公开(公告)号：US11700734B2

公开(公告)日：2023-07-11

申请号：US16953370

申请日：2020-11-20

Applicant: JOLED Inc.

Inventor： Toshiyuki Akiyama ,  Yasuhiro Sekimoto ,  Muneharu Sato ,  Shinichiro Ishino ,  Tomohiko Oda ,  Mineki Hasegawa

IPC: H10K50/11 ,  H10K71/00 ,  H10K101/40 ,  H10K50/16 ,  H10K59/35 ,  H10K101/30

CPC classification number: H10K50/11 ,  H10K71/00 ,  H10K50/166 ,  H10K59/35 ,  H10K2101/30 ,  H10K2101/40

Abstract: An organic electroluminescence element including an anode, a light-emitting layer, a functional layer, and a cathode stacked in this order. The light-emitting layer and the functional layer are in contact with each other. Hole mobility of the light-emitting layer is greater than electron mobility of the light-emitting layer. The electron mobility of the light-emitting layer is equal to or greater than an effective electron mobility of the functional layer. A highest occupied molecular orbital (HOMO) level of a first functional material included in the light-emitting layer is at least 0.4 eV greater than a HOMO level of a second functional material included in the functional layer.

公开(公告)号：US10008698B2

公开(公告)日：2018-06-26

申请号：US14966322

申请日：2015-12-11

Applicant: JOLED INC.

Inventor： Toshiyuki Akiyama ,  Kaori Akamatsu

IPC: H01L29/08 ,  H01L51/56 ,  H01L51/50

CPC classification number: H01L51/56 ,  H01L51/5012 ,  H01L2227/323 ,  H01L2251/55

Abstract: An organic electroluminescence (EL) element including: an anode; a first functional layer above the anode, the first functional layer having at least one of a hole injection property and a hole transport property; a light-emitting layer above the first functional layer, the light-emitting layer including an organic light-emitting material doped with an electron donor material; a second functional layer above the light-emitting layer, the second functional layer having at least one of an electron injection property and an electron transport property; and a cathode disposed above the second functional layer, wherein carrier density of the light-emitting layer is from 1012/cm3 to 1019/cm3.

公开(公告)号：US10756308B2

公开(公告)日：2020-08-25

申请号：US15988514

申请日：2018-05-24

Applicant: JOLED INC.

Inventor： Toshiyuki Akiyama ,  Kaori Akamatsu

IPC: H01L51/56 ,  H01L51/50

Abstract: An organic electroluminescence (EL) element including: an anode; a first functional layer above the anode, the first functional layer having at least one of a hole injection property and a hole transport property; a light-emitting layer above the first functional layer, the light-emitting layer including an organic light-emitting material doped with an electron donor material; a second functional layer above the light-emitting layer, the second functional layer having at least one of an electron injection property and an electron transport property; and a cathode disposed above the second functional layer, wherein carrier density of the light-emitting layer is from 1012/cm3 to 1019/cm3.

公开(公告)号：US20220199930A1

公开(公告)日：2022-06-23

申请号：US17557072

申请日：2021-12-21

Applicant: JOLED Inc.

Inventor： Yasuhiro Sekimoto ,  Shinichiro Ishino ,  Toshiyuki Akiyama ,  Tomohiko Oda ,  Muneharu Sato

IPC: H01L51/50 ,  H01L51/56

Abstract: An organic EL element including an anode, a cathode, and a light emitting layer between the anode and the cathode. The light emitting layer includes a fluorescent material and a host material. A difference between a lowest unoccupied molecular orbital (LUMO) level of the fluorescent material and a highest occupied molecular orbital (HOMO) level of the fluorescent material is less than or equal to a difference between a LUMO level and a HOMO level of the host material. The LUMO level of the fluorescent material is equal to or higher than the LUMO level of the host material. The HOMO level of the fluorescent material is equal to or higher than the HOMO level of the host material, and a difference in energy level between the HOMO level of the fluorescent material and the HOMO level of the host material is 0.3 eV or less.

公开(公告)号：US20150221870A1

公开(公告)日：2015-08-06

申请号：US14428787

申请日：2013-04-16

Applicant: JOLED INC.

Inventor： Yoichi Shintani ,  Ryuichi Murai ,  Toshiyuki Akiyama ,  Akinobu Iwamoto

IPC: H01L51/00 ,  H01L27/32

CPC classification number: H01L51/0013 ,  H01L27/3211 ,  H01L27/3244 ,  H01L27/3246 ,  H01L27/3248 ,  H01L51/0005

Abstract: A method for manufacturing an EL display device, the EL display device including: a light-emitter emitting light of at least red, green, and blue colors; and a thin-film transistor array device controlling light-emission of the light-emitter, the light-emitter including at least red, green, and blue light-emitting layers arranged within regions partitioned by banks, and being sealed with a sealing layer, the method including: preparing at least three types of transfer substrates corresponding to red, green, and blue colors, each transfer substrate having a supporting substrate on which a transfer layer including at least red, green, or blue light-emitting material is formed by an inkjet method; and when forming the light-emitting layers, repeatedly performing a transfer process that includes transferring the transfer layer onto a transfer-target substrate of the EL display device by using the transfer substrate.

Abstract translation: 一种用于制造EL显示装置的方法，所述EL显示装置包括：发射至少具有红色，绿色和蓝色的光的发光体; 以及控制所述发光体的发光的薄膜晶体管阵列器件，所述发光体至少包括布置在由堤分隔开的区域内的红色，绿色和蓝色发光层，并且用密封层密封， 该方法包括：制备至少三种对应于红色，绿色和蓝色的转印衬底，每个转印衬底具有支撑衬底，其上至少包括红色，绿色或蓝色发光材料的转印层由 喷墨法; 并且当形成发光层时，重复进行转印处理，该转印工艺包括通过使用转印衬底将转印层转印到EL显示器件的转印目标衬底上。

公开(公告)号：US09704925B2

公开(公告)日：2017-07-11

申请号：US14771577

申请日：2013-08-20

Applicant: JOLED INC.

Inventor： Toshiyuki Akiyama ,  Hiroyuki Ajiki

IPC: H01L27/14 ,  H01L21/00 ,  H01L27/32 ,  H01L51/50

CPC classification number: H01L27/3211 ,  H01L27/3246 ,  H01L51/5012 ,  H01L51/5036 ,  H01L51/5056 ,  H01L2251/558

Abstract: An EL display device including a light emitter configured to emit at least red, green, and blue light; and a thin film transistor array that controls light emission. The light emitter includes light-emitting layers within areas defined by a bank that emit at least red, green, and blue light. The light emitter further includes electrodes that extend under the bank and hole transport layers that are above the electrodes within the areas defined by the bank, the light-emitting layers being formed on the hole transport layers. The hole transport layers each have a main portion and a peripheral protrusion in contact with a side surface of the bank that protrudes upwards from the main portion. The light-emitting layers each have a peripheral protrusion in contact with a side surface of the bank, formed above a corresponding one of the peripheral protrusions.