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Force-sensing touch screen

A touch screen, sensory technology, applied in the direction of instrument, electrical digital data processing, data processing input/output process, etc., can solve the problems of fear of interference, high cost of electromagnetic touch screen, etc. The effect of reducing measurement difficulty and cost

Inactive Publication Date: 2008-07-30
INFERPOINT SYST SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ultrasonic, photoelectric, and electromagnetic touch screens are expensive, and there are also problems such as fear of interference

Method used

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  • Force-sensing touch screen
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] One of the embodiments of the present invention is as Figure 4Shown: a touch screen and display system 400 . Under the four corners of a transparent panel 410 , four pressure sensing elements 421 , 422 , 423 , 424 are installed, and the display screen 430 is located under the transparent panel 410 . The pressure sensing elements 421, 422, 423, 424 are made to support the transparent panel 410 from four corners. The signal lines of the pressure sensing elements 421, 422, 423, 424 are connected to the measurement circuit 440, the measurement circuit 440 is connected to the control circuit 450, and the control circuit 450 is connected to the display drive circuit 460, and the display drive circuit 460 drives the display screen 430 below the transparent panel 410 . When the touch object 470 (such as a finger or a pen) touches the transparent panel 410 , the force on the pressure sensing elements 421 , 422 , 423 , 424 increases. The measuring circuit 440 measures the rel...

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PUM

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Abstract

The invention discloses a touch screen which comprises a touch panel, a measuring circuit, a control circuit, at least two mechanical sensors. The touch screen is connected with a computer with a display screen or a device with a computer arranged inside. The mechanical sensors are connected with the touch panel via a mechanism. The positions of contact points on the mechanical sensors are determined by the relative values of contact pressures thereon, and can change the display contents of the computer or computer-loaded device. The inventive touch screen is implemented by only measuring the relative value of contact pressure on each mechanical sensor with less measurement difficulty and low cost. The measurement of relative value of contact pressure is insensitive to the change in environmental temperature and humidity and has no interference from the external sound, light and electricity factors. The inventive touch screen is almost a positioning input device without environmental influences.

Description

technical field [0001] The invention relates to a positioning input device, in particular to a sensory touch screen. Background technique [0002] Positioning technology has been widely used in electronic products, resulting in positioning input devices such as touch screens. Current touch screens can be classified into resistive, capacitive, ultrasonic, photoelectric, and electromagnetic types. The resistive touch screen has a double-layer structure, and the touch signal is transmitted through the electrical contact between the upper and lower layers. The outer surface of the upper flexible film and even the conductive layer on the inner surface are easily scratched, and the optical properties of the double-layer structure (transmittance, dispersion , anti-glare, etc.) is not ideal, and when it is used overlapping with the display, it will affect the display effect. The capacitive touch screen transmits the touch signal through the coupling capacitance between the finger ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041
Inventor 陈其良
Owner INFERPOINT SYST SHENZHEN
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