公开(公告)号：US10665198B2

公开(公告)日：2020-05-26

申请号：US15939552

申请日：2018-03-29

Applicant: Samsung Display Co., Ltd.

Inventor： Kyung-hun Lee

IPC: G09G3/30 ,  G09G3/36 ,  G09G3/34

Abstract: A display apparatus includes a display panel including a plurality of pixels, a gate driver generating a plurality of gate signals using a gate-on voltage and a gate-off voltage and providing the gate signals to the pixels, a data driver providing data voltages to the pixels, a timing controller controlling an operation timing of the gate driver and the data driver, a voltage generator providing the gate-on voltage and the gate-off voltage to the gate driver, and a timer measuring an operation time and providing the measured operation time to the timing controller. The timing controller controls the voltage generator such that a level of the gate-on voltage is controlled depending on the operation time and the level of the gate-on voltage is controlled depending on a magnitude of the gate-on voltage in a different way from a way to control depending on the operation time and the temperature.

公开(公告)号：US11295697B2

公开(公告)日：2022-04-05

申请号：US17092650

申请日：2020-11-09

Applicant: Samsung Display Co., Ltd.

Inventor： Jahun Koo ,  Haksun Kim ,  Kyung-hun Lee

IPC: G09G5/00 ,  G09G3/20 ,  H04N7/01

Abstract: A display device includes a display panel which includes pixels arranged in a matrix form and a controller which receives a first image signal corresponding to a first active period of a first frame, outputs a first final output signal corresponding to a first conversion active period of the first frame, and drives the display panel based on the first final image signal. The controller includes a timing changing unit which receives the first image signal and changes a first image signal pixel size corresponding to the first image signal to a panel pixel size corresponding to the display panel to generate the first output signal, and a frequency changing unit which receives the first output signal from the timing changing unit and reduces a frame frequency of the first output signal based on the first image signal to output the first final output signal.

公开(公告)号：US20190180695A1

公开(公告)日：2019-06-13

申请号：US16117885

申请日：2018-08-30

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： TAE-SEOK HA ,  Kyung-hun Lee ,  Sucheol Kang ,  Jongwoon Kim ,  Kyu-jin Park ,  Sung-jae Park ,  Seung-woon Shin

IPC: G09G3/3291 ,  G09G3/3266 ,  G09G3/36

Abstract: A display device includes a display panel including gate lines, data lines, and pixels individually connected to a corresponding gate line and data line, a gate driver driving the gate lines, a data driver driving the data lines, and a driving controller. The driving controller receives, from an external source, first image signals and a variable frequency signal indicating an operation frequency (frame rate) for the display device. The driving controller converts the first image signals to second image signals by adding a compensation value corresponding to the operation frequency to the first image signals, and outputs the second image signals to the data driver. Embodiments may compensate for luminance reduction/variation and reduce image artifacts that otherwise occur due to variable frequency operation. An alternative embodiment dynamically controls an amount of light output from a backlight according to the variable frequency signal.

公开(公告)号：US10332479B2

公开(公告)日：2019-06-25

申请号：US15818008

申请日：2017-11-20

Applicant: Samsung Display Co., Ltd.

Inventor： Jahun Koo ,  Haksun Kim ,  Kyung-hun Lee

IPC: G09G3/20 ,  G09G5/00 ,  H04N7/01

Abstract: A display device includes a display panel which includes pixels arranged in a matrix form and a controller which receives a first image signal corresponding to a first active period of a first frame, outputs a first final output signal corresponding to a first conversion active period of the first frame, and drives the display panel based on the first final image signal. The controller includes a timing changing unit which receives the first image signal and changes a first image signal pixel size corresponding to the first image signal to a panel pixel size corresponding to the display panel to generate the first output signal, and a frequency changing unit which receives the first output signal from the timing changing unit and reduces a frame frequency of the first output signal based on the first image signal to output the first final output signal.

公开(公告)号：US11054699B2

公开(公告)日：2021-07-06

申请号：US16430593

申请日：2019-06-04

Applicant: Samsung Display Co., Ltd.

Inventor： Jahun Koo ,  Jinho Park ,  Kyung-hun Lee ,  Ho Lee ,  Tae-Jong Jun ,  Woo-young Cheon

IPC: G02F1/13357 ,  G02F1/1335

Abstract: A display apparatus includes a light source unit configured to output light, a display panel configured to display an image and including a first substrate, a second substrate facing the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate, and a diffusion layer provided between the light source unit and the display panel and including scatterers for scattering the light supplied from the light source unit. The diffusion layer has a first concentration area in which the scatterers are provided at a first concentration, and a second concentration area in which the scatterers are provided at a second concentration.

公开(公告)号：US10832631B2

公开(公告)日：2020-11-10

申请号：US16426531

申请日：2019-05-30

Applicant: Samsung Display Co., Ltd.

Inventor： Jahun Koo ,  Haksun Kim ,  Kyung-hun Lee

IPC: G09G5/00 ,  G09G3/20 ,  H04N7/01

Abstract: A display device includes a display panel which includes pixels arranged in a matrix form and a controller which receives a first image signal corresponding to a first active period of a first frame, outputs a first final output signal corresponding to a first conversion active period of the first frame, and drives the display panel based on the first final image signal. The controller includes a timing changing unit which receives the first image signal and changes a first image signal pixel size corresponding to the first image signal to a panel pixel size corresponding to the display panel to generate the first output signal, and a frequency changing unit which receives the first output signal from the timing changing unit and reduces a frame frequency of the first output signal based on the first image signal to output the first final output signal.

公开(公告)号：US10685618B2

公开(公告)日：2020-06-16

申请号：US15829007

申请日：2017-12-01

Applicant: Samsung Display Co., Ltd.

Inventor： Jahun Koo ,  Haksun Kim ,  Kyung-hun Lee ,  Ho Lee

IPC: G09G3/36 ,  G09G3/3291 ,  G09G5/00

Abstract: A display device includes a display panel which includes a plurality of gate lines and a plurality of pixels, where each of the pixels is connected to a corresponding gate line among the gate lines, and a gate driving circuit which includes a stage that applies a gate signal to at least one of the gate lines. The gate signal includes a high period in which the gate signal has a high voltage and a low period in which the gate signal has a low voltage having a level less than a level of the high voltage, and the low period includes a falling period in which the low voltage falls to a second level from a first level which is greater than the second level.