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US 7,341,784 B2Granted
Light management film and its preparation and use
AssigneeGeneral Electric Company
InventorsChunghei Yeung, Yu Hu, Kevin Patrick Capaldo, Anne Elizabeth Herrmann, Yan Zhang, Bret Chisholm, Paul Smigelski, Dennis Joseph Coyle
Life of this patent
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Abstract
A light management film includes a first layer with a thermoplastic resin and a particular phosphonium sulfonate salt, and a second layer formed from a curable composition and having a refractive index of at least 1.5. The light management film exhibits reduced static electricity build-up and reduced dust attraction, making it easier to handle during fabrication of display devices such as the flat panel displays of laptop computers.
Claims32
A light management film, comprising:
- a first layer comprising
- a thermoplastic resin selected from aromatic polycarbonates, polyetherimides, polyesters, polyphenylene ethers, polyphenylene ether/styrene polymer blends, polyamides, polyketones, acrylonitrile-butadiene-styrenes, and blends thereof, and
- a phosphonium sulfonate salt having the structure
- wherein each occurrence of X is independently halogen or hydrogen provided that at least one X is halogen;
- m, p, and q are integers from 0 to 12;
- n is 0 or 1 with the proviso that when n is 1, p and q are not both 0;
- R1-R3 are each independently C1-C12 hydrocarbyl;
- R4 is C1-C18 hydrocarbyl;
- and Y is selected from
- wherein R5 is hydrogen or C1-C12 hydrocarbyl;
- and
- a second layer disposed on a face of the first layer;
- wherein the second layer is the cured product of a curable composition;
- wherein the second layer has an index of refraction of at least 1.5;
- and wherein the curable composition comprises
- a difunctional (meth)acrylate having the structure
- wherein R6 is hydrogen or methyl;
- X1 is O, NH, or S;
- and R8 has the structure
- wherein Q is —C(CH3)2—, —CH2—, —O—, —S—, —C(O)—, —S(O)—, or —S(O)2—;
- R9 is hydroxy-substituted C1-C6 alkylene;
- each occurrence of t is independently 0, 1, 2, 3, or 4;
- and d is 1 to 3;
- an arylether (meth)acrylate having the structure
- wherein R6 is hydrogen or methyl;
- X1 is O, NH, or S;
- X2 is O, NH, or S;
- R10 is substituted or unsubstituted divalent C1-C12 alkylene or alkenylene;
- Ar is substituted or unsubstituted C6-C12 aryl, including phenyl;
- wherein the substitution on the R10 and Ar may independently include fluorine, chlorine, bromine, iodine, C1-C6 alkyl, C1-C3 perhalogenated alkyl, hydroxy, C1-C6 ketone, C1-C6 ester, N,N-di(C1-C3)alkylamide, or a combination comprising at least one of the foregoing substituents;
- and
- a polymerization initiator.
29 more elements
A light management film, comprising:
- a first layer comprising
- a thermoplastic resin selected from aromatic polycarbonates, polyetherimides, polyesters, polyphenylene ethers, polyphenylene ether/styrene polymer blends, polyamides, polyketones, acrylonitrile-butadiene-styrenes, and blends thereof, and
- a phosphonium sulfonate salt having the structure
- wherein each occurrence of X is independently halogen or hydrogen provided that at least one X is halogen;
- m, p, and q are integers from 0 to 12;
- n is 0 or 1 with the proviso that when n is 1, p and q are not both 0;
- R1-R3 are each independently C1-C12 hydrocarbyl;
- R4 is C1-C18 hydrocarbyl;
- and Y is selected from
- wherein R5 is hydrogen or C1-C12 hydrocarbyl;
- and
- a second layer disposed on a face of the first layer;
- wherein the second layer is the cured product of a curable composition:
- wherein the second layer has an index of refraction of at least 1.5;
- and wherein the curable composition comprises
- a difunctional (meth)acrylate having the structure
- wherein R6 is hydrogen or methyl;
- X1 is O, NH, or S;
- and R8 has the structure
- wherein Q is —C(CH3)2—, —CH2—, —O—, —S—, —C(O)—, —S(O)—, or —S(O)2—;
- R9 is C1-C6 alkylene or hydroxy-substituted C1-C6 alkylene;
- each occurrence of t is independently 1, 2, 3, or 4;
- and d is 1 to 3;
- an arylether (meth)acrylate having the structure
- wherein R6 is hydrogen or methyl;
- X1 is O, NH, or S;
- X2 is O, NH, or S;
- R10 is substituted or unsubstituted divalent C1-C12 alkylene or alkenylene;
- Ar is substituted or unsubstituted C6-C12 aryl, including phenyl;
- wherein the substitution on the R10 and Ar may independently include fluorine, chlorine, bromine, iodine, C1-C6 alkyl, C1-C3 perhalogenated alkyl, hydroxy, C1-C6 ketone, C1-C6 ester, N,N-di(C1-C3)alkylamide, or a combination comprising, at least one of the foregoing substituents;
- and
- a polymerization initiator.
29 more elements
A light management film, comprising:
- a first layer comprising
- a thermoplastic resin selected from aromatic polycarbonates, polyetherimides, polyesters, polyphenylene ethers, polyphenylene ether/styrene polymer blends, polyamides, polyketones, acrylonitrile-butadiene-styrenes, and blends thereof, and
- a phosphonium sulfonate salt having the structure
- wherein each occurrence of X is independently halogen or hydrogen provided that at least one X is halogen;
- m, p, and q are integers from 0 to 12;
- n is 0 or 1 with the proviso that when n is 1, p and q are not both 0;
- R1-R3 are each independently C1-C12 hydrocarbyl;
- R4 is C1-C18 hydrocarbyl;
- and Y is selected from
- wherein R5 is hydrogen or C1-C12 hydrocarbyl;
- and
- a second layer disposed on a face of the first layer;
- wherein the second layer is the cured product of a curable composition;
- wherein the second layer has an index of refraction of at least 1.5;
- and wherein the curable composition comprises tetrabromobisphenol A diglycidyl ether diacrylate.
12 more elements
A light management film, comprising:
- a first layer comprising
- a thermoplastic resin selected from aromatic polycarbonates, polyetherimides, polyesters, polyphenylene ethers, polyphenylene ether/styrene polymer blends, polyamides, polyketones, acrylonitrile-butadiene-styrenes, and blends thereof, and
- a phosphonium sulfonate salt having the structure
- wherein each occurrence of X is independently halogen or hydrogen provided that at least one X is halogen;
- m, p, and q are integers from 0 to 12;
- n is 0 or 1 with the proviso that when n is 1, p and q are not both 0;
- R1-R3 are each independently C1-C12 hydrocarbyl;
- R4 is C1-C18 hydrocarbyl;
- and Y is selected from
- wherein R5 is hydrogen or C1-C12 hydrocarbyl;
- and
- a second layer disposed on a face of the first layer;
- wherein the second layer is the cured product of a curable composition;
- wherein the second layer has an index of refraction of at least 1.5;
- and wherein the curable composition comprises tetrabromobisphenol A diglycidyl ether diacrylate and phenylthioethyl acrylate.
12 more elements
Dependencies are inferred from the claim text.