Manufacturing method of color keypad for a contact of character illumination rubber switch
US6180048A · kind A · utility
42Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1999 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Jun 4, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2009/187
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A manufacturing method of a keypad for a contact character illumination rubber switch composed of a surface enriched in color design variations is provided. The method includes forming a black or gray intermediate layer (3) on a surface portion of a color keypad member (1) for a contact character illumination switch of the mobile communication system, electric equipment components for cars or the like. A colored surface layer (4) is formed thereon with any color. A laser beam is applied from the upper side thereof for burning up and removing the intermediate layer and the colored surface layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.