公开(公告)号：US20190180702A1

公开(公告)日：2019-06-13

申请号：US16059335

申请日：2018-08-09

Applicant: Samsung Display Co., Ltd.

Inventor： Kang-min KIM ,  Nam-gon CHOI ,  Namheon KIM ,  Joohwan PARK ,  Jang-mi LEE ,  Junghwan YI

IPC: G09G3/36 ,  G09G3/20 ,  G09G3/3258

CPC classification number: G09G3/3607 ,  G09G3/2003 ,  G09G3/2007 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3614 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/0242 ,  G09G2320/0276

Abstract: A display device includes: a data driver for driving a plurality of data lines; a voltage generator for generating at least one driving voltage to be provided to the data driver; and a driving controller for providing a second image signal and a reference gamma selection signal to the data driver in response to a first image signal and a control signal received from the outside, wherein the driving controller outputs a voltage control signal for changing a voltage level of the at least one driving voltage, and the reference gamma selection signal, based on metadata included in the first image signal, and the data driver receives the reference gamma selection signal and the at least one driving voltage to provide, to the plurality of data lines, data voltage signals corresponding to the second image signal.

公开(公告)号：US20190073964A1

公开(公告)日：2019-03-07

申请号：US16120607

申请日：2018-09-04

Applicant: Samsung Display Co., Ltd.

Inventor： Seokha HONG ,  Nam-gon CHOI ,  Moonshik KANG ,  Jaehoon LEE ,  Kyoungho LIM

IPC: G09G3/34

Abstract: A display device includes a display panel, a plurality of sensors, a signal control unit, and a backlight unit. A plurality of dimming regions is defined in the display panel. The signal control unit determines a plurality of representative luminance values corresponding to the plurality of dimming regions based on image data signals received from an external device and illuminance values of an external light measured by the plurality of sensors. The backlight unit provides lights having the representative luminance values to the display panel.

公开(公告)号：US20190057661A1

公开(公告)日：2019-02-21

申请号：US16104294

申请日：2018-08-17

Applicant: Samsung Display Co., Ltd.

Inventor： Nam-gon CHOI ,  Jonghyun LEE ,  WonJin SEO

IPC: G09G3/36

CPC classification number: G09G3/3607 ,  G09G3/2092 ,  G09G3/3611 ,  G09G2320/0242 ,  G09G2320/029 ,  G09G2320/0666 ,  G09G2340/0435 ,  G09G2340/06 ,  G09G2370/08

Abstract: A display apparatus includes a display, a frequency compensator, a frequency adjuster, and a driver. The display includes first, second, and third pixels to display an image having color information. The frequency compensator receives first, second, and third pixel data respectively corresponding to the first, second, and third pixels, converts the first, second, and third pixel data to hue data, and outputs a frequency control signal to change a current driving frequency of the display based on the hue data. The frequency adjuster changes the driving frequency to a predetermined compensation frequency in response to the frequency control signal and changes a frequency of image data and an image control signal such that the display is driven at the predetermined compensation frequency. The driver receives the changed image data and the changed image control signal and drives the display at the predetermined compensation frequency.