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:
May. 26, 2015
Filed:
Jul. 30, 2013
Primax Electronics Ltd., Neihu, Taipei, TW;
Chung-Yuan Chen, Taipei, TW;
Hsuan-Wei Ho, Taipei, TW;
PRIMAX ELECTRONICS LTD., Taipei, TW;
Abstract
A luminous keyboard device includes plural keys, a supporting plate, a light-emitting element, a membrane switch circuit module, and a light guide plate. The light guide plate is thicker than the light guide plate. The supporting plate has an opening corresponding to the light-emitting element. The light-emitting element is inserted into the opening. The light-emitting element is used for emitting plural light beams. A portion of the plural light beams are traveled along the path under the supporting plate and introduced into the light guide plate. Consequently, the portion of the plural light beams will be directed to the plural keys to illuminate the plural keys. Another portion of the plural light beams are traveled along the path over the supporting plate and introduced into the membrane switch circuit module. Consequently, the luminous efficiency of the slim-type luminous keyboard device is enhanced.