The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 25, 2012
Filed:
Jan. 11, 2010
Applicants:
Chin-hung Lin, Taipei County, TW;
Chao-lung Chang, Miaoli County, TW;
Inventors:
Chin-Hung Lin, Taipei County, TW;
Chao-Lung Chang, Miaoli County, TW;
Assignee:
Darfon Electronics Corp., Taoyuan, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03M 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A light-emitting keyboard is disclosed, which comprises: a light guide plate, configured with a light entrance surface, a light emitting surface and a via hole; a light source, disposed next to the light entrance surface of the light guide plate; a frame, disposed on the light emitting surface of the light guide plate; an opaque material disposed on the via hole. With the aforesaid structure, light from the light source can be prevented from being emitting out from the via hole and thus can be evenly emitted out of the light guide plate.