Touch screen detection equipment and touch device

A touch screen detection and touch device technology, applied in the fields of instrumentation, calculation, electrical and digital data processing, etc., can solve the problems of submerging the measured capacitance signal, interference, etc., and achieve the effect of convenient design, improved linearity, and improved linearity.

Active Publication Date: 2013-01-30
BYD SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 screen detection equipment and touch device
  • Touch screen detection equipment and touch device
  • Touch screen detection equipment and touch device

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Embodiment Construction

[0026] 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.

[0027] 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. like image 3 As 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 sens...

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Abstract

The invention provides touch screen detection equipment and a touch device. The touch device comprises a substrate, a plurality of disjoint sensing units and a touch screen control chip, wherein the sensing units are formed on the substrate; and each sensing unit comprises a first electrode and a second electrode which are oppositely arranged. The embodiment of the invention can also effectively improve the signal to noise ratio of a circuit, reduce the noise of the circuit and improve the sensing linearity.

Description

technical field [0001] The invention relates to the technical field of electronic equipment design and manufacture, in particular to a touch screen detection device and a touch control 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. like figure 1 Shown is a structural diagram of a common self-capacitance...

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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