BACKLIGHT DEVICE AND MEMBER

摘要

Provided is a direct-lighting backlight device (1) composed of a light source (13), a diffuser plate (14) arranged on the light source, and an optical member (15) arranged on the diffuser plate, or an edge-light type backlight device composed of a light guide plate and an optical member arranged on the light guide plate. A surface of the optical member (15) in contact with the diffuser plate or the light guide plate (hereinafter, referred to as the optical element) is formed of a material containing a thermosetting resin and/or a thermoplastic resin and a material containing polyethylene wax particles having an average particle diameter of 4-10µm. The content of the polyethylene wax particles is 0.20-0.50 parts by weight to a resin component of 100 parts by weight. When a molding composed of an amorphous olefin resin or a polycarbonate resin is used as the optical element, adhesion of the optical element and the optical member (15) in contact with the optical element is prevented, and furthermore, scratches on the optical element, i.e., the molding composed of the optical member (15), are reduced.