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US 8,542,431 B2Granted
Electrophoretic device, display unit, and electronic unit
AssigneeSony Corporation
InventorsAya Shuto, Hidehiko Takanashi, Ken Kobayashi, Atsuhito Yasui, Ryo Kasegawa
Life of this patent
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Abstract
An electrophoretic device includes an electrophoretic particle, a porous layer formed of a fibrous structure containing a non-electrophoretic particle having optical reflection characteristics different from optical reflection characteristics of the electrophoretic particle, and a pair of electrodes arranged with the porous layer in between. The porous layer is adjacent to one or both of the pair of electrodes.
Claims10
An electrophoretic device comprising:
- an electrophoretic particle;
- a porous layer formed of a fibrous structure containing a non-electrophoretic particle having optical reflection characteristics different from optical reflection characteristics of the electrophoretic particle;
- and
- a pair of electrodes arranged with the porous layer in between,
- wherein,
- the porous layer is adjacent to one or both of the pair of electrodes, and wherein at least one of:
- an occupying ratio of the non-electrophoretic particle in the porous layer is from 2 volume % to 10 volume % both inclusive,
- a reflectance of the non-electrophoretic particle is equal to or greater than 2, and
- an average particle diameter of the non-electrophoretic particle is from 200 nm to 1000 nm both inclusive.
6 more elements
An eletrophoretic device comprising:
- an electrophoretic particle;
- a porous layer formed of a fibrous structure containing a non-electrophoretic particle having optical reflection characteristics different from optical reflection characteristics of the electrophoretic particle;
- and
- a pair of electrodes arranged with the porous layer in between,
- wherein:
- the porous layer is adjacent to one or both of the pair of electrodes, wherein:
- an occupying ratio of the non-electrophoretic particle in the porous layer is from 2 volume % to 10 volume % both inclusive,
- a reflectance of the non-electrophoretic particle is equal to or greater than 2, and
- an average particle diameter of the non-electrophoretic particle is from 200 nm to 1000 nm both inclusive.
6 more elements
A display unit comprising:
- an electrophoretic device between a pair of base substances, one or both of the pair of the base substances having light transmission characteristics,
- wherein,
- the electrophoretic device includes (a) an electrophoretic particle, (b) porous layer formed of a fibrous structure containing a non-electrophoretic particle having optical reflection characteristics different from optical reflection characteristics of the electrophoretic particle, and (c) a pair of electrodes arranged with the porous layer in between, wherein the porous layer is adjacent to one or both of the pair of electrodes, and
- wherein at least one of:
- an occupying ratio of the non-electrophoretic particle in the porous layer is from 2 volume % 10 volume % both inclucive,
- a reflectance of the non-electrophoretic particle is equal to or greater than 2, and
- an average particle diameter of the non-electrophotetic particle is from 200 nm to 1000 nm both inclucive.
4 more elements
An electronic unit comprising:
- a display unit having an electrophoretic device between a pair of base substances, one or both of the pair of the base substances having light transmission characteristics,
- wherein,
- the electrophoretic device includes (a) an electrophoretic particle, (b) a porous layer formed of a fibrous structure containing a non-electrophoretic particle having optical reflection characteristics different from optical reflection characteristics of the electrophoretic particle, and (c) a pair of electrodes arranged with the porous layer in between, wherein the porous layer is adjacent to one or both of the pair of electrodes, and
- wherein at least one of:
- an occupying ratio of the non-electrophoretic particle in the porous layer is from 2 volume % 10 volume % both inclusive,
- a reflectance of the non-electrophoretic particle is equal to or greater than 2, and
- an average particle diameter of the non-electrophotetic particle is from 200 nm to 1000 nm both inclucive.
4 more elements
Dependencies are inferred from the claim text.