The invention provides a liquid crystal display device and electronic equipment. The liquid crystal display device comprises a back plate, an optical assembly and a display panel, wherein the back plate comprises a bottom plate, a side plate surrounding the edge of the bottom plate, and a cover plate arranged on the side, deviating from the bottom plate, of the side plate; the cover plate and thebottom plate are arranged opposite to each other; the bottom plate, the side plate and the cover plate form an accommodation cavity; the optical assembly is arranged in the accommodation cavity; the edge of the optical assembly is inserted between the bottom plate and the cover plate; and the surface, deviating from the bottom plate, of the cover plate is covered with the display panel. The technical scheme of the invention provides a liquid crystal display device with a simple structure.