Illumination device and display device

#Embodiments described herein relate generally to an illumination device and a display device.

#In recent years, a liquid crystal display device using a liquid crystal panel for display has been known as a display device mounted on a television, an information device, or the like. For the display quality of such a liquid crystal display device, there is an increasing demand for increase in the brightness of an illumination device used in the liquid crystal display device, and a direct type illumination device in which a light source is disposed directly under a liquid crystal panel with a light guide interposed therebetween has been studied.

#FIG. 1 is a block diagram showing a display device DSP according to the present embodiment.

#FIG. 2 is an exploded perspective view showing an illumination device IL shown in FIG. 1.

#FIG. 3 is a plan view showing a part of the illumination device IL according to the present embodiment.

#In general, according to one embodiment, an illumination device comprises a wiring board; a plurality of light emitting elements that are disposed on a main surface of the wiring board; a light diffusion distance maintaining layer that is provided above the light emitting elements; a wavelength conversion layer that is provided above the light diffusion distance maintaining layer; and a prism sheet that is provided above the wavelength conversion layer, wherein the main surface of the wiring board is divided into a plurality of segment regions, n (n>1) light emitting elements are provided in each of the segment regions, the light emitting elements are independently driven in units of the segment regions, and a thickness of the light diffusion distance maintaining layer is ½ times or more a pitch of the segment regions adjacent to each other.

#The present embodiment provides an illumination device with improved illumination quality and a display device including the illumination device.

#Embodiments will be described hereinafter with reference to the accompanying drawings. The disclosure is merely an example, and proper changes within the spirit of the invention, which are easily conceivable by a skilled person, are included in the scope of the invention as a matter of course. In addition, in some cases, in order to make the description clearer, the widths, thicknesses, shapes, etc., of the respective parts are schematically illustrated in the drawings, compared to the actual modes. However, the schematic illustration is merely an example, and adds no restrictions to the interpretation of the invention. Besides, in the specification and drawings, the same or similar elements as or to those described in connection with preceding drawings or those exhibiting similar functions are denoted by like reference numerals, and a detailed description thereof is omitted unless otherwise necessary.