Liquid crystal display and driving method of same

Abstract

A liquid crystal display and a driving method of the same are provided, and which drive scanning lines and data lines by a timing controller. When writing data signals to a liquid crystal capacitor, the timing controller controls a source driving circuit to provide the data signals to each data line, and control a gate driving circuit to generate a high-voltage signal to each scanning line in sequence. The high-voltage signals of two adjacent scanning lines overlap. When the high-voltage signals overlap, the timing controller transmits the data signal to each liquid crystal capacitor sequentially. After finishing writing data signals to the liquid crystal capacitor, the timing controller controls the gate driving circuit to generate a pulse signal to each scanning line continuously. The pulse signals generated by the scanning lines do not overlap. Accordingly, it can avoid the leakage of data signal stored in the liquid crystal capacitors.

Description

technical field [0001] The invention provides a liquid crystal display device and a driving method thereof, in particular to a low power consumption liquid crystal display device and a driving method thereof. Background technique [0002] With the development of liquid crystal display devices, more and more attention has been paid to low power consumption liquid crystal display devices. Especially in miniaturized electronic devices (such as electronic tags, smart phones, and tablet computers), the power consumption of the liquid crystal display device directly affects the battery life of the entire electronic device. [0003] The liquid crystal display device usually has a certain driving frequency (framerate). Generally speaking, the frequency used by the liquid crystal display device is about 50-70 hertz (Hz), that is, drives 50-70 frames per second. To obtain a liquid crystal display device with lower power consumption, an effective way is to reduce the driving frequency...

AI Technical Summary

Problems solved by technology

As the driving frequency gradually decreases, the negative bias stress on the gate terminal of the thin film transistor becomes larger and larger, so that the I-Vcurve of the thin film transistor gradually shifts from the curve N to the curve NG, causing the initial voltage (threshold voltage) to shift to the left shift, and the problem of subthreshold slope degradation

When the thin film transistor is turned off (turn-off), its leakage current will become more and more serious, resulting in the failure of the liquid crystal capacitor electrically connected to the thin film transistor to maintain the correct charge

Images