US5371433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flat electron display device with spacer and method of making
Assignee: US Philips Corp
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Filing: 1994-02-10
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Granted: 1994-12-06
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Expires: 2014-02-10
Abstract
Abstract In a flat display device, for example, a luminescent display a spacer structure (5) is provided between two substrates (1, 3). To this end a mask (9, 15) consisting, if necessary, of a plurality of layers is incorporated in a photosensitive material (8, 13). After exposure, development and removal of the mask, the desired spacer structure is obtained.
Inventors
- 👤 Remko Horne
- 👤 Maarten A. Van Andel
- 👤 Gerardus N. A. Van Veen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:40
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/18; H01J9/185; H01J29/00; H01J29/02; H01J29/028; H01J29/86; H01J29/864; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/123; H01J31/125; H01J31/127; H01J9/24; H01J9/241; H01J9/242; H01J2329/00; H01J2329/86; H01J2329/8625; H01J2329/863; H01J2329/864
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
130 words
A display device comprising an electron emitting surface and, at a small distance of at least 200 μm opposite said electron emitting surface, a surface comprising phosphor elements, the surfaces being held at said distance by means of a spacer matrix said spacer matrix being formed by an in-situ curing of an applied curable organic polymer material and characterized in that the part of the spacer matrix adjoining the surface comprising phosphor elements is formed of adjacent walls extending in the direction of the electron emitting surface, said walls forming a matrix of closed cells, each cell enclosing one of said phosphor elements and the part of the spacer matrix adjoining the electron emitting surface comprising a matrix of columns said columns extending to and being integral with said walls.
Claim 2
Dependent Claim
130 words
A display device comprising an electron emitting surface and, at a small distance of at least 200 μm opposite said electron emitting surface, a surface comprising phosphor elements, the surfaces being held at said distance by means of a spacer matrix said spacer matrix being formed by an in-situ curing of an applied curable organic polymer material and characterized in that the part of the spacer matrix adjoining the surface comprising phosphor elements is formed of adjacent walls extending in the direction of the electron emitting surface, said walls forming a matrix of closed cells, each cell enclosing one of said phosphor elements and the part of the spacer matrix adjoining the electron emitting surface comprising a matrix of columns said columns extending to and being integral with said walls.
Claim 3
Dependent Claim
15 words
The display device of claim 1 wherein said surfaces are at most 1 mm apart.
Claim 4
Dependent Claim
19 words
The display device of claim 1 wherein the surface comprising phosphor elements is a surface of a glass substrate.
Claim 5
Dependent Claim
20 words
The device of claim 1 wherein said spacer matrix is intersected by at least one layer of a conducting material.
Claim 6
Dependent Claim
19 words
The display device of claim 2 wherein the surface comprising phosphor elements is a surface of a glass substrate.
Claim 7
Dependent Claim
20 words
The device of claim 2 wherein said spacer matrix is intersected by at least one layer of a conducting material.
Claim 8
Dependent Claim
20 words
The device of claim 3 wherein said spacer matrix is intersected by at least one layer of a conducting material.
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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) | 1997-12-05 | 1998-06-06 | 1998-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-05 | 2002-06-06 | 2002-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-05 | 2006-06-06 | 2006-12-06 | $7700.00 | Window Closed / Lapsed |