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Touch detecting method, touch screen detecting device and touch device

A touch screen detection and touch device technology, which is applied in the direction of instruments, calculations, electrical digital data processing, etc., can solve the problems of submerging the measured capacitance signal, interference, etc., and achieve the goal of enhancing anti-interference ability, improving linearity, and improving measurement accuracy Effect

Active Publication Date: 2013-01-30
BYD SEMICON CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Moreover, stray capacitance will change with many factors such as temperature, location, internal and external electric field distribution, etc., which will interfere or even submerge the measured capacitance signal

Method used

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  • Touch detecting method, touch screen detecting device and touch device
  • Touch detecting method, touch screen detecting device and touch device
  • Touch detecting method, touch screen detecting device and touch device

Examples

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Embodiment Construction

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0031] The embodiment of the present invention proposes a novel self-capacitance detection method. When the sensing unit is touched, the touch point can divide the sensing unit into two resistances, and the self-capacitance detection can be determined by considering these two resistances at the same time. The position of the touch point on the sensing unit. Such as image 3As shown, it is a schematic diagram of the detection principle of the touch device according to the embodiment of the present invention. When a finger touches the se...

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PUM

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Abstract

The invention provides a touch detecting method, a touch screen detecting device and a touch device. The touch device comprises a substrate, a plurality of sensing units which are not interconnected, and a touch screen control chip, wherein the sensing units are formed on the substrate; and each sensing unit is provided with a first electrode and a second electrode, which are oppositely arranged. With the touch device, the signal-to-noise ratio of a circuit can be effectively improved; the noise of the circuit is lowered; and the sensing linearity can be improved.

Description

technical field [0001] The invention relates to the technical field of design and manufacture of electronic equipment, in particular to a touch detection method, a touch screen and a touch device. Background technique [0002] At present, the application range of touch screen has rapidly expanded from the small commercial market such as bank automatic teller machines and industrial computers to mobile phones, PDA (personal digital assistant), GPS (global positioning system), PMP (MP3, MP4, etc.), and even tablet computers. and other mass consumer electronics fields. The touch screen has the advantages of simple, convenient and humanized touch operation, so the touch screen is expected to become the best interface for human-computer interaction and has been widely used in portable devices. [0003] Capacitive touch screens are generally divided into two categories: self-capacitance and mutual capacitance. Such as figure 1 Shown is a structural diagram of a common self-capa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
CPCG06F3/041G06F3/045G06F3/044G06F3/0443G06F3/0448
Inventor 李振刚黄臣杨云
Owner BYD SEMICON CO LTD
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