Abstract: In a display device, the chromaticity of display images is properly corrected while the brightness is maintained at a high level. A liquid crystal display device 10 according to the present invention includes a liquid crystal panel 11 and a backlight unit 12. The liquid crystal panel 11 includes a pair of substrates 11a and 11b and a liquid crystal layer 11c containing substances having optical characteristics that varies according to an application of electric field. The backlight unit 12 is a lighting unit configured to illuminate the liquid crystal panel 11. On a CF substrate 11a of the pair of substrates 11a and 11b, color filters 19 including R, G, B, Y color portions in red, green, blue and yellow, respectively, are formed. The backlight unit 12 includes LEDs 24 as light sources.

Abstract: A lighting device configured to suppress the formation of a dark spot on a light incidence surface of a light guide plate is provided. A lighting device according to the invention includes a light source 17, a light guide plate 19, and an optical path altering member 34. The light guide plate 19 has a light incidence surface 19b on a side face thereof. The optical path altering member 34 is arranged so as to cover a light emission surface 17a of the light source 17. The light source 17 is disposed so as to face the light incidence surface 19b of the light guide plate 19 with the optical path altering member 34 therebetween. The optical path altering member 34 reflects or refracts the light from the light source 17, and therefore the light exits in a direction toward a part 19b2 of the light incidence surface 19b that does not directly face the light source 17.

Abstract: In a display device, sufficient color reproducibility is maintained while the brightness is maintained at a high level. The liquid crystal display device 10 according to the present invention includes a liquid crystal panel 11 and a backlight unit 12. The panel 11 includes substrates 11a, 11b, a liquid crystal layer 11c arranged between the substrates, and color filters 19 formed on the CF substrate 11a. The color filters include R, G, B, and Y color portions in red, green, blue and yellow, respectively. The backlight unit 12 includes cold cathode tubes 25 to illuminate the display panel 11. The color filters 19 are configured such that a chromaticity of blue in transmitted light passed through the color portions is outside a common gamut 35 on at least one of CIE 1931 and CIE 1976 color space chromaticity diagrams. The common gamut 35 is a region shared by NTSC color gamut 33 corresponding to NTSC standard and EBU color gamut 34 corresponding to EBU standard.

Abstract: Discharge tubes, each of which includes a glass tube and a ferrule that has a substantially cylindrical shape and is fitted to each end portion of the glass tube, are supported by a plurality of pairs of relay connectors (or supporting members) provided on the front side of a chassis having substantially a plate-shaped configuration. When a discharge tube is supported by relay connectors, stoppers provided on the relay connectors lock the ferrules so that axial movement of the discharge tube relative to the relay connectors is restricted.

Abstract: Scan lighting by an edge-light-type backlight device is applicable in a large-screen display device. A display panel 11 in a display device 10 includes data lines SL arranged in a long-side direction of the panel and configured to supply display data to display pixels and scan lines GL arranged in a short-side direction of the panel and configured to be scanned in the long-side direction thereof. A backlight device 12 in the display device 10 includes light sources 24 arranged in the long-side direction of the panel near an edge of one of the long sides of the panel and configured to be turned on through scan lighting in the long-side direction of the panel according to scanning of the scan lines SL, and a light guide member 26 provided behind the panel and configured to direct light from the light sources 24 in the short-side direction of the panel.

Abstract: An object of the present invention is to provide a lighting device that can suppress uneven brightness. Another object of the present invention is to provide a display device and a television receiver each including the lighting device. The lighting device according to the present invention includes an LED 22 having a light emitting surface 22A, a light guide plate 50 having a light entrance surface 50D and a light exit surface 50A, and an optical member 40 arranged to cover the light exit surface 50A. Light emitted from the light emitting surface 22A enters the light entrance surface 50D facing the light emitting surface 22A. The light in the light guide plate 50 exits through the light exit surface 50A. The optical member 40 is arranged such that a light-source-side side surface 41A to 43A of the optical member 40 is located farther from the light guide plate 50 than the light emitting surface 22A of the LED 22.

Abstract: To improve a workability in assembling and disassembling of parts of a lighting device. A backlight unit 12 includes an LED board 18 having LEDs 17, a chassis 14, a light guide member 19 having an end portion arranged to face the LEDs 17, a power supply board 21 arranged outside the chassis 14 and supplying drive power to the LEDs 17, and a connector 20 mounted to the chassis 14 and supplying power between the power supply board 21 and the LEDs 17. The connector 20 includes an LED board supporting portion 20a that supports the LED board 18, a power supply board supporting portion 20b having a plate surface along which the power supply board 21 is inserted into and removed from and that supports the inserted power supply board 21, and a connection terminal 28 that comes in contact with the power supply board 21 with allowing relative slide in an inserting and removing direction of the power supply board 21.

Abstract: An object is to improve a reliability of an electrical connection in a lighting device. A backlight unit 12 in accordance with the present invention is provided with an LED board 18 which has an LED 17 serving as a light source and is formed in an elongated shape, a chassis 14 in which the LED board 18 is accommodated, a light guide member 19 in which an end portion is arranged opposite to the LED 17 of the LED board 18, and a connector 20 mounted to the chassis 14 and configured to establish electrical connection with an external device, the LED board 18 is provided with a terminal 18b which is electrically connected to the LED 17, and the connector 20 includes a connection terminal 28 being in contact with the terminal 18b of the LED board 18 and slidable along a long-side direction of the LED board 18 and relative to the terminal 18 of the LED board 18.

Abstract: A backlight unit 24 of the present invention includes an LED light source 28, a light guide plate 20 and a lens member 26. The light guide plate 20 is configured to guide light that enters a light entrance surface 20a from the LED light source 28. The light entrance surface 20a has an elongated shape on the side surface thereof. The lens member 26 covers a light exit side of the LED light source 28 and is configured to diffuse light from the LED light source 28. The lens member 26 faces the light entrance surface 20a of the light guide plate 20 and is curved in the long-side direction of the light entrance surface 20a such that the lens member 26 bulges out toward the light guide plate 20 in a convex manner. The lens member 26 spreads light emitted from the LED light source 28 in the long-side direction of the light entrance surface 20a. This reduces a dark portion formed in the light entrance surface of the light guide plate 20.

Abstract: A cold cathode tube 15 includes an elongated glass tube 18, which has a primary-seal-side end portion 31 as one end portion thereof and a secondary-seal-side end portion 33 as the other end portion thereof. An electrode 19 is enclosed in each end portion 31, 33 of the glass tube 18. A ferrule 20 is attached to the outer side of each end portion 31, 33, and is connected to the corresponding electrode 19. The ferrule 20A-1 attached to the primary-seal-side end portion 31 and the ferrule 20B-1 attached to the secondary-seal-side end portion 33 differ in color of the entire surface from each other. A plurality of cold cathode tubes are arranged and mounted in a chassis 12, so that adjacent cold cathode tubes 15 lie in the opposite orientation to each other.

Abstract: Provided are a liquid crystal display device and television receiving apparatus having further improved use efficiency of light emitted from a light source while suppressing increase in costs. A liquid crystal display device 1 of the invention includes a liquid crystal display panel (40), two polarizing layers (first polarizing layer (50), second polarizing layer (52)) disposed so that the two polarizing layers sandwich the liquid crystal display panel, and a backlight device (10) (light source). Between the backlight device (10) and the first polarizing layer (50) (rear polarizing layer) that is one of the two polarizing layers disposed closer to the backlight device (10), an optical sheet assembly (20) is provided, which optical sheet assembly includes a lens sheet (22) for converging light emitted from the backlight. Furthermore, the first polarizing layer (50) and the optical sheet assembly (20) sandwich a ?/2 sheet (30) (?/2 layer).

Abstract: An optical member 15 of the present invention includes a lens sheet 28, a light diffusing sheet 27 and light reflecting members 24. The lens sheet 28 has a plurality of convex lenses 29 on an inner surface thereof. The light diffusing sheet 27 is disposed so as to face the lens sheet 28 and diffuses light. The light reflecting members 24 are selectively arranged in boundary areas of the plurality of convex lenses 29 between the lens sheet 28 and the light diffusing sheet 27. The lens sheet 28 has a surface having a light guiding direction and a non-light-guiding direction that crosses the light guiding direction because the convex lenses 29 have anisotropy for collecting light. The light diffusing sheet 27 has diffuseness larger in the light guiding direction of the lens sheet 28 than in the non-light-guiding direction of the lens sheet 28.

Abstract: Discharge tubes, each of which includes a glass tube and a ferrule that has a substantially cylindrical shape and is fitted to each end portion of the glass tube, are supported by a plurality of pairs of relay connectors (or supporting members) provided on the front side of a chassis having substantially a plate-shaped configuration. When a discharge tube is supported by relay connectors, stoppers provided on the relay connectors lock the ferrules so that axial movement of the discharge tube relative to the relay connectors is restricted.

Abstract: A lamp holding apparatus includes a mounting plate having a pair of locking portions protruding to a base side. The locking portion is inserted into a mounting hole provided at the base and capable of being locked to a peripheral edge on its back side. Abutting portions, which protrude to the base side and abut the base at the time of mounting, are provided on a bottom surface of the mounting plate that is an opposing surface to the base. The abutting portions are provided at three spots with one of the locking portions interposed therebetween. At the time of mounting, the abutting portions abut the base, and the mounting plate is elastically deformed to be warped, whereby the locking surface of the locking portion is kept locked to a peripheral edge of a back side of the mounting hole by its elastic force.

Abstract: In a discharge tube, a conductive ferrule is provided on an end portion of a glass tube. The ferrule includes a body that is to be mounted to the outer circumference of the glass tube and has a contact portion to be electrically conductively fixed to a relay connector (or a bearing device). Further included is a conductive portion that extends from the body so as to have elastic contact with an outer lead. The outer lead will not be under load due to the weight of the discharge tube, but the conductive portion solely has elastic contact therewith. Thus, stress concentration on the outer lead can be prevented.

Abstract: A lighting device includes a light source lamp, and a light-diffusing layer including a diffusing plate or a diffusing sheet, the light source lamp including a folded portion (curved portion), such as U-shaped tube, and the lighting device for display devices having any of, or a combination of: the folded portion of the light source lamp is covered with a lamp frame; an optical member provided with a light-reducing or light-shielding treatment is around the folded portion of the light source lamp; the folded portion of the light source lamp is outside an effective display region; the folded portion of the light source lamp includes a member reducing or shielding light; and a reflective member with a light-reducing treatment around the folded portion of the light source lamp. As a result, at least part of light generated from the curved portion of the light source lamp is reduced or shielded.

Abstract: The present invention has an object to reduce the manufacturing cost of a power supply substrate connected to a discharge tube in an illuminating device by reducing the size of the power supply substrate. The illuminating device 2 according to the present invention includes a chassis 4, discharge tubes 20 which have electrodes 17 at respective end portions of glass tubes 18 and in which the glass tubes 18 are bent such that these electrodes 17 are disposed in one direction, and a power supply substrate which supplies power to the discharge tubes 20. Two discharge tubes 20 are disposed inside the chassis 4. The discharge tubes 20 are housed side by side inside the chassis 4 such that the respective electrodes of the two discharge tubes 20 are lined up in one direction when the chassis 4 is seen in a plan view.

Abstract: A chassis assembly comprises a chassis 14 and lamp clips 18. The chassis 14 has mounting holes 33 to 35. Each lamp clip 18 includes a main body 27 to be mounted to the chassis 14, a lamp gripping portions 28 provided on the main body 27 so as to grip cold cathode tubes 17, and mounting portions 30 to 32 protruding from the main body 27 toward the chassis 14 side. The mounting portions 30 to 32 are to be inserted in the respective mounting holes 33 to 25. Rims of the mounting holes 33 to 35 are sandwiched between the main body 27 and the respective mounting portions 30 to 32. Three mounting portions 30 to 32 and three mounting holes 33 to 35 are provided in relative positions so as to restrict mounting of the lamp clip 18 to the chassis 14 in an orientation other than a predefined orientation.

Abstract: A lighting device for a display device includes a plurality of light sources, a power source arranged to provide drive power for the light sources, a common electrode arranged to supply the drive power to the plurality of light sources, a plurality of holder electrodes arranged to hold the respective light sources and supply the drive power from the common electrode individually to the respective light sources, and a dielectric portion provided between the common electrode and each of the holder electrodes.

Abstract: This cold cathode tube lamp comprises a glass tube (11) into which at least a rare gas is filled and a discharge tube composed of a pair of an electrode (21) and an electrode (22) disposed facing each other at both ends inside the glass tube (11). In the respective electrode (21) and electrode (22), lead terminals (31a, 31b, 31c) and lead terminals (32a, 32b, 32c), one end of each of which is connected to the electrode and the other end of each of which is led out to the outside of the glass tube (11) are provided.