公开(公告)号：US20250037622A1

公开(公告)日：2025-01-30

申请号：US18633449

申请日：2024-04-11

Applicant: Samsung Display Co., LTD. ,  UIF (University Industry Foundation), Yonsei University

Inventor： HYUNGSUK HWANG ,  YOURA KIM ,  HYOSUN KIM ,  Cheong Il KIM ,  Jeong Hyeon PARK ,  Sang Chul CHONG ,  Ji Eun CHO ,  Jeung Hwan CHOI

IPC: G09G3/00

Abstract: A display device includes a driving frequency calculator configured to divide output image data into central, intermediate, and peripheral images respectively corresponding to central, intermediate, and peripheral visual field regions, calculate spatial frequencies of the central image, the intermediate image, and the peripheral image, calculate critical flicker frequencies of the central visual field region, the intermediate visual field region, and the peripheral visual field region based on the spatial frequencies and based on viewing angles of the central visual field region, the intermediate visual field region, and the peripheral visual field region, and determine driving frequencies of the central visual field region, the intermediate visual field region, and the peripheral visual field region based on the critical flicker frequencies, and a display panel configured to display an image based on the output image data and based on the driving frequencies.

公开(公告)号：US20220335884A1

公开(公告)日：2022-10-20

申请号：US17670905

申请日：2022-02-14

Applicant: Samsung Display Co., Ltd.

Inventor： EUNJUNG LEE ,  WOO-YOUNG CHEON ,  HYUNGSUK HWANG

IPC: G09G3/32

Abstract: A pixel includes a light-emitting element, a driving switching element and a noise switching element. The driving switching element applies a driving current to the light-emitting element. The noise switching element outputs a noise signal having a noise frequency to an input electrode of the driving switching element in response to a noise control signal. The noise frequency is equal to or greater than a driving frequency of the pixel. The noise signal having a periodicity is applied to the input electrode of the driving switching element of the pixel.

公开(公告)号：US20250157403A1

公开(公告)日：2025-05-15

申请号：US18942769

申请日：2024-11-10

Applicant: Samsung Display Co., LTD.

Inventor： YOURA KIM ,  HYOSUN KIM ,  HYUNGSUK HWANG

IPC: G09G3/3233

Abstract: A display device includes: a display panel including pixels; and a display panel driver which drives the display panel. When a driving frequency of the display panel is changed from a first driving frequency to a second driving frequency which is different from the first driving frequency, the display panel driver determines a non-emission time of a first frame period of the second driving frequency based on a non-emission time of a frame period of the first driving frequency.

公开(公告)号：US20240404453A1

公开(公告)日：2024-12-05

申请号：US18585058

申请日：2024-02-23

Applicant: Samsung Display Co., Ltd.

Inventor： HYUNGSUK HWANG ,  YOURA KIM ,  HYOSUN KIM

IPC: G09G3/20 ,  G09G3/3233 ,  G09G3/3275

Abstract: A display device includes a display panel that emits light in response to a panel driving signal, a panel driver that provides the panel driving signal to the display panel, and a driving controller that receives an image signal at a current frame rate and controls driving of the panel driver based on the image signal and a control signal. The driving controller includes a comparing unit that compares a reference frame rate and the current frame rate and outputs a duty control signal when the current frame rate is less than the reference frame rate, a duty control unit that controls a current duty ratio of a current emission period of the display panel based on the duty control signal, and a luminance control unit that controls luminance of each of the pixels based on the current duty ratio.

公开(公告)号：US20240274060A1

公开(公告)日：2024-08-15

申请号：US18423665

申请日：2024-01-26

Applicant: Samsung Display Co., LTD. ,  UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)

Inventor： HYOSUN KIM ,  Oh-Sang KWON ,  SEONGGYU CHOE ,  CHANG YEONG HAN ,  MIN-KYUNG KIM ,  YOURA KIM ,  HYUNGSUK HWANG ,  EUNJUNG LEE

IPC: G09G3/20 ,  G09G3/3233 ,  G09G3/3275

CPC classification number: G09G3/2096 ,  G09G3/2007 ,  G09G3/3233 ,  G09G3/3275 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2330/028 ,  G09G2340/0435

Abstract: A display device includes: a display panel including a plurality of pixels; and a panel driver that drives the display panel at a target refresh rate different from a previous refresh rate. The panel driver includes: a comparator which compares a difference value between the previous refresh rate and the target refresh rate with a reference value generated by multiplying the previous refresh rate by a predetermined reference percentage; and a determiner which determines a final count of at least one compensation frame to be inserted between a previous driving frame operating at the previous refresh rate and a target driving frame operating at the target refresh rate when the difference value is not less than the reference value, where the final count is a total number of the at least one compensation frame, and a natural number.