Force-sensing structure and touch module

TWI942463BActive Publication Date: 2026-10-11DARFON ELECTRONICS CORP
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Patent Information

Application Number
TW114133466
Authority / Receiving Office
TW · TW
Patent Type
Patents
Current Assignee / Owner
Filing Date
2025-09-02
Publication Date
2026-10-11
Estimated Expiration
2045-09-01

Smart Images

  • Figure TWG2TB001915640_001
    Figure TWG2TB001915640_001
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    Figure TWG2TB001915640_002
  • Figure TWG2TB001915640_003
    Figure TWG2TB001915640_003
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Abstract

A force sensing structure is disclosed for use in a touch module. The force sensing structure includes two fixed portions, two force transmitting portions connected to and located between the two fixed portions, and a sensing portion located between the two force transmitting portions. Each force transmitting portion is connected to the sensing portion via two curved arms. The two force transmitting portions support a touchpad of the touch module and receive forces applied to the touchpad; the forces received by the force transmitting portions are transmitted to the sensing portion via the corresponding two curved arms.
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Claims

1. A force sensing structure for use in a touch module, the force sensing structure comprising: a first fixing portion; a first force transmitting portion connected to the first fixing portion via a plurality of first connecting portions; two first bending arms; a sensing portion connected to the sensing portion via the two first bending arms; two second bending arms; a second force transmitting portion connected to the sensing portion via the two second bending arms; and a second fixing portion connected to the second fixing portion via a plurality of second connecting portions; wherein... The first fixing part, the first force transmission part, the two first bending arms, the sensing part, the two second bending arms, the second force transmission part and the second fixing part are arranged sequentially along a first direction; wherein, the first force transmission part and the second force transmission part support one of the touch panels of the touch module and receive the force applied to the touch panel.

2. The force sensing structure as described in claim 1, wherein the force sensing structure has a structural symmetry axis parallel to the first direction.

3. The force sensing structure as described in claim 2, wherein the force sensing structure has another structural axis of symmetry parallel to one of the second directions perpendicular to the first direction.

4. The force sensing structure as described in claim 1, wherein the two first bending arms are connected to opposite sides of the first force transmission portion in a second direction, the second direction being perpendicular to the first direction.

5. The force sensing structure as described in claim 1, wherein the sensing part includes two connecting parts and two deformation parts, the two connecting parts are disposed opposite to each other in the first direction and are respectively connected to the two first curved arms and the two second curved arms, and the two deformation parts are disposed opposite to each other in a second direction and are connected to the two connecting parts, the second direction being perpendicular to the first direction.

6. The force sensing structure as described in claim 5, wherein the deformable portion includes a bending portion.

7. The force sensing structure as described in claim 1, wherein the sensing unit includes a force sensor.

8. The force sensing structure as described in claim 1, wherein two of the plurality of first connecting portions are connected to opposite sides of the first force transmission portion in a second direction, the second direction being perpendicular to the first direction.

9. The force sensing structure as described in claim 1, wherein the force sensing structure as a whole has a longitudinal axis parallel to the first direction.

10. The force sensing structure as claimed in claim 9, wherein the maximum length of the first force transmission portion in the first direction and the maximum length of the second force transmission portion in the first direction are both less than the minimum distance between the first force transmission portion and the second force transmission portion in the first direction.

11. The force sensing structure as described in claim 1 further includes an elastic body, wherein the elastic body is fixed to the first force transmission portion, the first force transmission portion supporting the touch panel and receiving forces applied to the touch panel via the elastic body.

12. The force sensing structure as described in claim 11, wherein the elastomer is elongated and extends perpendicular to the first direction.

13. The force sensing structure as described in claim 11, wherein the elastomer extends to opposite sides of the first force transmission portion in a second direction, the second direction being perpendicular to the first direction.

14. A touch module comprising: a touchpad; and a force sensing structure as described in any one of claims 1 to 13, the force sensing structure supporting the touchpad via the first force transmission portion and the second force transmission portion and receiving a force applied to the touchpad.

15. The touch module as described in claim 14, wherein the maximum length of the force sensing structure in the first direction is greater than the maximum length of the touchpad in the first direction.

Citation Information

Patent Citations

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    CN120540536A

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    US20210263556A1

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