Samsung Electronics Co., Ltd.

University of Utah Research Foundation

Samsung Sdi Co., Inc.

Youngjae Park

Yoonhyun Kwak

Ohyun Kwon

Hyeonho Choi

Hyun Woo Koo

Kyuyoung Hwang

Sangdong Kim

Sunyoung Lee

Byoungki Choi

Seungyeon Kwak

Soyeon Kim

Jiyoun Lee

Whail Choi

Bumwoo Park

Zeev Valentine Vardeny

Dali Sun

Hyungjin Kim

Jinyong Choi

Jongwon Choi

Jungin Lee

Reum Oh

Banglin Lee

Junghoon Lee

Seokhwan Hong

Chuang Zhang

Jong-hyun Shin

Seungki Hong

Kyuhyun Im

Junghyun Lee

Kumhee Lee

Yoonsup Kim

Woongdai Kang

Taeho Lee

Jieun Ban

Dongyeon Park

Tek Prasad Basel

Zhiyong Pang

A method of operating a semiconductor memory device includes setting an operating mode of a mode register to a first operating mode to allow a refresh operation to be performed at intervals of a first period, counting an active command and a pre-charge command by control logic in the first operating mode to generate counting information, comparing a threshold count value with the counting information by the control logic to determine whether the counting information reaches the threshold count value, generating an adaptive mode signal by the control logic when it is determined that the counting information reaches the threshold count value and setting the operating mode of the mode register to a second operating mode in which the refresh operation is performed at intervals of a second period in response to the adaptive mode signal. The second period is less than the first period.

Semiconductor memory device and operating method thereof

An organometallic compound represented by Formula 1:M(L)(L)  Formula 1

Organometallic compound and organic light-emitting device including the same

In a method of operating a memory device, a first command to allow the memory device to enter an idle mode is received. A reference time interval is adjusted based on process, voltage and temperature (PVT) variation associated with the memory device. The reference time interval is used to determine a start time point of a power control operation for reducing power consumption of the memory device. A first time interval during which the idle mode is maintained is internally measured based on the first command. The power control operation is performed in response to the first time interval being longer than the reference time interval.

Method of operating memory device and memory device performing the same

An organometallic compound represented by Formula 1:

Organometallic compound, organic light-emitting device including the organometallic compound, and diagnosis composition including the organometallic compound

An organometallic compound represented by Formula 1:M(L)(L)&#x2003;&#x2003;Formula 1wherein in Formula 1, M, L, and Lare the same as described in the specificaiton.

A compressor control apparatus includes a rectifier configured to rectify AC power to DC power; an inverter including a plurality of switching elements, configured to convert the DC power into a three-phase voltage according to a pulse width modulation (PWM) signal applied to the plurality of switching elements; a motor configured to receive a three-phase current based on the three-phase voltage; a current detector configured to detect a sum of a first phase current, a second phase current, and a third phase current supplied to the motor; and a controller configured to differently determine a duty ratio of the PWM signal applied to each of the plurality of switching elements, and to determine the first phase current, the second phase current, and the third phase current, respectively, based on the determined duty ratio and the sum of the currents detected from the current detector.

Apparatus and method of controlling compressor, and air conditioner including the same

An organometallic compound represented by Formula 1: 

Organometallic compound, organic light-emitting device including the organometallic compound, and diagnosis composition incluidng the organometallic compound

An organometallic compound represented by Formula 1:M(L)(L)&#x2003;&#x2003;Formula 1

An organic light-emitting apparatus includes an organic light-emitting device and a magnetic field-applying member that applies a magnetic field to the organic light-emitting device. The organic light-emitting device includes a host and a dopant.

Organic light-emitting apparatus

An organic light-emitting device including a magnetoresistive element including a first magnetic layer, a second magnetic layer, and a separation layer disposed between the first magnetic layer and the second magnetic layer, an organic light-emitting element electrically connected to the magnetoresistive element, wherein the organic light-emitting element comprises a first electrode, a second electrode, and an organic light-emission layer disposed between the first electrode and the second electrode, a magnetic field applying unit configured to apply a magnetic field to at least the magnetoresistive element, and optionally, to the organic light-emitting element, a power source configured to supply a current between the magnetoresistive element and the organic light-emitting element, and a current source configured to apply a current between both terminals of the organic light-emitting element, wherein light-emission characteristics of the organic light-emitting device are changed depending on a direction and intensity of a current passing through the magnetoresistive element due to the power source and a direction and intensity of a current passing through the organic light-emitting element due to the power source and the current source.

Organic light-emitting device and method of operating the same

A carbazole compound represented by Formula 1 

Carbazole compound and organic light emitting device including the same

An organometallic compound represented by Formula 1:M(L)(L)(L)&#x2003;&#x2003;Formula 1

Growing community of inventors

Seoul, South Korea

Youngjae Park