Electrowetting elements
AssigneeAmazon Technologies, Inc.
InventorsMelanie Maria Hubertina Van De Weijer-Wagemans, Romaric Massard, Robert A. Hayes
Life of this patent
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Abstract
A dye for a fluid of an electrowetting element, the dye having a general formula selected from the group consisting of: wherein Q has the general formula: -Het1R1 or -Het1R1R2; V has the general formula: -Het2R3 or -Het2R3R4; Het1 and Het2 are heteroatoms; R1 and R3 are H; R2 and R4 are any functional group; T and U are any functional group; W, X, Y and Z are H or an alkyl group; and F, G, L and M are H or an alkyl group, and with the proviso that the dye does not have the general formula: The present invention further relates to a fluid comprising a dye of the present invention, an electrowetting element and an optical display device comprising the fluid, and a use of the dye to reduce photo-bleaching.
Claims24
An electrowetting element comprising a first support plate, a second support plate and an electrode,
- wherein a space between the support plates contains a first fluid and a second fluid, wherein:
- the first fluid is immiscible with the second fluid;
- the second fluid is at least one of electrically conductive or polar;
- and
- the first fluid comprises a non-polar carrier fluid in which is dissolved a dye having a general formula selected from the group consisting of:
- wherein Q has the general formula:
- -Het1R1 or -Het1R1R2;
- V has the general formula:
- -Het2R3 or -Het2R3R4;
- Het1 and Het2 are heteroatoms;
- R1 and R3 are H;
- R2 and R4 are both at least one of H, an alkyl group comprising 1 to 20 carbon atoms, a branched alkyl group comprising 1 to 20 carbon atoms or a cyclic alkyl group comprising 1 to 20 carbon atoms, and at least one of R2 and R4 comprises at least one of a branched alkyl group comprising 4 to 16 carbon atoms or a cyclic alkyl group comprising 4 to 16 carbon atoms;
- T and U are at least one of H, an alkyl group comprising 1 to 20 carbon atoms, a branched alkyl group comprising 1 to 20 carbon atoms, a cyclic alkyl group comprising 1 to 20 carbon atoms, or a functional group including a heteroatom, wherein where T is said functional group including a heteroatom, T has the general formula:
- -Het3, -Het3R5or -Het3R5R6, and where U is said functional group including a heteroatom, U has the general formula:
- -Het4, -Het4R7 or -Het4R7R8, wherein Het3 and Het4 are heteroatoms and R5, R6, R7 and R8 are at least one of H, an alkyl group comprising 1 to 20 carbon atoms a branched alkyl group comprising 1 to 20 carbon atoms or a cyclic alkyl group comprising 1 to 20 carbon atoms;
- W, X, Y and Z are H or an alkyl group;
- and
- F, G, L and M are H or an alkyl group.
Dependencies are inferred from the claim text.