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US 7,397,614 B2Granted
Display device
AssigneeHitachi Displays, Ltd.
InventorsMaki Taniguchi, Tomoji Oishi, Masahiro Nishizawa, Shinichi Kato, Norikazu Uchiyama
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Abstract
A display device includes an optical region containing a plurality of pigment grains. Each of the plurality of pigment grains formed by a plurality of pigment molecules encapsulated in an inorganic material, and each of the plurality of pigment grains has a grain size not greater than 70 nm.
Claims4
A display device comprising:
- an optical region containing a plurality of pigment grains, each of the plurality of pigment grains being formed by a plurality of pigment molecules encapsulated in an inorganic material;
- wherein each of the plurality of pigment grains has a grain size not greater than 70 nm;
- wherein the plurality of pigment molecules are aggregated in each of the plurality of pigment grains;
- wherein each of the plurality of pigment molecules is an organic compound having at least one nitrogen atom therein;
- wherein each of the plurality of pigment molecules is modified chemically to be soluble in an organic hydrophobic solvent before encapsulation thereof in the inorganic material;
- and
- wherein the chemically modified molecular structure thereof is converted into an original molecular structure thereof by energy transfer.
4 more elements
A display device comprising:
- an optical region containing a plurality of pigment grains, each of the plurality of pigment grains being formed by a plurality of pigment molecules encapsulated in an inorganic material;
- wherein each of the plurality of pigment grains has a grain size not greater than 70 nm;
- and
- wherein the inorganic material is silica.
1 more element
Dependencies are inferred from the claim text.