Mask and deposition apparatus including the same
US11891688B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2022 |
| Grant date | Feb 6, 2024 |
| Priority date | — |
| Expiry date | May 19, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K71/166
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A mask includes a protruding portion provided with a deposition hole formed therethrough and including an upper surface, a lower surface facing the upper surface, and a side surface disposed between the upper surface and the lower surface and inclined at an angle with respect to the lower surface, a peripheral portion including a first surface extending from the upper surface, a second surface facing the first surface and having a step difference with respect to the lower surface of the protruding portion, and a coating layer disposed on the protruding portion. The protruding portion includes at least one of a protrusion protruded from the side surface of the protruding portion and a groove formed by removing at least a portion of the protruding portion from the side surface of the protruding portion, and the coating layer covers at least one of the protrusion and the groove.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.