Patent · US Active

Laminated pane arrangements having an electro-optical functional element

US11415855B2 · kind B2 · utility

0Cited by

1References

17Claims

0Family size

Assignee

SAINT-GOBAIN GLASS FRANCE · FR

Inventors

Stefan Droste · Herzogenrath, DE
Florian Manz · Aachen, DE
Marcel KLEIN · Baesweiler, DE
Bastian KLAUSS · Herzogenrath, DE
Michael ZEISS · Herzogenrath, DE

Key dates

Filing date	Jan 20, 2020
Grant date	Aug 16, 2022
Priority date	—
Expiry date	Jan 20, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG02F2203/01
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A laminated pane arrangement has a functional element based on liquid crystals, wherein the optical properties of the functional element and an electrical resistance heater of at least one flat electrode are controlled by two different AC voltages. In accordance with a first aspect, the functional element is contacted on two opposite sides by the AC voltages. The AC voltages differ in maximum amplitude, but have the same frequency. In accordance with a second aspect, the functional element is controlled by an AC voltage. At least one flat electrode is heated by an additional AC voltage of greater frequency. A fault in the control of the optical properties of the functional element is prevented by high-pass filters.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.