公开(公告)号：US11114056B2

公开(公告)日：2021-09-07

申请号：US16388231

申请日：2019-04-18

Applicant: Samsung Display Co., Ltd.

Inventor： Yanguk Nam ,  Dae-Sik Lee ,  Taegon Im

IPC: G09G5/00

Abstract: A display apparatus includes a display panel, a data driver, a power voltage generator, a driving controller and a timing compensator. The display panel displays an image based on input image data. The data driver outputs a data voltage to the display panel. The power voltage generator outputs a data power voltage to the data driver. The driving controller controls a driving timing of the data driver. The timing compensator changes an output timing of the data voltage of the data driver when a feedback data power voltage is less than a reference data power voltage at a start point of an active period.

公开(公告)号：US11081076B2

公开(公告)日：2021-08-03

申请号：US16383004

申请日：2019-04-12

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Taegon Im ,  Jae-Han Lee

IPC: G09G3/36

Abstract: A display device includes a signal controller configured to provide data and a frame control signal, a display panel including first to m-th data line groups, and a data driver configured to receive the data and the frame control signal, and output a data signal corresponding to the data to the first to m-th data line groups. The data driver includes first to m-th data driving circuit units electrically connected to the first to m-th data line groups in one-to-one correspondence, Each of the first to m-th data driving circuit units includes a clock adjustment unit configured to generate a second clock signal using a first clock signal and the frame control signal. The second clock signal controls an output timing of the data signal to be transmitted to a first channel among a plurality of channels of each of the first to m-th data line groups.

公开(公告)号：US10475487B2

公开(公告)日：2019-11-12

申请号：US15914004

申请日：2018-03-07

Applicant: Samsung Display Co., Ltd.

Inventor： Guhui Jo ,  Wontae Kim ,  Sun-koo Kang ,  Taegon Im

IPC: G09G3/36 ,  G09G3/3275 ,  G11C7/10 ,  G09G5/00 ,  G09G3/3291

Abstract: A data driver includes a first latch, a second latch, a digital-to-analog converter, and an output buffer. The first latch sequentially stores first line data in response to a first sampling signal and outputs the stored data in parallel. The second latch sequentially stores second line data in response to a second sampling signal and outputs the stored data in parallel. The digital-to-analog converter converts the parallel data provided from one of the first and second latches to data voltages. The output buffer outputs the data voltages in response to a delay clock.

公开(公告)号：US10446106B2

公开(公告)日：2019-10-15

申请号：US15824434

申请日：2017-11-28

Applicant: Samsung Display Co., Ltd.

Inventor： Taegon Im ,  Boyeon Kim ,  Jae-Han Lee

IPC: G09G3/36 ,  G09G3/20 ,  H04B1/16

Abstract: A display apparatus includes a display panel, a gate driving part, a data driving part and a voltage providing part. The display panel displays an image, and includes gate lines and data lines. The gate driving part outputs gate signals to the gate lines. The data driving part outputs data signals to the data lines through data channels, and outputs a dummy data signal through a dummy data channel adjacent to a side of the display panel. The voltage providing part provides a driving voltage to the data driving part, receives the dummy data signal, and controls the driving voltage provided to the data driving part based on a voltage difference of the dummy data signal according to a time of the dummy data signal.

公开(公告)号：US09852699B2

公开(公告)日：2017-12-26

申请号：US15061139

申请日：2016-03-04

Applicant: Samsung Display Co., LTD.

Inventor： Taegon Im ,  Min-gyu Kim ,  Youngsup Kwon

IPC: G09G3/36 ,  G09G3/34 ,  H05B33/08 ,  G09G3/00

CPC classification number: G09G3/342 ,  G09G3/003 ,  G09G3/3648 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/064 ,  G09G2330/021 ,  G09G2330/12 ,  H05B33/0815 ,  H05B33/0827 ,  H05B33/0851

Abstract: A backlight unit includes a power converter which generates a light source power voltage at a first node in response to a voltage control signal, at least one light emitting diode string which is connected between the first node and a second node and receives the light source power voltage through the first node, and a controller connected to the second node where the controller detects current of a detection node varying based on a duty ratio of the power control signal, and controls current flowing through the second node when the detected current is greater than a reference value.