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Multipoint sensing method of capacitance-type touch panel

A capacitive touch and touch panel technology, which is used in electrical digital data processing, input/output process of data processing, instruments, etc.

Active Publication Date: 2011-01-12
ACER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention is proposed to solve the above problems. The purpose of the present invention is to provide a multi-point sensing method for capacitive touch panels, which adopts a low-noise and fast-response detection method, which can effectively meet the needs of large-size touch panels. needs

Method used

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  • Multipoint sensing method of capacitance-type touch panel
  • Multipoint sensing method of capacitance-type touch panel
  • Multipoint sensing method of capacitance-type touch panel

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Embodiment Construction

[0015] refer to figure 1 and figure 2 , is a touch panel 1 provided by a preferred embodiment of the present invention, which has a display area 1A and a peripheral circuit area 1B, the display area 1A is a touch sensing area, and has a lower electrode layer stacked sequentially from bottom to top 10. The insulating layer 20 and the upper electrode layer 30. The peripheral circuit area 1B is provided with a capacitance detection circuit 40 to detect and identify the touch sensing position of the display area 1A, wherein:

[0016] The lower electrode layer 10 is provided with a plurality of row electrodes 100 at specific intervals and parallel to each other, and these row electrodes 100 also extend to the peripheral circuit area 1B and are electrically connected to the capacitance detection circuit 40; the insulating layer 20 It is made of a material that generally does not have conductive properties to isolate the upper and lower electrode layers 30, 10; the upper electrode ...

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Abstract

The invention relates to a multipoint sensing method of a capacitance-type touch panel, comprising the following steps of: sensing a voltage change of electrodes positioned on a same electrode layer through a capacitance detection circuit; when the voltage change positions of the electrodes are detected, measuring vertical capacitance formed by two electrodes respectively and mutually staggered on different electrode layers on the voltage change positions; and comparing with vertical capacitance formed by crossing of the two electrodes before touch, and if different, judging as an actual touch point.

Description

technical field [0001] The present invention relates to a capacitive touch panel, in particular to a multi-point sensing function of the capacitive touch panel. Background technique [0002] The capacitive touch panel is used to detect whether the human body is in contact with the change of the capacitance value. Generally speaking, it is composed of an electrode array and a capacitance sensing circuit. When the detection signal is input into the upper electrode and the lower electrode of the touch panel, the upper electrode 1. The specific capacitance formed at the interlaced positions of the rows and columns of the lower electrode can be detected by the capacitance sensing circuit, so the sensing circuit can judge whether there is a change in the capacitance value caused by human touch during the process of reading the capacitance value of each position. [0003] When the capacitive sensing circuit determines the touch position and the generated capacitance value, it needs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
Inventor 陈建廷赵昌博阮俊尧
Owner ACER INC
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