US 2014/0153239 A1 · LIGHT EMITTING DIODE AND ILLUMINATION DEVICE USING SAME

Abstract

The present invention relates to a light emitting diode (LED). The LED comprises an LED die, one or more metal pads, and a fluorescent layer. The characteristics of the present invention include that the metals pads are left exposed for the convenience of subsequent wiring and packaging processes. In addition, the LED provided by the present invention is a single light-mixing chip, which can be packaged directly without the need of coating fluorescent powders on the packaging glue. Because the fluorescent layer and the packaging glue are not processed simultaneously and are of different materials, the stress problem in the packaged LED can be reduced effectively.

Claims35

Dependent claims

A light emitting diode comprises:

an LED die comprising a transparent substrate and a light emitting structure disposed on said transparent substrate;
at least two metal pads setting on said LED die, wherein top surfaces of said metal pads set on the same plane essentially;
and
a fluorescent layer setting on said LED die and exposing said metal pads;
wherein said light emitting structure comprises a first semiconductor, a light emitting layer set on said first semiconductor layer, and a second semiconductor layer set on said light emitting layer;
and
wherein said metal pads set on said transparent substrate, and the thickness of said fluorescent layer is greater than 30 um.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/174,010Filed 6 Feb 2014

Priority

26 Aug 2009

Published

5 Jun 2014

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

H10H 20/8516
Wavelength conversion means: having a non-uniform spatial arrangement or non-uniform concentration, e.g. patterned wavelength conversion layer or…
H10H 20/831
Electrodes: characterised by their shape
H10H 20/0361
Of packages: of wavelength conversion means
H10H 20/8514
Wavelength conversion means: characterised by their shape, e.g. plate or foil

Family

Application12/547,571Continuation in part · filed 26 Aug 2009

Application61/871,843Us provisional application · filed 29 Aug 2013

Application14/174,010Continuation in part

US 2010/0078667 A1Published application

US 8,698,175 B2Related patent

US 9,029,898 B2Related patent

US 2014/0153239 A1This patent

From the US filing history. Foreign family members aren’t listed.

Light emitting diode and illumination device using same

Life of this patent

Light emitting diode and illumination device using same

Life of this patent

Abstract

Claims35