公开(公告)号：US20230230514A1

公开(公告)日：2023-07-20

申请号：US17963801

申请日：2022-10-11

Applicant: Samsung Display Co., Ltd.

Inventor： HYUNGRAE NAM ,  JIN-TAEK HONG

IPC: G09G3/00 ,  G09G3/32

CPC classification number: G09G3/006 ,  G09G3/32 ,  G09G2310/08 ,  G09G2310/0291 ,  G09G2330/028 ,  G09G2320/0276

Abstract: Provided is a display device which comprises a display panel including a plurality of pixels displaying an image based on a driving voltage, a reference voltage generator converting a sensing driving voltage generated by measuring the driving voltage into a sensing driving current, converting a preset reference driving voltage into a reference driving current, comparing the sensing driving current and the reference driving current, and generating a first reference voltage and a second reference voltage based on a difference between the sensing driving current and the reference driving current, a gamma voltage generator generating a plurality of gamma voltages by dividing the first reference voltage and the second reference voltage, and a data driver converting image data into a data voltage based on the gamma voltages and providing the data voltage to each of the pixels.

公开(公告)号：US20210335281A1

公开(公告)日：2021-10-28

申请号：US17173528

申请日：2021-02-11

Applicant: Samsung Display Co., Ltd.

Inventor： YANGUK NAM ,  HYUNGRAE NAM

IPC: G09G3/3291

Abstract: A power voltage generator includes a charge pump and a regulator. The charge pump generates a charge pumping voltage. The charge pumping voltage has a headroom margin which is automatically set. The charge pumping voltage is varied based on a target voltage. The regulator generates a power voltage based on the charge pumping voltage.