公开(公告)号：US11751423B2

公开(公告)日：2023-09-05

申请号：US17148405

申请日：2021-01-13

Applicant: Samsung Display Co., Ltd.

Inventor： Younjae Jung ,  Jongwoo Park ,  Taeyoung Kim ,  Heejin Kim ,  Youngtae Choi

IPC: H10K50/844 ,  H10K71/00 ,  H10K77/10 ,  H10K59/12

CPC classification number: H10K50/844 ,  H10K71/00 ,  H10K77/10 ,  H10K59/12 ,  H10K59/1201

Abstract: A display apparatus includes: a substrate including: a display area including a plurality of thin film transistors, and a plurality of display elements electrically connected to the plurality of thin film transistors; a first non-display area outside the display area; and a second non-display area at least partially surrounded by the display area; a through portion passing through the substrate in a vertical direction in the second non-display area; a metal layer surrounding the through portion at the second non-display area; and a hydrophobic blocking layer on an inner side surface of the through portion. The hydrophobic blocking layer includes an oxide of a metal material of the metal layer.

公开(公告)号：US11217130B2

公开(公告)日：2022-01-04

申请号：US16507225

申请日：2019-07-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jiho Moon ,  Dae Youn Cho ,  Jongwoo Park ,  Ju Hee Lee ,  Youngtae Choi

IPC: G09G3/00 ,  H01L27/32 ,  G09G3/3225

Abstract: A wiring-disconnection detecting circuit includes a low-power voltage supply, a monitoring wiring, and a wiring-disconnection determiner. The low-power voltage supply supplies a low-power voltage to a low-power voltage wiring that extends along a periphery of a display panel in a normal operating mode of the display panel and supplies a test voltage to the low-power voltage wiring in a wiring-disconnection detecting mode of the display panel. The monitoring wiring includes a first end connected to one point of the low-power voltage wiring and a second end at which a feedback voltage corresponding to the test voltage is output in the wiring-disconnection detecting mode. The wiring-disconnection determiner receives the feedback voltage from the second end, measures an RC delay of the feedback voltage, and determines that the low-power voltage wiring is disconnected when the RC delay is larger than a predetermined reference value.

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：US11475850B2

公开(公告)日：2022-10-18

申请号：US17393773

申请日：2021-08-04

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Daeyoun Cho ,  Jongwoo Park ,  Jiho Moon ,  Youngtae Choi

IPC: G09G3/3291

Abstract: A display apparatus includes a display panel, a first emission driver, a second emission driver, and an emission driver controller. The first and second emission drivers are on different sides of the display panel, and each applies an emission signal to the display panel. The emission driver controller selectively drives the first emission driver and the second emission driver based on deterioration stress of the first and second emission drivers.

公开(公告)号：US10964239B2

公开(公告)日：2021-03-30

申请号：US16391802

申请日：2019-04-23

Applicant: Samsung Display Co., Ltd.

Inventor： Daeyoun Cho ,  Sangkil Kim ,  Hyunho Kim ,  Young-joo Noh ,  Jongwoo Park ,  Jongwon Lee ,  Juhee Lee ,  Youngtae Choi

IPC: G01R31/02 ,  G09G3/00 ,  G09G3/3225

Abstract: A lighting test device for a display panel includes: a connection part including a first connection test pad, a second connection test pad and a plurality of test pads, which are arranged at an end of the connection part, where the connection part is allowed to be connected to the display panel through the first connection test pad, the second connection test pad and the test pads; and a test circuit which outputs a connection test signal to the first connection test pad, receives a feedback signal through the second connection test pad, and adjusts voltage levels of test signals to be applied to the test pads based on the connection test signal and the feedback signal.

公开(公告)号：US10777771B2

公开(公告)日：2020-09-15

申请号：US16557077

申请日：2019-08-30

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Juhee Lee ,  Jongwoo Park ,  Youngtae Choi ,  Daeyoun Cho

IPC: H01L51/52 ,  H01L27/32 ,  G09G3/3283 ,  G09G3/3266

Abstract: A display apparatus includes a substrate, a display area including a plurality of pixels, a non-display area outside the display area, a first dam surrounding the display area, a second dam surrounding the first dam, a third dam between the display area and the first dam. The third dam including a first insulating layer and a second insulating layer on the first insulating layer, and a thin film encapsulation layer covering the display area, the thin film encapsulation layer including at least one inorganic encapsulation layer and at least one organic encapsulation layer. The third dam includes a first region in which the second insulating layer is spaced along a direction in which the first insulating layer extends, and a second region in which the second insulating layer is continuously present along the direction in which the first insulating layer extends, the second region not overlapping the first region.

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：US11925053B2

公开(公告)日：2024-03-05

申请号：US17365909

申请日：2021-07-01

Applicant: Samsung Display Co., Ltd.

Inventor： Hyojung Kim ,  Jungmin Park ,  Jongwoo Park ,  Daeyoun Cho ,  Junehwan Kim ,  Youngjoo Noh ,  Sora Bak ,  Youngtae Choi

IPC: H10K50/844 ,  H10K59/12 ,  H10K71/00 ,  H10K77/10

CPC classification number: H10K50/844 ,  H10K71/00 ,  H10K77/111 ,  H10K59/12 ,  H10K59/1201

Abstract: A display apparatus includes a first substrate including a polymer resin, a protective layer on the first substrate, the protective layer including at least one selected from SiOCH, SiOC, SiOF, aromatic amine, diazonium tetrafluoroborate, and an aromatic diazonium compound, and a buffer layer on the protective layer, the buffer layer including a material different from a material included in the protective layer.