US4569573A
Expired / Lapsed
US
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Method of making light valve arrays having transversely driven electrooptic gates
Assignee: Eastman Kodak Co
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Filing: 1985-01-14
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Granted: 1986-02-11
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Expires: 2005-01-14
Abstract
Abstract A light valve array having transversely driven electrooptic gates is disclosed, with the array having a substrate and a plurality of discretely addressable electrooptic gates mounted thereon. Each gate has two spaced parallel surfaces, one of which has an addressable electrode and the other surface is connected to a planar conductive surface on the substrate. When a potential is applied between a gate electrode and the conductive surface of the substrate, a uniform electric field is produced in such gate. The array is mounted in a notch on a circuit board such that the addressable electrodes are in electrical contact with a corresponding plurality of circuit board conductors, and the planar conductive surface is in electrical contact with another circuit board conductor. According to the disclosed method of making these arrays, a stack of plates of electrooptic material is releasably assembled and permanently attached to a stack of plates of substrate material similarly releasably assembled in a manner such that the corresponding plates are aligned edge-to-edge. The attached stacks are machined, metallized to provide the gate electrodes, and then the plates are separated to form a plurality of such transversely driven light valve arrays.
Inventors
- 👤 John A. Agostinelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:23
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/03; G02F1/055; G02F1/0551; Y; Y10; Y10S; Y10S359/00; Y10S359/90; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1082; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49169
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
142 words
A method of simultaneously making a plurality of light valve arrays, each having a substrate and plurality of transversely driven electrooptic gates connected to said substrate, said method comprising the steps of: (a) releasably attaching together a plurality of plates of substrate material together to form a first stack; (b) releasably attaching together a plurality of plates of electrooptic material of the same thickness as the substrate plates to form a second stack; (c) positioning said first and second stacks until the plates in said stacks are aligned edge-to-edge and then permanently fastening the stacks together; (d) machining the fastened stacks to form a structure having a cross section resembling the desired light valve array, and forming addressable electrodes on the edges of said electrooptic plates; and (e) releasing the plurality of plates to provide a plurality of individual light valve arrays.
Claim 2
Independent Claim
142 words
A method of simultaneously making a plurality of light valve arrays, each having a substrate and plurality of transversely driven electrooptic gates connected to said substrate, said method comprising the steps of: (a) releasably attaching together a plurality of plates of substrate material together to form a first stack; (b) releasably attaching together a plurality of plates of electrooptic material of the same thickness as the substrate plates to form a second stack; (c) positioning said first and second stacks until the plates in said stacks are aligned edge-to-edge and then permanently fastening the stacks together; (d) machining the fastened stacks to form a structure having a cross section resembling the desired light valve array, and forming addressable electrodes on the edges of said electrooptic plates; and (e) releasing the plurality of plates to provide a plurality of individual light valve arrays.
Claim 3
Dependent Claim
23 words
The method of claim 1, wherein said plates are releasably attached with soluble adhesives, and said stacks are fastened together with insoluble adhesive.
Claim 4
Dependent Claim
17 words
The method of claim 1, wherein said plates are releasably attached with a selective heat releasable adhesive.
Claim 5
Dependent Claim
44 words
The method of claim 1, wherein said addressable electrodes are formed by metallizing a surface of said stack of electrooptic plates and sawing a plurality of evenly spaced, parallel grooves through said material in a direction generally perpendicular to the planes of said plates.
Claim 6
Dependent Claim
29 words
The method of claim 1, wherein said addressable electrodes are formed by forming a plurality of parallel stripes of metal across one surface of said stack of electrooptic plates.
Claim 7
Dependent Claim
111 words
In a method of simultaneously making a plurality of light valve arrays having transversely driven electrooptic gates, the improvement including the steps of: (a) releasably assembling (i) a plurality of plates of substrate material, and (ii) a plurality of electrooptic plates to form first and second stacks respectively; (b) permanently fastening the first and second stacks so that their respective plates are aligned edge-to-edge; (c) machining the aligned flrst and second stacks and metallizing a surface of the second stack to form addressable gate electrodes, thereby providing a plurality of fastened light valve arrays having substrates and electrooptic gates; and (d) separating the plurality of electrooptic gate arrays into individual arrays.
Claim 8
Dependent Claim
111 words
In a method of simultaneously making a plurality of light valve arrays having transversely driven electrooptic gates, the improvement including the steps of: (a) releasably assembling (i) a plurality of plates of substrate material, and (ii) a plurality of electrooptic plates to form first and second stacks respectively; (b) permanently fastening the first and second stacks so that their respective plates are aligned edge-to-edge; (c) machining the aligned flrst and second stacks and metallizing a surface of the second stack to form addressable gate electrodes, thereby providing a plurality of fastened light valve arrays having substrates and electrooptic gates; and (d) separating the plurality of electrooptic gate arrays into individual arrays.
Claim 9
Dependent Claim
17 words
The method of claim 6, wherein said plates are releasably attached with a selective heat releasable adhesive.
Claim 10
Independent Claim
152 words
A method of simultaneously making a plurality of light valve arrays each of which has a substrate, a plurality of transversely driven electrooptic gates secured to said substrate, and electrodes on a surface of the gates comprising the steps of: (a) cementing with a first adhesive that is dissolvable in a given solvent (i) a plurality of plates of electrooptic material and (ii) a plurality of plates of substrate material to form first and second stacks respectively; (b) cementing the first and second stacks with their respective plates aligned edge-to-edge with a second conductive adhesive that is not dissolvable in such solvant; (c) machining the aligned stacks to form a structure and metallizing a surface of the first stack to form electrodes; and (d) placing the structure in the given solvent which dissolves the first adhesive but not the second and thereby separates the structure into individual transversely driven light valve arrays.
Claim 11
Independent Claim
152 words
A method of simultaneously making a plurality of light valve arrays each of which has a substrate, a plurality of transversely driven electrooptic gates secured to said substrate, and electrodes on a surface of the gates comprising the steps of: (a) cementing with a first adhesive that is dissolvable in a given solvent (i) a plurality of plates of electrooptic material and (ii) a plurality of plates of substrate material to form first and second stacks respectively; (b) cementing the first and second stacks with their respective plates aligned edge-to-edge with a second conductive adhesive that is not dissolvable in such solvant; (c) machining the aligned stacks to form a structure and metallizing a surface of the first stack to form electrodes; and (d) placing the structure in the given solvent which dissolves the first adhesive but not the second and thereby separates the structure into individual transversely driven light valve arrays.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-02-10 | 1989-08-12 | 1990-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-10 | 1993-08-12 | 1994-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-10 | 1997-08-12 | 1998-02-11 | $7700.00 | Window Closed / Lapsed |