Liquid crystal display device and liquid crystal lens

A liquid crystal display device comprising a liquid crystal lens, a liquid crystal display panel, and a backlight,

• wherein the liquid crystal lens includes an upper substrate, a lower substrate, and a liquid crystal layer sandwiched between the upper substrate and the lower substrate,
• wherein a protective film is bonded onto the upper substrate via a bonding material for protective film, and
• wherein the protective film has a function of blocking ultraviolet light with a wavelength of 340 nm or shorter,
• wherein the liquid crystal display panel includes a TFT substrate, an opposing substrate, a lower polarizing plate bonded onto the TFT substrate, an upper polarizing plate bonded onto the opposing substrate, and a liquid crystal layer sandwiched between the TFT substrate and the opposing substrate,
• wherein the liquid crystal lens is bonded onto the upper polarizing plate of the liquid crystal display panel with a bonding material or an adhesive material, and
• wherein, of the liquid crystal lens, the upper substrate including the protective film has a thickness larger than 0.2 mm and less than or equal to 1.5 mm and is thicker than the lower substrate of the liquid crystal lens.