Capacitive touch screen and touch device with same

A capacitive touch screen, touch screen technology, applied in electrical digital data processing, data processing input/output process, instruments and other directions, can solve the problem of inability to effectively detect capacitance changes, and achieve the effect of increasing distance and widening the screen

Inactive Publication Date: 2012-12-12
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to at least solve one of the above-mentioned technical defects, especially the defect that the capacitance variation cannot be detected effectively

Method used

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  • Capacitive touch screen and touch device with same
  • Capacitive touch screen and touch device with same
  • Capacitive touch screen and touch device with same

Examples

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Embodiment Construction

[0020] 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.

[0021] In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or elem...

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PUM

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Abstract

The invention discloses a capacitive touch screen which comprises a transparent substrate, a plurality of first parts, a plurality of second parts and one or multiple pad structures. The first parts are arranged in parallel on the transparent substrate at intervals. The second parts are arranged in parallel and at intervals. The second parts and the first parts form preset angles. Part of each second part forms mutual capacitance with part of the first part adjacent to the second part. The one or multiple pad structures are formed between the first parts and the second parts. The pad structures are conductive so that variation in the mutual capacitance between the first parts and the second parts before and after touch is increased. By the aid of the one or multiple pad structures added to the capacitive touch screen, adjustable range of the mutual capacitance values can be enlarged, quantity of finger negative charges absorbed by an exciting part is increased, and variation in the mutual capacitance is increased.

Description

technical field [0001] The invention relates to the technical field of touch control, in particular to an improved capacitive touch screen and a touch device with the capacitive touch screen. Background technique [0002] With the advancement of technology, mutual capacitive touch screens are more and more widely used in various devices, such as: mobile phone touch screens, notebook touchpads, PDAs, keyboards and other fields. A mutual capacitance structure is formed between the excitation component (TX) and the detection component (RX). When the finger touches or approaches the screen, the excitation component (TX) will absorb the negative charge on the finger, and the negative charge of the corresponding absorption detection component (RX) will be Reduced, so the mutual capacitance will become smaller. Using signal detection technology, the small capacitance change is converted into a DC voltage signal output in a linear relationship with it. Through microcomputer processi...

Claims

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Application Information

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IPC IPC(8): G06F3/044
Inventor 张荣斌李振刚黄臣杨云
Owner BYD CO LTD
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