US 11,719,869 B2
Polarizing plate, polarizing plate-carrier film laminate, method for preparing polarizing plate-carrier film laminate, method for preparing polarizing plate, and active energy ray curable composition
Mi So Lee, Daejeon (KR); Yoonkyung Kwon, Daejeon (KR); Jin Woo Kim, Daejeon (KR); and Dong Uk Kim, Daejeon (KR)
Assigned to SHANJIN OPTOELECTRONICS (SUZHOU) CO., LTD., Zhangjiagang (CN)
Appl. No. 16/770,813
Filed by SHANJIN OPTOELECTRONICS (SUZHOU) CO., LTD., Zhangjiang (CN)
PCT Filed Dec. 14, 2018, PCT No. PCT/KR2018/015941
§ 371(c)(1), (2) Date Jun. 8, 2020,
PCT Pub. No. WO2019/117676, PCT Pub. Date Jun. 20, 2019.
Claims priority of application No. 10-2017-0173268 (KR), filed on Dec. 15, 2017.
Prior Publication US 2020/0393603 A1, Dec. 17, 2020
Int. Cl. B32B 27/30 (2006.01); B32B 27/38 (2006.01); B32B 37/10 (2006.01); B32B 37/12 (2006.01); B32B 37/24 (2006.01); B32B 38/10 (2006.01); B32B 7/023 (2019.01); B32B 7/12 (2006.01); G02B 1/18 (2015.01); G02B 5/30 (2006.01); G02F 1/1335 (2006.01); B32B 27/18 (2006.01)
CPC G02B 5/305 (2013.01) [B32B 7/023 (2019.01); B32B 7/12 (2013.01); B32B 27/18 (2013.01); B32B 27/306 (2013.01); B32B 27/38 (2013.01); B32B 37/10 (2013.01); B32B 37/1284 (2013.01); B32B 38/10 (2013.01); G02B 1/18 (2015.01); G02F 1/133528 (2013.01); B32B 2037/243 (2013.01); B32B 2305/72 (2013.01); B32B 2307/42 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for manufacturing a polarizing plate-carrier film laminate, comprising:
supplying a carrier film to a first surface of a polarizer;
supplying a protective film to a second surface of the polarizer;
forming a protective layer by supplying an active energy ray curable composition between the polarizer and the carrier film wherein the active energy ray curable composition comprises a bisphenol F epoxy compound, an oxetane compound, a polyol compound, and an epoxy compound which does not contain an aromatic ring, or a cured product thereof; and wherein the active energy ray curable composition includes 18 parts by weight of the bisphenol F epoxy compound, 30 to 80 parts by weight of the oxetane compound, and 1 to 20 parts by weight of the polyol compound based on 100 parts by weight of the epoxy compound which does not contain an aromatic ring, wherein the bisphenol F epoxy compound has a viscosity at 25° C. of 2,000 cps to 5,000 cps;
forming a bonding agent layer by supplying a photocurable bonding agent composition between the polarizer and the protective film;
pressurizing a laminate in which the carrier film, the protective layer, the polarizer, the bonding agent layer, and the protective film are sequentially laminated by disposing a pair of pressurization means on opposing surfaces of the laminate; and
curing the protective layer and the bonding agent layer by irradiating the protective layer and the bonding agent layer with an active energy ray.