Samsung Display Co., Ltd.

Samsung Displayco., Ltd.

Sukjin Park

Jae-Han Lee

Wonhee Lee

Kwan-Young Oh

Jaehyoung Park

Junpyo Lee

Jae-Gwan Jeon

Dongwon Park

Sangsu Han

Yoongu Kim

Akihiro Takegama

A method of operating a display device involves detecting whether a frame mode of the display device is a normal mode in which image data are received with a constant frame rate or a variable frame mode in which the image data are received with a variable frame rate. An output buffer drivability of a data driver included in the display device may be set according to the detected frame mode, and an image is displayed by outputting data voltages corresponding to the image data with slew rates corresponding to the set output buffer drivability. Power consumption in output buffer amplifiers may be selectively lowered by setting a relatively low output buffer drivability corresponding to a relatively low slew rate.

Display device supporting normal and variable frame modes

A liquid crystal display includes a display panel, a timing controller, a gate driver, and a data driver. The display panel includes a plurality of pixels. The timing controller receives an image data, compares a previous line data with a present line data to determine whether the present line data needs to be compensated, and generates a first modulation line data. In addition, the timing controller calculates the first modulation data and a delay compensation value to generate a second modulation line data. The delay compensation value is decided from reference delay compensation values of reference pixels among the pixels.

Liquid crystal display

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Daejeon, South Korea

Sukjin Park