Electronics and Telecommunications Research Institute

Other

Lg Chem, Ltd

New Technology Bank Co., Ltd.

Ji Seon Kim

Yoon Ho Song

Jin Woo Jeong

Jun Tae Kang

Dong Il Kim

Kyung Hwan Kim

Gi Dae Choi

Sang Wook Na

Ho Dong Kim

Mi Ah Lee

Tae Su Lee

A safe lighting system using wall mounted lift comprises a polygonal pipe cylinder installing at a building wall; a polygonal lifting unit moving up and down along the inner wall of the polygonal pipe cylinder; a wire adjusting the height of the polygonal lifting unit, wherein the wire is connected to the upper side of the polygonal lifting unit; a lifting control unit controlling the height of the polygonal lifting unit by winding or releasing the wire; and a lighting apparatus installed at the polygonal lifting unit, wherein the height of the lighting apparatus is adjusted by the lifting control unit, and the installation and the maintenance of the lighting apparatus can be done conveniently on the ground by lowering the lighting apparatus.

Safe lighting system using wall mounted lift

Disclosed are a thermoplastic polyester elastomer resin composition and a molded article comprising the same. More specifically, disclosed is a thermoplastic polyester elastomer resin composition which comprises a glycidyl group-modified ethylene-octene based copolymer resin, as a chain extension/hydrolysis resistance agent for blow and extrusion molding to improve melt viscosity, and increases a molecular weight through reaction extrusion and thus exhibits superior heat resistance, weather resistance, heat aging resistance, hydrolysis resistance, fatigue resistance properties, melt viscosity and parison stability, and in particular, exhibits superior blow molding, contains no gel, reduces production of odor-causing substances such as volatile organic compounds (TVOC) during blow molding, and maintains a balance between physical properties, moldability and operation environments.

Thermoplastic polyester elastomer resin composition and molding article comprising the same

Provided is a field emission device having a simple structure and capable of pulse driving and local dimming. The field emission device turns a current flowing from each cathode electrode block on or off in response to a switching control signal having a very low voltage ranging from 0 to 5 V while a constant voltage is applied to an anode electrode and a gate electrode to control a field emission current. Compared with a conventional field emission device, the field emission device having a simple structure is capable of pulse driving and local dimming without using a separate pulse driving high voltage power source.

Field emission device

A field emission device having a simple structure and capable of readily changing emission colors of light by adjusting emission intensity of red, green and blue light is provided. In the field emission device, current that flows into each cathode electrode block is adjusted according to a very low control pulse signal of 0 to 5 V with a predetermined voltage applied to an anode electrode and a gate electrode over time, so that emission intensities of red, green and blue are individually adjusted. Therefore, the current that flows into each cathode electrode block is adjusted in a simple manner using a control pulse signal of a low level without a separate pulse driving high-voltage power supply, so that emission intensities of red, green and blue can be arbitrarily adjusted and emission colors of the field emission device can be readily changed.

Color variable field emission device

Growing community of inventors

Daejeon, South Korea

Ji Seon Kim