WO2004047510A2 - A method of supporting electronic components and an electronic device with elastic support for an electronic component - Google Patents
A method of supporting electronic components and an electronic device with elastic support for an electronic component Download PDFInfo
- Publication number
- WO2004047510A2 WO2004047510A2 PCT/EP2003/011458 EP0311458W WO2004047510A2 WO 2004047510 A2 WO2004047510 A2 WO 2004047510A2 EP 0311458 W EP0311458 W EP 0311458W WO 2004047510 A2 WO2004047510 A2 WO 2004047510A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pcb
- shock
- absorbing material
- elastically compressible
- electronic device
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/002—Casings with localised screening
- H05K9/0022—Casings with localised screening of components mounted on printed circuit boards [PCB]
- H05K9/0024—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields
- H05K9/0026—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields integrally formed from metal sheet
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/301—Assembling printed circuits with electric components, e.g. with resistor by means of a mounting structure
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/02—Arrangements of circuit components or wiring on supporting structure
- H05K7/12—Resilient or clamping means for holding component to structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/15—Structure, shape, material or disposition of the bump connectors after the connecting process
- H01L2224/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
- H01L2224/161—Disposition
- H01L2224/16151—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/16221—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/16225—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
- H01L2224/16227—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation the bump connector connecting to a bond pad of the item
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73251—Location after the connecting process on different surfaces
- H01L2224/73253—Bump and layer connectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/161—Cap
- H01L2924/162—Disposition
- H01L2924/16251—Connecting to an item not being a semiconductor or solid-state body, e.g. cap-to-substrate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/30—Technical effects
- H01L2924/301—Electrical effects
- H01L2924/3025—Electromagnetic shielding
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
- H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0104—Properties and characteristics in general
- H05K2201/0133—Elastomeric or compliant polymer
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/10371—Shields or metal cases
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/10393—Clamping a component by an element or a set of elements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/20—Details of printed circuits not provided for in H05K2201/01 - H05K2201/10
- H05K2201/2045—Protection against vibrations
Definitions
- a method of supporting electronic components and an electronic device with elastic support for an electronic component is provided.
- the invention relates to a method of providing support for an electronic component in an electronic device comprising a PCB (printed circuit board) and a structural element covering at least a part of the PCB.
- the invention also relates to such an electronic device.
- the cracks occur because the PCB is more flexible than the electronic component. Therefore, when an external force is applied to the electronic device it often causes a small bending of the PCB which in turn stresses the solder joints between the PCB and the electronic component.
- the problem of crack formation occurs especially in connection with so-called Chip Scale Components and in particular of the BGA-type (Ball Grid Array) that are soldered to the PCB via a plurality of ball-shaped soldering points provided at the underside of the component.
- the object of the invention is achieved by providing the support for the electronic components using the following steps:
- an electronic device as mentioned in the opening paragraph in which an elastically compressible and shock-absorbing material is provided between the structural element and the electronic component in such manner that the elastically compressible and shock- absorbing material provides a pressure on the electronic component towards the PCB.
- the electronic component is fully supported by the elastically compressible and shock-absorbing material that exerts a pressure on the electronic component towards the PCB.
- any external force applied to the electronic device such as a key press, will to some degree be absorbed by the elastically compressible and shock-absorbing material which entails less stress on the solder joints between the electronic component and the PCB.
- the use of an elastically compressible and shock-absorbing material in accordance with the invention has reduced the formation of solder joint cracks considerably in connection with chip scale components, both if a high force is applied to the keys of the electronic device or when keys are stroked repeatedly which generally causes fatigue failure to occur.
- the elastically compressible and shock-absorbing material is silicone. This material is often used to create gaskets on frames or other structural parts in the electronic device and it may therefore be applied to other areas of the frames or structural parts without any significant extra cost.
- thermoplastic elastomers that can also be applied to the structural element at low cost.
- the elastically compressible and shock-absorbing material may be electrically conductive, whereby it is possible to let the elastically compressible and shock-absorbing material be a functional part of the electronic device.
- the structural element is an electromagnetic shield can, and the same elastically compressible and shock-absorbing material is applied to an outer edge of the shield can in the same production step as the step in which it is applied to the shield can at an area thereof that is adapted to cover the component.
- the electronic device is a mobile radio station, such as a mobile telephone.
- Fig. 1 shows a partially disassembled mobile telephone provided with a PCB and an internal frame provided with means for supporting some of the electronic components on the PCB;
- Fig. 2 shows stepwise a method according to the invention of how to provide support for an electronic component on a PCB.
- Fig. 1 shows a partially disassembled mobile telephone 1 comprising a front cover 2, a back cover 3, a PCB 4 located in the front cover 1 , an internal frame 5 and a battery 6.
- the PCB 4 is provided with a number of electronic components, some of which are chip scale components 7,7', e.g. of the so-called BGA type (Ball Grid Array). These types of electronic components are highly exposed to crack formation in the solder joints between the component and the PCB 4 when external forces are applied to the keys of the mobile telephone 1.
- BGA Bit Grid Array
- the internal frame 5 may be shaped as a shield can that shields the electronic components on the PCB against electromagnetic radiation, or it may be shaped as a structural part of the mobile telephone 1.
- the internal frame 5 is structured in such manner that it has areas that are adapted to cover the chip scale components 7,7', and according to the invention these areas are provided with a layer of an elastically compressible and shock- absorbing material 8,8' intended to provide a back pressure on the chip scale components 7,7' when the internal frame 5 is mounted on the PCB 4.
- the internal frame 5 may be connected to the PCB 4 by any conventional method, such as by means of screws, soldering, gluing, etc.
- the internal frame 5 may also be indirectly connected to the PCB 4 by being firmly connected to the front cover 2 or to the back cover 6.
- Fig. 2 shows stepwise a method according to the invention of how to provide support for a chip scale component 17 of the BGA type on a PCB 14 by means of metallic shield can 15. The method initially follows two parallel paths: a component mounting path
- the chip scale component 17 provided with a ball grid array 19 is mounted on the PCB by any known procedure, such as a surface mounting process.
- the chip scale component 17 is positioned on the PCB 14, preferably by means of a pick-and-place machine, and the PCB 14 is heated to provide soldering joints between the chip scale component 17 and the PCB 14 at each solder ball in the ball grid array 19.
- Other electronic components may of course be positioned on the PCB 14, which for clarity reasons are not shown.
- the shield can 15 which is shaped as a flat, open metal box, is provided with an elastically compressible and shock- absorbing material, which in the preferred embodiment is an electrical conductive silicone material 18,18', at the outer edge or rim 21 and at the area 22 that is adapted to cover the chip scale component 17 when the shield can 15 is assembled with the PCB 14.
- an elastically compressible and shock- absorbing material which in the preferred embodiment is an electrical conductive silicone material 18,18', at the outer edge or rim 21 and at the area 22 that is adapted to cover the chip scale component 17 when the shield can 15 is assembled with the PCB 14.
- the electrical conductive silicone material 18,18' is applied in a layer that, at the rim 21 of the shield can 15, ensures that there is full contact between the shield can rim 21 and the PCB 14, and in a layer at the area that is adapted to cover the chip scale component 17 that is sufficient to ensure that a back pressure is provided on the chip scale component 17 by the electrical conductive silicone material 18 when the shield can 15 is inverted and assembled with the PCB 14 as shown in the last drawing in Fig. 2.
- the elastically compressible and shock-absorbing material can be chosen from among a number of materials that have suitable elastic properties.
- the material is a silicone material which could be electrical conductive as described in the example above with reference to Fig. 2, or it could be normal silicone applied in a double-moulding process.
- Other suitable materials could be thermoplastics elastomers or any other kind of rubber or rubber-like material.
- the elastically compressible and shock-absorbing material may be applied to the structural element by any convenient method depending on the material that is used. A person skilled in the art can easily select an appropriate application method once the material to be applied is chosen.
- the structural element to which the elastically compressible and shock- absorbing material is applied may be any structural or functional part of an electronic device.
- the element may be an internal frame of the electronic device or a shield can protecting electronic components against electromagnetic radiation.
- the element could also be the outer casing or cover of the electronic device.
- the element may of course be made of any suitable material, such as metal or plastics.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Mounting Of Printed Circuit Boards And The Like (AREA)
- Mounting Components In General For Electric Apparatus (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2003801035474A CN101189928B (en) | 2002-11-19 | 2003-10-14 | A method of supporting electronic components and an electronic device with elastic support for an electronic component |
BR0316301-6A BR0316301A (en) | 2002-11-19 | 2003-10-14 | Method for providing support for an electronic component in an electronic device, and, electronic device |
MXPA05005356A MXPA05005356A (en) | 2002-11-19 | 2003-10-14 | A method of supporting electronic components and an electronic device with elastic support for an electronic component. |
JP2004552476A JP4713154B2 (en) | 2002-11-19 | 2003-10-14 | Method for elastically supporting electronic components |
AU2003294695A AU2003294695A1 (en) | 2002-11-19 | 2003-10-14 | A method of supporting electronic components and an electronic device with elastic support for an electronic component |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02388071.9 | 2002-11-19 | ||
EP02388071A EP1422985B1 (en) | 2002-11-19 | 2002-11-19 | A method of supporting electronic components and an electronic device with elestic support for an electronic component |
US42837502P | 2002-11-22 | 2002-11-22 | |
US60/428,375 | 2002-11-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004047510A2 true WO2004047510A2 (en) | 2004-06-03 |
WO2004047510A3 WO2004047510A3 (en) | 2007-12-21 |
Family
ID=32327865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/011458 WO2004047510A2 (en) | 2002-11-19 | 2003-10-14 | A method of supporting electronic components and an electronic device with elastic support for an electronic component |
Country Status (7)
Country | Link |
---|---|
JP (1) | JP5404667B2 (en) |
KR (1) | KR20050085013A (en) |
AU (1) | AU2003294695A1 (en) |
BR (1) | BR0316301A (en) |
MX (1) | MXPA05005356A (en) |
RU (1) | RU2328841C2 (en) |
WO (1) | WO2004047510A2 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016125947A1 (en) * | 2015-02-06 | 2016-08-11 | 엘지전자 주식회사 | Mobile terminal |
US20170325365A1 (en) | 2016-05-04 | 2017-11-09 | Samsung Electronics Co., Ltd. | Hollow shielding structure for different types of circuit elements and manufacturing method thereof |
US10201072B2 (en) | 2016-12-12 | 2019-02-05 | Samsung Electronics Co., Ltd. | EMI shielding structure and manufacturing method thereof |
US10477687B2 (en) | 2016-08-04 | 2019-11-12 | Samsung Electronics Co., Ltd. | Manufacturing method for EMI shielding structure |
US10531599B2 (en) | 2017-09-08 | 2020-01-07 | Samsung Electronics Co., Ltd. | Electromagnetic interference shielding structure |
US10566293B2 (en) | 2015-03-06 | 2020-02-18 | Samsung Electronics Co., Ltd. | Circuit element package, manufacturing method thereof, and manufacturing apparatus thereof |
US10594020B2 (en) | 2017-07-19 | 2020-03-17 | Samsung Electronics Co., Ltd. | Electronic device having antenna element and method for manufacturing the same |
US10933505B2 (en) | 2016-03-29 | 2021-03-02 | Atlas Copco Airpower, Naamloze Vennootschap | Arrangement to enclose a circuit board |
CN114900950A (en) * | 2022-05-25 | 2022-08-12 | 广东江粉高科技产业园有限公司 | Bending crack resistant flexible circuit board and design method |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5390083A (en) * | 1993-09-30 | 1995-02-14 | Honeywell Inc. | Apparatus and method for stiffening circuit card assemblies |
EP0696880A2 (en) * | 1994-08-10 | 1996-02-14 | DODUCO GMBH + Co Dr. Eugen DÀ¼rrwächter | Plastic housing having a vibration damped mounting of a bondable element |
EP1085799A1 (en) * | 1999-09-14 | 2001-03-21 | Sagem Sa | Protection device for electronic components |
JP2001326492A (en) * | 2000-05-17 | 2001-11-22 | Casio Comput Co Ltd | Countermeasure component against heat and electromagnetic noise and electronic equipment |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE340959T1 (en) * | 1988-05-06 | 1990-08-16 | Digital Equipment Corp., Maynard, Mass. | CIRCUIT CHIP PACK FOR PROTECTION AGAINST ELECTROMAGNETIC INTERFERENCES, ELECTROSTATIC DISCHARGES AND THERMAL AND MECHANICAL VOLTAGES. |
JP2001177345A (en) * | 1999-12-15 | 2001-06-29 | Murata Mfg Co Ltd | Piezoelectric oscillator |
-
2003
- 2003-10-14 BR BR0316301-6A patent/BR0316301A/en not_active Application Discontinuation
- 2003-10-14 KR KR1020057008826A patent/KR20050085013A/en not_active Application Discontinuation
- 2003-10-14 WO PCT/EP2003/011458 patent/WO2004047510A2/en active Application Filing
- 2003-10-14 AU AU2003294695A patent/AU2003294695A1/en not_active Abandoned
- 2003-10-14 MX MXPA05005356A patent/MXPA05005356A/en active IP Right Grant
- 2003-10-14 RU RU2005119195/09A patent/RU2328841C2/en not_active IP Right Cessation
-
2011
- 2011-02-01 JP JP2011020051A patent/JP5404667B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5390083A (en) * | 1993-09-30 | 1995-02-14 | Honeywell Inc. | Apparatus and method for stiffening circuit card assemblies |
EP0696880A2 (en) * | 1994-08-10 | 1996-02-14 | DODUCO GMBH + Co Dr. Eugen DÀ¼rrwächter | Plastic housing having a vibration damped mounting of a bondable element |
EP1085799A1 (en) * | 1999-09-14 | 2001-03-21 | Sagem Sa | Protection device for electronic components |
JP2001326492A (en) * | 2000-05-17 | 2001-11-22 | Casio Comput Co Ltd | Countermeasure component against heat and electromagnetic noise and electronic equipment |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 03, 3 April 2002 (2002-04-03) & JP 2001 326492 A (CASIO COMPUT CO LTD), 22 November 2001 (2001-11-22) * |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016125947A1 (en) * | 2015-02-06 | 2016-08-11 | 엘지전자 주식회사 | Mobile terminal |
US9986072B2 (en) | 2015-02-06 | 2018-05-29 | Lg Electronics Inc. | Mobile terminal |
US10566293B2 (en) | 2015-03-06 | 2020-02-18 | Samsung Electronics Co., Ltd. | Circuit element package, manufacturing method thereof, and manufacturing apparatus thereof |
US10933505B2 (en) | 2016-03-29 | 2021-03-02 | Atlas Copco Airpower, Naamloze Vennootschap | Arrangement to enclose a circuit board |
US20170325365A1 (en) | 2016-05-04 | 2017-11-09 | Samsung Electronics Co., Ltd. | Hollow shielding structure for different types of circuit elements and manufacturing method thereof |
US10477737B2 (en) | 2016-05-04 | 2019-11-12 | Samsung Electronics Co., Ltd. | Manufacturing method of a hollow shielding structure for circuit elements |
US11445645B2 (en) | 2016-05-04 | 2022-09-13 | Samsung Electronics Co., Ltd. | Hollow shielding structure for different types of circuit elements and manufacturing method thereof |
US10477687B2 (en) | 2016-08-04 | 2019-11-12 | Samsung Electronics Co., Ltd. | Manufacturing method for EMI shielding structure |
US10201072B2 (en) | 2016-12-12 | 2019-02-05 | Samsung Electronics Co., Ltd. | EMI shielding structure and manufacturing method thereof |
US10594020B2 (en) | 2017-07-19 | 2020-03-17 | Samsung Electronics Co., Ltd. | Electronic device having antenna element and method for manufacturing the same |
US10531599B2 (en) | 2017-09-08 | 2020-01-07 | Samsung Electronics Co., Ltd. | Electromagnetic interference shielding structure |
CN114900950A (en) * | 2022-05-25 | 2022-08-12 | 广东江粉高科技产业园有限公司 | Bending crack resistant flexible circuit board and design method |
Also Published As
Publication number | Publication date |
---|---|
JP2011124598A (en) | 2011-06-23 |
BR0316301A (en) | 2005-09-27 |
JP5404667B2 (en) | 2014-02-05 |
RU2328841C2 (en) | 2008-07-10 |
WO2004047510A3 (en) | 2007-12-21 |
AU2003294695A8 (en) | 2004-06-15 |
RU2005119195A (en) | 2006-01-20 |
MXPA05005356A (en) | 2005-08-26 |
KR20050085013A (en) | 2005-08-29 |
AU2003294695A1 (en) | 2004-06-15 |
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