Az Electronic Materials (luxembourg) S.a.r.l.

Schott-gerate Gmbh

Az Electronic Materials USA Corp.

Merck Patent Gmbh

Dieter Wagner

Fumio Kita

Ralf Grottenmüller

Abraham Casas Garcia-Minguillan

Rosalin Karunanandan

Helmut Lenz

Ralf Grottenmueller

Andreas Dresel

Roland Glatzer

Robert Wiacek

Wolfgang Zahn

Horst Huebner

Guenter Riege

Jochen K Lehmann

Guenther Beintze

Peter Hofbauer

Daniel P Russell

Guenter Tauber

Ralph Grottenmüller

Zehra Serpil Gonen Williams

Jutta Hartmann

The present invention relates to a formulation suitable for the preparation of a highly refractive encapsulation material with good barrier properties towards water vapor for an LED, to an encapsulation material for an LED having a high refractive index and good barrier properties towards water vapor which is obtainable from said formulation and to a light emitting device (LED) comprising said encapsulation material. The formulation comprises a polymer comprising a first repeating unit Uand a second repeating unit U; and a surface-modified nanoparticle, wherein the surface-modified nanoparticle does not contain any zirconium dioxide.

Formulation for an LED encapsulation material

The present invention relates to a formulation suitable for the preparation of a highly refractive encapsulation material with good barrier properties towards water vapor for an LED, to an encapsulation material for an LED having a high refractive index and good barrier properties towards water vapor which is obtainable from said formulation and to a light emitting device (LED) comprising said encapsulation material. The formulation comprises a polymer comprising a first repeating unit Mand a second repeating unit M; and a surface-modified zirconium dioxide nanocrystal.

Formulation for LED encapsulation material

The present invention relates to a method for producing silazane-siloxa copolymers and the use of such copolymers, particularly in LEDs.

Method for producing silazane-siloxane copolymers and the use of such copolymers

The invention relates to the use of a hybrid material comprising

Hybrid material for use as coating means in optoelectronic components

A hybrid material for light emitting diodes, comprising

Hybrid material for optoelectronic applications

The invention relates to the use of specific organopolysilazanes as an encapsulation material for light emitting diodes (LED). The organopolysilazane polymers act as insulating filling materials and are stable over temperature and over exposure to ambient UV radiation. The encapsulating material has good thermal stability against discoloration to yellow by aging even at high temperatures which is a key factor for the long lifetime of an LED encapsulant and the LED performance.

Encapsulation material for light emitting diodes

A compound of the formula (I) where the symbols and indices are each defined as follows:  

Light-sensitive component for use in photoresists

A process and a device for determining the viscosities of liquids are described, which work quickly, reliably and accurately. The process according to the invention makes use of the fact that disturbing effects are eliminated when measuring the change in the rate of flow of the liquid from the viscometer, while utilizing the change in the hydrostatic pressure during viscosity measurement and that the viscosities can be reliably determined from the measured data by the Hagen-Poiseuille law. The viscometer according to the invention is designed so that the hydrostatic pressure change during measurement is maximal.

Process and device for determining the viscosity of liquids

A capillary viscometer in which the liquid meniscus is detected by sensing electrical resistance changes in hermetically sealed electrical resistors which are spaced apart at the two levels in the measuring tube in which the meniscus is to be detected. The resistors are encased in glass and the electrical leads to these resistors are passed through glass tubes to a cable connector.

Growing community of inventors

Wiesbaden, Germany

Dieter Wagner