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:
Mar. 20, 2018
Filed:
May. 10, 2013
Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Cheil Industries Inc., Gumi-si, Gyeongsangbuk-do, KR;
Kyu Yeol In, Seoul, KR;
Hee Kyung Kim, Seongnam-si, KR;
Won Cheol Jung, Seoul, KR;
Hyung Jun Kim, Suwon-si, KR;
Kyoung Ah Oh, Seoul, KR;
Moon Yeon Lee, Osan-si, KR;
Myung Sup Jung, Seongnam-si, KR;
SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do, KR;
CHEIL INDUSTRIES, INC., Gyeongsangbuk-Do, KR;
Abstract
An optical film includes: a polarization layer; a first phase retardation layer having an optic axis at an angle in a range from about 17 degrees to about 27 degrees or from about −27 degrees to about −17 degrees with respect to a transmission axis of the polarization layer; and a second phase retardation layer having an optic axis at an angle in a range from about 85 degrees to about 95 degrees with respect to the transmission axis of the polarization layer. The polarization layer, the first phase retardation layer, and the second phase retardation layer are deposited in sequence, the first phase retardation layer is a half-wave plate, the second phase retardation layer is a quarter-wave plate, and out-of-plane retardation values of the first phase retardation layer and the second phase retardation layer for incident light having the standard wavelength have opposite signs.