公开(公告)号：US20230117873A1

公开(公告)日：2023-04-20

申请号：US17863893

申请日：2022-07-13

Applicant: Samsung Display Co., Ltd.

Inventor： JIHYE KIM ,  YU-CHOL KIM ,  Seongoh YEOM ,  JAKYOUNG JIN

IPC: G09G3/32

Abstract: A display device includes a light-emitting device, a first transistor, and a second transistor connected between the first transistor and the light-emitting device and including a gate electrode which receives the emission control signal. When a driving frequency is a second frequency less than a first frequency, one frame includes an active period and a blank period, and during the active period, a pulse width of the emission control signal has a first value, and during the blank period, the pulse width of the emission control signal has a second value different from the first value.

公开(公告)号：US20250054440A1

公开(公告)日：2025-02-13

申请号：US18666151

申请日：2024-05-16

Applicant: Samsung Display Co., LTD.

Inventor： CHANGNOH YOON ,  SANGAN KWON ,  SOON-DONG KIM ,  JIHYE KIM ,  TAEHOON KIM ,  MIN-KYU PARK

IPC: G09G3/3208

Abstract: An electronic device includes a display panel that operates in a normal mode, a multi-frequency mode, or a refresh mode, a driving controller, and a host generating and outputting a luminance information. In the multi-frequency mode, a display area defined in the display panel is divided into a first display area and a second display area, and the driving controller controls the first display area and the second display area so as to operate at different frequencies. In the normal mode, the driving controller controls the display area so as to operate at a normal frequency. In the refresh mode, the driving controller controls the display area so as to operate at the normal frequency during one frame. When the luminance information changes, the display panel operates in the refresh mode.

公开(公告)号：US20250029545A1

公开(公告)日：2025-01-23

申请号：US18613133

申请日：2024-03-22

Applicant: Samsung Display Co., Ltd.

Inventor： JIHYE KIM ,  SANGAN KWON ,  SOON-DONG KIM ,  TAEHOON KIM ,  SEOK HWAN ROH ,  CHANGNOH YOON

IPC: G09G3/32

Abstract: A display device which includes a display panel that includes a first display area and a second display area, and a driving controller. During a multi-frequency mode, the driving controller drives the first display area by using a first driving frequency and drives the second display area by using a second driving frequency. During the multi-frequency mode, when the second driving frequency changes from a first frequency to a second frequency, the driving controller drives the first display area and the second display area during at least one frame by using a base frequency, drives the first display area and the second display area during at least one second frame by using an intermediate frequency between the base frequency and the second frequency, and then drives the first display area by using the first driving frequency and drives the second display area by using the second frequency.

公开(公告)号：US20240257720A1

公开(公告)日：2024-08-01

申请号：US18493977

申请日：2023-10-25

Applicant: Samsung Display Co., LTD.

Inventor： Seongoh YEOM ,  YU-CHOL KIM ,  JIHYE KIM ,  JIN-WOOK YANG ,  EUI-MYEONG CHO ,  JAKYOUNG JIN

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0247 ,  G09G2360/16

Abstract: A luminance compensation method of a display device includes a first luminance for a reference grayscale at a first operating frequency and a second luminance for the reference grayscale at a second operating frequency are measured. A first reference value is calculated based on the first luminance and the second luminance, a first duty ratio of the initialization control signal is changed into a second duty ratio depending on a comparison result of the first reference value and a threshold value After the first duty ratio is changed into the second duty ratio, a third luminance for the reference grayscale is measured, and a second reference value is calculated based on the first luminance and the third luminance. A final duty ratio corresponding to the threshold value is calculated depending on a comparison result of the second reference value and the threshold value.

公开(公告)号：US20240153434A1

公开(公告)日：2024-05-09

申请号：US18239124

申请日：2023-08-29

Applicant: Samsung Display Co., Ltd.

Inventor： JIHYE KIM ,  YU-CHOL KIM ,  JIN-WOOK YANG ,  Seongoh YEOM ,  EUI-MYEONG CHO ,  JAKYOUNG JIN

IPC: G09G3/20

CPC classification number: G09G3/2096 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/0267 ,  G09G2320/0233

Abstract: Disclosed is a display device including a display panel including a pixel, a scan driver, and a driving controller that controls driving of the scan driver. The scan driver provides the pixel with a first mode scan signal having a first active period and a second active period in a first mode and provides the pixel with a second mode scan signal having a compensation active period in a second mode. The driving controller determines whether an operating frequency of the display device corresponds to one of predetermined compensation frequencies in a variable frequency mode, and operates the scan driver in the first mode or the second mode depending on a determination result of the determining.

公开(公告)号：US20240038169A1

公开(公告)日：2024-02-01

申请号：US18376760

申请日：2023-10-04

Applicant: Samsung Display Co., Ltd.

Inventor： JIHYE KIM ,  YU-CHOL KIM ,  Seongoh Yeom ,  JAKYOUNG JIN

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

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2320/0233 ,  G09G2300/0852 ,  G09G2300/0819 ,  G09G2320/043 ,  G09G2310/08

Abstract: A display device comprises a display panel including a pixel, and a panel driver configured to receive input image data in a variable frame frequency in order to drive the display panel based on the input image data. A frame period for the display panel is divided into at least one scan period and at least one or more hold periods, and a time during which the pixel performs an anode initialization operation in each of the hold periods is longer than a time during which the pixel performs the anode initialization operation in the scan period.

公开(公告)号：US20230154389A1

公开(公告)日：2023-05-18

申请号：US17986987

申请日：2022-11-15

Applicant: SAMSUNG DISPLAY CO, LTD.

Inventor： YUNHWAN PARK ,  YONGJAE KIM ,  JIHYE KIM ,  YOONJEE SHIN

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0278 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2320/0247

Abstract: A display device includes a pixel connected to a first gate line, an emission control line, a bias gate line, and a data line. A gate driver is configured to supply a first gate signal to the first gate line in an address scan period and configured to supply a bias write gate signal to the bias gate line in a self-scan period. An emission driver is configured to supply an emission control signal in the address scan period and in a self-scan period. A data driver is configured to supply a first data voltage to the data line in the address scan period and configured to supply a second data voltage to the data line in the self-scan period. The second data voltage is set based on the first data voltage.

公开(公告)号：US20220084472A1

公开(公告)日：2022-03-17

申请号：US17471217

申请日：2021-09-10

Applicant: Samsung Display Co., Ltd.

Inventor： JIHYE KIM ,  JAKYOUNG JIN ,  YU-CHOL KIM ,  JIN-WOOK YANG

IPC: G09G3/3291 ,  G09G3/3266

Abstract: A pixel of an OLED display device includes a first capacitor, a second capacitor, a first transistor configured to generate a driving current, a second transistor configured to transfer a data voltage to a first node, a third transistor configured to diode-connect the first transistor, a fourth transistor configured to transfer an initialization voltage to the second node, a fifth transistor configured to transfer a reference voltage to the first node, a sixth transistor configured to couple a drain of the first transistor and an anode of an organic light emitting diode, a seventh transistor configured to transfer the initialization voltage to the anode of the organic light emitting diode, an eighth transistor configured to transfer the initialization voltage to the drain of the first transistor, and the organic light emitting diode.

公开(公告)号：US20210376041A1

公开(公告)日：2021-12-02

申请号：US17166017

申请日：2021-02-03

Applicant: Samsung Display Co., Ltd.

Inventor： DONGGYU LEE ,  JIHYE KIM ,  JIN-WOOK YANG ,  JAE-HYEON JEON

IPC: H01L27/32

Abstract: A display device includes a display panel including a plurality of pixels. At least one of the pixel includes a light emitting diode, a first transistor connected between a power line receiving a power source voltage and an anode of the light emitting diode, a second transistor connected between a data line and a first reference node, a first capacitor connected between the power line and the first reference node, a second capacitor connected between the first reference node and a second reference node, a third transistor connected between the first reference node and a reference voltage line receiving a reference voltage, a fourth transistor connected between an initialization voltage line receiving an initialization voltage and a drain of the first transistor, and a fifth transistor connected between the drain of the first transistor and the anode of the light emitting diode.

公开(公告)号：US20180219171A1

公开(公告)日：2018-08-02

申请号：US15870284

申请日：2018-01-12

Applicant: Samsung Display Co., LTD.

Inventor： JIHYE KIM ,  AHYOUNG SON ,  BYUNGSUN KIM

IPC: H01L51/52 ,  H01L27/32

Abstract: A display substrate includes an organic light emitting diode disposed in a light-emitting area on a base substrate, a reflection electrode disposed in a reflection area on the base substrate, a transparent electrode disposed on the reflection electrode, and a reflection control layer disposed between the reflection electrode and the transparent electrode, and configured to control a reflectivity based on driving signals applied to the reflection electrode and the transparent electrode.