US 20190271885Al  c19)  United States  c12)  Patent Application Publication  TAKAHASHI et al.  c10)  Pub. No.: US 2019/0271885 Al  (43)  Pub. Date:  Sep. 5, 2019  (54)  OPTICAL FILM AND METHOD FOR  PRODUCING THE SAME, POLARIZING  PLATE, AND IMAGE DISPLAY DEVICE  (71)  Applicant:  FUJIFILM Corporation,  Tokyo (JP)  (72)  Inventors:  Keita TAKAHASHI,  Minamiashigara-shi (JP);  Nobuyuki  AKUTAGAWA,  Minamiashigara-shi  (JP);  Yoshiaki HISAKADO,  Minamiashigara-shi (JP)  (73)  Assignee:  FUJIFILM Corporation,  Tokyo (JP)  (21)  Appl. No.:  16/419,811  (22)  Filed:  May 22, 2019  (63)  Continuation  of application  No.  044454, filed on Dec. 12, 2017.  PCT/JP2017/  (52)  U.S. Cl.  CPC ..  G02F 1/133711  (2013.01);  G02F 1/133528  (2013.01);  G02F 2202/023  (2013.01);  G02F  111334  (2013.01);  G02B 6/0056  (2013.01)  (51)  Int. Cl.  Dec. 28, 2016  (JP) ................................. 2016-255210  An optical film has an aligmnent layer and a retardation  layer which is disposed on the aligmnent layer and formed  using a polymerizable liquid crystal composition including  a predetermined liquid crystal compound, in which at least  one of an acid having the pKa of -10.0 or less or a salt of  the acid is included in at least one of the alignment layer or  the retardation layer.  (30)  Foreign Application Priority Data  Publication Classification  (57)  ABSTRACT  Related U.S. Application Data  G02F 111337  G02F 111335  F21V 8/00  G02F 111334  (2006.01)  (2006.01)  (2006.01)  (2006.01)  108  r1  14  12  16 