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1
US2021036255A1
LIGHT EMITTING ELEMENT AND DISPLAY PANEL INCLUDING THE SAME
Publication/Patent Number: US2021036255A1 Publication Date: 2021-02-04 Application Number: 16/901,672 Filing Date: 2020-06-15 Inventor: Kim, Sungwook   Kim, Kyungsik   Kim, Seulong   Naijo, Tsuyoshi   Bae, Sung-soo   Lee, Dongchan   Jeong, Hyein   Choi, Hyewon   Chu, Seung-jin   Hur, Jaeweon   Assignee: Samsung Display Co., Ltd.   IPC: H01L51/50 Abstract: A light emitting element includes: a first electrode, a second electrode facing the first electrode, a first light emitting layer between the first electrode and the second electrode to emit a first light, a second light emitting layer between the first light emitting layer and the second electrode to emit a second light, and an intermediate layer including a host material between the first light emitting layer and the second light emitting layer and, wherein the intermediate layer has a thickness of from about 90 nm to 170 nm.
2
EP3776681A1
ORGANIC LIGHT EMITTING DIODE DISPLAY PANEL AND DISPLAY APPARATUS, FABRICATING METHOD THEREOF
Publication/Patent Number: EP3776681A1 Publication Date: 2021-02-17 Application Number: 18884854.3 Filing Date: 2018-03-30 Inventor: Wang, Pinfan   Assignee: BOE Technology Group Co., Ltd.   IPC: H01L51/50
3
US2021020859A1
LIGHT-EMITTING ELEMENT, DISPLAY DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE
Publication/Patent Number: US2021020859A1 Publication Date: 2021-01-21 Application Number: 16/923,526 Filing Date: 2020-07-08 Inventor: Seo, Satoshi   Ohsawa, Nobuharu   Hosoumi, Shunsuke   Ishisone, Takahiro   Assignee: Semiconductor Energy Laboratory Co., Ltd.   IPC: H01L51/50 Abstract: A light-emitting element having high emission efficiency which includes a fluorescent material as a light-emitting substance is provided. A light-emitting element includes a pair of electrodes and an EL layer between the pair of electrodes. The EL layer includes a light-emitting layer. The light-emitting layer includes a host material and a guest material. The host material has a difference of more than 0 eV and less than or equal to 0.2 eV between a singlet excitation energy level and a triplet excitation energy level. The guest material is capable of emitting fluorescence. The triplet excitation energy level of the host material is higher than a triplet excitation energy level of the guest material.
4
EP3490020B1
QUANTUM DOT DEVICE AND ELECTRONIC DEVICE
Publication/Patent Number: EP3490020B1 Publication Date: 2021-01-13 Application Number: 18195136.9 Filing Date: 2018-09-18 Inventor: Seo, Hongku   Jang, Eun Joo   Chung, Dae Young   Kim, Tae Ho   Lee, Sang Jin   Assignee: Samsung Electronics Co., Ltd.   IPC: H01L51/50
5
CN112216801A
发光装置和包括发光装置的显示面板
Public
Publication/Patent Number: CN112216801A Publication Date: 2021-01-12 Application Number: 202010621430.0 Filing Date: 2020-07-01 Inventor: 金瑟雍   金兑炅   姜苾求   权智英   朴恩京   宋芝英   张淳喆   郑栋燮   Assignee: 三星显示有限公司   IPC: H01L51/50 Abstract: 提供了发光装置和包括发光装置的显示面板。发光装置包括第一电极、位于第一电极上的第一堆叠体、位于第一堆叠体上的第一电荷产生层、位于第一电荷产生层上的第二堆叠体、以及位于第二堆叠体上的第二电极。第一堆叠体包括第一发光层和多个第一有机层,且第二堆叠体包括第二发光层和多个第二有机层。在多个第一有机层和多个第二有机层中,与第一发光层和第二发光层邻近的有机层中的至少一个包括发光材料。
6
CN108807699B
透明显示膜
Grant
Publication/Patent Number: CN108807699B Publication Date: 2021-02-02 Application Number: 201710284064.2 Filing Date: 2017-04-26 Inventor: 李硕   蒋雷   刁建高   Assignee: 张家港康得新光电材料有限公司   IPC: H01L51/50 Abstract: 本发明提供了一种透明显示膜。该透明显示膜包括顺序层叠的基材层和发光层,其中,发光层中设置有发光主体和发光客体,发光主体和发光客体在激发器的激发光照射下均发射可见光,且发光客体的粒径小于发光主体的粒径。由于该发光层包括发光主体和发光客体,发光主体和发光客体在激发光照射下发射可见光,且发光客体的粒径小于发光主体的粒径,从而通过设置与发光主体协同作用的发光客体,并控制发光主体与发光客体的粒径大小,不仅使透明显示膜在紫外光或可见光的照射下能够自发光,还提高了透明显示膜的发光亮度。
7
CN112331777A
量子点电致发光器件
Substantial Examination
Publication/Patent Number: CN112331777A Publication Date: 2021-02-05 Application Number: 201911042654.X Filing Date: 2019-10-30 Inventor: 苏亮   Assignee: 广东聚华印刷显示技术有限公司   IPC: H01L51/50 Abstract: 本申请涉及一种量子点电致发光器件,其包括:第一电极、发光层以及第二电极,发光层设于所述第一电极上,发光层包括第一有机半导体材料、第二有机半导体材料和量子点材料,第一有机半导体材料与第二有机半导体材料形成激基复合物,其中,第一有机半导体材料为单分子热激活延迟荧光材料,第二有机半导体材料为电子受体材料或电子给体材料。上述量子点电致发光器件的发光层中选用单分子热激活延迟荧光材料作为第一有机半导体材料,选用电子受体材料或电子给体材料作为第二有机半导体材料,并与量子点材料构成发光层材料,进而形成双通道的激子能量转移,提高了量子点电致发光器件的电光转移效率和器件稳定性。
8
US2021013444A1
ORGANIC ELECTROLUMINESCENT ELEMENT, DISPLAY DEVICE, AND ILLUMINATION DEVICE
Publication/Patent Number: US2021013444A1 Publication Date: 2021-01-14 Application Number: 16/971,859 Filing Date: 2019-02-19 Inventor: Tanaka, Junichi   Assignee: Lumiotec Inc.   IPC: H01L51/50 Abstract: An organic EL element (10) has two first light emitting units (13A) which each include a first light emitting layer (16A) having one or two peak wavelengths in a wavelength region of 440 nm to 490 nm. The first light emitting units (13A) are respectively disposed at positions adjacent to inner sides of a first electrode (11) and a second electrode (12), and a substrate is disposed on outer sides of the first electrode (11) and the second electrode (12). White light obtained by light emission of the plurality of light emitting units has a continuous emission spectrum over at least a wavelength region of 380 nm to 780 nm and, in terms of light distribution characteristics of light emitted to the outside of a substrate (18), a luminance of the white light obtained through the substrate (18) has a substantially constant value in an angle range of 0 degrees to 30 degrees from an axis perpendicular to a surface direction of the substrate (18).
9
CN109980105B
一种QLED器件
Grant
Publication/Patent Number: CN109980105B Publication Date: 2021-01-12 Application Number: 201711460056.5 Filing Date: 2017-12-28 Inventor: 张珈铭   曹蔚然   Assignee: TCL科技集团股份有限公司   IPC: H01L51/50 Abstract: 本发明提供一种QLED器件,所述QLED器件包括发光层,其在,所述发光层由蓝光量子点材料层A和黄光量子点材料层B按照[ABA]n的方式层叠形成,n为1‑3,其中,所述蓝光量子点材料与所述黄光量子点材料的价带差为0,所述蓝光量子点材料导带能级比所述黄光量子点材料的导带能级高至少0.5eV。通过在发光层中引入单带差超晶格结构提高量子点的复合效率和器件的发光纯度,避免量子点层电荷的累积。
10
US2021005834A1
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
Publication/Patent Number: US2021005834A1 Publication Date: 2021-01-07 Application Number: 16/921,188 Filing Date: 2020-07-06 Inventor: Lee, Heejae   Kim, Sung Woo   Jang, Eun Joo   Chung, Dae Young   Han, Moon Gyu   Assignee: SAMSUNG ELECTRONICS CO., LTD.   IPC: H01L51/50 Abstract: A light emitting device includes: a first electrode and a second electrode with a surface facing the first electrode; an emission layer disposed between the first electrode and the second electrode and including a quantum dot (e.g., a plurality of quantum dots); and an electron auxiliary layer disposed between the emission layer and the second electrode. The electron auxiliary layer includes a first layer including a first metal oxide, and a second layer disposed on the first layer and including a second metal oxide. A roughness of an interface between the second layer and the second electrode is less than about 10 nm as determined by an electron microscopy analysis. An absolute value of a difference between a conduction band edge energy level of the second layer and a work function of the second electrode may be less than or equal to about 0.5 eV, and a conduction band edge energy level of the first layer may be less than the conduction band edge energy level of the second layer.
11
EP3770985A1
ORGANIC ELECTROLUMINESCENCE ELEMENT
Publication/Patent Number: EP3770985A1 Publication Date: 2021-01-27 Application Number: 19771132.8 Filing Date: 2019-03-05 Inventor: Ueda, Tokiko   Sawada, Yuichi   Assignee: NIPPON STEEL Chemical & Material Co., Ltd.   IPC: H01L51/50 Abstract: Provided is an organic EL device, which shows high luminous efficiency, low voltage, and high driving stability. The organic EL device is an organic electroluminescent device having laminated, on a substrate, an anode, organic layers, and a cathode, wherein at least one layer of the organic layers uses materials including a carborane compound having a carborane ring and a biscarbazole ring, and an indolocarbazole compound having one or two indolocarbazole rings. The carborane compound is represented by the following general formula (1) where HA represents a carborane ring-containing group.
12
CN109686847B
高效率有机发光二极管元件
Grant
Publication/Patent Number: CN109686847B Publication Date: 2021-02-19 Application Number: 201710969553.1 Filing Date: 2017-10-18 Inventor: 周卓煇   Assignee: 周卓煇   IPC: H01L51/50 Abstract: 本发明开发并提出一种高效率有机发光二极管,其基础构成包括:一阳极基板、一空穴传输层、至少一发光层、一电子传输层、与一阴极层。于此高效率有机发光二极管之中,空穴传输层、发光层与电子传输层的LUMO能阶形成一阶梯式能阶;同时,其空穴传输层、发光层与电子传输层的HOMO能阶亦形成一阶梯式能阶。此外,此高效率有机发光二极管的电子传输层的电子迁移率高于发光层的电子迁移率至少两个数量级。值得说明的是,多组实验数据证实,满足上述三个条件的有机发光二极管必定能够展现优秀的光电效率,是为本发明所定义的高效率有机发光二极管元件。
13
CN110311045B
一种有机电致发光器件
Grant
Publication/Patent Number: CN110311045B Publication Date: 2021-02-26 Application Number: 201910548267.7 Filing Date: 2019-06-24 Inventor: 丁可   Assignee: 武汉华星光电半导体显示技术有限公司   IPC: H01L51/50 Abstract: 本申请公开了一种有机电致发光器件,包括:阳极;阴极,与所述阳极相对设置;发光功能层,设置在所述阳极和所述阴极之间;其中,所述发光功能层包括发光层以及位于所述发光层一侧的PN结层;当所述阳极通正电,所述阴极通负电时,所述PN结层形成断路,以使所述阴极和所述阳极向所述发光层注入载流子的速率平衡。本申请中的PN结层可以抑制迁移速率快的载流子的过多注入,使阴极注入到发光层的电子和阳极注入到发光层的空穴处于平衡状态,有利于提高有机电致发光器件的使用寿命和工作效率。
14
CN109360897B
一种显示面板及显示装置
Grant
Publication/Patent Number: CN109360897B Publication Date: 2021-01-15 Application Number: 201811082268.9 Filing Date: 2018-09-17 Inventor: 邱镇   何麟   田景文   李田田   李维维   Assignee: 云谷(固安)科技有限公司   IPC: H01L51/50 Abstract: 本发明公开了一种显示面板及显示装置。该显示面板包括:基板,以及设置于所述基板上的多个有机发光单元;所述有机发光单元包括层叠设置的阳极、电子阻挡层层、有机发光层、第二功能层和阴极;至少一个所述有机发光单元的所述有机发光层和所述电子阻挡层之间还设置有中间掺杂层,所述中间掺杂层包括发光主体材料和电子阻挡材料。本发明实施例的方案增长了显示面板的寿命。
15
CN112331782A
量子点发光器件和显示装置
Substantial Examination
Publication/Patent Number: CN112331782A Publication Date: 2021-02-05 Application Number: 201911225116.4 Filing Date: 2019-12-04 Inventor: 苏亮   Assignee: 广东聚华印刷显示技术有限公司   IPC: H01L51/50 Abstract: 本发明涉及一种量子点发光器件和显示装置,该量子点发光器件包括依次层叠设置的电子给体层、电子阻挡层和电子受体层,电子阻挡层位于电子给体层和电子受体层之间,且电子阻挡层与电子给体层和电子受体层分别接触;其中,电子给体层包含有量子点材料和电子给体材料;电子受体层包含有电子受体材料;电子阻挡层的LUMO能级小于电子受体层的LUMO能级,且电子阻挡层的HOMO能级与电子受体层的LUMO能级之差大于电子给体层中的量子点材料的激子能量。上述量子点发光器件能够实现高效、稳定的量子点发光。
16
US2021057668A1
LIGHT-EMITTING ELEMENT, DISPLAY DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE
Publication/Patent Number: US2021057668A1 Publication Date: 2021-02-25 Application Number: 17/094,374 Filing Date: 2020-11-10 Inventor: Seo, Satoshi   Ohsawa, Nobuharu   Watabe, Takeyoshi   Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.   IPC: H01L51/50 Abstract: Provided is a light-emitting element including a fluorescence-emitting material with high emission efficiency. The light-emitting element includes a pair of electrodes and an EL layer between the pair of electrodes. The EL layer includes a first organic compound, a second organic compound, and a guest material. The first organic compound has a function of emitting a thermally activated delayed fluorescence at room temperature. The guest material has a function of emitting fluorescence. A HOMO level of the first organic compound higher than or equal to a HOMO level of the second organic compound. A LUMO level of the first organic compound is lower than or equal to a LUMO level of the second organic compound.
17
CN110085756B
背接触式钙钛矿发光二极管
Grant
Publication/Patent Number: CN110085756B Publication Date: 2021-01-15 Application Number: 201910391928.X Filing Date: 2019-05-10 Inventor: 周琳   刘陶然   左玉华   郑军   刘智   成步文   Assignee: 中国科学院半导体研究所   IPC: H01L51/50 Abstract: 本发明公开了一种背接触式钙钛矿发光二极管,包括:绝缘衬底;金属电极,设置于该绝缘衬底上,该金属电极的上表面在同一平面上;第一绝缘层,包覆在该金属电极上;以及钙钛矿薄膜,设置于该第一绝缘层上。本发明提供的该钙钛矿发光二极管的结构简单与现有的CMOS工艺兼容,易于集成大规模制备,还具有可精确定制图形等优势。
18
CN109755402B
一种显示面板和显示装置
Grant
Publication/Patent Number: CN109755402B Publication Date: 2021-01-05 Application Number: 201910024284.0 Filing Date: 2019-01-10 Inventor: 高建   罗志忠   张久杰   李灏   董晴晴   杨艳芳   Assignee: 云谷(固安)科技有限公司   IPC: H01L51/50 Abstract: 本发明公开了一种显示面板和显示装置。显示面板包括层叠设置的阳极、有机发光层、第一电子传输层、载流子控制层和阴极,其中,载流子控制层的材料包括有机材料和辅助载流子迁移材料,有机材料的HOMO能级低于第一电子传输层的HOMO能级。在显示面板被施加的电压较低时,载流子控制层提高了电子传输至有机发光层的传输速率,增大了显示面板的电流密度,提高了显示面板的发光亮度。在显示面板被施加的电压比较高时,载流子控制层提高有机发光层中空穴与电子的复合平衡,增强显示面板的发光性能;同时,可以降低电压升高时电流密度的增长速率,从而延长了显示面板的寿命。
19
CN106935715B
有机发光装置
Grant
Publication/Patent Number: CN106935715B Publication Date: 2021-01-08 Application Number: 201610985019.5 Filing Date: 2016-10-31 Inventor: 金允善   金瑟雍   李廷涉   林珍娱   郑惠仁   申东雨   Assignee: 三星显示有限公司   IPC: H01L51/50 Abstract: 有机发光装置包括:第一电极;第二电极;以及在第一电极与第二电极之间的有机层,所述有机层包括发光层,其中所述有机层包括由式1表示的第一化合物和由式2表示的第二化合物,其中不包括第一化合物为4,4’‑双(N‑咔唑基)‑1,1’‑联苯(CBP)的情况:
20
EP3767695A1
ORGANIC LIGHT-EMITTING DEVICE
Publication/Patent Number: EP3767695A1 Publication Date: 2021-01-20 Application Number: 19870957.8 Filing Date: 2019-10-11 Inventor: Choi, Ji Young   Suh, Sang Duk   Lee, Woochul   Kim, Joo Ho   Kim, Hoon Jun   Lee, Dong Hoon   Assignee: LG CHEM, LTD.   IPC: H01L51/00 Abstract: The present specification provides an organic light-emitting device comprising: a first electrode; a second electrode provided to face the first electrode; and an organic material layer including a light-emitting layer provided between the first electrode and the second electrode and including an emission layer, wherein the light-emitting layer comprises a compound represented by chemical formula 1, a compound represented by chemical formula 2, and a compound represented by chemical formula 3.
Total 500 pages