Glbtech Co., Ltd.

Samsung Electronics Co., Ltd.

Han Do Kim

Byung Soon Kim

Yong Sun Choi

Guen Ryeol Park

Eun Mi Park

Hyoungshin Park

Won-Kyu Sung

Ik-Sang Kim

Minah Koh

Seon-Keun Park

Jiseung Song

Ji-Su Hwang

Nam-Hyun Kang

Young Sik Choi

The present invention relates to a white light source and illumination apparatus for limiting wavelength of 450 nm or less and, more particularly, to a white light source and illumination apparatus for lighting in a lithography or other process, capable of realizing white light even with the limited wavelength of 450 nm or less light. Disclosed is a white light illumination apparatus for limiting wavelength of 450 nm or less, the apparatus comprising a white light source comprising: a blue light-emitting diode element having an emission peak wavelength of 450-490 nm; and an encapsulation layer which encapsulates the blue light-emitting diode element, wherein in the encapsulation layer, one or more phosphors which realize white light emission along with the blue light-emitting diode element, and a blocking agent which blocks light of wavelength of 450 nm or less are scattered, thus forming a first peak region at a wavelength of 450-490 nm and a second peak region which realizes white light emission in combination with the first peak region and limiting the wavelength of 450 nm or less.

White light source and illumination apparatus for lighting in lithography process

The present invention relates to an LED illuminant module and lighting apparatus and, more specifically, to a high color rendering D50/D65 standard LED illuminant module and lighting apparatus, which has both high color rendering properties and excellent metamerism index characteristics by using a high color rendering LED and an ultraviolet LED. An illuminant module according to an embodiment of the present invention comprises: at least one ultraviolet light-emitting diode (LED) device having a peak emission wavelength of 300 nm-400 nm; and at least one first white light-emitting diode (LED) device having an average color rendering index of 90% or higher, wherein the first white light-emitting diode (LED) device is a light-emitting diode (LED) device which comprises a first LED chip having an excitation wavelength of 440 nm-460 nm, and a first phosphor layer excited at the excitation wavelength of the first LED chip to emit light, and the first phosphor layer comprises: a first phosphor having a peak emission wavelength of 440 nm-499 nm; a second phosphor having a peak emission wavelength of 500 nm-580 nm; and a third phosphor having a peak emission wavelength of 600 nm-699 nm.

High color rendering D50/D65 standard LED illuminant module and lighting apparatus

A cover accessory capable of operating a light emitting device without a separate power source and an electronic device including the cover accessory are provided. A cover accessory includes a cover that is detachably combinable with an electronic device and formed to surround a rear plate and a lateral member of the electronic device. The cover includes a recess formed to correspond to the rear plate of the electronic device. The cover accessory includes a circuit board disposed in the recess such that a surface thereof faces the recess, a light source layer including a plurality of light emitting devices disposed on the surface of the circuit board, a wireless power receiving module disposed on one of the surface or an opposite surface of the circuit board, and a cover processor disposed on one of the surface or the opposite surface of the circuit board and electrically connected to the wireless power receiving module and the plurality of light emitting devices of the light source layer.

Cover accessory and electronic device including the same

Various embodiments relating to an electronic device comprising an accessory are described. An electronic device according to one embodiment comprises: a first electronic device forming a first curved surface on at least one side and including at least one first magnet on the first curved surface; a second electronic device forming a second curved surface on at least one side and including at least one second magnet on the second curved surface; and an accessory structure including third and fourth curved surfaces facing the first and second curved surfaces, and including at least one third and fourth magnets on the third and fourth curved surfaces, wherein the accessory structure may attach and detach the at least one first and second magnets and the at least one third and fourth magnets by magnetic force, may rotate the first and second curved surfaces along the third and fourth curved surfaces, and may be bent during rotation so as to mount the first electronic device at various angles. Other various embodiments are also possible.

Electronic device comprising accessory

The present invention relates to a white light emitting device having high color rendering, and the white light emitting device is a white light emitting lamp comprising a blue LED chip having an excitation wavelength of 440-460 nm, and a phosphor layer covering a light emitting surface of the blue LED chip and excited by the excitation wavelength of the blue LED chip so as to emit light, wherein the phosphor layer comprises a first phosphor having an emission peak wavelength of 480-499 nm; a second phosphor having an emission peak wavelength of 500-560 nm; and a third phosphor having an emission peak wavelength of 600-650 nm. According to aspects of the present invention, a white LED chip having high color rendering can be provided, and particularly, the white light emitting device having high color rendering for specific colors such as R9 and R12 can be provided.

White light emitting device having high color rendering

Disclosed is a cover device for a portable electronic device that includes a cover unit that covers a screen of a display unit of the portable electronic device in such a manner that at least a portion of the screen remains exposed. When the portable electronic device is covered, the cover unit is connected with the portable electronic device such that information displayed on the screen of the display unit is displayed at a position corresponding to the at least a position of the screen that remains exposed.

Growing community of inventors

Gyeonggi-do, South Korea

Han Do Kim