Liquid crystal display device and driving method thereof

Abstract

The invention discloses a liquid crystal display device. The liquid crystal display device comprises a gamma generator (50) and a liquid crystal display panel (40); the gamma generator (50) comprises a first storage unit (51) and a second storage unit (52); the first storage unit (51) stores a set of positive gamma voltage values or a set of negative gamma voltage values; the second storage unit (52) stores a set of negative gamma voltage values or the positive gamma voltage values; the gamma generator (50) periodically obtains the set of positive gamma voltage values or negative gamma voltage values from the first storage unit (51) or periodically obtains the set of negative gamma voltage values or positive gamma voltage values from the second storage unit (52) on the basis of control of polarity energizing signals; the liquid crystal display panel (40) carries out image display on the basis of one set of positive gamma voltage values and / or negative gamma voltage values. Compared with the prior art, the liquid crystal display device can effectively reduce the cost, meanwhile, the driving structure is simplified, the wiring area is reduced, and narrow-frame design is facilitated.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal display, and in particular relates to a liquid crystal display device and a driving method thereof. Background technique [0002] With the evolution of optoelectronics and semiconductor technology, it has also led to the vigorous development of Flat Panel Display. Among many flat panel displays, Liquid Crystal Display (LCD for short) has high space utilization efficiency and low consumption. Power, no radiation and low electromagnetic interference and many other superior features have become the mainstream of the market. [0003] A liquid crystal display device generally includes a liquid crystal display panel (Liquid Crystal Panel) and a backlight module (Black Light Module, BL for short). Since the liquid crystal display panel itself does not have the characteristic of self-illumination, the backlight module must be arranged under the liquid crystal display panel to provide the surface l...

AI Technical Summary

Problems solved by technology

[0007] In order to deliver all the Gamma voltages to the data driver 120, there are many wires connected to the data driver 120. For example, the positive Gamma voltage group has 10 positive Gamma voltages, and the negative Gamma voltage group has 10 negative Gamma voltages. There must be at least 20 memory selection pins set outside the generator 150, and at least 20 wires connected to the data driver 120, which will cause a complicated driving structure and increase the wiring area on the liquid crystal display panel. It is conducive to the narrow frame design of the liquid crystal display device, and the number of wiring is large, which will increase the cost