US 11,807,082 B2
Optical impression of a PDLC vehicle pane through a combination of dark inner and outer stacks
Florian Manz, Aachen (DE); Michael Labrot, Aachen (DE); Jefferson Do Rosario, Aachen (DE); and Valentin Schulz, Niederzier (DE)
Assigned to SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
Appl. No. 17/042,574
Filed by SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
PCT Filed Feb. 4, 2019, PCT No. PCT/EP2019/052629
§ 371(c)(1), (2) Date Sep. 28, 2020,
PCT Pub. No. WO2019/185221, PCT Pub. Date Oct. 3, 2019.
Claims priority of application No. 18163891 (EP), filed on Mar. 26, 2018.
Prior Publication US 2021/0016640 A1, Jan. 21, 2021
Int. Cl. B60J 3/00 (2006.01); B32B 17/10 (2006.01); B60J 1/00 (2006.01); B60J 3/04 (2006.01); G02B 5/20 (2006.01); G02B 5/26 (2006.01); G02F 1/1334 (2006.01); G02F 1/1335 (2006.01); G02F 1/137 (2006.01)
CPC B60J 3/007 (2013.01) [B32B 17/1011 (2013.01); B32B 17/10036 (2013.01); B32B 17/1077 (2013.01); B32B 17/10174 (2013.01); B32B 17/10357 (2013.01); B32B 17/10504 (2013.01); B32B 17/10651 (2013.01); B32B 17/10761 (2013.01); B60J 1/001 (2013.01); B60J 3/04 (2013.01); G02B 5/208 (2013.01); G02B 5/26 (2013.01); G02F 1/137 (2013.01); G02F 1/1334 (2013.01); G02F 1/133509 (2013.01); B32B 2605/00 (2013.01); G02F 2203/055 (2013.01); G02F 2203/11 (2013.01); G02F 2203/48 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A vehicle pane, comprising, in this order
a) an outer glass pane,
b) one or a plurality of laminated layers,
c) a PDLC layer, comprising a polymer matrix, in which liquid crystal droplets are embedded, and in each case an electrically conductive layer on both sides of the polymer matrix,
d) one or a plurality of laminated layers, and
e) an inner glass pane,
wherein a TL(inside) is in the range from 5 to 46% and a TL(outside) is in the range from 20 to 73% and the TL(outside) is greater than or equal to the TL(inside), wherein TL(inside) is the light transmittance of an inner stack that is formed by the inner glass pane and the layers between the PDLC layer and the inner glass pane, and the TL(outside) is the light transmittance of an outer stack that is formed by the outer glass pane and the layers between the PDLC layer and the outer glass pane, and
wherein the ratio TL(outside)/TL(inside) is in the range from 3 to 2.