Smectic polymer liquid crystals, process for production thereof and electronic device
AssigneeCanon Kabushiki Kaisha
InventorsKoichi Sato, Akira Tsuboyama, Yukio Hanyu
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Abstract
A polymeric compound has a hexagonal system order (as its crystal system) in a higher order smectic phase, such as smectic B phase, smectic L phase, smectic E phase, etc. The polymeric compound is produced through polymerization of a liquid crystal compound having a polymerizable functional group, such as an acrylic group or a methacrylic group, in a state of assuming a hexagonal system order. An electronic device, preferably an electroluminescence device, using a layer of the polymeric compound disposed between a pair of electrodes exhibits good luminescence and carrier transport performances while retaining excellent reliability.
Claims8
A polymeric compound having a smectic phase and a hexagonal system order in the smectic phase, wherein said polymeric compound is a product of the polymerization of CH2═C(CH3)COO(CH2)5PhCOOPhPhCF3 and wherein Ph is a 1,4-phenylene group.
An electronic device comprising:
- at least one substrate,
- two electrodes disposed on said at least one substrate, and
- a polymer layer of at least one species of polymeric compound disposed between the two electrodes,
- wherein said at least one species of polymeric compound has a smectic phase and a hexagonal system order in the smectic phase, wherein said polymeric compound is a product of the polymerization of CH2═C(CH3)COO(CH2)5PhCOOPhPhCF3 and wherein Ph is a 1,4-phenylene group.
A process for producing an electronic device of the type wherein a polymer layer of at least one species of polymeric compound is disposed between a pair of electrodes on a substrate, said process comprising a step of:
- forming a polymer layer of at least one species of polymeric compound by polymerizing CH2═C(CH3)COO(CH2)5PhCOOPhPhCF3, wherein Ph is a 1,4-phenylene group and wherein said at least one species of polymeric compound has a smectic phase and a hexagonal system order in the smectic phase.
Dependencies are inferred from the claim text.