US 12,078,832 B2
Optically anisotropic layer, method of manufacturing the same, laminate, method of manufacturing the same, polarizing plate, liquid crystal display device, and organic EL display device
Ayako Muramatsu, Kanagawa (JP); Shinnosuke Sakai, Kanagawa (JP); Teruki Niori, Kanagawa (JP); and Shinichi Morishima, Kanagawa (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Jun. 8, 2023, as Appl. No. 18/331,810.
Application 18/331,810 is a continuation of application No. 17/858,650, filed on Jul. 6, 2022, granted, now 11,740,398.
Application 17/858,650 is a continuation of application No. 16/688,294, filed on Nov. 19, 2019, granted, now 11,435,510, issued on Sep. 6, 2022.
Application 16/688,294 is a continuation of application No. 16/026,600, filed on Jul. 3, 2018, granted, now 10,527,766, issued on Jan. 7, 2020.
Application 16/026,600 is a continuation of application No. 14/482,292, filed on Sep. 10, 2014, granted, now 10,048,416, issued on Aug. 14, 2018.
Claims priority of application No. 2013-188162 (JP), filed on Sep. 11, 2013; application No. 2014-072290 (JP), filed on Mar. 31, 2014; and application No. 2014-114182 (JP), filed on Jun. 2, 2014.
Prior Publication US 2023/0314680 A1, Oct. 5, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 5/30 (2006.01); C09K 19/12 (2006.01); C09K 19/20 (2006.01); C09K 19/24 (2006.01); C09K 19/30 (2006.01); C09K 19/32 (2006.01); C09K 19/34 (2006.01); C09K 19/04 (2006.01)
CPC G02B 5/3016 (2013.01) [C09K 19/12 (2013.01); C09K 19/2007 (2013.01); C09K 19/2028 (2013.01); C09K 19/24 (2013.01); C09K 19/3068 (2013.01); C09K 19/32 (2013.01); C09K 19/322 (2013.01); C09K 19/3447 (2013.01); C09K 19/3486 (2013.01); C09K 19/3491 (2013.01); C09K 19/3497 (2013.01); G02B 5/305 (2013.01); G02B 5/3083 (2013.01); C09K 2019/0448 (2013.01); C09K 2019/2078 (2013.01); C09K 2019/3077 (2013.01); C09K 2019/3408 (2013.01); C09K 2019/3416 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A laminate comprising an optically anisotropic layer and a uniaxial birefringence layer,
wherein
a polymerizable composition, containing one or more polymerizable rod-like liquid crystal compound showing a smectic phase, is fixed in a state of smectic phase in the optically anisotropic layer;
a direction of maximum refractive index of the optically anisotropic layer is inclined at 10° or smaller to the surface of said optically anisotropic layer;
the retardation values Re(450), Re(550) and Re(650) measured at 450 nm, 550 nm and 650 nm respectively of the optically anisotropic layer satisfy the formulae (2) and (3):
0.70≤Re(450)/Re(550)≤1.00, and  Formula (2)
0.99≤Re(650)/Re(550)≤1.30;  Formula (3)
the uniaxial birefringence layer has a refractive index in the thickness direction larger than the refractive index in the in-plane direction; and
a thickness retardation value Rth(550) measured at 550 nm of the uniaxial birefringence layer satisfies the formula (4):
Formula (4)−180≤Rth(550)≤−10.