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:
Apr. 28, 2015
Filed:
Oct. 28, 2010
Jin-hwan Kim, Suwon-si, KR;
Seong-mo Hwang, Seongnam-si, KR;
Seung-ho Nam, Seongnam-si, KR;
Jee-hong Min, Seongnam-si, KR;
Won-ki Hong, Suwon-si, KR;
Jin-Hwan Kim, Suwon-si, KR;
Seong-Mo Hwang, Seongnam-si, KR;
Seung-Ho Nam, Seongnam-si, KR;
Jee-Hong Min, Seongnam-si, KR;
Won-Ki Hong, Suwon-si, KR;
Samsung Display Co., Ltd., , KR;
Abstract
An object-sensing device is presented. The device includes a waveguide and a substrate holding a liquid crystal layer, wherein radiation propagates through the waveguide via total internal reflection. A radiation emitting element is positioned along a radiation input surface of the waveguide, and a radiation receiving element is positioned to receive radiation exiting the waveguide. The radiation receiving element may be positioned across the waveguide from the radiation emitting element. Alternatively, the radiation receiving element may be positioned on a surface that contacts the radiation input surface of the waveguide that is optically coupled to the radiation emitting element.