Samsung Display Co., Ltd.

Hun-Bae Kim

Jihoon Kim

Yong-Gu Kang

Garam Kim

Hyun-Suk Kang

Jong-Seok Chae

A display apparatus including: a display panel including an emission line and a pixel electrically connected to the emission line; an emission driver configured to output an emission signal to the emission line; and a driving controller configured to determine a light emission cycle, wherein the light emission cycle is a number of light emissions in a single frame of the emission signal, wherein the driving controller is configured to determine a luminance according to a user luminance setting and a grayscale value of input image data, to determine the light emission cycle corresponding to a range of the luminance and to determine an off ratio according to the luminance, wherein the off ratio is a ratio of turned-off gate lines to a total number of the gate lines.

Display apparatus and a method of driving a display panel using the same

A gamma voltage generator included in a display device includes a gamma reference voltage storage block configured to store gamma reference voltage values at reference gray levels, an additional offset storage block configured to store additional offset values for the gamma reference voltage values at the reference gray levels, an additional offset setting block configured to store gamma select information representing whether the additional offset values are to be applied or not, a gamma reference voltage calculation block configured to generate final gamma reference voltage values by selectively adding the additional offset values to the gamma reference voltage values depending on the gamma select information, and a gamma reference voltage generation block configured to generate gamma reference voltages corresponding to the final gamma reference voltage values.

Gamma voltage generator and display device

A display device includes a display panel includes a plurality of pixels driven by a first power voltage and a second power voltage. A display panel driving circuit is configured to receive image data from an external device, output a first voltage control signal for generating an analog supply voltage based on an on-pixel ratio (OPR) of the image data, and output a second voltage control signal for generating the first power voltage and the second power voltage. A DC-DC conversion circuit is configured to generate the analog supply voltage based on the first voltage control signal and generate the first power voltage and the second power voltage based on the second voltage control signal.

Display device and driving method of the same

A method of driving a display device includes: calculating a reference luminance corresponding to a light emission intensity and an off-duty ratio corresponding to a non-emission time based on image data; and adjusting at least one selected from a first power voltage and a second power voltage to drive a display panel based on the reference luminance and the off-duty ratio.

Display device and method of driving a display device

A liquid crystal display apparatus includes a liquid crystal panel with a pad portion area, the pad portion area having an input pad portion, the input pad portion including a plurality of input pads and a plurality of dummy pads, an output pad portion, and a conducting wire portion, the conducting wire portion electrically connecting two dummy pads of the plurality of dummy pads in the input pad portion, a driving integrated circuit (IC) on the pad portion area, the driving IC including an input bump portion corresponding to the input pad portion and an output bump portion corresponding to the output pad portion, and a flexible printed circuit (FPC) electrically connected to the driving IC.

Growing community of inventors

Asan-si, South Korea

Hun-Bae Kim