Light-emitting display device
US12176382B2 · kind B2 · utility
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20Claims
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Assignee
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Key dates
| Filing date | Dec 8, 2021 |
| Grant date | Dec 24, 2024 |
| Priority date | — |
| Expiry date | Feb 15, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/351
Abstract
A light-emitting display device includes: a substrate, a plurality of pixels on the substrate, each pixel including an opening area, a light extraction pattern disposed in each opening area, the light extraction pattern including: a plurality of concave portions spaced apart from each other, and a protruding portion surrounding each of the plurality of concave portions, and a light-emitting device layer including: a light-emitting layer over the light extraction pattern, and a non-emission area overlapping a top portion of the protruding portion between the two adjacent concave portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.