Display device
AssigneeNational University Corporation Chiba University
InventorsNorihisa Kobayashi, Kazuki Nakamura, Yuichi Watanabe
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Abstract
Disclosed is a high quality display device which avoids complicated element structure, and does not unnecessarily reduce portability. The display device comprises: a pair of substrates which are disposed facing each other, and on each of which electrodes are formed; and a material layer which is sandwiched between the pair of substrates. The material layer contains: a coloring material which changes color upon the application of a voltage; and a light-emitting material which emits light upon photoexcitation.
Claims13
A display device, comprising:
- a pair of substrates which are disposed facing each other, and on each of which electrodes are formed;
- and
- a material layer which is sandwiched between the pair of substrates;
- wherein the material layer contains a coloring material which changes color upon the application of a DC voltage, and a light-emitting material which emits light upon excitation based on an AC voltage,
- wherein when applying the DC voltage, the coloring material changes color through an oxidation-reduction reaction, whereas the light-emitting material does not emit light,
- wherein the light-emitting material contains at least one of Ru(bpy)3(PF6)2, RuPF6, RuCl6, PVB (polyvinyl butyral), and TBAP (tetrabutylammonium perchlorate),
- wherein when applying the AC voltage, the light-emitting material emits light, whereas the coloring material is not actually colored.
A display device, comprising:
- a pair of substrates which are disposed facing each other, and on each of which electrodes are formed;
- a material layer which is sandwiched between the pair of substrates;
- wherein the material layer contains a coloring material which changes color upon the application of a DC voltage, and a light-emitting material which emits light upon excitation based on an AC voltage,
- wherein when applying the DC voltage, the coloring material is colored by an oxidation-reduction reaction,
- wherein the light-emitting material contains Ru complex,
- the coloring materials contains at least one of DMT 1,4-diacetyl benzene, 4,4-biphenyl dicarboxylic acid diethyl ester,
- wherein when applying the AC voltage, the light-emitting material emits light, whereas the coloring material is not actually colored.
A display device, comprising:
- a pair of substrates which are disposed facing each other, and on each of which electrodes are formed;
- and
- a material layer which is sandwiched between the pair of substrates;
- wherein the material layer contains a coloring material which changes color upon the application of a DC voltage but not an AC voltage, and a light-emitting material which emits light upon excitation based on an AC voltage but does not emit light upon application of a DC voltage,
- wherein when applying the DC voltage, the coloring material changes color through an oxidation-reduction reaction, whereas the light-emitting material does not emit light,
- wherein the light-emitting material contains at least one of Ru(bpy)3(PF6)2, RuPF6, RuCl6, PVB (polyvinyl butyral), and TBAP (tetrabutylammonium perchlorate).
Dependencies are inferred from the claim text.