Multi-color electroluminescent display
First Claim
1. A thick film multi-color display comprising:
- a transparent substrate;
a transparent electrode deposited thereon;
a phosphor layer deposited thereon, said phosphor layer having at least two regions having different overall compositions providing visually distinct spectra of light, said compositions selected to luminesce when placed in a common electric field;
a dielectric layer deposited onto said phosphor layer; and
a second electrode deposited on to said dielectric layer.
4 Assignments
0 Petitions
Accused Products
Abstract
A thick-film multi-color electroluminescent display (10) includes a transparent substrate (12), a transparent electrode (14) deposited on the substrate (12), a phosphor layer (16) deposited on the transparent electrode (14) having two regions (18, 20) having different compositions providing visually distinct spectra of light when placed in a common electric field, a dielectric layer (22) deposited on the phosphor layer (16), and a second electrode (24) deposited on the dielectric layer (22). In an alternate embodiment, the phosphor layer (16) is composed of a marbled ink having a mixture of a first phosphor ink and a second phosphor ink having different compositions providing visually distinct spectra of light when placed in a common electric field. In another alternate embodiment, the phosphor layer (16) is composed of at least two halftone screen prints corresponding to at least two phosphor compositions providing visually distinct spectra of light when placed in a common electric field.
37 Citations
6 Claims
-
1. A thick film multi-color display comprising:
-
a transparent substrate; a transparent electrode deposited thereon; a phosphor layer deposited thereon, said phosphor layer having at least two regions having different overall compositions providing visually distinct spectra of light, said compositions selected to luminesce when placed in a common electric field; a dielectric layer deposited onto said phosphor layer; and a second electrode deposited on to said dielectric layer. - View Dependent Claims (2, 3)
-
-
4. A thick film multi-color display comprising:
-
a transparent substrate; a transparent electrode deposited thereon; a phosphor layer deposited onto said transparent electrode, said phosphor layer being formed using a marbled ink, said marbled ink comprising a mixture of a first phosphor ink and a second phosphor ink, said first phosphor ink and said second phosphor ink having compositions such that when said phosphor layer is placed in an electric field, said first phosphor ink and said second phosphor ink luminesce with light having visually different colors; a dielectric layer deposited onto said phosphor layer; and a second electrode deposited onto said dielectric layer. - View Dependent Claims (5)
-
-
6. A thick film multi-color display comprising:
-
a transparent substrate; a transparent electrode deposited thereon; a phosphor layer deposited thereon, said phosphor layer being deposited with at least two halftone screens, each of said at least two halftone screens being used to deposit a corresponding one of at least two phosphor compositions providing a visually distinct spectrum of light, said phosphor compositions selected to luminesce when placed in a common electric field; a dielectric layer deposited onto said phosphor layer; and a second electrode deposited on to said dielectric layer.
-
Specification
-
- Resources
-
Current AssigneeTechnomark, Inc.
-
Original AssigneeLeading Edge Industries, Inc.
-
InventorsLaPointe, Bradley J.
-
Primary Examiner(s)Horabik, Michael
-
Assistant Examiner(s)DAY, MICHAEL HENRY
-
Application NumberUS08/388,062Time in Patent Office719 DaysField of Search313/502, 313/503, 313/506, 313/509, 313/510, 313/513, 40/544, 445/36, 445/45, 362/23US Class Current313/503CPC Class CodesH05B 33/145 Arrangements of the electro...
