Organic EL display device and method of making
AssigneeTDK Corporation
InventorMitsufumi Codama
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Abstract
The invention provides an organic EL display device comprising a plurality of organic EL elements each having at least a first electrode, one or more organic layers participating in light emission capability, and a second electrode, the elements being able to be independently electrically operated to emit light, and a groove structure at the boundary between adjacent organic EL elements for isolating at least one of the electrodes between the adjacent organic EL elements. The organic EL display device featuring a greater proportion of light emitting region, higher reliability, a large size of substrate, a more number of elements arrayed in one substrate, and a reduced cost of manufacture is obtained as well as a method for the manufacture thereof.
Claims6
A method for preparing an organic electroluminescent display device comprising the steps of:
- forming a groove structure in an insulative substrate or an underlying layer on the substrate,
- forming a first electrode,
- forming at least an organic layer participating in light emission capability, and
- depositing a second electrode,
- wherein the step of depositing a second electrode uses a process having low step coverage whereby said second electrode is isolated by the resulting groove structure.
Dependencies are inferred from the claim text.