Screen clearing circuit and display device
A display device and circuit technology, applied in static indicators, instruments, etc., can solve the problems of increased power consumption and cost, and no way to clear the screen, and achieve the effects of removing afterimages, simple structure, and low cost
Active Publication Date: 2017-07-18
KUSN INFOVISION OPTOELECTRONICS
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Problems solved by technology
[0004] However, the XON function using the Gate Driver IC in the prior art needs to be realized by the internal circuit of the IC, and a screen clearing program is required, which increases power consumption and cost
In addition, if the IC does not have this function, there is no way to clear the screen
Method used
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[0020] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0021] Please refer to figure 1 , figure 1 It is a schematic diagram of a circuit structure of a display device according to an embodiment of the present invention. like figure 1 As shown, the display device includes a clearing circuit 1 , a pixel array 2 , a gate driving circuit 3 , and a source driving circuit 4 . The pixel array 2 includes a plurality of scanning lines 20, a plurality of data lines 21, and a plurality of pixel switching elements 220 electrically connected to the plurality of scanning lines 20 and the plurality of data lines 21, and the plurality of scanning lines 20, the plurality of data lines 21 and a plurality of pixel switch elements 220 form a plurality of pixel units 22 . The gate driving circuit 3 is elec...
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The invention provides a screen clearing circuit and a display device. The screen clearing circuit includes a plurality of first switch elements and a plurality of second switch elements. Each first switch element includes a first control terminal, a first input terminal and a first output terminal, the first control terminal is connected to the first input terminal, and receives a control signal, and each first output terminal is connected to a corresponding one of the display panel. A scan line is connected for inputting a control signal to the scan line. Each second switch element includes a second control terminal, a second input terminal and a second output terminal, the second control terminal receives a control signal, each second input terminal is connected to a corresponding data line of the display panel, and the second output terminal The terminal is connected to the common electrode of the display panel. When the display panel displays images normally, the control signal is at low level; when the display panel is powered off, the control signal jumps to high level. The display device of the present invention adopts the screen clearing circuit to effectively complete the screen clearing of the display panel, and has simple structure and low cost.
Description
technical field [0001] The invention relates to the display field, in particular to a screen clearing circuit and a display device using the screen clearing circuit. Background technique [0002] With the popularity of portable products such as smartphones and smart watches, small-sized display devices are increasingly integrated into people's lives due to their powerful operability and superior portability. requirements are also getting higher. As far as the small-sized display panel is concerned, during the use of the display panel, when the display panel scans from the first line to the last line progressively, in each frame of picture display, each display pixel in the panel keeps displaying this The potential required for one frame of picture. Therefore, when the power of the display panel is turned off, each pixel still maintains the potential of the last frame, and the display panel maintains the display image of the last frame for a period of time. This phenomenon ...
Claims
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IPC IPC(8): G09G3/20
Inventor 陈龙房耸于子阳关佳灵
Owner KUSN INFOVISION OPTOELECTRONICS