PRESSURE SENSING APPARATUS AND ELECTRONIC DEVICE HAVING SAID PRESSURE SENSING APPARATUS

• US 20180164938A1
• Filed: 02/05/2016
• Published: 06/14/2018
• Est. Priority Date: 06/05/2015
• Status: Active Grant

• Current Assignee: Shenzhen New Degree Technology Co., Ltd.
• Original Assignee: Shenzhen New Degree Technology Co., Ltd.
• Inventors: LI, Hao
• Granted Patent: US 10,338,719 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 21/32 using biometric data, e.g. fingerprints, iris scans or voiceprints
• CPC Class Codes: G06F 2203/04105 Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
• CPC Class Codes: G06F 3/02 Input arrangements using manually operated switches, e.g. using keyboards or dials
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06V 40/12 Fingerprints or palmprints
• CPC Class Codes: G06V 40/13 Sensors therefor
• CPC Class Codes: H03K 17/96 Touch switches specially adapted for electronic time-pieces with no moving parts G04G21/08
• CPC Class Codes: H03K 17/97 using a magnetic movable element
• CPC Class Codes: H03K 17/975 using a capacitive movable element

Abstract

Pressure applied to the surface of a first panel is measured by a simple beam-type pressure-sensing assembly, said pressure-sensing assembly being in contact with the first panel and a second panel by means of first supports and a second support. When a user applies pressure to a pressing area, the pressure is transferred to an elastic bearing plate; the pressure is then evenly concentrated on the elastic bearing plate; having pressure applied thereto, the elastic bearing plate is then deformed; a pressure sensor detects the deformation of the elastic bearing plate, and then the pressure sensor outputs a pressure signal to a pressure-sensing detection circuit to analyze, process, and then output to a processor for execution of an operation.

Claims

1. A pressure sensing apparatus comprising:

a first panel;

a second panel spaced apart from the first panel, wherein an accommodation space is formed between the first panel and the second panel;

a pressure sensing assembly placed in the accommodation space, wherein, the pressure sensing assembly comprises an elastic bearing plate and a pressure sensor, the elastic bearing plate and the first panel abut against each other along a thickness direction of the first panel, the pressure sensing assembly is provided with a first mounting surface and a second mounting surface opposite to each other along the thickness direction of the first panel, the first mounting surface is provided thereon with a first support, the second mounting surface is provided thereon with two second supports arranged to be spaced apart from each other, the first support is disposed in a region between the two second supports;

the pressure sensing assembly, the first support and the two second supports constitute a simple beam structure, the pressure sensing assembly abuts against and between the first panel and the second panel via the first support and the second supports, and the first panel forms a pressing area in a region between the two second supports;

a pressure-sensing detection circuit electrically connected with the pressure sensor and configured for receiving pressing signals detected by the pressure sensor; and

a processor electrically connected with the pressure-sensing detection circuit and configured for outputting an operation signal when receiving the pressure signal from the pressure-sensing detection circuit.

2. The pressure sensing apparatus according to claim 1, wherein, the first mounting surface is formed on the pressure sensor and is arranged to be opposite to the second panel, the second mounting surface is formed on the elastic bearing plate and is arranged to be opposite to the first panel;

the first support is connected between the second panel and the pressure sensor, and the two second supports are connected between the first panel and the elastic bearing plate.

3. The pressure sensing apparatus according to claim 1, wherein, the first mounting surface is formed on the elastic bearing plate and is arranged to be opposite to the second panel, the second mounting surface is formed on the pressure sensor and is arranged to be opposite to the first panel, the first support is connected between the second panel and the elastic bearing plate, and the two second supports are connected between the first panel and the pressure sensor.

4. The pressure sensing apparatus according to claim 1, wherein, the first mounting surface is formed on the elastic bearing plate and is arranged to be opposite to the first panel, the second mounting surface is formed on the pressure sensor and is arranged to be opposite to the second panel, the first support is connected between the first panel and the elastic bearing plate, and the two supports are connected between the second panel and the pressure sensor.

5. The pressure sensing apparatus according to claim 1, wherein, the first mounting surface is formed on the pressure sensor and is arranged to be opposite to the first panel, the second mounting surface is formed on the elastic bearing plate and is arranged to be opposite to the second panel, the first support is connected between the first panel and the pressure sensor, and the two supports are connected between the second panel and the elastic bearing plate.

6. The pressure sensing apparatus according to claim 1, wherein, the first mounting surface is provided with a first adhesive body, and the first adhesive body forms the first support;

the second mounting surface is provided with two second adhesive bodies, and the two second adhesive bodies form the two second supports, respectively.

7. The pressure sensing apparatus according to claim 1, wherein, the pressure sensing assembly further comprises a third adhesive body configured for adhering the elastic bearing plate with the pressure sensor.

8. The pressure sensing apparatus according to claim 1, wherein, the first panel is an intermediate frame, a front shell, a back shell, a touch screen, a display screen, or an integral display-touch screen, the pressing area of the intermediate frame, the front shell, or the back shell has a thickness between 0.33 mm and 5 mm,

and

the pressing area of the touch screen, the display screen, or the integral display-touch screen has a thickness between 0.1 mm and 5 mm.

9. The pressure sensing apparatus according to claim 1, wherein, the first panel is divided into a first structure frame of an electronic device and a second structure frame of the electronic device, the first structure frame of the electronic device is provided thereon with a mounting hole, the second structural frame of the electronic device is a fingerprint identification module having an information collecting button, the information collecting button is inserted into the mounting hole and the pressing area is located on the information collecting button, the second panel is arranged to be spaced apart from the fingerprint identification module, the pressure sensing assembly is contacted between the fingerprint identification module and the second panel through the first support and the second supports.

10. The pressure sensing apparatus according to claim 1, wherein, the first panel is a touch screen, a display screen or an integral display-touch screen, at least one of the pressure sensing assembly is distributed on an inner side surface of the first panel, and the pressure sensor in each pressure sensing assembly is electrically connected with the processor through the pressure-sensing detection circuit.

11. The pressure sensing apparatus according to claim 1, wherein, a total thickness of the pressure sensing assembly is larger than or equal to the gap between the second panel and the first panel.

12. The pressure sensing apparatus according to claim 1, wherein,

the first panel and the second panel are mechanically connected to each other or in an integrally formed structure.

13. An electronic device comprising the pressure sensing apparatus according to claim 1.

14. The electronic device according to claim 13, wherein, the electronic device has a front side wall, a rear side wall arranged to be spaced apart from the front side wall, and a side frame disposed between the front side wall and the rear side wall;

the pressing area is located on the front side wall, and the pressure sensing assembly is disposed on an inner side of the front side wall;

the pressing area is located on the rear side wall, and the pressure sensing assembly is disposed on an inner side surface of the rear side wall;

or

the pressing area is located on the side frame, and the pressure sensing assembly is disposed on an inner side surface of the side frame.