Patent US4396864A successfully refreshed from Google Patents.
US4396864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent display component
Assignee: PLANAR INTERNATIONAL A CORP OF FINLAND Oy
•
Filing: 1981-04-06
•
Granted: 1983-08-02
•
Expires: 2001-04-06
Abstract
Abstract Disclosed herein is an electroluminescence display component comprising, in sandwich arrangement, a transparent substrate made of, e.g., glass and two thin film structures, each comprising two electrode layers and a luminescence layer disposed between said electrode layers. A light filter layer is disposed between the different thin film structures for realizing a double color display. The light filter layer can be an integral layer made of homogeneous material or a sandwich structure comprising, e.g., two epoxy layers functioning as adhesive layers and a colored tape or similar element disposed between said epoxy layers.
Inventors
- 👤 Tuomo S. Suntola
- 👤 Jorma O. Antson
- 👤 Ralf Graeffe
- 👤 Sven G. Lindfors
- 👤 Arto J. Pakkala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:10
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/22
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
58 words
An electroluminescence display component comprising: (a) at least one transparent substrate made of, e.g., glass; (b) at least two thin film structures, each comprising two electrode layers and a luminescence layer disposed between said electrode layers; and (c) at least one light filter layer disposed between said two thin film structures for realizing at least a two-colour display.
Claim 2
Dependent Claim
58 words
An electroluminescence display component comprising: (a) at least one transparent substrate made of, e.g., glass; (b) at least two thin film structures, each comprising two electrode layers and a luminescence layer disposed between said electrode layers; and (c) at least one light filter layer disposed between said two thin film structures for realizing at least a two-colour display.
Claim 3
Dependent Claim
20 words
A component as claimed in claim 1, wherein the light filter layer is an integral layer made of homogeneous material.
Claim 4
Dependent Claim
33 words
A component as claimed in claim 1, wherein the light filter layer is a sandwich structure comprising two epoxy layers functioning as adhesive layer and a coloured tape disposed between said epoxy layers.
Claim 5
Dependent Claim
19 words
A component as claimed in claim 1, wherein the light filter layer is made of a separate colour film.
Claim 6
Dependent Claim
23 words
A component as claimed in claim 1, wherein the light filter layer is a transparent, coloured substrate disposed between the thin film structures.
Claim 7
Dependent Claim
19 words
A component as claimed in claim 5, wherein the substrate is a glass layer blended with some organic pigment.
Claim 8
Dependent Claim
34 words
A component as claimed in claim 1, comprising two light filter layers having different colours and being disposed between alternate ones of three of said thin film structures for realizing a triple colour display.
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) | 1986-08-01 | 1987-01-31 | 1987-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-01 | 1991-01-31 | 1991-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-01 | 1995-01-31 | 1995-08-02 | $7700.00 | Window Closed / Lapsed |