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Ji Hoon Yoo

Ji Hoon Yoo, Bucheon-Si KR

Patent application numberDescriptionPublished
20100166948Transparent Conductive Layer and Preparation Method Thereof - The present invention relates to a method for producing a transparent conductive film in a form of complex multi-layer film comprising at least one layer using a silver complex compound having special structure and an organic acid metal salt. The method for producing the transparent conductive film, using one or more solution processes, comprises steps of (1) forming a transparent layer over a transparent substrate to improve transmittance; and (2) forming the conductive layer allowing conductivity, and further comprises a step of (3) forming a protective layer to prevent a change over time of the conductive layer. According to the present invention, it is possible to achieve large-scaled transparent conductive film having excellent conductivity and transmittance, as well as simple processes.07-01-2010
20100247422PROCESS FOR PREPARATION OF SILVER OXIDE - The present invention relates to a process for preparation of silver oxide with various shape and size using a silver complex compound having a special structure. The present invention includes 1) step of preparing a precursor solution including a silver complex compound obtained by reacting a silver compound with one or more mixture selected from the group consisting of an ammonium carbamate-based compound, an ammonium carbonate-based compound or an ammonium bicarbonate-based compound in the presence of a solvent; and 2) step of preparing silver oxide by reacting the precursor solution including the silver complex compound of step 1) with an oxidant. The shape and particle size of the silver oxide prepared according to the preparation process of the present invention can be changed.09-30-2010
20100252818PHOSPHAPHENANTHRENE COMPOUNDS AND ORGANIC LIGHT EMITTING DIODE USING THE SAME - The present invention relates to new phosphaphenanthrene compounds with excellent light emitting property and an organic light emitting diode (OLED) using the same.10-07-2010
20100270540Iridium Complex Containing Carbazole-Substituted Pyridine and Phenyl Derivatives as Main Ligand and Organic Light-Emitting Diodes Containing the Same - The present invention relates to a novel iridium complex into which carbazole-substituted pyridine derivatives and various substituents-substituted phenyl derivatives are introduced as main ligand and a electrophosphorescence diode containing the same as a dopant of a light-emitting layer. When the iridium complex according to the present invention is applied to an organic light-emitting diode, the heat-resistance property and the light-emitting property can be significantly improved as well as the light-emitting efficiency and the like can be significantly improved by doping the iridium complex compound into the light-emitting layer as compared to the conventional organic light-emitting diode.10-28-2010
20100289010ORGANIC ELECTROLUMINESCENT DEVICE AND PREPARATION METHOD THEREOF - The present invention relates to a method capable of considerably improving the characteristics of an organic electroluminescent device. The present invention provides a method capable of reducing operating voltage and improving efficiency by inserting an inorganic oxide interlayer configured of at least one layer between light-emitting layers.11-18-2010
20110003086Method for Fabricating Blackened Conductive Patterns - The present invention relates to a method for fabricating blackened conductive patterns, which includes (i) forming a resist layer on a non-conductive substrate; (ii) forming fine pattern grooves in the resist layer using a laser beam; (iii) forming a mixture layer containing a conductive material and a blackening material in the fine pattern grooves; and (iv) removing the resist layer remained on the non-conductive substrate.01-06-2011
20110024668Ink Composition for Optoelectronic Device - The present invention relates to an ink composition for printing capable of inking materials for an optoelectronic device and directly applying the inked materials to a patterning process. More particularly, the present invention relates to a printing ink composition for manufacturing an optoelectronic device capable of direct patterning by adjusting the physical property of a core material so as to be suitable for a printing method in the manufacturing of optoelectronic devices, for example, an organic electroluminescent device or an organic thin film transistor.02-03-2011

Ji Hoon Yoo, Gyeonggi-Do KR

Patent application numberDescriptionPublished
20110003153CONDUCTIVE FIBERS AND A METHOD OF MANUFACTURING THE SAME - The present invention relates to a method of manufacturing conductive fibers, more precisely a method of manufacturing conductive fibers comprising the steps of coating silver complex compound coating solution on non-conductive fibers to coat the fibers with silver complex compound; heating the fibers to form a silver coating layer; and forming an antioxidant layer thereon, and conductive fibers prepared by the same.01-06-2011
20110154948METHOD FOR MANUFACTURING METAL FLAKES - Disclosed herein is a method of manufacturing a metal flake, including the steps of: applying metal ink containing an organic metal compound onto a substrate; calcining the metal ink applied on the substrate to form a thin metal film; separating the formed thin metal film from the substrate; and pulverizing the separated thin metal film. The method of manufacturing a metal flake is characterized in that the thickness and size of metal flakes can be easily adjusted, metal flakes having excellent conductivity and gloss can be obtained, and metal flakes can be mass-produced using environmentally friendly and economical methods.06-30-2011