公开(公告)号：US20180269433A1

公开(公告)日：2018-09-20

申请号：US15988514

申请日：2018-05-24

Applicant: JOLED INC.

Inventor： Toshiyuki AKIYAMA ,  Kaori AKAMATSU

IPC: 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：US20220158112A1

公开(公告)日：2022-05-19

申请号：US17529277

申请日：2021-11-18

Applicant: JOLED Inc.

Inventor： Toshiyuki AKIYAMA ,  Shinichiro ISHINO ,  Yasuhiro SEKIMOTO ,  Muneharu SATO ,  Takeshi KAMIYA ,  Tomohiko ODA ,  Mineki HASEGAWA ,  Masakazu TAKATA

IPC: H01L51/50 ,  H01L51/52 ,  H01L51/56

Abstract: An organic EL element including an anode, a first functional layer including organic material, disposed above the anode, a second functional layer including organic material, disposed on and in contact with the first functional layer, a light emitting layer disposed on and in contact with the second functional layer, and a cathode disposed above the light emitting layer. A highest occupied molecular orbital (HOMO) level of the organic material of the second functional layer has an energy level at least 0.2 eV lower than that of a HOMO level of the organic material of the first functional layer, and film thickness of the second functional layer is 15 nm or less.

公开(公告)号：US20210167312A1

公开(公告)日：2021-06-03

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: H01L51/50 ,  H01L51/56

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：US20170077190A1

公开(公告)日：2017-03-16

申请号：US15309232

申请日：2015-05-21

Applicant: JOLED INC.

Inventor： Jun HASHIMOTO ,  Hirotaka NANNO ,  Masakazu TAKATA ,  Toshiyuki AKIYAMA

IPC: H01L27/32 ,  H01L51/56 ,  G09F9/30

CPC classification number: H01L27/3213 ,  G09F9/30 ,  H01L27/322 ,  H01L51/5265 ,  H01L51/56

Abstract: Pixels include red sub-pixels, green sub-pixels, first blue sub-pixels that emit dark blue light, and second blue sub-pixels that emit light blue light. Above a substrate, first blue pixel electrodes and first blue organic light-emitting layers are layered in regions of the first blue sub-pixels and second blue pixel electrodes and second blue organic light-emitting layers are layered in regions of the second blue sub-pixels. The first blue light-emitting layers and the second blue light-emitting layers are made from the same material. In a direction perpendicular to a top plane of the substrate, a distance between top surfaces of the first blue organic light-emitting layers and top surfaces of the first blue pixel electrodes is less than a distance between top surfaces of the second blue organic light-emitting layers and the surfaces of the second blue pixel electrodes.

Abstract translation: 像素包括红色子像素，绿色子像素，发出深蓝色光的第一蓝色子像素和发出浅蓝色光的第二蓝色子像素。 在基板上方，第一蓝色像素电极和第一蓝色有机发光层被层叠在第一蓝色子像素和第二蓝色像素电极的区域中，第二蓝色有机发光层层叠在第二蓝色子像素电极的区域中， 像素。 第一蓝色发光层和第二蓝色发光层由相同的材料制成。 在垂直于基板的顶面的方向上，第一蓝色有机发光层的顶面与第一蓝色像素电极的顶面之间的距离小于第二蓝色有机发光层的顶面之间的距离， 发光层和第二蓝色像素电极的表面。

公开(公告)号：US20170288162A1

公开(公告)日：2017-10-05

申请号：US15472427

申请日：2017-03-29

Applicant: JOLED INC. ,  JAPAN DISPLAY INC.

Inventor： Toshiyuki AKIYAMA ,  Kosuke MISHIMA ,  Takahiro KOMATSU

IPC: H01L51/50 ,  H01L51/52

Abstract: ΔE1 denoting difference between LUMO energy level of hole transport and LUMO energy level of light-emitting layer, μe1 denoting electron mobility of the hole transport layer, and μe2 denoting electron mobility of the light-emitting layer satisfy μ   e   1 μ   e   2 × exp  ( - Δ   E   1 × 38.681731 ) ≤ 2.090 × 10 - 2 when    μ   e   1

公开(公告)号：US20200373494A1

公开(公告)日：2020-11-26

申请号：US16877509

申请日：2020-05-19

Applicant: JOLED Inc.

Inventor： Tomohiko ODA ,  Shinichiro ISHINO ,  Toshiyuki AKIYAMA ,  Mineki HASEGAWA ,  Yasuhiro SEKIMOTO ,  Muneharu SATO

IPC: H01L51/00 ,  H01L51/56 ,  C09D11/033 ,  C09K11/02

Abstract: Disclosed is a light-emitting layer-forming ink useful in forming an organic light-emitting layer for an organic EL element by a printing process, including a tetralin-based organic solvent, and a solute including an anthracene-based, low molecular material and dissolved at a concentration of 3% or higher and 12% or lower in the tetralin-based organic solvent.

公开(公告)号：US20160172614A1

公开(公告)日：2016-06-16

申请号：US14966322

申请日：2015-12-11

Applicant: JOLED INC.

Inventor： Toshiyuki AKIYAMA ,  Kaori AKAMATSU

IPC: H01L51/50 ,  H01L51/56

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.

Abstract translation: 一种有机电致发光（EL）元件，包括：阳极; 阳极上方的第一功能层，所述第一功能层具有空穴注入性和空穴传输性中的至少一种; 所述发光层包括掺杂有电子给体材料的有机发光材料; 在发光层上方的第二功能层，所述第二功能层具有电子注入性和电子传输性中的至少一种; 以及设置在第二功能层上方的阴极，其中发光层的载流子密度为1012 / cm3至1019 / cm3。

公开(公告)号：US20160005798A1

公开(公告)日：2016-01-07

申请号：US14771577

申请日：2013-08-20

Applicant: JOLED INC.

Inventor： Toshiyuki AKIYAMA ,  Hiroyuki AJIKI

IPC: 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.

Abstract translation: 一种EL显示装置，包括被配置为发射至少红色，绿色和蓝色光的发光体; 以及控制发光的薄膜晶体管阵列。 光发射器包括发射至少红色，绿色和蓝色光的堤区限定的区域内的发光层。 光发射器还包括在由堤组限定的区域内在电极上方的堤岸和空穴传输层下延伸的电极，发光层形成在空穴传输层上。 空穴输送层各自具有主体部分和周边突起，与主体部分向上突出的堤岸的侧表面接触。 所述发光层各自具有与所述堤的侧面接触的周边突起，形成在相应的一个周边突起的上方。