公开(公告)号：US11455952B2

公开(公告)日：2022-09-27

申请号：US17084142

申请日：2020-10-29

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Keunwoo Kim ,  Doona Kim ,  Sangsub Kim ,  Dokyeong Lee ,  Jaehwan Chu

IPC: G09G3/3233 ,  H01L51/00 ,  H01L27/32

Abstract: A display apparatus includes a first thin-film transistor including a semiconductor layer arranged on a substrate, a driving gate electrode arranged on the semiconductor layer, and a first electrode arranged between the substrate and the semiconductor layer, a second thin-film transistor transmitting a data signal received through a data line to the first thin-film transistor according to a first scan signal received through a first scan line, and a third thin-film transistor transmitting a first voltage to the first electrode according to a second scan signal received through a second scan line.

公开(公告)号：US11423833B2

公开(公告)日：2022-08-23

申请号：US17129689

申请日：2020-12-21

Applicant: Samsung Display Co., Ltd.

Inventor： Keunwoo Kim

IPC: G09G3/3233 ,  H01L27/32

Abstract: A pixel circuit includes a first scan thin-film transistor (TFT) receiving a first data voltage, a first storage capacitor maintaining a first gate voltage corresponding to the first data voltage, a first driving TFT having a gate connected to the first storage capacitor and controlling the amount of a first driving current based on the first gate voltage, a first light-emitting device emitting light according to the first driving current, a second scan TFT receiving a second data voltage in response to an emission control signal, a second driving TFT having a gate connected to the gate of the first driving TFT and a source receiving the second data voltage and controlling the amount of a second driving current based on a difference between the first gate voltage and the second data voltage, and a second light-emitting device emitting light according to the second driving current.

公开(公告)号：US20210288123A1

公开(公告)日：2021-09-16

申请号：US17134595

申请日：2020-12-28

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Keunwoo Kim ,  Taewook Kang ,  Doona Kim ,  Bummo Sung ,  Dokyeong Lee ,  Jaehwan Chu

IPC: H01L27/32 ,  H01L29/786

Abstract: A thin-film transistor substrate includes a semiconductor layer disposed on a substrate, a gate insulating layer disposed on the semiconductor layer, a first electrode that at least partly overlaps the semiconductor layer, wherein the gate insulating layer is disposed between the first electrode and the semiconductor layer, a plurality of thin-film layers disposed on the first electrode, and a second electrode that at least partly overlaps the first electrode, wherein the plurality of thin-film layers are disposed between the second electrode and the first electrode, wherein at least one of the plurality of thin-film layers includes amorphous silicon.

公开(公告)号：US10467972B2

公开(公告)日：2019-11-05

申请号：US14996250

申请日：2016-01-15

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Keunwoo Kim

IPC: G09G5/00 ,  G09G3/36

Abstract: A display device includes a data driver connected to j- and (j+1)-th data lines, a scan driver connected to i- and (i+1)-th scan lines, and a display panel including k- and (k+1)-th pixel units. The k-th pixel unit includes an i-th transistor with a gate electrode connected to the i-th scan line, a first electrode connected to the j-th data line, and a second electrode connected to an i-th pixel electrode. The (k+1)-th pixel unit includes an (i+1)-th transistor having a gate electrode connected to the (i+1)-th scan line, a first electrode connected to the j-th data line, and a second electrode connected to an (i+1)-th pixel electrode. The i- and (i+1)-th transistors are turned on at a same time, and a kickback voltage of the i-th transistor is less than a kickback voltage of the (i+1)-th transistor.

公开(公告)号：US10311816B2

公开(公告)日：2019-06-04

申请号：US15240971

申请日：2016-08-18

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Keunwoo Kim

IPC: G09G3/36 ,  G11C19/28

Abstract: A gate driving circuit including a plurality of stages to respectively output gate signals to gate lines and connected to each other in cascade, an ith stage from among the plurality of stages including: a first output unit to generate a gate signal from a clock signal received at an input terminal; a first control unit to control the potential of a first node; a first pull-down unit to provide a first low voltage to a gate output terminal to drop down the gate signal, the first low voltage being lower than a gate off voltage of the gate signal; a first holding unit and a stabilization unit, each to provide a second low voltage having a higher level than that of the first low voltage to the gate output terminal; and a second control unit to control an operation of the first holding unit.

公开(公告)号：US09934751B2

公开(公告)日：2018-04-03

申请号：US15238552

申请日：2016-08-16

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Keunwoo Kim

IPC: G09G3/36 ,  H01L27/12 ,  H01L29/786

CPC classification number: G09G3/3688 ,  G09G3/3677 ,  G09G2300/0413 ,  G09G2300/0426 ,  G09G2300/0452 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/0209 ,  G09G2320/0261 ,  G09G2330/021 ,  G11C19/287 ,  H01L27/1222 ,  H01L27/124 ,  H01L27/1255 ,  H01L29/78669 ,  H01L29/7869

Abstract: A display device includes a display panel, a gate driving circuit, and an image determination unit. The gate driving circuit includes a double gate transistor. The image determination unit outputs an image determination signal to a second control electrode of the double gate transistor. When the display panel displays a still image, the double gate transistor is turned on by the image determination signal so that each of gate signals outputted from stages connected in cascade to a stage including the double gate transistor among stages included in the gate driving circuit has a gate-off voltage.

公开(公告)号：US12262589B2

公开(公告)日：2025-03-25

申请号：US17079765

申请日：2020-10-26

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Keunwoo Kim ,  Hyena Kwak ,  Sangsub Kim ,  Hanbit Kim

IPC: H10K59/121 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  H10K59/131

Abstract: A pixel includes: a driving transistor including a semiconductor layer and a gate electrode; and a compensation transistor connected to the gate electrode and the semiconductor layer of the driving transistor, wherein the first thin-film transistor includes: a first sub-transistor including a first gate electrode receiving a first scan signal having a first voltage level during a period; and a second sub-transistor connected to the first sub-transistor in parallel and comprising a second gate electrode receiving a second scan signal having a second voltage level that is an inverted level of the first voltage level during the same period.

公开(公告)号：US12010872B2

公开(公告)日：2024-06-11

申请号：US17526343

申请日：2021-11-15

Applicant: Samsung Display Co., Ltd.

Inventor： Keunwoo Kim

IPC: H01L27/14 ,  H10K59/121 ,  H10K71/00 ,  H01L27/12 ,  H01L29/49 ,  H01L29/786 ,  H10K59/12

CPC classification number: H10K59/1213 ,  H10K71/00 ,  H01L27/1222 ,  H01L29/4908 ,  H01L29/78645 ,  H01L29/78675 ,  H10K59/1201

Abstract: A display device may include a substrate, a first active layer disposed on the substrate and including a first source region, a first drain region, and a first channel region disposed between the first source region and the first drain region, a first gate insulating layer covering the first active layer on the substrate, first gate electrodes disposed in opposite sides of the first channel region on the first gate insulating layer, a second gate insulating layer covering the first gate electrodes on the first gate insulating layer, a second gate electrode disposed in a central portion of the first channel region on the second gate insulating layer, and a first connection electrode disposed on the second gate electrode and connected to the first and second gate electrodes.

公开(公告)号：US11974474B2

公开(公告)日：2024-04-30

申请号：US17158362

申请日：2021-01-26

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jaehwan Chu ,  Keunwoo Kim ,  Taewook Kang ,  Doona Kim ,  Sangsub Kim ,  Bummo Sung ,  Dokyeong Lee ,  Yongsu Lee

IPC: H01L27/32 ,  G09G3/3233 ,  H10K59/131

CPC classification number: H10K59/131 ,  G09G3/3233

Abstract: An organic light-emitting display apparatus includes an organic light-emitting diode, a driving transistor configured to control an amount of electric current flowing to the organic light-emitting diode from a power line, a compensation transistor configured to diode-connect the driving transistor in response to a voltage applied to first and second compensation gate electrodes of the compensation transistor, and a gate insulating layer between the compensation gate electrodes and a compensation active region of a compensation transistor. A layer structure of the gate insulating layer between the first compensation gate electrode and the compensation active region is different from a layer structure of the gate insulating layer between the second compensation gate electrode and the compensation active region.

公开(公告)号：US11869414B2

公开(公告)日：2024-01-09

申请号：US17669887

申请日：2022-02-11

Applicant: Samsung Display Co., Ltd.

Inventor： Keunwoo Kim

IPC: G09G3/3233 ,  G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0256 ,  G09G2320/0257 ,  G09G2320/043

Abstract: A panel repairing method includes detecting a defective portion of a panel, providing primary ink, which is ejected from an ink ejection pin, onto a first portion of the defective portion, spreading the primary ink in a direction parallel to a plane defined on the panel, temporarily curing the primary ink, providing secondary ink, which is ejected from the ink ejection pin, onto a second portion of the defective portion disposed adjacent to the first portion, and curing the primary ink and the secondary ink.