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US4841906A Expired / Lapsed US ⏱️ 0.0 years remaining

Mass transferable semiconductor substrate processing and handling full shell carrier (boat)

Assignee: Heraeus Quartz North America LLC
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Filing: 1988-04-04
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Granted: 1989-06-27
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Expires: 2008-04-04
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Abstract

Abstract A carrier for mass transferable semiconductor substrate processing and handling comprises a two part shell including top and bottom semicylindrical halves made from clear fused quartz tubing and releasably assembled to form a cylindrical shell. A semiconductor substrate carrier is removably suspendable in the shell when assembled, and includes four clear fused quartz rods having axially running slots for supporting substrates and clear fused quartz end braces connected to the ends of the rods and clear fused quartz pick-up tubes connected to the end braces.

Inventors

  • 👤 Charles E. deGeest, Jr.

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 21:22
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/10; H10P72/13; H10P72/135

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 148 words
A carrier for mass transferable semiconductor substrate processing and handling, comprising: a two part shell including top and bottom semicylindrical halves made from clear fused quartz tubing and releasably assembled to form a cylindrical shell, wherein both shell halves have a relief cut in all four corners to define four slots when the halves are assembled; and a semiconductor substrate carrier suspendable in the shell when the two halves are assembled including four clear fused quartz rods having axially running slots for supporting substrates and clear fused quartz end braces connected to the ends of the rods and clear fused quartz pick-up tubes connected to, and in a same plane with, the end braces and each pick-up tube having end portions extending outwardly from the end braces and configured to be accommodated in the four slots to removably suspendable in the shell when the two halves are assembled.
Claim 2
Dependent Claim 148 words
A carrier for mass transferable semiconductor substrate processing and handling, comprising: a two part shell including top and bottom semicylindrical halves made from clear fused quartz tubing and releasably assembled to form a cylindrical shell, wherein both shell halves have a relief cut in all four corners to define four slots when the halves are assembled; and a semiconductor substrate carrier suspendable in the shell when the two halves are assembled including four clear fused quartz rods having axially running slots for supporting substrates and clear fused quartz end braces connected to the ends of the rods and clear fused quartz pick-up tubes connected to, and in a same plane with, the end braces and each pick-up tube having end portions extending outwardly from the end braces and configured to be accommodated in the four slots to removably suspendable in the shell when the two halves are assembled.
Claim 3
Dependent Claim 79 words
The carrier according to claim 1, wherein the rods have specified dimensions from the end of each rod to the center line of a first slot and assigned a tolerance of ±0.003" (0.0762 mm) with the first slot in each rod aligned on a common center line wherein an axis perpendicular to the longitudinal center line of the carrier and wherein the ends of the rods form a reference or indexing plane for use by a mass transfer machine.
Claim 4
Dependent Claim 38 words
The carrier according to claim 1, wherein the slots having specified center line spacing dimensions are assigned a noncumulative tolerance center line to center line of ±0.003" (0.0762 mm) to be both process and mass transfer machine compatible.
Claim 5
Dependent Claim 30 words
The carrier according to claim 1, where the shell half has a stop tab for preventing front to back shift of the shell top half when the carrier is assembled.
Claim 6
Dependent Claim 21 words
The carrier according to claim 1, wherein the pick up tubes are disposed parallel to allow access of a handling tool.
Claim 7
Dependent Claim 24 words
The carrier according to claim 1, wherein the or both of the top and bottom halves have transverse slots, longitudinal slots or round holes.

References Cited (Backward Citations)

US3828722A Cited
US3834349A Cited
US4098923A Cited
US4220116A Cited
US4318749A Cited
US4466381A Cited
US4515104A Cited
US4572101A Cited
US4615909A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-06-26 1992-12-26 1993-06-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-06-26 1996-12-26 1997-06-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-06-26 2000-12-26 2001-06-27 $7700.00 Window Closed / Lapsed

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