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US 2017/0283702 A1Published application
Alignment film composition, liquid crystal display device, and method of manufacturing liquid crystal display device
AssigneeSamsung Display Co., Ltd.
InventorsSuk Hoon KANG, Jong Hwan JEON, Jin Soo JUNG, In Ok KIM, Baek Kyun JEON
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Abstract
An alignment film composition includes a copolymer of a dianhydride-based compound and a diamine-based compound, and a cross-linker. The copolymer has a structure represented by Chemical Formula Ia or Chemical Formula Ib, and the cross-linker is represented by Chemical Formula IIa or Chemical Formula IIb:
Claims20
An alignment film composition, comprising:
- a copolymer of a dianhydride-based compound and a diamine-based compound, the copolymer having a structure represented by Chemical Formula Ia or Chemical Formula Ib in a repetitive unit;
- and
- a cross-linker represented by Chemical Formula IIa or Chemical Formula IIb,
- wherein:
- and
- wherein:
- in Chemical Formula Ia and Chemical Formula Ib:
- R1 is a tetravalent organic group derived from an alicyclic dianhydride or an aromatic dianhydride;
- and
- R2 is a divalent organic group derived from an alicyclic diamine or an aromatic diamine;
- in Chemical Formula Ib, R3 and R4 are each independently hydrogen, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group;
- in Chemical Formula IIa and Chemical Formula IIb:
- X1 to X4 are each independently any one of a hydroxyl group (—OH), an amino group (—NH2), an epoxy group, an aziridine group, a carbodiimide group, an acrylate group, a methacrylate group, and a vinyl group;
- Y1 and Y2 are each independently any one of a single bond, —CO—, —COO—, —OCO—, —S—, —O—, —OOC— —CH2CH2O—, —OCH2CH2—, an aromatic compound of 6 to 30 carbon atoms, and an alicyclic compound of 4 to 20 carbon atoms;
- m1 to m4 are each independently an integer of 0 to 6;
- and
- n is an integer of 2 to 18;
- and
- in Chemical Formula IIa, Z1 and Z2 are each independently any one of
- R being H or an alkyl group of 1 to 3 carbon atoms, an aromatic compound of 6 to 30 carbon atoms, and an alicylic compound of 4 to 20 carbon atoms.
17 more elements
A method of manufacturing a liquid crystal display device, the method comprising:
- providing a substrate;
- applying an alignment film composition onto the substrate;
- heat-treating the alignment film composition to form an alignment film;
- irradiating the heat-treated alignment film with linearly polarized light;
- and
- heat-treating the light-irradiated alignment film,
- wherein the alignment film composition comprises:
- a copolymer having a structure represented by Chemical Formula Ia or Chemical Formula Ib in a repetitive unit;
- and
- a cross-linker represented by Chemical Formula IIa or Chemical Formula IIb below,
- wherein:
- and
- wherein:
- in Chemical Formula Ia and Chemical Formula Ib:
- R1 is a tetravalent organic group derived from an alicyclic dianhydride or an aromatic dianhydride;
- R2 is a divalent organic group derived from an alicyclic diamine or an aromatic diamine;
- in Chemical Formula Ib;
- and
- R3 and R4 are each independently hydrogen, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group;
- in Chemical Formula IIa and Chemical Formula IIb:
- X1 to X4 are each independently any one of a hydroxyl group (—OH), an amino group (—NH2), an epoxy group, an aziridine group, a carbodiimide group, an acrylate group, a methacrylate group, and a vinyl group;
- Y1 and Y2 are each independently any one of a single bond, —CO—, —COO—, —OCO—, —S—, —O—, —OOC— —CH2CH2O—, —OCH2CH2—, an aromatic compound of 6 to 30 carbon atoms, and an alicyclic compound of 4 to 20 carbon atoms;
- m1 to m4 are each independently an integer of 0 to 6;
- and
- n is an integer of 2 to 18;
- and
- in Chemical Formula IIa:
- Z1 and Z2 are each independently any one of
- R being H or an alkyl group of 1 to 3 carbon atoms, an aromatic compound of 6 to 30 carbon atoms, and an alicylic compound of 4 to 20 carbon atoms.
26 more elements
A liquid crystal display device, comprising:
- a substrate;
- and
- an alignment film disposed on the substrate,
- wherein the alignment film comprises:
- a copolymer having a structure represented by Chemical Formula Ia or Chemical Formula Ib in a repetitive unit;
- and
- a cross-linking combination comprising the copolymer cross-linked with a cross-linker represented by Chemical Formula Ia or Chemical Formula IIb,
- wherein:
- and
- wherein:
- in Chemical Formula Ia and Chemical Formula Ib:
- R1 is a tetravalent organic group derived from an alicyclic dianhydride or an aromatic dianhydride;
- R2 is a divalent organic group derived from an alicyclic diamine or an aromatic diamine;
- in Chemical Formula Ib;
- and
- R3 and R4 are each independently hydrogen, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group;
- in Chemical Formula IIa and Chemical Formula IIb:
- X1 to X4 are each independently any one of a hydroxyl group (—OH), an amino group (—NH2), an epoxy group, an aziridine group, a carbodiimide group, an acrylate group, a methacrylate group, and a vinyl group;
- Y1 and Y2 are each independently any one of a single bond, —CO—, —COO—, —OCO—, —S—, —O—, —OOC— —CH2CH2O—, —OCH2CH2—, an aromatic compound of 6 to 30 carbon atoms, and an alicyclic compound of 4 to 20 carbon atoms;
- m1 to m4 are each independently an integer of 0 to 6;
- and
- n is an integer of 2 to 18;
- and
- in Chemical Formula IIa:
- Z1 and Z2 are each independently any one of
- R being H or an alkyl group of 1 to 3 carbon atoms, an aromatic compound of 6 to 30 carbon atoms, and an alicylic compound of 4 to 20 carbon atoms.
23 more elements
Dependencies are inferred from the claim text.