Gas showerhead with controllable airflow distribution
US12351916B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2021 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Sep 20, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Provided is a gas showerhead with controllable airflow distribution, disposed in a cavity of a thin film deposition device and including: a first-layer panel, having a plurality of first gas supply holes distributed according to a first rule; and a second-layer panel, seated on the first-layer panel and having a plurality of second gas supply holes distributed according to a second rule. The first rule is different from the second rule, and one of the first-layer panel and the second-layer panel is capable of rotating at least by a specific angle relative to the other, so that the two panels have a first position and a second position that are different relative to each other. At the first position, none of the first gas supply holes is covered by the second-layer panel; and at the second position, a portion of the first gas supply holes are aligned with the corresponding second gas supply holes, and the other portion of the first gas supply holes are covered by the second-layer panel. The gas showerhead can adjust the airflow distribution and the airflow rate, which helps to meet the spraying requirements of different thin film deposition processes, and improves the uniformity of …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.