IP Library Granted Patent US 7,936,498
Granted Patent B2
US 7,936,498 · App. 12/376,843 · Granted May 3, 2011

Display element, image display device, and image display system

Assignee: Ricoh Company, Ltd.
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Quick Facts
Patent No.
US 7,936,498
App. No.
12/376,843
Granted
May 3, 2011
Kind
B2
Abstract

A display element includes a hollow structure. The hollow structure includes plural cells disposed in a plane, each having an opening in a first wall of the hollow structure, and a partition wall separating the adjacent cells. A solvent having one or more types of white particles and/or colored particles dispersed therein is disposed in the cells. The openings are sealed with a resin insoluble in the solvent. A thickness of the partition wall separating the adjacent cells is 0.01 μm or greater but not greater than 10 μm.

Claims (40)

1. A display element comprising:

a hollow structure including plural cells disposed in a plane, each having an opening in a first wall of the hollow structure; and a partition wall separating the adjacent cells;

a solvent disposed in the cells, the solvent having one or more types of white particles and/or colored particles dispersed therein;

wherein the openings are sealed with a resin insoluble in the solvent;

wherein a thickness of the partition wall separating the adjacent cells is 0.01 μm or greater but not greater than 10 μm; and

wherein a first joint portion of the first wall with the partition wall and a second joint portion of a second wall with the partition wall have curved cross-sectional shapes, a curvature radius of each of which is 0.1 μm or greater but not greater than 50 μm.

2. The display element as claimed in claim 1 , wherein a thickness of the first wall and/or a second wall, opposite to the first wall, is 0.01 μm or greater but not greater than 10 μm.

3. A display element comprising:

a hollow structure including plural cells disposed in a plane, each having an opening in a first wall of the hollow structure; and a partition wall separating the adjacent cells;

a solvent disposed in the cells, the solvent having one or more types of white particles and/or colored particles dispersed therein;

wherein the openings are sealed with a resin insoluble in the solvent; and

wherein a first joint portion of the first wall with the partition wall and a second joint portion of a second wall, opposite to the first wall, with the partition wall have curved cross-sectional shapes, a curvature radius of each of which is 0.1 μm or greater but not greater than 50 μm.

4. The display element as claimed in claim 3 , wherein the hollow structure is made of a material obtained by drying a plastic material.

5. The display element as claimed in claim 4 , wherein the plastic material contains a water-soluble resin.

6. The display element as claimed in claim 3 , wherein the hollow structure is made of a material obtained by curing a plastic material by ultraviolet irradiation.

7. An image display device comprising:

the display element of claim 1 ; and

a unit that applies a voltage to the display element.

8. The display element as claimed in claim 3 , wherein the hollow structure is made of a material obtained by drying a plastic material.

9. The display element as claimed in claim 8 , wherein the plastic material contains a water-soluble resin.

10. The display element as claimed in claim 3 , wherein the hollow structure is made of a material obtained by curing a plastic material by ultraviolet irradiation.

11. An image display device comprising:

the display element of claim 3 ; and

a unit that applies a voltage to the display element.

12. A display element comprising:

a hollow structure including plural cells disposed in a plane, each having an opening in a first wall of the hollow structure; and a partition wall separating the adjacent cells;

a solvent disposed in the cells, the solvent having one or more types of white particles and/or colored particles dispersed therein;

wherein the openings are sealed with a resin insoluble in the solvent;

wherein the resin is a film, a thickness of which is 0.1 μm or greater but not greater than 10 μm; and

wherein a first joint portion of the first wall with the partition wall and a second joint portion of a second wall with the partition wall have curved cross-sectional shapes, a curvature radius of each of which is 0.1 μm or greater but not greater than 50 μm.

13. The display element as claimed in claim 12 , wherein the hollow structure is made of a material obtained by drying a plastic material.

14. The display element as claimed in claim 13 , wherein the plastic material contains a water-soluble resin.

15. The display element as claimed in claim 12 , wherein the hollow structure is made of a material obtained by curing a plastic material by ultraviolet irradiation.

16. An image display device comprising:

the display element of claim 12 ; and

a unit that applies a voltage to the display element.

17. The display element as claimed in claim 1 , wherein at least two of the cells are different in size.

18. The display element as claimed in claim 1 , wherein at least two of the cells are different in shape.

19. The display element as claimed in claim 3 , wherein at least two of the cells are different in size.

20. The display element as claimed in claim 3 , wherein at least two of the cells are different in shape.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 11, 2009
From: KANEMATSU, TOSHIHIRO; OHGAKI, MASARU; AOKI, SHINJI; OHSHIMA, HISAYOSHI; SENO, SHINYA; MASUZAWA, MASAHIRO
To: RICOH COMPANY, LTD.
Reel/Frame 022249/0012 →
Priority Claims (2)
JP 2007-059114 · Mar 8, 2007 · national
JP 2007-059115 · Mar 8, 2007 · national
Continuity (1)
Related Publication 20100188731A1 · Jul 29, 2010