Patent · US Active

Light guide plate and optical display with backlighting

US9952378B2 · kind B2 · utility

1Cited by

1References

19Claims

0Family size

Assignee

Schott AG · DE

Inventors

Gerhard Lautenschlager · Reinheim, DE
Thomas Kloss · Jena, DE
Jochen Alkemper · Klein-Winternheim, DE
Matthias Schmidt · Munich, DE
Andreas Voitsch · Jena, DE

Key dates

Filing date	Aug 17, 2016
Grant date	Apr 24, 2018
Priority date	—
Expiry date	Aug 17, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/0055
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A light guide plate for guiding of visible light for the backlighting of a liquid crystal display is provided. The light guide plate has two parallel lateral faces and at least one edge face, which serves preferably as a light input face. The light guide plate is a glass that contains B2O3 and SiO2 as components, wherein the total content of B2O3 and SiO2 is at least 70 weight percent and the B2O3 content is greater than 10%. The total content of metal oxide of divalent metals in the composition of the glass is less than 3 weight percent. Al2O3 is contained between 1 weight percent and 5 weight percent in the composition.

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