Barrier layer for thick film dielectric electroluminescent displays
First Claim
1. A sub-structure of a thick film dielectric electroluminescent display, the sub-structure comprising, in sequence:
- a substrate;
a barrier layer;
a lower electrode; and
a thick film dielectric layer,the barrier layer being chemically inert with respect to the substrate and the lower electrode, the barrier layer inhibiting diffusion of at least one chemical species therethrough.
6 Assignments
0 Petitions
Accused Products
Abstract
A novel sub-structure of a thick film dielectric electroluminescent display and a thick film dielectric electroluminescent display incorporating the same is provided. The sub-structure comprises a barrier layer between a substrate and a thick film dielectric layer. The barrier layer is chemically inert with respect to the substrate and the thick film dielectric layer and the barrier layer inhibits diffusion of at least one chemical species therethrough. This sub-structure results in a higher capacitance for the thick dielectric layer, which provides higher display luminance and a reduced tendency for dielectric breakdown of the thick dielectric layer. The barrier layer permits for lower cost substrates, such as glass, to be used.
17 Citations
44 Claims
-
1. A sub-structure of a thick film dielectric electroluminescent display, the sub-structure comprising, in sequence:
-
a substrate; a barrier layer; a lower electrode; and a thick film dielectric layer, the barrier layer being chemically inert with respect to the substrate and the lower electrode, the barrier layer inhibiting diffusion of at least one chemical species therethrough. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A sub-structure of a thick film dielectric electroluminescent display, the sub-structure comprising, in sequence:
-
a substrate; a lower electrode; a barrier layer; and a thick film dielectric layer, the barrier layer being chemically inert with respect to the lower electrode and the thick film dielectric layer, the barrier layer inhibiting diffusion of at least one chemical species therethrough. - View Dependent Claims (26, 27, 28, 29, 30)
-
-
31. A method for making a sub-structure for use in a thick film dielectric electroluminescent display, the method comprising;
-
i) depositing a barrier layer onto a substrate; ii) depositing a lower electrode onto the barrier layer; and iii) depositing a thick film dielectric layer onto the lower electrode, the barrier layer being chemically inert with respect to the substrate and the lower electrode, the barrier layer inhibiting diffusion of at least one chemical species therethrough. - View Dependent Claims (32, 33)
-
-
34. A method for making a sub-structure for use in a thick film dielectric electroluminescent display, the method comprising;
-
i) depositing a lower electrode onto a substrate; ii) depositing a barrier layer onto the lower electrode; and iii) depositing a thick film dielectric layer onto the lower electrode, the barrier layer being chemically inert with respect to the lower electrode and the thick film dielectric layer, the barrier layer inhibiting diffusion of at least one chemical species therethrough. - View Dependent Claims (35, 36, 37, 38, 39, 40)
-
- 41. A sub-structure of a thick film dielectric electroluminescent display, the sub-structure comprising a barrier layer between a substrate and a thick film dielectric layer, the barrier layer being chemically inert with respect to the substrate and the thick film dielectric layer, the barrier layer inhibiting diffusion of at least one chemical species therethrough.
-
44. A sub-structure of a thick film dielectric electroluminescent display, the sub-structure comprising, in sequence:
-
a substrate; a barrier layer inhibiting diffusion of at least one chemical species therethrough; a lower electrode; and a composite thick film dielectric layer, the barrier layer being chemically inert with respect to the substrate and the lower electrode, the barrier layer having physical properties such that internal stress is minimized during fabrication of the sub-structure and the barrier layer and other layers of the sub-structure and display remain substantially crack-free.
-
Specification