Samsung Electronics Co., Ltd.

Samsung Electro-mechanics Co., Ltd.

Samsung Led Co., Ltd.

Yu-Sik Kim

Seung-Jae Lee

Sun-Pil Youn

Seong-deok Hwang

Hyung-kun Kim

Woo-Sung Han

Sang-Joon Park

Joong-Hee Lee

Ho-seong Seo

Cheol-soo Sone

Doo-Sik Shin

Mun-Kue Park

Yong-Chan Keh

Kyoung-kook Kim

Jae-Myung Baek

Jae-wook Jeong

In a light emitting device and system providing white light with various color temperatures are provided, a light emitting device includes a light emitting element (LED) that is operated by a driving bias and emits first light, and a phosphor layer including a phosphor that partially wavelength-converts first light and emits second light, thereby emitting white light using the first light and the second light, wherein the phosphor has a maximum conversion efficiency at a first level of the driving bias, and the LED has a maximum conversion efficiency at a second level of the driving bias, the first level being different from the first level.

Light emitting device and system providing white light with various color temperatures

The present invention is directed to a vertical-type luminous device and high throughput methods of manufacturing the luminous device. These luminous devices can be utilized in a variety of luminous packages, which can be placed in luminous systems. The luminous devices are designed to maximize light emitting efficiency and/or thermal dissipation. Other improvements include an embedded zener diode to protect against harmful reverse bias voltages.

Luminous devices, packages and systems containing the same, and fabricating methods thereof

Provided are a method of fabricating a light-emitting apparatus with improved light extraction efficiency and a light-emitting apparatus fabricated using the method. The method includes: preparing a monocrystalline substrate; forming an intermediate structure on the substrate, the intermediate structure comprising a light-emitting structure which comprises a first conductive pattern of a first conductivity type, a light-emitting pattern, and a second conductive pattern of a second conductivity type stacked sequentially, a first electrode which is electrically connected to the first conductive pattern, and a second electrode which is electrically connected to the second conductive pattern; forming a polycrystalline region, which extends in a horizontal direction, by irradiating a laser beam to the substrate in the horizontal direction such that the laser beam is focused on a beam-focusing point within the substrate; and cutting the substrate in the horizontal direction along the polycrystalline region.

Method of fabricating light-emitting apparatus with improved light extraction efficiency and light-emitting apparatus fabricated using the method

Provided are a light-emitting device having improved light dispersion efficiency, a light-emitting system including the same, and fabricating methods of the light-emitting device and the light-emitting system. The light-emitting device includes one or more light-emitting elements arranged on first surface of a substrate, an insulation film formed on the first surface of a substrate so as to cover the one or more light-emitting elements, and a plurality of uneven patterns formed on the insulation film formed on each of the one or more light-emitting elements so as to be spaced apart from each other, wherein the plurality of uneven patterns are all convex patterns or concave patterns and each of the plurality of uneven patterns has a curved cross-sectional shape.

Light-emitting device and light-emitting system including the same

A sub-mount adapted for AC and DC operation of devices mountable thereon, light emitting devices including such a sub-mount, and methods of manufacturing such a sub-mount are provided. The sub-mount includes a base substrate having first and second surfaces, a conductive pattern on the first surface, first and second pairs of first and second electrodes on the second surface and vias extending through the base substrate between the first and second surfaces. The conductive pattern includes a first set of mounting portions and two via portions along a first electrical path between the first pair of first and second electrodes, and a second set of mounting portions and two via portions along a second electrical path between the second pair of first and second electrodes, the via portions connecting respective portions of the conductive pattern to respective electrodes.

Light emitting device including a light emitting element mounted on a sub-mount

An emitting device includes a first electrode on a base substrate, a second electrode on the base substrate, a third electrode on the base substrate, an emitting structure on and/or at a same level as the first electrode, a first pattern on the base substrate being electrically connected to the first electrode, and a plurality of second patterns on the base substrate, wherein at least one of the second patterns is arranged on a first side of the first pattern and is electrically connected to the second electrode and at least another one of the second patterns is arranged on a second side of the first pattern and is electrically connected to the third electrode, the first side opposing the second side.

Light emitting elements, light emitting devices including light emitting elements and methods of manufacturing such light emitting elements and/or device

Provided are a light-emitting element and a method of fabricating the same. The light-emitting element includes: a first pattern including conductive regions and non-conductive regions. The non-conductive regions are defined by the conductive regions. The light-emitting element also include an insulating pattern including insulating regions and non-insulating regions which correspond respectively to the conductive regions and non-conductive regions. The non-insulating regions are defined by the insulating regions. The light-emitting element further includes a light-emitting structure interposed between the first pattern and the insulating pattern. The light-emitting structure includes a first semiconductor pattern of a first conductivity type, a light-emitting pattern, and a second semiconductor pattern of a second conductivity type which are stacked sequentially. The light-emitting element also includes a second pattern formed in the non-insulating regions.

Method of fabricating a light-emitting element

Example embodiments are directed to a light emitting package having a structure that prevents variance in a depth of a cavity in which a chip is mounted and a method of fabricating the same. A light emitting package includes a package body including a first body including the cavity and a second body bonded to the first body. The cavity penetrates the first body. A first electrode and a second electrode separate from each other are on the package body. A first dielectric layer is between the package body and the first electrode and between the package body and the second electrode. A light emitting element is placed in the cavity and electrically connected to the first electrode and the second electrode. A method of fabricating the light emitting package includes forming the first body and the second body bonded to the first body through a dielectric layer, forming the cavity in the first body and forming the light emitting element in the cavity.

Light emitting package and methods of fabricating the same

Provided is a light emitting element, a light emitting device including the same, and fabrication methods of the light emitting element and light emitting device. The light emitting device comprises a substrate, a light emitting structure including a first conductive layer of a first conductivity type, a light emitting layer, and a second conductive layer of a second conductivity type which are sequentially stacked, a first electrode which is electrically connected with the first conductive layer; and a second electrode which is electrically connected with the second conductive layer and separated apart from the first electrode, wherein at least a part of the second electrode is connected from a top of the light emitting structure, through a sidewall of the light emitting structure, and to a sidewall of the substrate.

Light emitting element with improved light extraction efficiency, light emitting device comprising the same, and fabricating method of the light emitting element and the light emitting device

Light-emitting devices are provided, the light-emitting devices include a light-emitting structure layer having a first conductive layer, a light-emitting layer and a second conductive layer sequentially stacked on a first of a substrate, a plurality of seed layer patterns formed apart each other in the first conductive layer; and a plurality of first electrodes formed through the substrate, wherein each of the first electrodes extends from a second side of the substrate to each of the seed layer patterns.

Light-emitting devices

A light guiding plate may include a substrate, a waveguide, and a reflective metal. The waveguide and the reflective metal may be formed on the substrate. The waveguide may guide light. The reflective metal may reflect the light guided along the waveguide to change a propagation direction of the light. A light guiding plate may include a substrate, a cladding layer, and a plurality of waveguides. The cladding layer may be formed on the substrate. The cladding layer may include a first insulating layer having a first refractive index. The plurality of waveguides may be formed on the cladding layer. The plurality of waveguides may include a second insulating layer having a second refractive index. The second refractive index may be higher than the first refractive index. The plurality of waveguides may guide light provided by a light emitting element. At least two of the waveguides may have different lengths.

Light guiding plates and light emitting devices including the same

A light-emitting device having improved light conversion efficiency, a light-emitting system including the same, and fabricating methods of the light-emitting device and the light-emitting system, are provided. The light-emitting device includes one or more light-emitting elements arranged on one surface of a substrate, and a phosphor layer disposed inside or on the substrate to a predetermined thickness and partially wavelength-converts the light emitted from the one or more light-emitting elements into light having different wavelength, wherein a light conversion efficiency of the phosphor layer is maximized when the phosphor layer has the predetermined thickness.

Growing community of inventors

Suwon-si, South Korea

Yu-Sik Kim