LED platform with membrane
AssigneeLexedis Lighting GmbH
InventorsHiroaki Kawaguchi, Nick Shepherd
Life of this patent
Estimating the term…
Abstract
An LED package comprises: an LED chip having an optically active layer on a substrate, a platform, including a central membrane of which the LED chip is mounted in close thermal contact to the material of the platform, the thickness of the membrane being less than 3/10 the chip dimension (L) the thickness of the supporting frame being more than twice the membrane thickness, typically 10 times and possibility up to 25 times which is integrally formed with the membrane, is substantially larger than the thickness of the membrane, wherein the membrane is provided with at least an electrically isolated through contact filled with electrically conducting material and connected to one of the electrodes of the LED chip.
Claims30
An LED package, comprising:
- an LED chip having an optically active layer on a substrate of length L, and a platform, formed by a supporting frame surrounding a recessed membrane on which the LED chip is mounted in close thermal contact to the material of the platform,
- wherein the membrane forms a bottom portion of the platform and is provided with at least one electrically isolated through contact made from electrically isolated and conducting material and connected to an electrode of the LED chip, the thickness of the membrane is less than 3/10 of the chip length, and the thickness of the supporting frame is more than twice the membrane thickness.
A method for manufacturing an LED package with improved thermal properties, comprising:
- preparing a platform having a membrane with a thickness of less than 1/10 of an LED chip length and forming a bottom portion of the platform, and a frame integrally formed with the membrane and having a thickness which is substantially larger than the thickness of the membrane, wherein during the preparation the membrane is always supported by the frame, the membrane being provided with at least one electrically isolated through contact made from electrically isolated and conducting material and connected to an electrode of an LED chip, and mounting the LED chip on the membrane.
Dependencies are inferred from the claim text.