Display device and game machine

A display device, comprising:

• a first display panel including an image display area in which an image is displayable;
• a light guide plate arranged at a back of the first display panel, the light guide plate comprising a transparent material;
• a plurality of light sources respectively facing a plurality of positions on side surfaces of the light guide plate;
• a second display panel that is a liquid crystal display arranged at a back of the light guide plate, the second display panel being configured to display an image viewable through the light guide plate and the first display panel;
• and
• a controller configured to control turning on and turning off of the plurality of light sources and to control a first image displayed on the first display panel and a second image displayed on the second display panel,
• wherein the light guide plate includes
• an emission surface facing the first display panel,
• a diffusion surface facing the second display panel, and
• a plurality of prisms respectively arranged in a plurality of partial areas of the diffusion surface respectively corresponding to the plurality of light sources, and
• each of the plurality of prisms is configured to illuminate a portion of the image display area of the first display panel corresponding to a corresponding one of the partial areas with light emitted from a corresponding one of the light sources and entering the light guide plate.