LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME

• Main Authors: KIM CHAN-SU, KIM KWANG-HEE, JANG EUN-JOO, PARK KUN-SU
• Format: Patent
• Language: Chinese; English
• Published: 05.03.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; NANOTECHNOLOGY; PERFORMING OPERATIONS; SEMICONDUCTOR DEVICES; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TRANSPORTING

The invention relates to a light emitting device and a display device including the same. A light emitting device includes an emission layer including a plurality of quantum dots, and an electron auxiliary layer disposed on the emission layer, the electron auxiliary layer to transport electrons to the emission layer, wherein the electron auxiliary layer includes a plurality of metal oxide nanoparticles, wherein the metal oxide nanoparticles include zinc and a dopant metal, wherein the dopant metal includes Mg, Mn, Ni, Sn, Al, Y, Ga, Zr, Ni, Li, Co, or a combination thereof, wherein the dopantmetal in at least one of the metal oxide nanoparticles is included in the meal oxide nanoparticle to have a concentration gradient of the dopant metal. 本发明涉及发光器件和包括其的显示设备。发光器件包括：包括多个量子点的发射层、和设置在所述发射层上的电子辅助层，所述电子辅助层将电子传输至所述发射层，其中所述电子辅助层包括多个金属氧化物纳米颗粒，其中所述金属氧化物纳米颗粒包括锌和掺杂剂金属，其中所述掺杂剂金属包括Mg、Mn、Ni、Sn、Al、Y、Ga、Zr、Li、Co、或其组合，其中所述金属氧化物纳米颗粒的至少一个中的所述掺杂剂金属的浓度在从所述纳米颗粒的内部部分到外部部分的方向上增加，或者在从所述纳米颗粒的外部部分到内部部分的方向上增加。