US 12,253,783 B2
High performance privacy glazing structures
Nicolas Le Houx, Minneapolis, MN (US); Hari Atkuri, Plymouth, MN (US); Andrew DeMiglio, Savage, MN (US); and Eric Bjergaard, Minneapolis, MN (US)
Assigned to Cardinal IG Company, Eden Prairie, MN (US)
Filed by Cardinal IG Company, Eden Prairie, MN (US)
Filed on Oct. 2, 2023, as Appl. No. 18/479,696.
Application 18/479,696 is a continuation of application No. 17/121,000, filed on Dec. 14, 2020, granted, now 11,774,825.
Application 17/121,000 is a continuation of application No. 15/958,724, filed on Apr. 20, 2018, granted, now 10,866,480, issued on Dec. 15, 2020.
Claims priority of provisional application 62/487,791, filed on Apr. 20, 2017.
Prior Publication US 2024/0027865 A1, Jan. 25, 2024
Int. Cl. G02F 1/01 (2006.01); B32B 17/10 (2006.01); G02F 1/155 (2006.01); E06B 3/67 (2006.01); E06B 9/24 (2006.01); G02F 1/1516 (2019.01)
CPC G02F 1/155 (2013.01) [B32B 17/10045 (2013.01); B32B 17/10055 (2013.01); B32B 17/10174 (2013.01); B32B 17/10201 (2013.01); B32B 17/10357 (2013.01); B32B 17/10467 (2013.01); B32B 17/10504 (2013.01); B32B 17/10513 (2013.01); B32B 2307/202 (2013.01); B32B 2307/402 (2013.01); B32B 2307/412 (2013.01); B32B 2315/08 (2013.01); B32B 2329/06 (2013.01); E06B 3/6715 (2013.01); E06B 2009/2464 (2013.01); G02F 1/15165 (2019.01); G02F 2001/1552 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A privacy glazing structure comprising:
a first pane of transparent material;
a second pane of transparent material that is generally parallel to the first pane of transparent material;
a spacer positioned between the first pane of transparent material and the second pane of transparent material to define a between-pane space, the spacer sealing the between-pane space from gas exchange with a surrounding environment and holding the first pane of transparent material a separation distance from the second pane of transparent material;
a third pane of transparent material that is generally parallel to the first pane of transparent material and the second pane of transparent material;
a fourth pane of transparent material that is generally parallel to the third pane of transparent material;
an electrically controllable optically active material positioned between the third pane of transparent material and the fourth pane of transparent material;
a first laminate layer bonding the second pane of transparent material to the third pane of transparent material, the first laminate layer providing a barrier to ultraviolet light that would otherwise impinge upon the electrically controllable optically active material;
a fifth pane of transparent material; and
a second laminate layer bonding the fourth pane of transparent material to the fifth pane of transparent material,
wherein the first pane of transparent material has a thickness ranging from 2 mm to 6 mm, and the second, third, fourth, and fifth panes of transparent material each have a thickness ranging from 0.5 mm to 4.0 mm.