Patents by Inventor Choon-Woo Lim
Choon-Woo Lim has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9150783Abstract: Organic light emitting diodes (OLEds) are provided. In one embodiment, an OLED includes a first electrode, a second electrode and an organic layer positioned between the first and second electrodes. The organic layer comprises an organic metal complex represented by the formula [M(L)2]a, in which L is an anionic ligand, M is a metal that can be five-coordinated or six-coordinated with L, and a is an integer ranging from 2 to 4.Type: GrantFiled: April 13, 2007Date of Patent: October 6, 2015Assignee: Samsung Display Co., Ltd.Inventors: Kyung-Hoon Choi, Kwan-Hee Lee, Min-Seung Chun, Choon-Woo Lim
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Patent number: 8999524Abstract: An organic light-emitting device includes a first electrode, a mixed organic layer, an emission layer, an electron transport layer, and a second electrode. The mixed organic layer contains a fluorene derivative and a pyrazine derivative, and the electron transport layer contains a lithium quinolate and a pyridine derivative.Type: GrantFiled: April 29, 2011Date of Patent: April 7, 2015Assignee: Samsung Display Co., Ltd.Inventors: Dong-Heon Kim, Tae-Shick Kim, Kwan-Hee Lee, Min-Seung Chun, Jung-Ha Son, Jae-Hyun Kwak, Mi-Kyung Kim, Choon-Woo Lim
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Patent number: 8911884Abstract: An organic light emitting device includes a substrate; a first electrode; a second electrode; and an organic layer including an emission layer between the first electrode and the second electrode. The organic layer includes a first intermediate layer including a first host and a first dopant, a second intermediate layer including the first dopant, and a third intermediate layer including a second host and the first dopant interposed between the first electrode and the emission layer. The organic light emitting device has a long lifetime.Type: GrantFiled: February 18, 2009Date of Patent: December 16, 2014Assignee: Samsung Display Co., Ltd.Inventors: Choon-Woo Lim, Kwan-Hee Lee, Kyung-Hoon Choi, Dong-Hun Kim
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Patent number: 8835019Abstract: Organic light emitting devices including an electron transport-emission layer, and methods of preparing the same are included. The electron transport-emission layer may be an electron transport-red emission layer, an electron transport-green emission layer or an electron transport-blue emission layer. The methods produce high yields of the organic light emitting devices and are less expensive than conventional methods.Type: GrantFiled: May 16, 2008Date of Patent: September 16, 2014Assignee: Samsung Display Co., Ltd.Inventors: Kyung-Hoon Choi, Kwan-Hee Lee, Min-Seung Chun, Choon-Woo Lim
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Organic light-emitting diode including electron transport layer and method of manufacturing the same
Patent number: 8664643Abstract: An OLED including an electron transport layer having multi-layered structure and a method of manufacturing the same, the method including simultaneously reciprocating first and second deposition sources that include different deposition materials, across a substrate.Type: GrantFiled: October 13, 2010Date of Patent: March 4, 2014Assignee: Samsung Display Co., Ltd.Inventors: Eun-Jung Lee, Choon-Woo Lim -
Patent number: 8466458Abstract: An organic light-emitting device including a mixed organic layer that includes a triphenyl amine derivative and a pyrazine derivative and an emission layer that includes an anthracene derivative, an amine-containing styryl derivative, or any mixture thereof.Type: GrantFiled: November 15, 2010Date of Patent: June 18, 2013Assignee: Samsung Display Co., Ltd.Inventors: Tae-Shick Kim, Dong-Heon Kim, Kwan-Hee Lee, Choon-Woo Lim, Jae-Hyun Kwak, Jung-Ha Son, Min-Seung Chun, Young-Ho Park, Kyung-Hoon Choi, Mi-Kyung Kim
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Patent number: 8192849Abstract: An organic light emitting display device that can reach the optimum light emitting efficiency of each pixel while operating at a low voltage. The organic light emitting display device includes a first pixel region emitting a first color, a second pixel region emitting a second color different from the first color, a first layer formed over the first and second pixel regions, and having at least one of a hole injection layer and a hole transport layer, and a second layer formed over the first and second pixel regions, and having hole injectivity higher than the first layer, wherein the first and second layers are sequentially deposited in the first pixel region, and the second and first layers are sequentially deposited in the second pixel region.Type: GrantFiled: January 27, 2009Date of Patent: June 5, 2012Assignee: Samsung Mobile Display Co., Ltd.Inventors: Choon-Woo Lim, Kwan-Hee Lee, Sung-Jun Bae, Sang-Shin Lee, Ji-Hwan Yoon, Eun-Jung Lee
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Publication number: 20110266531Abstract: An organic light-emitting device includes a first electrode, a mixed organic layer, an emission layer, an electron transport layer, and a second electrode. The mixed organic layer contains a fluorene derivative and a pyrazine derivative, and the electron transport layer contains a lithium quinolate and a pyridine derivative.Type: ApplicationFiled: April 29, 2011Publication date: November 3, 2011Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.Inventors: Dong-Heon KIM, Tae-Shick KIM, Kwan-Hee LEE, Min-Seung CHUN, Jung-Ha SON, Jae-Hyun KWAK, Mi-Kyung KIM, Choon-Woo LIM
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Publication number: 20110114930Abstract: An organic light-emitting device including a mixed organic layer that includes a triphenyl amine derivative and a pyrazine derivative and an emission layer that includes an anthracene derivative, an amine-containing styryl derivative, or any mixture thereof.Type: ApplicationFiled: November 15, 2010Publication date: May 19, 2011Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.,Inventors: Tae-Shick Kim, Dong-Heon Kim, Kwan-Hee Lee, Choon-Woo Lim, Jae-Hyun Kwak, Jung-Ha Son, Min-Seung Chun, Young-Ho Park, Kyung-Hoon Choi, Mi-Kyung Kim
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Publication number: 20110084259Abstract: An OLED including an electron transport layer having multi-layered structure and a method of manufacturing the same, the method including simultaneously reciprocating first and second deposition sources that include different deposition materials, across a substrate.Type: ApplicationFiled: October 13, 2010Publication date: April 14, 2011Applicant: Samsung Mobile Display Co., Ltd.Inventors: Eun-Jung Lee, Choon-Woo Lim
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Publication number: 20090315452Abstract: An organic light emitting display device that can reach the optimum light emitting efficiency of each pixel while operating at a low voltage. The organic light emitting display device includes a first pixel region emitting a first color, a second pixel region emitting a second color different from the first color, a first layer formed over the first and second pixel regions, and having at least one of a hole injection layer and a hole transport layer, and a second layer formed over the first and second pixel regions, and having hole injectivity higher than the first layer, wherein the first and second layers are sequentially deposited in the first pixel region, and the second and first layers are sequentially deposited in the second pixel region.Type: ApplicationFiled: January 27, 2009Publication date: December 24, 2009Applicant: Samsung Mobile Display Co., Ltd.Inventors: Choon-Woo LIM, Kwan-Hee Lee, Sung-Jun Bae, Sang-Shin Lee, Ji-Hwan Yoon, Eun-Jung Lee
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Publication number: 20090206744Abstract: An organic light emitting device includes a substrate; a first electrode; a second electrode; and an organic layer including an emission layer between the first electrode and the second electrode. The organic layer includes a first intermediate layer including a first host and a first dopant, a second intermediate layer including the first dopant, and a third intermediate layer including a second host and the first dopant interposed between the first electrode and the emission layer. The organic light emitting device has a long lifetime.Type: ApplicationFiled: February 18, 2009Publication date: August 20, 2009Applicant: Samsung Mobile Display Co., Ltd.Inventors: Choon-Woo Lim, Kwan-Hee Lee, Kyung-Hoon Choi, Dong-Hun Kim
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Publication number: 20080299365Abstract: Organic light emitting devices including an electron transport-emission layer, and methods of preparing the same are included. The electron transport-emission layer may be an electron transport-red emission layer, an electron transport-green emission layer or an electron transport-blue emission layer. The methods produce high yields of the organic light emitting devices and are less expensive than conventional methods.Type: ApplicationFiled: May 16, 2008Publication date: December 4, 2008Inventors: Kyung-Hoon Choi, Kwan-Hee Lee, Min-Seung Chun, Choon-Woo Lim
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Publication number: 20080111476Abstract: Organic light emitting diodes (OLEds) are provided. In one embodiment, an OLED includes a first electrode, a second electrode and an organic layer positioned between the first and second electrodes. The organic layer comprises an organic metal complex represented by the formula [M(L)2]a, in which L is an anionic ligand, M is a metal that can be five-coordinated or six-coordinated with L, and a is an integer ranging from 2 to 4.Type: ApplicationFiled: April 13, 2007Publication date: May 15, 2008Inventors: Kyung-Hoon Choi, Kwan-Hee Lee, Min-Seung Chun, Choon-Woo Lim