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# c19) United States c12) Patent Application Publication 

# TAKAHASHI et al. 

# (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/ 

## Related U.S. Application Data 

<img src='content_image/945467.jpg'>

## (30) Foreign Application Priority Data 

Dec. 28, 2016 (JP) ................................. 2016-255210 

(51) Int. Cl. 

(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) 

## (57) ABSTRACT 

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. 

US 20190271885Al 

# c10) Pub. No.: US 2019/0271885 Al 

# (43) Pub. Date: Sep. 5, 2019 

## Publication Classification 

<img src='content_image/945488.jpg'>

<img src='content_image/945489.jpg'>

