Manufacturing method of organic light-emitting display and mask assembly
US10868268B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2019 |
| Grant date | Dec 15, 2020 |
| Priority date | — |
| Expiry date | May 29, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K71/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of manufacturing a display device includes preparing a pixel circuit substrate including thin-film transistors and pixel electrodes respectively electrically connected to the thin-film transistors, forming a first deposition layer on the pixel circuit substrate using a first mask assembly, and forming a second deposition layer on the pixel circuit substrate using a second mask assembly. At least one of the first mask assembly and the second mask assembly includes a mask plate including an opening portion through which a deposition material passes and a covering portion that blocks a passage of the deposition material. The mask plate includes a protruding portion that protrudes from an edge of the covering portion toward a center region of the opening portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.