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:
Nov. 26, 2013
Filed:
Nov. 16, 2011
Ching-cheng Tsai, Taipei, TW;
Ching-Cheng Tsai, Taipei, TW;
Chicony Electronics Co., Ltd., New Taipei, TW;
Abstract
A illuminant keyboard device includes a bottom frame having a plurality of latch parts, a plurality of keying units disposed on the bottom frame, a membrane switch interposed between the bottom frame and the keying units, a light guide plate interposed between the membrane switch and the bottom frame, a least a light source disposed on predetermined position of the light guide plate, a plate interposed between the membrane switch and the light guide plate and a light-shielding plate interposed between the membrane switch and the keying units. The light guide plate has a plurality of first holes and the plate has a plurality of second holes, the diameter of each of the first holes is larger than the diameter of each of the second holes.