View angle control device

Patent metadata

Field	Value
Publication number	US-11500232-B2
Application number	US-201916586638-A
Country	US
Kind code	B2
Filing date	Sep 27, 2019
Priority date	Oct 19, 2018
Publication date	Nov 15, 2022
Grant date	Nov 15, 2022

Abstract

A view angle control device includes light transmission layers that are arranged at intervals and through which light passes, electrochromic layers having light absorption spectrum characteristics according to voltages applied thereto, the electrochromic layers and the light transmission layers being arranged alternately, first electrodes disposed on one side with respect to the electrochromic layers and arranged to be overlapped with the respective electrochromic layers and contacted with the respective electrochromic layers, and a second electrode disposed on an opposite side from the first electrodes with respect to the electrochromic layers and arranged to be overlapped with and contacted with the electrochromic layers.

First claim

The invention claimed is:

1. A view angle control device comprising:
light transmission layers that are arranged at intervals in a first direction and through which light passes;
electrochromic layers having light absorption spectrum characteristics according to voltages applied thereto, the electrochromic layers and the light transmission layers being formed at a same layer level and arranged alternately in the first direction;
first electrodes arranged at intervals and disposed on one side with respect to the electrochromic layers and arranged to be overlapped with the electrochromic layers and contacted with the electrochromic layers, respectively; and
second electrodes arranged at intervals and disposed on an opposite side from the first electrodes with respect to the electrochromic layers and arranged to be overlapped with and contacted with the electrochromic layers, respectively.

2. The view angle control device according to claim 1 , wherein the first electrodes include first group first electrodes and second group first electrodes, and the view angle control device further comprising:
a first connecting section connected to the first group first electrodes; and
a second connecting section connected to the second group first electrodes.

3. The view angle control device according to claim 2 , wherein the first group first electrodes and the second group first electrodes are arranged alternately in the first direction.

4. The view angle control device according to claim 2 , wherein the second electrodes include first group second electrodes and second group second electrodes, and the view angle control device further comprising:
a third connecting section connected to the first group second electrodes; and
a fourth connecting section connected to the second group second electrodes.

5. The view angle control device according to claim 4 , wherein the first group second electrodes and the second group second electrodes are arranged in a different arrangement pattern from that of the first group first electrodes and the second group first electrodes.

6. The view angle control device according to claim 5 , wherein
the first group first electrodes and the second group first electrodes are arranged alternately in the first direction, and
the first group second electrodes and the second group second electrodes are arranged in the first direction such that at least two of the first group second electrodes are arranged next to each other.

7. The view angle control device according to claim 4 , wherein
the first electrodes extend in a second direction that is perpendicular to the first direction and include first ends and second ends that are opposite ends from the first ends,
the first ends of the first group first electrodes are connected to the first connecting section and the second ends of the second group first electrodes are connected to the second connecting section,
the second electrodes extend in the second direction and include first ends and second ends that are opposite ends from the first ends of the second electrodes, and
the first ends of the first group second electrodes are connected to the third connecting section and the second ends of the second group second electrodes are connected to the fourth connecting section.

8. The view angle control device according to claim 7 , wherein the first group second electrodes and the second group second electrodes are arranged in a different arrangement pattern from that of the first group first electrodes and the second group first electrodes.

9. The view angle control device according to claim 8 , wherein
the first group first electrodes and the second group first electrodes are arranged alternately in the first direction, and
the first group second electrodes and the second group second electrodes are arranged in the first direction such that at least two of the first group second electrodes are arranged next to each other.

10. The view angle control device according to claim 2 , wherein
the first electrodes extend in a second direction that is perpendicular to the first direction and include first ends and second ends that are opposite ends from the first ends, and
the first ends of the first group first electrodes are connected to the first connecting section and the second ends of the second group first electrodes are connected to the second connecting section.

11. The view angle control device according to claim 1 , wherein the second electrodes include first group second electrodes and second group second electrodes, and the view angle control device further comprising:
a third connecting section connected to the first group second electrodes; and
a fourth connecting section connected to the second group second electrodes.

12. The view angle control device according to claim 11 , wherein
the second electrodes extend in a second direction that is perpendicular to the first direction and include first ends and second ends that are opposite ends from the first ends, and
the first ends of the first group second electrodes are connected to the third connecting section and the second ends of the second group second electrodes are connected to the fourth connecting section.

13. The view angle control device according to claim 1 , wherein the electrochromic layers include electrochromic material that have light absorption spectrum characteristics such that optical absorptance is increased when power is supplied thereto compared to a case when no power is supplied.

14. The view angle control device according to claim 1 , further comprising:
a first substrate having a plate surface on which the first electrodes are disposed, the first substrate and at least the electrochromic layers sandwiching the first electrodes therebetween; and
a second substrate having a plate surface on which the second electrodes are disposed, the second substrate and at least the electrochromic layers sandwiching the second electrodes therebetween.

15. The view angle control device according to claim 1 , wherein
the electrochromic layers have a first width measured in the first direction,
the first electrodes have a second width measured in the first direction,
the second electrodes have a third width measured in the first direction, and
the first width, the second width, and the third width are same.

16. The view angle control device according to claim 1 , wherein the light transmission layers are made of transparent synthetic resin.

17. A view angle control device comprising:
light transmission layers that include transparent synthetic resin material and through which light passes, the light transmission layers being separated from each other and arranged at intervals in a first direction;
electrochromic layers including electrochromic material that have light absorption spectrum characteristics according to voltages applied thereto, the electrochromic layers being separated from each other, the electrochromic layers and the light transmission layers being formed at a same layer level and arranged alternately in the first direction;
first electrodes arranged at intervals and disposed on one side with respect to the electrochromic layers and arranged to be overlapped with the electrochromic layers and contacted with the electrochromic layers, respectively; and
a second electrode arranged at intervals and disposed on an opposite side from the first electrodes with respect to the electrochromic layers and arranged to be overlapped with and contacted with the electrochromic layers.

18. Th

Assignees

• Sharp Kk

Inventors

• Noma Mikihiro

Classifications

• G02F1/155

  Electrodes · CPC title

• G02F2001/1517

  Cyano complex compounds, e.g. Prussian blue · CPC title

• G02F2001/1552

  Inner electrode, e.g. the electrochromic layer being sandwiched between the inner electrode and the support substrate · CPC title

• G02F1/1323 Primary

  Arrangements for providing a switchable viewing angle · CPC title

• G02F1/1516 Primary

  comprising organic material · CPC title