Abstract: A backlight unit includes a light guide plate 16, LEDs 17, a chassis 14, a frame 13 and positioning members 30. The light guide plate 16 includes two edge surfaces that are light entrance surfaces 16b and a front surface that is a light exit surface. The LEDs 17 are arranged to be opposed to the light entrance surfaces 16b and in a portion of the light guide plate 16 except for four corner portions 16d of the light guide plate 16. The chassis 14 is arranged on an opposite side of the light guide plate 16 from the light exit surface. The frame 13 is arranged on a light exit surface side to have the light guide plate 16 and the LEDs 17 between the frame 13 and the chassis 14. The positioning members 30 are arranged on an inner surface of the frame 13 to be opposed to the respective four corner portions 16d of the light guide plate 16.

Abstract: A liquid crystal display device is provided with: a light-emitting diode LED; a liquid crystal panel; a light guide plate having an end surface that is disposed in such a manner as to face the LED, and having edge portions that are disposed further to the outside than the ends of the liquid crystal panel; holding members comprising a frame and a chassis that hold the liquid crystal panel and the light guide plate in a form in which the liquid crystal panel and the light guide plate are sandwiched between a display surface and the opposite side thereof, and accommodating the LED therebetween; panel pressing sections provided to the frame; second screw attachment sections provided to the frame; second screw members that are attached to the second screw attachment sections, and secure the frame and chassis in an assembled state by sandwiching at least the chassis between the second screw attachment sections; and hole-like sections that are provided to the edge portions of the light guide plate, and through which

Abstract: A liquid crystal display device includes a backlight device; a liquid crystal panel; a chassis which is made of metal and further includes a chassis plate part, and chassis side-plates; a bezel which is made of metal and further includes a bezel frame-shaped part, and a bezel tube-shaped part; a front-side cabinet which configures an exterior appearance of the liquid crystal display device, is made of a resin, covers the bezel, and further includes an exterior frame shaped part, and an exterior tube-shaped part; positioning sections which are disposed in a form of protruding from the exterior frame-shaped part toward the chassis side, and which position the liquid crystal panel in a display face direction; and contact sections which are positioned in opposition to the positioning sections side with respect to each of the bezel tube-shaped part and the side-plates, and which make contact with both the side-plates and the exterior tube-shaped part.

Abstract: A backlight unit includes a light guide plate 16, LEDs 17, a chassis 14, a frame 13 and positioning members 30. The light guide plate 16 includes two edge surfaces that are light entrance surfaces 16b and a front surface that is a light exit surface. The LEDs 17 are arranged to be opposed to the light entrance surfaces 16b and in a portion of the light guide plate 16 except for four corner portions 16d of the light guide plate 16. The chassis 14 is arranged on an opposite side of the light guide plate 16 from the light exit surface. The frame 13 is arranged on a light exit surface side to have the light guide plate 16 and the LEDs 17 between the frame 13 and the chassis 14. The positioning members 30 are arranged on an inner surface of the frame 13 to be opposed to the respective four corner portions 16d of the light guide plate 16.

Abstract: A liquid crystal display device is provided with: a light-emitting diode LED; a liquid crystal panel; a light guide plate having an end surface that is disposed in such a manner as to face the LED, and having edge portions that are disposed further to the outside than the ends of the liquid crystal panel; holding members comprising a frame and a chassis that hold the liquid crystal panel and the light guide plate in a form in which the liquid crystal panel and the light guide plate are sandwiched between a display surface and the opposite side thereof, and accommodating the LED therebetween; panel pressing sections provided to the frame; second screw attachment sections provided to the frame; second screw members that are attached to the second screw attachment sections, and secure the frame and chassis in an assembled state by sandwiching at least the chassis between the second screw attachment sections; and hole-like sections that are provided to the edge portions of the light guide plate, and through which

Abstract: This liquid crystal display device is provided with: an LED; a liquid crystal panel; a light guide plate; a metal chassis disposed on the reverse side of the light guide plate from the liquid crystal panel, the chassis having a step provided by bending a bottom plate, and the bottom plate being sectioned into a first bottom plate part and a second bottom plate part by the step; an LED substrate attached to the first bottom plate part, the LED being arranged on a plate surface of the LED substrate; and a frame for accommodating the liquid crystal panel, the LED, the light guide plate, and the LED substrate so as to enclose these accommodated components between the frame and the first bottom plate part while abutting the second bottom plate part, the frame being arranged on a display surface side with respect to the liquid crystal panel. By the present invention, the temperature of the frame can be prevented from becoming too high in a display device of a type not provided with a cabinet.

Abstract: To alleviate brightness unevenness arising from optical sheet bending or wrinkling, as well as brightness unevenness caused by light leakage, and improve light usage emitted by a light source unit, provided is a backlight unit (1) comprising a light guide plate alignment unit (5) which is positioned to maintain a given location with respect to a back chassis (10), latches with a depression part (23), and further comprising a depression part (51) which is formed such that a portion of an optical sheet (4) is inserted.