Patent ID: 11894201
Assignee: SUNREX TECHNOLOGY CORP.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The illuminated keyboard as claimed in claim 1, wherein:
said electrical circuit unit further includes a first transparent water-proof layer disposed between said bottom circuit membrane and said intermediate partition plate, a second transparent water-proof layer disposed between said intermediate partition plate and said top circuit membrane, and a third transparent water-proof layer disposed between said top circuit membrane and said light diffusion layer;
said first transparent water-proof layer has a first through hole aligned with said bottom conductive portion, and a plurality of first perforated holes surrounding said first through hole;
said second transparent water-proof layer has a second through hole aligned with said bottom conductive portion, and a plurality of second perforated holes surrounding said second through hole;
said third transparent water-proof layer has a third through hole aligned with said bottom conductive portion; and
each of said first perforated holes cooperates with a respective one of said bottom perforated holes, a respective one of said second perforated holes, and a respective one of said top perforated holes to define a light source chamber that accommodates a respective one of said plurality of light emitters.