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Touch device and scanning method of touch panel thereof

A touch panel and touch device technology, which is applied in the input/output process of data processing, instruments, electrical and digital data processing, etc. Scan times, improve computing speed, and save scanning time

Inactive Publication Date: 2014-07-23
INTERFACE OPTOELECTRONICS SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the touch panel becomes larger, the number of electrodes will increase accordingly, resulting in a corresponding increase in the number of scans required for each scan cycle, resulting in longer scan times and lower scan frequencies

Method used

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  • Touch device and scanning method of touch panel thereof
  • Touch device and scanning method of touch panel thereof
  • Touch device and scanning method of touch panel thereof

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Experimental program
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Embodiment Construction

[0020] refer to figure 1 with figure 2 As shown, the touch device 1 provided by the present invention includes a touch panel 11 and a scan controller 12 . The touch panel 11 includes a plurality of first electrodes 111 and a plurality of second electrodes 112 . In this embodiment, the plurality of first electrodes 111 extend along a first direction (eg, lateral direction). The plurality of second electrodes 112 extend along a second direction (eg, longitudinal direction). The plurality of first electrodes 111 and the plurality of second electrodes 112 are insulated and intersected to form a capacitive touch sensing structure for sensing touch actions. For the convenience of description, in this embodiment, the plurality of first electrodes 111 are marked as X 1 、X 2 、X 3 ,...,X N-2 、X N-1 、X n , the plurality of second electrodes 112 respectively marked Y 1 , Y 2 , Y 3 ,...,Y M-2 , Y M-1 , Y M . In other embodiments, the first electrodes 111 extending in the f...

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Abstract

Provided are a touch device and a scanning method of a touch panel of the touch device. At the first time t1, pulse scanning signals are sent to first electrodes at the same time, and at this moment, the first electrodes are adopted as scanning electrodes, and second electrodes are adopted as sensing electrodes to output sensing signals. When the fact that at least one second electrode is touched is judged according to the sensing signals output by the second electrodes, the scanning range of the second electrodes is determined according to the position of the at least one second electrode. At the second time t2, the pulse scanning signals are sent to the second electrodes within the scanning range in sequence, and at this moment, the second electrodes within the scanning range are adopted as the scanning electrodes, and the first electrodes are adopted as sensing electrodes to output the sensing signals. Finally, a touch point on the touch panel is determined according to the sensing signals output by the first electrodes. According to the touch device and the scanning method, the scanning frequency of the touch panel can be reduced, and the operating speed of the touch device can be improved.

Description

technical field [0001] The invention relates to a touch device and a scanning method thereof. Background technique [0002] A capacitive touch panel of a common touch device, such as a mutual capacitive (mutual) touch panel, generally includes conductive electrodes that are insulated from each other and intersect at right angles. The conductive electrode includes a plurality of (such as M) first electrodes arranged in parallel along the first direction (such as the X-axis direction) and a plurality of (such as M) first electrodes arranged in parallel along the second direction (such as the Y-axis direction) and insulated and intersected with the first electrodes. multiple (eg N) second electrodes. The first electrode and the second electrode constitute an electrode matrix, and most of the existing scanning methods of the first electrode for the touch panel determine the touch control by sequentially sending scan pulses to the first electrode or the second electrode. point....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
CPCG06F3/04166G06F3/0446
Inventor 吴嘉源黄俊宏
Owner INTERFACE OPTOELECTRONICS SHENZHEN
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