Abstract: A back light unit (lighting device) 12 includes an LED (light source) 17, a light guide plate 16 including a light entrance surface 16b and a light exit surface 16a, LED boards 18 each including a plate surface facing the light entrance surface 16b and board relay terminals 22 configured to relay power to the LED 17, and a relay wiring member (relay member) 28 electrically connecting between the board relay terminals 22 and a power source board (power) PWB. The light entrance surface 16b faces the LED 17. The light from the LED 17 enters the light guide plate 16 through the light entrance surface 16b and exits through the light exit surface 16a. The LED 17 is mounted on the plate surface of the LED board 18. The board relay terminals 22 are arranged such that the relay wiring member 28 that is orientated to either one of sides in the thickness direction of the light guide plate 18 is allowed to be connected to the board relay terminals 22.

Abstract: A liquid crystal display device 10 includes LEDs 17, a light guide plate 16, a mating portion 33, a positioning portion 34, a heat dissipation member 19 on which the LEDs 17 are mounted, and a restriction portion 35. The light guide plate 16 includes a peripheral surface facing the LEDs 17 and configured as a light entrance surface 16b through which light from the LEDs 17 enters and a plate surface configured as a light exit surface 16a through which light exits. The mating portion 33 protrudes from a portion of a peripheral surface 16e of the light guide plate 16 adjacent to the light entrance surface 16b or is a recess formed in the peripheral surface 16e adjacent to the light entrance surface 16b. The positioning portion 34 is fitted with the mating portion 33 as a protrusion and recess fitting such that the light guide plate 16 is positioned with respect to an arrangement direction of the LEDs 17 and the light guide plate 16.

Abstract: A back light unit (lighting device) 12 includes an LED (light source) 17, a light guide plate 16 including a light entrance surface 16b and a light exit surface 16a, LED boards 18 each including a plate surface facing the light entrance surface 16b and board relay terminals 22 configured to relay power to the LED 17, and a relay wiring member (relay member) 28 electrically connecting between the board relay terminals 22 and a power source board (power) PWB. The light entrance surface 16b faces the LED 17. The light from the LED 17 enters the light guide plate 16 through the light entrance surface 16b and exits through the light exit surface 16a. The LED 17 is mounted on the plate surface of the LED board 18. The board relay terminals 22 are arranged such that the relay wiring member 28 that is orientated to either one of sides in the thickness direction of the light guide plate 18 is allowed to be connected to the board relay terminals 22.

Abstract: A lighting device configured to produce light in a substantially uniform overall color includes a plurality of light source boards and a plurality of point light sources. The point light sources are mounted on the light source boards. An average color of the point light sources is in an equivalent color range. The equivalent color range is defined by a square with two sides that are opposed sides each having an X-axis coordinate length of 0.015 and two sides that are opposed sides each having a Y-axis coordinate length of 0.015 in the CIE 1931 color space chromaticity diagram.

Abstract: An illumination device 12 includes a light source 17; a light guide plate 16 having a light-receiving face 16b and a light-exiting surface 16a; a chassis 14 having a body 141 covering a rear surface 16c of the light guide plate 16, a strip-shaped projecting part 142 projecting beyond the light-receiving face 16b, and a straight edge 143 extending in a straight line parallel with the light-receiving face 16b; a light source support member 19 having a support part 191 supporting the light source 17, and an attachment part 192 having an edge 193 that extends beyond the straight edge 143 of the chassis 14 and that extends in a straight line parallel with this straight edge 143, the attachment part 192 being attached to the front side of the projecting part 142; a screw 21 penetrating the projecting part 142 and the attachment part 192 from the rear side of the projecting part 142; and a screw-receiving part 131 that clamps the projecting part 142 and the like between the screw 21 and the screw-receiving part 131

Abstract: A backlight device 24 of the present invention includes: a chassis 22 that has a bottom plate 22a, and a side wall 22b that rises on the front side of the bottom plate 22a from an edge of the bottom plate 22a; a light guide plate 20 that has a light-receiving face 20a, a light-exiting surface 20b, and an opposite surface 20c, and that is arranged such that the opposite surface 20c faces the surface of the bottom plate 22a; an LED substrate 30 that is arranged on the surface the bottom plate 22a and that abuts the side wall 22b; an LED light source 28 arranged on a front face of the LED substrate 30; a frame 14 arranged above the light-exiting surface 20b of the light guide plate 20; a first inclined portion 31 that is provided on the frame 14 and that inclines from the light guide plate 20 side towards the side wall 22b and from the bottom plate 22a side towards the light-exiting surface 20b; and a first abutting portion 41 that is arranged on the LED substrate 30 and that has a least a portion thereof abutti

Abstract: In the disclosed direct-lighting illumination device and liquid crystal display device provided with said illumination device, in order to obtain an illumination device of which, image unevenness stemming from connector sections of the light-source-mounting substrates is decreased and the brightness on the display screen thereof is even, the illumination device (BL1, BL2, BL3, BL4) is configured with: a light-emitting surface section formed by assembling a plurality of light-source-mounting substrates (20) that are modularized and that are provided with input/output connectors (21) and a substrate (2) that mounts a plurality of point light sources (3); a reflective sheet (4) that has apertures that expose each point light source being laid over the light-emitting surface section; the connectors (21) being disposed only at the peripheral region of the light-emitting surface section; and the connectors (21) being covered by a reflective side wall (41).

Abstract: An optical member comprises a diffusion layer (13) diffusing emitted light from light sources (12), a first light collection layer (15), in which first projecting portions (15a) extending in a Y-direction are arranged at intervals (T1), refracting and collecting incident light from the diffusion layer (13), a first reflection layer (14) having first reflective portions (14a) facing boundaries between the adjacent first projecting portions (15a) and reflecting emitted light from the diffusion layer (13), a second light collection layer (17), in which second projecting portions (17a) extending in an X-direction are arranged at intervals (T2), refracting and collecting incident light from the first light collection layer (15), and a second reflection layer (16) having second reflective portions (16a) facing boundaries between the adjacent second projecting portions (17a) and reflecting emitted light from the first light collection layer (15).

Abstract: Disclosed are: a lighting device that stably supplies high-quality surface light; a lighting set that is one part of the lighting device; and a display device equipped with the lighting device. In an LED package (PG), supporting sections (13) cause LED chips (11) to be inclined with respect to the bottom surface (41B) of a backlight chassis (41).

Abstract: A backlight device is provided that can prevent the number of production steps from being increased and that can reduce the unevenness of the brightness of a display panel. This backlight device (20) includes a substrate (22) on which a plurality of LEDs (21) are mounted and connectors (23) which are arranged on the substrate. A lluminous flux in the vicinity of the connectors is higher than a luminous flux in an area other than the vicinity of the connectors.

Abstract: The present invention provides a lighting device configured to produce light with a substantially averaged overall color. The lighting device 12 of the present invention includes a plurality of point light sources 17 and a chassis 14 that houses the point light sources 17. The point light sources 17 are classified in two or more color ranges A, B, and C according to colors of light. Each color range has a range defined by a square with sides each having a length of 0.01 in the EIC 1931 color space chromaticity diagram. The point light sources 17 in the different color ranges A, B, and C are housed in the chassis 14.

Abstract: A lighting device configured to produce light in a substantially uniform overall color includes a plurality of light source boards and a plurality of point light sources. The point light sources are mounted on the light source boards. An average color of the point light sources is in an equivalent color range. The equivalent color range is defined by a square with two sides that are opposed sides each having an X-axis coordinate length of 0.015 and two sides that are opposed sides each having a Y-axis coordinate length of 0.015 in the CIE 1931 color space chromaticity diagram.

Abstract: An illumination device includes a chassis 22 on which lamps 21 are arranged on the front side, an optical member 24 arranged in a position opposed to the chassis 22 across the lamps 21, lamp clips 30 that have protruding pins 34 protruding toward the optical member 24 and are attached to the chassis 22 to retain the lamps 21, and cushions 40 arranged between the lamp clips 30 and the chassis 22. According to such a configuration, the vibration of the lamp clips 30 is absorbed by the cushions 40. Therefore, since it is possible to suppress a creak compared with the case in which the lamp clips 30 and the chassis 22 directly rub against each other, it is possible to prevent the deterioration in quality.

Abstract: A lighting unit 12 in accordance with the present invention includes: a light source 17; a chassis 14 having an opening 14b that allows light from the light source 17 to exit; an optical sheet 15 disposed over the opening 14b of the chassis 14 so as to enclose a space between the chassis 14, the optical sheet 15 configured to transmit the light from the light source 17; a sealing members 30, 31 securing the optical sheet 15 to the chassis 14 in a sealing manner; and an internal-pressure adjusters 35, 45 configured to adjust the internal pressure in the space enclosed by the chassis 14 and the optical sheet 15.

Abstract: A lighting device 20 including a plurality of planar light sources 21 arranged in a planar direction. Each planar light source 21 has a light exit surface 43 on which a brightness distribution is biased. Bias directions of brightness distributions of the planar light sources 21 are the same. The planar light sources 21 are arranged with some of the planar light sources 21 and the other planar light sources 21 in alternate orientations such that the bias directions are different. High brightness areas and low brightness areas on the light exit surfaces 43 are arranged in lines. With this configuration, the high brightness areas are not in line and thus a bright band does not appear. Therefore, high display quality can be achieved.

Abstract: A backlight (2) of the present invention is a tandem backlight. This backlight (2) includes: a light source (5); a plurality of light emitting units (11) each including a light guide body (7) that diffuses light from the light source and causes the diffused light to exit from a light emitting surface; and a substrate (4) on which the light source (5) is fixedly connected and which is connected to the light guide body (7). On a surface of the light guide body (7) which surface faces the substrate (4), a protrusion (12) for alignment with the substrate is formed. Meanwhile, in the substrate (4), a through hole (13) into which the protrusion (12) is engaged is formed. An engaging section B (alignment section) of the protrusion (12) and the through hole (13) is disposed so as to be closer to a light emitting section (7b) than the connecting area A of the light guide body (7) and the substrate (4).

Abstract: An optical member comprises a diffusion layer (13) diffusing emitted light from light sources (12), a first light collection layer (15), in which first projecting portions (15a) extending in a Y-direction are arranged at intervals (T1), refracting and collecting incident light from the diffusion layer (13), a first reflection layer (14) having first reflective portions (14a) facing boundaries between the adjacent first projecting portions (15a) and reflecting emitted light from the diffusion layer (13), a second light collection layer (17), in which second projecting portions (17a) extending in an X-direction are arranged at intervals (T2), refracting and collecting incident light from the first light collection layer (15), and a second reflection layer (16) having second reflective portions (16a) facing boundaries between the adjacent second projecting portions (17a) and reflecting emitted light from the first light collection layer (15).

Abstract: A nitride semiconductor light emitting device includes at least a substrate, an active layer formed of a nitride semiconductor containing mainly In and Ga, a p-electrode and an n-electrode. At least one of the p-electrode and n-electrode is electrically separated into at least two regions.

Abstract: A nitride semiconductor light emitting device includes at least a substrate, an active layer formed of a nitride semiconductor containing mainly In and Ga, a p-electrode and an n-electrode. At least one of the p-electrode and n-electrode is electrically separated into at least two regions.

Abstract: A gallium nitride group compound semiconductor photodetector includes a substrate and a multilayer structure provided on the substrate. The multilayer structure includes an n-type gallium nitride group compound semiconductor layer, a p-type gallium nitride group compound semiconductor layer, and a light detecting layer provided between the n-type gallium nitride group compound semiconductor layer and the p-type gallium nitride group compound semiconductor layer. The light detecting layer has a quantum well structure includes a quantum well layer of InxGa1−xN (0<x<1) and a barrier layer of InyGa1−y−zAlzN (0≦y<1, 0≦z≦1, y+z<1).