Single layer capacitive touch sensor

A capacitive touch and sensor technology, applied in instruments, electrical digital data processing, input/output process of data processing, etc., can solve problems such as ineffective use, improve touch experience, reduce area, and optimize sensing effect of effect

Inactive Publication Date: 2017-08-29
PIXART IMAGING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the known design, the pattern design of each sensing unit 90 is all the same, and the preset capacitance of the sensing unit is made the same in a passive manner, so the sensing electrode E S and the drive electrodes E D The wiring area outside the wiring cannot be effectively used, and the area with wiring forms a problem of a dead zone (Deadzone), which will cause multiple sensing faults to the touch sensor

Method used

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  • Single layer capacitive touch sensor
  • Single layer capacitive touch sensor
  • Single layer capacitive touch sensor

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Embodiment Construction

[0030] In order to make the above and other objects, features and advantages of the present invention more apparent, a detailed description will be given below with reference to the accompanying drawings. In addition, in description of this invention, the same member is shown by the same code|symbol, and it demonstrates ahead of time here.

[0031] In the following description, the single-layer capacitive touch sensor of the present invention will be described with examples. However, embodiments of the invention are not limited to any particular environment, application or implementation. Therefore, the descriptions of the following embodiments are only illustrative, not intended to limit the present invention. It is understood that components not directly related to the present invention have been omitted from being shown in the following embodiments and illustrations.

[0032] Figure 2A A schematic diagram of the single-layer capacitive touch sensor 1 according to the fi...

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Abstract

The invention provides a single-layer capacitive touch sensor which comprises a plurality of sensing units arrayed on a substrate. Each sensing unit comprises a first electrode, a second electrode and a third electrode, wherein the second electrode is annular and electrically isolated from the first electrode, the first electrode is positioned in an annular internal space, and the third electrode is formed outside the internal space and electrically connected with the first electrode. The second electrodes of at least parts of the sensing units and the third electrodes of two adjacent sensing units respectively form mutual capacitance.

Description

technical field [0001] The present invention relates to a touch sensor, in particular to a single-layer capacitive touch sensor capable of reducing the non-inductive area. Background technique [0002] Among known touch sensors, for example, resistive touch sensors usually have a two-layer structure (such as a thin film electrode) and are respectively applied with a stable voltage, and a plurality of gaps (Spacers) are added between the two-layer structures to make the two layers The layer structures are insulated from one another. When the two-layer structure is pressed by a user through a finger or a stylus at a position, the two-layer structure is conducted (ie, short-circuited) at the position. Therefore, the control integrated circuit (Control IC) can calculate the position touched by the user according to the voltage change of the conduction position, and convert the position signal to the host to complete the corresponding action or execute the preset command. [00...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G06F3/044
CPCG06F3/044G06F2203/04103G06F2203/04112
Inventor杨冠懿
OwnerPIXART IMAGING INC