Koninklijke Philips Corporation N.V.

U.S. Philips Corporation

Lumileds LLC

Uwe Mackens

Mareike K Klee

April Dawn Schricker

Kim Kevin Mai

Joost Peter Andre Vogels

Rainer Kiewitt

Hans-Helmut Bechtel

Grigoriy Basin

Olaf Wunnicke

Robert Frederick Milsom

Aldegonda Lucia Weijers

Matthias Heidemann

Thomas Diederich

Wilhelm Georg Hermann

Hans Peter L&ouml;bl

Karl Adriaan Zijtveld

Martinus Hermanus Wilhemus Maria Van Delden

Peter Josef Schmidt

Carsten Deppe

Marc Andre De Samber

Joachim F Opitz

Ulrich Weichmann

Mark Carpaij

Johannes Baier

Jens Pollmann-Retsch

Pavel Pekarski

Hans-Wolfgang Brand

Martin Fleuster

Yuri Aksenov

John-john Pieter Jan Van Den Bergh

Antonius J M Nellisen

Antal F J Baggerman

Jan Renier Marie Hochstenbach

Wilhelm Herrmann

Paulus H M Keizer

Detley Hennings

Baby Seriyati Schreinemacher

A ceramic green wavelength conversion element () is coated with a red wavelength conversion material () and placed above a blue light emitting element () such that the ceramic element () is attached to the light emitting element (), thereby providing an efficient thermal coupling from the red and green converters () to the light emitting element () and its associated heat sink. To protect the red converter coating () from the effects of subsequent processes, a sacrificial clear coating () is created above the red converter element (). This clear coating () may be provided as a discrete layer of clear material, or it may be produced by allowing the red converters to settle to the bottom of its suspension material, thereby forming a converter-free upper layer that can be subjected to the subsequent fabrication processes.

LED with ceramic green phosphor and protected red phosphor layer

A method according to embodiments of the invention includes providing a plurality of LEDs attached to a mount. A filter is attached to at least one of the plurality of LEDs. A protective layer is formed over the filter. A reflective layer is formed over the mount. A portion of the reflective layer disposed over the protective layer is removed.

Light emitting device including a filter and a protective layer

A method according to embodiments of the invention includes providing a plurality of LEDs () attached to a mount (). A filter () is attached to at least one of the plurality of LEDs. A protective layer () is formed over the filter. A reflective layer () is formed over the mount. A portion of the reflective layer disposed over the protective layer is removed.

A methodof manufacturing a (part of) color ring is provided. The color ring converts a color of light emitted by a light emitter into at least one other color. The method () comprising the steps of: i) pressing () a first ring body of a first granulated precursor comprising a first luminescent material for converting the color of the light of the light emitter into a first one of the at least one other color, and ii) sintering () the first ring body for obtaining a first ceramic ring. The color ring comprises at least a segment of the first ceramic ring. Further, the method may comprises the steps of: iii) pressing () a second ring body of a second granulated precursor, wherein the first luminescent material is absent, iv) sintering () the second ring body for obtaining a second ceramic ring, v) segmenting () the first ceramic rings in at least two parts and segmenting () the second ceramic ring in at least two parts, and vi) forming () at least a part of the color ring by coupling a part of the first ceramic ring and a part of the second ceramic ring.

Method of manufacturing a part of a color ring and a part of a color ring

In this method an arc-length control value, indicating the current length of a discharge arc of the gas-discharge lamp (), is monitored and the lamp () is driven in a first operation mode (OMP) with a first current wave-shape when the arc-length control value indicates that the arc-length is higher than a switching threshold, which first current wave-shape is selected to result in a tip () growing on an electrode () of the lamp (), and the lamp () is driven in a second operation mode (OMn) with a second current wave-shape when the arc-length control value indicates that the arc-length is lower than a switching threshold, which second current wave-shape is selected such that the tip () on the electrode () is at least partly melted back. In this method an operating frequency of the lamp is switched from a first frequency value (fi) to a second frequency value (f), which second frequency &#x2022; (f) value is higher than the first frequency value (fi)', if a first time criterion pertaining to a duration of driving of the lamp () in the second operation mode (OMn) is fulfilled and the operating frequency is switched from the second frequency value (f) to the first frequency value (fi), if a second time criterion pertaining to a duration of driving of the lamp () in the first operation mode (OMP) is fulfilled.

Method and driving unit for driving a gas-discharge lamp

The invention relates to a thin film capacitor with a carrier substrate, at least two interdigitated electrodes, and a dielectric. A staggered arrangement of at least one interdigitated electrode below the dielectric with respect to an interdigitated electrode above the dielectric results in a breakdown-resistant thin film capacitor which can be manufactured in the same production process as a standard monolayer capacitor.

Breakdown-resistant thin film capacitor with interdigitated structure

The invention relates to the dielectric composition on the basis of barium titanate (BaTiO) that is present with Ba(ZnNb)Oin a perovslite structure, which dielectric composition exhibits an average grain size din the range of 0.2 &#x3bc;m to 0.5 &#x3bc;m and a crystallite size dbelow 0.3 &#x3bc;m.

Dielectric composition on the basis of barium titanate

The invention describes a tunable filter arrangement with at least two resonators which are coupled to one another and of which at least one is connected to a capacitor with tunable capacitance. The electrical properties of the resonator, and thus the overall filter characteristic, can be changed through a change in the capacitance of the capacitor. Furthermore, a transmitter, a receiver, a mobile telephone device, and a wireless data transmission system comprising such a filter arrangement are disclosed, as is a tunable bulk acoustic wave resonator.

Tunable piezoelectric filter arrangement using a dielectric material with a voltage-dependent dielectric constant

The invention describes a tunable filter arrangement with a plurality of resonators which are coupled to one another and of which there is at least one which comprises a piezoelectric component made of a ferroelectric material and to which a DC voltage source is connected. The application of a DC voltage to the resonator renders it possible to change its electrical properties and thus the overall filter characteristic. Furthermore, a transmitter, a receiver device, and a mobile telephone device with such a filter arrangement are disclosed, aswell as a tunable bulk acoustic wave resonator.

Tunable filter arrangement comprising resonators with reflection layers

The invention relates to a thin film circuit with component. The thin film circuit comprises a network of capacitors, or a network of capacitors and resistors, or a network of capacitors, resistors and inductances, or a network of capacitors and inductances. Current supply contacts such as, for example, SMD end contacts or bump end contacts render it possible for the thin film circuit to be connected to further components of a circuit or, for example, to be combined with active components through the use of contact surfaces.

Thin film circuit with component

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Aachen, Germany

Uwe Mackens