Source: http://patents.com/us-9801316.html
Timestamp: 2019-01-21 09:44:35
Document Index: 368934735

Matched Legal Cases: ['Application No. 2012136216', 'Application No. 201210326053', 'Application No. 201210326053', 'Application No. 2012136216', 'Application No. 2012136216', 'Application No. 10']

US Patent # 9,801,316. Electronic device and board usable in the electronic device - Patents.com
United States Patent 9,801,316
Youn October 24, 2017
Electronic device and board usable in the electronic device
An electronic device includes an exterior portion of a conductive material, a circuit portion including circuit elements, and a protection circuit portion connected between the exterior portion and the circuit portion. The protection circuit portion includes a switching unit to intercept leakage current that flows from the circuit portion and leaks to the exterior portion, and a conversion unit to reduce a voltage level of an electrostatic component that flows through the exterior portion and to transfer the electrostatic component to the switching unit.
Youn; Jae-sub (Anyang-si, KR)
Youn; Jae-sub
Family ID: 1000002909900
13/599,026
US 20130057994 A1 Mar 7, 2013
Sep 6, 2011 [KR] 2011-0090376
Current CPC Class: H05K 9/0067 (20130101); H02H 9/046 (20130101); H02H 9/005 (20130101); H02H 9/00 (20130101)
Current International Class: H05K 9/00 (20060101); H02H 9/04 (20060101); H02H 9/00 (20060101)
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Russian Office Action dated Aug. 23, 2016 in Russian Patent Application No. 2012136216. cited by applicant .
Chinese Office Action dated Oct. 17, 2016 in Chinese Patent Application No. 201210326053.3. cited by applicant .
Chinese Office Action dated May 18, 2016 in Chinese Patent Application No. 201210326053.3. cited by applicant .
Russian Office Action dated Dec. 21, 2016 in Russian Patent Application No. 2012136216. cited by applicant .
Russian Decision on Grant dated Apr. 18, 2017 in corresponding Russian Patent Application No. 2012136216, (8 pages) (4 pages English Translation). cited by applicant.
1. An electronic device, comprising: an exterior portion made of a conductive material; a circuit portion disposed within the exterior portion and including circuit elements and a processor to perform functions of the electronic device; and a varistor to prevent a leakage current that flows from the circuit portion toward the exterior portion from flowing into the exterior portion and to transfer an electrostatic component input thereto via the exterior portion to a ground of the circuit portion, and a conversion unit to reduce a voltage level of the electrostatic component and to transfer the voltage-reduced electrostatic component to the varistor, the varistor and the conversion unit being connected in series, the conversion unit is one of a bead, a resistor, and an RL circuit having a resistor and an inductor connected in parallel, wherein ground of the circuit portion is configured to discharge the voltage-reduced electrostatic component to an area outside the electronic device by way of a ground of an adapter, and wherein the varistor and the conversion unit are connected to the circuit portion on a main board and the exterior portion.
2. The electronic device as claimed in claim 1, wherein the circuit portion is mounted on the main board, and the varistor and the conversion unit are mounted on a sub-board provided separately from the main board and connected to the circuit portion on the main board and the exterior portion through a conductive tape.
3. The electronic device as claimed in claim 1, wherein the circuit portion, the varistor, and the conversion unit are mounted together on the main board, and the varistor and the conversion unit are connected in series between a plastic encapsulated microcircuit (PEM) and the circuit portion on the main board, wherein the PEM connects the exterior portion and the main board.
4. The electronic device as claimed in claim 1, wherein the exterior portion is a metal case that surrounds the circuit portion and the protection circuit portion.
5. The electronic device as claimed in claim 1, wherein the exterior portion is a metal exterior member attached to a plastic case surrounding the circuit portion and the protection circuit portion.
6. The electronic device as claimed in claim 1, wherein the varistor has capacitance equal to or less than 5 pF.
7. A board usable in an electronic device, comprising: a protection circuit portion disposed within an exterior portion of a conductive material forming an exterior of the electronic device to be in contact with and connected between a circuit portion disposed within the electronic device including circuit elements and a processor to perform functions of the electronic device and the exterior portion of the conductive material forming the exterior of the electronic device, the protection circuit portion comprising: a varistor to prevent a leakage current that flows from the circuit portion toward the exterior portion from flowing into the exterior portion and to transfer an electrostatic component input thereto via the exterior portion to a ground of the circuit portion, and a conversion unit to reduce a voltage level of the electrostatic component and to transfer the voltage-reduced electrostatic component to the varistor, the varistor and the conversion unit being connected in series, the conversion unit is one of a bead, a resistor, and an RL circuit having a resistor and an inductor connected in parallel, wherein ground of the circuit portion is configured to discharge the voltage-reduced electrostatic component to an area outside the electronic device by way of a ground of an adapter, and wherein the varistor and the conversion unit are connected to the circuit portion on a main board and the exterior portion.
8. The board as claimed in claim 7, wherein the exterior portion is one of a metal case that surrounds the circuit portion and the varistor, the conversion unit, and a metal exterior member attached to a plastic case surrounding the circuit portion and the protection circuit portion.
9. The board as claimed in claim 7, wherein the varistor has a capacitance equal to or less than 5 pF.
10. An electronic device, comprising: a circuit portion disposed within the electronic device and including a processor to perform functions of the electronic device; and a protection circuit portion disposed within an exterior portion of the electronic device to be in contact with and coupled between the exterior portion of the electronic device and the circuit portion, comprising: a conversion unit to reduce a voltage of an electrostatic component received from the exterior portion, the conversion unit is one of a bead, a resistor, and an RL circuit having a resistor and an inductor connected in parallel, and a varistor to direct the electrostatic component with the reduced voltage to a ground of the circuit portion, and to intercept a leakage current that flows from the circuit portion toward the exterior portion from flowing into the exterior portion, wherein ground of the circuit portion is configured to discharge the voltage-reduced electrostatic component to an area outside the electronic device by way of a ground of an adapter, and wherein the conversion unit and the varistor are connected in series, and wherein the varistor and the conversion unit are connected to the circuit portion on a main board and the exterior portion.
11. The electronic device of claim 10, wherein the exterior portion comprises a conductive material on at least a portion thereof.
12. The electronic device of claim 10, further comprising: a plastic encapsulated microcircuit (PEM) to couple the main board to the external portion, wherein the circuit portion and the protection circuit are mounted on the main board.
This application claims priority under 35 U.S.C. .sctn.119(a) from Korean Patent Application No. 10-2011-0090376, filed on Sep. 6, 2011, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.
FIG. 3 is a cross-sectional view of an electronic device 300 according to another embodiment of the present general inventive concept. Referring to FIG. 3, the electronic device 300 includes a plastic case 310, a circuit portion 320, a protection circuit portion 330, conductive tapes 341 and 342, and a metal exterior member 350. With respect to elements illustrated in FIG. 3 that are identical to elements illustrated in FIGS. 1 and 2, duplicate descriptions thereof will be omitted. However, unlike the electronic devices 100 and 200 of FIGS. 1 and 2 respectively, the electronic device 300 according to the embodiment as illustrated in FIG. 3 includes the plastic case 310 that surrounds the circuit portion 320 and the protection circuit portion 330.
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