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:
Jul. 01, 2014
Filed:
Aug. 31, 2011
Applicants:
Soo-hyun Lee, Seoul, KR;
Seok-gyu Lee, Gyeonggi-do, KR;
Cheol-hee Kim, Seoul, KR;
Inventors:
Assignee:
Samsung Electronics Co., Ltd., Yeongtong-gu, Suwon-si, Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H 9/26 (2006.01); H01H 13/72 (2006.01); H01H 13/76 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided is a keypad apparatus for a portable communication device structured to have a Printed Circuit Board (PCB) including a plurality of dome switches and a plurality of Light-Emitting Diodes (LEDs). The keypad apparatus includes a waveguide sheet portion provided on the dome switches, a plurality of printed surfaces which are printed on a top surface of the waveguide sheet portion and adjust a brightness of light from the LEDs, in a stepwise manner from a position distant from the LEDs to a position adjacent to the LEDs, and a keypad provided on the printed surfaces.