Mask frame assembly and evaporation device
US11414739B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 6, 2017 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Dec 29, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K71/166
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A mask frame assembly, including: a hollow frame, which is provided with a hollow area; and a first howling stick, disposed across the hollow area of the hollow frame in a first direction; wherein the mask frame assembly is configured to support a fine metal mask plate which includes a mask pattern area and an invalid mask area surrounding the mask pattern area; in a state of the fine metal mask plate being supported by the mask frame assembly, opposite ends of the fine metal mask plate are fixed on the hollow frame in a second direction; the mask pattern area of the fine metal mask plate is disposed in the hollow area of the hollow frame; and a projection of the first howling stick on the fine metal mask plate is in the invalid mask area. An evaporation device is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.