IP Library Granted Patent US 12685472
Granted Patent B2
US 12685472 · App. 18/553,207 · Granted Jul 21, 2026

Light-transmitting electrode structure and smart wearable device

Inventor: Jianjun Wang (Shandong, CN)
Assignee: GOERTEK INC.
A61B5/28A61B5/256H10H20/833
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Quick Facts
Patent No.
US 12685472
App. No.
18/553,207
Granted
Jul 21, 2026
Kind
B2
Abstract

A light-transmitting electrode structure and an smart wearable device are disclosed. The light-transmitting electrode structure is installed on an outer surface of an electronic device, and comprises: a base, a transparent electrode layer, and a conductive connector. The transparent electrode layer covers an outer surface of the base. The conductive connector passes through the base to electrically connect the transparent electrode layer with an ECG circuit in the electronic device, so that the transparent electrode layer forms an ECG electrode. The base is provided with light-transmitting through holes which are aligned with an optical heart rate sensor in the electronic device, so that the transparent electrode layer forms a light-transmitting lens of the optical heart rate sensor.

Claims (30)

1 . A light-transmitting electrode structure installed on an outer surface of an electronic device, comprising: a base, a transparent electrode layer, and a conductive connector;

wherein the transparent electrode layer covers an outer surface of the base;

the conductive connector passes through the base to electrically connect the transparent electrode layer with an ECG circuit in the electronic device, so that the transparent electrode layer forms an ECG electrode; and

the base is provided with light-transmitting through holes which are aligned with an optical heart rate sensor in the electronic device, so that the transparent electrode layer forms a light-transmitting lens of the optical heart rate sensor,

wherein the transparent electrode layer is a non-metallic conductive film, and covers the outer surface of the base by an in-mold labeling process, and

wherein a colored conductive ink is printed between the base and the transparent electrode layer except in regions of the light-transmitting through holes,

the transparent electrode layer provided on the base conducts electricity and is connected to the ECG circuit in the electronic device via the conductive connector to achieve the function of ECG measurement, at the same time, the transparent electrode layer cooperates with the light-transmitting through holes on the base to enable the light for heart rate measurement to pass through without obstacles, and achieves the function of heart rate measurement,

wherein the transparent electrode layer comprises multiple pieces spliced together, and the multiple pieces of the transparent electrode layers are insulatedly separated by blocking ribs, and each piece of the transparent electrode layer is connected to an independent conductive connector respectively, the blocking ribs are integrally formed with the base by injection molding.

2 . The light-transmitting electrode structure according to claim 1 ,

wherein the base is provided with a through hole for electrical connection, the conductive connector is conductive foam, and the conductive foam passes through the through hole for electrical connection to electrically connect the transparent electrode layer with the ECG circuit in the electronic device;

or, the base is provided with a through groove, the conductive connector is elastic conductive adhesive, and the elastic conductive adhesive is poured into the through groove to electrically connect the transparent electrode layer with the ECG circuit in the electronic device.

3 . The light-transmitting electrode structure according to claim 1 , wherein the base is provided with charging pins which are connected to a charging circuit in the electronic device, and the transparent electrode layer is provided with charging holes for exposing the charging pins.

4 . The light-transmitting electrode structure according to claim 1 , wherein the base is made of a plastic material.

5 . A smart wearable device, comprising an ECG circuit and an optical heart rate sensor, a casing of the smart wearable device comprises a light-transmitting electrode structure,

wherein the light-transmitting electrode structure installed on an outer surface of the smart wearable device, and comprises: a base, a transparent electrode layer, and a conductive connector;

the transparent electrode layer covers an outer surface of the base;

the conductive connector passes through the base to electrically connect the transparent electrode layer with an ECG circuit in the electronic device, so that the transparent electrode layer forms an ECG electrode; and

the base is provided with light-transmitting through holes which are aligned with an optical heart rate sensor in the electronic device, so that the transparent electrode layer forms a light-transmitting lens of the optical heart rate sensor,

the transparent electrode layer is a non-metallic conductive film, and covers the outer surface of the base by an in-mold labeling process,

a colored conductive ink is printed between the base and the transparent electrode layer except in regions of the light-transmitting through holes, the transparent electrode layer provided on the base conducts electricity and is connected to the ECG circuit in the electronic device via the conductive connector to achieve the function of ECG measurement, at the same time, the transparent electrode layer cooperates with the light-transmitting through holes on the base to enable the light for heart rate measurement to pass through without obstacles, and achieves the function of heart rate measurement,

wherein the transparent electrode layer comprises multiple pieces spliced together, and the multiple pieces of the transparent electrode layers are insulatedly separated by blocking ribs, and each piece of the transparent electrode layer is connected to an independent conductive connector respectively, the blocking ribs are integrally formed with the base by injection molding.

6 . The smart wearable device according to claim 5 , wherein the smart wearable device is a smartwatch, and the light-transmitting electrode structure is disposed on a side of the smartwatch that contacts the wrist.

7 . The smart wearable device according to claim 5 , wherein the light-transmitting electrode structure is sealedly and adhesively bonded to the smart wearable device by a waterproof adhesive.

8 . The smart wearable device according to claim 5 , wherein the transparent electrode layer comprises an integral piece or multiple pieces spliced together, and the multiple pieces of the transparent electrode layers are insulatedly separated by blocking ribs, and each piece of the transparent electrode layer is connected to an independent conductive connector respectively.

9 . The smart wearable device according to claim 5 , wherein the base is provided with a through hole for electrical connection, the conductive connector is conductive foam, and the conductive foam passes through the through hole for electrical connection to electrically connect the transparent electrode layer with the ECG circuit in the electronic device;

or, the base is provided with a through groove, the conductive connector is elastic conductive adhesive, and the elastic conductive adhesive is poured into the through groove to electrically connect the transparent electrode layer with the ECG circuit in the electronic device.

10 . The smart wearable device according to claim 5 , wherein the base is provided with charging pins which are connected to a charging circuit in the electronic device, and the transparent electrode layer is provided with charging holes for exposing the charging pins.

11 . The smart wearable device according to claim 5 , wherein the base is made of a plastic material.

12 . The smart wearable device according to claim 8 , wherein the base is provided with a through hole for electrical connection, the conductive connector is conductive foam, and the conductive foam passes through the through hole for electrical connection to electrically connect the transparent electrode layer with the ECG circuit in the electronic device;

or, the base is provided with a through groove, the conductive connector is elastic conductive adhesive, and the elastic conductive adhesive is poured into the through groove to electrically connect the transparent electrode layer with the ECG circuit in the electronic device.