公开(公告)号：US11812630B2

公开(公告)日：2023-11-07

申请号：US16965682

申请日：2019-01-29

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Wooyong Sung ,  Junghan Seo ,  Kwanhyuck Yoon

IPC: H10K50/115 ,  H10K50/84 ,  H10K50/86 ,  H10K59/38 ,  H10K71/00 ,  H10K102/00 ,  H10K50/844

CPC classification number: H10K50/844 ,  H10K50/115 ,  H10K50/841 ,  H10K50/865 ,  H10K59/38 ,  H10K71/00 ,  H10K2102/00

Abstract: A display device includes a substrate, a switching element on the substrate, a pixel electrode disposed on the switching element and connected to the switching element, a light emitting layer on the pixel electrode, a common electrode on the light emitting layer, and a sealing portion on the common electrode. The sealing portion includes an organic layer, and at least one first composite inorganic layer disposed between the organic layer and the common electrode. The at least one first composite inorganic layer includes a first inorganic layer between the common electrode and the organic layer, and a second inorganic layer between the first inorganic layer and the organic layer. A refractive index of the first inorganic layer and a refractive index of the second inorganic layer are different from each other, and the first inorganic layer and the second inorganic layer contact each other.

公开(公告)号：US11778865B2

公开(公告)日：2023-10-03

申请号：US17323063

申请日：2021-05-18

Applicant: Samsung Display Co., Ltd.

Inventor： Ohjune Kwon ,  Junghan Seo

IPC: H10K59/122 ,  H10K50/844 ,  H10K102/00 ,  G09F9/30

CPC classification number: H10K59/122 ,  G09F9/301 ,  H10K50/844 ,  H10K2102/311

Abstract: A display panel includes a light emitting element layer comprising a pixel definition layer having an opening defined therethrough and a light emitting element disposed in the opening. The pixel definition layer includes a first barrier portion and a second barrier portion spaced apart from each other in a first direction to define a first space having a first length in the first direction. A first inorganic layer covers the light emitting element layer. The first inorganic layer includes an uneven upper surface corresponding to the first space. An organic layer is in contact with an upper surface of the first in layer. A first groove is defined by the upper surface of the first inorganic layer overlapping the first space. A thickness of the first inorganic layer overlapping the first space varies. The organic layer is filled in the first groove.

公开(公告)号：US20220393610A1

公开(公告)日：2022-12-08

申请号：US17867637

申请日：2022-07-18

Applicant: Samsung Display Co., Ltd.

Inventor： Wonwoo Choi ,  Wooyong Sung ,  Sooyoun Kim ,  Junghan Seo ,  Seoyeon Lee ,  Hyoungsub Lee ,  Moonwon Chang ,  Seunggun Chae

IPC: H02M7/483 ,  F03D7/02 ,  F03D7/04 ,  H02P11/04

Abstract: A display panel including: a substrate including an opening area and a display area surrounding the opening area; a plurality of display elements, each including a pixel electrode, an emission layer, and an opposite electrode, the plurality of display elements being located in the display area; a thin-film encapsulation layer covering the plurality of display elements and including an organic encapsulation layer and an inorganic encapsulation layer; a plurality of grooves located between the opening area and the display area, the plurality of grooves being concave in a depth direction of the substrate and having an undercut structure; and a partition wall located between neighboring grooves among the plurality of grooves.

公开(公告)号：US11444140B2

公开(公告)日：2022-09-13

申请号：US16991492

申请日：2020-08-12

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Junghan Seo ,  Wooyong Sung ,  Wooyoung Kim ,  Seungyong Song ,  Sunghoon Yang ,  Kwanhyuck Yoon ,  Seunggun Chae ,  Wonwoo Choi

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

Abstract: A display apparatus includes a substrate, a display area disposed on the substrate and including a plurality of pixels, a first planarization layer disposed on the substrate, a second planarization layer disposed on the first planarization layer, a pixel-defining layer disposed on the second planarization layer and covering at least one edge of a first electrode of each of the plurality of pixels, a plurality of first holes disposed between the plurality of pixels and spaced apart from the first electrode, and a first etching prevention layer disposed on a bottom surface of each of the first holes and on the first planarization layer. Each of the first holes includes an opening that passes through the second planarization layer and the pixel-defining layer.

公开(公告)号：US11196023B2

公开(公告)日：2021-12-07

申请号：US16710910

申请日：2019-12-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Junghan Seo ,  Wooyong Sung

IPC: H01L51/52 ,  H01L27/32

Abstract: A display device includes a substrate that includes a display area and a peripheral area that surrounds the display area; a display element disposed in the display area and that includes a pixel electrode, an emission layer, and an opposite electrode; a thin-film encapsulation layer that covers the display element and includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer; and at least one groove formed in the peripheral area, wherein at least a portion of the thin-film encapsulation layer fills the at least one groove, wherein the at least one groove is concave into a multi-layer structure that includes a first layer and a second layer disposed on the first layer, and the at least one groove has an undercut structure in which the second layer protrudes toward a center of the at least one groove.

公开(公告)号：US11075362B2

公开(公告)日：2021-07-27

申请号：US16592625

申请日：2019-10-03

Applicant: Samsung Display Co., Ltd.

Inventor： Junghan Seo ,  Wooyong Sung

IPC: H01L51/52 ,  H01L27/32 ,  H01L51/00

Abstract: A display panel includes a base substrate including a front surface and a rear surface and having first and second holes, and a pixel layer on the base substrate. A display area is defined in the front surface. The first hole overlaps with the display area and penetrates the front and rear surfaces. The second hole overlaps with the display area, is adjacent to the first hole, and is recessed from the front surface. The base substrate includes a first base layer including the rear surface, a first barrier layer on the first base layer and including first inorganic films having a first refractive index, and second inorganic films having a second refractive index, a second base layer on the first barrier layer, and a second barrier layer on the second base layer and including the front surface. The first and second inorganic films are alternately stacked.

公开(公告)号：US11050041B2

公开(公告)日：2021-06-29

申请号：US16516437

申请日：2019-07-19

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Wonwoo Choi ,  Sooyoun Kim ,  Junghan Seo ,  Wooyong Sung ,  Seoyeon Lee ,  Hyoungsub Lee ,  Moonwon Chang ,  Seunggun Chae

IPC: H01L27/32 ,  H01L51/52

Abstract: A display panel includes a peripheral region adjacent to a display region. The display region includes a hole peripheral region, and a recessed region is overlapped with the hole peripheral region. The display panel also includes a barrier layer with a penetrating opening overlapped with the recessed region, a circuit layer on the barrier layer and including transistor and insulating layers, and a device layer including an organic light emitting area coupled to the circuit layer. In addition, a module hole is overlapped with the hole peripheral region and penetrates the base substrate, and a first groove is overlapped with the hole peripheral region and corresponds to a portion of the base substrate that is recessed from a top surface of the barrier layer and that encloses the module hole. The insulating layers include inorganic layers and an organic layer having side portions enclosing the module hole.

公开(公告)号：US10862068B2

公开(公告)日：2020-12-08

申请号：US16401536

申请日：2019-05-02

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Wonwoo Choi ,  Wooyong Sung ,  Sooyoun Kim ,  Junghan Seo ,  Seoyeon Lee ,  Hyoungsub Lee ,  Moonwon Chang ,  Seunggun Chae

IPC: H01L29/04 ,  H01L51/52 ,  H01L27/32

Abstract: A display panel includes a plurality of display elements arranged in a display area, an opening, a multi-layer including a first layer and a second layer disposed on the first layer, and a groove. Each display element includes a pixel electrode, an emission layer disposed on the pixel electrode, and an opposite electrode disposed on the emission layer. The display area surrounds the opening. The groove is located between the opening and the display area. The groove has an undercut cross-section that is concave in a thickness direction of the multi-layer, the second layer includes a pair of tips that protrude toward a center of the groove, and a length of each tip is less than about 2 μm.

公开(公告)号：US10756156B2

公开(公告)日：2020-08-25

申请号：US16173554

申请日：2018-10-29

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Wooyong Sung ,  Junghan Seo ,  Kwanhyuck Yoon ,  Sooyoun Kim ,  Jongki Kim ,  Seungho Yoon ,  Heeyeon Lee ,  Moonwon Chang

IPC: H01L27/32 ,  H01L51/52 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3291 ,  H01L51/50 ,  H01L51/56

Abstract: A display device includes a substrate, a pixel circuit unit which is disposed on the substrate and having a first hole, a light blocking layer which is disposed on the pixel circuit unit and having a second hole corresponding to the first hole, a light emitting layer disposed on the pixel circuit unit, and a sealing unit on the light blocking layer. The substrate includes a first layer having a depression corresponding to the first hole, and a second layer which is disposed between the first layer and the pixel circuit unit and having a third hole between the depression and the second hole. The sealing unit includes a cover portion on the light blocking layer, and an extension portion extending from the cover portion. The depression has a width larger than a width of the third hole.

公开(公告)号：US10541380B1

公开(公告)日：2020-01-21

申请号：US16458319

申请日：2019-07-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Wooyong Sung ,  Wonwoo Choi ,  Sooyoun Kim ,  Junghan Seo ,  Seoyeon Lee ,  Hyoungsub Lee ,  Moonwon Chang ,  Seunggun Chae ,  Seungyong Song

IPC: H01L51/52 ,  G06F3/041 ,  G06F3/044 ,  H01L27/32 ,  H01L21/762 ,  H01L51/00

Abstract: A display device includes: a substrate that includes an opening and a display area that surrounds the opening; a plurality of grooves formed in the substrate between the opening and the display area; a display element layer on the substrate and that includes a plurality of display elements in the display area; a thin-film encapsulation layer disposed on the display element layer, the thin-film encapsulation layer including a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer which are sequentially stacked; a planarization layer disposed over the plurality of grooves and that includes an organic insulating material, wherein the planarization layer is disposed over the second inorganic encapsulation layer, and the organic encapsulation layer is disposed below the second inorganic encapsulation layer.