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US 11,768,323 B2Granted
Polarizer and image display device
AssigneeFUJIFILM Corporation
InventorsWataru Hoshino, Yoshiaki Takada, Yasuhiro Ishiwata, Yuzo Fujiki, Kengo Saito
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Abstract
A polarizer with a high degree of alignment and an image display device including the polarizer. The polarizer is formed of a polarizer-forming composition containing a liquid crystal compound, a first dichroic material, and a second dichroic material, in which the polarizer has an array structure formed of the first dichroic material and an array structure formed of the second dichroic material.
Claims9
A polarizer which is formed of a polarizer-forming composition containing a liquid crystal compound, a first dichroic material, and a second dichroic material,
- wherein the polarizer has an array structure formed of the first dichroic material and an array structure formed of the second dichroic material, and
- wherein Expressions (I) and (II) are satisfied,
- |λM−λ1|≤5 nm (I)
- |λ1−λ1′|≥5 nm (II)
- in Expressions (I) and (II),
- λM represents a maximum absorption wavelength in a difference spectrum between an absorption spectrum of a film formed of a composition that contains the first dichroic material, the second dichroic material, and the liquid crystal compound and an absorption spectrum of a film formed of a composition that contains the second dichroic material and the liquid crystal compound but does not contain the first dichroic material,
- λ1 represents a maximum absorption wavelength in an absorption spectrum of a film formed of a composition that contains the first dichroic material and the liquid crystal compound but does not contain the second dichroic material, and
- λ1′ represents a maximum absorption wavelength in an absorption spectrum of a solution in which the first dichroic material is dissolved.
5 more elements
Dependencies are inferred from the claim text.