公开(公告)号：US20250160122A1

公开(公告)日：2025-05-15

申请号：US18788505

申请日：2024-07-30

Applicant: Samsung Display Co., Ltd.

Inventor： Keunwoo Kim ,  Sangsub Kim ,  Bummo Sung ,  Kyoungseok Son ,  Hyuneok Shin ,  Sunhee Lee ,  Sanggun Choi ,  Taehyun Hong

IPC: H10K59/121 ,  H10K59/12

Abstract: Provided is a display apparatus including a substrate, a first semiconductor layer disposed on the substrate and including a first active portion, a second active portion, and a first doped portion, a first conductive layer including a first conductive pattern overlapping the first active portion, a second conductive layer including a second conductive pattern and a third conductive pattern, the second conductive pattern overlapping the first conductive pattern, and the third conductive pattern connected to the first doped portion through a first contact hole, a second semiconductor layer disposed on the second conductive layer, and including an upper-first active portion and a second doped portion, a third conductive layer including a first conductive line overlapping the upper-first active portion, and a fourth conductive layer including a fourth conductive pattern electrically connecting the third conductive pattern to the second doped portion.

公开(公告)号：US12274129B2

公开(公告)日：2025-04-08

申请号：US18413059

申请日：2024-01-16

Applicant: Samsung Display Co., Ltd.

Inventor： Keunwoo Kim

IPC: H01L27/14 ,  H10K59/121 ,  H01L27/12 ,  H01L29/66 ,  H01L29/786 ,  H10K59/12

Abstract: Provided are a thin-film transistor substrate that has enhanced electrical characteristics, such as off-current characteristics of a thin-film transistor, without increasing the number of mask processes, a display apparatus, and a method of manufacturing the thin-film transistor substrate. The thin-film transistor substrate includes: a semiconductor layer including a first conductive region, a second conductive region, and a first semiconductor region; a lower electrode disposed on the semiconductor layer and at least partially overlapping the first semiconductor region; and an upper electrode disposed on the lower electrode and at least partially overlapping the first semiconductor region, a first boundary between the first semiconductor region and the first conductive region coincides with an edge of the upper electrode, and a second boundary between the first semiconductor region and the second conductive region coincides with an edge of the lower electrode or an edge of the upper electrode.

公开(公告)号：US11758755B2

公开(公告)日：2023-09-12

申请号：US17228586

申请日：2021-04-12

Applicant: Samsung Display Co., Ltd.

Inventor： Keunwoo Kim ,  Hyena Kwak ,  Taewook Kang ,  Jiyeong Shin ,  Jaeseob Lee

IPC: H01L27/12 ,  G02F1/13 ,  H10K50/844 ,  G02F1/1333 ,  H10K50/816 ,  H10K50/828 ,  H10K50/842 ,  H10K59/35 ,  H10K59/126 ,  H10K102/00

CPC classification number: H10K50/844 ,  G02F1/133334 ,  G09G2300/0408 ,  G09G2300/0804 ,  H10K50/816 ,  H10K50/828 ,  H10K50/8426 ,  H10K59/126 ,  H10K59/35 ,  H10K2102/00 ,  H10K2102/351

Abstract: A display device includes: a base substrate including a first polymeric film; an active pattern on the base substrate and including a first channel region; and a first gate electrode overlapping the first channel region, wherein the first polymeric film has a first thickness in a first area overlapping the first channel region and a second thickness, which is smaller than the first thickness, in a second area different from the first area.

公开(公告)号：US11715421B2

公开(公告)日：2023-08-01

申请号：US17939721

申请日：2022-09-07

Applicant: Samsung Display Co., Ltd.

Inventor： Keunwoo Kim

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2330/021

Abstract: A pixel includes an organic light emitting diode that is configured to output light based on a driving current, and includes a first terminal and a second terminal. A driving transistor is configured to generate the driving current, and includes a first terminal to which a first power supply voltage and a bias power supply voltage are applied, a second terminal connected to the first terminal of the organic light emitting diode, and a gate terminal to which a first initialization voltage is applied. The first dual gate transistor is connected between the gate terminal of the driving transistor and the second terminal of the driving transistor. The first switching transistor includes a first terminal to which the bias power supply voltage is applied, a second terminal connected to the first terminal of the driving transistor, and a gate terminal to which a light emitting diode initialization signal is applied.

公开(公告)号：US10275094B2

公开(公告)日：2019-04-30

申请号：US15715590

申请日：2017-09-26

Applicant: Samsung Display Co., Ltd.

Inventor： Keunwoo Kim ,  Sooyoung Park ,  Joonghyun Park

IPC: G06F3/042 ,  G06F3/041 ,  H01L27/144

Abstract: A photo sensor pixel includes a pixel circuit including a driving transistor, a switching transistor having a double gate structure and a photo sensing transistor connected in series with the switching transistor. The pixel circuit drives a light emitting element therein based on a data voltage provided thereto through a data line, the switching transistor includes a top gate electrode and a bottom gate electrode, which are connected to different gate lines, respectively, and the photo sensing transistor senses incident light.

公开(公告)号：US10176778B2

公开(公告)日：2019-01-08

申请号：US15261779

申请日：2016-09-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Keunwoo Kim

IPC: G09G3/36

Abstract: A k-th driving stage includes a first pull-down transistor. The first pull-down transistor includes a first control electrode receiving a second control signal activated after the k-th gate signal is output, a second control electrode receiving the switching signal synchronized with a clock signal, an input electrode receiving a first discharge voltage, and an output electrode connected to the output electrode of the first output transistor.

公开(公告)号：US12136391B2

公开(公告)日：2024-11-05

申请号：US17982931

申请日：2022-11-08

Applicant: Samsung Display Co., Ltd.

Inventor： Keunwoo Kim

IPC: G09G3/3233 ,  G09G3/30 ,  G09G3/32 ,  G09G3/3258

Abstract: A pixel circuit includes a light emitting element, a driving transistor which applies a driving current to the light emitting element, a write transistor which receives a write gate signal and a data voltage and is connected to a first electrode of the driving transistor, a first compensation transistor which receives a compensation gate signal and is connected to a second electrode of the driving transistor and a first electrode of a second compensation transistor, the second compensation transistor which receives the compensation gate signal, and is connected to the second electrode of the first compensation transistor and a control electrode of the driving transistor, a storage capacitor which receives a first power voltage and is connected to the control electrode of the driving transistor, and a node control transistor which receives the write gate signal and is connected to the second electrode of the first compensation transistor.

公开(公告)号：US12033546B2

公开(公告)日：2024-07-09

申请号：US18305156

申请日：2023-04-21

Applicant: Samsung Display Co., LTD.

Inventor： Keunwoo Kim ,  Taewook Kang

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0262 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0247

Abstract: A display apparatus includes: a light emitting element; a driving switching element to apply a driving current to the light emitting element; and a first compensation switching element and a second compensation switching element connected in series to each other between a control electrode of the driving switching element and an output electrode of the driving switching element. A control electrode of the first compensation switching element and a control electrode of the second compensation switching element are to receive a compensation gate signal, and a falling waveform of the compensation gate signal and a rising waveform of the compensation gate signal are asymmetrical to each other.

公开(公告)号：US11538413B1

公开(公告)日：2022-12-27

申请号：US17701935

申请日：2022-03-23

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Keunwoo Kim ,  Meejae Kang ,  Dokyeong Lee ,  Taewook Kang

IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3291

Abstract: A pixel includes a display element, a driving transistor which controls an amount of a driving current flowing toward the display element, a first capacitor connected to a gate of the driving transistor, a scan transistor which transfers a data voltage to a source of the driving transistor, first and second compensation transistors connected to each other in series between the gate and a drain of the driving transistor, first and second emission control transistors which generates a path of the driving current between the display element and a power line, and a second capacitor connected between a floating node between the first and second compensation transistors and a gate of the second emission control transistor.

公开(公告)号：US20220398978A1

公开(公告)日：2022-12-15

申请号：US17701935

申请日：2022-03-23

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Keunwoo Kim ,  Meejae Kang ,  Dokyeong Lee ,  Taewook Kang

IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3291

Abstract: A pixel includes a display element, a driving transistor which controls an amount of a driving current flowing toward the display element, a first capacitor connected to a gate of the driving transistor, a scan transistor which transfers a data voltage to a source of the driving transistor, first and second compensation transistors connected to each other in series between the gate and a drain of the driving transistor, first and second emission control transistors which generates a path of the driving current between the display element and a power line, and a second capacitor connected between a floating node between the first and second compensation transistors and a gate of the second emission control transistor.