Anapass Inc.

Hyundai Motor Company

Kia Corporation

Lg Household & Health Care Ltd.

Hanmi Science Co., Ltd.

Hyun Seung Lee

Jun Young Jang

Joon Bae Park

Dong Joon Lee

Gwan Sun Lee

Sung Keun Lee

Byung Ki Ahn

Yong Sun Park

Dong Jun Kim

Tae Won Lim

Sang Yeoul Ahn

Young Kil Chang

Nam Du Kim

Jae Hyuk Jung

Ji Yeon Chang

Yong Uk Choi

Disclosed is a method and a device configured to control deterioration avoidance operation of a fuel cell system. In one aspect, the method may include starting the deterioration avoidance operation when an operation of a fuel cell is restarted in a state where an energy storage device is operating, and the fuel cell is stopped; controlling anode hydrogen pressure based on a predetermined condition, the condition indicating that the anode hydrogen pressure needs to be increased; determining hydrogen recirculation and supplying hydrogen including a process to determine whether to recirculate hydrogen based on a predetermined condition, the condition indicating that hydrogen needs to be recirculated, before supplying hydrogen; determining air recirculation and supplying air including a process to determine whether to recirculate air based on a predetermined condition, the condition indicating that air needs to be recirculated, before supplying air; and terminating the deterioration avoidance operation and starting operation of the fuel cell.

Method and device for controlling deterioration avoidance operation of fuel cell system

A display device for displaying an image, includes: a data line driver which includes a buffer configured to supply a reference voltage to a load including pixels and a boost circuit configured to supply a charging voltage to the load including the pixels; and a calibration unit which controls the boost circuit to supply the charging voltage to the load for a driving time and controls the driving time according to a difference between a target voltage and a voltage formed after charge sharing is performed in the load to which the charging voltage is supplied.

Display device and method of calibrating driving time of boost circuit

A method of calibrating a boost circuit includes: resetting a load to a reference voltage; supplying a charging voltage to the load through a boost circuit for a driving time such that charge sharing is performed in the load; comparing a voltage of the load after the charge sharing with a target voltage; and adjusting a duration of the driving time according to a result of the comparing.

Disclosed is a method for driving a display. The method includes calculating differences between digital codes corresponding to grayscale voltages each provided to pixels connected to the same data line and gate lines which are sequentially driven, summing digital code differences of a threshold value or more, generating a compensation code corresponding to the summation result, and providing grayscale voltages compensated with the compensation code to pixels of which digital codes have a difference of less than the threshold value.

Device and method for driving display

Disclosed herein is a method of detecting defects of a fuel cell membrane-electrode assembly which comprises a gas diffusion layer, a catalyst layer and an electrolyte membrane. The method includes steps of: supplying gas to a first side of the membrane-electrode assembly; deducing a pressure of the supplied gas and a permeation rate of the gas permeating to a second side of the membrane-electrode assembly and then deducing an interface pressure between the electrolyte membrane and the gas diffusion layer of the membrane-electrode assembly using the deduced pressure of the supplied gas and the permeation rate; calculating a gas permeability of the electrolyte membrane using the deduced values of the pressure of the supplied gas and the permeation rate and a predetermined outlet pressure at the second side of the membrane-electrode assembly; and determining a defect state of the electrolyte membrane using a variation in the calculated gas permeability according to a change in the pressure of the supplied gas.

Method and apparatus for detecting defects of fuel cell membrane-electrode assembly

Disclosed are a novel, simple and low-cost method for preparing sitagliptin of formula (I), as DPP-IV (dipeptidyl peptidase IV) inhibitor, which is useful in treating type 2 diabetes mellitus and key intermediates used in said preparation of sitagliptin: 

Method of preparing sitagliptin and intermediates used therein

The present invention relates to a pumping device of a fluid vessel that discharges a predetermined amount of contents, and more particularly, to a push button of a pumping device of a fluid vessel including a push panel having a push part capable of being pushed by applying force on an upper front surface; and a connection rod formed at a lower end of the push panel and including a pump pressing part pushed as the push part is pushed and a rotation part serving as a central axis of an operation of the pump pressing part as the push part is pushed, a distance between the push part and the rotation part being longer than that between the pump pressing part and the rotation part, and a pumping device of a fluid vessel using the same.

Growing community of inventors

Seoul, South Korea

Hyun Seung Lee