EP1504476A2 - Verfahren zum befestigen eines halbleiterchips in einem kunststoffgeh usek rper, optoelektronisches halbleiterbauelement und verfahren zu dessen herstellung - Google Patents
Verfahren zum befestigen eines halbleiterchips in einem kunststoffgeh usek rper, optoelektronisches halbleiterbauelement und verfahren zu dessen herstellungInfo
- Publication number
- EP1504476A2 EP1504476A2 EP03740003A EP03740003A EP1504476A2 EP 1504476 A2 EP1504476 A2 EP 1504476A2 EP 03740003 A EP03740003 A EP 03740003A EP 03740003 A EP03740003 A EP 03740003A EP 1504476 A2 EP1504476 A2 EP 1504476A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- plastic housing
- solder
- housing body
- semiconductor component
- connecting part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/85—Packages
- H10H20/857—Interconnections, e.g. lead-frames, bond wires or solder balls
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/071—Connecting or disconnecting
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/071—Connecting or disconnecting
- H10W72/073—Connecting or disconnecting of die-attach connectors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/071—Connecting or disconnecting
- H10W72/073—Connecting or disconnecting of die-attach connectors
- H10W72/07331—Connecting techniques
- H10W72/07336—Soldering or alloying
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/30—Die-attach connectors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/30—Die-attach connectors
- H10W72/321—Structures or relative sizes of die-attach connectors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/30—Die-attach connectors
- H10W72/321—Structures or relative sizes of die-attach connectors
- H10W72/322—Multilayered die-attach connectors, e.g. a coating on a top surface of a core
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/30—Die-attach connectors
- H10W72/351—Materials of die-attach connectors
- H10W72/352—Materials of die-attach connectors comprising metals or metalloids, e.g. solders
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/30—Die-attach connectors
- H10W72/381—Auxiliary members
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/50—Bond wires
- H10W72/531—Shapes of wire connectors
- H10W72/536—Shapes of wire connectors the connected ends being ball-shaped
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/50—Bond wires
- H10W72/531—Shapes of wire connectors
- H10W72/5363—Shapes of wire connectors the connected ends being wedge-shaped
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/851—Dispositions of multiple connectors or interconnections
- H10W72/874—On different surfaces
- H10W72/884—Die-attach connectors and bond wires
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
- H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
- H10W90/731—Package configurations characterised by the relative positions of pads or connectors relative to package parts of die-attach connectors
- H10W90/736—Package configurations characterised by the relative positions of pads or connectors relative to package parts of die-attach connectors between a chip and a stacked lead frame, conducting package substrate or heat sink
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
- H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
- H10W90/751—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires
- H10W90/756—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires between a chip and a stacked lead frame, conducting package substrate or heat sink
Definitions
- the invention relates to a method according to the preamble of claim 1 and an optoelectronic semiconductor component according to the preamble of claim 24. Furthermore, it relates to a method for producing such an optoelectronic semiconductor component.
- pre-packaged leadframes in which a chip mounting area is molded with a plastic housing body (so-called premolded packages), by means of an adhesive process.
- the present invention has for its object to develop a method of the type mentioned, in which a semiconductor chip can be attached by means of a metallic connection between the chip and the connector in a plastic housing body and at the same time the risk of impairing the functionality of the plastic housing body is reduced. Furthermore, a corresponding optoelectronic component and a method for its production are to be made available.
- thermoplastics such as PPA, polysulfones and LPC (liquid crystal polymer) are particularly preferred as thermoplastics.
- the thermoplastics are preferably filled with titanium dioxide, glass fibers, mineral fillers and similar fillers.
- a solder layer is preferably used, which can be used for soldering at temperatures between 200 and 260 ° C. The use of soft solders, in contrast to the use of hard solders, largely prevents tensioning of the soldered chip, which can lead to chip damage.
- the connecting part advantageously has a first and a second main surface.
- the first and the second main surface are encased by the plastic housing body, in particular the first and / or the second main surface directly adjoining the plastic housing body.
- Pure tin, an alloy whose main constituent is tin or alloys containing eutectic such as AgSn, CuSn, PbSn or InPb or a mixture of these alloys can be used as the low-melting soft solder. If an alloy is used as the solder, it is advantageous to choose the composition of the alloy so that it lies largely on the eutectic of the respective two- or multi-component system, so that the melting point of the alloy is as low as possible.
- the targeted deposition of a thin layer on the areas to be soldered with a thickness between 1 and 10 ⁇ m is advantageous.
- the deposition of a layer with a thickness between 2 and 5 ⁇ m is particularly advantageous. Wetting of the side surfaces of the LED chip on the side facing the leadframe, which would very easily lead to a short circuit of the active epitaxial layer sequence when flip-chip mounted (see below), can be prevented.
- the thin solder layers can preferably be made by conventional ones
- solder is applied to the lead frame, this is preferably done before the lead frame is reshaped with the plastic housing body.
- the multiple alternating deposition of thin layers of the individual components of an alloy is particularly advantageous.
- the total thickness of the layer package is again advantageously between 1 and 10 ⁇ m or between 2 and 5 ⁇ m.
- the metals of the thin layers mix due to the short diffusion distances to the neighboring layer during the soldering process.
- the rapid melting of the solder and thus the quick soldering of the chip and the connecting part advantageously have the effect that the plastic housing body premolded package only has to be exposed to an elevated temperature for a short time and therefore its functionality is largely unaffected.
- solder LED chips Due to the short soldering time and low temperatures of the soldering process, it is therefore possible to solder LED chips to leadframes in premolded packages, i.e. to be provided with metallic connections between the chip and the connector.
- solder In order to prevent the formation of an oxide layer on the solder or one of the surfaces to be soldered when the solder is heated, it is advantageous after the solder has been applied to a surface to be soldered, to coat a thin gold layer on the solder and / or on the chip surface or to apply the leadframe surface to be soldered.
- soldering chips Due to the low solder volume, there is in particular the possibility of soldering chips with the active epitaxial layer sequence facing the connection part.
- flip-chip also called “face-down” or “top-down” assembly, can only be realized on the basis of the very small solder volumes according to the technical teaching according to the invention.
- silver particles migrate relatively strongly in the presence of moisture in an electrical field. This is particularly the case with infrared sensors and emitters, which require high voltages to operate, the case.
- gold particles are commonly used in these cases as a conductive filler.
- FIG. 1 shows a schematic illustration of an optoelectronic component with a chip mounted by the method according to the invention
- FIG. 2 shows a schematic illustration of an optoelectronic component with a chip mounted on the flip-chip according to the inventive method
- FIG. 3 shows a schematic illustration of an optoelectronic component with a chip mounted on the flip-chip according to a conventional adhesive method
- FIG. 4 shows a schematic representation of a solder joint prepared according to a method according to the invention
- FIG. 5 shows a flow diagram for the assembly process of a first embodiment of the method according to the invention
- FIG. 6 shows a flow diagram for the assembly process of a second embodiment of the method according to the invention
- FIG. 7 shows a flow diagram for the assembly process of a third exemplary embodiment of the method according to the invention
- Fig. 8 is a flow diagram for the assembly process of a fourth embodiment of the method according to the invention.
- the exemplary embodiment according to FIG. 1 has a lead frame 2, which is molded or molded with a plastic housing body 5, with a first and a second main surface (premolded package).
- a recess 6 of this plastic housing body 5 which leads from the outside of the basic housing body to the lead frame 2, an LED chip 9 is fastened on a connecting part 12 of the metallic lead frame 2 by means of a soft solder.
- the first and second main surfaces of the leadframe are covered with plastic. Apart from the leadframe, there is essentially no additional heat sink.
- a metallization layer 22 applied to the plastic housing body 5 can alternatively be provided, which has a connection part 12.
- a heat sink embedded in the plastic housing body can serve as a connection part.
- a solder layer 3 between the LED chip 9 and the connection part 12 preferably has a thickness between 1 and 10 ⁇ m.
- the solder layer particularly preferably has a thickness of between 2 and 5 ⁇ m.
- the soft solder in this embodiment consists essentially of pure tin or of an alloy, the main component of which is tin. For example, an alloy whose material system has an eutectic can also be used as the solder material for soft soldering.
- the plastic housing body contains thermoplastic, preferably a high temperature thermoplastic such as PPA.
- thermoplastic preferably a high temperature thermoplastic such as PPA.
- Polysulfones or LCPs (Liquid Crystal Polymers) can also be used.
- Temperature resistance can be achieved with fillers such as glass fibers, mineral fillers and Ti0 2 .
- the plastic housing body can also have thermoset.
- the second embodiment shown in Fig. 2 differs from the embodiment just described in that the LED chip 9 in flip-chip assembly (see above) on a Connection part is attached by means of a soft solder.
- the connection part is a metallization layer 22 which is vapor-deposited on the housing base body 5, but can also be part of a lead frame, as in the former case. Due to the small solder thickness, the solder is not pressed out from under the chip 9. The risk of a short circuit of the epitaxial layer sequence is greatly reduced.
- solder layers 3 with very large thicknesses are applied, there is a danger, as illustrated in FIG. 3, that the solder is pressed out under the chip 9 placed on the leadframe 2. This solder wets the connection part and the side walls of the chip 9. If the chip 9 is arranged as a flip chip with the active side 4 towards the leadframe 2, the solder forming a meniscus 13 causes an electrical short circuit from the connection part 12 to the chip substrate 1 of the Chips 9 past the active epitaxial layer sequence 4.
- Fig. 4 shows a particularly advantageous possibility for the arrangement of a solder layer (3) which forms an alloy during the soldering process, the material system of which has a eutectic.
- Thin layers (23, 33) of the individual components of the alloy are arranged alternately between the chip and the connecting part.
- the layers (23) consist for example of tin and the layers (33) of silver.
- the individual metals mix with one another during the soldering process and form an alloy.
- the embodiment shown schematically in FIG. 5 is an assembly process for soft soldering an LED chip in a premolded package, as is described, for example, in the exemplary embodiment according to FIG. 1.
- a solder layer (for example with a thickness of 2 to 5 ⁇ m), which essentially consists of tin or an alloy, the main constituent of which is tin, is applied to a connecting part.
- the connection part can be, for example, a leadframe, a heat sink embedded in the plastic housing body or a metallization layer applied to a plastic housing body.
- a lead frame in particular a lead frame can be embedded without using a heat sink, so that a first and a second main surface of the lead frame are covered with plastic.
- the premolded package preferably runs through a soldering furnace at 200 to 260 ° C, in which the soldered connection is made.
- the premolded package then goes through a washing unit in which the residues, which are mainly caused by the flux, are rinsed off.
- the flux is necessary to remove the oxide layer on solder and chip that forms in the continuous furnace or to prevent the formation of an oxide layer.
- a gold film can also be deposited on the solder before the soldering process.
- solder layer can be applied to the leadframe before the plastic housing body is produced.
- solder is used in the form of a solder paste.
- the solder paste can be applied only on the connection part or only on the semiconductor chip or both on the connection part and on the semiconductor chip.
- An LED chip is placed on the part of the connection part prepared with solder paste within a premolded package before the strip passes through the soldering furnace.
- a washing unit is also connected downstream of the soldering oven in this exemplary embodiment.
- the solder is applied to the back of an LED chip by vapor deposition.
- An alloy is used as the solder material, the material system of which has a eutectic. This alloy can be AgSn, CuSn, PbSn, InPb or a mixture of at least two of these alloys. It is also possible to use a layer sequence of individual alloys or individual individual metals forming these alloys.
- the chip is placed on a lead frame within a premolded package. In contrast to the previous exemplary embodiments, the leadframe and chip are replaced by one located under the leadframe
- Heating table heated to melt the soft solder.
- soldered semiconductor component 7 is largely obtained without
- an LED chip that is vapor-coated with solder is placed on the leadframe within a premolded package.
- the solder layer has a thickness between 1 and 10 ⁇ m, preferably between 1 and 5 ⁇ m.
- the plastic housing body can be produced on the lead frame by extrusion coating or extrusion molding or another shaping method for thermosets or thermoplastics. In this
- Exemplary embodiment is previously applied to the spot to be soldered on the lead frame.
- the strip passes through a soldering oven and then a washing unit.
- the thickness of the solder layer is between 0.1 and 10 ⁇ m, preferably between 0.1 and 5 ⁇ m.
- the LED chip can also be attached to the connecting part in a flip-chip assembly. The vapor deposition of solder onto the LED chip then of course does not have to take place on the back of the chip, but rather on the active epitaxial layer sequence of the LED chip.
- the connector can be encased on two main surfaces by the plastic of the plastic housing body, so that there is no further heat sink on the connector.
- the method according to the invention can of course also be used for the soldering of other semiconductor structures, such as in particular infrared sensors and emitters, but also of transistors.
Landscapes
- Led Device Packages (AREA)
- Die Bonding (AREA)
- Wire Bonding (AREA)
- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
- Light Receiving Elements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10221857A DE10221857A1 (de) | 2002-05-16 | 2002-05-16 | Verfahren zum Befestigen eines Halbleiterchips in einem Kunststoffgehäusekörper, optoelektronisches Halbleiterbauelement und Verfahren zu dessen Herstellung |
| DE10221857 | 2002-05-16 | ||
| PCT/DE2003/001557 WO2003098706A2 (de) | 2002-05-16 | 2003-05-14 | Verfahren zum befestigen eines halbleiterchips in einen kunststoffgehäusekörper, optoelektronisches halbleiterbauelement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1504476A2 true EP1504476A2 (de) | 2005-02-09 |
Family
ID=29285481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03740003A Withdrawn EP1504476A2 (de) | 2002-05-16 | 2003-05-14 | Verfahren zum befestigen eines halbleiterchips in einem kunststoffgeh usek rper, optoelektronisches halbleiterbauelement und verfahren zu dessen herstellung |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8110437B2 (de) |
| EP (1) | EP1504476A2 (de) |
| JP (1) | JP2005526402A (de) |
| CN (1) | CN1666348A (de) |
| DE (1) | DE10221857A1 (de) |
| TW (1) | TWI260080B (de) |
| WO (1) | WO2003098706A2 (de) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE10348253B3 (de) * | 2003-10-16 | 2005-02-17 | Robert Bosch Gmbh | Verfahren zum Einkleben eines Chips in ein Premold-Gehäuse und zugehöringe Vorrichtung |
| DE102004004783A1 (de) * | 2003-12-19 | 2005-07-14 | Osram Opto Semiconductors Gmbh | Strahlungemittierendes Halbleiterbauelement und Verfahren zum Befestigen eines Halbleiterchips auf einem Leiterrahmen |
| CN100468792C (zh) * | 2004-11-24 | 2009-03-11 | 杨秋忠 | 整合型发光二极管及其制造方法 |
| DE102005029246B4 (de) * | 2005-03-31 | 2023-06-22 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Halbleiterchip mit einer Lötschichtenfolge und Verfahren zum Löten eines Halbleiterchips |
| US20070292708A1 (en) * | 2005-08-12 | 2007-12-20 | John Pereira | Solder composition |
| US20080175748A1 (en) * | 2005-08-12 | 2008-07-24 | John Pereira | Solder Composition |
| TWI284433B (en) * | 2006-02-23 | 2007-07-21 | Novalite Optronics Corp | Light emitting diode package and fabricating method thereof |
| DE112007001950T5 (de) | 2006-08-21 | 2009-07-02 | Innotec Corporation, Zeeland | Elektrische Vorrichtung mit platinenloser Montageanordnung für elektrische Komponenten |
| US20090001491A1 (en) * | 2006-10-30 | 2009-01-01 | Biomimetics Technologies Inc | Method for producing a microchip that is able to detect infrared light with a semiconductor at room temperature |
| JP5168152B2 (ja) * | 2006-12-28 | 2013-03-21 | 日亜化学工業株式会社 | 発光装置 |
| US8408773B2 (en) | 2007-03-19 | 2013-04-02 | Innotec Corporation | Light for vehicles |
| US7712933B2 (en) | 2007-03-19 | 2010-05-11 | Interlum, Llc | Light for vehicles |
| EP2232592B1 (de) | 2007-12-12 | 2013-07-17 | Innotec Corporation | Verfahren zum umspritzen einer leiterplatte |
| KR101101135B1 (ko) * | 2008-10-01 | 2012-01-05 | 삼성엘이디 주식회사 | 액정고분자를 이용한 발광다이오드 패키지 |
| TWI401825B (zh) * | 2009-11-27 | 2013-07-11 | 財團法人工業技術研究院 | 發光二極體晶片的固晶方法及固晶完成之發光二極體 |
| DE102010052835A1 (de) * | 2010-11-29 | 2012-05-31 | Osram Opto Semiconductors Gmbh | Optoelektronisches Bauelement und Verfahren zu dessen Herstellung |
| TWI446577B (zh) * | 2010-12-23 | 2014-07-21 | 財團法人工業技術研究院 | Led晶圓之接合方法、led晶粒之製造方法及led晶圓與基體之接合結構 |
| US8952413B2 (en) * | 2012-03-08 | 2015-02-10 | Micron Technology, Inc. | Etched trenches in bond materials for die singulation, and associated systems and methods |
| DE112013002944T5 (de) | 2012-06-13 | 2015-02-19 | Innotec, Corp. | Flexibler Hohllichtleiter |
| US9601673B2 (en) | 2014-11-21 | 2017-03-21 | Cree, Inc. | Light emitting diode (LED) components including LED dies that are directly attached to lead frames |
| DE102015216217A1 (de) * | 2015-08-25 | 2017-03-02 | Continental Teves Ag & Co. Ohg | Verfahren zum Ummanteln einer elektrischen Einheit und elektrisches Bauelement |
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- 2002-05-16 DE DE10221857A patent/DE10221857A1/de not_active Withdrawn
-
2003
- 2003-05-14 WO PCT/DE2003/001557 patent/WO2003098706A2/de not_active Ceased
- 2003-05-14 CN CN038110830A patent/CN1666348A/zh active Pending
- 2003-05-14 US US10/514,461 patent/US8110437B2/en not_active Expired - Lifetime
- 2003-05-14 JP JP2004506099A patent/JP2005526402A/ja active Pending
- 2003-05-14 TW TW092113060A patent/TWI260080B/zh not_active IP Right Cessation
- 2003-05-14 EP EP03740003A patent/EP1504476A2/de not_active Withdrawn
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| EP1002612A1 (de) * | 1998-11-20 | 2000-05-24 | Lucent Technologies Inc. | Kinetisch überprüfte Lötverbindung |
| US6261868B1 (en) * | 1999-04-02 | 2001-07-17 | Motorola, Inc. | Semiconductor component and method for manufacturing the semiconductor component |
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| DR THOMAS SIEWERT ET AL: "Database for Solder Properties with Emphasis on New Lead-free Solders Properties of Lead-Free Solders Release 4.0", 11 February 2002 (2002-02-11), XP055109187, Retrieved from the Internet <URL:http://www.msed.nist.gov/solder/NIST_LeadfreeSolder_v4.pdf> [retrieved on 20140320] * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005526402A (ja) | 2005-09-02 |
| DE10221857A1 (de) | 2003-11-27 |
| US20050214968A1 (en) | 2005-09-29 |
| TW200401422A (en) | 2004-01-16 |
| WO2003098706A2 (de) | 2003-11-27 |
| US8110437B2 (en) | 2012-02-07 |
| CN1666348A (zh) | 2005-09-07 |
| WO2003098706A3 (de) | 2004-05-27 |
| TWI260080B (en) | 2006-08-11 |
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