Source: http://www.google.com/patents/US20070275507?ie=ISO-8859-1
Timestamp: 2015-03-05 12:32:01
Document Index: 132759599

Matched Legal Cases: ['art. 10', 'art. 11', 'art. 12', 'art 100', 'art 200', 'art 100', 'art 200', 'art 210', 'art 200', 'art 230', 'art 230', 'arts 56', 'arts 56', 'arts 56', 'arts 56', 'art 52', 'arts 56', 'art 52']

Patent US20070275507 - Molding apparatus for manufacturing semiconductor device and method using ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsThe present invention provides a molding apparatus for encapsulating a semiconductor substrate in which a plurality of semiconductor chips are formed and a method of manufacturing the semiconductor substrate using the same. The molding apparatus includes an upper half for fixing the semiconductor substrate...http://www.google.com/patents/US20070275507?utm_source=gb-gplus-sharePatent US20070275507 - Molding apparatus for manufacturing semiconductor device and method using the sameAdvanced Patent SearchPublication numberUS20070275507 A1Publication typeApplicationApplication numberUS 11/785,154Publication dateNov 29, 2007Filing dateApr 16, 2007Priority dateMay 23, 2006Also published asCN101079383A, CN101079383B, US7621732, US7883655, US20100041184Publication number11785154, 785154, US 2007/0275507 A1, US 2007/275507 A1, US 20070275507 A1, US 20070275507A1, US 2007275507 A1, US 2007275507A1, US-A1-20070275507, US-A1-2007275507, US2007/0275507A1, US2007/275507A1, US20070275507 A1, US20070275507A1, US2007275507 A1, US2007275507A1InventorsShinji MurakiOriginal AssigneeOki Electric Industry Co., Ltd.Export CitationBiBTeX, EndNote, RefManReferenced by (3), Classifications (14), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetMolding apparatus for manufacturing semiconductor device and method using the same
US 20070275507 A1Abstract
The present invention provides a molding apparatus for encapsulating a semiconductor substrate in which a plurality of semiconductor chips are formed and a method of manufacturing the semiconductor substrate using the same. The molding apparatus includes an upper half for fixing the semiconductor substrate and a lower half having a projecting part projecting to the semiconductor substrate. An encapsulation resin material is mounted on the top surface of the projecting part, and then the semiconductor substrate is encapsulated with an encapsulation resin material. Thus, the melted encapsulation resin material uniformly extends from the center of the semiconductor substrate. In addition, the resin encapsulation is performed while forming a vacuum in a cavity, so that air voids generated in a resin-encapsulated part can be effectively prevented.
1. A molding apparatus comprising an upper half having a substrate mounting plate and a lower half coupled with said upper half to form a cavity therebetween,
wherein said substrate mounting plate faces to said cavity, and said lower half includes a projecting part which faces to said cavity and projects to a substantial center point of said substrate mounting plate. 2. A molding apparatus according to claim 1,
wherein said projecting part is configured by a plurality of circular column parts which are stepwisely formed so that surface areas thereof decrease in a direction toward the top thereof. 3. A molding apparatus according to claim 1,
wherein said projecting part is configured by a plurality of rectangular column parts which are stepwisely formed so that surface areas thereof decrease in a direction toward the top thereof. 4. A molding apparatus according to claim 1,
wherein said projecting part is configured by a curved surface facing to said cavity. 5. A method of manufacturing a semiconductor device comprising the steps of;
preparing a molding apparatus comprising an upper half having a substrate mounting plate and a lower half coupled with said upper half to form a cavity therebetween, said substrate mounting plate facing to said cavity, and said lower half including a projecting part which faces to said cavity and projects to a substantial center point of said substrate mounting plate; fixing a semiconductor substrate on said substrate mounting plate of said upper half, said semiconductor substrate including a chip formation region and a circumferential region which surrounds said ship formation region, a first principal surface on which interconnection layers formed in said chip formation region and columnar electrodes connected to said interconnection layers are formed, and a second principal surface which is reverse to said first principal surface; attaching a release film so as to cover a surface of said lower half facing to said cavity; heating said upper half and said lower half; mounting an encapsulating resin material on said release film; encapsulating said semiconductor substrate with said resin material by clamping either one of said lower half or said upper half on the other while forming a vacuum in said cavity after coupling said lower half and said upper half. 6. The method of manufacturing a semiconductor device according to claim 5,
wherein said projecting part is configured by a plurality of circular column parts which are stepwisely formed so that surface areas thereof decrease in a direction toward the top thereof. 7. The method of manufacturing a semiconductor device according to claim 5,
wherein said projecting part is configured by a plurality of rectangular column parts which are stepwisely formed so that surface areas thereof decrease in a direction toward the top thereof. 8. The method of manufacturing a semiconductor device according to claim 5,
wherein said projecting part is configured by a curved surface facing to said cavity. 9. The method of manufacturing a semiconductor device according to claim 5,
wherein said encapsulating resin material comprises a circular column resin part and a plurality of radial parts which are radially disposed so as to surround said circular column resin part. 10. The method of manufacturing a semiconductor device according to claim 6,
wherein said encapsulating resin material comprises a circular column resin part and a plurality of radial parts which are radially disposed so as to surround said circular column resin part. 11. The method of manufacturing a semiconductor device according to claim 7,
wherein said encapsulating resin material comprises a circular column resin part and a plurality of radial parts which are radially disposed so as to surround said circular column resin part. 12. The method of manufacturing a semiconductor device according to claim 8,
In particular, the method of manufacturing the semiconductor device disclosed in the document Dl has the following steps.
An object of the present invention is to provide a molding apparatus for encapsulating a semiconductor device having a W-CSP structure and a method of manufacturing the semiconductor device using the same, which method can prevent deformation of columnar electrodes of the semiconductor. device and also can prevent air voids generated in a resin-encapsulated part by simple processes.
FIG. 1A illustrates a perspective top view of a semiconductor device of the present invention;
FIG. 1B illustrates a cross-sectional view of the semiconductor device taken along I-I′ line of FIG. 1A;
FIG. 2A illustrates a top view of a semiconductor wafer of the present invention;
FIG. 2B illustrates a enlarged top view of the semiconductor wafer of FIG. 2A;
FIG. 3A illustrate a cross-sectional view of a semiconductor device in a beginning step of manufacturing;
FIG. 3B illustrate a cross-sectional view of the semiconductor device in a further step of manufacturing;
FIG. 3C illustrate a cross-sectional view of the semiconductor device in a further step of manufacturing;
FIG. 4A illustrates a bottom view of a first metal mold part of a molding apparatus which is a first configuration example of mold apparatuses of the present invention;
FIG. 4B illustrates a top view of a second mold the molding apparatus;
FIG. 5 illustrates a side view of the first metal mold part taken along I-I′ dashed line of FIG. 4A and second metal mold part taken along II-II′ dashed line of FIG. 4B;
FIG. 6A illustrates a top view of a second mold of a molding apparatus which is a second configuration example of mold apparatuses of the present invention;
FIG. 6B illustrates a side view of the molding apparatus of the second example;
FIG. 7A illustrates a top view of a second mold of a molding apparatus which is a third example of mold apparatuses of the present invention; FIG. 7B illustrates a side view of the molding apparatus of the third example;
FIG. 8A illustrates a side view of a molding apparatus in a beginning step of resin-encapsulation;
FIG. 8B illustrates a side view of the molding apparatus in a further step of resin-encapsulation;
FIG. 9A illustrates a side view of the molding apparatus in a further step of resin-encapsulation;
FIG. 9B illustrates a side view of the molding apparatus in a further step of resin-encapsulation;
FIG. 10A illustrates a top view of a second mold of a molding apparatus which is a fourth example of mold apparatuses of the present invention; FIG. 10B illustrates a side view of the second mold of FIG. 10A;
FIG. 11A illustrates a top view of an encapsulation resin material mounted on a second metal mold part of the present invention; and
An encapsulation process of the present invention and configuration examples of a molding apparatus thereof or will now be described.
FIG. 4A is a schematic bottom view of a first metal mold part of a first configuration example of the present invention. FIG. 4B is a schematic top view of a second metal mold part of the first configuration example.
FIG. 7A is a schematic top view of a second metal mold part of a third configuration example of a metal mold of the present invention. FIG. 7B is a schematic cross-sectional view of the third configuration example having the first metal mold part of FIG. 4A and the second metal mold part of FIG. 7A. The cross-sectional view of the first metal mold part of FIG. 7B is taken along I-I′ of FIG. 4A. The cross-sectional view of the second metal mold part of FIG. 7B is taken along I-I dashed line of FIG. 6A.
An encapsulating step in which the above-described metal mold is used will now be described with reference to FIG. 8A, 8B, 9A and 9B. In the encapsulating step described here, a metal mold similar to the first configuration example is used for encapsulating with an encapsulation resin material.
In addition, a surface of the insulating film 22 shown in FIG. 3B is defined as a first principal surface 11 a of the semiconductor wafer 11. A surface opposed to the first principal surface 11 a is defined as a second principal surface 11 b of the semiconductor wafer 11. As shown in FIG. 2A, the semiconductor wafer 11 of FIG. 2A is configured by a plurality of structural body which are diced into a plurality of semiconductor devices 10. In the following description, the semiconductor wafer 11 is configured by two structural bodies corresponding to two semiconductor devices 10.
Next, as shown in FIG. 8B, the first metal mold part 100 and the second metal mold part 200 are tightly clamped by a metal mold elevating system (not shown). The clamping pressure under which the encapsulation resin material is not leaked to the outside of the clamped first and second metal molds is preferable. In specifically, the clamping pressure is in the range from 10 t (98000 N) to 60 t (588000 N). By combining the first metal mold part 100 and the second metal mold part 200, a cavity 60 is formed between the clamp 110 and the second base part 210.
According to the method for manufacturing (resin-encapsulating) the semiconductor device of the present invention, the encapsulation resin material 50 mounted on one part of the second metal mold part 200, that is, on the projecting part 230 is melted. At the same time, the encapsulation resin material 50. (the melted resin 50′) is largely compressed by, in particular, the projecting part 230 which is formed in the center of the cavity 60. Thus, the encapsulation resin material 50 can easily extend over the cavity 60. The generation of voids in the resin-encapsulated part due to residual air in the cavity 60 can be prevented more effectively. In addition, according to the method of the present invention, the resin-encapsulated part can be formed in a short time period, at a high yielding rate, and with a high accuracy.
φ 140 mm (FIRST
COLOMNAR
PART) + φ100 mm
As shown in TABLE 1, in the case of configurations having a first column part (φ 140 mm or φ 100 mm) and having both of a first column part (φ 140 mm) and a second column part (φ 100 mm), void generation ratios can be reduced in comparison with the prior art. In particular, in the case of the configuration of both the first columnar part and the second columnar part, the void generation ratio is one third or less than the prior art.
In addition, in the case of the configuration having both of the first column part (φ 140 mm) and the second column part (φ 100 mm), the void generation ratio is reduced in comparison with the void generation ratio in the case of the configuration having the first column part (φ 140 mm) or the second column part (φ 100 mm).
The number of the radial resin parts 56 can be arbitrarily and suitably configured. The encapsulation resin material 50 of the configuration example has eight radial resin parts 56. Eight radial resin parts 56 are roundly disposed at regular intervals so that consecutive angles between the long axis adjacent to each other is 450. As shown in FIG. 11A, each of the radial resin parts 56 is mounted on the release film 40 so as to contact the first columnar resin part 52. Each of the radial resin parts 56 may be separated from the first columnar resin part 52.
As described above, if the plurality of resin parts are molded and then the encapsulation process is performed, the melted resin material can be extended more effectively and more rapidly form the center of cavity to the edge of cavity, in other words, from the center of semiconductor substrate to the outside edge of semiconductor substrate. Therefore, the generation of air voids in the encapsulation part, which is resulted from the residual, air in the cavity, can be prevented more effectively. In addition, the resin encapsulated part can be fabricated in a short period of time, at a yield ratio, and with a high accuracy.
Referenced byCiting PatentFiling datePublication dateApplicantTitleUS8293583 *Aug 23, 2011Oct 23, 2012Kabushiki Kaisha ToshibaMethod for manufacturing semiconductor deviceUS20110127689 *Apr 27, 2010Jun 2, 2011Samsung Electro-Mechanics Co., Ltd.Apparatus for manufacturing electronic component and method for manufacturing electronic componentUS20120052632 *Aug 23, 2011Mar 1, 2012Kabushiki Kaisha ToshibaMethod for manufacturing semiconductor device* Cited by examinerClassifications U.S. Classification438/127, 257/E21.502, 425/405.1International ClassificationB29C33/00, H01L21/56Cooperative ClassificationH01L2924/0002, B29C39/42, H01L21/566, B29C33/10, H01L23/3114European ClassificationB29C33/10, B29C39/42, H01L23/31H1, H01L21/56M4Legal EventsDateCodeEventDescriptionMar 21, 2014ASAssignmentOwner name: LAPIS SEMICONDUCTOR CO., LTD., JAPANFree format text: CHANGE OF NAME;ASSIGNOR:OKI SEMICONDUCTOR CO., LTD;REEL/FRAME:032495/0483Effective date: 20111003May 8, 2013FPAYFee paymentYear of fee payment: 4Jan 16, 2009ASAssignmentOwner name: OKI SEMICONDUCTOR CO., LTD., JAPANFree format text: CHANGE OF NAME;ASSIGNOR:OKI ELECTRIC INDUSTRY CO., LTD.;REEL/FRAME:022162/0586Effective date: 20081001Owner name: OKI SEMICONDUCTOR CO., LTD.,JAPANFree format text: CHANGE OF NAME;ASSIGNOR:OKI ELECTRIC INDUSTRY CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100216;REEL/FRAME:22162/586Free format text: CHANGE OF NAME;ASSIGNOR:OKI ELECTRIC INDUSTRY CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100225;REEL/FRAME:22162/586Free format text: CHANGE OF NAME;ASSIGNOR:OKI ELECTRIC INDUSTRY CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100302;REEL/FRAME:22162/586Free format text: CHANGE OF NAME;ASSIGNOR:OKI ELECTRIC INDUSTRY CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100316;REEL/FRAME:22162/586Free format text: CHANGE OF NAME;ASSIGNOR:OKI ELECTRIC INDUSTRY CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100323;REEL/FRAME:22162/586Free format text: CHANGE OF NAME;ASSIGNOR:OKI ELECTRIC INDUSTRY CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100330;REEL/FRAME:22162/586Free format text: CHANGE OF NAME;ASSIGNOR:OKI ELECTRIC INDUSTRY CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100406;REEL/FRAME:22162/586Free format text: CHANGE OF NAME;ASSIGNOR:OKI ELECTRIC INDUSTRY CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100504;REEL/FRAME:22162/586Free format text: CHANGE OF NAME;ASSIGNOR:OKI ELECTRIC INDUSTRY CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100511;REEL/FRAME:22162/586Free format text: CHANGE OF NAME;ASSIGNOR:OKI ELECTRIC INDUSTRY CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100525;REEL/FRAME:22162/586Free format text: CHANGE OF NAME;ASSIGNOR:OKI ELECTRIC INDUSTRY CO., LTD.;REEL/FRAME:22162/586Apr 16, 2007ASAssignmentOwner name: OKI ELECTRIC INDUSTRY CO., LTD., JAPANFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MURAKI, SHINJI;REEL/FRAME:019247/0998Effective date: 20070404RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services