Display element, display and method for manufacturing display

• US 7,397,594 B2
• Filed: 11/13/2003
• Issued: 07/08/2008
• Est. Priority Date: 11/28/2002
• Status: Expired due to Fees

• Current Assignee: Konica Minolta Holdings Incorporated (Konica Minolta Inc.)
• Original Assignee: Konica Minolta Holdings Incorporated (Konica Minolta Inc.)
• Inventors: Takeyama, Toshihisa
• Primary Examiner(s): Mack; Ricky L
• Assistant Examiner(s): Tra; Tuyen Q
• Application Number:
  US10/536,430
• Publication Number:
  US 20060050359A1
• Time in Patent Office: 1,699 Days
• Field of Search: 359265-275, 345/105, 345/107
• US Class Current: 359/265
• CPC Class Codes: G02F 1/1508 using a solid electrolyte
• CPC Class Codes: G02F 1/157 Structural association of cells with optical devices, e.g. reflectors or illuminating devices
• CPC Class Codes: G02F 2001/164 the electrolyte is made of polymers
• CPC Class Codes: G02F 2201/38 Anti-reflection arrangements

Abstract

A display element containing: (a) a first electrode which is transparent and is controlled by a driver element; (b) a second electrode; and (c) a solid polymer electrolyte layer containing a colorant and metal ions, the solid polymer electrolyte layer being provided between the first electrode and the second electrode, wherein the first electrode has an anti-reflecting layer on a side opposite to the solid polymer electrolyte layer.

Claims

1. A display element comprising:

(a) a first electrode which is transparent and is controlled by a driver element;

(b) a second electrode; and

(c) a solid polymer electrolyte layer containing a colorant and metal ions, wherein;

said metal ions are chosen from silver ions, bismuth ions, and mixtures thereof;

said solid polymer electrolyte layer is provided between the first electrode and the second electrode;

said colorant is selected from the group consisting of a powder of titanium oxide, calcium carbonate, magnesium oxide and aluminum oxide, wherein a surface of the powder is treated with a hydrophobicity-giving agent; and

the first electrode has an anti-reflecting layer on a side opposite to the solid polymer electrolyte layer.

2. The display element of claim 1, wherein the first electrode is provided on a transparent substrate.

3. The display element of claim 2, wherein the anti-reflecting layer has a smaller reflection index than the transparent substrate.

4. The display element of claim 3, wherein the anti-reflecting layer contains a fluorinated compound as a main component.

5. The display element of claim 1, wherein an average diameter of the colorant is from 0.1 to 1.0 μ

m.

6. The display element of claim 1, wherein the hydrophobicity-giving agent is a metal alkoxide, an organometallic compound containing a metal-to-halogen bond in the molecule or an organometallic compound containing a metal-to-metal bond in the molecule.

7. The display element of claim 1, wherein the first electrode which is transparent comprises SnO₂, In₂O₃ or mixtures thereof.

8. The display element of claim 1, wherein the second electrode is a metallic thin film.

9. The display element of claim 1, wherein the solid polymer electrolyte is selected from the group consisting of polyethyleneoxide, polypropyleneoxide, polyethyleneimine, polyethyelenesulfide, polymethylmethacrylate, polyfluorovinylidene, polychlorovinylidene, polycarbonate, polyacryonitrile and mixtures thereof, or a plurality of layers thereof;

provided that the solid polymer electrolyte further contains a metal sait or an alkylammonium salt.

10. A display apparatus comprising a plurality of display elements according to claim 1, wherein said display apparatus forms a display panel.

11. The display element of claim 1, wherein the solid polymer electrolyte layer further comprises a bluing agent or a fluorescent whitening agent.

12. A method of producing a display apparatus comprising the steps in the order named:

(a) forming an anti-reflecting layer on a transparent substrate;

(b) forming a transparent electrode and a driver element on the transparent substrate on a side opposite to the anti-reflecting layer;

(c) forming a solid polymer electrolyte layer containing a colorant and metal ions on the transparent substrate, wherein;

said metal ions are chosen from silver ions, bismuth ions, and combinations thereof;

said colorant is selected from the group consisting of a powder of titanium oxide, calcium carbonate, magnesium oxide, and aluminum oxide, wherein a surface of the powder is treated with a hydrophobicity-giving agent; and

(d) forming a common electrode at an opposed position to the transparent electrode.

13. A method of producing a display apparatus comprising the steps in the order named:

(a) forming a transparent electrode and a driver element on a transparent substrate;

(b) forming a solid polymer electrolyte layer containing a colorant and metal ions on the transparent substrate, wherein;

said metal ions beingare chosen from silver ions, bismuth ions, and combinations thereof;

said colorant is selected from the group consisting of a powder of titanium oxide, calcium carbonate, magnesium oxide, and aluminum oxide, wherein a surface of the powder is treated with a hydrophobicity-giving agent;

(c) forming a common electrode at an opposed position to the transparent electrode; and

(d) forming an anti-reflecting layer on the transparent substrate at a side opposite to the transparent electrode and the driver element.

14. A method of producing a display apparatus comprising the steps in the order named:

(a) forming a transparent electrode and a driver element on a transparent substrate;

(b) forming an anti-reflecting layer on the transparent substrate at a side opposite to the transparent electrode and the driver element;

(c) forming a solid polymer electrolyte layer containing a colorant and metal ions on the transparent substrate on a side which is formed the transparent electrode and the driver element, wherein;

said metal ions being chosen from silver ions, bismuth ions, and combinations thereof;

said colorant is selected from the group consisting of a powder of titanium oxide, calcium carbonate, magnesium oxide, and aluminum oxide, wherein a surface of the powder is treated with a hydrophobicity-giving agent; and

(d) forming a common electrode at an opposed position to the transparent electrode.