Organic light emitting display device
US10811480B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Dec 12, 2018 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Dec 12, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/549
Abstract
An organic light emitting display (OLED) device includes a substrate, a semiconductor element on the substrate, a planarization layer on the semiconductor, and a light emitting structure on the planarization layer. The planarization layer includes a contact hole exposing a portion of the semiconductor and a plurality of grooves surrounding the contact hole. The light emitting structure is electrically connected to the semiconductor element via the contact hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.