Abstract: In order to prevent unevenness in planar light and reduce power consumption, a backlight unit A that emits planar light towards a front side thereof has a light-shielding part 500 provided on a package 50 at least on a front side of the backlight unit. The package 50 has an LED module 5 that surrounds an LED chip 51 that is a light source, and the light-shielding part 500 protrudes towards a light receiving face 22 of a light guide plate 2.

Abstract: A technology for restricting or suppressing a lift of a reflection sheet in a direct backlight device is provided. The direct backlight device according to the present invention includes an LED board 30, LEDs 28, lenses 32, legs 31a, 31b and 31c, a reflection sheet 26. The LEDs 28 are arranged on a surface of the LED board 30. The lenses 32 cover the respective LEDs 28 from the light exit side and diffuse light from the LEDs 28. The legs 31a, 31b and 31c are arranged on the surface of the LED board 30 and support the lenses 32. The reflection sheet 26 has through holes 27. The LEDs 28 and the legs 31a, 31b and 31c are passed through the respective through holes 27 of the reflection sheet 26. The reflection sheet 26 includes projections 26a, 26b and 26c projecting inward from an edge of the corresponding through hole 27. The three projections 26a, 26b and 26c are held between the three legs 31a, 31b and 31c.

Abstract: Disclosed are a direct LED backlight device and a liquid crystal display device, which is provided with the backlight device. In the LED backlight device (BL1), cost is reduced by simplifying an assembly step with the reduced number of components that constitute the backlight device, and even with the reduced number of components, the service life of an LED package can be stabilized by dissipating heat. A wiring pattern (2) for driving an LED chip is provided on a heat dissipating board (4), and an LED package (1) is directly mounted on the heat dissipating board (4) by mounting, on the wiring pattern (2), each sub-mounting board having the LED chip mounted thereon.

Abstract: A technology to suppress or prevent an uplift of a reflection sheet included in a direct type lighting unit is provided. A direct type backlight unit according to the present invention includes an LED board 30, an LED 28 arranged on a surface of the LED board 30, a reflection sheet 26 arranged on the surface of the LED board 30. The reflection sheet 26 has a through hole 27 through which the LED 28 is passed. The reflection sheet 26 is arranged such that a part 26a of a periphery 27a of the through hole 27 is located between a light emitting surface 28a of the LED 28 and the LED board 30.

Abstract: A technology for restricting or suppressing a lift of a reflection sheet in a direct backlight device is provided. The direct backlight device according to the present invention includes an LED board 30, LEDs 28, lenses 32, legs 31a, 31b and 31c, a reflection sheet 26. The LEDs 28 are arranged on a surface of the LED board 30. The lenses 32 cover the respective LEDs 28 from the light exit side and diffuse light from the LEDs 28. The legs 31a, 31b and 31c are arranged on the surface of the LED board 30 and support the lenses 32. The reflection sheet 26 has through holes 27. The LEDs 28 and the legs 31a, 31b and 31c are passed through the respective through holes 27 of the reflection sheet 26. The reflection sheet 26 includes projections 26a, 26b and 26c projecting inward from an edge of the corresponding through hole 27. The three projections 26a, 26b and 26c are held between the three legs 31a, 31b and 31c.

Abstract: The color gamut of a liquid crystal display device of the field sequential system is sufficiently improved. A liquid crystal display device according to the present invention is a liquid crystal display device of the field sequential system including: an illumination element including a first light source for emitting light of a first color, a second light source for emitting light of a second color which is different from the first color, and a third light source for emitting light of a third color which is different from the first and second colors, the illumination element being capable of emitting light of the first, second, and third colors independently by time division; and a liquid crystal display panel for modulating the light emitted from the illumination element. The liquid crystal display panel of the liquid crystal display device according to the present invention includes a first color filter exhibiting a high transmittance for light of the first color.

Abstract: A display apparatus can perform a high quality moving picture display and provides improved color purity, and includes an illumination device that prevents and minimizes light unevenness in the form of a lamp image. The display apparatus includes an illumination device in which a first scattering layer, a first light-condensing layer, a second scattering layer, and a second light-condensing layer are arranged so as to cover a light-radiating surface of a light source unit including a first light source that emits light of a first color and a second light source that emits light of a second color complementary to the first color, a gate driver arranged to sequentially select each one of scanning lines at a cycle of 0.

Abstract: An illumination device for a display device has cold cathode tube lamps capable of being driven in parallel, a first holding member having holders equivalent in number to the number of the cold cathode tube lamps and each holding one end of each lamp, a second holding member having holders equivalent in number to the number of the cold cathode tube lamps and each holding the other end of each lamp and an electric power source device. Harness lines connected to one end of the electric power source device and the first holding member are interconnected at multiple points, and harness lines connected to the other end of the electric power source device and the second holding member are interconnected at multiple points. This reduces uneven brightness. The illumination device for a display device can be used as backlight for a liquid crystal TV.

Abstract: Disclosed is a lamp holding tool provided with lamp holding sections arranged in a same direction at fixed intervals, and flat-board like connecting sections whereupon the lamp holding sections are fixed. The lamp holding section has a shape which can abut to the lamp on different parts depending on relative angles to the lamp. As for the lamp holding sections, a distance between the lamps is changed by an angle formed by the arrangement direction of the lamp holding sections and the axis direction of the lamps.

Abstract: A light source device and a display device are disclosed of which high display quality can be maintained by correcting luminance or a color tone without making a user feel strangeness or inconvenience. A light source device is disclosed in at least one embodiment, including light source blocks each of which has red-color light-emitting diodes, green-color light-emitting diodes and blue-color light-emitting diodes and is capable of independently adjusting luminance of the three color diodes, a photo-receiving mechanism arranged to photo-receive light, and a correcting operation control mechanism arranged to calculate correction amounts of the luminance of the light sources in each of the blocks based on photo-receiving amounts of the photo-received light in order to maintain uniform luminance or a uniform color tone among the blocks, wherein the mechanism controls the mechanism to photo-receive the light when a termination operation of the light source device is performed.

Abstract: A diffusion plate (DL) allowing the light from a fluorescent tube (71) to transmit therethrough is held on a support surface (1S, 1S) forming one surface of a side holder (SF). In particular, a support frame (FM) which also plays the role of the side holder (SF) supports the diffusion plate (DL) of a shape of which the long dimension and short dimension parts can be defined, for example, a rectangular shape at only two short dimension parts on its outer edges opposed to each other.

Abstract: In a backlight unit including fluorescent tubes and a diffusion unit overlapped with each other, optical materials with different transmittances are contained in a holding layer positioned between a diffusion plate and a lenticular lens layers.

Abstract: An optical member 15 is constituted by sticking a lens sheet 28 capable of transmitting light irradiated toward a liquid crystal panel 11 and a diffuser sheet 27 together. The lens sheet 28 is provided with a lens portion 30 having a large number of unit lenses 29 aligned on the front surface, while on the rear surface, provided with a reflecting layer 32 having an opening 31 corresponding to the lens portion 30. The optical member 15 is received on the backside by receiving members 21 and 24 provided respectively in a holder 17 and a lamp holder 16, while being held from the front by a frame 18. A protrusion 33 is provided in the receiving member 24 in the holder 17, which supports the optical member 15 in a posture so that the edge 15a of the optical member 15 and the arrangement of the unit lenses 29 are inclined relatively to the arrangement of the pixel electrodes PE in the liquid crystal panel 11, by abutting an outer circumferential end surface 15b in the optical member 15.

Abstract: An optical member 15 is constituted by sticking a lens sheet 28 capable of transmitting light irradiated toward a liquid crystal panel 11 and a diffuser sheet 27 together. The lens sheet 28 is provided with a lens portion 30 having a large number of unit lenses 29 aligned on the front surface, while on the rear surface, provided with a reflecting layer 32 having an opening 31 corresponding to the lens portion 30. The optical member 15 is received on the backside by receiving members 21 and 24 provided respectively in a holder 17 and a lamp holder 16, while being held from the front by a frame 18. An inclined posture supporting member 33 is provided in the receiving member 24 in the holder 17, which supports the optical member 15 in a posture so that the edge 15a of the optical member 15 and the arrangement of the unit lenses 29 are inclined relatively to the arrangement of the pixel electrodes PE in the liquid crystal panel 11, by abutting an outer circumferential end surface 15b in the optical member 15.

Abstract: A backlight device is provided with a cold cathode fluorescent tube as a first light source that emits light of green, and a cold cathode fluorescent tube as a second light source that can be switched on independently from the first light source and emits light of red and blue. A diffusion member provided on the light source side of a diffusion plate is disposed opposite to the first light source so as to diffuse green light.

Abstract: In a lighting unit, fluorescent lights and LEDs of different spectroscopic characteristics are alternately arranged in a direction X on an irradiation plane. Light sources of equal light intensity are arranged in a certain pitch for the fluorescent lights such that a uniform light amount is achieved around end portions in the direction X. The LEDs include LEDs aligned on a bottom surface of a chassis and LEDs arranged on an inner sidewall surface of the chassis. As a result, a lighting unit having a uniform amount of light across an entire irradiation plane is achieved.

Abstract: An optical sheet laminate 40 arranged between a light source 24 and a display panel 11 for displaying an image by using light emitted from the light source, the optical sheet laminate 40 being constituted by laminating a diffuser plate 41 for diffusing light emitted from the light source 24 and an optical sheet 43 for transmitting light emitted from the diffuser plate 41, wherein the optical sheet 43 and the diffuser plate 41 are adhered by an adhesive layer 44 attached partially within an area provided so as to oppose to a display area of the display panel 11.

Abstract: In a lighting unit, fluorescent lights and LEDs having different spectroscopic characteristics are alternately arranged in a direction X on an irradiation plane. The fluorescent lights are arranged in certain intervals so as to provide uniform light intensity even around the end portions of the direction X. The LEDs installed at the ends of the direction X have a light intensity that is weaker than that of other LEDs in order to provide uniform light intensity around the end portions. As a result, the lighting unit provides uniform light intensity across the entire irradiation surface.

Abstract: Disclosed is a lamp holding tool provided with lamp holding sections arranged in a same direction at fixed intervals, and flat-board like connecting sections whereupon the lamp holding sections are fixed. The lamp holding section has a shape which can abut to the lamp on different parts depending on relative angles to the lamp. As for the lamp holding sections, a distance between the lamps is changed by an angle formed by the arrangement direction of the lamp holding sections and the axis direction of the lamps.

Abstract: A lamp holder is attached to an end of a narrow lamp to secure the lamp to an edge of a reflector for reflecting light from the lamp and has an abutment surface abutting a surface of the edge of the reflector and a sandwiching portion arranged to sandwich the edge of the reflector between the abutment surface and the sandwiching portion.