Driving circuit and driving method
A driving circuit and driving method technology, applied in the direction of instruments, static indicators, etc., can solve the problems of panel heating and burning, hidden dangers, fire and other problems
Active Publication Date: 2018-02-27
SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology
[0003] In the current liquid crystal panel manufacturing process, it is easy to short-circuit the wiring in the edge area of the liquid crystal panel, especially the short-circuit between the output terminals of the level conversion circuit, and because the output of the level conversion circuit is between the high voltage and the low voltage The voltage difference will be above 35V, and the short circuit will cause a large voltage difference and current. This large voltage difference and current will cause the panel to heat up and burn out at the short-circuit point, and even cause the melting screen and fire. pose a great safety hazard
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[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.
[0034] An embodiment of the present invention provides a driving circuit, which includes a level conversion circuit and an overcurrent protection module connected to the level conversion circuit, wherein the overcurrent protection module is used to detect the current output by the level conversion circuit, And control the level conversion circuit to stop the output voltage or control the level conversion circuit to reduce the output voltage. The drive circuit provided b...
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The invention provides a driving circuit and a driving method. Through arrangement of an over-current protection module, output control is conducted on a level switching circuit, wherein the over-current protection module comprises a detection module, a judgment module, a counting module and a short circuit protection module. Real-time detection can be conducted on an electric current simply and effectively, protection is rapidly conducted after a short circuit occurs, occurrence of the phenomena of panel short circuit point burning, screen fusing and ignition caused by the short circuit is effectively prevented, and generation of a potential safety hazard is effectively prevented.
Description
technical field [0001] The invention relates to the field of liquid crystal display, in particular to a driving circuit and a driving method. Background technique [0002] GOA (Gate On Array, gate integrated drive) technology is the current development trend of liquid crystal display panels. The use of GOA technology can effectively save the use of flexible circuit boards. Among them, the signals required in the GOA drive circuit are controlled by each level conversion circuit output provided. [0003] In the current liquid crystal panel manufacturing process, it is easy to short-circuit the wiring in the edge area of the liquid crystal panel, especially the short-circuit between the output terminals of the level conversion circuit, and because the output of the level conversion circuit is between the high voltage and the low voltage The voltage difference will be above 35V, and the short circuit will cause a large voltage difference and current. This large voltage differ...
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Login to View More IPC IPC(8): G09G3/00G09G3/36
CPCG09G3/006G09G3/3696
Inventor 张先明曹丹
Owner SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD