公开(公告)号：US12283226B2

公开(公告)日：2025-04-22

申请号：US18236011

申请日：2023-08-21

Applicant: Samsung Display Co., LTD.

Inventor： Byung Ki Chun ,  Sun-Koo Kang ,  Myeongbin Lim ,  Min-Seok Bae ,  Kanghee Lee

IPC: G09G3/32 ,  G09G3/3291

Abstract: A data driving circuit includes: a reference voltage generator that receives a data control signal and generates a gamma reference voltage and a test reference voltage, a data driving unit that outputs a data signal for a pixel based on the gamma reference voltage, and an output circuit that outputs a test data voltage for a dummy pixel based on the test reference voltage.

公开(公告)号：US11948514B2

公开(公告)日：2024-04-02

申请号：US17862507

申请日：2022-07-12

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyunho Lim ,  Myeongbin Lim ,  Hyunha Yang

IPC: G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2330/021 ,  G09G2340/16

Abstract: A display device including: a display panel including a plurality of pixels; a data driver configured to provide data voltages to the plurality of pixels; and a controller configured to control the data driver, to detect a same data region of the display panel when first image data in a current frame period is the same as second image data in a previous frame period, and not to transfer the first image data to the data driver in the current frame period.

公开(公告)号：US11893946B2

公开(公告)日：2024-02-06

申请号：US18098922

申请日：2023-01-19

Applicant: Samsung Display Co., Ltd.

Inventor： Sun-Koo Kang ,  Hyunha Yang ,  Myeongbin Lim

IPC: G09G3/3275 ,  G09G3/3233

CPC classification number: G09G3/3275 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2330/021 ,  G09G2330/028

Abstract: A display device includes: a display panel, a data driver, and a scan driver. The data driver outputs data signals during a writing frame and outputs a bias voltage during a holding frame. The data driver includes a plurality of driving chips, and each of the driving chips includes: a gamma voltage generator, a data converter, a main output part for outputting corresponding data signals of the data signals during the writing frame, and a sub-output part for outputting the bias voltage during the holding frame. The gamma voltage generator of a selected driving chip among the plurality of driving chips is electrically connected to the sub-output parts disposed in the plurality of driving chips, respectively.