US3695414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die sorting system
Assignee: Teledyne Inc
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Filing: 1970-11-27
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Granted: 1972-10-03
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Expires: 1990-11-27
Abstract
Abstract A wafer of semiconductor devices is tested to determine the quality of each device. The test data with respect to each die is electro-optically encoded and photographically recorded in a pattern corresponding to the die pattern on the wafer. Upon completion of the testing and recording operations the wafer is scored, mounted on a flexible pressure sensitive adhesive web and broken so as to separate the dies from one another while maintaining their original orientation. The dice and their respective test record are then mounted on a common frame, side by side, so that each die and its test data are readily matched. The frame is then mounted on a die sorting mechanism comprised of an XY indexing table which indexes through an electrooptical reader where the test data is read out to designate the die to a selected delivery station.
Inventors
- 👤 Mordechai Wiesler
- 👤 Virgil Martinonis
- 👤 John S Macintyre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:14
CPC Classifications
H; H05; H05K; H05K13/00; H05K13/003; B; B07; B07C; B07C5/00; B07C5/34; B07C5/344
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
302 words
An apparatus for handling a flexible tape: a. a frame; b. a first reel rotatably mounted to said frame; c. A flexible tape formed with sprocket holes along a margin thereof, said tape formed also with spaced storage holes centrally thereof; d. an adhesive web bonded to one side of said tape, each said storage hole and one face of said adhesive web defining a storage compartment adapted for reception of a semiconductor device, said semiconductor device adhering to said adhesive web in said storage compartmeNt, said flexible tape and adhesive web wound on said first reel; e. a sprocket drive having radially extending fingers which operate to engage successive ones of said sprocket holes, said sprocket drive rotatably mounted to said frame; f. first means operatively connected to said sprocket drive for selectively rotating said sprocket drive and selectively advancing said flexible tape and adhesive web; g. a first contoured guide plate connected to said frame and adapted to guide said flexible tape and adhesive web form said sprocket drive to a first position; h. a second contoured guide plate connected to said frame and adapted to guide said flexible tape and adhesive web from said first position to a second position; i. a second reel rotatably mounted to said frame and adapted to receive said flexible tape and adhesive web from said second position; and j. second means operatively connected to said first and second reels for rotating said first and second reels in unison; k. said first reel defining a feed reel and said second reel defining a take-up reel, said flexible tape and adhesive web on said feed reel threaded in said apparatus in such a manner so as to successively engage said sprocket drive, said first and second contoured guide plates for reception by said take-up reel.
Claim 2
Independent Claim
302 words
An apparatus for handling a flexible tape: a. a frame; b. a first reel rotatably mounted to said frame; c. A flexible tape formed with sprocket holes along a margin thereof, said tape formed also with spaced storage holes centrally thereof; d. an adhesive web bonded to one side of said tape, each said storage hole and one face of said adhesive web defining a storage compartment adapted for reception of a semiconductor device, said semiconductor device adhering to said adhesive web in said storage compartmeNt, said flexible tape and adhesive web wound on said first reel; e. a sprocket drive having radially extending fingers which operate to engage successive ones of said sprocket holes, said sprocket drive rotatably mounted to said frame; f. first means operatively connected to said sprocket drive for selectively rotating said sprocket drive and selectively advancing said flexible tape and adhesive web; g. a first contoured guide plate connected to said frame and adapted to guide said flexible tape and adhesive web form said sprocket drive to a first position; h. a second contoured guide plate connected to said frame and adapted to guide said flexible tape and adhesive web from said first position to a second position; i. a second reel rotatably mounted to said frame and adapted to receive said flexible tape and adhesive web from said second position; and j. second means operatively connected to said first and second reels for rotating said first and second reels in unison; k. said first reel defining a feed reel and said second reel defining a take-up reel, said flexible tape and adhesive web on said feed reel threaded in said apparatus in such a manner so as to successively engage said sprocket drive, said first and second contoured guide plates for reception by said take-up reel.
Claim 3
Dependent Claim
243 words
A semiconductor device indexing apparatus comprising: a. a flexible strip formed with indexing holes along one edge and storage holes near the other edge; b. a pressure sensitive adhesive tape laminated to said flexible strip on a bottom side thereof, said adhesive tape operating as an adhesive floor for said storage holes, said adhesive floor and each said storage hole defining a storage compartment adapted for reception of a semiconductor device, each said semiconductor device received in each said storage compartment adhering to said adhesive floor, said flexible strip and adhesive tape defining a laminated strip; c. a frame; d. a feed reel rotatably mounted to said frame, said laminated strip wound on said feed reel; e. a sprocket having radially extending fingers which operate to engage successive ones of said indexing holes, said sprocket rotatably mounted to said frame; f. first means drivingly connected to said sprocket for selectively rotating said sprocket and selectively indexing said laminated strip; g. a take-up reel rotatably mounted to said frame and adapted to receive said laminated strip; h. second means operatively connected to said feed reel and take-up reel for rotating said reels in unison; and i. track means mounted to said frame for guiding said laminated strip from said sprocket to said take-up reel, said laminated strip on said feed reel threaded in said apparatus in such a manner as to successively engage said sprocket and track means for reception by said take-up reel.
Claim 4
Dependent Claim
243 words
A semiconductor device indexing apparatus comprising: a. a flexible strip formed with indexing holes along one edge and storage holes near the other edge; b. a pressure sensitive adhesive tape laminated to said flexible strip on a bottom side thereof, said adhesive tape operating as an adhesive floor for said storage holes, said adhesive floor and each said storage hole defining a storage compartment adapted for reception of a semiconductor device, each said semiconductor device received in each said storage compartment adhering to said adhesive floor, said flexible strip and adhesive tape defining a laminated strip; c. a frame; d. a feed reel rotatably mounted to said frame, said laminated strip wound on said feed reel; e. a sprocket having radially extending fingers which operate to engage successive ones of said indexing holes, said sprocket rotatably mounted to said frame; f. first means drivingly connected to said sprocket for selectively rotating said sprocket and selectively indexing said laminated strip; g. a take-up reel rotatably mounted to said frame and adapted to receive said laminated strip; h. second means operatively connected to said feed reel and take-up reel for rotating said reels in unison; and i. track means mounted to said frame for guiding said laminated strip from said sprocket to said take-up reel, said laminated strip on said feed reel threaded in said apparatus in such a manner as to successively engage said sprocket and track means for reception by said take-up reel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |