Bus bar design of an IGU with graded transmission state

Patent metadata

Field	Value
Publication number	US-11988935-B2
Application number	US-202117643644-A
Country	US
Kind code	B2
Filing date	Dec 10, 2021
Priority date	Dec 15, 2020
Publication date	May 21, 2024
Grant date	May 21, 2024

Abstract

An electrochromic apparatus is disclosed. The electrochromic device can include a first bus bar electrically connected to a first transparent conductor, where the first bus bar comprises a first segment between a second segment and a third segment, where the first segment has a first thickness that is less than a second thickness of the second segment and less than a third thickness of the third segment. The electrochromic apparatus can further include a first voltage supply terminal that is offset from a center of the first bus bar.

First claim

What is claimed is:

1. An electrochromic device comprising:
a first bus bar electrically connected to a first transparent conductor, wherein the first bus bar comprises a first segment between a second segment and a third segment, wherein the first segment has a first thickness that is less than a second thickness of the second segment and less than a third thickness of the third segment.

2. The electrochromic device of claim 1 , further comprises a second bus bar electrically connected to a second transparent conductor, wherein the second bus bar comprises a fourth segment between a fifth segment and a sixth segment.

3. The electrochromic device of claim 2 , wherein the fourth segment has a fourth thickness that is less than a fifth thickness of the fifth segment and a sixth thickness of the sixth segment.

4. The electrochromic device of claim 2 , further comprises a second voltage supply terminal electrically connected to the second bus bar.

5. The electrochromic device of claim 1 , wherein the first segment of the first bus bar is a first shape and the second segment of the first bus bar is a second shape, and wherein the first shape is different from the second shape.

6. The electrochromic device of claim 1 , further comprises a substrate with a first side, a second side, a third side, and a fourth side, wherein the first side is opposite to the second side, wherein the third side is orthogonal to the first side, and wherein the fourth side is opposite the third side.

7. The electrochromic device of claim 6 , wherein the first bus bar is along the first side of the substrate, and the second bus bar is along the second side of the substrate.

8. The electrochromic device of claim 1 , further comprises a first voltage supply terminal electrically connected to the first bus bar.

9. The electrochromic device of claim 8 , wherein the first voltage supply terminal is connected to the first segment of the first bus bar.

10. The electrochromic device of claim 9 , wherein the first voltage supply terminal is connected to the first segment of the first bus bar about the center of the first segment.

11. The electrochromic device of claim 10 , wherein the second voltage supply terminal is connected to the fourth segment of the first bus bar.

12. An electrochromic device comprising:
a substrate comprises a first side, a second side, a third side, and a fourth side, wherein the first side is opposite to the second side, wherein the third side is orthogonal to the first side, and wherein the fourth side is opposite the third side;
a first bus bar electrically connected to a first transparent conductor, wherein the first bus bar comprises a first segment with a first length, a second segment with a second length, and a third segment with a third length, wherein the first segment is along the first side of the substrate, the second segment is along the third side of the substrate, and the third segment is along the fourth side of the substrate; and
a second bus bar electrically connected to a second transparent conductor, wherein the second bus bar comprises a fourth segment with a fourth length, a fifth segment with a fifth length, and a sixth segment with a sixth length, wherein the fourth segment is along the second side of the substrate, the fifth segment is along the third side of the substrate, and the sixth segment is along the fourth side of the substrate, and wherein the second segment is closer to the fourth side than the fifth segment, wherein the second segment overlaps the fifth segment.

Assignees

• Sage Electrochromics Inc

Inventors

• Wang Yigang
• Di Bolei
• Giron Jean-Christophe
• Sarrach Sebastian Marius
• Weissler Ariane
• Greer Bryan D

Classifications

• G02F1/1533 Primary

  structural features not otherwise provided for · CPC title

• G02F1/13439

  characterised by their electrical, optical, physical properties; materials therefor; method of making · CPC title

• G02F1/155 Primary

  Electrodes · CPC title