Display characteristics with memorability

Patent metadata

Field	Value
Publication number	US-9817292-B2
Application number	US-201515125248-A
Country	US
Kind code	B2
Filing date	Feb 3, 2015
Priority date	Mar 20, 2014
Publication date	Nov 14, 2017
Grant date	Nov 14, 2017

Abstract

A display unit of the present invention includes, in an insulating liquid ( 1 ), migrating particles ( 10 ), and a porous layer ( 20 ) formed using a fibrous structure ( 21 ), and the fibrous structure ( 21 ) includes non-migrating particles ( 22 ) having light reflectivity different from light reflectivity of the migrating particles ( 10 ) and being at least partially modified with a surfactant.

First claim

The invention claimed is:

1. A display unit, comprising:
migrating particles and a porous layer in an insulating liquid, the porous layer being formed using a fibrous structure,
wherein the fibrous structure includes non-migrating particles having light reflectivity different from light reflectivity of the migrating particles and being at least partially modified with a surfactant.

2. The display unit according to claim 1 , wherein the fibrous structure includes a chain molecule having a main portion configured of a carbon atom, an oxygen atom, and a hydrogen atom, and including an ester group, and the fibrous structure holds the non-migrating particles.

3. The display unit according to claim 1 , wherein the surfactant is an anionic surfactant.

4. The display unit according to claim 1 , wherein a primary particle size of the non-migrating particles is 450 nanometers or more.

5. The display unit according to claim 1 , wherein a minimum fiber diameter of the fibrous structure is 500 nanometers or less.

6. The display unit according to claim 1 , wherein a fiber diameter of the fibrous structure is 50 nanometers or more and 2000 nanometers or less.

7. The display unit according to claim 1 , wherein an average pore size of the fibrous structure is 0.1 micrometers or more and 10 micrometers or less.

8. The display unit according to claim 1 , wherein the fibrous structure is formed by an antistatic method.

9. The display unit according to claim 1 , wherein optical reflectance of the non-migrating particles is higher than optical reflectance of the migrating particles, and the migrating particles perform dark display, and the non-migrating particles and the fibrous structure perform bright display.

10. The display unit according to claim 1 , wherein the migrating particles and the non-migrating particles are configured of one or more of an organic pigment, an inorganic pigment, a dye, a carbon material, a metallic material, a metal oxide, glass, and a polymer material.

11. The display unit according to claim 1 , wherein the fibrous structure is made of an acrylic resin.

12. The display unit according to claim 2 , wherein the chain molecule is one of polyalkyl methacrylate, polyalkyl acrylate, polyalkenyl methacrylate, polyalkenyl acrylate, polyalkynyl methacrylate, and polyalkynyl acrylate.

13. The display unit according to claim 2 , wherein the chain molecule has resistance to biodegradation.

14. The display unit according to claim 2 , wherein an end of the chain molecule includes an atom other than the carbon atom, the oxygen atom, and the hydrogen atom that configure the main portion.

15. The display unit according to claim 1 , wherein the insulating liquid contains a dispersant that disperses the migrating particles.

16. The display unit according to claim 1 , wherein the non-migrating particles include large particles and small particles having primary particle sizes different from each other.

17. A method of manufacturing a display unit, the method comprising:
forming migrating particles;
modifying non-migrating particles with a surfactant, the non-migrating particles having light reflectivity different from light reflectivity of the migrating particles; and
forming a fibrous structure mixed with the non-migrating particles and used to configure a porous layer.

18. An electronic apparatus provided with a display unit, the display unit comprising:
migrating particles and a porous layer in an insulating liquid, the porous layer being formed using a fibrous structure,
wherein the fibrous structure includes non-migrating particles having light reflectivity different from light reflectivity of the migrating particles and being at least partially modified with a surfactant.

Assignees

• Sony Corp

Inventors

• Shuto Aya
• Kobayashi Ken
• Kaino Yuriko

Classifications

• C09D5/448

  characterised by the additives used (C09D5/4403 - C09D5/4476, C09D5/4492 take precedence) · CPC title

• C09D5/4411

  Homopolymers or copolymers of acrylates or methacrylates · CPC title

• G02F1/167 Primary

  by electrophoresis · CPC title

• G02F2001/1678

  characterised by the composition or particle type · CPC title

• B32B27/065

  of foam · CPC title