Vss are input from the circuit board to the TFT substrate, they need to pass through the signal line to reach the GOA circuit unit, so as to realize the precise control of each scanning line of the TFT substrate, for...

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Abstract

The invention discloses a GOA circuit, a display panel and a display device. Each signal line of the GOA circuit comprises a first metal layer, a first insulating layer and a second metal layer whichare sequentially arranged, wherein a connecting line and the second metal layer are arranged in the same layer and are connected; the second metal layer is connected with the first metal layer througha first through hole formed in the first insulating layer; when connecting lines of other signal lines intersect with the second metal layer, the second metal layer is provided with a first disconnection region, and the connecting lines of other signal lines are connected with a GOA circuit unit through the first disconnection region. The line impedance of the GOA circuit can be reduced, and thedisplay performance of the display panel and the display device can be improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a GOA circuit, a display panel and a display device. Background technique [0002] Thin Film Transistor-Liquid Crystal Display (TFT-LCD) technology is a display technology controlled by a transistor array, and a single pixel is controlled by a TFT array. The signal applied to the pixel contains two basic signals: scanning signal and data signal. The function of the scanning signal is to periodically turn on and off the TFT array. After the scanning signal is input from the circuit board to the array substrate , The chip measured by the panel sequentially applies high-potential signals to the scanning lines (from top to bottom or bottom to top), and the function of the chip is equivalent to a shift register. [0003] With the development of panel technology, especially people's demand for borderless panels, it is proposed to integrate the above-mentioned shift register function ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1345G02F1/1362
CPCG02F1/13454G02F1/136286G02F1/13629
Inventor 尹勇明
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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