Seon-Keun
Seon-Keun Park, Seoul KR
Patent application number | Description | Published |
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20160029760 | PROTECTING COVER - A protecting cover is provided. The protecting cover includes a first cover portion which is bendable and to which a first electronic device may be detachably coupled, a second cover portion which is bendably connected with the first cover portion and to which a second electronic device may be detachably coupled, and a third cover portion which is bendably connected with the first cover portion, in which the first cover portion, the second cover portion, and the third cover portion may be used as a cradle by being bent. | 02-04-2016 |
Seon-Keun Yoo, Chungcheongbuk-Do KR
Patent application number | Description | Published |
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20090104472 | RED PHOSPHORESCENT COMPOUNDS AND ORGANIC ELECTROLUMINESCENT DEVICES USING THE SAME - Provided are red phosphorescent compounds represented by Formula 1: | 04-23-2009 |
Seon-Keun Yoo, Jeungpyeong-Gun KR
Patent application number | Description | Published |
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20080203905 | Blue light emitting compound and organic electroluminescent device using the same - A blue light emitting compound and an organic electroluminescent device using the compound are provided. The device exhibits improved color purity of blue emission and excellent life characteristics so as to be used to manufacture a full-color display. | 08-28-2008 |
Seon-Keun Yoo, Gunpo-Si KR
Patent application number | Description | Published |
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20140124766 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - An organic light emitting display device includes first and second electrodes facing each other on a substrate, at least one emission layer formed between the first and second electrodes, a hole transport layer formed between the first electrode and the emission layer, and an electron transport layer formed between the second electrode and the emission layer, wherein the emission layer includes a first emission mixed layer formed on the hole transport layer, the first emission mixed layer including a first hole-type host and a first phosphorescent dopant, and a second emission mixed layer formed between the first emission mixed layer and the electron transport layer, the second emission mixed layer including a first electron-type host and a second phosphorescent dopant. | 05-08-2014 |
20150188066 | WHITE ORGANIC LIGHT EMITTING DEVICE - Discussed is a white organic light emitting device including an anode and a cathode opposite to each other, a plurality of stacks disposed between the anode and the cathode, each of the stacks including a hole transport layer, a light emitting layer and an electron transport layer, and a charge generation layer disposed between different stacks, the charge generation layer including a single organic host having an electron transport property, and an n-type dopant and a p-type dopant. | 07-02-2015 |