Display device and method for driving display panel thereof
A technology for displaying panels and screens, applied in static indicators, instruments, etc., can solve the problems of decreased sensing sensitivity of embedded input panels, uneven sensing sensitivity of embedded input panels, and impact on recognition accuracy.
Inactive Publication Date: 2012-11-07
HANNSTAR DISPLAY CORPORATION
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However, in the process of raising the level again, if there is another touch, as shown by the mark 406 or 408, due to the sensing signal level V ROUT It has not yet returned to the normal state, which affects the recognition accuracy when the first few gate lines of the next screen are turned on, resulting in a decrease in the sensitivity of the uppermost part of the embedded input panel
As a result, the embedded input panel has uneven sensing sensitivity
Method used
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[0046] Figure 5 It is a schematic diagram of a display device and a driving method of a display panel thereof according to an embodiment of the present invention. Please refer to Figure 5 , where the mark 500 is the display device. The display device 500 includes a display panel 502 , a source driver 504 , a signal processing circuit 506 and a gate driver 508 . The display panel 502 also includes a sensing circuit 510, a gate line G 1 ~G N And the sensing signal reading line R 1 ~R M . As for marking SG 1 ~SG N Then the gate line driver 508 corresponds to the gate line G 1 ~G N The output gate line signal, marked 512 represents the gate pulse, and T B Indicates the blank period between two screens. In order to facilitate comparison with the prior art, in this embodiment and the following embodiments, the display panel is an embedded input panel, and the sensing circuit includes a charge sensing circuit (such as figure 2 shown) or a current sensing circuit (such...
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The invention relates to a display device and a method for driving a display panel thereof. The display panel is provided with an induction signal reading line, N gate lines and a redundant gate line, wherein N is a natural number. The induction signal reading line is coupled with a plurality of induction circuits. Each induction circuit is coupled with one of the N gate lines and the redundant gate line is coupled with one of the induction circuits. The driving method comprises the following steps of: firstly, driving the N gate lines sequentially and opening the corresponding induction circuits by the gate lines; driving only the redundant gate line or re-driving one of the N gate lines during the blank period between two adjacent frames, so as to maintain the level of the induction signal of an induction signal reading line during the blank period between two adjacent frames to be in such a state that the induction circuits do not induct the level of an input signal input by a user. Therefore, the induction sensitivity of the display panel is ensured to be uniform.
Description
[0001] This application is a divided application based on the Chinese patent application titled "Display Device and Display Panel Driving Method" filed on November 30, 2007 with the application number 200710194063.5. technical field [0002] The present invention relates to a display device and a driving method for a display panel thereof, and in particular to a display device with relatively uniform sensing sensitivity and a driving method for a display panel thereof. Background technique [0003] Among various input panel products, generally the input panel with additional sensing film will not only increase the extra cost, but also reduce the penetration by about 20%. The embedded input panel uses the characteristics of amorphous silicon (Amorphous-Si) to design a sensing circuit capable of sensing touch, and integrates the sensing circuit into a thin film transistor-liquid crystal display (TFT-LCD for short). ) in the thin film transistor array process. In contrast, the...
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IPC IPC(8): G09G3/36G02F1/133
Inventor 潘轩霖郑建勇
Owner HANNSTAR DISPLAY CORPORATION