Sharp Kabushiki Kaisha Corporation

Yasumori Kuromizu

Takahiro Yoshikawa

Masashi Yokota

Masaki Shimizu

Kaori Yamamoto

Hirokazu Mouri

Shuki Yamamoto

Syuki Yamamoto

A backlight device according to the present invention is provided with: a chassis having a bottom plateand a side plate; LED substratesdisposed on the bottom plateof the chassis in a manner so that one end surface of the LED substrates and the side plate face each other; LEDs disposed on the LED substrateswith the obverse side as the light exit side; a wiring patterndisposed on the LED substrates; a first connectorconnected to the wiring patternand disposed on the end on the side provided with the one end surface among the ends of the LED substrates; a second connecting member that is electrically connected to the first connectorwith the direction of connection being a direction that is along the plate surface of the bottom plate, forming in a plan view an angle with the first side edgethat faces the one end surface, and facing the first side edgefrom the reverse side from the first side edgesandwiching the first connector; and a power supply wiring linethat is electrically connected to the second connector

Lighting device, display device, and television reception device

To provide a display device capable of offering improved radiation performance of radiating heat generated from a driver IC arranged to drive a display panel. The display device () includes a display panel () arranged to display an image, a driver IC () electrically connected to the display panel via a connecting member () and arranged to drive the display panel, and a housing member that defines a case of the display device, wherein the housing member includes a first housing member () made from metal and attached to the display panel from a front side of the panel, and a second housing member () made from metal and attached to the display panel from a back side of the panel, and wherein the driver IC is held sandwiched between the first housing member and the second housing member.

Display device comprising first and second housing members having an impelling member arranged to impel a driver IC

Provided is an illuminating device capable of uniformalizing intensity distribution in a plane of light that is emitted to the outside even when a light source includes a non-emitting portion or a low reflective portion. The illuminating device includes a light source including a plurality of light-emitting elements, and a light guide member including an entrance face opposing the light source, from which light emitted from the light source enters the inside of the light guide member, wherein the light source includes a non-emitting portion where the light-emitting elements are not disposed, and wherein light projected from a portion of the light source, the portion being close to the non-emitting portion, onto the entrance face of the light guide member is higher in intensity than light projected from the other portion of the light source onto the entrance face of the light guide member.

Illuminating device, display device, and television receiving device

Provided is an illuminating device capable of preventing luminance unevenness from developing therein. An illuminating device () includes a plurality of light-emitting boards (), each of which includes a long wiring board (), a plurality of light-emitting elements () mounted on the wiring board and clearances () between the adjacent light-emitting boards, and a light guide plate having a rectangular shape and arranged to guide light that enters from its end faces () inward and emit the light from its front face (), wherein the plurality of light-emitting boards are aligned along each of the end faces of the light guide plate, the end faces being opposed to each other, while the clearances between the adjacent light-emitting boards on the opposed end faces do not face each other while sandwiching the light guide plate therebetween.

Illuminating device, liquid crystal display device and television receiving device

In order to improve brightness in a lighting device, a backlight unitincludes: LEDsas a light source; a light guide memberhaving end portions LE facing the LEDsand guiding light from the LEDsto a light output side; a pressing memberconfigured to press the light guide memberfrom the light output side; and a pair of reflection sheetsanddisposed so as to sandwich the end portions LE of the light guide memberthat face the LEDs. The pair of reflection sheetsandincludes the first reflection sheetsdisposed on the light output side with respect to the light guide member, and the second reflection sheetsdisposed on a side opposite to the light output side. The first reflection sheetsare fixed to the pressing member

Lighting device, display device and television receiver

A backlight device of the present invention includes: a chassis having a bottom plate; a plurality of LED substratesthat are rectangular and that are arranged such that one end face on the short side of the LED substratefaces the short side of the bottom plate; LEDs arranged on the LED substrates; first through holes that go through the LED substrates; second through holesthat are disposed nearer the end face of the LED substratethan the first through holes, that go through the LED substrates, and that are horizontally longer than the first through holesalong the long side direction of the LED substrates; plate-shaped through holes disposed in the bottom plate; and securing pins that have a size that enables the LED substratesto be secured in the plate surface direction thereof by the securing pins going through the first through holesand plate-shaped through holes, that secure the LED substratesin the short side direction thereof by going through the second through holesand plate-shaped through holes, and that are a size allowing the LED substratesto move in the long side direction thereof.

Illumination device, display device, television receiving device

Provided is an illuminating device capable of preventing a light guide plate from being shaved because of contact with a fixation member on a back face side of an end portion of the plate. The illuminating device includes alight guide plate (), a chassis () housing the plate and including a bottom plate (), and a light source holding member () fixed to the bottom plate by a fixation screw () and holding a light source () close to a light entrance face () of the light guide plate, and further includes a concave portionpreventing contact between a screw head () of the screw and the light guide plate and disposed on a back face of an end portion () of the light guide plate at a position where the head is to be disposed if the screw is disposed on a side of the back face.

Uneven brightness is less likely to be caused and good display quality is achieved. A lighting device includes a plurality of light emitting units each of which includes a base board and a plurality of light emitting components on the base board, a linear light source including the plurality of light emitting units that are arranged linearly, a light guide member having an end portion and provided such that the end portion faces the linear light source, a reflection sheet configured to reflect light from the linear light source, and a reflection cover provided close to the light guide member and corresponding to a gap that is generated between the light emitting units.

Lighting device, display device, and television device

An illumination deviceof the present invention is provided with: a housing memberthat has a bottom plate, a side wall, and a pair of protrusions; a light guide platehaving a pair of first end faces, a pair of second end facesthat extend in a direction intersecting the first end faces, and a pair of recessesat the respective first end faces, the light guide plate being disposed in the housing memberin a manner so that the rear surfacethereof faces the bottom plateand the recessesrespectively engage the protrusions; a light source unithaving light sourcesand being disposed in the housing memberin a manner so that the light sourcesface at least the second end surfacesof the light guide plate; and a framehaving a frame-shaped covering platecovering the outer edges W of the plate surfaceof the light guide plate, and a pressing partthat protrudes downwards from the covering platein a manner so as to selectively press the peripheral portion Sof the recessof the plate surfaceof the light guide plate

Illumination device, display device, and television reception device

Provided is an edge light type illuminating device, in which an adverse effect of noise and the amount of electric wires are decreased by reducing the length of power supply wires arranged to supply electric power to light sources. An illuminating device () includes a chassis plate () having a square shape in a plan view, edge light type light sources () disposed along at least one side face of the plate and another side face perpendicular to the one side face, power supply means () arranged to supply electric power to the light sources, and a power supply wire arranged to electrically connect the light sources and the means, wherein at least a portion of the power supply wire includes bridging wires () arranged to connect the light sources perpendicular to each other.

Liquid crystal display device, illuminating device, and television receiving device

The backlight device () of the present invention is provided with: an LED (); an LED substrate () on which the LED () is mounted; a reflective sheet () that reflects light from the LED (), has a lens insertion hole () into which the LED () is inserted, and is arranged so as to cover the mounting surface () of the LED () on the LED substrate (); a first light-reflecting layer () that is formed in at least the portion of the mounting surface () of the LED substrate () that is inside the lens insertion hole (), and that reflects light from the LED (); and a second light-reflecting layer () that is arranged in at least the portion of the mounting surface () of the LED substrate () that is inside the lens insertion hole (), has a light reflectance different from that of the first light-reflecting layer (), and is formed to have a shape partially covering the first light-reflecting layer ().

A backlight unitaccording to the present invention includes an LED, an LED board, a connector, a chassis-side reflection sheet, and a support. The LEDis a light source. The LEDis mounted on the LED board. The connectoris a mounted component mounted on a mounting surfaceof the LED boardon which the LEDis mounted. The chassis-side reflection sheetis a reflection sheetconfigured to reflect light and arranged on a side on which the mounting surfaceis arranged. The mounting surfaceis the surface on which the LEDand the connectorare mounted. The supportholds the chassis-side reflection sheetaway from the mounting surfaceof the LED board

An object of the present invention is to configure a lighting device to discriminate the front and back sides of a substrate at low costs. In the lighting device of the present invention, a diffuser plateas an optical memberincludes: a light-transmissive substrate; an optical patternformed on the substrateand applying an optical action to light; and a discrimination patternconfigured to discriminate between a first position (normal position) of the substrateand a second position (non-normal position) of the substratereversed from the first position, formed on a first planethat is a surface of the substrateon which the optical patternis formed, and made of the same material as that of the optical pattern

Optical member, lighting device, display device and television receiver, and method of manufacturing the optical member

A backlight unit which is a lighting device is provided with: a diffusion plate; a chassis having rising sections which are provided at the outer periphery of the main flat surface thereof and supporting the diffusion plate; light-emitting modules disposed at the main flat surface and the rising sections of the chassis and applying light to the diffusion plate; and reflecting sheets disposed at the main flat surface and the rising sections of the chassis and reflecting the light, which is emitted from the light-emitting modules, toward the diffusion plate. The reflecting sheets have formed thereon sloped sections for reflecting, toward the diffusion plate, the light emitted from the light-emitting modules disposed at the rising sections.

Lighting device, display device, and television receiver

Uneven brightness is less likely to occur in a backlight unit. In a backlight unit, suppose that a maximum value and a minimum value of light reflectance of at least a first surfaceof a diffuser platefacing a hot cathode tubeare defined as Rmax Rmin, respectively, a rising proximal position BP of each rising portionof a reflection sheetis provided to overlap with an area of the diffuser platehaving light reflectance R that satisfies the Expression given below, and a rising distal position EP of each rising portionis provided not to overlap with an area of the diffuser platehaving the light reflectance R that satisfies the Expression given below.(Rmax&#x2212;Rmin)/2+Rmin&#x3c;R

Growing community of inventors

Osaka, Japan

Yasumori Kuromizu