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Noise eliminating device of capacitive touch panel and method thereof

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

Active Publication Date: 2012-01-04
EGALAX EMPIA TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] In view of the above-mentioned problems in the prior art, the purpose of the present invention is to provide a noise elimination device and method for a capacitive touch panel, which arranges at least one switch circuit on the X-axis and the Y-axis respectively, so as to Reduce the need to repeat the same circuit at the back end, and at the same time receive the current signal measured by the switch circuit installed on the X-axis and Y-axis, and calculate the coordinate position through a control unit, so as to overcome the problems of time difference and external noise

Method used

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  • Noise eliminating device of capacitive touch panel and method thereof
  • Noise eliminating device of capacitive touch panel and method thereof
  • Noise eliminating device of capacitive touch panel and method thereof

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Embodiment Construction

[0122] The technical solutions of the present invention will be further described in more detail in conjunction with the accompanying drawings and specific embodiments.

[0123] Please refer to image 3 , image 3 It is a schematic diagram of the noise elimination device of the capacitive touch panel of the present invention. like image 3 As shown, the capacitive touch panel is substantially rectangular, and has a transparent substrate conformally formed with the transparent substrate and a sensing layer with transparent conductive properties located on the transparent substrate, and has a first X side, a first Two X sides, a first Y side and a second Y side, the noise elimination device 20 of the present invention includes a sensing source 21, a capacitive touch panel 22, at least one X side switch circuit 23, at least one Y side The switch circuit 24 and a control circuit 27 .

[0124] The sensing source 21 includes a first sensing signal source and a second sensing sig...

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Abstract

The invention discloses a noise eliminating device of a capacitive touch panel, and a method thereof, which are used for eliminating the noise generated by a prior filter circuit and an integration circuit or the exterior noise. The invention simplifies the circuit of a prior capacitive touch panel by at least one switch circuit, the filter circuit and the integration circuit are abandoned, while the signal output by a current measurement circuit is simultaneously transmitted to a control unit to execute the calculation of a touch location so as to achieve the purpose of eliminating noise.

Description

Technical field [0001] The invention involves a noise elimination device and its method, especially the noise elimination device and method of a capacitive touch panel. Background technique [0002] Traditionally, the input of the electronic device is input in the keyboard and mouse, instead of input in the manner of human intuition.After that, the touch panel has been widely used in various types of electronic devices. At this time, the user is able to input the contact point of the electronic device by the user or the touch pens and other objects. At this timeThe sensing device of the sensing device below the control panel is to achieve the purpose of operating the touch electronic device.Classified by sensing mechanisms in the sensing contact input, touch panels can be classified as resistance panels such as resistance, capacitors, sound waves, optical and electromagnetic types;Classification of touch panels and touch panels. [0003] The capacitor -type touch panel based on a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/044
Inventor 张钦富李政翰
Owner EGALAX EMPIA TECH INC