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US 11,696,378 B2Granted
Electroluminescent cells
AssigneeHewlett-Packard Development Company, L.P.
InventorsSamer Farran, Yaron Grinwald
Life of this patent
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Abstract
An electroluminescent cell can comprise a first electrode; a second electrode; and an electroluminescent layer disposed between the first electrode and the second electrode. The second electrode can comprise a light-transmitting electrode layer that can comprise electrically conductive regions interspersed by light-transmitting regions. The light-transmitting regions can have higher light-transmissivity than the electrically conductive regions.
Claims18
An electroluminescent cell, comprising:
- a first electrode;
- a second electrode;
- and
- an electroluminescent layer disposed between the first electrode and the second electrode,
- wherein the second electrode defines electrically conductive regions and light-transmitting regions interspersed among the electrically conductive regions with the electrically conductive regions formed from an electrophotographic composition including a thermoplastic polymer and an electrically conductive pigment, and wherein the light-transmitting regions have a higher light-transmissivity compared to the electrically conductive regions.
2 more elements
A method of making an electroluminescent cell, the method comprising:
- forming a first electrode;
- disposing an electroluminescent layer over the first electrode;
- and
- forming a second electrode over the electroluminescent layer by electrophotographically printing an electrophotographic composition including a thermoplastic polymer and an electrically conductive pigment,
- the second electrode defining electrically conductive regions that are formed from the electrophotographic composition, wherein light-transmitting regions are interspersed among the electrically conductive regions and the light-transmitting regions having a higher light-transmissivity compared to the electrically conductive regions.
2 more elements
Dependencies are inferred from the claim text.