公开(公告)号：US11694632B2

公开(公告)日：2023-07-04

申请号：US17173528

申请日：2021-02-11

Applicant: Samsung Display Co., Ltd.

Inventor： Yanguk Nam ,  Hyungrae Nam

IPC: G09G3/3291

CPC classification number: G09G3/3291 ,  G09G2310/0291 ,  G09G2330/028

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.

公开(公告)号：US11741868B2

公开(公告)日：2023-08-29

申请号：US17963801

申请日：2022-10-11

Applicant: Samsung Display Co., Ltd.

Inventor： Hyungrae Nam ,  Jin-Taek Hong

IPC: G09G3/36 ,  G09G3/00 ,  G09G3/32

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

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.