Panel function test circuit, display panel, function testing method and electrostatic protection method
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A technology for display panels and test circuits, applied in emergency protection detection, static indicators, optics, etc., can solve the problems of multi-wiring space, occupation, etc., and achieve the effect of reducing occupation
Inactive Publication Date: 2014-09-03
BOE TECH GRP CO LTD +1
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[0006] The purpose of the present invention is to provide a panel function test circuit, a display panel and its function test, and an electrostatic protection method to solve the problem that the electrostatic protection circuit of the panel test circuit of the display panel occupies more wiring space
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[0047] The implementation process of the embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that the same or similar reference numerals represent 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 only for explaining the present invention and should not be construed as limiting the present invention.
[0048] Based on the consideration of improving the yield rate of the display panel, various tests are performed in the production of the display panel. Usually multiple display panels are carried out as one production unit, that is, multiple display panels are integrated before cutting, and the point screen detection is tested before the display panel is cut, which is completed by the panel function test circuit. After being cut into an individual display panel, the individual displa...
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Abstract
The invention discloses a panel function test circuit, a display panel, a function testing method and an electrostatic protection method. The invention settles a problem that a relatively large wiring space is occupied by the panel test circuit and the electrostatic protection circuit of the display panel in the prior art. The panel function test circuit comprises a first subcircuit and a second subcircuit which are electrically connected with a same data line of the display panel. The first subcircuit and the second subcircuit are used for supplying testing signals to the data line of the display panel in a testing state; or used for performing electrostatic discharging on electrostatic signals transmitted by the data line of the display panel in an operation state. In an embodiment of the invention, the panel function test circuit is compatible with an electrostatic protection function. The number of the elements and corresponding wirings are reduced, thereby saving wiring space.
Description
technical field [0001] The invention relates to the field of liquid crystal display, in particular to a panel function test circuit, a display panel and a function test, and an electrostatic protection method. Background technique [0002] Thin Film Transistor Liquid Crystal Display (TFT-LCD) has the characteristics of small size, low power consumption, and no radiation. It has developed rapidly in recent years and occupies a dominant position in the current flat panel display market. At present, TFT-LCD has been widely used in various large, medium and small-sized products, covering almost the main electronic products in today's information society, such as LCD TV, high-definition digital TV, computer (desktop and notebook), mobile phone, PDA, GPS, car display, projection display, video camera, digital camera, electronic watch, calculator, electronic instrument, meter, public display and virtual display, etc. [0003] At present, the TFT-LCD display panel production line i...
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