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Projected capacitive touch screen

A technology of projected capacitance and touch screen, applied in the direction of electric digital data processing, instrument, data processing input/output process, etc., can solve the problems of slow response and inaccurate touch, and achieve sensitive response, slow response and accurate touch Effect

Inactive Publication Date: 2009-11-04
NANJING WALLY ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, using thin film as the substrate of the projected capacitive touch screen will lead to problems of inaccurate touch and slow response

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0022] The projected capacitive touch screen structure of the present invention is as follows Figure 1-3 As shown, in order to clearly show the specific structure of auxiliary materials, figure 1 The components are shown separately. The projected capacitive touch screen includes a conductive layer covering the substrate. The conductive layer includes upper and lower conductive layers 1 and 2, which are respectively covered on the upper and lower substrates 3 and 4. The upper and lower conductive layers are bonded by optical glue 9 . The base material is a thin film, and the conductive layer is an ITO conductive layer. By etching, electrode strips 5 parallel to each other are formed. The electrode strips distributed on the upper and lower conductive layers are perpendicular to each other, and are respectively used as a row electrode matrix and a column electrode matrix. , identify the coordinates through the cooperation of row and column matrices. The number of row electrod...

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Abstract

The invention relates to a projected capacitive touch screen, which can greatly shorten scanning time and improve signal-to-noise ratio, and has accurate touch and sensitive response. The projected capacitive touch screen comprises a conductive layer covered on a substrate, the conductive layer comprises electrode strips, and each electrode strip is connected with more than two conducting wires which are connected with an external circuit. As a preferable mode, two ends of each electrode strip are connected with a conducting wire respectively. The substrate can be made of known various materials, preferably, the substrate is a membrane. By the projected capacitive touch screen, the problem that the face resistance value is overlarge when an ITO conductive layer uses the membrane as the substrate at present is well solved, the problems that the touch of the projected capacitive touch screen of an ITO membrane structure is inaccurate and the response is not sensitive are effectively solved, the dependency on raw materials is reduced, the material selection range of the projected capacitive touch screen of the ITO membrane structure is enlarged, and the projected capacitive touch screen of the membrane structure is feasible to be produced on a large scale.

Description

technical field [0001] The invention relates to a projected capacitive touch screen. Background technique [0002] With the continuous development of science and technology, touch screen, as a simple and convenient way of human-computer interaction, has been widely used in various fields of our daily life, such as mobile phones, media players, navigation systems, digital cameras, digital photo frames, PDAs, games Equipment, displays, appliance controls, medical equipment, and more. Common touchscreen technologies include resistive and projected capacitive touchscreens for mobile devices and consumer electronics, and surface capacitive, surface acoustic wave (SAW) and infrared touchscreens for other applications . [0003] Among them, the projected capacitive touch screen is brilliant in consumer electronics applications because of its multi-touch function. The projected capacitive touch screen is equipped with a conductive layer covering the substrate. The conductive laye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
Inventor 孙大鹏
Owner NANJING WALLY ELECTRONICS TECH
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