公开(公告)号：US11882715B2

公开(公告)日：2024-01-23

申请号：US17011920

申请日：2020-09-03

Applicant: LG Display Co., Ltd.

Inventor： Jae-Hyeon Kim ,  Seok-Hyun Kim ,  Kwan-Soo Kim ,  Young-Nam Lim

IPC: H10K50/844 ,  H10K50/818 ,  H10K50/125

CPC classification number: H10K50/818 ,  H10K50/125 ,  H10K50/844

Abstract: Disclosed is a display device which may display images in a transmission portion, and may improve uniformity of a display in both the emission portion and the transmission portion, thus may improve efficiency of a device and improve a lifespan.

公开(公告)号：US11223022B2

公开(公告)日：2022-01-11

申请号：US16549897

申请日：2019-08-23

Applicant: LG Display Co., Ltd.

Inventor： Jae-Hyeon Kim ,  Eun-Jung Park ,  Seok-Hyun Kim ,  Kwan-Soo Kim

IPC: H01L51/52 ,  H01L51/50 ,  H01L51/00

Abstract: Disclosed are a light emitting device which has improved reliability by increasing bonding force between a cathode and organic layers contacting both surfaces thereof, and a transparent display device using the same.

公开(公告)号：US10673005B2

公开(公告)日：2020-06-02

申请号：US16198293

申请日：2018-11-21

Applicant: LG Display Co., Ltd.

Inventor： Eun-Jung Park ,  Sang-Kyoung Moon ,  Seok-Hyun Kim

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

Abstract: An organic light-emitting device is disclosed. The organic light-emitting device includes light-emitting layers that emit light of the same color in a stack structure. The phosphorescence and fluorescence characteristics at the exit side and the inside of the organic light-emitting device are adjusted to improve a viewing angle, lifetime, and efficiency.

公开(公告)号：US10229954B2

公开(公告)日：2019-03-12

申请号：US15794395

申请日：2017-10-26

Applicant: LG Display Co., Ltd.

Inventor： Eun-Jung Park ,  Kwan-Soo Kim ,  Han-Byeol Seok ,  Seok-Hyun Kim

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

Abstract: An organic light-emitting device, including: a substrate including a blue sub-pixel, a green sub-pixel, and a red sub-pixel, each blue sub-pixel, green sub-pixel, and red sub-pixel respectively including an anode, a first common layer, a second common layer, and a cathode, in the blue sub-pixel, a blue light-emitting layer between the first common layer and the second common layer, in the green sub-pixel, a green light-emitting layer between the first common layer and the second common layer, and in the red sub-pixel, a red light-emitting layer between the first common layer and the second common layer, wherein HOMO energy levels of the blue, green, and red light-emitting layers are each lower than a HOMO energy level of the first common layer, and wherein the HOMO energy level of the green light-emitting layer is 0.2 eV or more higher than the HOMO energy level of the blue light-emitting layer.

公开(公告)号：US10014357B2

公开(公告)日：2018-07-03

申请号：US15718158

申请日：2017-09-28

Applicant: LG Display Co., Ltd.

Inventor： Han-Byeol Seok ,  Eun-Jung Park ,  Seok-Hyun Kim

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

CPC classification number: H01L27/3248 ,  H01L27/322 ,  H01L27/3246 ,  H01L51/5004 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5203 ,  H01L51/5278 ,  H01L2251/5346

Abstract: An organic light-emitting device, including: an anode and a cathode opposite each other, a first stack and a second stack between the anode and the cathode, and a charge generation layer between the first stack and the second stack, the charge generation layer including an n-type charge generation layer and a p-type charge generation layer, wherein the p-type charge generation layer includes one first organic material, wherein the n-type charge generation layer includes a second organic material and an n-type dopant, wherein the n-type charge generation layer is divided into a first region contacting the first stack, a second region contacting the p-type charge generation layer, and a third region between the first region and the second region, and wherein a dopant content of the n-type dopant is stepwise increased in an order of: the first region, the third region, and the second region.

公开(公告)号：US20180033995A1

公开(公告)日：2018-02-01

申请号：US15663073

申请日：2017-07-28

Applicant: LG Display Co., Ltd.

Inventor： Byung-Soo Kim ,  Han-Byeol Seok ,  Seok-Hyun Kim

IPC: H01L51/50

Abstract: An organic light-emitting device includes: an anode and a cathode opposite each other, an organic light-emitting layer between the anode and the cathode, and a hole transport unit between the anode and the organic light-emitting layer and including two or more pairs of hole injection layers and hole transport layers each formed of a respective single material, the hole injection layers and the hole transport layers being alternately stacked.

公开(公告)号：US20240188406A1

公开(公告)日：2024-06-06

申请号：US18443114

申请日：2024-02-15

Applicant: LG Display Co., Ltd.

Inventor： Young-Nam Lim ,  Hyun-Chul Choi ,  Kwan-Soo Kim ,  Seok-Hyun Kim ,  Jae-Hyeon Kim

IPC: H10K71/00 ,  H10K50/17 ,  H10K59/35

CPC classification number: H10K71/00 ,  H10K50/17 ,  H10K50/171 ,  H10K59/35

Abstract: A display device includes a substrate including a display area having first color subpixels and a transparent area inside the display area, an array layer in the display area on the substrate, a first electrode in the first color subpixels on the array layer, a first emission assisting layer on the first electrode, an emitting material layer in the first color subpixels on the first emission assisting layer, a second emission assisting layer on the emitting material layer, a deposition preventing layer in the transparent area on the second emission assisting layer, a second electrode on the second emission assisting layer, the second electrode selectively disposed in a region where the deposition preventing layer is not disposed, an encapsulating layer on the deposition preventing layer and the second electrode, a polarizing layer in the display area on the encapsulating layer, an auxiliary equipment in the transparent area under the substrate.

公开(公告)号：US11678560B2

公开(公告)日：2023-06-13

申请号：US17102028

申请日：2020-11-23

Applicant: LG Display Co., Ltd.

Inventor： Young-Nam Lim ,  Hyun-Chul Choi ,  Kwan-Soo Kim ,  Seok-Hyun Kim ,  Jae-Hyeon Kim

IPC: H10K71/00 ,  H10K50/17 ,  H10K59/35

CPC classification number: H10K71/00 ,  H10K50/17 ,  H10K50/171 ,  H10K59/35

Abstract: A display device includes a substrate including a display area having first color subpixels and a transparent area inside the display area, an array layer in the display area on the substrate, a first electrode in the first color subpixels on the array layer, a first emission assisting layer on the first electrode, an emitting material layer in the first color subpixels on the first emission assisting layer, a second emission assisting layer on the emitting material layer, a deposition preventing layer in the transparent area on the second emission assisting layer, a second electrode on the second emission assisting layer, the second electrode selectively disposed in a region where the deposition preventing layer is not disposed, an encapsulating layer on the deposition preventing layer and the second electrode, a polarizing layer in the display area on the encapsulating layer, an auxiliary equipment in the transparent area under the substrate.

公开(公告)号：US10566562B2

公开(公告)日：2020-02-18

申请号：US15663073

申请日：2017-07-28

Applicant: LG Display Co., Ltd.

Inventor： Byung-Soo Kim ,  Han-Byeol Seok ,  Seok-Hyun Kim

IPC: H01L51/50 ,  H01L51/52

Abstract: An organic light-emitting device includes: an anode and a cathode opposite each other, an organic light-emitting layer between the anode and the cathode, and a hole transport unit between the anode and the organic light-emitting layer and including two or more pairs of hole injection layers and hole transport layers each formed of a respective single material, the hole injection layers and the hole transport layers being alternately stacked.

公开(公告)号：US10373559B2

公开(公告)日：2019-08-06

申请号：US15838887

申请日：2017-12-12

Applicant: LG DISPLAY CO., LTD.

Inventor： Seok-Hyun Kim ,  Eun-Jung Park ,  Ho-Sung Kim

IPC: H01L29/08 ,  G09G3/3233 ,  G09G3/3291 ,  H01L51/52 ,  G09G3/3216 ,  H01L27/32 ,  G09G3/3225

Abstract: An organic light-emitting device and an organic light-emitting display device using the same are discussed. In a structure in which emission layers that emit light having the same color are provided in a plurality of stacks, the emission layers have different properties such that the light emission efficiencies of the stacks are made uniform, whereby the lifespan of the organic light-emitting device is increased through charge balance.