Patent ID: 11960182
Assignee: FUJIFILM CORPORATION
Field: Optics (Instruments)
Classification: CPC G  C  H | IPC G  H

Claim 3:
4. A light absorption anisotropic film used for an image display device, which is formed of a liquid crystal composition containing a liquid crystal compound and a dichroic substance,
wherein in a signal derived from the dichroic substance detected by time-of-flight secondary ion mass spectrometry, a relationship between a maximum intensity Imax of the light absorption anisotropic film in a thickness direction and an intensity Isur1 in a surface of the light absorption anisotropic film on a viewing side of the image display device satisfies Expression (I-1), and
wherein the liquid crystal composition further contains a surfactant, and
a difference between a log P value of the surfactant and a log P value of the liquid crystal compound is less than 3.1,

2.0≤Imax/Isur1  (I-1).