Pre-polymer formulations for liquid crystal displays
First Claim
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1. A composition comprising:
- a liquid crystal component,a photo polymerization initiator; and
a polymer precursor component comprising;
(i) 40 to 95% wt of a first monomer of structure (I)
R1mR2pSi(X)4-m-p
(I)wherein,R1 is a acryloxy, methacryoxy, or (meth)acryloxyalkyl;
R2 is independently selected from hydrogen, (C1-C12)alkyl, (C6-C12)aryl, or C7-C17)arylalkyl;
X is a hydrolysable or non-hydrolysable group;
m is an integer from 1 to 3 and (m+p) is an integer from 1 to 3;
(ii) 0.05 to 65% wt of one or more second monomers of structure (II)
R3n-R4
(II)wherein,R3 is independently selected from acryloxy or methacryloxy,R4 is (C1-C20)alkyl or (C7-C17)arylalkyl, optionally containing one or more heteroatomic substitutions independently selected from S, O, Si, or N;
n is an integer from 1 to 4;
(iii) 0.05 to 55% wt of a ester, urethane, or (meth)acrylate based polymer or oligomer, bearing one or more reactive (meth)acrylate groups.
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Abstract
A pre-polymer/liquid crystal composition is disclosed and includes, a liquid crystal component, a photo polymerization initiator, and a polymer precursor component. The polymer precursor component includes at least, a silane monomer, reactive (meth)acryloxy monomer or oligomer, and an ester, urethane, or (meth)acrylate based polymer or oligomer, bearing one or more reactive (meth)acrylate groups. Methods of forming a bistable electro-optical device are also disclosed.
30 Citations
23 Claims
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1. A composition comprising:
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a liquid crystal component, a photo polymerization initiator; and a polymer precursor component comprising; (i) 40 to 95% wt of a first monomer of structure (I)
R1mR2pSi(X)4-m-p
(I)wherein, R1 is a acryloxy, methacryoxy, or (meth)acryloxyalkyl; R2 is independently selected from hydrogen, (C1-C12)alkyl, (C6-C12)aryl, or C7-C17)arylalkyl; X is a hydrolysable or non-hydrolysable group; m is an integer from 1 to 3 and (m+p) is an integer from 1 to 3; (ii) 0.05 to 65% wt of one or more second monomers of structure (II)
R3n-R4
(II)wherein, R3 is independently selected from acryloxy or methacryloxy, R4 is (C1-C20)alkyl or (C7-C17)arylalkyl, optionally containing one or more heteroatomic substitutions independently selected from S, O, Si, or N; n is an integer from 1 to 4; (iii) 0.05 to 55% wt of a ester, urethane, or (meth)acrylate based polymer or oligomer, bearing one or more reactive (meth)acrylate groups. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of forming a bistable electro-optical device comprising:
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providing a first substrate having a first conductive inner surface; providing a second substrate having a second conductive inner surface, wherein at least one of the first substrate or second substrate is transparent to visible light; and disposing a composition on the first conductive inner surface, the composition comprising; (a) a liquid crystal component, (b) a photo polymerization initiator; and (c) a polymer precursor component comprising; (i) 40 to 95% wt of a first monomer of structure (I)
R1mR2pSi(X)4-m-p
(I)wherein, R1 is a acryloxy, methacryoxy, or (meth)acryloxyalkyl; R2 is independently selected from hydrogen, (C1-C12)alkyl, (C6-C12)aryl, or (C7-C17)arylalkyl; X is hydrolysable or non-hydrolysable group; m is an integer from 1 to 3 and (m+p) is an integer from 1 to 3; (ii) 0.05 to 55% wt of one or more second monomers of structure (II)
R3n-R4wherein, R3 is independently selected from acryloxy or methacryloxy, R4 is (C1-C20)alkyl, n is an integer from 1 to 4; (iii)5 to 65% wt of a ester, urethane, or (meth)acrylate based polymer or oligomer, bearing one or more reactive (meth)acrylate groups; disposing the second conductive surface on the composition; and curing the composition to formed a cured composition. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification