Scanning method of touch screen
A scanning method and touch screen technology, applied in the input/output process of data processing, instruments, electrical digital data processing, etc., can solve the problems of accuracy error, increased production cost, pin staggered, etc., to improve anti-interference performance, improve Production yield and the effect of enhancing the waterproof function
Active Publication Date: 2016-03-23
SUZHOU PIXCIR MICROELECTRONICS
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Problems solved by technology
Although scanning the touch screen according to the above method has greatly improved the scanning efficiency and reduced the error, it still needs to be further improved in terms of waterproofness and anti-interference performance
[0004] In order to overcome the above problems, the applicant submitted an application in October 2012, the application number is: 201210414630.4, the patent not only enhances the waterproof function but also greatly However, during the production and processing of this kind of touch screen, due to the precision error of the pins of each electrode block connected to the chip, the pins may be staggered or overlapped, which not only seriously affects the quality of the touch screen. rate, and poor product consistency, increased production costs
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[0012] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0013] The touch screen of the present invention is provided with a capacitance matrix and a chip composed of several electrodes. When the touch screen scans, the rows and columns of the capacitance matrix are scanned respectively. When scanning the rows or columns of the capacitance matrix of the touch screen, each Simultaneously scan two rows or two columns, obtain the capacitance difference of two rows or two columns, and scan sequentially.
[0014] The scanning method of the touch screen is described in detail below:
[0015] Please refer to figure 1 As shown, if several electrodes 10 are arranged on the touch screen 1, the coordinates of the first row in the X direction (horizontal direction) are respectively X11, X12, X13..., and the coordinates of the second row in the X direction (horizontal direction) The coordinates on are respectively X21, ...
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The invention relates to a scanning method of a touch screen. The touch screen comprises a capacitor matrix which comprises a plurality of electrodes. When the touch screen is scanned, rows and lines of the capacitor matrix are respectively scanned. When the rows of the capacitor matrix of the touch screen are scanned, two rows or two lines are simultaneously scanned each time to obtain the capacitance difference of the two rows or the two lines, and the rows or the lines are sequentially scanned. In any scanning process, if an electrode serves as a reference end, an adjacent second electrode serves as a scanning end, and all the other electrodes serve as excitation ends. The scanning method of the touch screen not only can improve the waterproof function of the touch screen and improve the anti-jamming performance of the touch screen but also can improve the production yield of the touch screen.
Description
technical field [0001] The invention relates to a scanning method of a touch screen, in particular to a scanning method of a capacitive touch screen. Background technique [0002] With the development of science and technology, touch screens have gradually replaced mechanical button panels as new operating interfaces for electronic devices such as mobile phones and notebooks. Currently, touch screens mainly include resistive touch screens, infrared touch screens, and capacitive touch screens, all of which obtain coordinates in different ways. The capacitive touch screen uses conductive materials such as fingers and stylus to approach or touch the touch screen to change the capacitance value of the touch screen. Wait until the position of the touch screen is touched, and perform the touch operation corresponding to the touched position. [0003] Since the capacitive touch screen has the characteristics of multi-finger touch, which can provide humanized operation, it has bee...
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IPC IPC(8): G06F3/044
Inventor 何丽樊永召
Owner SUZHOU PIXCIR MICROELECTRONICS