ELECTROCHROMIC DISPLAY ELEMENT, DISPLAY DEVICE, INFORMATION SYSTEM, AND ELECTROCHROMIC DIMMING LENS

• US 20150331295A1
• Filed: 05/05/2015
• Published: 11/19/2015
• Est. Priority Date: 05/13/2014
• Status: Active Grant

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: Takahashi, Hiroyuki, Horiuchi, Tamotsu, Yashiro, Tohru, Yutani, Keiichiroh, Okada, Yoshinori, Kim, Sukchan, Fujimura, Koh, Naijo, Yoshihisa, Tsuji, Kazuaki, Hirano, Shigenobu, Sagisaka, Toshiya, Inoue, Mamiko, Yamamoto, Satoshi, Goto, Daisuke
• Granted Patent: US 9,829,762 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02F 1/1347 Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
• CPC Class Codes: G02F 1/1524 Transition metal compounds
• CPC Class Codes: G02F 1/15245 based on iridium oxide or hydroxide
• CPC Class Codes: G02F 1/1533 structural features not otherwise provided for
• CPC Class Codes: G02F 1/155 Electrodes
• CPC Class Codes: G02F 2001/1536 additional, e.g. protective, layer inside the cell
• CPC Class Codes: G02F 2001/1555 Counter electrode

Abstract

To provide an electrochromic display element, which contains: a display substrate; a display electrode; an electrochromic layer provided in contact with the display electrode; a counter substrate provided to face the display substrate; a counter electrode; a charge retention layer provided in contact with the counter electrode; and an electrolyte layer filling between the display substrate and the counter substrate, wherein the electrochromic layer contains titanium oxide particles, and metal hydroxide is dispersed on surfaces and in inner parts of the titanium oxide particles.

Claims

1. An electrochromic display element, comprising:

a display substrate;

a display electrode;

an electrochromic layer provided in contact with the display electrode;

a counter substrate provided to face the display substrate;

a counter electrode;

a charge retention layer provided in contact with the counter electrode; and

an electrolyte layer filling between the display substrate and the counter substrate,

wherein the electrochromic layer contains titanium oxide particles, and metal hydroxide is dispersed on surfaces and in inner parts of the titanium oxide particles.

3. The electrochromic display element according to claim 1, wherein the metal hydroxide is aluminium hydroxide.

4. The electrochromic display element according to claim 1, wherein an amount of the metal hydroxide in the titanium oxide particles is 3% by mass to 15% by mass.

7. A display device, comprising:

the electrochromic display element according to claim 1;

a first memory unit configured to store display data; and

a display controller configured to control the electrochromic display element according to the display data.

9. Information equipment, comprising:

the display device according to claim 7; and

a controlling device configured to control information to be displayed on the display device.

2. An electrochromic display element, comprising:

a display substrate;

a display electrode;

an electrochromic layer provided in contact with the display electrode;

a counter substrate provided to face the display substrate;

a counter electrode;

a charge retention layer provided in contact with the counter electrode;

a white reflection layer provided between the electrochromic layer and the charge retention layer; and

an electrolyte layer filling between the display substrate and the counter substrate,

wherein the electrochromic layer and the white reflection layer both contain titanium oxide particles, and metal hydroxide is dispersed on surfaces and in inner parts of the titanium oxide particles.

5. The electrochromic display element according to claim 2, wherein the metal hydroxide is aluminium hydroxide.

6. The electrochromic display element according to claim 2, wherein an amount of the metal hydroxide in the titanium oxide particles is 3% by mass to 15% by mass.

8. A display device, comprising:

the electrochromic display element according to claim 2;

a first memory unit configured to store display data; and

a display controller configured to control the electrochromic display element according to the display data.

10. Information equipment, comprising:

the display device according to claim 8; and

a controlling device configured to control information to be displayed on the display device.

11. An electrochromic dimming lens, comprising:

a lens;

a first electrode layer laminated on the lens;

an electrochromic layer laminated on the first electrode layer;

a porous insulation layer laminated on the electrochromic layer;

a second electrode layer, which is porous, and is laminated on the porous insulation layer;

an antidegradation layer provided in contact with the second electrode layer, and provided at an upper side, or a bottom side, or both sides of the second electrode layer; and

an electrolyte layer filling between the first electrode layer and the second electrode layer, and provided in contact with the electrochromic layer and the antidegradation layer,

wherein the electrochromic layer contains titanium oxide particles, and metal hydroxide is dispersed on surfaces and in inner parts of the titanium oxide particles.

12. The electrochromic dimming lens according to claim 11, wherein the metal hydroxide is aluminium hydroxide.

13. The electrochromic dimming lens according to claim 11, wherein an amount of the metal hydroxide in the titanium oxide particles is 3% by mass to 15% by mass.