公开(公告)号：US20240260304A1

公开(公告)日：2024-08-01

申请号：US18375715

申请日：2023-10-02

申请人： LG Display Co., Ltd.

发明人： Dong Ik LEE ,  Jin Hwan PARK ,  Ji Yun KIM ,  Dong Hyuk KIM ,  Yong Hwan KIM

IPC分类号： H10K50/19 ,  H10K50/13

CPC分类号： H10K50/19 ,  H10K50/131

摘要： A light emitting device includes a first electrode and a second electrode facing each other on a substrate, and an intermediate layer including a first blue stack, a first charge generation layer, and a phosphorescent stack between the first electrode and the second electrode. The first blue stack includes a hole transport layer, a first blue light-emitting layer, a second blue light-emitting layer, and an electron transport layer in this order. Further, the first blue light-emitting layer includes a first host and a blue dopant, and the second blue light-emitting layer includes a second host and the blue dopant. Also, a triplet energy level of the first host is greater than a triplet energy level of the second host and is smaller than a triplet energy level of the dopant.

公开(公告)号：US20240260298A1

公开(公告)日：2024-08-01

申请号：US18235577

申请日：2023-08-18

申请人： LG Display Co., Ltd.

发明人： Sun-Hee LEE ,  Hong-Seok CHOI ,  Sung-Min JO

IPC分类号： H10K50/13 ,  H10K50/805 ,  H10K85/60

CPC分类号： H10K50/13 ,  H10K50/805 ,  H10K85/6574

摘要： The present disclosure relates to an organic light emitting diode (OLED) where an emissive layer comprises four emitting parts each of which is sequentially disposed between a first electrode and a second electrode; and charge generation layers each of which is disposed between emitting parts, where one emitting part comprises a red emitting material layer and a blue emitting material layer comprising a blue emitter and a host having a high HOMO and/or a LUMO energy levels. The OLED may implement efficient white emission by improving the blue emission intensity and/or blue temperature.

公开(公告)号：US20240251586A1

公开(公告)日：2024-07-25

申请号：US18585418

申请日：2024-02-23

申请人： LG Display Co., Ltd.

发明人： Wook Song ,  Eun-Jung Park ,  Chun-Ki Kim ,  Se-Ung Kim

IPC分类号： H10K50/13 ,  H10K50/11 ,  H10K50/15 ,  H10K50/19 ,  H10K59/12 ,  H10K59/38 ,  H10K85/30 ,  H10K85/60 ,  H10K101/00 ,  H10K101/10 ,  H10K101/30 ,  H10K101/40

CPC分类号： H10K50/131 ,  H10K50/11 ,  H10K50/15 ,  H10K50/19 ,  H10K59/38 ,  H10K59/12 ,  H10K85/342 ,  H10K85/654 ,  H10K2101/10 ,  H10K2101/27 ,  H10K2101/30 ,  H10K2101/40 ,  H10K2101/90

摘要： 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.

公开(公告)号：US20240237385A1

公开(公告)日：2024-07-11

申请号：US18368304

申请日：2023-09-14

申请人： LG Display Co., Ltd.

发明人： Sun-Hee LEE ,  Hui-Kun YUN ,  Woo-Young LEE ,  Sung-Min JO

IPC分类号： H10K50/13 ,  H10K50/81 ,  H10K50/82 ,  H10K85/60

CPC分类号： H10K50/13 ,  H10K50/81 ,  H10K50/82 ,  H10K85/6572

摘要： 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. An emissive layer disposed between two electrodes includes a blue emitting material layer and a red emitting material layer disposed adjacently to the blue emitting material layer, where a first host in the blue emitting material layer and a second host in the red emitting material layer have controlled energy levels. As red and blue luminous efficiencies are controlled in balance, stable blue luminous efficiency and beneficial red luminous lifespan can be implemented.

公开(公告)号：US20240224570A1

公开(公告)日：2024-07-04

申请号：US18471872

申请日：2023-09-21

申请人： LG Display Co., Ltd.

发明人： Woo-Young LEE ,  Hui-Kun YUN ,  Sun-Hee LEE ,  Sung-Min JO

IPC分类号： H10K50/13 ,  H10K85/60

CPC分类号： H10K50/131 ,  H10K85/626 ,  H10K85/654 ,  H10K85/6572

摘要： An organic light emitting diode (OLED) and an organic light emitting device including the OLED (e.g., a display device or a lighting device) are disclosed herein. An emissive layer disposed between two electrodes includes a charge control layer with controlled hole mobility and/or a HOMO energy level between a red emitting material layer and a blue emitting material layer. The blue luminous efficiency can be improved and exciton recombination zone is formed within an emitting material layer by injecting holes and electrons into the emitting material layer in balance. As the luminous efficiency of red and blue lights is controlled in balance, beneficial blue luminous efficiency and excellent red luminous efficiency can be realized.

公开(公告)号：US20240224569A1

公开(公告)日：2024-07-04

申请号：US18540402

申请日：2023-12-14

申请人： LG Display Co., Ltd.

发明人： Ki Min LIM ,  Seung Kwang ROH ,  Woo Chul CHOI ,  Sang Kyoung MOON ,  Dong Il CHOI

IPC分类号： H10K50/13 ,  H10K50/805 ,  H10K59/122 ,  H10K59/35

CPC分类号： H10K50/13 ,  H10K50/805 ,  H10K59/122 ,  H10K59/351 ,  H10K59/353

摘要： A light emitting display device can include a first area including a first light emitting portion to emit a first color of light, a second light emitting portion to emit a second color of light, and a third light emitting portion to emit a third color of light; and a second area adjacent to the first area, the second area including a fourth light emitting portion to emit the first color of light, a fifth light emitting portion to emit the second color of light, a sixth light emitting portion to emit the third color of light, and a seventh light emitting portion to emit white light. Also, each of the first, second, third, fourth, fifth, sixth and seventh light emitting portions includes a plurality of stacks, and a light emitting layer in at least one of the plurality of stacks is continuous and extends into the seventh light emitting portion from one of the other light emitting portions.

公开(公告)号：US20240215291A1

公开(公告)日：2024-06-27

申请号：US18555927

申请日：2022-04-11

申请人： SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

发明人： Shinya SASAGAWA ,  Ryota HODO ,  Hiroaki HONDA ,  Yasunori SASAMURA

IPC分类号： H10K50/13 ,  H10K59/131 ,  H10K71/00 ,  H10K71/40 ,  H10K71/60

CPC分类号： H10K50/13 ,  H10K59/131 ,  H10K71/40 ,  H10K71/60 ,  H10K71/621

摘要： Provided is a display device with high display quality. The display device includes a first pixel and a second pixel provided to be adjacent to the first pixel. The first pixel includes a first pixel electrode, a first EL layer over the first pixel electrode, and a common electrode over the first EL layer; the second pixel includes a second pixel electrode, a second EL layer over the second pixel electrode, and the common electrode over the second EL layer; each of the first pixel electrode and the second pixel electrode has a tapered shape on a side surface; a taper angle of the tapered shape is smaller than 90 degrees; and the display device includes a region where the distance between the first pixel electrode and the second pixel electrode is less than or equal to one micrometer.

公开(公告)号：US20240215285A1

公开(公告)日：2024-06-27

申请号：US18516027

申请日：2023-11-21

申请人： LG Display Co., Ltd.

发明人： Sungjin PARK ,  lnbum SONG ,  Dohan KIM ,  Jaemin MOON ,  Seokwoo KANG ,  Soonjae HWANG

IPC分类号： H10K50/12 ,  H10K50/13 ,  H10K85/30 ,  H10K85/60

CPC分类号： H10K50/12 ,  H10K50/13 ,  H10K85/342 ,  H10K85/633 ,  H10K85/653 ,  H10K85/654 ,  H10K85/655

摘要： Disclosed is an organic light-emitting diode including: a first electrode; a second electrode facing the first electrode; and an organic layer disposed between the first electrode and the second electrode; wherein the organic layer includes a light-emitting layer, wherein the light-emitting layer includes a dopant material and a host material, wherein the dopant material includes an organometallic compound represented by Chemical Formula 1, wherein the host material includes a mixture of a compound represented by Chemical Formula 2 and a compound represented by Chemical Formula 3.

公开(公告)号：US20240206209A1

公开(公告)日：2024-06-20

申请号：US18589868

申请日：2024-02-28

申请人： Semiconductor Energy Laboratory Co., Ltd.

发明人： Satoshi SEO ,  Takeyoshi WATABE ,  Satomi MITSUMORI

IPC分类号： H10K50/11 ,  C07D241/38 ,  C07D403/12 ,  C07D405/10 ,  C09K11/02 ,  C09K11/06 ,  H10K50/13 ,  H10K59/35 ,  H10K85/30 ,  H10K85/60 ,  H10K101/00 ,  H10K101/10 ,  H10K101/30 ,  H10K101/40

CPC分类号： H10K50/11 ,  C07D241/38 ,  C07D403/12 ,  C07D405/10 ,  C09K11/02 ,  C09K11/06 ,  H10K85/342 ,  H10K85/633 ,  H10K85/636 ,  H10K85/6572 ,  H10K85/6574 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1014 ,  C09K2211/1022 ,  C09K2211/1029 ,  C09K2211/1033 ,  C09K2211/1044 ,  C09K2211/1048 ,  C09K2211/1051 ,  C09K2211/1059 ,  C09K2211/1088 ,  C09K2211/1092 ,  C09K2211/185 ,  C09K2211/188 ,  H10K50/131 ,  H10K59/35 ,  H10K85/615 ,  H10K2101/10 ,  H10K2101/27 ,  H10K2101/30 ,  H10K2101/40 ,  H10K2101/90 ,  Y02P20/582

摘要： To provide a light-emitting element with high emission efficiency and low driving voltage. The light-emitting element includes a guest material and a host material. A LUMO level of the guest material is lower than a LUMO level of the host material. An energy difference between the LUMO level and a HOMO level of the guest material is larger than an energy difference between the LUMO level and a HOMO level of the host material. The guest material has a function of converting triplet excitation energy into light emission. An energy difference between the LUMO level of the guest material and the HOMO level of the host material is larger than or equal to energy of light emission of the guest material.

公开(公告)号：US11997920B2

公开(公告)日：2024-05-28

申请号：US17133297

申请日：2020-12-23

申请人： IDEMITSU KOSAN CO.,LTD.

发明人： Masato Nakamura ,  Taro Yamaki ,  Ryota Takahashi

IPC分类号： H10K50/15 ,  H10K85/60 ,  H10K50/13 ,  H10K101/40

CPC分类号： H10K85/626 ,  H10K85/615 ,  H10K85/6572 ,  H10K85/6574 ,  H10K85/6576 ,  H10K50/13 ,  H10K2101/40

摘要： An organic electroluminescence device includes: an anode; a cathode; a first emitting unit including a first emitting layer and a first hole transporting zone; a first charge generating layer; and a second emitting unit including a second emitting layer, in which the first emitting unit, the first charge generating layer, and the second emitting unit are provided between the anode and the cathode in this order from the anode, the first hole transporting zone is provided between the anode and the first emitting layer, the first emitting layer contains a compound represented by a formula (1) below, and a thickness d1 of the first hole transporting zone is 60 nm or less. In the formula (1): at least one of R1 to R8 is -L13-Ar13; L11 to L13 are each independently a single bond, an arylene group or the like; and R1 to R8 not being -L13-Ar13 are each independently a hydrogen atom or the like.