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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.:

US 9188786 B1

PDFFull Text
Date of Patent:
Nov. 17, 2015

Filed:

Nov. 30, 2012

Optical compensation film

Applicants:

Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do, KR;

Cheil Industries Inc., Kumi, Kyungsangbuk-do, KR;

Inventors:

Moon Yeon Lee, Osan-si, KR;

Hee Kyung Kim, Seongnam-si, KR;

Kyu Yeol In, Seoul, KR;

Jae Hyun Kim, Seoul, KR;

Hyung Jun Kim, Suwon-si, KR;

Won Cheol Jung, Seoul, KR;

Hyeon Ho Choi, Seoul, KR;

Woo Joong Kim, Uiwang-si, KR;

Kyoung Ah Oh, Seoul, KR;

Assignees:

SAMSUNG ELECTRONICS CO., LTD., , KR;

CHEIL INDUSTRIES INC., , KR;

Attorney:

Cantor Colburn LLP

Primary Examiner:

Ricky D Shafer

Int. Cl.
CPC ...
G02B 5/30 (2006.01); G02B 27/28 (2006.01); G02F 1/1335 (2006.01); G02B 27/12 (2006.01); G02B 27/10 (2006.01); G02B 27/26 (2006.01); G02B 5/32 (2006.01); G02F 1/13363 (2006.01); G02B 27/00 (2006.01); B32B 27/32 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); G09G 3/36 (2006.01);
U.S. Cl.
CPC ...
G02B 27/12 (2013.01); B32B 27/08 (2013.01); B32B 27/302 (2013.01); B32B 27/32 (2013.01); G02B 5/3025 (2013.01); G02B 5/3083 (2013.01); G02B 5/32 (2013.01); G02B 27/0018 (2013.01); G02B 27/10 (2013.01); G02B 27/26 (2013.01); G02B 27/28 (2013.01); G02F 1/13363 (2013.01); G02F 1/133634 (2013.01); G09G 3/36 (2013.01); B32B 2307/42 (2013.01); G02F 2413/03 (2013.01); G02F 2413/07 (2013.01); G02F 2413/13 (2013.01); G02F 2413/14 (2013.01); G09G 2300/0491 (2013.01);
Abstract

An optical compensation film includes: a first layer having positive birefringence; a second layer on the first layer and having negative birefringence; and a third layer on the second layer and having positive birefringence. A retardation value of the optical compensation film for incident light having a wavelength of about 550 nm is about 135 nm to about 145 nm, and a ratio of a thickness of the first layer or of the third layer to a thickness of the second layer is about 1.1 to 2.2.

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