Lg Display Co., Ltd.

Nak-Yoon Kim

Chan Young Park

So-Jeong Kim

You-Sung Nam

Si-Hyun Kim

Sai-Chang Yun

Ji-Su Kim

Ji-Yong Hwang

Jong-Taek Kim

Hong-Soon Kim

A display apparatus includes a display panel including pixels arranged along a plurality of horizontal lines; a data driving portion converting image data of the pixels into data voltages; a frame memory receiving and storing the image data of a refresh frame; and a data processing portion receiving and image quality-processing the image data stored in the frame memory in a unit of one horizontal line, and transmitting the image quality-processed image data to the data driving portion and the frame memory; wherein the frame memory updates and stores the image quality-processed horizontal line image data into a corresponding horizontal line therein, and wherein image data of a nrefresh frame updated in the frame memory are transmitted to the data driving portion in a unit of one horizontal line when an image of a n+1refresh frame is identical to an image of the nrefresh frame.

Display apparatus

A display device includes a display panel displaying an image using a gate signal and a data signal. The display device includes a gate driving circuit generating the gate signal using a gate control signal. The display device includes a data driving circuit generating the data signal using a data control signal and an image data Application. The display device includes a timing controlling circuit generating the gate control signal, the data control signal, and the image data using an image signal and a plurality of timing signals. The timing controlling circuit is further configured to transmit the gate control signal, the data control signal, and the image data with a variable refresh rate profile different based on a temperature.

Display device operated with variable refresh rate and method of driving the same

A display device includes a timing controlling unit configured to generate an image data, a data control signal and a gate control signal; a data driving unit configured to generate a data signal using the image data and the data control signal; a gate driving unit configured to generate a gate1 signal, an odd gate2 signal, an even gate2 signal, a gate3 signal, a gate4 signal and an emission signal using the gate control signal; and a display panel displaying an image using the gate1 signal, the odd gate2 signal, the even gate2 signal, the gate3 signal, the gate4 signal and the emission signal. A rising timing of the emission signal and a falling timing of the gate3 signal are changed according to a duty ratio.

Display device

A power supply includes a boost circuit having a first boost circuit configured to output a first driving voltage to be supplied to the display panel by stepping unit an input voltage and a second boost circuit configured to output a second driving voltage to be supplied to the display panel by stepping down the input voltage, and a correction circuit configured to output a correction signal based on a result obtained by sensing the input voltage, and controls output efficiency of the boost circuit based on the input voltage and current sensed from the display panel.

Power supply and display device including the same

A driving circuit for a display device, for reducing power consumption of a data driver, and a method of driving the driving circuit are disclosed. The driving circuit includes a data driver for maintaining buffers of the data driver in an on state every preset specific frame period and maintaining the buffers in an off state every remaining period except for specific frame periods in a refresh mode for processing image data of one image for the specific frame periods only.

Growing community of inventors

Seoul, South Korea

Nak-Yoon Kim