Seoul, South Korea
Seoul, South Korea

Seoul Semiconductor Co., Ltd is a Korean company manufacturing LED devices. The company is listed on KOSDAQ.The company is producing LED packages in two plants in Ansan, Korea. The total production capacity is 4 billion LED packages per month. Wikipedia.


Time filter

Source Type

A warm white light emitting apparatus includes a first light emitting diode (LED)-phosphor combination to generate a base light that is white or yellowish white and a second LED-phosphor combination to generate a Color Rendering Index (CRI) adjusting light. The base light the CRI adjusting light together make a warm white light having a color temperature of 2500 to 4500K.


Patent
SixPoint Materials, Inc. and Seoul Semiconductor | Date: 2017-03-29

In one instance, the invention provides a bulk crystal of group III nitride having a thickness of more than 1 mm without cracking above the sides of a seed crystal. This bulk group III nitride crystal is expressed as Gax1Aly1In1-x1-y1N (0x11, 0x2Aly2In1-x2-y2N (0x21, 0x2+y21). The bulk crystal of group III nitride can be grown in supercritical ammonia or a melt of group III metal using at least one seed crystal having basal planes of c-orientation and sidewalls of m-orientation. By exposing only c-planes and m-planes in this instance, cracks originating from the sides of the seed crystal are avoided.


Patent
Seoul Semiconductor | Date: 2017-01-04

A light-emitting device including a film including a plurality of holes, upper conductive patterns for covering the plurality of holes, lower conductive patterns extended from the upper conductive pattern so as to be received in the holes, a bridge part for connecting adjacent upper conductive patterns, and a light-emitting diode chip installed in each of the upper conductive patterns, so that the device may be embodied in a thin film-type as well as maximizes the optical efficiency and heat-radiation, providing an advantage of reduced manufacturing time and cost.


Patent
Seoul Semiconductor | Date: 2017-02-06

A light emitting apparatus is disclosed. The light emitting apparatus includes a light-transmissive substrate having a top surface and a bottom surface, at least one semiconductor light emitting device disposed on the top surface of the light-transmissive substrate, a reflective part disposed over the semiconductor light emitting device to reflect light from the semiconductor light emitting device toward the light-transmissive substrate, and a first wavelength converter disposed between the light-transmissive substrate and the reflective part.


Patent
Seoul Semiconductor | Date: 2017-02-06

A light emitting apparatus is disclosed. The light emitting apparatus includes a light-transmissive substrate having a top surface and a bottom surface, at least one semiconductor light emitting device disposed on the top surface of the light-transmissive substrate, a reflective part disposed over the semiconductor light emitting device to reflect light from the semiconductor light emitting device toward the light-transmissive substrate, and a first wavelength converter disposed between the light-transmissive substrate and the reflective part.


Patent
Seoul Semiconductor | Date: 2017-02-06

A light emitting apparatus is disclosed. The light emitting apparatus includes a light-transmissive substrate having a top surface and a bottom surface, at least one semiconductor light emitting device disposed on the top surface of the light-transmissive substrate, a reflective part disposed over the semiconductor light emitting device to reflect light from the semiconductor light emitting device toward the light-transmissive substrate, and a first wavelength converter disposed between the light-transmissive substrate and the reflective part.


Patent
Seoul Semiconductor | Date: 2017-02-17

The present invention provides a light emitting device comprising a first light emitting portion that emits white light at a color temperature of 6000K or more and a second light emitting portion that emits white light at a color temperature of 3000K or less, which include light emitting diode chips and phosphors and are independently driven. The present invention has an advantage in that a light emitting device can be diversely applied in a desired atmosphere and use by realizing white light with different light spectrums and color temperatures. Particularly, the present invention has the effect on health by adjusting the wavelength of light or the color temperature according to the circadian rhythm of humans.


Patent
Seoul Semiconductor | Date: 2017-02-10

A light-emitting device includes a substrate, a first array of light-emitting elements connected in series and arranged along a first straight line on the substrate, a p-electrode disposed on the substrate and connected to the first array, a second array of light-emitting elements connected in series, arranged along a second straight line on the substrate, and connected to the first array, and an n-electrode disposed on the substrate and connected to the second array. The p-electrode has a surface that faces and is substantially parallel to a surface of the n-electrode.


Patent
SixPoint Materials, Inc. and Seoul Semiconductor | Date: 2017-02-08

A high-pressure cylindrical reactor suitable for a high-pressure process using supercritical ammonia to form bulk crystals of group III nitride or transition metal nitride is disclosed. In one instance, the reactor has a reactor body and lid formed of precipitation hardenable Ni-Cr superalloy and is sealed by a gasket made of Ni-based metal. Ni content of the gasket is greater than Ni content of both the reactor body and lid. The gasket is tapered so that its thickest part is at or near the gaskets inner radius or circumference, and the thinnest part of the gasket is more than 0.2 inch thick and is at or near the gaskets outer radius or circumference. The gaskets surfaces are compressed at 60,000 psi or higher. This construction provides a consistent seal of the reactor for repeated use.


Patent
Seoul Semiconductor | Date: 2017-07-12

Disclosed herein are a light emitting diode (LED) driving circuit and an LED lighting device that may control a color temperature using a dimmer. The LED driving circuit includes: a dimmer modulating an alternating current (AC) voltage input depending on a selected dimming level; a rectifying unit performing a full-wave rectification for the modulated AC voltage output from the dimmer to generate and output a driving voltage; dimming level detecting units receiving the driving voltage of the rectifying unit to detect the selected dimming level and outputting first and second dimming level signals depending on the detected dimming level; a first driving module controlling a first LED light emitting unit using the first dimming level signal of the dimming level detecting unit; and a second driving module controlling a second LED light emitting unit using the second dimming level signal of the dimming level detecting unit, wherein the first and second LED light emitting units are driven to be inversely proportionate to each other, thereby controlling the color temperature.

Loading Seoul Semiconductor collaborators
Loading Seoul Semiconductor collaborators