DAE JOO ELECTRONIC MATERIALS CO., LTD. Patent applications |
Patent application number | Title | Published |
20140299849 | NAPHTHALENE DERIVATIVE, ORGANIC MATERIAL INCLUDING THE SAME, AND ORGANIC ELECTROLUMINESCENT DEVICE INCLUDING THE SAME - The present invention provides a compound represented by the following formula 1. The compound of the present invention has high luminance, high luminous efficiency, excellent color purity and excellent high-temperature stability, and thus can provide a material for an organic electroluminescent device and an organic electroluminescent device having a long lifetime. | 10-09-2014 |
20120187339 | OXYNITRIDE PHOSPHOR POWDER, NITRIDE PHOSPHOR POWDER, AND A PRODUCTION METHOD THEREFOR - The present disclosure relates to a producing method for oxynitride or nitride phosphor powders which can be used in displays such as vacuum fluorescent display (VFD), field emission display (FED) and LED display devices, or in lighting devices such as cold cathode fluorescent lamps (CCFL) and LED lamps, or in light-emitting apparatuses such as back-lights, wherein the producing method for phosphor powders comprises the step of subjecting part or all of a metal oxide to nitriding by calcining in an atmosphere containing nitrogen, using a fine carbon substance. | 07-26-2012 |