Touch module

Patent metadata

Field	Value
Publication number	US-2025362778-A1
Application number	US-202519092562-A
Country	US
Kind code	A1
Filing date	Mar 27, 2025
Priority date	May 23, 2024
Publication date	Nov 27, 2025
Grant date	—

Abstract

A touch module includes a base plate, a touch plate, an elastic structure and a pressure sensor. The elastic structure includes an elastic element. The pressure sensor includes a sensing element and a sensing part. The touch panel is located over the base plate. The elastic element of the elastic structure is disposed on the base plate and covered by the touch plate. The pressure sensor is arranged between the base plate and the touch plate. The sensing element of the pressure sensor is installed on the touch plate and aligned with the elastic element. The sensing part is disposed on the base plate and located at the periphery of the elastic element. When the touch plate is pressed, the elastic element is moved, and a distance between the sensing element and the sensing part is subjected to a change. Consequently, an electric signal is generated.

First claim

What is claimed is:

1 . A touch module, comprising:
a base plate having a top surface; a touch plate located over the base plate and covering the base plate, wherein a bottom surface of the touch plate and the top surface of the base plate are parallel to and aligned with each other; an elastic structure disposed on the top surface of the base plate, and comprising an elastic element and a separation element, wherein the separation element is disposed on the elastic element and contacted with the bottom surface of the touch plate; and a pressure sensor arranged between the base plate and the touch plate, aligned with the elastic element, and comprising a sensing element and a sensing part, wherein the sensing element is installed on the bottom surface of the touch plate and aligned with the elastic element, and the sensing part is located beside the elastic element of the elastic structure, wherein when the touch plate is pressed, the elastic element of the elastic structure is moved, and a distance between the sensing element and the sensing part is subjected to a change, so that an electric signal is generated.

2 . The touch module according to claim 1 , wherein the elastic element has a force-bearing surface and a peripheral surface, wherein the force-bearing surface and the peripheral surface are formed on the top surface of the base plate and are parallel to the top surface of the base plate, the peripheral surface is arranged around the force-bearing surface, the force-bearing surface is movable relative to the peripheral surface of the elastic element and the top surface of the base plate, the separation element is disposed on the force-bearing surface of the elastic element, and the separation element is contacted with the bottom surface of the touch plate.

3 . The touch module according to claim 2 , wherein the sensing element of the pressure sensor is disposed on the bottom surface of the touch plate and aligned with the peripheral surface of the elastic element, and the sensing part of the pressure sensor is located in the peripheral surface of the elastic element.

4 . The touch module according to claim 2 , wherein the sensing element of the pressure sensor has a sensing surface, the sensing surface of the sensing element is formed on the bottom surface of the touch plate and is parallel to the bottom surface of the touch plate, and the sensing surface is located over the elastic element of the elastic structure and aligned with the peripheral surface of the elastic element.

5 . The touch module according to claim 4 , wherein the sensing part of the pressure sensor has a sensing range plane, wherein the sensing range plane of the sensing part is formed on the top surface of the base plate and located in the peripheral surface of the elastic element, and the sensing range plane is aligned with the sensing surface of the sensing element.

6 . The touch module according to claim 5 , wherein an area of the sensing range plane of the sensing part corresponds to an area of the sensing surface of the sensing element.

7 . The touch module according to claim 1 , wherein the elastic structure further comprises a groove, and the groove is formed in the base plate, wherein the groove is located beside the elastic element of the elastic structure and arranged between the sensing part of the pressure sensor of the pressure sensor and the elastic element of the elastic structure, and the sensing part of the pressure sensor and the elastic element of the elastic structure are separated from each other by the groove.

8 . A touch module, comprising:
a base plate having a top surface; a touch plate located over the base plate and covering the base plate, wherein a bottom surface of the touch plate and the top surface of the base plate are parallel to and aligned with each other; an elastic structure disposed on the top surface of the base plate, and comprising a first elastic element and a second elastic element; a first pressure sensor arranged between the base plate and the touch plate, aligned with the first elastic element of the elastic structure, and comprising a first sensing element and a first sensing part, wherein the first sensing element is installed on the bottom surface of the touch plate and aligned with the first elastic element, and the first sensing part is located beside the first elastic element; and a second pressure sensor arranged between the base plate and the touch plate, separated from the first pressure sensor, aligned with the second elastic element of the elastic structure, and comprising a second sensing element and a second sensing part, wherein the second sensing element is installed on the bottom surface of the touch plate and aligned with the second elastic element, and the second sensing part is located beside the second elastic element, wherein when the touch plate is pressed, the first elastic element and the second elastic element of the elastic structure are moved, a distance between the first sensing element and the first sensing part is subjected to a change, and a distance between the second sensing element and the second sensing part is subjected to a change, so that a first electric signal and a second electric signal are generated.

9 . The touch module according to claim 8 , wherein when the touch plate is pressed and a pressed position of the touch plate is close to the first pressure sensor, the distance between the first sensing element and the first sensing part of the first pressure sensor is decreased, and the distance between the second sensing element and the second sensing part of the second pressure sensor is increased, so that an intensity of the first electric signal is higher than an intensity of the second electric signal, wherein when the pressed position of the touch plate is close to the second pressure sensor, the distance between the first sensing element and the first sensing part of the first pressure sensor is increased, and the distance between the second sensing element and the second sensing part of the second pressure sensor is decreased, so that the intensity of the first electric signal is lower than the intensity of the second electric signal.

10 . The touch module according to claim 8 , wherein the first elastic element comprises a first separation element, and the second elastic element comprises a second separation element, wherein the first separation element is disposed on the first elastic element and contacted with the bottom surface of the touch plate, and the second separation element is disposed on the second elastic element and contacted with the bottom surface of the touch plate.

11 . The touch module according to claim 10 , wherein the first elastic element of the elastic structure has a first force-bearing surface and a first peripheral surface, and the second elastic element of the elastic structure has a second force-bearing surface and a second peripheral surface, wherein the first force-bearing surface and the second force-bearing surface are formed on the top surface of the base plate and are parallel to the top surface of the base plate, the first force-bearing surface and the second force-bearing surface are movable relative to the top surface of the base plate, the first peripheral surface is located beside the first force-bearing surface, the second peripheral surface is located beside the second force-bearing surface, the first separation element is disposed on the first force-bearing surface, and the second separation element is disposed on the second force-bearing surface.

12 . The touch module according to claim 11 , wherein the first sensing element of the first pressur

Assignees

• Primax Electronics Ltd

Inventors

• Huang Wei-Chiang
• Chan Wei-Ping
• Kuan Tse-Ping
• Chiu Sian-Yi
• Huang Chih-Wei

Classifications

• G06F2203/04105

  Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position · CPC title

• G06F3/0447 Primary

  Position sensing using the local deformation of sensor cells · CPC title

• G06F3/0418

  for error correction or compensation, e.g. based on parallax, calibration or alignment · CPC title

• G06F3/0414 Primary

  using force sensing means to determine a position · CPC title