公开(公告)号：US11848330B2

公开(公告)日：2023-12-19

申请号：US16875770

申请日：2020-05-15

Applicant: Samsung Display Co., Ltd.

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

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

CPC classification number: H01L27/1237 ,  H01L27/1218 ,  H01L27/1255 ,  H01L29/7869 ,  H01L29/78675 ,  H10K59/1213 ,  H10K59/1216

Abstract: A display device is provided. The display device comprises a substrate, a first buffer layer on the substrate, a first semiconductor layer on the first buffer layer and including a first active layer, a first gate insulating layer on the first semiconductor layer and the first buffer layer and covering the first active layer, a first conductive layer on the first gate insulating layer and including a first gate electrode, a second conductive layer on the first conductive layer and including a first source/drain electrode, a first interlayer insulating layer on the first conductive layer, a second semiconductor layer on the first interlayer insulating layer and including a second active layer, a second gate insulating layer on the second semiconductor layer and covering the second active layer, and a third conductive layer on the second gate insulating layer and including a second gate electrode and a second source/drain electrode, wherein the first gate insulating layer and the second gate insulating layer include different insulating materials.

公开(公告)号：US20220157924A1

公开(公告)日：2022-05-19

申请号：US17397916

申请日：2021-08-09

Applicant: Samsung Display Co., Ltd.

Inventor： June Hwan Kim ,  Yoonho Kim ,  Tae Young Kim ,  Jongwoo Park

IPC: H01L27/32

Abstract: A display device may include a driving transistor disposed in a display area, a test transistor disposed in a peripheral area adjacent to the display area, and a resistance line disposed in the peripheral area, electrically connected to the test transistor and including a metal oxide.

公开(公告)号：US11308874B2

公开(公告)日：2022-04-19

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 ,  G09G3/3266 ,  H01L29/78 ,  G09G3/3291 ,  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：US11024699B2

公开(公告)日：2021-06-01

申请号：US16509455

申请日：2019-07-11

Applicant: Samsung Display Co., Ltd.

Inventor： Tae Young Kim ,  Jongwoo Park ,  Youn Jae Jung ,  Hyojung Kim

IPC: H01L27/32 ,  H01L51/52 ,  H01L51/50

Abstract: A display device may include an insulation layer, a wire directly contacting the insulation layer, a first electrode overlapping the insulation layer, an organic light emitting layer positioned on the first electrode, and a second electrode positioned on the organic light emitting layer. The wire may include an aluminum alloy that includes at least one of copper, vanadium, and silicon. The first electrode may include silver.

公开(公告)号：US20190213958A1

公开(公告)日：2019-07-11

申请号：US16240515

申请日：2019-01-04

Applicant: Samsung Display Co., Ltd.

Inventor： Dae Youn Cho ,  Tae Young Kim ,  Hee Jin Kim ,  Jong Woo Park ,  Young Tae Choi

IPC: G09G3/3291 ,  G09G3/3266 ,  G09G3/3233 ,  G09G3/3258 ,  H01L27/32

Abstract: An organic light-emitting display device includes a display unit having a plurality of pixel units. The display device also includes a timing controller for calculating a black bias pixel ratio (BBPR) of the display unit based on image signals provided by an external source and for generating a control signal based on the BBPR. The BBPR is the ratio of a number of pixel units in a black state to a total number of pixel units. A power supply unit provides a driving voltage to the display unit based on the control signal from the timing controller, wherein the power supply unit provides a first driving voltage to the display unit when the BBPR is less than a reference value and provides a second driving voltage, which is higher than the first driving voltage, otherwise.

公开(公告)号：US20210256906A1

公开(公告)日：2021-08-19

申请号：US17226817

申请日：2021-04-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyo Jung Kim ,  Tae Young Kim ,  Yong Sung Park ,  Jong Woo Park ,  Mi Seon Seo ,  Keun Soo Lee ,  Ki Ju Im ,  Dae Youn Cho ,  Young Tae Choi ,  Hyun Cheol Hwang

IPC: G09G3/3233 ,  H01L27/32

Abstract: A display device includes a plurality of pixels. Each pixel includes a first transistor that controls an amount of current received from a first power supply voltage line connected via a second node to an organic light emitting diode in response to a voltage of a first node, a second transistor connected between a data line and the second node and that includes a first gate electrode connected to a first scan line, a light emitting line connected to a gate electrode of at least one light emitting transistor located in a current path between the first power supply voltage line and the organic light emitting diode, and a seventh transistor connected between one of at least one second gate electrode of the second transistor and the light emitting line. Accordingly, a threshold voltage of a switching transistor included in each of the plurality of pixels may be negatively shifted.

公开(公告)号：US10804329B2

公开(公告)日：2020-10-13

申请号：US16287389

申请日：2019-02-27

Applicant: Samsung Display Co., Ltd.

Inventor： June Hwan Kim ,  Tae Young Kim ,  Hyo Jung Kim

IPC: G09G3/3225 ,  H01L27/32

Abstract: A display device may include a first pixel including a first transistor, and a first light emitting element on and electrically connected to the first transistor, a second pixel adjacent the first pixel, the second pixel including a second transistor, and a second light emitting element on and electrically connected to the second transistor, and a reflective member at a layer that is above the first pixel and the second pixel, the reflective member being configured to reflect a light emitted from the second light emitting element to the first transistor.

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.