EP1444728A1 - Verfahren zum herstellen eines schutzes für chipkanten und anordnung zum schutz von chipkanten - Google Patents
Verfahren zum herstellen eines schutzes für chipkanten und anordnung zum schutz von chipkantenInfo
- Publication number
- EP1444728A1 EP1444728A1 EP03702311A EP03702311A EP1444728A1 EP 1444728 A1 EP1444728 A1 EP 1444728A1 EP 03702311 A EP03702311 A EP 03702311A EP 03702311 A EP03702311 A EP 03702311A EP 1444728 A1 EP1444728 A1 EP 1444728A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- encapsulant material
- substrate
- chip
- semiconductor chip
- semiconductor
- 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- Withdrawn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
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W74/00—Encapsulations, e.g. protective coatings
- H10W74/01—Manufacture or treatment
-
- 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
- H10W74/00—Encapsulations, e.g. protective coatings
- H10W74/10—Encapsulations, e.g. protective coatings characterised by their shape or disposition
- H10W74/131—Encapsulations, e.g. protective coatings characterised by their shape or disposition the semiconductor body being only partially enclosed
- H10W74/141—Encapsulations, e.g. protective coatings characterised by their shape or disposition the semiconductor body being only partially enclosed the encapsulations being on at least the sidewalls of the semiconductor body
-
- 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
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/67—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their insulating layers or insulating parts
- H10W70/68—Shapes or dispositions thereof
- H10W70/681—Shapes or dispositions thereof comprising holes not having chips therein, e.g. for outgassing, underfilling or bond wire passage
-
- 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
- H10W90/734—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 insulating package substrate, interposer or RDL
Definitions
- the invention relates to a method for producing protection for chip edges in case-less electronic components in which semiconductor chips provided with a laterally open bond channel are mounted on a substrate with the interposition of a tape.
- the invention further relates to an arrangement for protecting chip edges.
- unprotected chip edges are extremely sensitive to mechanical loads, e.g. against bumps.
- the result of the resulting damage is high failure rates in handling.
- a thermo-mechanical mismatch of the materials used for the electronic components can often lead to mechanical stress at the chip edges or their corners and damage.
- Unprotected fuses, including electrical fuses for switching on redundancies are also very sensitive to environmental influences such as moisture and ions and can therefore corrode very easily.
- thermomechanical see tensions can not be effectively eliminated with the described methods.
- thermomechanical stress Another possibility for reducing thermomechanical stress is shown, for example, in US Pat. No. 5,293,067.
- a chip carrier for integrated circuits in which a semiconductor chip is electrically and mechanically connected to a substrate via bumps (solder balls) and contact islands (pads).
- an organic connecting agent such as an epoxy resin or silicone.
- This underfiller is also intended to reduce mechanical stress (stress) between the semiconductor chip and the substrate.
- the underfiller also has the function of protecting the active areas and the electrical connections against environmental influences.
- the underfiller can fill the entire space between the components or, if appropriate, only the area of the active surface of the semiconductor chip. Effective edge protection of the semiconductor chip is, however, not possible with this arrangement.
- the invention is therefore based on the object of creating an easy-to-implement method and an arrangement for reliably protecting the chip edges / corners.
- the object on which the invention is based was achieved in a method of the type mentioned at the outset in that a tape is used for mounting the semiconductor chip on the substrate, the outline of which is smaller than the outline of the semiconductor chip, so that it runs between the semiconductor chip and the substrate a circumferential shelter is formed as a capillary that after the electrical connections have been made between the semiconductor chip and the carrier element (wire bonding), a flowable encapsulant material is introduced into the bond channel in a first step until the encapsulant material reaches the edge of the semiconductor chip uniformly encloses and that the bond channel is then completely filled with encapsulant material in a second step.
- the filling of the bond channel with the encapsulant material is preferably continued until a uniform material throat has formed around the semiconductor chip.
- the encapsulant material is briefly annealed after the first step, as a result of which an excessive amount of material is prevented from escaping and the subsequent assembly step is prepared.
- a further embodiment of the invention provides that a material that shrinks during hardening is used as the encapsulant material. This ensures extremely effective edge protection.
- An epoxy / silicone mixture is preferably used as the encapsulant material, which can be introduced easily into the bond channel and which has good flow properties.
- the encapsulant material is introduced into the bond channel by printing or dispensing. This allows the receipt channel to be filled quickly and effectively, the amount of the encapsulant material introduced in the first step being specified depending on the component.
- the object of the invention is further achieved by an arrangement for protecting chip edges in electronic components, in which semiconductor chips provided with a laterally open bond channel are mounted on a substrate with the interposition of a tape and which is characterized in that in the region of the outer periphery of the semiconductor chip there is an intermediate space in the form of a capillary between the latter and the substrate, which is filled with an encapsulant material and that a material fillet made of the encapsulant material extends around the semiconductor chip and envelops at least its lower chip edge.
- the material throat consisting of the encapsulant material preferably has an angle of approximately 45 ° with respect to the substrate.
- the encapsulant material consists of an epoxy / silicone mixture with shrinkage properties, the encapsulant material being formed in one piece in the intermediate space and in the material throat.
- the process control and the associated design result in a material fillet of approximately 45 ° made of a soft encapsulant material that fulfills several tasks.
- it protects active chip edges from mechanical ones Damage from the outside and reduces the mechanical stress on the cip edges. Due to the material properties of the material used, a tensile load is converted into a compressive load on the active chip edge. This occurs through the chemical shrinking process of the material used during curing. Chip edges are known less sensitive to pressure loads than tensile loads Another effect is the covering of fuses and thus the prevention of environmental influences on the fuses.
- the method according to the invention can in principle be used in all electronic components in which there is or can be an intermediate space in the form of a capillary between the semiconductor chip and the substrate on which the semiconductor chip is mounted, which can be filled via a bond channel ,
- Chipsize packages can be easily implemented using BOC technology.
- FIG. 1 shows a top view of an arrangement for protecting chip edges produced using the method according to the invention
- Fig. 2 is a sectional view of Figure 1, section 1.
- Fig. 3 is a sectional view of Figure 1, section 2.
- FIG. 4 is a sectional view of FIG. 1, section 3.
- the semiconductor chip 2 provided with a laterally open central bonding channel 1 is mounted on a substrate 4 with the interposition of a tape 3.
- the substrate 4 is provided with interconnects, not shown, which are usually connected to the semiconductor chip 2 via wire bridges and are provided on the underside of the substrate 4 with solder balls 5, with which an electrical connection of the electronic component to printed circuit boards or the like , can be manufactured.
- an intermediate space 6 in the form of a capillary between the latter and the substrate 4, which is filled with an encapsulant material 7.
- a material fillet 8 made of the encapsulant material 7 extends around the semiconductor chip 2. This material fillet 8 envelops the lower chip edge 9 and forms an angle of approximately 45 ° with respect to the substrate 4.
- This material fillet 8 can also be designed so that it also includes the upper chip edge.
- the material fillet 8 is produced in that after the electrical connections between the semiconductor chip and the substrate 4 have been made by wire bonding, a flowable encapsulant material 7 is provided in the first step Bond channel 1 is introduced until it surrounds the lower edge 9 of the semiconductor chip 2 evenly.
- the filling of the bonding channel 1 with the encapsulant material 7 is preferably continued until a uniform material fillet 8 has formed around the semiconductor chip 2.
- the introduced encapsulant material 7 is then briefly annealed, which prevents an excessive amount of material from escaping and the subsequent assembly step is prepared.
- the encapsulant material 7 is completely hardened after the first step, which can be achieved by a longer tempering step.
- the bond channel 1 is completely filled with encapsulant material 7, so that all the wire bridges that extend through the bond channel are also encased.
- a material that shrinks during hardening e.g. an epoxy / silicone mixture is used, which has good flow properties.
- the encapsulant material 7 can be introduced into the bonding channel 1 by printing or dispensing, as a result of which the receipt channel 1 can be filled quickly and effectively, the amount of the encapsulant material 7 introduced in the first step also being able to be predetermined depending on the component.
Landscapes
- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10201204A DE10201204A1 (de) | 2002-01-14 | 2002-01-14 | Verfahren zum Herstellen eines Schutzes für Chipkanten und Anordnung zum Schutz von Chipkanten |
| DE10201204 | 2002-01-14 | ||
| PCT/DE2003/000012 WO2003058704A1 (de) | 2002-01-14 | 2003-01-07 | Verfahren zum herstellen eines schutzes für chipkanten und anordnung zum schutz von chipkanten |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1444728A1 true EP1444728A1 (de) | 2004-08-11 |
Family
ID=7712134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03702311A Withdrawn EP1444728A1 (de) | 2002-01-14 | 2003-01-07 | Verfahren zum herstellen eines schutzes für chipkanten und anordnung zum schutz von chipkanten |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7229857B2 (de) |
| EP (1) | EP1444728A1 (de) |
| DE (1) | DE10201204A1 (de) |
| TW (1) | TW591727B (de) |
| WO (1) | WO2003058704A1 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10201204A1 (de) * | 2002-01-14 | 2003-07-31 | Infineon Technologies Ag | Verfahren zum Herstellen eines Schutzes für Chipkanten und Anordnung zum Schutz von Chipkanten |
| DE102005015036B4 (de) | 2004-07-19 | 2008-08-28 | Qimonda Ag | Verfahren zur Montage eines Chips auf einer Unterlage |
| US7265441B2 (en) | 2005-08-15 | 2007-09-04 | Infineon Technologies Ag | Stackable single package and stacked multi-chip assembly |
| US8237293B2 (en) * | 2009-11-25 | 2012-08-07 | Freescale Semiconductor, Inc. | Semiconductor package with protective tape |
| JP6368921B2 (ja) * | 2013-10-01 | 2018-08-08 | パナソニックIpマネジメント株式会社 | 半導体装置 |
| CN108993835A (zh) * | 2018-07-16 | 2018-12-14 | 成都捷翼电子科技有限公司 | 一种新型段差填充方法 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0585376A4 (en) | 1991-05-23 | 1994-06-08 | Motorola Inc | Integrated circuit chip carrier |
| US6232152B1 (en) * | 1994-05-19 | 2001-05-15 | Tessera, Inc. | Method of manufacturing a plurality of semiconductor packages and the resulting semiconductor package structures |
| US5659952A (en) * | 1994-09-20 | 1997-08-26 | Tessera, Inc. | Method of fabricating compliant interface for semiconductor chip |
| JP2924830B2 (ja) * | 1996-11-15 | 1999-07-26 | 日本電気株式会社 | 半導体装置及びその製造方法 |
| KR100248792B1 (ko) * | 1996-12-18 | 2000-03-15 | 김영환 | 단일층 세라믹 기판을 이용한 칩사이즈 패키지 반도체 |
| US5923067A (en) * | 1997-04-04 | 1999-07-13 | International Business Machines Corporation | 3-D CMOS-on-SOI ESD structure and method |
| US6124546A (en) * | 1997-12-03 | 2000-09-26 | Advanced Micro Devices, Inc. | Integrated circuit chip package and method of making the same |
| SG88747A1 (en) * | 1999-03-01 | 2002-05-21 | Motorola Inc | A method and machine for underfilling an assembly to form a semiconductor package |
| US6300166B1 (en) * | 1999-08-30 | 2001-10-09 | Advanced Semiconductor Engineering, Inc. | Method for packaging a BGA and the structure of a substrate for use with the method |
| US6309908B1 (en) * | 1999-12-21 | 2001-10-30 | Motorola, Inc. | Package for an electronic component and a method of making it |
| US6560108B2 (en) * | 2000-02-16 | 2003-05-06 | Hughes Electronics Corporation | Chip scale packaging on CTE matched printed wiring boards |
| MY131961A (en) * | 2000-03-06 | 2007-09-28 | Hitachi Chemical Co Ltd | Resin composition, heat-resistant resin paste and semiconductor device using them and method for manufacture thereof |
| DE10201204A1 (de) * | 2002-01-14 | 2003-07-31 | Infineon Technologies Ag | Verfahren zum Herstellen eines Schutzes für Chipkanten und Anordnung zum Schutz von Chipkanten |
-
2002
- 2002-01-14 DE DE10201204A patent/DE10201204A1/de not_active Ceased
-
2003
- 2003-01-07 WO PCT/DE2003/000012 patent/WO2003058704A1/de not_active Ceased
- 2003-01-07 EP EP03702311A patent/EP1444728A1/de not_active Withdrawn
- 2003-01-14 TW TW092100708A patent/TW591727B/zh not_active IP Right Cessation
-
2004
- 2004-07-14 US US10/890,827 patent/US7229857B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03058704A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20050064630A1 (en) | 2005-03-24 |
| TW200304190A (en) | 2003-09-16 |
| TW591727B (en) | 2004-06-11 |
| DE10201204A1 (de) | 2003-07-31 |
| US7229857B2 (en) | 2007-06-12 |
| WO2003058704A1 (de) | 2003-07-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20040529 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IE IT |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: ZACHERL, JUERGEN Inventor name: BLASZCZAK, STEPHAN Inventor name: REISS, MARTIN |
|
| 17Q | First examination report despatched |
Effective date: 20090313 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20090724 |