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:
Jan. 21, 2014
Filed:
Dec. 17, 2010
Jin-hwan Kim, Suwon-si, KR;
Hyun-min Cho, Seoul, KR;
Guk-hyun Kim, Yongin-si, KR;
Jong-hee Kim, Hwaseong-si, KR;
Hyun-jin Cho, Seoul, KR;
Jin-Hwan Kim, Suwon-si, KR;
Hyun-Min Cho, Seoul, KR;
Guk-Hyun Kim, Yongin-si, KR;
Jong-Hee Kim, Hwaseong-si, KR;
Hyun-Jin Cho, Seoul, KR;
Samsung Display Co., Ltd, Yongin, Gyeonggi-Do, KR;
Abstract
A light waveguide has a rectangular plate shape and is configured to totally reflect internal light arriving at an angle greater than a critical angle. Light emitting parts are disposed at corners of the light waveguide. Each of the light emitting parts emits light once in a period. A first light receiving part is disposed along a first side surface of the light waveguide, and receives light emitted from the light emitting parts adjacent to a second side surface facing the first side surface of the light waveguide. The second light receiving part is disposed along the second side surface of the light waveguide, and receives light emitted from the light emitting parts adjacent to the first side surface. A detecting part detects a touch position based on an amount of the light received by the first and second light receiving parts.