Lg Chem, Ltd

Lg Display Co., Ltd.

Lg Philips Lcd Co., Inc.

Lg Chemical Ltd.

Lg Petrochemical Co., Ltd.

Won-Ho Lee

Ki-Bok Park

Jong-Hyun Chae

Seung-Chul Lee

Min-ho Kil

Hyuk Joo Kim

Sang-Hyun Lee

Yun-Bok Lee

Dong-Hyun Ko

Gyo-Hyun Hwang

Young-Chang Byun

Sang-mun Jeong

Hyun-Kyung Yoon

Jung-Hwa Kang

Kyung-Hwa Kang

Jun-Han Kang

Byung-Yul Choi

Seong-Ho Choi

Go-Young Moon

Hyun-Kuk Noh

Min-suk Kim

Chang-Song Lee

Seong-Uk Jeong

Dong-Il Lee

Tae-Geun Noh

Min-Ho Kil

Young-Jin Cho

Sang-hyun Lee

Youn-Gyoung Chang

Tae-Han Kim

Sang-Ho Choi

Sang-Min Jang

Gi-Hong Kim

Seong-Hoon Yue

Jong-Hun Song

Ju-Un Park

Hyun-Jong Shin

Yeon-Shick Yoo

Jong-Won Moon

Sang-Ho Shin

Hwang-chan Yoo

Ju-Yeon Park

Sang-Heup Moon

Young-Hyun Choe

Ju-yeon Park

Duk-ki Kim

Young-hyun Choe

Sung-chul Lim

Jun-han Kang

Sang-ku Park

Young-Il Choi

Joon-Dong Lee

Seong-Min Song

Ha-Chull Chung

Kyoung-Il Park

Bu-Young Jo

Igor N Filimonov

Dong-il Lee

Sang-Mun Jeong

Keun-Hoo Park

Hyun-jong Shin

In-Su Park

Jong-Ho Choi

Sang-Ku Park

Jin-Nam Park

Yung-Eun Sung

Woo-Hyun Nam

A fuel cell is operated with high power such that which a humidified gas and a dry gas are selectively supplied as oxidant to a cathode of the fuel cell. This method includes (S) supplying a humidified gas while a power is constantly maintained or until the power begins to decrease; (S) after supplying the humidified gas, supplying a dry gas to obtain a greater power than an average power of the step (S); and (S) after obtaining a predetermined power in the step (S), repeatedly supplying a humidified gas in case the power decreases and supplying a dry gas in case the power decreases again afterwards, thereby increasing the power such that the predetermined power is maintained. This method provides an optimal operating condition to a fuel cell, thereby ensuring a high power.

Method of operating fuel cell with high power and high power fuel cell system

Discussed are a transparent display device and a manufacturing method thereof, which may reduce diffraction grating. The transparent display device includes gate lines and data lines formed on a substrate and crossing each other with a gate insulator film interposed therebetween to define pixel areas, common lines formed on the substrate and being parallel to the gate lines, thin film transistors formed in the respective pixel areas, pixel electrodes connected to the thin film transistors, and common electrodes connected to the common lines and alternating with the pixel electrodes. In the transparent display device, blocks between the pixel electrodes and the common electrodes are reduced or increased in width by an equal difference with increasing distance from both edges of each pixel area proximate to the data lines or by an equal difference with decreasing distance to the center of the pixel area.

Transparent display device and manufacturing method thereof

A cathode for a fuel cell includes a gas diffusion layer contacting with a separator having a channel and a catalyst layer interposed between the gas diffusion layer and an electrolyte membrane. The catalyst layer of the cathode has two portions with different water-repelling properties, and a portion of the catalyst layer that does not face a channel has a higher water-repelling property than a portion that faces a channel. This cathode controls a water-repelling property of the catalyst layer differently according to locations, so it is possible to keep an amount of moisture in an electrode in a suitable way and to restrain generation of flooding, thereby improving the performance of the cell.

Method of preparing cathode for fuel having two kinds of water-repellency

A fuel cell is operated with high power such that which a humidified gas and a dry gas are selectively supplied as oxidant to a cathode of the fuel cell. This method includes (S1) supplying a humidified gas while a power is constantly maintained or until the power begins to decrease; (S2) after supplying the humidified gas, supplying a dry gas to obtain a greater power than an average power of the step (S1); and (S3) after obtaining a predetermined power in the step (S2), repeatedly supplying a humidified gas in case the power decreases and supplying a dry gas in case the power decreases again afterwards, thereby increasing the power such that the predetermined power is maintained. This method provides an optimal operating condition to a fuel cell, thereby ensuring a high power.

Disclosed are a multi-block copolymer, its producing method and an electrolyte membrane using the same. The multi-block copolymer includes a hydrophobic block having a plurality of repeating units represented as chemical formula 1; and a hydrophilic block having a plurality of repeating units represented as chemical formula 2. The multi-block copolymer is acidified, and can be used to an electrolyte membrane and a fuel cell. The use of the multi-block copolymer as an electrolyte membrane ensures excellent dimensional stability.

Polymer electrolyte membrane

Provided are an ion conductive resin fiber, an ion conductive hybrid membrane, a membrane electrode assembly and a fuel cell. The ion conductive resin fiber comprises an inner layer including an ion conductive resin; and an outer layer including an ion conductive resin having larger EW than the ion conductive resin of the inner layer, and surrounding the inner layer. The ion conductive resin fiber and the ion conductive hybrid membrane are excellent in ion conductivity, polar solvent stability and dimensional stability under low humidity conditions. The fuel cell manufactured using the same has advantages of stable operation and management of a system at ease, removal or reduction of components related to water management, and even in case of low relative humidity, operation at high temperature of 80&#xb0; C. or higher.

Ion conductive resin fiber, ion conductive hybrid membrane, membrane electrode assembly and fuel cell

A cathode for a fuel cell includes a gas diffusion layer contacting with a separator having a channel and a catalyst layer interposed between the gas diffusion layer and an electrolyte membrane. The catalyst layer of the cathode has two portions with different water-repelling properties, and a portion of the catalyst layer that does not face a channel has a higher water-repelling property than a portion that faces a channel. This cathode controls water-repelling property of the catalyst layer differently according to locations, so it is possible to keep an amount of moisture in an electrode in a suitable way and to restrain generation of flooding, thereby improving the performance of the cell.

Cathode for fuel cell

An array substrate for an in-plane switching mode liquid crystal display device includes a gate line on a substrate including a pixel region, the pixel region including a first domain at a lower side with respect to the gate line and a second domain at an upper side with respect to the gate line; a data line crossing the gate line; a thin film transistor in the pixel region and at a crossing portion of the gate and data lines; a plurality of first pixel electrodes in the first domain; a plurality of second pixel electrodes in the second domain, the plurality of first pixel electrodes and plurality of second pixel electrodes sharing the thin film transistor; a plurality of first common electrodes in the first domain and alternately arranged with the plurality of first pixel electrodes; and a plurality of second common electrodes in the second domain and alternately arranged with the plurality of second pixel electrodes.

Array substrate for in-plane switching mode liquid crystal display device

An array substrate for a transflective liquid crystal display device comprising a common electrode over a third passivation layer substantially all over a substrate, the common electrode having first openings and second openings corresponding to a transmissive area and a reflective area, respectively, wherein the first openings are spaced apart from each other and are parallel to a data line, and the second openings are spaced apart from each other and are slant at a predetermined angle with respect to the data line, wherein first ends of the first openings overlap a second gate line, second ends of the first openings overlap the common line, first ends of the second openings overlap the common line, and second ends of the second openings overlap a first gate line.

Array substrate for transflective liquid crystal display device and method of fabricating the same

An in-plane switching mode transflective liquid crystal display device includes: first and second substrates; a gate line and a data line on an inner surface of the first substrate, the gate line and the data line crossing each other to define a pixel region; a common line parallel to the gate line; a thin film transistor connected to the gate and data lines; a first passivation layer over the thin film transistor; a reflecting layer over the first passivation layer; a second passivation layer over the reflecting layer; a pixel electrode over the second passivation layer; a third passivation layer over the pixel electrode; a common electrode over the third passivation layer, the common electrode connected to the common line, the common electrode including a plurality of first openings along a first direction in the transmissive area and a plurality of second openings along a second direction different from the first direction in the reflective area; a color filter layer on an inner surface of the second substrate; and a liquid crystal layer between the first and second substrate.

In-plane switching mode transflective liquid crystal display device and method of fabricating the same

A liquid crystal display device includes a gate line and a data line crossing each other to define a pixel region on a substrate; a thin film transistor connected to the gate and data lines; a pixel electrode in the pixel region and including a first pixel portion which has a plurality of bent portions and first and second pixel protrusion portions protruding from the bent portions alternately in an opposing direction; and a common electrode in the pixel region and including first and second common portions between which the first pixel portion is located, and first and second common protrusion portions protruding from the first and second common portions, respectively, alternately in a direction toward the bent portions.

Liquid crystal display device and method of fabricating the same

The present invention relates to a method of preparing a heteropoly acid catalyst used for the production of methacrylic acid by gas phase oxidation of methacrolein, more precisely a method of preparing a heteropoly acid catalyst comprising the steps of preparing a slurry by adding metal precursors and ammonium salt to protonic acid Keggin-type heteropoly acid aqueous solution and stirring thereof; and drying, molding and firing the slurry to give a catalyst. The present invention provides a method of preparing a heteropoly acid catalyst exhibiting high methacrolein conversion rate and methacrylic acid selectivity without pre-firing process by using high purity protonic acid Keggin-type heteropoly acid and ammonium salt.

Method of preparing heteropoly acid catalyst

The present invention relates to a heteropoly acid catalyst which is used for the production of methacrylic acid by gas phase oxidation of methacrolein and a preparing method thereof. The present invention, thereby, provides a novel heteropoly acid catalyst having excellent methacrolein conversion rate, methacrylic acid selectivity and yield.

Heteropoly acid catalyst and method of preparing the same

The present invention relates to a fireproof door, which comprises a fire-protection glass and a support means for supporting the fire-protection glass, and the support means comprising an elastic member in contact with both surfaces of an edge portion of the fire-protection glass, a reinforcing frame for supporting the elastic member, and a fixing plate fixed to a support and corresponding to both surfaces of the reinforcing frame. The fireproof door of the present invention has a grade A fireproof performance.

Fireproof door

Growing community of inventors

Daejeon, South Korea

Won-Ho Lee