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CN-122028296-A - Wear and detect flexible circuit board and wearing equipment

CN122028296ACN 122028296 ACN122028296 ACN 122028296ACN-122028296-A

Abstract

The embodiment of the invention discloses a wearing detection flexible circuit board and wearing equipment, wherein the wearing detection flexible circuit board comprises a detection channel layer, a reference channel layer, a grounding layer and a heat dissipation layer which are sequentially stacked, A first insulating medium layer is arranged between the detection channel layer and the reference channel layer, and a second insulating medium layer is arranged between the reference channel layer and the grounding layer. The wearing detection flexible circuit board can reduce the influence on wearing detection temperature coefficient when the temperature of the main control board changes by arranging the ground layer, and improves the wearing detection stability.

Inventors

  • JIANG PENG
  • YANG LEI

Assignees

  • 上海千问智联人工智能科技有限责任公司

Dates

Publication Date
20260512
Application Date
20260206

Claims (11)

  1. 1. The utility model provides a wear and detect flexible circuit board, its characterized in that, flexible circuit board (100) is including piling up detection passageway layer (1), reference passageway layer (2), ground plane (3) and heat dissipation layer (4) that set up in proper order, detection passageway layer (1) with be provided with first insulating medium layer (5) between reference passageway layer (2), reference passageway layer (2) with be provided with second insulating medium layer (6) between ground plane (3).
  2. 2. The flexible circuit board according to claim 1, characterized in that the flexible circuit board (100) further comprises a shielding layer (7) stacked between the reference channel layer (2) and the ground layer (3), a third insulating medium layer (8) being arranged between the shielding layer (7) and the ground layer (3), the second insulating medium layer (6) being arranged between the reference channel layer (2) and the shielding layer (7).
  3. 3. The flexible circuit board according to claim 1 or 2, characterized in that the flexible circuit board (100) further comprises a backing layer (9), the ground layer (3) being fixed to the heat dissipation layer (4) by means of the backing layer (9).
  4. 4. The flexible circuit board according to claim 2, characterized in that the circumferential edge dimension of the detection channel layer (1) and the circumferential edge dimension of the reference channel layer (2) are the same, the circumferential edge dimension of the ground layer (3) being at least a first predetermined dimension larger than the circumferential edge dimension of the detection channel layer (1).
  5. 5. The flexible circuit board according to claim 4, characterized in that the peripheral edge dimension of the detection channel layer (1), the peripheral edge dimension of the shielding layer (7) and the peripheral edge dimension of the ground layer (3) are sequentially increased, the peripheral edge dimension of the shielding layer (7) being smaller than the peripheral edge dimension of the ground layer (3) by a second predetermined dimension.
  6. 6. The flexible circuit board according to claim 1, characterized in that the ground layer (3) and the heat dissipation layer (4) are copper-clad graphite sheets.
  7. 7. Flexible circuit board according to claim 1 or 2, characterized in that the heat dissipation layer (4) is a graphite sheet.
  8. 8. The flexible circuit board according to claim 1, characterized in that the detection channel layer (1) comprises a plurality of spaced apart metal contacts and the reference channel layer (2) comprises a plurality of spaced apart metal contacts.
  9. 9. A wearable device, characterized in that the wearable device (200) comprises: An apparatus body (201); The main control board (202) is arranged in the equipment body (201); The flexible circuit board (100) according to any one of claims 1-8, being mounted in the device body (201) and the detection channel layer (1) being located on a side of the device body (201) close to a human body, one side of the heat dissipation layer (4) extending over the main control board (202), the flexible circuit board (100) being electrically connected with the main control board (202).
  10. 10. The wearable device according to claim 9, characterized in that the heat dissipation layer (4) is connected with the main control board (202) through an adhesive layer (203).
  11. 11. The wearable device according to claim 9, characterized in that the wearable device (200) further comprises a detection chip integrated on the main control board (202), the detection chip being electrically connected with the main control board (202) and the flexible circuit board (100), respectively.

Description

Wear and detect flexible circuit board and wearing equipment Technical Field The invention relates to the technical field of wearing detection, in particular to a wearing detection flexible circuit board and wearing equipment. Background With the development of intelligent glasses technology, people pursue more and more fashionable, light, thin and comfortable glasses. In order to make the temples as thin as possible, a main control board with a large area is generally placed at the rear end of the temples, and the wearing detection area is arranged at a position close to the ears, which results in too close distance between the heating area of the main control board and the wearing detection area. Meanwhile, the existing wearing detection mode is generally to detect the flexible circuit board comprising the detection channel layer and the reference channel layer, so that the influence of the temperature of the main control board on the flexible circuit board is reduced, and the heating area of the main control board and the wearing detection area are covered with the graphite sheet to make the temperature of the whole main control board and the whole flexible circuit board uniform. However, since the graphite sheet is a conductor and is in a suspended ungrounded state, the graphite sheet is directly placed beside the flexible circuit board to interfere with an electric field, so that the metal near the main control board causes unstable wearing detection temperature coefficient between the detection channel layer and the reference channel layer in a high-low temperature environment, and finally causes wearing detection failure. Disclosure of Invention In view of the above, the embodiment of the invention provides a wearing detection flexible circuit board and wearing equipment, which can reduce the influence on the wearing detection temperature coefficient when the temperature of a main control board changes and improve the wearing detection stability. In a first aspect, an embodiment of the present invention provides a wearing detection flexible circuit board, where the flexible circuit board includes a detection channel layer, a reference channel layer, a ground layer, and a heat dissipation layer that are stacked in order, a first insulating medium layer is disposed between the detection channel layer and the reference channel layer, and a second insulating medium layer is disposed between the reference channel layer and the ground layer. Optionally, the flexible circuit board further includes a shielding layer stacked between the reference channel layer and the ground layer, a third insulating dielectric layer is disposed between the shielding layer and the ground layer, and the second insulating dielectric layer is disposed between the reference channel layer and the shielding layer. Optionally, the flexible circuit board further comprises a back adhesive layer, and the ground layer is fixed on the heat dissipation layer through the back adhesive layer. Optionally, the circumferential edge dimension of the detection channel layer and the circumferential edge dimension of the reference channel layer are the same, and the circumferential edge dimension of the ground layer is at least a first predetermined dimension greater than the circumferential edge dimension of the detection channel layer. Optionally, the circumferential edge dimension of the detection channel layer, the circumferential edge dimension of the shielding layer, and the circumferential edge dimension of the ground layer sequentially increase, and the circumferential edge dimension of the shielding layer is smaller than the circumferential edge dimension of the ground layer by a second predetermined dimension. Optionally, the grounding layer and the heat dissipation layer are copper-clad graphite sheets. Optionally, the heat dissipation layer is a graphite sheet. Optionally, the detection channel layer includes a plurality of metal contacts arranged at intervals, and the reference channel layer includes a plurality of metal contacts arranged at intervals. In a second aspect, an embodiment of the present invention provides a wearable device, including: An equipment body; The main control board is arranged in the equipment body; The flexible circuit board according to the first aspect, the flexible circuit board is installed in the device body, the detection channel layer is located on one side of the device body close to the human body, one side of the heat dissipation layer extends to cover above the main control board, and the flexible circuit board is electrically connected with the main control board. Optionally, the heat dissipation layer is connected with the main control board through an adhesive layer. Optionally, the wearable device further includes a detection chip integrated on the main control board, and the detection chip is electrically connected with the main control board and the flexible circuit board respectively. The em