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US 2019/0235144 A1Published application
Coatable grey polarizer
AssigneeLight Polymers Holding
InventorsEvgeny Morozov, Chih-Hao Huang
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Abstract
A linear polarizer may be formed a blue dichroic dye compound, having a maximum dichroic ratio Kd≤12 in an entire visible wavelength range, and a red dichroic dye compound, having a maximum dichroic ratio Kd≤16 in the entire visible wavelength range. The linear polarizer has a dichroic ratio Kd≥18 and a thickness of less than or equal to 2 micrometers. The linear polarizer may form an achromatic polarizer.
Claims23
A linear polarizer, comprising:
- a blue dichroic dye compound, having its maximum visible light absorption in a wavelength range 600 nm-700 nm and a maximum dichroic ratio Kd≤12 in an entire visible wavelength range;
- and
- a red dichroic dye compound, having its maximum visible light absorption in a wavelength range 430 nm-520 nm and a maximum dichroic ratio Kd≤16 in the entire visible wavelength range;
- wherein the linear polarizer has a dichroic ratio Kd≥18 at 550 nm, and a thickness of the linear polarizer is less than or equal to 2 micrometers.
1 more element
A lyotropic liquid crystal formulation, comprising:
- a blue lyotropic liquid crystal comprising a blue compound having a structure B:
- wherein:
- X is a SO3H (sulfonic) group or a salt thereof, and 1≤m≤4;
- Z is a Cl (chloro) group, and 0≤p≤2;
- and
- m+p≤4;
- a red lyotropic liquid crystal comprising a red compound having a structure R:
- or a trans-isomer of structure R, wherein, X is a SO3H (sulfonic) group or a salt thereof;
- and
- a violet lyotropic liquid crystal comprising a violet compound having a structure Va:
- or a cis-isomer of Structure Va, wherein:
- X is a SO3H (sulfonic) group or a salt thereof, and 1≤m≤4;
- Y is a S(═O)2 (sulfone) group, and 0≤n≤2;
- Z is a OH (hydroxy) group, and 0≤p≤4;
- R is an O (oxo) group, and 0≤q≤4;
- and
- m+p+q≤6.
14 more elements
A lyotropic liquid crystal formulation, comprising:
- a blue lyotropic liquid crystal comprising a blue compound having a structure B:
- wherein:
- X is a SO3H (sulfonic) group or a salt thereof, and 1≤m≤4;
- Z is a Cl (chloro) group, and 0≤p≤2;
- and
- m+p≤4;
- a red lyotropic liquid crystal comprising a red compound having a structure R:
- or a trans-isomer of structure R, wherein, X is a SO3H (sulfonic) group or a salt thereof;
- and
- a yellow lyotropic liquid crystal comprising a yellow compound having a structure Y:
- wherein:
- X is a SO3H (sulfonic) group or a salt thereof, and 1≤m≤4;
- Z is a Cl (chloro) group, and 0≤p≤2;
- and
- m+p≤6.
12 more elements
Dependencies are inferred from the claim text.