ESD protection circuit and method, array substrate, display device
An ESD protection, array substrate technology, applied in emergency protection circuit devices, circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., can solve the problem of large leakage current, data signal and gate signal voltage leakage and other problems, to achieve the effect of suppressing signal voltage loss, expanding flat area, and reducing leakage current
Active Publication Date: 2019-10-08
BOE TECH GRP CO LTD
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Problems solved by technology
[0002] In the related art, the flat area of the ESD (Electro-Static discharge, electrostatic discharge) protection structure is relatively narrow, resulting in a large leakage current in the operating voltage range of the display device, resulting in the leakage of the voltage of the data signal and the gate signal
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[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0027] The ESD protection circuit and method, array substrate, and display device according to the embodiments of the present invention will be described below with reference to the accompanying drawings.
[0028] figure 1 is a schematic block diagram of an ESD protection circuit according to an embodiment of the present invention. Such as figure 1 As shown, the ESD protection circuit includes: an electrostatic initiation terminal P1, an electrostatic discharge terminal P2, an ESD protection component 10 and a negative voltage ...
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The invention discloses an ESD protection circuit, an ESD protection method, an array substrate and a display device. The circuit comprises an electrostatic starting end, an electrostatic discharge end, an ESD protection assembly and a negative pressure supply end. The ESD protection assembly is connected between the electrostatic starting end and the electrostatic discharge end. The ESD protection assembly is used for conducting the static electricity generated by the electrostatic starting end to the electrostatic discharge end. The ESD protection assembly comprises at least one double-gatethin-film transistor. The double-gate thin-film transistor is provided with a first grid electrode and a second grid electrode. The negative pressure supply end is connected with the second grid electrode of the at least one double-gate thin film transistor. The negative pressure supply end is used for providing a negative pressure to the second grid electrode of the at least one double-grid thinfilm transistor so as to expand the flat area of the ESD protection assembly. In this way, by adjusting the voltage of the second grid electrode of the double-gate thin-film transistor, the thresholdvoltage of the thin-film transistor is changed. The flat area of the ESD protection assembly is effectively expanded. The leakage current is reduced, and the signal voltage loss of the display deviceis restrained.
Description
technical field [0001] The present invention relates to the field of display technology, in particular to an ESD protection circuit, an array substrate, a display device and an ESD protection method. Background technique [0002] In the related art, the flat area of the ESD (Electro-Static discharge, electrostatic discharge) protection structure is relatively narrow, resulting in large leakage current in the working voltage range of the display device, resulting in leakage of data signal and gate signal voltage. Contents of the invention [0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. Therefore, the first object of the present invention is to provide an ESD protection circuit, which can effectively expand the flat area and reduce the leakage current. [0004] The second objective of the present invention is to provide an array substrate. The third object of the present invention is to provide a...
Claims
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IPC IPC(8): H02H9/04
Inventor 王玲盖翠丽张保侠徐攀林奕呈
Owner BOE TECH GRP CO LTD