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. 15, 2015
Filed:
Jul. 14, 2011
Byung-mook Kim, Daegu, KR;
Kwang-seung Park, Daejeon, KR;
Byung-su Park, Daejeon, KR;
Yune-hyoun Kim, Daejeon, KR;
Sang-choll Han, Daejeon, KR;
Jin-hyun Kim, Daejeon, KR;
Byung-Mook Kim, Daegu, KR;
Kwang-Seung Park, Daejeon, KR;
Byung-Su Park, Daejeon, KR;
Yune-Hyoun Kim, Daejeon, KR;
Sang-Choll Han, Daejeon, KR;
Jin-Hyun Kim, Daejeon, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
The present invention relates to an optical film having improved optical performance and to a backlight unit comprising the same. More particularly, the present invention relates to a microlens array (MLA) sheet which comprises a base unit and a lens unit formed on one side of the base unit, wherein the lens unit consists of a plurality of conical lenses. Existing hemispherical microlens array sheets have limitations in terms of improving luminance, and therefore cannot replace prism sheets in high luminance product s. However, the microlens array sheet consisting of conical lenses of the present invention can improve both luminance and viewing angle characteristics.