Method of manufacturing a keypad structure having a transparent keycap and keypad structure having a transparent keycap
US8022324B2 · kind B2 · utility
8Cited by
10References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 8, 2009 |
| Grant date | Sep 20, 2011 |
| Priority date | — |
| Expiry date | Jun 5, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49105
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a method of manufacturing a keypad structure having a transparent keycap and a keypad structure having a transparent keycap. A metal pattern layer is formed on a transparent resin layer of a keycap component. Two print layers are formed on a transparent resin layer of an overprint component. Two print layers and the metal pattern layer are overlapped and have a level difference in height of the total thickness of the two transparent layers. Accordingly, the figure of the keypad seems to be floated and is felt to be three-dimensional.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.