Samsung Display Co., Ltd.

Si-Baek Pyo

Jae-Yong Kim

Jung-Kook Park

Byung-Hoon Chae

Young-Seob Kim

An organic light emitting diode display device including: a display panel including a plurality of pixels, a scan driving unit configured to supply a scan signal to the pixels via a plurality of scan lines, a data driving unit configured to supply a data signal to the pixels via a plurality of data lines, an emission driving unit configured to supply an emission control signal to the pixels via a plurality of emission control lines, and a timing control unit configured to control the scan driving unit, the data driving unit, and the emission driving unit, and to control the emission driving unit to gradually change an off-period of the emission control signal each time a number of image frames are displayed.

Organic light emitting display device and method of driving an organic light emitting display device

A driving method for dimming an organic light-emitting diode (OLED) display is disclosed. In one aspect, the method includes selecting a dimming mode indicating a maximum luminance to be displayed by the OLED display based on an input and determining a luminance range from a plurality of luminance ranges. The determined luminance range comprises the maximum luminance of the dimming mode. The method also includes performing at least one of converting image data based at least in part on the dimming mode or controlling a duty ratio of an emission control signal, wherein the performing is based at least in part on the determined luminance range.

Driving method for dimming an organic light-emitting diode (OLED) display

A display device includes a pixel unit including a plurality of pixels that have light-emitting time periods adjusted in response to light-emitting control signals, and a brightness control unit that adjusts a duty ratio of the light-emitting control signals and setting gamma and that converts image data according to a brightness mode.

Display device and method of driving the same

In a method of compensating gamma reference voltages includes setting a plurality of emission signal on-duty ratios that have different values in a range from 0% to 100%, setting a plurality of data offsets for the emission signal on-duty ratios and each of the data offsets being set based on a color shift, the color shift being caused according to the emission signal on-duty ratios, generating a plurality of compensation gamma reference voltages by multiplying a gamma reference voltage by the data offsets, and applying the compensation gamma reference voltages to an organic light emitting display panel in dimming ranges that include the emission signal on-duty ratios, respectively.

Method of compensating gamma reference voltages

There is provided an organic light emitting display capable of improving the display quality of a low brightness region. The organic light emitting display includes pixels positioned at intersections of scan lines, emission control lines, and data lines, a converter for receiving data to generate brightness values, a timing controller for extracting emission time values and gamma values to correspond to the brightness values, an emission control line driver for supplying emission control signals to the emission control lines so that emission times of the pixels are controlled to correspond to the emission time values, and a gamma voltage generator for generating gamma voltages corresponding to the gamma values.

Organic light emitting display and method of driving the same

Method of compensating gamma reference voltages, and gamma reference voltage compensation circuit

A liquid crystal display (LCD) apparatus includes a liquid crystal panel, a printed circuit board (PCB) that generates a driving signal to drive the liquid crystal panel, and a backlight unit between the liquid crystal panel and the PCB. The backlight unit has a through hole formed therein. The LCD also includes a flexible printed circuit (FPC) electrically connected to a driving integrated circuit (IC) of the liquid crystal panel and electrically connected to the PCB in the through hole.

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Yongin, South Korea

Si-Baek Pyo