Samsung Display Co., Ltd.

Samsung Displayco., Ltd.

Wonjong Ohn

Youngjin Kim

Jaemin Ha

Joonbum Lee

Moah Choi

Taekyoung Kim

Dong Keon Kim

A display device includes a data driver which outputs a data voltage of a positive polarity or a negative polarity to a data line based on the polarity control signal by a horizontal period, and a number of a positive horizontal period, in which the data voltage of the positive polarity is outputted to the data line, in a frame period is different from a number of a negative horizontal period, in which the data voltage of the negative polarity is outputted to the data line, in the frame period when the frame image data satisfy a condition of an afterimage pattern.

Display device and method of driving the same

An LCD device and a method of driving the LCD device that reduce scattering afterimages, the LCD device including: a liquid crystal display panel including a gate line, a data line intersecting the gate line and a pixel connected to the gate line and the data line; a timing controller receiving a data signal including a plurality of frames and outputting a data signal; a power supply generating a gamma reference voltage corresponding to the data signal; and a data driver receiving the data signal, receiving the gamma reference voltage corresponding to the data signal from the power supply and applying a data voltage to the data line. The timing controller includes: an analyzer comparing the data signal with an afterimage reference pattern; a determinator determining an afterimage vulnerable data signal of the data signal; and a control signal output circuit outputting a gamma reference voltage control signal increasing and decreasing a gamma reference voltage by a variable data voltage on a frame-by-frame basis in accordance with the afterimage vulnerable data signal. The power supply includes a gamma reference voltage adjuster receiving the gamma reference voltage control signal to adjust the gamma reference voltage.

Liquid crystal display device and method of driving the same

Growing community of inventors

Seongnam-si, South Korea

Wonjong Ohn