Backlight device and a liquid crystal display device

A backlight device comprising:

• a case having a bottom plate;
• a light guide including a front surface as an emission surface, a rear surface opposed to the front surface, and an incidence surface provided between the front surface and the rear surface, the rear surface being arranged on the bottom plate;
• and
• a plurality of light-emitting elements facing the incident surface of the light guide, wherein
• each of the light-emitting elements includes a first surface provided at a bottom of each of the light-emitting elements, and a light-emitting surface facing the incidence surface of the light guide,
• each of the first surfaces and the rear surface are arranged side by side, and fixed to a fixing tape attached over each of the first surfaces and the rear surface of the light guide, and
• a light-shielding tape is facing the fixing tape through the light guide and the light-emitting elements.