Colored pigment particles for electrophoretic displays
AssigneeEmpire Technology Development LLC
InventorJosef Peter Klein
Life of this patent
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Abstract
Electrophoretic displays with an electrophoretic medium having charged pigmented microparticles are disclosed. The microparticles are charged linking molecules polymerized with chromophores of various colors so that microparticles in a variety of colors may be produced. Methods for producing the microparticles and using the microparticles in an electrophoretic display are also disclosed. Such microparticles may be provided separately, or kits may be provided for producing the microparticles.
Claims10
A charged pigment particle comprising an alternating copolymer of a chromophore and a charged linker molecule, wherein the chromophore is selected from the group consisting of:
- analogs thereof, and derivatives thereof, wherein R1 and R2 are one of —H and -succinimide, and X and Q are each individually a C2 to C10 alkylene;
- analogs thereof, and derivatives thereof;
- analogs thereof, and derivatives thereof, wherein R3 and R4 are —H, and X and Q are each individually a C2 to C10 alkylene;
- analogs thereof, and derivatives thereof, wherein each R1 is individually a C2 to C10 alkylene, and each X is one of —OH or —O-succinimide;
- and
- analogs thereof, and derivatives thereof, wherein each R1 is individually a C2 to C10 alkylene, and
- wherein the charged linker molecule is selected from the group consisting of:
- analogs thereof, and derivatives thereof, wherein M is N or P, each R is individually a C1 to C10 alkyl, and each A is individually a C2 to C10 alkylene;
- analogs thereof, and derivatives thereof, wherein M is N or P, each R is individually a C1 to C10 alkyl, and each X is individually a C2 to C10 alkylene;
- analogs thereof, and derivatives thereof, wherein M is N or P, each R is individually a C1 to C10 alkyl, and each A is individually a C2 to C10 alkylene;
- analogs thereof, and derivatives thereof, wherein M is N or P, each R is individually a C1 to C10 alkyl, and each R2 is individually a C2 to C10 alkylene;
- and
- analogs thereof, and derivatives thereof, wherein M is N or P, each R is individually a C1 to C10 alkyl, and each R2 is individually a C2 to C10 alkylene, and each Y is one of —OH or —O-succinimide.
A charged pigment particle comprising an alternating copolymer of a chromophore and a charged linker molecule, wherein the chromophore is selected from the group consisting of:
- analogs thereof, and derivatives thereof, wherein R1 and R2 are one of —H and -succinimide, and X and Q are each individually a C2 to C10 alkylene;
- analogs thereof, and derivatives thereof;
- analogs thereof, and derivatives thereof, wherein R3 and R4 are —H, and X and Q are each individually a C2 to C10 alkylene;
- analogs thereof, and derivatives thereof, wherein each R1 is individually a C2 to C10 alkylene, and each X is one of —OH or —O-succinimide;
- and
- analogs thereof, and derivatives thereof, wherein each R1 is individually a C2 to C10 alkylene.
A charged pigment particle comprising an alternating copolymer of a chromophore and a charged linker molecule, wherein the charged linker molecule is selected from the group consisting of:
- analogs thereof, and derivatives thereof, wherein M is N or P, each R is individually a C1 to C10 alkyl, and each A is individually a C2 to C10 alkylene;
- analogs thereof, and derivatives thereof, wherein M is N or P, each R is individually a C1 to C10 alkyl, and each X is individually a C2 to C10 alkylene;
- analogs thereof, and derivatives thereof, wherein M is N or P, each R is individually a C1 to C10 alkyl, and each A is individually a C2 to C10 alkylene;
- analogs thereof, and derivatives thereof, wherein M is N or P, each R is individually a C1 to C10 alkyl, and each R2 is individually a C2 to C10 alkylene;
- and
- analogs thereof, and derivatives thereof, wherein M is N or P, each R is individually a C1 to C10 alkyl, and each R2 is individually a C2 to C10 alkylene, and each Y is one of —OH or —O-succinimide.
Dependencies are inferred from the claim text.