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公开(公告)号：US20210175456A1
公开(公告)日：2021-06-10
申请号：US17102049
申请日：2020-11-23
Applicant: LG Display Co., Ltd.
Inventor： Wook SONG , Eun-Jung PARK , Chun-Ki KIM , Se-Ung KIM
Abstract: Disclosed are a white organic light emitting element, which may uniformize the color coordinates of white regardless of a change in current density by changing the configuration of different kinds of light emitting layers contacting each other, and a display device using the same.
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公开(公告)号：US20230217669A1
公开(公告)日：2023-07-06
申请号：US18082583
申请日：2022-12-16
Applicant: LG Display Co., Ltd.
Inventor： Myeong Seon CHO , Wook SONG , Sae Mi PARK , Jung Keun KIM , Do Han KIM , Byung Soo KIM , Hye Seung KANG
CPC classification number: H10K50/13 , H10K50/12 , H10K50/15 , H10K50/16 , H10K59/351 , H10K85/654 , H10K85/6572 , H10K85/6574 , H10K85/6576 , B82Y30/00
Abstract: A light emitting device including a first electrode and a second electrode facing each other, and a first blue stack, a first charge generation layer, and a phosphorescent stack disposed between the first electrode and the second electrode. The phosphorescent stack includes a hole transport layer, a red light emitting layer, a green light emitting layer, and an electron transport layer. The red light emitting layer includes an electron transport host represented by Formula 1, a hole transport host different from the hole transport layer, and a red dopant.
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公开(公告)号：US20230217816A1
公开(公告)日：2023-07-06
申请号：US18084235
申请日：2022-12-19
Applicant: LG Display Co., Ltd.
Inventor： Wook SONG , Myeong Seon CHO , Sae Mi PARK , Jung Keun KIM , Do Han KIM , Byung Soo KIM , Hye Seung KANG
CPC classification number: H01L51/0067 , H01L51/0072 , H01L51/0073 , H01L51/0074 , H01L51/504 , H01L51/5012
Abstract: Disclosed is a light emitting device capable of improving color purity and luminance, reducing a material driving voltage, and exhibiting a longer lifespan by changing the configuration of a green stack. The light emitting device includes a first electrode and a second electrode facing each other, and a light emitting unit including a p-type charge generation layer, a hole transport layer, and a green light emitting layer, which are sequentially stacked, wherein the green light emitting layer includes a triazine-based compound as a host and a phosphorescent dopant.
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公开(公告)号：US20230217668A1
公开(公告)日：2023-07-06
申请号：US18071289
申请日：2022-11-29
Applicant: LG Display Co., Ltd.
Inventor： Myeong Seon CHO , Sae Mi PARK , Wook SONG
CPC classification number: H01L51/5024 , H01L51/5072 , H01L51/504 , H01L27/3244
Abstract: Discussed is a light-emitting device that can include a first electrode and a second electrode facing each other, and disposed on a substrate; a first light emitting stack and a second light emitting stack between the first electrode and the second electrode; and a charge generation stack between the first light emitting stack and the second light emitting stack. The charge generation stack can include a first layer including a first host, a second host, and a metal dopant, and a second layer including the first host, the metal dopant, a third host, and a p-type organic dopant. Amounts of the metal dopant in the first layer and the second layer respectively can increase in going towards an interface between the first layer and the second layer.
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公开(公告)号：US20220209138A1
公开(公告)日：2022-06-30
申请号：US17546396
申请日：2021-12-09
Applicant: LG Display Co., Ltd.
Inventor： Yu Jeong LEE , Wook SONG
IPC: H01L51/00
Abstract: A white organic light-emitting device including a first electrode, a second electrode, the second electrode and the first electrode facing each other, a blue light-emitting stack, a phosphorescent light-emitting stack including a hole transport layer, an electron transport layer, a red light-emitting layer, and a green light-emitting layer that includes a hole-transporting host, an electron-transporting host, a first dopant having a green emission peak, and a non-emissive second dopant, where the blue light-emitting stack and the phosphorescent light-emitting stack are between the first electrode and the second electrode, and a charge generation layer interposed between the blue light-emitting stack and the phosphorescent light-emitting stack.
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Patent Agency Ranking
公开(公告)号：US20210175457A1
公开(公告)日：2021-06-10
申请号：US17104440
申请日：2020-11-25
Applicant: LG Display Co., Ltd.
Inventor： Eun-Jung PARK , Jung-Keun KIM , Wook SONG , Tae-Shick KIM
Abstract: Disclosed herein are a white organic light-emitting device. The white organic light-emitting device enables an overall improvement in characteristics such as color temperature, efficiency, luminance, and service life, by changing the configuration of different types of emission layers in contact with each other, and a display device using the same.
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公开(公告)号：US20230217815A1
公开(公告)日：2023-07-06
申请号：US18079709
申请日：2022-12-12
Applicant: LG Display Co., Ltd.
Inventor： Wook SONG , Min Hyeong HWANG , Myeong Seon CHO , Chun Ki KIM , Sae Mi PARK , Young Jun YU , Jung Keun KIM , Byung Soo KIM , Sang Beom KIM
CPC classification number: H01L51/0067 , H01L27/3211 , H01L51/0072 , H01L51/006 , H01L51/0061 , H01L51/5072
Abstract: A light emitting device and a light emitting display including the same. The light emitting device includes an anode and a cathode facing each other, a first stack and a second stack disposed between the anode and the cathode, the first stack including a first electron transport layer comprising a first material represented by Formula 1, a first blue light emitting layer containing a boron-based compound emitting light having a wavelength of 430 nm to 480 nm, and a first electron-blocking layer including a second material including a spirofluorene group, and at least one hydrogen atom on at least one side of the spirofluorene group is substituted by deuterium, and the second stack including at least two phosphorescent light emitting layers emitting light having a longer wavelength than that of the light emitted by the first blue light emitting layer, and a charge generation layer.
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公开(公告)号：US20230090815A1
公开(公告)日：2023-03-23
申请号：US17959225
申请日：2022-10-03
Applicant: LG Display Co., Ltd.
Inventor： Eun-Jung PARK , Jung-Keun KIM , Wook SONG , Tae-Shick KIM
Abstract: Disclosed herein are a white organic light-emitting device. The white organic light-emitting device enables an overall improvement in characteristics such as color temperature, efficiency, luminance, and service life, by changing the configuration of different types of emission layers in contact with each other, and a display device using the same.
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公开(公告)号：US20220209159A1
公开(公告)日：2022-06-30
申请号：US17549660
申请日：2021-12-13
Applicant: LG DISPLAY CO., LTD.
Inventor： Wook SONG , Yu Jeong LEE
IPC: H01L51/50
Abstract: An organic light-emitting diode and a display device using the same are provided. An organic light-emitting diode includes: a hole injection layer, a hole transport layer on the hole injection layer, a first emission layer configured to generate light of a short wavelength in a visible band, the first emission layer being on the hole transport layer, wherein one or more of the hole injection layer and the hole transport layer includes a phosphorescent dopant material at an interface between the hole injection layer and the hole transport layer.
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公开(公告)号：US20220209155A1
公开(公告)日：2022-06-30
申请号：US17552112
申请日：2021-12-15
Applicant: LG Display Co., Ltd.
Inventor： Hui Kun YUN , Wook SONG
Abstract: A display apparatus including a light-emitting layer is provided. The light-emitting layer may be disposed between a first electrode and a second electrode. The light-emitting layer may include a first emission stack and a second emission stack on the first emission stack. The first emission stack may include a blue emission material layer. The second emission stack may include an emission buffer layer, a first phosphorescent emission material layer and a second phosphorescent emission material layer, which are sequentially stacked. The emission buffer layer may include a host having an electron transporting properties and a red dopant. The content of the red dopant in the emission buffer layer may decrease as a distance from the first charge generation layer increases. Thus, in the display apparatus, a color change at low-current may be improved.
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