Samsung Display Co., Ltd.

Taehyeong An

Nam-Gon Choi

Jaehoon Lee

Namjae Lim

Jinpil Kim

Jai-Hyun Koh

Hoi Sik Moon

Jaesung Bae

Suhyeong Park

Soowan Yoon

Joon-Chul Goh

Dong-Won Park

Donggyu Lee

Seokha Hong

Geunjeong Park

Yujin Kim

Kyoung Ho Lim

Ji-Woong Jeong

Kangmin Kim

Joon-chul Goh

Jae Sung Bae

Soo-yeon Lee

Yunki Baek

KyoungHo Lim

Yoongu Kim

Seung Young Choi

Byoung Seok Yoo

Yongjun Jang

Seoung-Bum Pyoun

Kunhee Jo

Jeongbong Lee

Moon Shik Kang

Dongjoon Kwag

Gyuhun Han

A display device is disclosed that includes a display panel which includes a pixel, a driving controller which receives an input image signal and outputs an output image signal, and a data driving circuit which provides a data signal corresponding to the output image signal to the pixel. The pixel includes a light emitting device and a first transistor electrically connected to the light emitting device. The driving controller includes an initial threshold voltage map that stores an initial threshold voltage of the first transistor, a delta threshold voltage calculator that calculates a delta threshold voltage of the first transistor over an operating time based on the initial threshold voltage, a weight calculator that calculates a weight based on the initial threshold voltage and the delta threshold voltage, and a compensator that receives the input image signal and outputs an output image signal obtained by compensating for a threshold voltage of the first transistor based on the weight.

Display device, operating method of display device and pixel characteristic detection method

An electronic device is disclosed that includes a display panel, a data driving circuit, a scan driving circuit, and a driving controller. The driving controller generates image data based on a received image signal. The driving controller includes a minimum emission gray level determining unit that determines a gray level of the image signal, a pattern determining unit that determines a dither pattern of the image signal, a driving frequency sensing unit that determines a driving frequency of the image signal, and a data compensation unit that compensates for the image data based on the gray level and at least one of the dither pattern and the driving frequency.

Electronic device and driving method of electronic device

Provided is an electronic device according to an embodiment of the inventive concept may include a display panel including a plurality of pixels respectively connected to a plurality of data lines and a plurality of scan lines, a data driving circuit connected to the plurality of data lines, a scan driving circuit connected to the plurality of scan lines, and a driving controller generating image data, and controlling the data driving circuit and the scan driving circuit to display a plurality of frames at a first frequency on the display panel based on the image data, wherein at least one of the plurality of frames includes an effective interval during which an image is transmitted, a blanking interval during which the image is not transmitted, and a refresh interval operating at a second frequency different from the first frequency.

Electronic device

A display apparatus includes a backlight unit including a first light source for outputting a first color light, and a second light source for outputting a second color light that is different from the first color light, a switching element layer on the backlight unit, and including a plurality of switching elements, a liquid crystal layer on the switching element layer, and a color conversion layer on the liquid crystal layer, including a color-converting material for converting a color of light passing therethrough, including a first color area, a second color area, and a third color area, and including quantum dot particles.

Display apparatus and method of driving the same

A display device includes a display panel comprising a plurality of pixels, a data driver configured to generate data voltages based on a gamma reference voltage, and to provide the data voltages to the plurality of pixels, a gate driver configured to provide gate signals to the plurality of pixels, and a controller configured to control the data driver and the gate driver. The controller is configured to initialize the gamma reference voltage when a blank period starts in a frame period comprising an active period and the blank period, and to change the gamma reference voltage when a duration of the blank period reaches at least one threshold time.

Display device supporting variable frame mode, and method of operating display device

A display apparatus includes a local dimmer, an image compensator, a display panel and a light source. The local dimmer is configured to generate a dimming signal representing a degree of dimming for a light source block based on input image data. The image compensator is configured to determine a grayscale gain based on input grayscale value of the input image data and the dimming signal and to compensate luminance of the input image data based on the grayscale gain. The display panel is configured to display an image based on the compensated input image data. The light source is configured to provide light to the display panel based on the dimming signal.

A liquid crystal display device and a driving method of the liquid crystal display device includes a display panel including a plurality of gate lines, a plurality of data lines crossing the gate lines, and a plurality of pixels coupled to the gate lines and the data lines, a gate driver configured to provide a gate signal to the pixels through the gate lines, a data driver configured to provide a data signal to the pixels through the data lines and a timing controller configured to receive an image data provided from an external device and generate control signals that control the gate driver and the data driver. The timing controller analyzes a pattern of the image data by every frame, and changes an inversion driving method and gamma voltages of the image data based on a pattern analyzing result from the analysis of the pattern of the image data.

Liquid crystal display device having a timing controller for reducing crosstalk defect and driving method thereof

A display apparatus including a display panel, a gate driving part and a data driving part. The display panel is configured to display an image, and includes a gate line and a data line. The gate driving part is configured to output a gate signal to the gate line. The data driving part is configured to output a data signal to the data line, and to change a transition time when the data signal transits from a low level to a high level, according to at least one of a change of an inversion method for driving the display panel, and a change of a frame frequency of the image.

A display apparatus includes a display panel and a power supply. The display panel displays an image at a first driving frequency in a normal mode and displays an image at a second driving frequency in a low power mode. The second driving frequency is lower than the first driving frequency. The power supply outputs a first initialization voltage at a first level to the display panel during an active period of the low power mode. The power supply outputs a second initialization voltage at a second level to the display panel during at least a portion of a blank period of the low power mode. The second level is higher than the first level.

Organic light emitting display apparatus

A display device includes a display panel, a first timing controller, and a second timing controller. The display panel includes a first block and a second block adjacent to the first block, with a data line positioned between the first block and the second block. The first block includes a first column of pixels, and the second block includes a second column of pixels. The first and second columns of pixels are alternately connected to the data line. The first timing controller is configured to receive first image data corresponding to the first block. A second timing controller is configured to receive second image data corresponding to the second block. The first timing controller is configured to transfer at least part of the first mage data to the second timing controller.

Display device and driving method thereof using timing controllers that control image data being applied to adjacent blocks of pixels

Growing community of inventors

Hwaseong-si, South Korea

Taehyeong An