Management system for automated wire bonding process

• US 6,851,100 B1
• Filed: 03/11/2003
• Issued: 02/01/2005
• Est. Priority Date: 03/11/2002
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Heui-Seog, Chae, Soo-Tae, You, Yean-Sang
• Primary Examiner(s): Siek, Vuthe
• Assistant Examiner(s): Levin, Naum
• Application Number:
  US10/387,354
• Time in Patent Office: 693 Days
• Field of Search: 716 8- 15, 700/97, 700/121, 361/783
• US Class Current: 700/121
• CPC Class Codes: G06F 2113/18 Chip packaging
• CPC Class Codes: G06F 30/39 Circuit design at the physical level physical level design for reconfigurable circuits G06F30/347
• CPC Class Codes: H01L 2224/02166 Collar structures
• CPC Class Codes: H01L 2224/04042 Bonding areas specifically adapted for wire connectors, e.g. wirebond pads
• CPC Class Codes: H01L 2224/05553 being rectangular
• CPC Class Codes: H01L 2224/05554 being square
• CPC Class Codes: H01L 2224/0603 Bonding areas having different sizes, e.g. different heights or widths
• CPC Class Codes: H01L 2224/45144 Gold (Au) as principal constituent
• CPC Class Codes: H01L 2224/48247 connecting the wire to a bond pad of the item
• CPC Class Codes: H01L 2224/49171 Fan-out arrangements
• CPC Class Codes: H01L 2224/85207 Thermosonic bonding
• CPC Class Codes: H01L 24/06 of a plurality of bonding areas
• CPC Class Codes: H01L 24/45 of an individual wire connector
• CPC Class Codes: H01L 24/48 of an individual wire connector
• CPC Class Codes: H01L 24/49 of a plurality of wire connectors
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/00015 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed as prior art
• CPC Class Codes: H01L 2924/01004 Beryllium [Be]
• CPC Class Codes: H01L 2924/01005 Boron [B]
• CPC Class Codes: H01L 2924/01006 : Carbon [C]
• CPC Class Codes: H01L 2924/01013 : Aluminum [Al]
• CPC Class Codes: H01L 2924/01014 : Silicon [Si]
• CPC Class Codes: H01L 2924/01027 : Cobalt [Co]
• CPC Class Codes: H01L 2924/01029 : Copper [Cu]
• CPC Class Codes: H01L 2924/01033 : Arsenic [As]
• CPC Class Codes: H01L 2924/01047 : Silver [Ag]
• CPC Class Codes: H01L 2924/01075 : Rhenium [Re]
• CPC Class Codes: H01L 2924/01079 : Gold [Au]
• CPC Class Codes: H01L 2924/01082 : Lead [Pb]
• CPC Class Codes: H01L 2924/014 : Solder alloys
• CPC Class Codes: H01L 2924/10253 : Silicon [Si]
• CPC Class Codes: H01L 2924/14 : Integrated circuits
• CPC Class Codes: H01L 2924/1433 : Application-specific integrated circuit [ASIC]

Abstract

An integrated management system is provided for automatically executing a procedure of reviewing and editing an assembly reference and a bonding specification used for manufacturing IC packages. The system includes a drawing management system (DMS) that creates the assembly reference, and a bonding specification drawing system that creates, based on the assembly reference, the bonding specification. The integrated management system further includes a DMS database server that stores and manages the assembly reference and the bonding specification, a DMS file server that manages a blank diagram, a package outline, a bonding diagram, and a standard file, and a DMS web server that provides a web interface to a user for permitting a remote access. In particular, the drawing management system has a bonding rule check module that verifies whether the bonding specification meets a bonding rule suitable for an automated wire bonding process. The drawing management system produces the standard file to be transmitted to bonding equipments.

Claims

1. An integrated management system structured to automatically execute a procedure of reviewing and editing an assembly reference and a bonding specification used for manufacturing IC packages, said system comprising:

a drawing management system structured to output the assembly reference including a bonding diagram, a package outline, a package pin configuration, and package pin coordinates;

a bonding specification drawing system structured to output, based on the assembly reference, the bonding specification including a chip size of a chip, an electrode pad size for each electrode pad on the chip, an electrode pad position of the each electrode pad, a die pad size of each die pad, a die pad position of the each die pad, a length of each bonding wire, a position and an angle of the each bonding wire, a bonding sequence, a datum point for the each electrode pad, a datum point of each lead, a central point for the electrode pad, and a bonding attach point of the lead;

a database server structured to store and manage the assembly reference and the bonding specification;

a file server structured to manage an information diagram for a standard component, the package outline, the bonding diagram, and a formatted output file; and

a web server structured to provide a web interface to a user seeking to establish a remote access with the drawing management system,

wherein the drawing management system comprises a bonding rule check module structured to verify whether the bonding specification meets a bonding rule suitable for an automated wire bonding process, and wherein the drawing management system is structured to transmit the formatted output file to a bonding apparatus.

2. The system of claim 1, wherein the drawing management system is structured to provide an assembly reference review and an assembly reference edit.

3. The system of claim 1, wherein the drawing management system is structured to provide a pre-bonding module based on the bonding diagram that simulates the wire bonding process.

4. The system of claim 3, wherein the pre-bonding module is structured to output a list according to the electrode pad size the chip size, and a package type.

5. The system of claim 1, wherein the drawing management system is structured to provide a batch modification module that applies a partial modification of the assembly reference or the bonding specification to an entire database.

6. The system of claim 1, wherein the drawing management system is structured to provide an administrator menu module.

7. The system of claim 1, wherein the drawing management system is structured to provide an information menu module.

8. The system of claim 1, wherein the database server is structured to store bonding rule data.

9. The system of claim 1, wherein the file server is structured to output a chip pad file obtained from the bonding specification and is structured to transmit the chip pad file.

10. The system of claim 9, wherein the chip pad file includes a dimensions of the chip, a size of an opening on the electrode pad, an arrangement and a total number of electrode pads, a pitch between two electrode pads, and a width and a length of a scribe line.

11. The system of claim 10, wherein the chip pad file further includes a position of a chip ID mark, a location of the connection between the electrode pad and the lead, BGA ball numbers, and physical data on the electrode pad.

12. The system of claim 1, wherein the web server provides a blank diagram database, a package outline database, and a bonder viewer.

13. The system of claim 12, wherein the bonder viewer displays the bonding diagram retrieved through the filer server according to a bonding procedure.

14. The system of claim 1 further comprising a CAD data processing module.

15. The system of claim 14, wherein the CAD data processing module is structured to perform a centering operation that determines a central point of the lead and the electrode pad from the bonding diagram, and is structured to transmit data necessary for a bonder viewer.

16. The system of claim 14, wherein the IC packages includes memory semiconductor devices.

17. The system of claim 14, wherein the CAD data processing module includes a reader structured to read an original bonding diagram drawn by a CAD drawing tool, a data processing unit structured to perform a centering operation, and a writer structured to store the bonding diagram file to a corresponding database.

18. The system of claim 17, wherein the CAD data processing module is structured to output a standard bonding diagram to a bonder viewer module.

19. The system of claim 1, wherein the bonding rule check module has bonding rules based on a pitch between two electrode pads.

20. The system of claim 19, wherein the bonding rules includes rules related to a bonding pad opening, an electrode pad layout, a chip pad design, a bonding wire, and a chip dimension.

21. The system of claim 20, wherein the rules related to the bonding pad opening prescribe a size of the bonding pad opening and an intervals associated with the bonding pad opening, wherein the rules related to the electrode pad layout prescribe a minimum corner pad pitch, the number of corner pads, and a minimum space between corner bonding pad openings, wherein the rules related to the chip pad design prescribe spaces between the electrode pads, peripheral circuitry, and the scribe line, wherein the rules related to the bonding wire define a dimension and an angle of the wire, and wherein the rules related to the chip dimension define a chip pitch.

22. The system of claim 1 further comprising a blank diagram building module that includes a reader structured to read an original blank diagram drawn by a CAD drawing tool, a creating module structured to convert the original blank diagram into a blank diagram file, and a writer structured to store the blank diagram file to a corresponding database.

23. The system of claim 22, wherein the blank diagram file includes the die pad size and a position of the lead.

24. The system of claim 23, wherein the blank diagram includes the die pad position, information on the lead, the datum point of the lead for a wire bonder, and the bonding attach points of the leads.

25. The system of claim 1 further comprising a package outline building module that includes a reader structured to read an original package outline drawn by a CAD drawing tool, a creating module structured to convert the original package outline into a package outline file, and a writer structured to store the package outline file to a corresponding database.

26. The system of claim 25, wherein the package outline file includes a package contour, the number of package pins, and a location of an index mark.

27. The system of claim 1, wherein the bonding rule check module includes a reader, a bonding rule check unit, and a writer.

28. The system of claim 27, wherein the bonding rule check module provides automatic wiring operation based on a chip pad file.

29. The system of claim 27, wherein the bonding rule check module is structured to provide a gate array processing operation that builds verified chip layout data into a chip pad file in response to the user'"'"'s request.

30. The system of claim 1, wherein the blank diagram includes a lead frame blank diagram and a printed circuit board blank diagram.

31. A method of automatically executing a procedure of reviewing and editing an assembly reference and a bonding specification based on the assembly reference, wherein the assembly reference and the bonding specification are used for manufacturing IC packages, said method comprising:

producing the assembly reference with a drawing management system, the assembly reference comprising a bonding diagram, a package outline, a package pin configuration, and package pin coordinates, wherein producing the assembly reference further comprises verifying whether the bonding specification meets a bonding rule suitable for an automated wire bonding process using a bonding rule check module;

producing the bonding specification with a bonding specification drawing system, the bonding specification comprising a chip size of a chip, an electrode pad size for at least two electrode pads on the chip, an electrode pad position of the at least two electrode pads, a die pad size of a die pad of the chip, a die pad position of each die pad, a length of each bonding wire, a position and an angle of each bonding wire, a bonding sequence, a datum point for each of the at least two electrode pads, a datum point of a lead, a central point for each of the at least two electrode pads, and a bonding attach point of the lead;

storing and managing the assembly reference and the bonding specification with a database server;

managing an information diagram for a standard component, the package outline, the bonding diagram, and a formatted output file with a file server;

establishing a connection between the drawing management system and a remote user with a web browser interface; and

transmitting the formatted output file to a bonding apparatus.