News Column

Patent Issued for Light Emitting Device Package and Lighting System

August 13, 2014



By a News Reporter-Staff News Editor at Journal of Engineering -- According to news reporting originating from Alexandria, Virginia, by VerticalNews journalists, a patent by the inventor Kim, Geun Ho (Seoul, KR), filed on January 4, 2011, was published online on July 29, 2014.

The assignee for this patent, patent number 8791495, is LG Innotek Co., Ltd. (Seoul, KR).

Reporters obtained the following quote from the background information supplied by the inventors: "The embodiment relates to a light emitting device package and a lighting system.

"A light emitting diode (LED) is a semiconductor light emitting device that converts current into light. A wavelength of light emitted from the LED may vary depending on a semiconductor material used for manufacturing the LED. This is because the wavelength of the emitted light varies depending on the energy difference between valance band electrons and conduction band electrons, that is, the bandgap of the semiconductor material.

"The LED can generate light having high brightness, so that the LED has been extensively used as a light source for a display device, a vehicle, or a lighting device. In addition, the LED can represent a white color having superior light efficiency by employing luminescence materials or combining LEDs having various colors."

In addition to obtaining background information on this patent, VerticalNews editors also obtained the inventor's summary information for this patent: "The embodiment provides a light emitting device package having a novel structure and a lighting system.

"The embodiment provides a light emitting device package capable of emitting light with reduced color variation and a lighting system.

"A light emitting device package according to the embodiment may include a body; first and second electrode layers on the body; a light emitting device electrically connected to the first and second electrode layers on the body; a luminescent layer on the light emitting device; and an encapsulant layer including particles on the luminescent layer, wherein an effective refractive index of the encapsulant layer has a deviation of 10% or less with respect to an effective refractive index of the luminescent layer.

"A light emitting device package according to the embodiment may include a body; first and second electrode layers on the body; a light emitting device electrically connected to the first and second electrode layers on the first and second electrode layers; a luminescent layer having a uniform thickness on the light emitting device; and an encapsulant layer including particles on the luminescent layer.

"A lighting system according to the embodiment may include a substrate; and at least one light emitting device package installed on the substrate to serve as a light source, wherein the light emitting device package may include a body; first and second electrode layers on the body; a light emitting device electrically connected to the first and second electrode layers on the body; a luminescent layer on the light emitting device; and an encapsulant layer including particles on the luminescent layer, and wherein an effective refractive index of the encapsulant layer has a deviation of 10% or less with respect to an effective refractive index of the luminescent layer."

For more information, see this patent: Kim, Geun Ho. Light Emitting Device Package and Lighting System. U.S. Patent Number 8791495, filed January 4, 2011, and published online on July 29, 2014. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=8791495.PN.&OS=PN/8791495RS=PN/8791495

Keywords for this news article include: Electronics, Semiconductor, LG Innotek Co. Ltd..

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Journal of Engineering


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