公开(公告)号：US20180351124A1

公开(公告)日：2018-12-06

申请号：US15993567

申请日：2018-05-30

Applicant: JOLED INC.

Inventor： Kazuhiro YONEDA ,  Tatsuya MATSUMI ,  Noriyuki MATSUSUE

IPC: H01L51/50

Abstract: An organic electroluminescent unit is provided with a plurality of organic electroluminescent elements. At least one of the organic electroluminescent elements includes, in order, a first electrode, a hole transport layer, a light-emitting layer, an electron transport layer, and a second electrode. The hole transport layer, the light-emitting layer, and the electron transport layer satisfy the following expressions: ΔEg(T1)≥0 eV ΔEg(T1)=ETa+ETb−2×ETEML where ETa represents a T1 level of the hole transport layer, ETb represents a T1 level of the electron transport layer, and ETEML represents a T1 level of the light-emitting layer.

公开(公告)号：US20180026222A1

公开(公告)日：2018-01-25

申请号：US15607874

申请日：2017-05-30

Applicant: JOLED INC.

Inventor： Kazuhiro YONEDA ,  Noriyuki MATSUSUE

IPC: H01L51/50 ,  H01L27/32

CPC classification number: H01L51/5012 ,  H01L27/32 ,  H01L27/3244 ,  H01L51/0012 ,  H01L51/5056 ,  H01L51/5072 ,  H01L2251/5361

Abstract: An organic electroluminescence device includes, in order, a first electrode, a hole transport layer, an organic light-emitting layer, an electron transport layer, and a second electrode. The hole transport layer is configured by a coated film. The organic light-emitting layer is configured by a coated film. The organic light-emitting layer is made of an organic light-emitting material that has a molecular orientation degree specified by a parameter S′. The parameter S′ satisfies an inequality: 0.66

公开(公告)号：US20170309854A1

公开(公告)日：2017-10-26

申请号：US15526574

申请日：2015-11-17

Applicant: JOLED INC.

Inventor： Kazuhiro YONEDA ,  Noriyuki MATSUSUE

IPC: H01L51/50 ,  H01L51/00 ,  G09F9/30

CPC classification number: H01L51/5004 ,  C09K11/06 ,  G09F9/30 ,  H01L51/0004 ,  H01L51/0039 ,  H01L51/0043 ,  H01L51/0052 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/5012 ,  H01L51/5056 ,  H01L51/5088 ,  H01L2251/552 ,  H05B33/14 ,  H05B33/145

Abstract: An organic electroluminescent (EL) element includes: a first electrode; an interlayer formed above the first electrode; an organic light-emitting layer formed using the interlayer as a foundation; and a second electrode formed above the organic light-emitting layer. The organic light-emitting layer contains at least a host material and a dopant material. The interlayer is formed using a material which has an energy gap larger than an energy gap of the dopant material and a highest occupied molecular orbital (HOMO) level deeper than a HOMO level of the dopant material.

公开(公告)号：US20170222173A1

公开(公告)日：2017-08-03

申请号：US15125346

申请日：2015-02-24

Applicant: JOLED INC.

Inventor： Noriyuki MATSUSUE ,  Kazuhiro YONEDA ,  Minh Hiep HOANG

IPC: H01L51/50 ,  H01L51/52 ,  H01L51/56 ,  H01L27/32

CPC classification number: H01L51/5044 ,  H01L27/3213 ,  H01L27/322 ,  H01L27/3246 ,  H01L51/5218 ,  H01L51/5234 ,  H01L51/5265 ,  H01L51/56 ,  H01L2251/5315

Abstract: An organic EL display panel includes light-reflective electrodes, a first red light-emitting layer, a green light-emitting layer, a first blue light-emitting layer, a second red light-emitting layer, a charge generating layer, a second blue light-emitting layer, and a light-transmissive electrode. In a red and a white sub-pixel region, a first optical length is from 20 nm to 50 nm, and a second optical length is from 210 nm to 230 nm. In a green sub-pixel region, the first optical length is from 20 nm to 50 nm, and the second optical length is from 240 nm to 295 nm. In a blue sub-pixel region, the first optical length is from 20 nm to 60 nm, and the second optical length is from 195 nm to 205 nm.

公开(公告)号：US20220076626A1

公开(公告)日：2022-03-10

申请号：US17466154

申请日：2021-09-03

Applicant: JOLED INC.

Inventor： Eiji IWAUCHI ,  Kazuki SAWA ,  Kazuhiro YONEDA

IPC: G09G3/3233

Abstract: A display device includes: a luminance converter which converts input gradation value into a corresponding target luminance value; a luminance correction calculator which calculates output gradation value from the target luminance value using efficiency residual ratio representing a deterioration degree of a light-emitting element, and calculates a corrected luminance value therefrom; a current stress calculator which converts current stress amount on a light-emitting element calculated from the corrected luminance value into current stress amount when first reference current flows through the light-emitting element, and accumulates this to calculate an accumulated first stress amount; a CB stress calculator which converts CB stress amount on the light-emitting element into current stress amount when second reference current flows through the light-emitting element, and accumulates this to calculate an accumulated second stress amount; and an efficiency residual ratio calculator which updates the efficiency residual ratio, using the accumulated first and second stress amounts calculated.

公开(公告)号：US20180026220A1

公开(公告)日：2018-01-25

申请号：US15607861

申请日：2017-05-30

Applicant: JOLED INC.

Inventor： Kazuhiro YONEDA ,  Noriyuki MATSUSUE

IPC: H01L51/50 ,  H01L51/52

Abstract: An organic electroluminescence device includes, in order, a first electrode, a hole transport layer, an organic light-emitting layer, an electron transport layer, and a second electrode. The hole transport layer is configured by a coated film. The organic light-emitting layer is configured by a coated film. The organic light-emitting layer has a light emission region provided in the organic light-emitting layer on side of the electron transport layer.

公开(公告)号：US20160141539A1

公开(公告)日：2016-05-19

申请号：US14902881

申请日：2014-07-02

Applicant: JOLED INC.

Inventor： Minh Hiep HOANG ,  Noriyuki MATSUSUE ,  Masaki NISHIMURA ,  Kazuhiro YONEDA

IPC: H01L51/50 ,  H01L51/56

CPC classification number: H01L51/5004 ,  H01L51/0067 ,  H01L51/007 ,  H01L51/5012 ,  H01L51/5076 ,  H01L51/5092 ,  H01L51/56 ,  H01L2251/558

Abstract: An organic EL element includes: an anode; a light-emitting layer that is disposed above the anode; a first interlayer that is disposed on the light-emitting layer; a second interlayer that is disposed on the first interlayer; a functional layer that is disposed on the second interlayer; and a cathode that is disposed above the functional layer. The first interlayer includes a fluorine compound including a first metal that is an alkali metal or an alkaline-earth metal. The second interlayer includes a second metal that has a property of cleaving a bond between the first metal and fluorine in the fluorine compound. The functional layer has at least one of an electron transport property and an electron injection property. A thickness D1 of the first interlayer and a thickness D2 of the second interlayer satisfy 3%≦D2/D1≦25%.

Abstract translation: 有机EL元件包括：阳极; 设置在阳极上方的发光层; 设置在所述发光层上的第一中间层; 设置在所述第一中间层上的第二中间层; 设置在所述第二中间层上的功能层; 以及设置在功能层上方的阴极。 第一中间层包括含有作为碱金属或碱土类金属的第一金属的氟化合物。 第二中间层包括具有在氟化合物中切割第一金属和氟之间的键的性质的第二金属。 功能层具有电子传输性和电子注入性中的至少一种。 第一中间层的厚度D1和第二层间的厚度D2满足3％＆lt; N1; D2 / D1＆nlE; 25％。

公开(公告)号：US20220068204A1

公开(公告)日：2022-03-03

申请号：US17406433

申请日：2021-08-19

Applicant: JOLED INC.

Inventor： Eiji IWAUCHI ,  Kazuki SAWA ,  Kazuhiro YONEDA

IPC: G09G3/3233

Abstract: A display device includes: a luminance converter which converts input gradation value into a corresponding target luminance value; a luminance correction calculator which calculates output gradation value from the target luminance value and calculates a corrected luminance value from the output gradation value, using an efficiency residual ratio which is an index representing the light-emitting element deterioration degree; a current stress calculator which converts current stress amount on the light-emitting element calculated from the corrected luminance value into current stress amount when reference current flows through the light-emitting element, and calculates the accumulated current stress amount; a temperature stress calculator which converts temperature stress amount on the light-emitting element under environmental temperature into temperature stress amount on the light-emitting element under reference temperature, and calculates the accumulated current stress amount; and an efficiency residual ratio calculator which updates the efficiency residual ratio, using the accumulated current and temperature stress amounts.

公开(公告)号：US20210151709A1

公开(公告)日：2021-05-20

申请号：US17088602

申请日：2020-11-04

Applicant: JOLED Inc.

Inventor： Kazuhiro YONEDA ,  Takahiro KOMATSU

IPC: H01L51/52 ,  H01L51/56 ,  H01L27/32

Abstract: A display panel including a power supplying auxiliary electrode above the substrate in at least one gap among gaps between pixel electrodes in row and column directions, not in contact with the pixel electrodes, extending in the row and/or column direction. An intermediate layer is on or above light-emitting layers and the auxiliary electrode, and includes a fluoride of an alkali metal or an alkaline earth metal. A functional layer is on or above the intermediate layer, and includes an organic material that facilitates electron transport and/or facilitates electron injection and a rare earth metal dopant. A counter electrode is on or above the functional layer. Further, 1≤x≤3, 20≤y≤40, and y≥10x+10, where x is film thickness of the intermediate layer in nanometers, and y is percentage by weight of the rare earth metal dopant in the functional layer.

公开(公告)号：US20200295290A1

公开(公告)日：2020-09-17

申请号：US16817614

申请日：2020-03-13

Applicant: JOLED Inc.

Inventor： Hiroki TSUJIMURA ,  Kazuhiro YOKOTA ,  Hideyuki SHIRAHASE ,  Kazuhiro YONEDA

IPC: H01L51/50 ,  H01L51/56

Abstract: Disclosed is a self light-emitting element including a first electrode, a light-emitting layer disposed above the first electrode, a function layer disposed above the light-emitting layer, and doped with a metal, and a second electrode disposed above the function layer, in which the function layer has a multilayer structure of at least three layers including an uppermost layer, a lowermost layer, and an intermediate layer between the uppermost layer and the lowermost layer, and the intermediate layer is doped with the metal at a lower concentration than the uppermost layer and the lowermost layer.