Electrostatic discharge protection circuit, display panel and display device

A protection circuit and electrostatic discharge technology, which is applied to emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, circuit devices, etc., can solve problems such as low anti-static ability and impact on display quality of display devices , to achieve the effect of improving anti-static ability, avoiding burning of TFT components, and simple realization
CN103268876BActive Publication Date: 2016-03-30XIAMEN TIANMA MICRO ELECTRONICS
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
XIAMEN TIANMA MICRO ELECTRONICS
Publication Date
2016-03-30

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Abstract

The invention relates to the field of display devices, in particular to an electrostatic discharge protection circuit, a display panel and a display device. According to the embodiment of the invention, the electrostatic discharge protection circuit comprises at least one electrostatic protection element, and the electrostatic protection element comprises a bottom gate electrode, a first insulating layer, an active layer, a second insulating layer, top gate electrodes, a third insulating layer, a first electrode and a second electrode, wherein the bottom gate electrode is positioned on a substrate; the first insulating layer is positioned on the bottom gate electrode; the active layer is positioned on the first insulating layer, and corresponds to the bottom gate electrode; the second insulating layer is positioned on the active layer; the top gate electrodes are positioned on the second insulating layer, and correspond to the active layer; the third insulating layer is positioned on the top gate electrodes; the first and second electrodes are positioned on the two sides of the top gate electrodes on the third insulating layer respectively; the bottom gate electrode and the top gate electrodes are electrically connected with the first electrode and connected with a power cord or a circuit of a display area of the display panel; and the second electrode is electrically connected with the circuit of the display area or the power cord. According to the electrostatic discharge protection circuit, an electrostatic discharge path is added, so that the anti-electrostatic capability is improved.
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Description

technical field

[0001] The invention relates to the field of liquid crystal display devices, in particular to an electrostatic discharge protection circuit, a display panel and a display device with the electrostatic discharge protection circuit. Background technique

[0002] Liquid crystal display (LCD, Liquid Crystal Display) has the characteristics of low power consumption, low radiation and low manufacturing cost, and has been widely used in various electronic devices, such as digital electronic devices such as display devices, televisions, mobile phones, and digital cameras. Among them, the low temperature polysilicon liquid crystal display device (LTPS LCD, Low Temperature PolySilicon Liquid Crystal Display) is a mainstream product in the liquid crystal display device.

[0003] The display panel in the liquid crystal display device includes: a TFT array substrate, a color filter (ColorFilter, CF) substrate, and a liquid crystal located between the TFT array substrate a...

Claims

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