Abstract: According to one embodiment, a backlight device includes a light guide including an emission surface including a flat area and an inclined area inclined in an out-of-plane direction from an edge of the flat area, a light source emitting light into the light guide, and an optical diffusion sheet on the emission surface. The optical diffusion sheet includes a diffusion flat area overlapping the flat area of the emission surface and a diffusion inclined area overlapping the inclined area of the emission surface, and a haze of the diffusion inclined area is higher than that of the diffusion flat area.

Abstract: According to one embodiment, a backlight device includes a light guide including an emission surface including a flat area and an inclined area inclined in an out-of-plane direction from an edge of the flat area, a light source emitting light into the light guide, and an optical diffusion sheet on the emission surface. The optical diffusion sheet includes a diffusion flat area overlapping the flat area of the emission surface and a diffusion inclined area overlapping the inclined area of the emission surface, and a haze of the diffusion inclined area is higher than that of the diffusion flat area.

Abstract: According to one embodiment, a backlight device includes a light guide including an emission surface including a flat area and an inclined area inclined in an out-of-plane direction from an edge of the flat area, a light source emitting light into the light guide, and an optical diffusion sheet on the emission surface. The optical diffusion sheet includes a diffusion flat area overlapping the flat area of the emission surface and a diffusion inclined area overlapping the inclined area of the emission surface, and a haze of the diffusion inclined area is higher than that of the diffusion flat area.

Abstract: According to one embodiment, a backlight device includes a support frame including a first frame body including a pair of first frame members and a second frame member connected to respective ends of the first frame members and a second frame body being separate from the first frame body, which connects other respective ends of the first frame members to each other, a reflective sheet on the support frame, a light guide on the reflective sheet within the support frame, an optical sheet on the light guide, and a light source unit in the support frame. The light source unit includes a wiring board on the second frame body and a light source on the wiring board, opposing an incidence surface of the light guide.

Abstract: According to one embodiment, an illumination device includes a light guide, a light source device and an optical sheet. The light guide has an emission surface and side surfaces which intersect the emission surface, and at least one side surface is located inside a display area. The light source device emits light to the light guide. The optical sheet is provided on the emission surface and is opposed to the display area. The optical sheet has an edge portion which covers an area between the one side surface and an edge of the display area, and a transmittance adjustment area which is provided in the edge portion and reduces a transmittance of the edge portion.

Abstract: According to one embodiment, a backlight device includes a support frame including a first frame body including a pair of first frame members and a second frame member connected to respective ends of the first frame members and a second frame body being separate from the first frame body, which connects other respective ends of the first frame members to each other, a reflective sheet on the support frame, a light guide on the reflective sheet within the support frame, an optical sheet on the light guide, and a light source unit in the support frame. The light source unit includes a wiring board on the second frame body and a light source on the wiring board, opposing an incidence surface of the light guide.

Abstract: According to one embodiment, a backlight device includes a support frame including a first frame body including a pair of first frame members and a second frame member connected to respective ends of the first frame members and a second frame body being separate from the first frame body, which connects other respective ends of the first frame members to each other, a reflective sheet on the support frame, a light guide on the reflective sheet within the support frame, an optical sheet on the light guide, and a light source unit in the support frame. The light source unit includes a wiring board on the second frame body and a light source on the wiring board, opposing an incidence surface of the light guide.

Abstract: According to one embodiment, a backlight device includes a light guide including an emission surface including a flat area and an inclined area inclined in an out-of-plane direction from an edge of the flat area, a light source emitting light into the light guide, and an optical diffusion sheet on the emission surface. The optical diffusion sheet includes a diffusion flat area overlapping the flat area of the emission surface and a diffusion inclined area overlapping the inclined area of the emission surface, and a haze of the diffusion inclined area is higher than that of the diffusion flat area.

Abstract: According to one embodiment, an illumination device includes a light guide, a light source device and an optical sheet. The light guide has an emission surface and side surfaces which intersect the emission surface, and at least one side surface is located inside a display area. The light source device emits light to the light guide. The optical sheet is provided on the emission surface and is opposed to the display area. The optical sheet has an edge portion which covers an area between the one side surface and an edge of the display area, and a transmittance adjustment area which is provided in the edge portion and reduces a transmittance of the edge portion.

Abstract: According to one embodiment, a backlight device includes a support frame including a first frame body including a pair of first frame members and a second frame member connected to respective ends of the first frame members and a second frame body being separate from the first frame body, which connects other respective ends of the first frame members to each other, a reflective sheet on the support frame, a light guide on the reflective sheet within the support frame, an optical sheet on the light guide, and a light source unit in the support frame. The light source unit includes a wiring board on the second frame body and a light source on the wiring board, opposing an incidence surface of the light guide.

Abstract: A display device is provided which offers double-sided display and achieves a thin structure and also which prevents deterioration in display quality of each of front and back display units when an illumination unit such as a backlight is shared by these display units. The display device includes a first display unit having a display surface on the front surface thereof; a second display unit having a display surface on the rear surface thereof; and a common illumination unit interposed between the first display unit and the second display unit, for illuminating both the first display unit and the second display unit with light. A transflector is interposed between the second light-emitting surface of the light-guiding member and the second display unit.

Abstract: A display device is provided which offers double-sided display and achieves a thin structure and also which prevents deterioration in display quality of each of front and back display units when an illumination unit such as a backlight is shared by these display units. The display device includes a first display unit having a display surface on the front surface thereof; a second display unit having a display surface on the rear surface thereof; and a common illumination unit interposed between the first display unit and the second display unit, for illuminating both the first display unit and the second display unit with light. A transflector is interposed between the second light-emitting surface of the light-guiding member and the second display unit.

Abstract: A display device is provided which offers double-sided display and achieves a thin structure and also which prevents deterioration in display quality of each of front and back display units when an illumination unit such as a backlight is shared by these display units. The display device includes a first display unit having a display surface on the front surface thereof; a second display unit having a display surface on the rear surface thereof; and a common illumination unit interposed between the first display unit and the second display unit, for illuminating both the first display unit and the second display unit with light. A transflector is interposed between the second light-emitting surface of the light-guiding member and the second display unit.

Abstract: A light emitting device includes a light source and a light guide body having a light guiding surface from which light emitted from the light source is received and having a light emitting surface from which the received light is emitted. A plurality of rows of light source arrays each formed by a plurality of the light sources are provided on the light guiding surface.

Abstract: A display device is provided which offers double-sided display and achieves a thin structure and also which prevents deterioration in display quality of each of front and back display units when an illumination unit such as a backlight is shared by these display units. The display device includes a first display unit having a display surface on the front surface thereof; a second display unit having a display surface on the rear surface thereof; and a common illumination unit interposed between the first display unit and the second display unit, for illuminating both the first display unit and the second display unit with light. The illumination unit includes a light-guiding member having a first light-emitting surface opposed to the first display unit and a second light-emitting surface opposed to the second display unit, and a transflector is interposed between the second light-emitting surface of the light-guiding member and the second display unit.

Abstract: A light emitting device includes a light source and a light guide body having a light guiding surface from which light emitted from the light source is received and having a light emitting surface from which the received light is emitted. A plurality of rows of light source allays each formed by a plurality of the light sources are provided on the light guiding surface.

Abstract: An illuminating device is provided for use as a backlight of a liquid crystal display, and has a plurality of light sources and a light guiding plate emitting lights from the light sources outward. At least one of the light sources is configured to be lighted independently from the rest of the light sources. This illuminating device is applied to equipment such as a two surface display type cellular phone and is disposed between a main panel and a sub-panel to illuminate both panels. All light sources may be used to illuminate the main panel when the main panel is used, and some of the light sources may be used to illuminate only an area of the sub-panel when the sub-panel is used so that effective illumination may be implemented. Accordingly, light sources need not to be unnecessarily lighted when the sub-panel is used, which leads to low power consumption.

Abstract: A display device is provided which offers double-sided display and achieves a thin structure and also which prevents deterioration in display quality of each of front and back display units when an illumination unit such as a backlight is shared by these display units. The display device includes a first display unit having a display surface on the front surface thereof; a second display unit having a display surface on the rear surface thereof; and a common illumination unit interposed between the first display unit and the second display unit, for illuminating both the first display unit and the second display unit with light. A transflector is interposed between the second light-emitting surface of the light-guiding member and the second display unit.

Abstract: An illuminating device is provided for use as a backlight of a liquid crystal display, and has a plurality of light sources and a light guiding plate emitting lights from the light sources outward. At least one of the light sources is configured to be lighted independently from the rest of the light sources. This illuminating device is applied to equipment such as a two surface display type cellular phone and is disposed between a main panel and a sub-panel to illuminate both panels. All light sources may be used to illuminate the main panel when the main panel is used, and some of the light sources may be used to illuminate only an area of the sub-panel when the sub-panel is used so that effective illumination may be implemented. Accordingly, light sources need not to be unnecessarily lighted when the sub-panel is used, which leads to low power consumption.

Abstract: A display device is provided which offers double-sided display and achieves a thin structure and also which prevents deterioration in display quality of each of front and back display units when an illumination unit such as a backlight is shared by these display units. The display device includes a first display unit having a display surface on the front surface thereof; a second display unit having a display surface on the rear surface thereof; and a common illumination unit interposed between the first display unit and the second display unit, for illuminating both the first display unit and the second display unit with light. The illumination unit includes a light-guiding member having a first light-emitting surface opposed to the first display unit and a second light-emitting surface opposed to the second display unit, and a transflector is interposed between the second light-emitting surface of the light-guiding member and the second display unit.