US 12,441,818 B2
Curable composition, cured film, infrared transmitting filter, laminate, solid-state imaging element, sensor, and pattern forming method
Tetsushi Miyata, Shizuoka (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Feb. 11, 2021, as Appl. No. 17/173,855.
Application 17/173,855 is a continuation of application No. PCT/JP2019/034895, filed on Sep. 5, 2019.
Claims priority of application No. 2018-176455 (JP), filed on Sep. 20, 2018; and application No. 2019-146457 (JP), filed on Aug. 8, 2019.
Prior Publication US 2021/0163634 A1, Jun. 3, 2021
Int. Cl. C08F 2/44 (2006.01); B32B 27/08 (2006.01); C08F 2/50 (2006.01); C08L 101/00 (2006.01); G02B 5/20 (2006.01); G02B 5/22 (2006.01)
CPC C08F 2/44 (2013.01) [B32B 27/08 (2013.01); C08F 2/50 (2013.01); C08L 101/00 (2013.01); G02B 5/208 (2013.01); G02B 5/223 (2013.01); B32B 2457/00 (2013.01)] 14 Claims
 
1. A curable composition comprising:
an infrared absorber;
a photopolymerization initiator; and
a curable compound,
wherein the photopolymerization initiator is at least one of an oxime compound or an α-aminoketone compound;
wherein the infrared absorber includes at least one compound selected from the group consisting of a phthalocyanine compound, a squarylium compound, a croconium compound, a diimmonium compound, a perylene compound, a pyrrolopyrrole compound, a metal complex, and a compound semiconductor; and
wherein an absorbance X of the infrared absorber at a maximum absorption wavelength in a wavelength range of 400 nm to 1,300 nm and a maximum absorbance Y in a wavelength range of longer than 950 nm and 1,300 nm or shorter satisfy Expression 1,
in a case where the curable composition is applied at any thickness of 0.1 μm to 100 μm, a wavelength Tb having a transmittance of 50% is present in a wavelength range of 1,000 nm to 1,300 nm, and
in a case where a wavelength that is shorter than the wavelength Tb by 200 nm is represented by Ta and a wavelength that is longer than the wavelength Tb by 200 nm is represented by Tc, a ratio A/C of a minimum value A of an absorbance in a wavelength range of the wavelength Ta±50 nm to a maximum value C of an absorbance in a wavelength range of the wavelength Tc±50 nm is 4.5 or higher,
Y>X×0.5  Expression 1.