公开(公告)号：US12080242B2

公开(公告)日：2024-09-03

申请号：US17749070

申请日：2022-05-19

Applicant: Samsung Display Co., LTD.

Inventor： Jun Ki Jeong

IPC: G09G3/3266 ,  G09G3/3225 ,  G09G3/3241 ,  G09G5/00 ,  G09G5/18 ,  G11C19/28

CPC classification number: G09G3/3266 ,  G09G3/3225 ,  G09G3/3241 ,  G09G5/008 ,  G09G5/18 ,  G09G2230/00 ,  G09G2300/0426 ,  G09G2300/08 ,  G09G2300/0842 ,  G09G2310/0202 ,  G09G2310/0216 ,  G09G2310/08 ,  G09G2320/0223 ,  G09G2320/0686 ,  G09G2330/021 ,  G09G2340/0435 ,  G09G2340/0442 ,  G11C19/28

Abstract: A display device includes a pixel unit including first pixels disposed in a first area and second pixels disposed in a second area, an emission driver configured to sequentially supply emission signals of a turn-off level to the first pixels and the second pixels based on a first start signal, a first clock signal, and a second clock signal, and a first scan driver configured to sequentially supply first scan signals of a turn-on level to the first pixels based on a second start signal, the first clock signal, and the second clock signal, and sequentially supply the first scan signals of the turn-on level to the second pixels based on a third start signal, the first clock signal, and the second clock signal.

公开(公告)号：US11887525B2

公开(公告)日：2024-01-30

申请号：US17810141

申请日：2022-06-30

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Hwan Hwang ,  Hyun Joon Kim ,  Kye Uk Lee ,  Jun Ki Jeong

IPC: G09G3/20 ,  G09G3/32

CPC classification number: G09G3/2011 ,  G09G3/32 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2310/027 ,  G09G2310/08 ,  G09G2320/0242

Abstract: A display device includes PAM data lines receiving PAM and PWM data voltages, and sub-pixels connected to the PAM and PWM data lines. A sub-pixel includes a light emitting element, a first pixel driver to supply a control current according to one of the PAM data voltages to a node, a second pixel driver to generate a driving current according to one of the PWM data voltages, and a third pixel driver to adjust a period during which the driving current is supplied to the light emitting element according to a voltage of the node. A peak current value of the driving current when the sub-pixel emits a light corresponding to a low gray level region is smaller than a peak current value of the driving current when the sub-pixel emits a light corresponding to a high gray level region higher than the low gray level region.

公开(公告)号：US11869415B2

公开(公告)日：2024-01-09

申请号：US17719930

申请日：2022-04-13

Applicant: Samsung Display Co., LTD.

Inventor： Hyun Joon Kim ,  Jung Hwan Hwang ,  Kyung Hoon Chung ,  Jun Ki Jeong

IPC: G09G3/32 ,  H03K17/687

CPC classification number: G09G3/32 ,  H03K17/6871 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/064

Abstract: A sweep signal driver includes: a kth stage to output a kth emission signal to a kth emission line, and a kth sweep signal to a kth sweep signal line, the kth stage including: first, second, and third pull-up nodes; a node connection circuit between the first pull-up node and the second pull-up node, and between the first pull-up node and the third pull-up node; a first output circuit to output a sweep clock signal of a sweep clock terminal to a first output terminal connected to the kth sweep signal line when the third pull-up node has a gate-on voltage; and a second output circuit to output a gate-on voltage to a second output terminal connected to the kth emission line when the second pull-up node has a gate-on voltage. A pulse of the kth sweep signal linearly changes from a gate-off voltage to the gate-on voltage.

公开(公告)号：US11837156B2

公开(公告)日：2023-12-05

申请号：US17807690

申请日：2022-06-17

Applicant: Samsung Display Co., LTD.

Inventor： Jung Hwan Hwang ,  Hyun Joon Kim ,  Kye Uk Lee ,  Sang Jin Jeon ,  Jun Ki Jeong

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2320/0633

Abstract: A display device includes a scan write line, a PWM emission line, a PAM emission line, a sweep signal line, a first data line, a second data line, and a subpixel connected thereto, and including a light emitting element, a first pixel driver to supply a control current to a node according to the first data voltage in response to the PWM emission signal, a second pixel driver to generate a driving current according to the second data voltage in response to the PWM emission signal, and a third pixel driver to supply the driving current to the light emitting element according to the PAM emission signal and a voltage of the node, wherein the PWM emission signal includes a plurality of PWM pulses, the PAM emission signal includes a plurality of PAM pulses, and a number of the PWM pulses is greater than a number of the PAM pulses.

公开(公告)号：US11688331B2

公开(公告)日：2023-06-27

申请号：US17849299

申请日：2022-06-24

Applicant: Samsung Display Co., LTD.

Inventor： Jung Hwan Hwang ,  Hyun Joon Kim ,  Kye Uk Lee ,  Sang Jin Jeon ,  Jun Ki Jeong

IPC: G09G3/22 ,  G09G3/3208 ,  G09G3/3241 ,  G09G3/3233 ,  G09G3/36

CPC classification number: G09G3/22 ,  G09G3/3208 ,  G09G3/3233 ,  G09G3/3241 ,  G09G3/3648 ,  G09G2330/025 ,  G09G2330/028

Abstract: A display device includes: a first pixel driver to generate a control current; a second pixel driver to generate a driving current, and control a period during which the driving current flows, based on the control current; and a light-emitting element connected to the second pixel driver to receive the driving current. The first pixel driver includes: a first transistor to generate the control current based on a first data voltage; and a second transistor to provide the first data voltage to a first electrode of the first transistor based on a scan write signal from a scan write line. The second pixel driver includes: a third transistor to generate the driving current based on the control current; and a fourth transistor to provide a second data voltage to a first electrode of the third transistor based on a scan write signal from the scan write line.

公开(公告)号：US11552063B2

公开(公告)日：2023-01-10

申请号：US17002258

申请日：2020-08-25

Applicant: Samsung Display Co., LTD.

Inventor： Kyung Bae Kim ,  Dong Hwan Kim ,  Mee Hye Jung ,  Jun Ki Jeong

IPC: H01L25/16 ,  H01L27/12 ,  H01L33/62 ,  H01L23/00

Abstract: A display device includes a substrate including a display area including pixel areas and a non-display area adjacent to the display area; and a pixel disposed in each of the pixel areas. The pixel includes a sub-electrode, a first conductive line, and a second conductive line on the substrate; a first insulating layer over the sub-electrode and the first and second conductive lines; first to fourth electrodes on the first insulating layer; a second insulating layer over the first and second electrodes to completely overlap the first and second electrodes, the second insulating layer exposing the third and fourth electrodes; light emitting elements between the first and second electrodes; a first contact electrode on the first electrode; and a second contact electrode on the second electrode.

公开(公告)号：US11508801B2

公开(公告)日：2022-11-22

申请号：US17210279

申请日：2021-03-23

Applicant: Samsung Display Co., LTD.

Inventor： Jun Hyun Park ,  Min Jae Jeong ,  Seon Young Choi ,  Jun Ki Jeong ,  Jae Hyung Cho

IPC: H01L27/32 ,  G09G3/3225 ,  G09G3/3233

Abstract: A display device includes: scan lines extending in a first direction; data lines extending in a second direction intersecting the first direction and receiving data voltages; first driving voltage lines extending in the second direction and receiving a first driving voltage; second driving voltage lines extending in the second direction and receiving a second driving voltage different from the first driving voltage; and pixels connected to the scan and data lines. Each of the pixels includes first, second, and third subpixels arranged in the first direction. The first driving voltage lines and the second driving voltage lines are alternately arranged in the first direction. A location of the first driving voltage line in a first pixel differs from a location of the second driving voltage line in a second pixel. The second pixel is adjacent to the first pixel in the first direction.

公开(公告)号：US20220172682A1

公开(公告)日：2022-06-02

申请号：US17675406

申请日：2022-02-18

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyun Joon Kim ,  Jun Ki Jeong

IPC: G09G3/3266

Abstract: A pixel of a light-emitting display device includes a capacitor, a first transistor, a second transistor including a gate receiving a gate writing signal, a third transistor including a gate receiving a scan signal, a fourth transistor including a gate receiving a gate initialization signal, a fifth transistor including a gate receiving a first emission signal, a sixth transistor including a gate receiving a second emission signal, and a light-emitting diode. The scan signal and the gate writing signal may be provided at a first frequency, and the first emission signal, the second emission signal and the gate initialization signal may be provided at a second frequency higher than the first frequency.

公开(公告)号：US10983381B2

公开(公告)日：2021-04-20

申请号：US16534430

申请日：2019-08-07

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jun Ki Jeong ,  Hyun Joon Kim ,  Kyung Bae Kim ,  Kyung Hoon Chung ,  Chong Chul Chai

IPC: G02F1/1333 ,  F21V8/00 ,  G09G3/20

Abstract: A tiled display device includes an array of a plurality of display panels. Each of the plurality of display panels includes a plurality of pixels constituting a plurality of pixel rows and a plurality of pixel columns, a data distributor disposed between a first pixel of a first pixel row among the plurality of pixel rows and a second pixel of the first pixel row adjacent to the first pixel in a first direction, and a scan driver disposed between the second pixel and a third pixel adjacent to the second pixel in the first direction.