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公开(公告)号：US11997862B2
公开(公告)日：2024-05-28
申请号：US16725529
申请日：2019-12-23
Applicant: LG Display Co., Ltd.
Inventor： JoonYoung Heo , Daehee Kim , JiYoung Park , YoungHoon Son , Hyeju Choi
IPC: H10K50/15 , G02B27/01 , H10K50/11 , H10K50/16 , H10K50/17 , H10K50/858 , H10K59/122 , H10K101/40
CPC classification number: H10K50/15 , H10K50/11 , H10K50/16 , H10K50/17 , H10K50/858 , H10K59/122 , G02B27/017 , G02B2027/0178 , H10K2101/40
Abstract: A display device comprises a substrate provided with a first subpixel and a second subpixel adjacent to the first subpixel, a first electrode provided on the substrate, including a first sub electrode provided on the first subpixel and a second sub electrode provided on the second subpixel, an organic light emitting layer including a first organic light emitting layer arranged on the first sub electrode and a second organic light emitting layer arranged on the second sub electrode, a second electrode arranged on the organic light emitting layer, and a first bank provided between the first sub electrode and the second sub electrode, partitioning the first subpixel from the second subpixel, wherein the first organic light emitting layer includes a light emitting layer and a first hole transporting layer arranged on the light emitting layer, the first hole transporting layer includes a first sub hole transporting layer and a second sub hole transporting layer, and the first sub hole transporting layer of the first hole transporting layer covers the light emitting layer between the light emitting layer and the second sub hole transporting layer. Therefore, as the first sub hole transporting layer is provided to cover the light emitting layer of the organic light emitting layer, the organic light emitting layer may be prevented from being damaged by an exposure process or a solution process, whereby a defect rate of the complete display device may be reduced.
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公开(公告)号：US20230209911A1
公开(公告)日：2023-06-29
申请号：US18086858
申请日：2022-12-22
Applicant: LG DISPLAY CO., LTD.
Inventor： Younghoon Son , Daehee Kim , Jiyoung Park , Hyeju Choi
IPC: H10K59/122 , H10K59/35 , H10K71/60 , H10K85/10
CPC classification number: H10K59/122 , H10K59/353 , H10K71/60 , H10K85/10
Abstract: A display device including a plurality of pixels disposed on a substrate, each pixel including a plurality of sub-pixels; a first electrode disposed in each sub-pixel and connected to transistors for driving the plurality of sub-pixels to emit light; and a bank including a plurality of bank holes, each bank hole exposing a portion of the first electrode and defining emission light-areas of the sub-pixels. Further, each sub-pixel includes a sub-pixel pattern disposed on a bottom surface of the bank hole and contacting exposed surfaces of the first electrode, and extending continuously on sidewalls of the bank hole and along top outside edge surfaces of the bank. Also, a thickness of the sub-pixel pattern decreases step-by-step as the sub-pixel pattern extends along the top outside edge surfaces of the bank in a direction toward an adjacent sub-pixel.
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Patent Agency Ranking
公开(公告)号：US11538867B2
公开(公告)日：2022-12-27
申请号：US17239259
申请日：2021-04-23
Applicant: LG Display Co., Ltd.
Inventor： Daehee Kim , JiYoung Park , Hyeju Choi
Abstract: The present disclosure provides an electroluminescent display apparatus including a substrate including a first subpixel, a second subpixel, and a third subpixel, a first electrode in each of the first subpixel, the second subpixel, and the third subpixel on the substrate, a bank provided in a boundary between any two of the first subpixel, the second subpixel, and the third subpixel to cover an edge of the first electrode, a protection layer on the first electrode and the bank, a light emitting layer on the protection layer, and a second electrode on the light emitting layer.
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公开(公告)号：US11211438B2
公开(公告)日：2021-12-28
申请号：US16696531
申请日：2019-11-26
Applicant: LG Display Co., Ltd.
Inventor： JiYoung Park , KyungHoon Lee , Daehee Kim , Hyeju Choi
Abstract: An electroluminescent display apparatus comprises a first subpixel, a second subpixel, and a third subpixel defined on a substrate; a first electrode disposed in each of the first subpixel, the second subpixel, and the third subpixel in the substrate; a bank provided between two adjacent subpixels among the first subpixel, the second subpixel, and the third subpixel to cover an edge of the first electrode; a first light emitting layer disposed on the first electrode of the first subpixel; a second light emitting layer disposed on the first electrode of the second subpixel; a third light emitting layer disposed on the first electrode of the third subpixel; and a second electrode disposed on the first to third light emitting layers, wherein the third light emitting layer is extended onto the bank between the first subpixel and the second subpixel.
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公开(公告)号：US11024678B2
公开(公告)日：2021-06-01
申请号：US16660772
申请日：2019-10-22
Applicant: LG Display Co., Ltd.
Inventor： Daehee Kim , JiYoung Park , Hyeju Choi
Abstract: The present disclosure provides an electroluminescent display apparatus including a substrate including a first subpixel, a second subpixel, and a third subpixel, a first electrode in each of the first subpixel, the second subpixel, and the third subpixel on the substrate, a bank provided in a boundary between any two of the first subpixel, the second subpixel, and the third subpixel to cover an edge of the first electrode, a protection layer on the first electrode and the bank, a light emitting layer on the protection layer, and a second electrode on the light emitting layer.
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公开(公告)号：US20240387478A1
公开(公告)日：2024-11-21
申请号：US18649409
申请日：2024-04-29
Applicant: LG Display Co, Ltd.
Inventor： Daehee Kim , MoonSoo Kim
IPC: H01L25/075 , H01L25/16 , H01L27/12 , H01L33/56
Abstract: A light emitting display apparatus includes a substrate including a display area and a non-display area, a light emitting layer provided in a pixel in the display area, a cathode on the light emitting layer, and an auxiliary electrode connected to the cathode through a contact hole in the pixel, and a fluorine-based protective layer that covers an upper surface, a lower surface, and a side surface of a contact-area light emitting layer that is in the contact hole.
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公开(公告)号：US11088208B2
公开(公告)日：2021-08-10
申请号：US16600440
申请日：2019-10-11
Applicant: LG Display Co., Ltd.
Inventor： Daehee Kim , JiYoung Park , Hyeju Choi
Abstract: A display device comprises a substrate provided with a first subpixel area and a second subpixel area, a first electrode provided on the substrate, including a first sub electrode provided in the first subpixel area and a second sub electrode provided in the second subpixel area, an organic light emitting layer including a first organic light emitting layer arranged on the first sub electrode and a second organic light emitting layer arranged on the second sub electrode, and a second electrode arranged on the organic light emitting layer, wherein the first organic light emitting layer includes a first pattern layer, a second pattern layer provided on the first pattern layer and a third pattern layer provided on the second pattern layer, the second organic light emitting layer includes a first pattern layer, a second pattern layer provided on the first pattern layer and a third pattern layer provided on the second pattern layer, the first pattern layer of the first organic light emitting layer is spaced apart from the first pattern layer of the second organic light emitting layer, the second pattern layer of the first organic light emitting layer is spaced apart from the second pattern layer of the second organic light emitting layer, and the third pattern layer of the first organic light emitting layer is connected with the third pattern layer of the second organic light emitting layer, and the second pattern layer of the first organic light emitting layer is provided to cover an upper surface and a side of the first pattern layer of the first organic light emitting layer. Therefore, a damage of the light emitting layer can be reduced.
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