1. Field of the Invention
The present invention relates to a display device and a backlight module thereof, and more particularly, to a backlight module providing a backlight source to a liquid crystal display panel for generating a two-dimensional/three-dimensional switchable display effect and a display device including the backlight module.
2. Description of the Prior Art
The principle of stereoscopic display technology includes respectively delivering different images to a left eye and a right eye of a viewer, giving the viewer a feeling of gradation and depth in the images, and generating the stereoscopic effect in the cerebrum of the viewer by the analyzing and overlapping of images separately received by the left eye and the right eye.
In general, the stereoscopic display technologies may be substantially divided into two major types, which are the glasses type and the naked-eye type (autostereoscopic type). Recently, the parallax barrier type stereoscopic display technology and the lenticular lens type stereoscopic display technology are the popular naked-eye type stereoscopic display technologies. In the parallax barrier type and the lenticular lens type stereoscopic display technologies, stripe barrier patterns or lenticular lenses are disposed in front of a general display panel, and one eye of a viewer may receive images different from those received by another eye of the viewer. The different images received respectively by two eyes of the viewer may be integrated in the viewer's brain to generate stereoscopic display effect. In the conventional naked-eye type stereoscopic display technologies, two adjacent pixels are used to respectively provide different images to the left eye and the right eye at the same time resulting in the perceived resolution becoming lower than the actual resolution of the display panel, and the display quality may then be seriously influenced.