公开(公告)号：US11538422B2

公开(公告)日：2022-12-27

申请号：US17463518

申请日：2021-08-31

Applicant: Samsung Display Co., LTD.

Inventor： Wonjun Lee ,  Mihyeon Jo ,  Cholho Kim

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

Abstract: A pixel of a light emitting display device includes: a switching transistor which transfers a data voltage in response to a gate writing signal, a storage capacitor which stores a storage voltage, a driving transistor which generates a driving current based on the storage voltage stored in the storage capacitor, an emission transistor which selectively forms a path of the driving current in response to an emission signal, a light emitting diode which emits light based on the driving current, and a diode initialization transistor which transfers an initialization voltage to the light emitting diode in response to the emission signal. The storage voltage corresponds to a value obtained by subtracting a threshold voltage of the driving transistor from the data voltage.

公开(公告)号：US10755645B2

公开(公告)日：2020-08-25

申请号：US16351136

申请日：2019-03-12

Applicant: Samsung Display Co., Ltd.

Inventor： Hyo-Chul Lee ,  Cholho Kim ,  Hongbo Kim ,  Yoonjung Chai

IPC: G09G3/3266

Abstract: A scan driver includes: a blocking circuit configured to receive a scan control signal and to block the scan control signal lower than a predetermined first reference voltage and higher than a predetermined second reference voltage, wherein the second reference voltage is higher than the first reference voltage; and a plurality of stages configured to output scan signals in response to the scan control signal, wherein the blocking circuit includes: a first block circuit configured to block the scan control signal lower than the first reference voltage; and a second block circuit configured to block the scan control signal higher than the second reference voltage.

公开(公告)号：US10607547B2

公开(公告)日：2020-03-31

申请号：US16205499

申请日：2018-11-30

Applicant: Samsung Display Co., Ltd.

Inventor： Gunwoo Yang ,  Cholho Kim ,  Wonjun Lee

IPC: G09G3/3258 ,  G09G3/3233

Abstract: A display apparatus includes a voltage generator which generates an initial controlling signal which comprises a high voltage, a middle voltage and a low voltage, where the initial controlling signal swings from the middle voltage to the low voltage after a plurality of gate signals is simultaneously dropped from a high voltage to a low voltage thereof.

公开(公告)号：US10255845B2

公开(公告)日：2019-04-09

申请号：US15447748

申请日：2017-03-02

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Cholho Kim ,  Gunwoo Yang ,  Jihoon Yang ,  Yongwoo Lee ,  Hyunyoung Choi

IPC: G09G3/20

Abstract: An N-th stage of a gate driver includes a first control circuit, a gate signal generating circuit, a carry signal generating circuit, a second control circuit, a third control circuit, and a holding circuit. The first control circuit controls a first signal in response to a first input signal. The gate signal generating circuit generates a gate signal in response to a clock signal and the first signal. The carry signal generating circuit generates a carry signal in response to the clock signal and the first signal. The second control circuit controls the first signal in response to a second input signal. The third control circuit generates a hold control signal in response to a third input signal having a frequency lower than the clock signal's. The holding circuit maintains levels of the first signal, the gate signal, and the carry signal in response to the hold control signal.

公开(公告)号：US12272312B2

公开(公告)日：2025-04-08

申请号：US18200692

申请日：2023-05-23

Applicant: Samsung Display Co., Ltd.

Inventor： Wonjun Lee ,  Cholho Kim

IPC: G09G3/3258 ,  G09G3/3291

Abstract: A pixel including: a light emitting element; a first transistor including a first electrode, a second electrode electrically connected to the light emitting element, a gate electrode, and a body electrode; a second transistor connected between a first driving voltage line for receiving a first driving voltage and the first electrode of the first transistor and including a gate electrode for receiving a first emission control signal; a first circuit which provides a reference voltage to the gate electrode of the first transistor in response to a first scan signal and a second scan signal; and a second circuit which provides an initialization voltage to the body electrode of the first transistor in response to the first scan signal, the second scan signal, and a second emission control signal.

公开(公告)号：US10482823B2

公开(公告)日：2019-11-19

申请号：US15852773

申请日：2017-12-22

Applicant: Samsung Display Co., Ltd.

Inventor： Wonjun Lee ,  Gichang Lee ,  Cholho Kim ,  Gunwoo Yang

IPC: G09G3/3266 ,  G09G3/3291 ,  G09G3/20 ,  G09G3/3233

Abstract: A light emitting display device includes: a first switch connected between a data line and a first node and including a gate connected to a first scan line; a second switch connected between a first driving power line and a second node and including a gate electrode connected to the first node; a first capacitor connected between the first node and the second node; a light emitting element connected between the second node and a second driving power line; a scan driver applying a first A-scan signal and a first B-scan signal during different times to the first scan line; a data driver applying a first initialization signal and a data signal to the data line at different times; and a power supply portion applying a first driving voltage, a second driving voltage, and a third driving voltage to the first driving power line at different times.

公开(公告)号：US10185189B2

公开(公告)日：2019-01-22

申请号：US15055323

申请日：2016-02-26

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jihoon Yang ,  Myeongeon Kim ,  Cholho Kim ,  Keumdong Jung ,  Hyunyoung Choi

IPC: G02F1/1343 ,  G02F1/1362 ,  H01L27/12 ,  G02F1/1339

Abstract: A display device includes: a gate transmission wiring; a gate insulating layer disposed on the gate transmission wiring; and a pixel electrode and a data transmission wiring that are disposed on the gate insulating layer. When a gate signal voltage is applied to the gate transmission wiring, the gate transmission wiring may serve as a gate electrode that activates a semiconductor layer. In addition, when such a gate signal voltage is not applied thereto, the gate transmission wiring may form an electric field by a voltage difference between the gate transmission wiring and the pixel electrode, to thereby control a liquid crystal layer.

公开(公告)号：US10108061B2

公开(公告)日：2018-10-23

申请号：US15134869

申请日：2016-04-21

Applicant: Samsung Display Co., Ltd.

Inventor： Keumdong Jung ,  Daecheol Kim ,  Seongyoung Lee ,  Cholho Kim ,  Jihoon Yang ,  Hyunyoung Choi

IPC: G02F1/1343 ,  G02F1/1362 ,  G02F1/1333 ,  G02F1/1368 ,  H01L27/12 ,  H01L29/417 ,  H01L29/94 ,  H01L31/10

Abstract: A thin-film transistor (TFT) array substrate includes a transistor disposed on a base substrate and a storage capacitor electrically connected to the transistor. The transistor includes a gate electrode, an active layer electrically insulated from the gate electrode, the active layer including a semiconductor material, and a first electrode and a second electrode disposed to be spaced apart from each other on the active layer. The storage capacitor includes a lower electrode including a light inflow path, and an upper electrode disposed to face the lower electrode and electrically connected to the second electrode.