Portable electronic device with embedded electric shock protection function

Patent metadata

Field	Value
Publication number	US-10631448-B2
Application number	US-201615547358-A
Country	US
Kind code	B2
Filing date	Jan 29, 2016
Priority date	Jan 29, 2015
Publication date	Apr 21, 2020
Grant date	Apr 21, 2020

Abstract

Provided is a portable electronic device with an embedded electric shock protection function. A portable electronic device with an embedded electric shock protection function according to an exemplary embodiment of the present invention comprises: a circuit board; a camera module mounted on the circuit board; a conductive cover disposed to cover a part of an upper side of the camera module; a conductive connecting part mounted on the circuit board and configured to come into electrical contact with the conductive cover; and an electric shock protection element mounted on the circuit board to be connected in series to the conductive connecting part and configured to pass static electricity introduced from the conductive cover and block a leakage current of an external power source introduced into a ground of the circuit board.

First claim

What is claimed is:

1. A portable electronic device with an embedded electric shock protection function, the portable electronic device comprising:
a circuit board;
a camera module mounted on the circuit board;
a conductive cover disposed to cover a part of an upper side of the camera module;
a conductive connecting part having an elastic force and having one end electrically connected to a lower surface of the conductive cover and the other end mounted on the circuit board; and
an electric shock protection element mounted on the circuit board to be connected in series to the other end of the conductive connecting part and configured to pass static electricity introduced from the conductive cover to the circuit board and block a leakage current of an external power source introduced into a ground of the circuit.

2. The portable electronic device of claim 1 , wherein:
the conductive cover comprises a supporter which horizontally extends at a lower side thereof; and
the conductive connecting part is disposed at one side of the supporter.

3. The portable electronic device of claim 2 , further comprising a support member disposed between the other side of the supporter and the circuit board.

4. The portable electronic device of claim 3 , wherein the support member is any one of an insulator and the conductive connecting part.

5. The portable electronic device of claim 1 , wherein a through-hole corresponding to a lens of the camera module is provided at a center of the conductive cover.

6. The portable electronic device of claim 1 , wherein the conductive cover and the conductive connecting part are spaced a predetermined distance from the camera module.

7. The portable electronic device of claim 1 , wherein the circuit board comprises a pad and a wiring to electrically connect the conductive connecting part to the electric shock protection element in series.

8. The portable electronic device of claim 1 , wherein the conductive connecting part is disposed at a side portion of the conductive cover.

9. The portable electronic device of claim 1 , wherein the electric shock protection element satisfies the following expression:
Vbr>Vin
where, Vbr is a breakdown voltage of the electric shock protection element and Vin is a rated voltage of the external power source.

10. The portable electronic device of claim 1 , wherein the conductive connecting part is any one of a conductive gasket, a silicon rubber pad, and a clip-shaped conductor having an elastic force.

11. The portable electronic device of claim 10 , wherein the conductive gasket comprises at least one of a polymer body, a natural rubber, a sponge, a synthetic rubber, a heat-resistant silicon rubber, and a tube, formed by thermocompression bonding of a conductive paste.

12. The portable electronic device of claim 10 , wherein the silicon rubber pad comprises:
a body made of a silicon rubber; and
a conductive wire vertically formed inside the body.

13. The portable electronic device of claim 10 , wherein the silicon rubber pad comprises:
a body made of a silicon rubber;
a plurality of conductive layers horizontally and alternately stacked inside the body; and
a plurality of contact parts formed to have a curved protrusion shape at an upper side of the body.

14. The portable electronic device of claim 10 , wherein the silicon rubber pad comprises:
a body made of a non-conductive silicon rubber;
a conductive part comprising a plurality of through-holes which are formed vertically through an inside of the body and filled with a conductive silicon rubber and conductive particles; and
a plurality of contact parts formed to have a curved protrusion shape at both sides of the conductive part.

15. The portable electronic device of claim 10 , wherein the clip-shaped conductor comprises:
a contact part having a curved shape and configured to come into contact with the conductive cover;
a bent part having an elastic force and configured to extend from the contact part; and
a terminal part electrically connected to the electric shock protection element.

16. The portable electronic device of claim 9 , wherein the electric shock protection element comprises:
a sintered body formed by stacking a plurality of sheet layers; and
at least one pair of internal electrodes formed to be spaced a predetermined distance from each other inside the sintered body.

17. The portable electronic device of claim 16 , wherein the electric shock protection element further comprises an air gap formed between the pair of internal electrodes.

18. The portable electronic device of claim 17 , wherein the air gap comprises a discharge material layer coated on an inner wall thereof to a predetermined thickness in a height direction.

19. The portable electronic device of claim 16 , wherein the pair of internal electrodes are disposed on the same plane or are disposed to face each other in a vertical direction.

20. The portable electronic device of claim 9 , wherein the electric shock protection element comprises:
at least two varistor material layers in which a first varistor material layer and a second varistor material layer are alternately stacked;
a plurality of first internal electrodes spaced a predetermined distance (L 1 ) from each other on the first varistor material layer; and
a plurality of second internal electrodes spaced a predetermined distance (L 1 ) from each other on the second varistor material layer.

21. The portable electronic device of claim 20 , wherein the breakdown voltage (Vbr) is a sum of unit breakdown voltages formed between the second internal electrode and each of the nearest first internal electrodes.

22. The portable electronic device of claim 20 , wherein the first internal electrode and the second internal electrode are disposed so that at least a part of the first internal electrode and at least a part of the second internal electrode overlap or do not overlap.

23. The portable electronic device of claim 20 , wherein the distance (L 1 ) is greater than a shortest distance (d 1 ) between any one of the first internal electrodes and any one of the second internal electrodes.

24. A portable electronic device with an embedded electric shock protection function, the portable electronic device comprising:
a circuit board;
a camera module mounted on the circuit board;
a conductive cover disposed to cover a part of an upper side of the camera module; and
an electric shock protection contactor having one end electrically connected to the conductive cover and the other end electrically connected in series to the circuit board,
wherein the electric shock protection contactor comprises:
a conductive connecting part having an elastic force and having one end electrically connected to a lower surface of the conductive cover; and
an electric shock protection element having one end connected in series to the other end of the conductive connecting part and the other end connected to the circuit board and configured to pass static electricity introduced from the conductive cover to the circuit board and block a leakage current of an external power source introduced into a ground of the circuit board.

25. The portable electronic device of claim 24 , wherein:
the electric shock protection element comprises a connecting electrode on an upper surface thereof and an external electrode on a lower surface thereof; and
the conductive connecting par

Assignees

• Amotech Co Ltd

Inventors

• Ryu Jae Su
• Lim Byung Guk
• Park Kyu Hwan
• Yu Jun-Suh

Classifications

• H04M1/0264

  for a camera module assembly · CPC title

• H04M1/18

  Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment (H04M1/19 takes precedence) · CPC title

• G06F1/182

  with special features, e.g. for use in industrial environments; grounding or shielding against radio frequency interference [RFI] or electromagnetical interference [EMI] · CPC title

• G06F1/1626 Primary

  with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs] · CPC title

• G06F1/1656

  Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories (mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203) · CPC title