Electronic device having electrode measuring biological signal

Patent metadata

Field	Value
Publication number	US-11666275-B2
Application number	US-202016889309-A
Country	US
Kind code	B2
Filing date	Jun 1, 2020
Priority date	Jul 31, 2019
Publication date	Jun 6, 2023
Grant date	Jun 6, 2023

Abstract

An electronic device is provided. The electronic device includes a housing including a first surface facing a first direction, a second surface facing a second direction opposite to the first surface, and a third surface connecting the first surface and the second surface to form a space in the housing, a display viewable in the first direction through the first surface of the housing, a printed circuit board (PCB) disposed in the space, a glass covering at least a part of the second surface of the housing and including a fourth surface facing the first direction and a fifth surface facing the second direction, a high-hardness member disposed on the fifth surface, a first conductive member disposed between the high-hardness member and the glass, and a second conductive member disposed on the fourth surface and electrically connected to the PCB.

First claim

What is claimed is:

1. An electronic device comprising:
a housing comprising a first surface facing a first direction, a second surface facing a second direction opposite to the first direction, and a third surface connecting the first surface and the second surface to form a space in the housing;
a display viewable in the first direction through the first surface of the housing;
a printed circuit board (PCB) disposed in the space;
a glass configured to cover at least a part of the second surface of the housing and including a fourth surface facing the first direction and a fifth surface facing the second direction;
a high-hardness member disposed under the fifth surface;
a first conductive member disposed between the high-hardness member and the glass; and
a second conductive member disposed over the fourth surface and electrically connected to the PCB.

2. The electronic device of claim 1 ,
wherein the high-hardness member includes at least one of an oxide-based material, a nitride-based material, or a carbide-based material, and
wherein the first conductive member and the second conductive member each include at least one of chromium (Cr), titanium (Ti), gold (Au), silver (Ag), graphene, or carbon nano tube (CNT).

3. The electronic device of claim 1 , wherein the first conductive member has a first thickness of between 1 micrometer (μm) and 100 μm.

4. The electronic device of claim 1 , further comprising:
an adhesive member disposed between the glass and the first conductive member.

5. The electronic device of claim 4 , wherein the adhesive member is formed by depositing or coating an adhesive material on the fifth surface.

6. The electronic device of claim 5 , wherein the adhesive member is formed by depositing or coating silicon dioxide (SiO 2 ) on the fifth surface.

7. The electronic device of claim 4 , wherein the adhesive member increases one or more of bonding energy of a surface of the first conductive member or the fifth surface or adhesion between the first conductive member and the glass.

8. The electronic device of claim 4 , wherein the adhesive member is configured to prevent the first conductive member from being detached from the glass.

9. The electronic device of claim 1 , further comprising:
a light blocking member disposed between the glass and the second conductive member.

10. The electronic device of claim 9 , wherein the light blocking member comprises black carbon.

11. The electronic device of claim 9 , wherein the light blocking member is formed on the fourth surface in a printing method.

12. The electronic device of claim 9 , wherein the light blocking member is configured to prevent recognition of the PCB from outside when viewed in the first direction.

13. The electronic device of claim 1 , further comprising:
an identifier engraved in the high-hardness member to allow at least a part of the first conductive member to be exposed in the high-hardness member,
wherein the second conductive member is configured to not overlap with the identifier in the first direction and in the second direction.

14. The electronic device of claim 13 , wherein the second conductive member has a different area from an area of the first conductive member.

15. The electronic device of claim 13 , further comprising:
a third conductive member configured to connect the second conductive member to the PCB.

16. The electronic device of claim 1 , further comprising:
a connector formed in the first direction from the second conductive member and configured to connect the second conductive member to the PCB.

17. A wearable electronic device comprising:
a housing comprising a first surface facing a first direction, a second surface facing a second direction opposite to the first direction, and a third surface connecting the first surface and the second surface to form a space in the housing;
a display viewable in the first direction through the first surface of the housing;
a printed circuit board (PCB) disposed in the space;
a glass configured to cover at least a part of the second surface of the housing and including a fourth surface facing the first direction and a fifth surface facing the second direction;
a first electrode disposed on the glass and having a first voltage applied thereto;
a second electrode disposed on the glass to be adjacent to the first electrode and having a ground voltage applied thereto; and
a third electrode having a second voltage applied thereto having a polarity opposite to a polarity of the first voltage with regard to the ground voltage,
wherein the first electrode includes:
a high-hardness member disposed under the fifth surface,
a first conductive member disposed between the high-hardness member and the glass, and
a second conductive member disposed over the fourth surface and electrically connected to the PCB.

18. The wearable electronic device of claim 17 ,
wherein the first electrode and the second electrode each have a resistance of between 1 ohm (Ω) and 1 kiloohm (kΩ), and
wherein a resistance between the first electrode and the second electrode is between 1 gigaohm (GΩ) and 10 GΩ.

19. The wearable electronic device of claim 17 ,
wherein the first electrode is configured to measure an electrocardiogram (ECG) of a wearer wearing the wearable electronic device, and
wherein the high-hardness member is engraved with an identifier to expose at least a part of the first conductive member.

20. The wearable electronic device of claim 19 ,
further comprising a third conductive member configured to connect the second conductive member and the PCB,
wherein the second conductive member is configured to not overlap the identifier in the first direction and in the second direction.

21. The wearable electronic device of claim 17 , further comprising:
a sensor configured to not overlap with the first and second electrodes and to measure a photo plethysmograph (PPG) of a wearer wearing the wearable electronic device.

22. The wearable electronic device of claim 21 , wherein the sensor is disposed on the fifth surface.

23. The wearable electronic device of claim 22 , wherein the sensor is disposed at a center of the fifth surface.

24. The wearable electronic device of claim 17 , wherein the third electrode comprises a button formed on at least a part of the third surface of the housing or a ring formed using a conductive material constituting at least a part of the third surface.

25. The wearable electronic device of claim 17 , wherein the third electrode comprises a transparent electrode constituting at least a part of the display.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Jeong Injo
• Jo Seongwook
• Yoo Hyunguk
• Kim Younghyun
• Lee Suho
• Lee Jeahyuck
• Lee Jeehoon
• Jung Hyunjun
• Cho Shinhee

Classifications

• A61B5/02438

  with portable devices, e.g. worn by the patient · CPC title

• A61B5/742

  using visual displays (displays for heart-related electrical signals, e.g. ECG, A61B5/339) · CPC title

• A61B5/681 Primary

  Wristwatch-type devices · CPC title

• A61B5/25

  Bioelectric electrodes therefor · CPC title

• A61B5/7445

  Display arrangements, e.g. multiple display units · CPC title