公开(公告)号：US20200327850A1

公开(公告)日：2020-10-15

申请号：US16813982

申请日：2020-03-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Dae Youn Cho ,  Ji Ho Moon ,  Jong Woo Park ,  Young Tae Choi

IPC: G09G3/32

Abstract: A pixel includes a light emitting device, a first transistor for controlling an amount of current flowing from a first power source to a second power source via the light emitting device, in response to a voltage applied to a first node, a second transistor coupled between a data line and a second node corresponding to a first electrode of the first transistor, and including a gate electrode coupled to a first scan line, a third transistor coupled between the first node and a third node corresponding to a second electrode of the first transistor, and including a gate electrode coupled to the first scan line, and a fourth transistor coupled between the third transistor and the third node, and configured to maintain a turn-on state.

公开(公告)号：US10553725B2

公开(公告)日：2020-02-04

申请号：US16100350

申请日：2018-08-10

Applicant: SAMSUNG DISPLAY CO., LTD. ,  CHUNG ANG University Industry Academic Cooperation Foundation

Inventor： Tae Young Kim ,  Jong Woo Park ,  Hyuck-In Kwon ,  Dae-Hwan Kim ,  Hee-Joong Kim ,  Sae-Young Hong

IPC: H01L29/786 ,  H01L27/32 ,  H01L27/088 ,  H01L25/07 ,  G09G3/3291 ,  G09G3/3233 ,  H01L29/423 ,  G09G3/3266 ,  H01L29/78

Abstract: A vertical stack transistor includes: a first transistor and a second transistor, located in a vertical direction, wherein the first transistor includes a first gate electrode, a first insulating layer, a first electrode, a first channel, and a second electrode, which are sequentially stacked in the vertical direction, and the second transistor includes a second gate electrode, a second insulating layer, a third electrode, a second channel, and a fourth electrode, which are sequentially stacked in the vertical direction, wherein the second gate electrode and the second electrode are the same electrode.

公开(公告)号：US12223901B2

公开(公告)日：2025-02-11

申请号：US18301726

申请日：2023-04-17

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Dae Youn Cho ,  Jong Woo Park ,  Jun Seok Oh ,  Yoon Suk Choi ,  Young Tae Choi

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

Abstract: A pixel of a display device may pre-charge a light emitting element in non-emission periods immediately before emission periods by varying a voltage level of an initialization voltage. As a result, a luminance non-uniformity phenomenon that may occur as the result of a deterioration deviation of the light emitting element may be removed or reduced.

公开(公告)号：US11672163B2

公开(公告)日：2023-06-06

申请号：US16799906

申请日：2020-02-25

Applicant: Samsung Display Co., LTD.

Inventor： Min Chul Song ,  Jong Woo Park ,  Kyung Hae Lee ,  Sang Won Jeong

IPC: H01L51/56 ,  H01L51/00

CPC classification number: H01L51/0026 ,  H01L51/56

Abstract: An apparatus for manufacturing a display device, includes: a heater which generates heat; a pressing member which contacts a target object of a display device to transfer the heat to the target object; a body connected to each of the heater and the pressing member and through which the heat from the heater is provided to the pressing member; and a first housing cover extended from the body to surround the pressing member and the body in a plan view. Engagement of the first housing cover with the target object defines an internal space of the first housing cover having a temperature, and measurement by the apparatus, of the temperature of the internal space, controls bonding of layers of the target object to each other.

公开(公告)号：US11538879B2

公开(公告)日：2022-12-27

申请号：US16952787

申请日：2020-11-19

Applicant: Samsung Display Co., LTD.

Inventor： June Hwan Kim ,  Tae Young Kim ,  Jong Woo Park ,  Ki Ju Im ,  Ji Ho Moon ,  Hyun Cheol Hwang

IPC: H01L29/08 ,  H01L27/32 ,  G09G3/3233 ,  H01L51/56 ,  H01L29/66 ,  H01L27/12 ,  H01L29/786

Abstract: A display device includes an organic light emitting diode, a first transistor driving the organic light emitting diode, a second transistor transmitting a data signal to the first transistor, a third transistor transmitting a first power voltage to the first transistor, wherein a semiconductor pattern of the first transistor is disposed over a semiconductor pattern of the second transistor, a semiconductor pattern of the third transistor is disposed over the semiconductor pattern of the first transistor, a lower transistor insulating film is disposed between the semiconductor pattern of the first transistor and the semiconductor pattern of the second transistor, and an upper transistor insulating film is disposed between the semiconductor pattern of the first transistor and the semiconductor pattern of the third transistor.

公开(公告)号：US11528805B2

公开(公告)日：2022-12-13

申请号：US17158678

申请日：2021-01-26

Applicant: Samsung Display Co., LTD.

Inventor： Chang Woo Byun ,  Jong Woo Park ,  Shangu Kim ,  Young Tae Choi

IPC: H05K1/11 ,  H05K3/32 ,  G02F1/1345 ,  H01R12/62

Abstract: A display device includes a substrate including a display area and a non-display area adjacent to the display area, lower pads disposed in the non-display area of the substrate and spaced apart from each other, upper pads disposed on the lower pads and spaced apart from each other, an anisotropic conductive film disposed between the lower pads and the upper pads, and a circuit film disposed on the upper pads, the circuit film including first lower holes disposed between the upper pads in a plan view, and first upper holes connected to the first lower holes and having radiuses larger than radiuses of the first lower holes. The first upper holes form first openings on an upper surface of the circuit film. A method of manufacturing the display device is provided.

公开(公告)号：US20210134227A1

公开(公告)日：2021-05-06

申请号：US16869482

申请日：2020-05-07

Applicant: Samsung Display Co., Ltd.

Inventor： Ki Ju Im ,  Jong Woo Park ,  Hyun Cheol Hwang

IPC: G09G3/3266

Abstract: A method of operating a display device may include the following steps: in a first frame period, before turning off a gate initialization transistor, changing an initialization voltage from a first level to a second level and subsequently returning the initialization voltage to the first level; in a second frame period, before turning off the gate initialization transistor, changing the initialization voltage from the first level to the second level and/or a third level and subsequently returning the initialization voltage to the first level. The display device may include the gate initialization transistor and a driving transistor. A first electrode the gate initialization transistor may receive the initialization voltage. A second electrode of the gate initialization transistor may be electrically connected to a gate electrode of the driving transistor. The first level, the second level, and the third level may be unequal to each other.

公开(公告)号：US20200258453A1

公开(公告)日：2020-08-13

申请号：US16786045

申请日：2020-02-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Ju Im ,  Tae Young Kim ,  Hyo Jung Kim ,  Jong Woo Park ,  Young Tae Choi ,  Hyun Cheol Hwang

IPC: G09G3/3266 ,  G09G3/3233 ,  G09G3/3275 ,  H01L27/32

Abstract: A display device includes: a substrate; a gate pattern disposed on the substrate; an oxide semiconductor layer disposed on the substrate, the oxide semiconductor layer includes a channel region that overlaps with the gate pattern; and an insulating film disposed on the gate pattern, the insulating film includes majority carrier supporting ions, wherein the gate pattern includes a plurality of gate holes, wherein the gate holes are formed inside a region of the gate pattern that does not overlap with the channel region of the oxide semiconductor layer, and wherein the channel region of the oxide semiconductor layer includes the majority carrier supporting ions.

公开(公告)号：US20190392758A1

公开(公告)日：2019-12-26

申请号：US16358700

申请日：2019-03-20

Applicant: Samsung Display Co., Ltd.

Inventor： Tae Young Kim ,  Jong Woo Park ,  Hyo Jung Kim ,  Ki Ju Im ,  Young Tae Choi

IPC: G09G3/3233 ,  G09G3/3291 ,  G09G3/3266 ,  H01L29/78 ,  H01L27/32

Abstract: A display device including an emitting element. A first transistor includes a first electrode electrically connected to a first supply voltage line, a second electrode electrically connected to the emitting element, and a gate electrode receiving a data signal, the first transistor being configured to transfer a driving current to the emitting element based on the data signal. A capacitor is connected between the gate electrode of the first transistor and the first supply voltage line. An electric field generating element is connected between the second electrode of the first transistor and the gate electrode of the first transistor and includes ferroelectrics.

公开(公告)号：US11922841B2

公开(公告)日：2024-03-05

申请号：US17950174

申请日：2022-09-22

Applicant: Samsung Display Co., Ltd.

Inventor： Yoon Ho Kim ,  Jong Woo Park ,  June Hwan Kim ,  Ki Ju Im ,  Young Tae Choi ,  Hyuncheol Hwang

IPC: G09G3/00 ,  H01L27/12

CPC classification number: G09G3/006 ,  H01L27/124 ,  G09G2300/0426 ,  G09G2330/12

Abstract: The present disclosure relates to a display device, and the display device according to an embodiment includes: a substrate including a display area and a peripheral area; a plurality of light-emitting elements positioned in a display area; a plurality of pixel circuits connected to a plurality of light-emitting elements, respectively; a sensor positioned on the peripheral area of the substrate; a leakage current detecting circuit connected to the sensor; and a light emitting wiring connected to the leakage current detecting circuit and connected to at least one of the plurality of light-emitting elements, wherein the sensor includes a first sensor and the first sensor includes a first sensing transistor, and a first conductive pattern spaced apart from the channel of the first sensing transistor, and the first conductive pattern is positioned in the same layer as at least one of a plurality of layers configuring the transistor.