Samsung Electro-Mechanics Co., Ltd.

Solum Co., Ltd.

Heung Gyoon Choi

Young Min Lee

Jae Gen Eom

Tae Won Heo

Sang Gab Park

Jong Woo Kim

Sung Woo Han

Geun Young Park

Young Seung Noh

Seh Hoon Jang

Nak Jun Jeong

Sung Ho Kim

Sang Kyoo Han

Nam Jin Park

Byoung Woo Ryu

Sung Soo Hong

Chung Wook Roh

Geun Chui Park

Tae Hyung Kang

Han Hee Lee

Hyo Joong An

Ki Hong Kim

Young Seung Roh

Min Jin Kim

Se Hoon Jang

Tae Shik Kim

Kyu Min Park

Xin Lan Li

Jae Sun Won

Sang Hwan Cho

Sang Ho Cho

Jong Hae Kim

Sang Joon Seo

Choong Sik Yoo

Junkyu Lee

Hwi Beom Shin

Kwang Seung Cho

Hong Sun Park

Dae Hoon Choi

Gyu Min Park

Jin Woo Cho

Moo Jong Kang

Keun Wook Lee

Kyu Tae Seo

Kyu Suk Han

Yun Ki Kang

Su Hun Jo

Changyong Kwon

Dongkyun Ryu

Sang Hyun Lee

A planar transformer is disclosed. The disclosed planar transformer includes: a magnetic core; a first coil unit formed in a conductor pattern in a plurality of layers stacked in the magnetic core; a second coil unit formed in a conductor pattern in the plurality of layers stacked in the magnetic core; an electromagnetic interference (EMI) reduction unit disposed on the output end of the second coil unit; and a base for accommodating the magnetic core and the coil units.

Planar transformer including y-capacitor

A transformer includes a magnetic core, a first coil unit and a second coil unit. The first coil unit is disposed within the magnetic core and includes a laminated board having layers laminated therein and conductive patterns. Respective ones of the conductive patterns are disposed on the laminated layers. The second coil unit includes a conductive wire spaced apart from the conductive patterns of the laminated board by an insulating distance. The conductive wire includes a triple-insulated wire surrounded by three sheets of insulating paper to maintain the insulating distance from the conductive patterns.

Transformer and power supply device including the same

A non-contact type power transmitting apparatus may include a rectifying unit rectifying alternating current (AC) power, a power converting unit converting the power rectified by the rectifying unit into direct current (DC) power through a single power converting operation and switching and transmitting the DC power, and a power transmitting coil transmitting transmission power transmitted from the power converting unit externally in a non-contact scheme.

Non-contact type power transmitting apparatus, non-contact type power transmitting-receiving apparatus, contact/non-contact type power transmitting apparatus, and contact/non-contact type power transmitting-receiving apparatus

A coil component includes a first coil part including a multilayer substrate on which a conductor pattern is formed, a second coil part formed as a wire and stacked together with the first coil part, a core coupled to the first and second coil parts while penetrating through the first and second coil parts to thereby be electromagnetically coupled to the first and second coil parts, and a pressing member interposed between the core and the second coil part to allow the first and second coil parts to closely adhere to each other.

Coil component and power supply apparatus including the same

There is provided a voltage control circuit that is applicable to a LED device, a power supply or the like. The voltage control circuit includes: a voltage dividing unit dividing a supply voltage into a first voltage and a second voltage different from each other; a shunt regulator adjusting the first voltage according to the second voltage; and an output circuit unit outputting the voltage regulated by the shunt regulator.

Voltage control circuit with temperature compensation function

There is provided a single stage forward-flyback converter including a power converting unit switching input power to perform a forward power conversion operation while being switched on and perform a flyback power conversion operation while being switched off, a path providing unit clamping power formed by the forward power conversion operation of the power converting unit and power formed by the flyback power conversion operation thereof to provide power transfer paths, and a controlling unit controlling the power conversion operation of the power converting unit according to a voltage level of the input power.

Single stage forward-flyback converter and power supply apparatus for light emitting diode

There are provided a dimming control apparatus, a lighting system driving apparatus, and a dimming control method, the dimming control apparatus including a voltage converting unit converting a dimming signal from a dimmer into dimming voltage, an analog-to-digital (A/D) converting unit converting the dimming voltage into a digital dimming value, a dimming setting unit determining whether or not the digital dimming value is included in a preset dimming value range, and when the digital dimming value is not included in the preset dimming value range, resetting the dimming value range so as to allow the digital dimming value to be included in the reset dimming value range, a memory unit storing a dimming control value corresponding to the digital dimming value, and a dimming control unit generating a dimming control signal based on the dimming control value corresponding to the digital dimming value from the A/D converting unit.

Dimming control apparatus, light system driving apparatus and dimming control method

There are provided a power module and a display device. There is provided the power module for a display device that includes a panel, a backlight unit supporting the panel and including a light source, and a conductive back cover coupled to the backlight unit, the power module including: a circuit board supplying power to the light source included in the backlight unit; a transformer mounted on the circuit board and supplying power to the circuit board; and a shielding plate mounted on the circuit board and covering, in a non-contact manner, the upper surface of the transformer opposed to the lower surfaceof the transformer facing the surface of the circuit board. There is provided a display device including such a power module.

Power module and display device

There is provided a multi power supply apparatus for driving light emitting diodes that is synchronized with a frequency of one output power of multi output power to control a switching of the multi output power and simplifies power conversion in supplying power for driving light emitting diodes. The multi power supply apparatus for driving light emitting diodes includes a power converter that converts an input power into a first power according to a preset first conversion scheme and converts the input power into a second power according to a second conversion scheme set to be different from the first conversion scheme; first and second drivers that receive the first power and the second power from the power converter to drive light emitting diodes; a feedback unit that feedbacks detection signal from the first and second LED drivers; and a power conversion controller that controls a power conversion switching frequency of the first power of the power converter according to the detection signal from the feedback unit and is synchronized with the power conversion switching frequency to control a duty of the second power of the converter.

Multi power supply apparatus for driving light emitting diodes

There are provided a DC/DC converter and a driving apparatus having the same. The DC/DC converter includes a DC/DC converter part converting an input power into a predetermined DC power by switching the input power to thereby supply the converted DC power to a light emitting device; and a control part controlling switching of the DC/DC converter part in accordance with a driving signal applied to the light emitting device to thereby control a voltage level of the DC power.

DC/DC converter and driving apparatus having the same

Growing community of inventors

Suwon-si, South Korea

Heung Gyoon Choi