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Pressure sensing circuit board and terminal

A technology of circuit boards and terminals, applied in circuits, electric switches, electrical components, etc., can solve problems such as poor waterproof and anti-static discharge performance, inability to quantify pressure, and large thickness of light touch switches

Inactive Publication Date: 2018-10-16
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present invention provides a pressure-sensitive circuit board and terminal to solve the problem of appearance integrity, waterproof and anti-static discharge caused by the large thickness of the light touch switch in the prior art, the inability to quantify the pressure, and the need to open holes on the button panel. poor performance problem

Method used

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  • Pressure sensing circuit board and terminal

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Experimental program
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Effect test

Embodiment 1

[0035] Embodiment 1: The material of the sensing element 3 is a material having a Hall effect.

[0036] Specifically, the sensing element 3 is made of a material having a Hall effect. Preferably, the outer surface of the inductive element 3 made of a material having a Hall effect does not protrude from the outer surface of the circuit part, such as: the inductive element 3 and the circuit part arranged on the first surface of the insulating plate 1 are in a plane, In order to avoid increasing the overall thickness of the pressure-sensitive circuit board.

[0037] Preferably, the sensing element 3 can be made of graphene or semiconductor materials, such as germanium, silicon, gallium arsenide, indium arsenide, indium antimonide, with a thickness of about 20 μm. It has the characteristics of high mobility (mobility>2900cm2 / V·s), high Hall coefficient and good deformation recovery, and thin thickness to improve the overall sensitivity.

[0038] The depth of the recess 11 on the...

Embodiment 2

[0052] Embodiment 2: The material of the inductive element 3 is a material with a giant magnetic effect.

[0053] The specific inductive element 3 is made of materials with giant magnetic effect. Preferably, the outer surface of the inductive element 3 made of a material having a giant magnetic effect does not protrude from the outer surface of the circuit part, such as: the inductive element 3 and the circuit part arranged on the first surface of the insulating plate 1 are in a plane, In order to avoid increasing the overall thickness of the pressure-sensitive circuit board.

[0054] Such as Figure 5 , showing an example of an inductive element with giant magnetic effect.

[0055] Wherein, the sensing element 3 includes:

[0056] The first electrode 31 disposed at the first end of the sensing element 3 is connected to one of the positive pole and the negative pole of the power supply. Wherein, the power supply includes but not limited to: a power supply on the pressure-s...

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Abstract

The invention discloses a pressure sensing circuit board and a terminal. The pressure sensing circuit board comprises an insulating plate, a sensing element with an induced magnetic field change function and a magnetic reinforcing plate, wherein the sensing element is arranged on the first surface of the insulating plate; the magnetic reinforcing plate is arranged on the second surface of the insulating plate; the insulating plate, inside a specific region on the first surface, is provided with a concave part; and the specific region is the projection region, on the first surface, of the sensing element. The thickness of the pressure sensing circuit board can be avoided from being increased, and the pressure further can be quantified.

Description

technical field [0001] The invention relates to the technical field of electronic products, in particular to a pressure-sensitive circuit board and a terminal. Background technique [0002] Buttons are one of the basic configurations of the terminal, such as volume buttons, power buttons, virtual buttons, etc. The buttons realize the corresponding functions by pressing the button panel, such as: volume increase and decrease functions, screen off function, screen bright function, etc. At present, the button of the terminal generally adopts a tact switch, and its principle is to use a metal shrapnel button to complete the switch between the on-state and the off-state of the switch. When the tact switch is pressed, the shrapnel is deformed by the elastic force and touches the solder piece downward, so that the two sets of pins of the switch are conducted, and the circuit is in a conducting state. When the external force is withdrawn, the shrapnel elastically recovers and sepa...

Claims

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Application Information

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IPC IPC(8): H01H36/00
CPCH01H36/0073H01H2036/0093
Inventor 易小军
Owner VIVO MOBILE COMM CO LTD
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