Unlock instant, AI-driven research and patent intelligence for your innovation.

Capacitive touch screen

A technology of capacitive touch screen and capacitance value, which is applied in the direction of electrical digital data processing, instrumentation, input/output process of data processing, etc., can solve the problems of large number of wiring, high power consumption, complicated scanning, etc., and achieve simple scanning drive circuit , low energy consumption, and fewer leads

Inactive Publication Date: 2009-11-18
INNOCOM TECH SHENZHEN +1
View PDF0 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of large number of wires, complicated scanning and high power consumption of the capacitive touch screen in the prior art, it is necessary to provide a capacitive touch screen with a small number of wires, simple scanning and low power consumption.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Capacitive touch screen
  • Capacitive touch screen
  • Capacitive touch screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] see figure 2 , which is a functional block diagram of a capacitive touch screen system. The touch screen system 2 includes a capacitive touch screen 21 , a capacitive detector 22 , an analog / digital converter 23 and a control chip 24 . The control chip 24 generates a trigger signal 25 and transmits the trigger signal 25 to the capacitive touch screen 21 . When any position of the capacitive touch screen 21 is touched, a corresponding capacitance change is generated at the position, and the capacitance change is measured by the capacitive sensor 22, and then the capacitive sensor 22 transmits this signal to the analog / digital converter 23 to convert the analog signal into a digital signal, and then the digital signal is sent to the control chip 24, and the control chip 24 is responsible for analyzing the coordinates of the touch position.

[0019] see image 3 , which is a schematic plan view of the first embodiment of the capacitive touch screen of the present inven...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a capacitive touch screen, comprising a first sense wire and at least one second sense wire. A plurality of cross points are formed in such a way that the first sense wire is crossed with at least one second sense wire in an insulating mode, wherein areas of the cross points are different. The capacitive touch screen has the advantages of less number of lead wires, simple drive of scanning and low power consumption.

Description

technical field [0001] The invention relates to a capacitive touch screen. Background technique [0002] Capacitive touch screens have been widely used as control devices for computer systems. The traditional capacitive touch screen judges the position coordinates of a finger or conductor touching the capacitive touch screen by measuring the capacitance change at the crossing position of any two sensing lines through the sensing lines arranged in a matrix. [0003] see figure 1 , figure 1 It is a schematic plan view of the prior art capacitive touch screen. The capacitive touch screen 1 includes a plurality of first sensing lines 11 and a plurality of second sensing lines 12 opposite to the plurality of first sensing lines, wherein the first sensing lines 11 and the second sensing lines 12 is separated by an insulating layer (not shown). [0004] When the user's finger approaches the capacitive touch screen 1, the human finger will change the capacitance value between t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
Inventor 陈裕大
Owner INNOCOM TECH SHENZHEN