Touch detection method of touch screen and related equipment
A detection 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 false alarm writing and disconnection of touch points
Active Publication Date: 2019-12-20
HISENSE COMML DISPLAY CO LTD
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Problems solved by technology
[0003]However, when the touch object writes on the capacitive screen, especially when writing with fast strokes, the mutual friction between the stylus and the touch screen will generate static electricity, and the static electricity will Affect the signal of the receiving channel node, forming a signal change similar to the real touch point, which will cause false alarms of the touch point and the problem of writing disconnection
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[0055] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0056] The touch detection method of the touch screen, the device thereof, the touch display device and the readable storage medium provided by the specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0057] The touch screen provided by the embodiment of the present invention is a capacitive screen, and touch detection is realized by mutual capacitance. The touc...
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The invention discloses a touch detection method for a touch screen and related equipment, and the method comprises the steps: detecting a touch signal of each touch node when a touch object contactswith the touch screen, and enabling the touch node with the touch signal greater than a first threshold value to serve as a candidate touch node; for the candidate touch nodes, executing comparison between signals of all the touch nodes in the node matrix and a second threshold value, determining the candidate touch nodes, and abandoning electrostatic interference nodes; calculating the coordinateposition of the touch object on the touch screen and the position of the touch point according to the determined touch signal of the alternative touch node; and distinguishing the alternative touch nodes and the electrostatic interference nodes related to the touch points by adopting the relationship between the touch signals of the touch nodes in the node matrix and the second threshold value, so that the accuracy of touch detection is improved.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a touch detection method of a touch screen and related equipment. Background technique [0002] A touch screen is an electronic system that can detect the presence and position of a touch within a display area. It simplifies the human-computer interaction method, improves the user experience, and is loved by users. In the current touch technology, capacitive touch technology has a good experience in small and medium-sized products. With the cost reduction of capacitive screens and the development of capacitive technology, capacitive touch all-in-one machines are developing and popularizing in larger sizes, such as 86-inch, 110-inch and other large Dimensional touch screens came into being. In order not to change the long-standing writing habits of users, large-size touch all-in-ones will be equipped with writing pens, including active active pen solutions and passive passive pe...
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Login to View More IPC IPC(8): G06F3/041
CPCG06F3/0418
Inventor 李新张连峰王武军
Owner HISENSE COMML DISPLAY CO LTD