US 11,894,201 B1
Illuminated keyboard
Shih-Pin Lin, Taichung (TW); and Chao-Chieh Yang, Taichung (TW)
Assigned to SUNREX TECHNOLOGY CORP., Taichung (TW)
Filed by SUNREX TECHNOLOGY CORP., Taichung (TW)
Filed on Nov. 1, 2022, as Appl. No. 17/978,353.
Claims priority of application No. 111128646 (TW), filed on Jul. 29, 2022.
Int. Cl. H01H 13/705 (2006.01); H01H 13/83 (2006.01)
CPC H01H 13/705 (2013.01) [H01H 13/83 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An illuminated keyboard, comprising:
a supporting plate;
an electrical circuit unit disposed above said supporting plate, and including
a bottom circuit membrane disposed adjacent to said supporting plate, and having a bottom conductive portion,
an intermediate partition plate disposed above said bottom circuit membrane, and having an intermediate through hole aligned with said bottom conductive portion and a plurality of bottom perforated holes surrounding said intermediate through hole, and
a top circuit membrane disposed above said intermediate partition plate, and having a top conductive portion aligned with said intermediate through hole and said bottom conductive portion, and a plurality of top perforated holes surrounding said top conductive portion;
a light emitter unit disposed on said bottom circuit membrane and including a plurality of light emitters surrounding said bottom conductive portion, each of said plurality of light emitters protruding through a respective one of said bottom perforated holes toward a respective one of said top perforated holes;
a light diffusion layer disposed above said top circuit membrane and having a light transmission region for transmitting light rays generated from said plurality of light emitters;
an elastic member made of an elastic material, aligned with said top conductive portion and disposed above and on said light diffusion layer;
a bridging unit disposed above said light diffusion layer and aligned with said elastic member; and
a keycap disposed above and connected to said bridging unit, said elastic member elastically abutting against said keycap, said keycap being light permeable.