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公开(公告)号：US20240276762A1
公开(公告)日：2024-08-15
申请号：US18399302
申请日：2023-12-28
Applicant: LG Display Co., Ltd.
Inventor： Ju-Hyuk KWON , Eun-Jung PARK , Jang-Dae YOUN , Yu-Jeong LEE , Hyun-Jin CHO , Jun-Su HA
IPC: H10K50/858 , H10K50/19
CPC classification number: H10K50/858 , H10K50/19 , H10K50/15 , H10K85/624 , H10K85/626 , H10K85/633 , H10K85/636 , H10K85/6574 , H10K85/6576
Abstract: An organic light emitting diode (OLED) and an organic light emitting device (e.g., a display device or a lighting device) thereof are described. The OLED comprises a first electrode, a second electrode, a first emitting part (including a first hole transporting layer (HTL) and a first emitting material layer (EML), positioned between the first and second electrodes); and a second emitting part (including a second EML and positioned between the first emitting part and the second electrode). The first EML is a blue EML, and the second EML includes at least one of a red EML and a blue EML. The first hole HTL includes a high refractive layer having a first refractive index, and a low refractive layer having a second refractive index, positioned between the high refractive layer and the first EML, where the second refractive index is smaller than the first refractive index.
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公开(公告)号：US20240268141A1
公开(公告)日：2024-08-08
申请号：US18243462
申请日：2023-09-07
Applicant: LG Display Co., Ltd.
Inventor： Eun-Jung PARK , Byung-Soo KIM , Byung-Geol KIM , Seung-Hyun KIM , Ju-Hyuk KWON , Jang-Dae YOUN , Yu-Jeong LEE , Min-Hyeong HWANG , Do-Kyun KWON , Hyun-Jin CHO
CPC classification number: H10K50/13 , H10K85/40 , H10K85/622 , H10K85/633 , H10K85/6572 , H10K2101/30
Abstract: An organic light emitting diode (OLED) and an organic light emitting device (e.g., a display device or a lighting device) comprising the OLED are described. An emissive layer includes a red emitting material layer, a yellow-green emitting material layer and a green emitting material layer disposed sequentially between two electrodes, where each of the emitting material layers has controlled thickness and includes at least one host with controlled energy level. The OLED and the organic light emitting device have improved pure color luminous efficiency and color gamut, as well as luminous efficiency and luminous lifespan.
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Patent Agency Ranking
公开(公告)号：US20240276747A1
公开(公告)日：2024-08-15
申请号：US18239882
申请日：2023-08-30
Applicant: LG Display Co., Ltd.
Inventor： Jun-Su HA , Shin-Young JEONG , Yu-Jeong LEE , Hyun-Jin CHO , Eun-Jung PARK , Ju-Hyuk KWON , Jang-Dae YOUN
CPC classification number: H10K50/11 , C09K11/02 , C09K11/06 , H10K50/131 , H10K85/622 , H10K85/626 , H10K85/6574 , H10K2101/30 , H10K2101/40
Abstract: An organic light emitting diode (OLED) and an organic light emitting device comprising the OLED (e.g., a display device or a lighting device) are described. The OLED can include a first blue emitting material layer including a first host, and a second blue emitting material layer including a second host, disposed between two electrodes. The OLED includes two blue emitting material layers so that an exciton recombination zone is distributed within the blue emitting material layers irrespective of current density or gradation. As the amount of non-emitting excitons accumulated outside of the emitting material layers is minimized, the driving voltage of the OLED can be lowered, and the luminous efficiency and the luminous lifespan of the OLED can be improved.
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公开(公告)号：US20240260293A1
公开(公告)日：2024-08-01
申请号：US18220709
申请日：2023-07-11
Applicant: LG Display Co., Ltd.
Inventor： Yu-Jeong LEE , Hyun-Jin CHO , Eun-Jung PARK , Ju-Hyuk KWON , Jang-Dae YOUN , Shin-Young JEONG , Jun-Su HA
CPC classification number: H10K50/12 , H10K50/13 , H10K50/15 , H10K50/181 , H10K85/626 , H10K85/6574 , H10K2101/30
Abstract: An organic light emitting diode (OLED) and an organic light emitting device comprising the OLED (e.g., a display device or a lighting device) are described. The OLED can include a blue emitting material layer including plural hosts with adjusted energy levels. A HOMO energy barrier between the at least one blue emitting material layer and at least one hole transport layer and/or electron blocking layer can be minimized. Holes generated at an anode or a P-type charge generation layer can be injected rapidly into the at least one blue emitting material layer without accumulating at an interface between the hole transport layer and/or the electron blocking layer, and the at least one blue emitting material layer. As the amount of non-emitting holes is minimized, the driving voltage of the OLED can be lowered, and the luminous efficiency and the luminous lifespan of the OLED can be improved.
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公开(公告)号：US20240244969A1
公开(公告)日：2024-07-18
申请号：US18231450
申请日：2023-08-08
Applicant: LG Display Co., Ltd.
Inventor： Ju-Hyuk KWON , Chun-Ki KIM , Yu-Jeong LEE , Eun-Jung PARK , Jang-Dae YOUN , Hyun-Jin CHO , Jun-Su HA
CPC classification number: H10K85/658 , C09K11/06 , H10K85/622 , H10K85/626 , H10K85/6574 , H10K50/12
Abstract: An organic light emitting diode (OLED) and an organic light emitting device comprising the OLED are described. The OLED can comprise a first electrode; a second electrode facing the first electrode; and a first emitting part (including a first blue emitting layer and a second blue emitting layer), which is positioned between the first and second electrode. The second blue emitting layer is positioned between the first blue emitting layer and the second electrode and contacting the first blue emitting layer. The first blue emitting layer includes a first host and a first dopant, and the second blue emitting layer includes a second host and a second dopant, wherein the first host is a pyrene derivative, and the second host is an anthracene derivative. An organic light emitting device can include the OLED, and can be a display device or a lighting device.
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公开(公告)号：US20240237517A1
公开(公告)日：2024-07-11
申请号：US18242851
申请日：2023-09-06
Applicant: LG Display Co., Ltd.
Inventor： Yu-Jeong LEE , Sang-Beom KIM , Eun-Jung PARK , Ju-Hyuk KWON , Jang-Dae YOUN , Shin-Young JEONG , Hyun-Jin CHO , Jun-Su HA
CPC classification number: H10K85/654 , H10K50/13 , H10K85/615 , H10K85/626 , H10K85/6572 , H10K50/166
Abstract: An organic light emitting diode (OLED) is described, having an emissive layer with an emitting part including at least one emitting material layer, a first electron transport layer, and a second electron transport layer disposed sequentially between two facing electrodes. The first electron transport layer includes a first electron transporting material of an azine-containing compound and the second electron transport layer includes a second electron transporting material of a benzimidazole-containing compound. The first electron transport layer, with controlled electron transporting property and energy level, is disposed adjacently to the at least one emitting material layer and the second electron transporting layer is disposed adjacently to the second electrode or an electron injection layer so that the OLED can lower driving voltage and can maximize luminous efficiency and luminous lifespan. An organic light emitting device including the OLED can be a display device or a lighting device.
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公开(公告)号：US20220376200A1
公开(公告)日：2022-11-24
申请号：US17876447
申请日：2022-07-28
Inventor： Kyu-Nam KIM , Duk-Young JEON , Hyun-Jin CHO , Sun-Joong PARK
Abstract: The present disclosure provides a quantum dot (QD) light emitting diode including: a first electrode; a second electrode facing the first electrode; a QD emitting material layer positioned between the first electrode and the second electrode and including a QD and an organic material; a hole auxiliary layer positioned between the first electrode and the QD emitting material layer; and an electron auxiliary layer positioned between the QD emitting material layer and the second electrode, wherein the organic material has a highest occupied molecular orbital (HOMO) level higher than a material of the hole auxiliary layer.
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