Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Pressure induction detection device, electronic equipment and touch display screen

A technology of touch display screen and induction detection, which is applied in the direction of electrical digital data processing, instrumentation, and input/output process of data processing, etc. It can solve problems such as insufficient sensitivity, insufficient resolution, and structural processing errors, so as to improve sensitivity , improve the accuracy and sensitivity, reduce the effect of circuit energy consumption

Active Publication Date: 2016-10-12
HUAWEI TECH CO LTD
View PDF3 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the deformation of the detection unit is very small, the converted electrical signal is also very small, and it is easy to be overwhelmed by noise, resulting in insufficient sensitivity and high resolution.
The existing method is to use structural mechanics to amplify to improve the signal-to-noise ratio, but this method is easy to increase the thickness, and this method is easily affected by structural processing errors, making subsequent calibration more troublesome

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
  • Pressure induction detection device, electronic equipment and touch display screen
  • Pressure induction detection device, electronic equipment and touch display screen
  • Pressure induction detection device, electronic equipment and touch display screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0126] In view of the above technical problems, the embodiment of the present invention proposes a pressure-sensing detection device, a touch display screen and electronic equipment, which can effectively improve the sensitivity and accuracy of pressure-sensing detection.

[0127] Figure 4 A schematic diagram of a pressure sensing detection device 200 provided by an embodiment of the present invention is shown, and the pressure sensing detection device 200 includes a pressure sensor array 3000 and a differential amplifier 210 .

[0128] The pressure sensor array 3000 is located in the touch screen, and the pressure in the touch input signal on the touch screen will be transmitted to the pressure sensor array 3000 .

[0129] Specifically, the touch input signal is a signal generated when an external object (such as a user's finger, or a sensor pen, etc.) contacts the touch display screen. The touch input signal includes a pressure signal, that is, a signal in the Z direction ...

Embodiment 2

[0149] Based on the above embodiment, preferably, in this embodiment, the deformation difference of the first half-bridge circuit is the largest in the pressure sensor array 3000, and the deformation difference indicates that the first pressure sensor in the same half-bridge circuit The difference between the deformation of the unit and the deformation of the second pressure sensor unit.

[0150] It should be understood that the deformation difference of the first half-bridge circuit is the largest in the pressure sensor array 3000 , indicating that the row where the first half-bridge circuit is located is the row closest to the touch position in the pressure sensor array 3000 .

[0151] For example, above combined Figure 5 In the example described, when the touch position is M1, the half-bridge circuit 3500 on the row closest to M1 is selected as the first half-bridge circuit.

[0152] Although the half-bridge circuit 3400 is also very close to M1, the half-bridge circuit 3...

Embodiment 3

[0157] Based on the above embodiments, preferably, in this embodiment, the deformation difference of the second half-bridge circuit is the largest among other half-bridge circuits in the pressure sensor array except the first half-bridge circuit.

[0158] According to the working principle of the full-bridge circuit described in Embodiment 1, the purpose is to make the ΔV1 and ΔV2 generated in the full-bridge circuit composed of the first half-bridge circuit and the second half-bridge circuit as large as possible. Embodiment 2 It is described that ΔV1 is the largest, but in this embodiment, ΔV2 is also as large as possible, for example, the largest except for the first half-bridge circuit.

[0159] In the selection of a specific half-bridge circuit, a row of half-bridge circuits that are as close as possible to the contact position is usually selected as the second half-bridge circuit (the closer to the touch position, the greater the passing deformation). The arrangement of e...

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 pressure induction detection device, a touch display screen and electronic equipment. The pressure induction detection device comprises a pressure sensor array located in the touch display screen. Each row of the pressure sensor array forms a half-bridge circuit. When a touch input signal exists on the touch display screen, the first half-bridge circuit and the second half-bridge circuit corresponding to the touch position of the touch input signal in the pressure sensor array output the signal, the deformation quantity generated when a first pressure sensor unit in the first half-bridge circuit is pressed is smaller than the deformation quantity generated when a second pressure sensor in the first half-bridge circuit is pressed, and the deformation quantity generated when a first pressure sensor in the second half-bridge circuit is larger than the deformation quantity generated when a second pressure sensor in the second half-bridge circuit is pressed. Accordingly, the pressure induction detection device can effectively improve the sensitivity and precision of pressure induction detection.

Description

technical field [0001] The present invention relates to the field of electronic equipment, and more specifically, to a pressure-sensing detection device, electronic equipment and a touch display screen. Background technique [0002] As an intuitive and convenient input method for computers or other data processing devices, touch screen input is widely used in various electronic devices, especially mobile electronic devices. At present, touch sensing technologies include capacitive, resistive, electromagnetic, infrared, and ultrasonic. Existing touch sensing technologies can detect single-point or multi-point touch input, but are mainly limited to touch on the XY plane of the touch screen. Location. With the continuous development of touch screen technology, an ideal touch screen is required not only to sense the touch position on the XY plane of the touch screen, but also to sense the touch pressure in the Z-axis direction of the touch screen, thereby adding a degree of fre...

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
IPC IPC(8): G06F3/041
CPCG06F3/0414G06F3/041G06F3/0412G06F3/04144G06F2203/04105
Inventor 柳江吴敬东张泽狮
Owner HUAWEI TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com