公开(公告)号：US20200058241A1

公开(公告)日：2020-02-20

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 ,  G09G3/3225 ,  H01L27/32

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：US20210074801A1

公开(公告)日：2021-03-11

申请号：US17101584

申请日：2020-11-23

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ju Hee LEE ,  Jongwoo PARK ,  Youngtae CHOI ,  Dae Youn CHO

IPC: H01L27/32 ,  H01L51/00

Abstract: A display apparatus includes a substrate; a lower conductive layer including a protective pattern and an auxiliary conductive pattern on the substrate; a buffer layer on the lower conductive layer; an active pattern on the buffer layer and overlapping the protective pattern; a first insulation layer on the active pattern; and a first conductive layer on the first insulation layer, the first conductive layer including a gate electrode overlapping the active pattern and a load matching line overlapping the auxiliary conductive pattern.

公开(公告)号：US20210201795A1

公开(公告)日：2021-07-01

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: 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：US20200152881A1

公开(公告)日：2020-05-14

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: H01L51/00 ,  H01L27/32 ,  G01R31/26

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：US20210328184A1

公开(公告)日：2021-10-21

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: H01L51/52 ,  H01L51/00 ,  H01L51/56

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：US20200044008A1

公开(公告)日：2020-02-06

申请号：US16513316

申请日：2019-07-16

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ju Hee LEE ,  Jongwoo PARK ,  Youngtae CHOI ,  Dae Youn CHO

IPC: H01L27/32 ,  H01L51/00

Abstract: A display apparatus includes a substrate; a lower conductive layer including a protective pattern and an auxiliary conductive pattern on the substrate; a buffer layer on the lower conductive layer; an active pattern on the buffer layer and overlapping the protective pattern; a first insulation layer on the active pattern; and a first conductive layer on the first insulation layer, the first conductive layer including a gate electrode overlapping the active pattern and a load matching line overlapping the auxiliary conductive pattern.

公开(公告)号：US20190392741A1

公开(公告)日：2019-12-26

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: 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：US20230165084A1

公开(公告)日：2023-05-25

申请号：US17990847

申请日：2022-11-21

Applicant: Samsung Display Co., Ltd.

Inventor： Daeyoun CHO ,  Jongwoo PARK ,  Youngtae CHOI ,  Sangkil KIM ,  Jiho MOON

IPC: H10K59/131 ,  H10K59/126

CPC classification number: H01L27/3276 ,  H01L27/3272

Abstract: A display apparatus includes a metal plate including an indentation portion indented inward from a side of the metal plate, and a display panel located on the metal plate. The display panel includes a substrate including a display area and a peripheral area surrounding at least part of the display area, a metal wiring located on the substrate, and including a first portion overlapping or adjacent to the indentation portion in a plan view, a gate driving part located on the substrate, overlapping the metal plate in a plan view, and located adjacent to the metal wiring, and a shielding portion located between the substrate and the metal wiring, and overlapping at least a part of the indentation portion in a plan view.

公开(公告)号：US20200185647A1

公开(公告)日：2020-06-11

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 ,  G09G3/3266 ,  G09G3/3283

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：US20200035136A1

公开(公告)日：2020-01-30

申请号：US16522279

申请日：2019-07-25

Applicant: Samsung Display Co., Ltd.

Inventor： Dae Youn CHO ,  Hyunho KIM ,  Hyojung KIM ,  Young-Joo NOH ,  Jongwoo PARK ,  Ju Hee LEE ,  Jinwoo CHAE ,  Youngtae CHOI

IPC: G09G3/00 ,  G09G3/3225 ,  G09G3/20 ,  G01R31/26

Abstract: An inspection system for a display cell having a display part and a plurality of data lines connected to first and second pixel units of the display part. An array test part and a lighting test part are located in a peripheral area around the display part. An inspection apparatus is configured to provide the array test part with an array control signal to block an array data signal from being applied to a plurality of data lines in a period in which a white image is displayed and to provide the lighting test part with a lighting control signal to block a lighting data signal from being applied to a plurality of data lines during a period in which a black image is displayed, during a drive reliability test mode for displaying a test image including the black image and the white image.