公开(公告)号：US09780321B2

公开(公告)日：2017-10-03

申请号：US15125346

申请日：2015-02-24

Applicant: JOLED INC.

Inventor： Noriyuki Matsusue ,  Kazuhiro Yoneda ,  Minh Hiep Hoang

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

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：US11568812B2

公开(公告)日：2023-01-31

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：US11245085B2

公开(公告)日：2022-02-08

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.

公开(公告)号：US10658629B2

公开(公告)日：2020-05-19

申请号：US16003287

申请日：2018-06-08

Applicant: JOLED INC.

Inventor： Kazuhiro Yoneda ,  Noriyuki Matsusue

IPC: H01L51/56 ,  H01L51/52 ,  H01L51/50 ,  H01L27/32 ,  H01L51/00 ,  G09G3/3233

Abstract: Disclosed is an organic electroluminescent element including a first electrode, a hole transport layer, a light emitting layer, an electron transport layer and a second electrode in this order. The light emitting layer has a first light emitting layer including a coating film on the hole transport layer side, and has a second light emitting layer including a vapor-deposited film on the electron transport layer side.