Korea Institute of Science and Technology

Samsung Electronics Co., Ltd.

Hyundai Motor Company

Kolon Industries, Inc.

Kia Corporation

Seoul National University

Amkor Technology, Inc.

Daewoong Pharmaceutical Co., Ltd.

In Ho Kim

Won Mok Kim

Kyeong Seok Lee

Taek Sung Lee

Seung Won Oh

Jeung Hyun Jeong

Doh Kwon Lee

Dae-Hwan Kang

Jeung-hyun Jeong

Byung-ki Cheong

Doo Seok Jeong

Gyu Weon Hwang

Yong Wan Lee

Sang Woo Kim

Dong Ju Moon

Hyun Chul Kim

Young Seok Oh

Wook Seong Lee

Moon Soo Chang

Woong Jeon Ahn

Han Geun Jang

Jong Keuk Park

Hee Sun Yun

Yoon Hee Jang

Ji Su Oh

Nae Chun Park

Choul Woo Jung

Ki Bum Kim

Dongjin Kim

Sang Cheol Shin

Tae-Yon Lee

Jae Yun Kim

Ki-bum Kim

Dong Ho Jang

Kyoung Ju Kim

Yong Seok Park

Seong Min Je

Jun Sik Kim

Do Woo Kim

Byung Ki Cheong

Ki Bong Kim

You Na Lee

Kyeong Sool Seong

Jae Man Cho

Hyeong Geun Yu

Tae Yun Kim

Hyeon Seung Lee

Duck Soo Lim

Hyoung Mo Yang

Kyung Yul Seo

Dong-Ho Ahn

Dong Ho Anh

Thi Kim Cuc Mai

Wan Soo Son

Jang Mi Lee

Seong Il Kim

Han Ju Jung

Sung Hun Yu

Byoung Kab Choi

Ji Young Oh

Na Hyun Ahn

Proposed are a gasket assembly and a fuel cell humidifier comprising the same which can be manufactured with improved productivity and can drastically reduce maintenance costs thereof. The gasket assembly according to an embodiment of the present disclosure is a gasket assembly for a fuel cell humidifier comprising a mid-casing, a cap fastened to the mid-casing, and at least one cartridge disposed in the mid-casing and receiving a plurality of hollow fiber membranes. The gasket assembly includes a packing part provided with a hole into which an end part of the cartridge is inserted, an edge part formed by being connected to the packing part, and a damping part formed on an outer peripheral surface of the cartridge.

Gasket assembly and fuel cell humidifier comprising same

A motor driving apparatus includes a first motor including first windings respectively corresponding to phases, a second motor including second windings respectively corresponding phases, a first inverter including first switching elements and connected to a first end of each of the first windings, a second inverter including second switching elements, a first changeover switch including third switching elements respectively connected to a second end of each of the first windings at one end and connected to each other at the other end, a second changeover switch including switches selectively connecting the second inverter with the second end of each of the first windings or the second inverter with a first end of each of the second windings, and a controller configured for controlling the states of the first switching elements, the second switching elements, the third switching elements and the switches based on preset conditions.

Motor driving apparatus and method

A cartridge of a fuel cell humidifier includes an inner case to be inserted into a middle case of the fuel cell humidifier for humidifying dry gas supplied from the outside using wet gas discharged from a fuel cell stack; a plurality of hollow-fiber membranes accommodated inside the inner case; a first potting part which is coupled to the inner case and which fixes one side of each of the hollow-fiber membranes; a second potting part which is coupled to the inner case and which fixes the other sides of the hollow-fiber membranes; and a link member for connecting the inner case to the middle case so that the middle case and the inner case are linked so as to move according to the pressure of the wet gas positioned inside the middle case.

Cartridge of fuel cell humidifier and fuel cell humidifier

The present invention relates to a humidifier for a fuel cell, the humidifier comprising: a humidifying module for humidifying a dry gas, supplied from the outside, by using a wet gas discharged from a fuel cell stack; and a first cap coupled to one end of the humidifying module. The humidifying module includes: a mid-case; and at least one cartridge disposed in the mid-case and accommodating a plurality of hollow fiber membranes. The humidifier for a fuel cell further includes a first packing member which is air-tightly coupled to at least one end of the humidifying module through mechanical assembly so that the first cap is in fluid communication with only the hollow fiber membranes.

Humidifier for fuel cell

Proposed is a motor drive apparatus driving first and second motors having first wirings and second wirings, respectively, including a first inverter including first switching elements, an alternating-current terminal of the first inverter being connected to a first terminal of each of the first wirings, a second inverter including second switching elements, a first change-over switch including third switching elements, first-side terminals thereof being connected to second terminals of the first wirings, respectively, and second-side terminals being connected, a second change-over switch including fourth switching elements, first-side terminals thereof being connected to the second terminals, respectively, and second-side terminals being connected to an alternating-current terminal of the second inverter, a third change-over switch including fifth switching elements, first-side terminals thereof being connected to the alternating-current terminal, and second-side terminals being connected to the second wirings, respectively, and a controller controlling turned-on and -off states of the first to fifth switching elements.

Hybrid electric vehicle and motor drive apparatus for same

The present disclosure relates to a syringe safety cap and a safety syringe including the same. One aspect of the present disclosure provides a syringe safety cap including a base portion having a mounting portion to be mounted on a cylinder of a syringe, a link portion rotatably connected to the base portion, a first elastic portion configured to provide a rotational force so that the link portion rotates with respect to the base portion, a safety cover portion rotatably connected to the link portion, detachably fixed to the base portion, and configured to, when detached from the base portion and rotating, surround an injection needle of the syringe, and a second elastic portion configured to provide a rotational force so that the safety cover portion rotates with respect to the link portion.

Syringe safety cap and safety syringe including the same

The present invention provides an optical device including a spectral filter and an optical detection unit for detecting light passing through the spectral filter. A band-limited filter is provided on the path of light.

Optical module and optical device using same

An integrated tandem solar cell includes a first solar cell including a rear electrode, a light absorption layer disposed on the rear electrode, and a buffer layer disposed on the light absorption layer; a recombination layer including a first transparent conductive layer disposed on the buffer layer; a nanoparticle layer that is transparent and conductive, that is disposed on the first transparent conductive layer, and that planarizes the first solar cell; and a second transparent conductive layer disposed on the nanoparticle layer; and a second solar cell that is a perovskite solar cell including a perovskite layer and that is disposed on and bonded to the second transparent conductive layer of the recombination layer. The recombination layer electrically joins the first and second solar cells and planarizes the first solar cell so that the second solar cell is uniformly deposited in all regions thereof.

Integrated tandem solar cell and manufacturing method thereof

An embodiment includes a method of texturing a semiconductor substrate, a semiconductor substrate manufactured using the method, and a solar cell including the semiconductor substrate, the method including: forming metal nanoparticles on a semiconductor substrate, primarily etching the semiconductor substrate, removing the metal nanoparticles, and secondarily etching the primarily etched semiconductor substrate to form nanostructures.

Method of texturing semiconductor substrate, semiconductor substrate manufactured using the method, and solar cell including the semiconductor substrate

A monolithic solar cell includes a first solar cell that is a sequential stack of an electrode, a silicon substrate, and an n-type emitter layer; a recombination layer disposed on the n-type emitter layer; an interfacial layer that is a double layer constituted of PEDOT:PSS and poly-TPD or PEDOT:PSS and PCDTBT, and that is disposed on the recombination layer; and a second solar cell that includes a p-type hole selective layer and a perovskite layer disposed on the p-type hole selective layer, the a p-type hole selective layer contacting and being integrated onto the interfacial layer of the first solar cell in a heat treatment during which the interfacial layer is partially decomposed, wherein the presence of the interfacial layer prevents a reduction in photoelectric conversion efficiency that occurs if the first solar cell and the second solar cell are combined without the presence of the interfacial layer.

Monolithic solar cell

Provided is a multi-junction solar cell in which two or more absorption layers having different bandgaps are stacked on one another. The multi-junction solar cell includes a first cell including a first absorption layer, and a second cell electrically connected in series onto the first cell, wherein the second cell includes a second absorption layer having a higher bandgap compared to the first absorption layer, and a plurality of recesses penetrating through the second absorption layer.

Multi-junction solar cell and manufacturing method of the same

An electronic device is provided. The electronic device includes a communication module, a memory configured to store payment information registered in a payment application, and a processor. The processor is configured to select at least one of a plurality of authentication servers based on the payment information, receive authentication information from the at least one authentication server by using the communication module, select at least one payment information of the payment information registered in the payment application based on a user input, select first authentication information, which corresponds to the selected payment information, from among the authentication information, and send second authentication information, which is generated based on the selected first authentication information, to the at least one authentication server corresponding to the selected first authentication information.

Electronic device and user authentication method thereof

An electronic device and a method of payment by the electronic device are provided. The electronic device includes a local wireless communication circuit, a first biometric sensor and a second biometric sensor, a security module configured to store payment information corresponding to a payment card, a processor electrically connected to the first biometric sensor, the second biometric sensor, the local wireless communication circuit, and the security module, and a memory electrically connected to the processor, wherein the memory is configured to store instructions that cause the processor to select at least one of the first biometric sensor or the second biometric sensor, based on a security policy of an issuer of the payment card or a security policy of the payment card, authenticate a user by using the selected biometric sensor, and if the authentication is successful, transmit the payment information to an external device through the local wireless communication circuit.

Method and electronic device for paymnet using biometric authentication

A method for preparing a film of a CIS semiconductor compound overcoated by a color layer includes preparing an electrolyte solution by mixing precursors of film constituents including Cu, In, and Se with a solvent; configuring an electrodeposition circuit by connecting an electrochemical cell comprising the electrolyte solution, a working electrode, and a counter electrode to a voltage or current supply device; disposing a photomask having the predetermined pattern on the working electrode; producing the film through the photomask on a surface of the working electrode by applying a reduction voltage or current; disposing a light source to emit light toward the photomask; and photoelectrically depositing the film on the surface of the working electrode at least in the predetermined pattern while illuminating light through the photomask; and forming a color layer of CuSe at least in the predetermined pattern on the film employed as a working electrode using photo-electrodeposition.

Method for preparing a compound-based film for use in a solar cell by photo-electrodeposition

Growing community of inventors

Seoul, South Korea

In Ho Kim