Boosting circuit, shutdown circuit, driving method thereof, and display device
A booster circuit and voltage technology, applied in static indicators, instruments, etc., can solve the problems of insufficient gate opening of TFT, flickering of the shutdown screen, pixel voltage difference, etc., to eliminate shutdown afterimages and increase function utilization. , Reduce the effect of residual panel charge
Active Publication Date: 2020-11-13
HEFEI BOE DISPLAY TECH CO LTD +1
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Problems solved by technology
[0004] However, there will be a period of time between the actual power-off and the detection of power-off by the system. At this time, the operating voltage of the device has dropped by a certain voltage difference, which will lead to insufficient opening of the gate of the TFT.
At the same time, because the data signal line (DATA) and the common electrode (COM) in the display are naturally powered off, and there is no control circuit, the pixel voltage difference will be generated when the liquid crystal panel is turned off due to the inconsistent power-down speed of DATA and COM, and then The shutdown screen flickers or afterimages appear
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[0029] Part of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, and unnecessary details and functions for the present disclosure will be omitted during the description to avoid confusing the understanding of the present disclosure. In this specification, the various embodiments described below to describe the principles of the present disclosure are illustrative only and should not be construed in any way to limit the scope of the disclosure. The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the present disclosure as defined by the claims and their equivalents. The following description includes numerous specific details to aid in understanding, but these should be considered as examples only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embo...
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The embodiments of the present disclosure propose a boost circuit and a driving method thereof, a shutdown circuit and a driving method thereof, and a display device. The boost circuit includes: a first transistor, the control terminal of which is coupled to the first input signal terminal, the first terminal is coupled to the cathode of the first diode, and the second terminal is coupled to the output signal terminal; the second transistor , its control terminal is coupled to the second input signal terminal, the first terminal is coupled to the first voltage signal terminal, and the second terminal is coupled to the first node; the anode of the first diode is connected to the A voltage signal terminal is coupled; and a first capacitor, one end of which is coupled to the output signal terminal, and the other end of which is coupled to the first node.
Description
technical field [0001] The present disclosure generally relates to the field of electronic circuits, and more particularly, to a boost circuit and a shutdown circuit, their driving methods, and a display device. Background technique [0002] With the development of the display industry and the improvement of production and living standards, the requirements for all aspects of the display are getting higher and higher. With the increasing output of large-size, high-resolution LCD panels, the quality of the display itself is also constantly improving. However, large-size, high-resolution liquid crystal panels are faced with the problem of heavy panel loading, which often leads to residual charge due to uneven discharge when the display device is turned off, resulting in residual image after shutdown. [0003] Specifically, for example, when the liquid crystal display is turned off, in order to release the charge stored in the pixel storage capacitor and parasitic capacitance ...
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IPC IPC(8): G09G3/36
CPCG09G3/36G09G2330/027G09G3/3648G09G2320/0257G09G2330/028G09G3/3688G09G3/3696
Inventor 王会明马京刘荣铖杨秀琴赵鹏吕炎伟
Owner HEFEI BOE DISPLAY TECH CO LTD