TRANSPARENT DISPLAY APPARATUS AND METHOD FOR DRIVING TRANSPARENT DISPLAY PANEL THEREOF

A transparent display apparatus and a method for driving a transparent display panel thereof are provided. The transparent display apparatus includes a first and second transparent display panels, an image processor and a display driver. The image processor receives an image signal having display data, a transparency control signal having transparent values, a first and second transparent parameters. The image processor calculates according to the image signal, the transparency control signal, the first and second transparent parameters to provide a first display signal having first gray data and a second display signal respectively having second gray data. The display driver drives the first and second transparent display panels according to the first and second gray data, so as to display a display image having all gradations between a black state, a white state and a transparent state through the coincided first and second transparent display panels.