According to one embodiment, in an embodiment of the present invention, simultaneous lighting of fluorescent tubes constituting a backlight unit is ensured, and the value of a product is increased. In one embodiment, wind turbines are used to generate electricity and compressed air energy, wherein the compressed air energy is used to co-generate electricity and chilled air. This therefore provides an efficient and improved method for effectively recovering most valuable substances from the alkaline waste solution, so that economic benefits in recovery are greatly raised. After the image-stick test frame is displayed for a while, an image-stick region and a non-image-stick region are formed on the display.