Glbtech Co., Ltd.

Samsung Electronics Co., Ltd.

Korea Institute of Civil Engineering and Building Technology

Byung Soon Kim

Han Do Kim

Yong Sun Choi

Eun Mi Park

Guen Ryeol Park

Sung Su Kim

Sung Yong Park

Seung H Yoo

Gum Sung Ryu

Kyung Taek Koh

Gi Hong An

Jin Gyu Choi

Young Gwon Koo

Young Sik Choi

Joong Sam Yun

Tae Yong Kim

Myoung Ji Nam

Seung Woon Lee

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

An electronic device according to various embodiments of the present invention may comprise: a body portion comprising a first surface facing in a first direction, a second surface facing in a second direction that is opposite to the first direction, and a seating groove arranged in an inner peripheral area thereof in the longitudinal direction; a display portion rotatably coupled to the body portion; and a connector module arranged in the seating groove of the body portion so as to provide electric coupling between the body portion and the display portion, at least a part of the connector module being configured to rotate. The connector module may comprise: a support portion fixed/coupled inside the seating groove, the support portion comprising an opening arranged therein; a link portion rotatably coupled to the support portion, the center area of the link portion being open so as to correspond to the opening of the support portion; at least one elastic member arranged between the support portion and the link portion so as to provide elastic restoration power caused by rotation of the link portion; and at least one cable connected from the body portion to the display portion through the opening of the link portion, the cable being folded or unfolded by rotation of the link portion.

Connector module and electronic device comprising same

A method of batch-casting high-fluidity high performance concrete and low-fluidity high performance concrete, wherein the method is capable of batch-casting high-fluidity high performance concrete for forming a girder portion of a bridge and low-fluidity high performance concrete for forming a deck plate portion of the bridge by using a concrete casting apparatus. Accordingly, the construction cost can be reduced and the construction period can be shortened. In addition, because a cold joint does not occur, durability can be improved, and thus the life of the bridge can be increased.

Method for batch casting high-fluidity high-performance concrete and low-fluidity high-performance concrete

Disclosed are a portable terminal with a music performance function and a method for playing a variety of musical instruments. The method includes: selecting a particular piece of music and a particular musical instrument from the portable terminal, according to a user request, and executing a music performance mode corresponding to the selected musical instrument; detecting a first input signal input to a screen according to the selected musical instrument in the musical performance mode; determining, if the first input signal is detected, whether a second input signal for executing audio source data is detected; analyzing the first and second input signals, in association with each other; and outputting audio source data of the selected music, according to the analyzed result, via audio signals.

Portable terminal with music performance function and method for playing musical instruments using portable terminal

Growing community of inventors

Seongnam-si, South Korea

Byung Soon Kim