Organic light emitting display device
US11800773B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2021 |
| Grant date | Oct 24, 2023 |
| Priority date | — |
| Expiry date | May 5, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/351
Abstract
An organic light emitting display device includes a substrate having a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel arranged in a quad type of a 2×2 matrix form, a first color filter disposed in the first sub-pixel, a second color filter disposed in the second sub-pixel, a third color filter disposed in the third sub-pixel, and a planarization layer covering the first to third color filters, wherein the planarization layer has a concave portion of a lens shape in the fourth sub-pixel, wherein the concave portion has a width greater than that of the fourth sub-pixel. Accordingly, the organic light emitting display device with improved light extraction efficiency of the fourth sub-pixel may be implemented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.