公开(公告)号：US20180204901A1

公开(公告)日：2018-07-19

申请号：US15860579

申请日：2018-01-02

Applicant: Samsung Display Co., Ltd.

Inventor： Suhwan Hwang ,  Youngtae Choi ,  Jongwoo Park ,  Youngsun Hwang

IPC: H01L27/32 ,  H01L51/00

CPC classification number: H01L27/3276 ,  H01L27/3248 ,  H01L51/0097 ,  H01L2227/323 ,  H01L2251/5338

Abstract: A flexible display device includes a substrate including a non-bending area and a bending area adjacent to the non-bending area, and a crack prevention pattern disposed in the bending area. The bending area includes a first area having a first stress when bending, a second area having a second stress less than the first stress when bending, and a third area having a third stress less than the second stress when bending. The crack prevention pattern includes a plurality of crack prevention lines. The number of the crack prevention lines in the first area is greater than the number of the crack prevention lines in the third area.

公开(公告)号：US11996045B2

公开(公告)日：2024-05-28

申请号：US18094926

申请日：2023-01-09

Applicant: Samsung Display Co., Ltd.

Inventor： Junehwan Kim ,  Yoonho Kim ,  Taeyoung Kim ,  Jongwoo Park ,  Daeyoun Cho

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0262 ,  G09G2310/08 ,  G09G2320/0626

Abstract: A pixel includes: a first driving transistor and a second driving transistor; a first select transistor connected between a gate of the first driving transistor and a gate node; and a second select transistor connected between a gate of the second driving transistor and the gate node.

公开(公告)号：US20230389396A1

公开(公告)日：2023-11-30

申请号：US18109033

申请日：2023-02-13

Applicant: Samsung Display Co., Ltd.

Inventor： Hyunmin Hwang ,  Jongwoo Park ,  Youngtae Choi

IPC: H10K59/80 ,  H10K71/00

CPC classification number: H10K59/873 ,  H10K71/851 ,  H10K59/8793

Abstract: A display apparatus includes a display layer located on a surface of a substrate and including a plurality of pixels, a thin-film encapsulation layer located on the display layer, the thin-film encapsulation layer including at least one inorganic layer and at least one organic layer, a polarization film located on the thin-film encapsulation layer, and a protective film located on another surface of the substrate, which is opposite to the surface of the substrate, the protective film corresponding to the display layer. A difference between a coefficient of thermal expansion of the polarization film and a coefficient of thermal expansion of the protective film is in a range of about 0 μm/° C. to about 5 μm/° C.

公开(公告)号：US11545627B2

公开(公告)日：2023-01-03

申请号：US16559332

申请日：2019-09-03

Applicant: Samsung Display Co., Ltd.

Inventor： Daeyoun Cho ,  Jongwoo Park ,  Youngtae Choi ,  Jiho Moon ,  Ju hee Lee ,  Younjae Jung

IPC: G01R31/26 ,  H01L51/00 ,  H01L27/32

Abstract: A test device includes: a plurality of signal test pads electrically connected to pads of an input sensing unit; a power test pad electrically connected to a power pattern of a display unit; a test circuit configured to apply a test signal to the signal test pads; a voltage generator configured to generate a sensing power voltage; and a ripple controller configured to change a voltage level of the sensing power voltage to apply the sensing power voltage to the power test pad.

公开(公告)号：US11417277B2

公开(公告)日：2022-08-16

申请号：US17096388

申请日：2020-11-12

Applicant: Samsung Display Co., Ltd.

Inventor： Daeyoun Cho ,  Jongwoo Park ,  Eugene Kim ,  Youngtae Choi

IPC: H01L51/52 ,  G09G3/3258 ,  H01L27/32

Abstract: A display device includes a substrate including a display area and a non-display area adjacent to the display area, a pixel disposed in the display area, a first voltage line disposed in the non-display area and supplying a first power supply voltage to the pixel, a second voltage line disposed in the non-display area and supplying a second power supply voltage to the pixel, the second voltage line being apart from the first voltage line, and a metallic pattern disposed between the first voltage line and the second voltage line. A shortest distance between the first voltage line and the second voltage line is greater than a width of the metallic pattern.

公开(公告)号：US20220157924A1

公开(公告)日：2022-05-19

申请号：US17397916

申请日：2021-08-09

Applicant: Samsung Display Co., Ltd.

Inventor： June Hwan Kim ,  Yoonho Kim ,  Tae Young Kim ,  Jongwoo Park

IPC: H01L27/32

Abstract: A display device may include a driving transistor disposed in a display area, a test transistor disposed in a peripheral area adjacent to the display area, and a resistance line disposed in the peripheral area, electrically connected to the test transistor and including a metal oxide.

公开(公告)号：US11024699B2

公开(公告)日：2021-06-01

申请号：US16509455

申请日：2019-07-11

Applicant: Samsung Display Co., Ltd.

Inventor： Tae Young Kim ,  Jongwoo Park ,  Youn Jae Jung ,  Hyojung Kim

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

Abstract: A display device may include an insulation layer, a wire directly contacting the insulation layer, a first electrode overlapping the insulation layer, an organic light emitting layer positioned on the first electrode, and a second electrode positioned on the organic light emitting layer. The wire may include an aluminum alloy that includes at least one of copper, vanadium, and silicon. The first electrode may include silver.

公开(公告)号：US10345942B2

公开(公告)日：2019-07-09

申请号：US15843775

申请日：2017-12-15

Applicant: Samsung Display Co., Ltd.

Inventor： Daeyoun Cho ,  Cheolkyu Kim ,  Hyojung Kim ,  Jongwoo Park ,  Youngsun Hwang

IPC: G06F3/042 ,  G06F3/041 ,  H01L27/32 ,  H01L51/00 ,  G06K9/00 ,  H01L27/146

Abstract: A display panel includes a base layer, a circuit layer, and a pixel layer. The base layer includes a plurality of light emitting areas, and a plurality of transmitting areas to transmit light incident thereto. The circuit layer includes a plurality of switching devices disposed on the light emitting areas, and a plurality of photosensors disposed on the transmitting areas. The pixel layer includes a light emitting element to emit light based on reception of a current from at least one of the plurality of switching devices. The light emitting element overlaps with one of the plurality of light emitting areas. At least one of the plurality of phototosensors is configured to receive a portion of external light reflected from an external object after transmission of the external light through at least one of the plurality of transmitting areas.

公开(公告)号：US20240016039A1

公开(公告)日：2024-01-11

申请号：US18322414

申请日：2023-05-23

Applicant: Samsung Display Co., Ltd.

Inventor： Donggi Ahn ,  Jongwoo Park ,  Soonwook Hong

IPC: H10K59/80 ,  G09G3/3233

CPC classification number: H10K59/873 ,  G09G3/3233 ,  G09G2300/0842

Abstract: A display device includes: a substrate having an opening area, a display area at least partially extending around the opening area, and a middle area between the opening area and the display area; a light-emitting element in the display area, the light-emitting element including a pixel electrode, an opposite electrode, and a functional layer between the pixel electrode and the opposite electrode; a first separator in the middle area; a second separator between the first separator and the opening area; a first groove between the first separator and the second separator; and a first protective layer between the substrate and the first groove.

公开(公告)号：US20230165071A1

公开(公告)日：2023-05-25

申请号：US17991866

申请日：2022-11-22

Applicant: Samsung Display Co., Ltd.

Inventor： Hyojung Kim ,  Sangsub Kim ,  Jongwoo Park ,  Junehwan Kim ,  Taeyoung Kim ,  Youngtae Choi ,  Hyuncheol Hwang

IPC: H01L27/32 ,  H01L51/56 ,  H01L51/05 ,  H01L51/00

CPC classification number: H01L27/3274 ,  H01L51/0037 ,  H01L51/56 ,  H01L51/0094 ,  H01L51/0512 ,  H01L2227/323

Abstract: The invention provides a display apparatus and a method for manufacturing the same. The display apparatus includes a substrate and a thin-film transistor. The thin-film transistor includes a semiconductor layer disposed on the substrate and includes a gate electrode overlapping the semiconductor layer and insulated from the semiconductor layer. The semiconductor layer includes a polysilicon layer and an organic layer. The polysilicon layer has a first surface and has an uneven surface overlapping the first surface. The organic layer is disposed on the uneven surface of polysilicon layer and includes an organic semiconductor material.