US 7,321,411 B2
Liquid crystal display including compensation film
Kyeong-Hyeon Kim, Yongin (Korea, Republic of); Yun Jang, Yongin (Japan); and Jang-Kun Song, Seoul (Korea, Republic of)
Assigned to Samsung Electronics Co., Ltd., Suwon-Si, Gyeonggi-do (Korea, Republic of)
Filed on Dec. 23, 2003, as Appl. No. 10/745,940.
Claims priority of application No. 10-2002-0083710 (KR), filed on Dec. 24, 2002.
Prior Publication US 2004/0160559 A1, Aug. 19, 2004
Int. Cl. G02F 1/1335 (2006.01)
U.S. Cl. 349—118  [349/119] 30 Claims
OG exemplary drawing
 
1. A liquid crystal display comprising:
a first panel;
a second panel facing the first panel;
a liquid crystal layer interposed between the first panel and the second panel;
a biaxial compensation film disposed on an outer surface of the first panel;
a first polarizing film disposed on an outer surface of the biaxial compensation film;
a C-plate uniaxial compensator disposed on an outer surface of the second panel and having a horizontal retardation lower than about 10 nm and
a second polarizing film disposed on an outer surface of the C-plate uniaxial compensator,
wherein the C-plate uniaxial compensator has a vertical retardation (Rth(c-plate)) and the biaxial compensation film has a horizontal retardation R0(biaxial) and a vertical retardation Rth(biaxial) satisfying:
R0(biaxial)=[0.0028×(Rth(e-plate)2−0.00833×Rth(c-plate)+50]±‥nm; and
Rth(biaxial)=[−0.0007×(Rth(c-plate))2−0.9583×Rth(c-plate)+165]±20 nm.