Sharp Kabushiki Kaisha Corporation

Tsuyoshi Ozeki

Kazuya Kondoh

Mamoru Ohashi

Motomitsu Itoh

Reduction of luminance is suppressed while effectively suppressing temperature rising of an LED of a backlight and a peripheral circuit. A backlight driving control unit () of a control device () included in a liquid crystal display device () according to an aspect of the invention increases and reduces, on the basis of two thresholds, power supplied to a backlight, and makes a time during which the power supplied to the backlight () is reduced longer than a time during which the power supplied to the backlight () is increased.

Control device and liquid crystal display device provided with control device

A display apparatus with a panel supporting portion includes a supporting body that has a plate shape and supports an end edge portion of an optical sheet. The supporting body includes a panel supporting portion in an outside end edge portion. The panel supporting portion supports an end edge portion of the display panel, and has a rib on an inside end edge portion and a fitting portion that fits one position regulating portion of an optical sheet. The rib has a cut-out portion in which a portion of the rib that corresponds to an end of the fitting portion is cut out so that a height is gradually lowered toward the fitting portion. Load application to the display panel on both end portions of the fitting portion is suppressed by the cut-out portion.

Display apparatus with panel supporting portion and television receiver

Provided is a backlight device that includes: LEDs; a LED substrate; a light guide plate having a light-exiting surface, an opposite surface on an opposite side of the light-exiting surface, and a light-receiving face; a chassis; a frame; a heat dissipating member having a bottom part and a raised part; a pair of fixing members, each having a gripping part that extends along a long-side direction of the raised part and that grips each end in the long-side direction of the raised part in a direction perpendicular to a plate surface of the raised part, and a locking part that extends along the long-side direction of the raised part and that is locked to each of side faces adjacent to the light-receiving face of the light guide plate on a side of the light-receiving face. The pair of fixing members keeps a distance between the LED substrate and the light guide plate constant by fixing a distance between the gripping part and the locking part.

Illumination device, display device and TV receiver

A liquid crystal display deviceincludes an LED unit, a liquid crystal panel, a light guide plate, a chassis, and a frame. The LED unitincludes an LEDand an LED board. The light guide platearranged such that a light entrance surfacefaces the LED. The frameis fixed to the chassis. The frameand the chassishold the liquid crystal paneland the light guide platetherebetween. The frameincludes a panel holding portionand a sidewall portion. The panel holding portionholds the liquid crystal panelfrom the display surfaceside. The sidewall portioncontinues from the panel holding portionand extends on the light entrance surfaceside. The frameincludes a through holethat runs through the sidewall portion. The LED unitis fitted in the through holefrom the outer side such that the LEDis positioned more to the inner side than the sidewall portionand at least a portion of the LED unitis held inside the through hole

Display device and television device

A display deviceaccording to this invention includes a display panel, a drive board, a flexible wiring, and a frame. The display panelis configured to display an image on a front side. The drive boardis configured to control display driving of the display panel. The flexible wiringhaving flexibility connects the display paneland the drive boardelectrically. The frameincludes a frame portion, a sidewall, and a housing portion. The frame portionhas a frame-like shape that is opposite a peripheral area of the front side of the display panel 11. The sidewallextends from the frame portiontoward a rear side of the display panel 11 and surrounds the display panel. The housing portionis located inside the sidewalland includes the groovethat opens to the frame portion. The housing portionholds the drive board 113 fitted in the groove

Display device with a frame holding a drive board and television device having the display device

A backlight device is provided with the following: LEDs; a light guide plate formed in a rectangular plate shape and having at the end surfaces thereof a light-receiving face opposing the LEDs and a reflection surface disposed on the side opposite the light-receiving face, and having on the plate surface thereof a light-emitting surface that emits light; a portion to be supported provided to the corner part, from among the corner parts of the light guide plate, that is disposed on the opposite surface side; a supporting portion that supports the light guide plate in a first direction and a second direction by coming into contact with the portion to be supported, when the first direction is a direction in which the LEDs and the light guide plate are lined up, and the second direction is a direction that is orthogonal to the first direction and that follows along the light-emitting surface of the light guide plate; and a inclined portion that is provided to the portion to be supported and that forms a slanted shape with respect to both the first direction and the second direction, and by facing outward in the second direction is distanced from the LEDs in the first direction.

Illumination device, display device, and television reception device

A liquid crystal display device includes an LED, a liquid crystal panel, a light guide plate, a chassis, a frame, a board attachment member, an LED board, and a holding member. The chassis is arranged on an opposite side of the light guide plate from the liquid crystal panel. The frame is arranged on a display surface side of the liquid crystal panel and in contact with the chassis. The frame and the chassis hold the liquid crystal panel, the LED, and the light guide plate therebetween. The board attachment member is mounted on the chassis and spaced apart from the frame. The LED board is in contact with the board attachment member and includes the LED mounted on a plate surface thereof. The holding member sandwiches the board attachment member and the LED board so as to hold the LED board to the board attachment member.

Display device and television device having holding member

A liquid crystal display deviceof the present invention includes: LEDs; LED substratesto which the LEDsare attached; a liquid crystal panelwhere display is performed using light from the LEDs; a light guide platethat is arranged so as to overlap the side of the liquid crystal panelopposite to the display surface, the edge faces of the light guide plate facing the LEDs; a chassisarranged on the side of the light guide plateopposite to the liquid crystal panel; a framearranged on the display surface side of the liquid crystal paneland housing the LEDs, LED substrates, liquid crystal panel, and light guide platebetween the chassisand the frame itself; and heat dissipating memberswith heat dissipating characteristics that are respectively arranged abutting the LED substratesand that are held between the frameand the chassis

Display device and television receiver device

This backlight deviceof the present invention includes: a cold cathode fluorescent tube; a chassisthat houses at least the cold cathode fluorescent tube on a front surfaceside of a bottom plateof the chassis; and a circuit substratehaving a front surfaceon which electronic componentsandare disposed, the front surfacefacing a rear surfaceof the bottom plateof the chassis. The heat generated from the electronic componentsandcirculates towards the chassiswith ease, and therefore the heat generated from the electronic componentsandon the circuit substratecan be effectively dissipated by the bottom plateof the chassis

Growing community of inventors

Osaka, Japan

Tsuyoshi Ozeki