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US4921336A Expired / Lapsed US ⏱️ 0.0 years remaining

Array of bistable devices and apparatus and methods for creating same

Assignee: Verizon Laboratories Inc
•
Filing: 1985-12-20
•
Granted: 1990-05-01
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Expires: 2005-12-20
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Abstract

Abstract An array of bistable devices includes a thin cadmium sulfide platelet having a first portion thereof that is substantially pure and the remaining portion thereof is implanted with atoms that can bind excitons. Such remaining portion can be implanted with ions from a lithium source. Apparatus for providing such an array can include a source of lithium ions and masking means for selectively permitting and for selectively inhibiting passage of ions from the source to pass therethrough and to implant in a pattern onto the platelet. The apparatus operates at temperatures in the neighborhood of liquid helium. A method for producing such an array includes providing a thin, substantially pure, platelet of cadmium sulfide, selectively masking the platelet with a pattern to selectively permit and to selectively inhibit passage of ions onto the platelet, and providing a source of ions. The source of ions, in accordance with certain features, can be lithium ions.

Inventors

  • 👤 Mario Dagenais
  • 👤 Wayne F. Sharfin
  • 👤 Robert J. Seymour
  • 👤 Boris S. Elman

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 03:05
CPC Classifications
G; G02; G02F; G02F3/00; G02F3/02

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 27 words
An array of bistable devices comprising a thin cadmium sulfide platelet having a first portion thereof substantially pure, and a second portion thereof rich in bound excitons.
Claim 2
Dependent Claim 27 words
An array of bistable devices comprising a thin cadmium sulfide platelet having a first portion thereof substantially pure, and a second portion thereof rich in bound excitons.
Claim 3
Dependent Claim 31 words
An array of bistable devices comprising a thin cadmium sulfide platelet having a first portion thereof substantially pure, and a second patterned portion thereof implanted with ions from a lithium source.
Claim 4
Dependent Claim 31 words
An array of bistable devices comprising a thin cadmium sulfide platelet having a first portion thereof substantially pure, and a second patterned portion thereof implanted with ions from a lithium source.
Claim 5
Dependent Claim 51 words
Apparatus for producing a two-dimensional array of bistable devices comprising a thin cadmium sulfide platelet, a source of ions that can bind excitons, and masking means for selectively permitting, and for selectively inhibiting, passage of ions from said source to pass therethrough and to implant in a pattern onto said platelet.
Claim 6
Dependent Claim 51 words
Apparatus for producing a two-dimensional array of bistable devices comprising a thin cadmium sulfide platelet, a source of ions that can bind excitons, and masking means for selectively permitting, and for selectively inhibiting, passage of ions from said source to pass therethrough and to implant in a pattern onto said platelet.
Claim 7
Dependent Claim 21 words
Apparatus as recited in claim 3 wherein said ions are selected from the group consisting of lithium ions and sodium ions.
Claim 8
Dependent Claim 18 words
Apparatus as recited in claim 3 further including means for providing temperatures in the neighborhood of liquid helium.
Claim 9
Independent Claim 44 words
A method of producing an array of bistable devices comprising providing a thin, substantially pure, platelet of cadmium sulfide, selectively masking said platelet with a pattern to selectively permit, and selectively inhibit, passage of ions onto said platelet, and providing a source of ions.
Claim 10
Independent Claim 44 words
A method of producing an array of bistable devices comprising providing a thin, substantially pure, platelet of cadmium sulfide, selectively masking said platelet with a pattern to selectively permit, and selectively inhibit, passage of ions onto said platelet, and providing a source of ions.
Claim 11
Dependent Claim 32 words
The method as recited in claim 6 wherein said ions are selected from the group consisting of lithium ions and sodium ions or any other types of ions that can bind excitons.

References Cited (Backward Citations)

US3253497A Cited
US3887271A Cited
US4203649A Cited
JPS5436955A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-04-30 1993-10-30 1994-05-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-04-30 1997-10-30 1998-05-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-04-30 2001-10-30 2002-05-01 $7700.00 Window Closed / Lapsed

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