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High-precision mechanical induction plate

A high-precision, sensing board technology, applied in the field of mechanical sensing boards, can solve problems such as changes in the resistance value of the strain resistance, difficult pressure detection, weak signals, etc.

Inactive Publication Date: 2016-12-07
SHANTOU GOWORLD DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, because the bending degree of the substrate is generally very small, the resistance value of the strain resistor changes very little, and its signal is very weak, which is often affected by other factors, such as temperature drift and other factors.
Therefore, it is difficult to achieve more accurate pressure detection in this pressing force sensing device that uses strain resistance for pressure detection.

Method used

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  • High-precision mechanical induction plate
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 , 2 As shown, this high-precision mechanical sensing plate includes a first substrate 1, a second substrate 2 and a support plate 3 arranged in sequence from outside to inside, the second substrate 2 is provided with a pressure sensing element, the first substrate 1 and the The first soft layer 4 is arranged between the second substrate 2, and the second soft layer 5 is arranged between the second substrate 2 and the support plate 3; the pressure sensing element is capable of detecting according to the local bending deformation of the second substrate 2 To the strain resistance or strain resistance group 6 of the local pressing force applied on the outside of the first substrate 1; a plurality of hard points 7 are arranged in the first soft layer 4, and the hard points 7 correspond to the pressure sensing elements. The point 7 is arranged in the middle of the strain resistance or the strain resistance group 5 , and the hard point 7 is made of a materia...

Embodiment 2

[0032] Such as Figure 5 , 6 As shown, this high-precision mechanical sensing plate includes a first substrate 1, a second substrate 2 and a support plate 3 arranged in sequence from outside to inside, the second substrate 2 is provided with a pressure sensing element, the first substrate 1 and the The first soft layer 4 is arranged between the second substrate 2, and the second soft layer 5 is arranged between the second substrate 2 and the support plate 3; the pressure sensing element is capable of detecting according to the local bending deformation of the second substrate 2 To the strain resistance or strain resistance group 6 of the local pressing force applied on the outside of the first substrate 1; a plurality of hard points 7 are arranged in the second soft layer 5, and the hard points 7 correspond to the pressure sensing elements. The point 7 is arranged in the middle of the strain resistance or strain resistance group 6, and the hard point 7 is made of a material w...

Embodiment 3

[0034] Such as Figure 7 , 8 As shown, this high-precision mechanical sensing plate includes a first substrate 1, a second substrate 2 and a support plate 3 arranged in sequence from outside to inside, the second substrate 2 is provided with a pressure sensing element, the first substrate 1 and the The first soft layer 4 is arranged between the second substrate 2, and the second soft layer 5 is arranged between the second substrate 2 and the support plate 3; the pressure sensing element is capable of detecting according to the local bending deformation of the second substrate 2 The strain resistance or the strain resistance group 6 applied to the local pressing force on the outside of the first substrate 1; the second soft layer 5 is provided with a hard ring 8, and the hard ring 8 corresponds to the pressure sensing element, and the hard ring 8 Arranged around the strain resistance or the strain resistance group 6 , the hard ring 8 is made of a material with higher hardness ...

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Abstract

The invention relates to a high-precision pressing force induction plate. Hard points, hard rings or hard strips are padded in a first soft layer or a second soft layer, and the hard points, the hard rings or the hard strips are arranged at edge positions of a strain induction element or a first base plate and a second base plate; when a finger presses the outer side of the first base plate, the first base plate can be used for collecting pressing force of the finger and the pressing force is concentrated to the specific positions (including the rear edge of the center of a strain resistor and a resistor group, and the edges of the first base plate and the second base plate) of the second base plate, so that the bending of the strain induction element is increased and the change of a resistance value of the strain resistor (or the resistor group) changed based on the bending of the second base plate is relatively great; and signals are relatively strong and the high-precision pressing force induction plat is relatively sensitive.

Description

technical field [0001] The invention relates to a mechanical induction board, in particular to a high-precision mechanical induction board. Background technique [0002] The pressing force sensing device can be arranged in the flat panel display device to detect the pressing force when the finger presses the graphics displayed on the flat panel display device, so as to realize an interactive function based on the pressing force of the finger. At present, this kind of pressure sensing device can be realized by using strain resistance. Specifically, the strain resistance can be distributed on a substrate in a two-dimensional manner. Therefore, the local pressing force applied to the outside of the substrate can be detected according to the local bending deformation of the substrate. [0003] However, since the bending degree of the substrate is generally very small, the change of the resistance value of the strain resistor is very small, and its signal is very weak, which is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/045G01L1/22G06F3/044
CPCG06F3/0414G01L1/22G01L1/2206G06F3/0412G06F3/044G06F3/045
Inventor 沈奕吕岳敏杨秋强郑清交朱世健陈绍源张高民
Owner SHANTOU GOWORLD DISPLAY TECH CO LTD