公开(公告)号：US20250040375A1

公开(公告)日：2025-01-30

申请号：US18779082

申请日：2024-07-22

Applicant: Samsung Display Co., Ltd.

Inventor： Hwi KIM ,  Hye Jin GWARK ,  Jae Ik KIM ,  Jung Sun PARK ,  Seung Yong SONG ,  Duck Jung LEE ,  Yeon Hwa LEE ,  Joon Gu LEE

IPC: H10K59/131 ,  H01L27/12 ,  H10K59/12 ,  H10K59/121 ,  H10K59/88 ,  H10K71/60

Abstract: A display device may include: a connection pattern and a dummy pattern disposed to be spaced apart from each other on a substrate; a via layer on the substrate; a pixel electrode on the via layer and electrically connected to the connection pattern; a light emitting layer disposed on the pixel electrode; a control layer disposed on the light emitting layer; and a common electrode disposed on the control layer. The dummy pattern may include a first conductive layer, a second conductive layer, a third conductive layer, a fourth conductive layer, and a fifth conductive layer sequentially disposed. The first conductive layer, the third conductive layer, and the fifth conductive layer may include the same material. The second conductive layer and the fourth conductive layer may include the same material. The first, third, fifth conductive layers and the second and fourth conductive layers may include different materials.

公开(公告)号：US20240260360A1

公开(公告)日：2024-08-01

申请号：US18520673

申请日：2023-11-28

Applicant: Samsung Display Co., LTD.

Inventor： Duck Jung LEE ,  Hye Jin GWARK ,  Jae Ik KIM ,  Hwi KIM ,  Jung Sun PARK ,  Seung Yong SONG ,  Yeon Hwa LEE ,  Joon Gu LEE

IPC: H10K59/131 ,  H10K59/12 ,  H10K59/122

CPC classification number: H10K59/131 ,  H10K59/1201 ,  H10K59/122

Abstract: A display device includes: a pixel circuit layer including a base layer, a pixel circuit, and a passivation layer including a well area and a protrusion area; and a light-emitting-element layer disposed on the pixel circuit layer, and including a light emitting element, and a connecting electrode, the light emitting element including a first electrode, a second electrode, and an emission part. The connecting electrode is disposed in the protrusion area, and at least a portion of the connecting electrode overlaps the well area and does not contact the passivation layer. The emission part includes a hole layer, an electron layer, and an emission layer. The hole layer connects the first electrode and the emission layer. The electron layer connects the second electrode and the emission layer. Each of the hole layer and the second electrode has an end portion on the connecting electrode.

公开(公告)号：US20250040374A1

公开(公告)日：2025-01-30

申请号：US18778547

申请日：2024-07-19

Applicant: Samsung Display Co., Ltd.

Inventor： Hwi KIM ,  Hye Jin GWARK ,  Jae Ik KIM ,  Jung Sun PARK ,  Seung Yong SONG ,  Duck Jung LEE ,  Yeon Hwa LEE ,  Joon Gu LEE

IPC: H10K59/131 ,  H10K59/12 ,  H10K59/88

Abstract: The display device includes a connection pattern and a dummy pattern spaced apart from each other on a substrate; a via layer on the substrate; a pixel electrode on the via layer and electrically connected to the connection pattern; a light emitting layer on the pixel electrode; a control layer on the light emitting layer; and a common electrode on the control layer. The dummy pattern may include a first dummy pattern and a second dummy pattern disposed on the first dummy pattern. The first dummy pattern may include a first layer, a second layer, and a third layer each of which is made of a conductive material and is sequentially stacked. The second dummy pattern may include an organic pattern including a first portion and a second portion having different areas in a plan view.

公开(公告)号：US20240164177A1

公开(公告)日：2024-05-16

申请号：US18231787

申请日：2023-08-09

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Ik KIM ,  Hye Jin GWARK ,  Hwi KIM ,  Jung Sun PARK ,  Yeon Hwa LEE ,  Joon Gu LEE

IPC: H10K59/80 ,  H10K59/00 ,  H10K59/12 ,  H10K59/122

CPC classification number: H10K59/80516 ,  H10K59/1201 ,  H10K59/122 ,  H10K59/771

Abstract: A display device includes a pixel electrode, a pixel defining layer including an opening extending to a portion of the pixel electrode, a first auxiliary electrode on the portion of the pixel electrode to which the opening extends, a second auxiliary electrode on the first auxiliary electrode, an intermediate layer on the pixel defining layer and the second auxiliary electrode, and a common electrode on the intermediate layer. A side surface of the first auxiliary electrode is positioned inward of a side surface of the second auxiliary electrode within the opening of the pixel defining layer to form an undercut shape. A hole injection layer of the intermediate layer includes a first portion on a side surface of the pixel defining layer defining the opening of the pixel defining layer, and a second portion disconnected from the first portion and on the second auxiliary electrode.

公开(公告)号：US20240276805A1

公开(公告)日：2024-08-15

申请号：US18435431

申请日：2024-02-07

Applicant: Samsung Display Co., LTD.

Inventor： Jae Ik KIM ,  Hye Jin GWARK ,  Hwi KIM ,  Jungsun PARK ,  Yeon Hwa LEE ,  Joon Gu LEE

IPC: H10K59/131

CPC classification number: H10K59/131

Abstract: A display device includes: a substrate including a display area and a non-display area; an external common voltage line disposed in the non-display area; a common voltage line disposed in the display area and connected to the external common voltage line; a plurality of pixels positioned in the display area, each of which includes a first electrode and an emission layer; and a second electrode positioned on the pixels. The common voltage line has a multi-layered structure including a first layer, a second layer, and a third layer, the second layer defines an undercut structure therein, a width of the second layer is narrower than a width of each of the first layer and the third layer, and a length of an undercut of the undercut structure is greater than a thickness of the common voltage line.

公开(公告)号：US20240179955A1

公开(公告)日：2024-05-30

申请号：US18244535

申请日：2023-09-11

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Ik KIM ,  Hye Jin GWARK ,  Hwi KIM ,  Jung Sun PARK ,  Yeon Hwa LEE ,  Joon Gu LEE

IPC: H10K59/122 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17

CPC classification number: H10K59/122 ,  H10K50/15 ,  H10K50/16 ,  H10K50/171

Abstract: A display device includes a pixel electrode, a pixel defining layer disposed on the pixel electrode and forming an opening which exposes a portion of the pixel electrode, an auxiliary electrode disposed on the pixel defining layer and the pixel electrode, an intermediate layer disposed on the pixel defining layer and the auxiliary electrode and a common electrode disposed on the intermediate layer. The pixel defining layer includes a recessed portion recessed into the pixel defining layer, the auxiliary electrode includes a first undercut forming portion disposed on the recessed portion and contacting the portion of the pixel electrode, and the intermediate layer includes a hole injection layer, a light-emitting layer and an electron injection layer stacked sequentially. The hole injection layer includes a first portion disposed on the first undercut forming portion and a second portion separated from the first portion and disposed on the recessed portion.

公开(公告)号：US20240107857A1

公开(公告)日：2024-03-28

申请号：US18337864

申请日：2023-06-20

Applicant: Samsung Display Co., LTD.

Inventor： Joon Gu LEE ,  Hye Jin GWARK ,  Jae Ik KIM ,  Hwi KIM ,  Jung Sun PARK ,  Yeon Hwa LEE

IPC: H10K59/80 ,  G09G3/3233 ,  H10K59/12 ,  H10K59/121 ,  H10K59/122 ,  H10K59/88

CPC classification number: H10K59/80522 ,  G09G3/3233 ,  H10K59/1201 ,  H10K59/1213 ,  H10K59/122 ,  H10K59/88 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2320/0223

Abstract: A display device includes a thin-film transistor, a source/drain electrode and an auxiliary electrode including a first conductive layer and a second conductive layer disposed on the first conductive layer, a via insulating layer having a first opening exposing the auxiliary electrode, a capping layer covering a portion of the auxiliary electrode and a light emitting material layer and a common electrode layer sequentially stacked on the via insulating layer and the capping layer, wherein the source/drain electrode is electrically connected to the thin-film transistor through a contact hole penetrating the interlayer insulating layer, the auxiliary electrode has an undercut, and the capping layer includes a first capping layer covering side surfaces of the first conductive layer of the auxiliary electrode and a second capping layer separated from the first capping layer and disposed on the second conductive layer of the auxiliary electrode.