公开(公告)号：US20240185783A1

公开(公告)日：2024-06-06

申请号：US18364724

申请日：2023-08-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： KYUNG-WOO KIM ,  CHEOLMIN KIM ,  SUN-KOO KANG

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0626

Abstract: A display device includes a display panel including pixels connected to emission lines, a controller configured to receive a control signal, and to generate an emission start signal, a first emission clock signal and a second emission clock signal, and an emission driver configured to provide emission signals to the pixels through the emission lines in response to the emission start signal, the first emission clock signal and the second emission clock signal. The controller is further configured to determine an off period ratio for the pixels in units of two or more frame periods in response to the dimming signal. The control signal may be a dimming signal, a low power mode signal, or another type of signal indicative of operation of the display device.

公开(公告)号：US20230135235A1

公开(公告)日：2023-05-04

申请号：US18045570

申请日：2022-10-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： JAEHOON LEE ,  DAE-SEOP KIM ,  CHEOLMIN KIM ,  BYUNG KI CHUN

IPC: G09G3/3275

Abstract: A display device may compensate for such changes in characteristics of light emitting elements and transistors in pixels of a display. For example, a driving circuit of a display device may update a lookup table that stores one or more compensation values. Each compensation value may correspond to a characteristic change of a pixel. In some embodiments, the characteristic change of a transistor may be determined based on a sensing signal received from a dummy pixel. Accordingly, a display device may generate a compensation signal based on an actual characteristic change of the transistor in the pixel. The compensation signal may be used by the display device to compensate for pixel characteristic changes that occur over time. For instance, a display device may use such compensation signals to correct input signals (e.g., to generate a corrected output signal) to be applied to one or more pixels of a display.