Single-layer multi-point capacitive touch screen

A capacitive touch screen, single-layer multi-point technology, applied in the direction of electrical digital data processing, instruments, data processing input/output process, etc., can solve the problems of complex bridging process, high production cost, and many manufacturing processes

Active Publication Date: 2013-01-02
CHIPONE TECH BEIJINGCO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the double-sided ITO capacitive touch screen needs to form two ITO coating layers on the insulating medium and etch them separately. The manufacturing process is more, which also makes the production cost higher.
However, the single-sided ITO bridging capacitive touch screen needs to bridge the electrodes on the same plane, and the complexity of the bridging process also makes the production cost higher.

Method used

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  • Single-layer multi-point capacitive touch screen
  • Single-layer multi-point capacitive touch screen

Examples

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Embodiment Construction

[0018] Such as figure 1 The overall structure of the single-layer multi-point capacitive touch screen of the present application is shown, and the single-layer multi-point capacitive touch screen of the present application is composed of multiple groups of repeated electrode units. Each repeating electrode unit is composed of a driving electrode and a sensing electrode that is complementary in shape to the driving electrode but is isolated from each other and has no electrical connection.

[0019] Such as figure 2 show figure 1 A magnified view of region A in the figure, showing four complete repeating electrode units 4 ( figure 2 In the circle is a repeating electrode unit). Among them, 1 is the ground isolation line, 2 is the sensing electrode, and 3 is the driving electrode. There is no electrical connection between the driving electrodes and the driving electrodes. The driving electrodes in each repeating electrode unit have a lead-out line on the far right, and eac...

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Abstract

The invention discloses a single-layer multi-point capacitive touch screen which comprises a plurality of drive electrodes formed on a same electrode layer, lead-out wires, and a plurality of induction electrodes which are complementary with the drive electrodes but are wirelessly connected and mutually isolated, wherein each drive electrode and the induction electrode complementary with the drive electrode form a repeated electrode unit; each drive electrode is composed of a plurality of first strip electrodes whose upper parts are connected, and the appearance of each first strip electrode is similar to a plurality of Chinese characters 'zhong' connected up and down; the induction electrodes in the same column of repeated electrode units are directly connected so as to form a plurality of columns of induction electrodes, and the drive electrodes in the same row of repeated electrode units are connected through the lead-out wires on a flexible circuit board or a printed circuit board, thereby forming a plurality of rows of drive electrodes. Mutual-capacitance change is formed between the lateral walls of the drive electrodes and the induction electrodes before and after the detection, so as to determine a touch position.

Description

Technical field: [0001] The invention relates to a touch screen, in particular to the structure of a mutual capacitance active touch screen. Background technique: [0002] In the current touch screen field, there are mainly resistive touch screens, photoelectric touch screens, surface acoustic wave touch screens and capacitive touch screens. [0003] Resistive touch screen is still the leading product in the market at present, but the structure of the double-layer substrate of the resistive touch screen makes the touch screen and the display panel overlapped and used together, the reflection of the touch screen greatly affects the display brightness, contrast, color saturation, etc. The quality of the entire display will be greatly reduced, and increasing the brightness of the backlight of the display panel will also increase the power consumption; the analog resistive touch screen has the problem of positioning drift, which needs to be calibrated frequently; in addition, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
Inventor 张晋芳曲孔宁
Owner CHIPONE TECH BEIJINGCO LTD
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