Provided is a liquid crystal display device 1 equipped with a backlight device 3 and a liquid crystal panel 2. The punch-through voltage of a transfer transistor is increased, and the potential barrier is heightened between the photodiode and the floating diffusion region during the turn-off of the transfer transistor so as to increase the charge accumulation amount of the photodiode, while the photodiode is formed without resorting to a self-aligned ion-implantation. The actions include making a price comparison inquiry to a central server for the product, service, or price information. A user may preview the name, URL, and descriptive material before accessing the URL link.