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:
Sep. 09, 2014
Filed:
Jun. 01, 2011
Applicants:
Kyoung Chan Lee, Seoul, KR;
Gun Ho Lee, Seoul, KR;
Inventors:
Kyoung Chan Lee, Seoul, KR;
Gun Ho Lee, Seoul, KR;
Assignee:
Kortek Corporation, , KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1335 (2006.01); G02F 1/00 (2006.01); G07F 17/32 (2006.01);
U.S. Cl.
CPC ...
G02F 1/133602 (2013.01); G07F 17/3211 (2013.01); G02F 1/00 (2013.01);
Abstract
A display device including a sub-backlight unit which can prevent the obscure sights caused by light from the light source of the sub-backlight unit arriving on an article or reel of the main display screen and then reflecting in the frontal direction is provided. The sub-backlight unit includes a second light guide panel having an opening part formed therein corresponding to a transparent window, a second light source disposed around the second light guide panel, and a polymer dispersed liquid crystal (PDLC) sheet disposed close to the front side of the opening of the second light guide panel.