Sharp Kabushiki Kaisha Corporation

Akira Gotou

Masanobu Harada

Keitaro Matsui

Makoto Uno

A display device includes a diffuser plate, a plurality of light sources that irradiates the diffuser plate with light, a mounting substrate on which the plurality of light sources is mounted, a chassis to which the mounting substrate is secured, and a support member that is disposed between the chassis and the diffuser plate and that supports the diffuser plate. The support member includes a securing pin that is fitted in a hole that is formed in the mounting substrate, a support pin that is located between the diffuser plate and the chassis, and a coupling portion that extends in a plane direction of the mounting substrate and that couples the securing pin and the support pin with each other.

Display device comprising a chassis having a groove portion recessed in a direction opposite to a diffuser plate

A backlight unit includes LEDs a light guide plate, and a wavelength converter. The light guide plate includes a light entering end surface and a light exiting plate surface. The light entering end surface is at least a section of an outer peripheral end surface of the light guide plate. The light exiting plate surface is a plate surface of the light guide plate. The wavelength converter is interposed among the LEDs and the light entering end surface to extend along the length direction of the light entering end surface. The wavelength converter includes phosphors configured to wavelength-convert light. The wavelength converter is configured such that at least any one of end portions in the length direction is formed as a great light emission portion configured to emit a greater amount of wavelength-converted light per unit length in the length direction than that of a center portion.

Lighting device, display device, television device, and method for manufacturing wavelength converter

A backlight device (a lighting device)includes LEDs (a light source), a light guide platehaving a light entering end surfacethat is a part of peripheral edge surfaces and through which light from the LEDsenters and a light exiting plate surfacethat is one of a pair of plate surfaces and through which light exits, a wavelength conversion sheet (a wavelength conversion member)overlapping the light exiting plate surfaceof the light guide plateand containing phosphors that convert the light from the LEDsto light with other wavelengths, and a color exhibit memberdisposed on at least a part of a peripheral portion of the wavelength conversion sheetand exhibiting a color same as or similar to a color of the light converted with wavelength conversion by the phosphors contained in the wavelength conversion sheet

Lighting device, display device, and television device that reduce unevenness in displayed color

A lighting device includes a light source array, a wavelength converting member, and a light guide plate. The light source array includes light sources configured to emit primary light rays. The wavelength converting member includes a wavelength converting portion, a holding portion, and non-wavelength converting portions. The wavelength converting portion contains phosphors configured to emit secondary light rays when excited by the primary light rays. The wavelength converting member is disposed between the light guide plate and the light source array. The light guide plate includes a light entering surface, a light exiting surface, an opposite surface that is on an opposite side from the light exiting surface, and a light reflecting and scattering pattern. The light reflecting and scattering pattern includes complementary color dots formed in sections of the opposite surface on non-wavelength converting portion sides. The complementary color dots absorb the primary light rays.

Lighting device, display device, and television device

A backlight unitincludes LEDs, a light guide plateincluding a light entry end surface, a light output plate surface, and an opposite plate surface, a wavelength conversion sheet, and a reflection sheet. The light guide plateincludes a parallel plate surfaceon a central portion of the opposite plate surfaceand parallel with the light output plate surface, and an inclined plate surfaceon a part of the outer peripheral side portion and being inclined with respect to the light output plate surfaceto be closer to the light output plate surfaceas is closer to the outer peripheral end surface. The wavelength conversion sheetoverlaps the light output plate surfaceand contains a phosphor that wavelength-converts the light from the LEDs. The reflection sheetoverlaps the opposite plate surfaceand reflects light, and includes a parallel reflection portionalong the parallel plate surface, and an inclined reflection portionalong the inclined plate surface

A backlight device includes LEDs, a light guide plate, and a heat dissipation member. The light guide plate includes edge surfaces including a light entrance surface through which light from the LEDs enters, a front plate surface as a light exit surface through which the light from the LEDs exits, and another plate surface as an opposed surface on an opposite side from the light exit surface. The heat dissipation member having heat dissipating properties includes a bottom plate portion extending along the opposed surface on an opposed surface side, and an upstanding portion extending from the bottom plate portion toward the light exit surface. The bottom plate portion includes projections projecting toward the light exit surface and facing short-side edge surfaces of the light guide plate. The projections are stopped at the corresponding edge surfaces to restrict a distance between the LEDs and the light entrance surface.

A liquid crystal display device includes LEDs, a liquid crystal panel, a chassis, a frame, positioning ribs, and step portions. The liquid crystal panelis configured to display using light from the LEDs. The chassis is arranged on an opposite side of the liquid crystal panelfrom a display surface that is for display. The frameis arranged on the display surface side of the liquid crystal panel. The frameholds at least the liquid crystal paneland the LEDs with the chassis such that the liquid crystal paneland the LEDs are sandwiched between the frameand the chassis. The positioning ribhaving a block-like shape projects from the frametoward the chassis and includes a peripheral surface opposite a peripheral surface of the liquid crystal panelfor positioning the liquid crystal panelrelative to the display surface direction. The step portionprojects from a portion of a distal end surface of the positioning ribtoward the chassis so as to form a step. The step portionincludes a peripheral surface (the inner surface) opposite the peripheral surface of the liquid crystal panel. The peripheral surface of the step portionis on the same plane with the peripheral surface of the positioning rib(the inner surface) which is opposite the peripheral surface of the liquid crystal panel

Display device and television device

In a lighting unit, a first light source unit includes light sources and a first board having a first mount portion and a first empty portion, a second light source unit includes light sources and a second board having a second mount portion and a second empty portion. The first light entrance portion is on one edge portion thereof and the first fixing portion is adjacent to the first light entrance portion and on the one edge portion and fixes the first light source unit in close contact with the first empty portion. The second light entrance portion is on another edge portion and overlapped with the first fixing portion. The second fixing portion is adjacent to the second light entrance portion and overlapped with the first light entrance portion. The second fixing portion is in close contact with the second empty portion to fix the second light source unit.

Lighting device, display device and television device

A liquid crystal display deviceincludes LEDs, a liquid crystal panel, a chassis, a frame, positioning ribs, opposed portions, and gel members. The liquid crystal panelis configured to display using light from the LEDs. The chassisis arranged on an opposite side of the liquid crystal panelfrom a display surfacethat is for display. The frameis arranged on the display surfaceside of the liquid crystal panel. The frameholds at least the liquid crystal paneland the LEDswith the chassissuch that the liquid crystal paneland the LEDsare sandwiched between the frameand the chassis. The positioning ribsproject from the frametoward the chassis. The positioning ribsinclude a peripheral surface opposite a peripheral surfaced of the liquid crystal panelfor positioning the liquid crystal panel. The opposed portionsare arranged at portions opposite the positioning ribsof the liquid crystal panel. The gel membershave elastic properties and are arranged in gaps between the positioning ribsand the respective opposed portions

Display device comprising a first positioning portion opposite to a second positioning portion and television device having the same

In order to accurately illuminate a lighting target with planar light having few nonuniformities, a backlight () is provided with a light guide plate () having multiple leg members () protruding from an attachment part (), which is the surface opposite of an emission part (), and a chassis () having holding units () into which the leg members () are inserted.

Edge light backlight unit and liquid crystal display device including same

Disclosed is a backlight unit in order to suppress an increase of time needed for manufacture and generation of operation variance, and furthermore, to suppress deterioration and unevenness of luminance of output light. A plurality of transparent light guide plates (), which are disposed in a chassis () in the lateral direction, and which output light emitted from a light source (), are provided with a fixing protruding section () which is to be pressed by a fixing member (), and an outputting section (), which outputs planar light. The outputting section () is provided with, when viewed from the front, an extending section () which extends to cover at least a part of the fixing protruding section ().

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Osaka, Japan

Akira Gotou