Panasonic Liquid Crystal Display Co., Ltd.

Hitachi Displays, Ltd.

Japan Display Inc.

Hitachi Display Devices, Ltd.

Panasonic Liquid Display Co., Ltd.

Panasonic Liquid Crystal Co., Ltd.

Masashi Baba

Ikuko Imajo

Sachiko Yamazaki

Ryutaro Oke

Kikuo Ono

Isao Matsuda

Masahiro Tanaka

Masaki Tsubokura

Shinji Yasukawa

Ikuko Mori

Yuuichi Takenaka

Yasuhiko Yamagishi

Kazunori Ojima

Yuya Sato

Yoshikazu Nakada

Katsunori Kanno

A backlight includes light emitting diodes; a substrate on which light emitting diodes are mounted; and a reflection sheet. The surface on which the light emitting diodes are mounted of the substrate is opposed to a rear surface of the liquid crystal display panel. The liquid crystal display panel and the substrate each have a shape in which a common width in a first direction is longer than a width in a second direction, which is orthogonal to the first direction. The width of the substrate in the second direction is shorter than the width of the liquid crystal display panel in the second direction. The substrate is opposed to, while avoiding being opposed to both end portions of the liquid crystal display panel in the second direction, a central portion between the both end portions of the liquid crystal display panel.

Liquid crystal display device and television set

Provided is a liquid crystal display device (), including: a liquid crystal panel (); and a backlight unit (), which is disposed on a rear surface of the liquid crystal panel () and includes a light source substrate () onto which a plurality of light sources are mounted and a casing (), in which: the plurality of light sources are arranged along one direction, and at least one of the plurality of light sources is disposed so as to be offset in a direction orthogonal to the one direction with respect to at least another one of the plurality of light sources; and the backlight unit further includes a fixture () for fixing the light source substrate () onto the casing (), the fixture being disposed on a side of the offset light source in an opposite direction to an offset direction.

Liquid crystal display device

In a liquid crystal display device including a backlight unit that irradiates the entire image formation region with light from light emitting diodes disposed in a concentrated manner, in order to reduce warpage of a reflection sheet to obtain uniform illumination, provided is a liquid crystal display device (), including: a liquid crystal panel (); a reflection sheet (), which is disposed on a rear surface side of the liquid crystal panel () and is curved so as to have a concave surface facing the liquid crystal panel (); a light emitting diode substrate on which a plurality of light emitting diodes () are disposed along a horizontal direction; and a support () for fixing the reflection sheet () at a curved portion of the reflection sheet ().

In order to fix lenses of light emitting diodes stably without impairing heat dissipation performance in a liquid crystal display device, the liquid crystal display device includes: a liquid crystal panel; and a light emitting diode substrate (), which is disposed on a rear surface side of the liquid crystal panel and includes: a plurality of light emitting diode elements () disposed along a longitudinal direction; lenses () each including a plurality of legs (), the lenses being disposed on the liquid crystal panel side of the light emitting diode elements (); and electrodes () which are formed on a surface of the light emitting diode substrate () and are electrically connected to the light emitting diode elements (), and all the legs () for fixing the lenses () to the light emitting diode substrate () are disposed directly above the electrodes ().

A liquid crystal display device includes a liquid crystal display panel, and a backlight unit. The backlight unit includes a plurality of light emitting diodes each having an anode and a cathode, and first adjacently and disposed substrates. The plurality of light emitting diodes are mounted on the first substrate and the second substrate and arranged in a plurality of rows. A first light emitting diode mounted on the first substrate and a second light emitting diode mounted on the second substrate which are adjacent across a boundary between the first substrate and the second substrate are disposed so that respective anodes of the first and second light emitting diodes are opposed to each other and have a pitch equal to or smaller than a pitch of other light emitting diodes mounted on the first and second substrates.

Provided is a liquid crystal display device, including: a liquid crystal display panel; and a backlight unit, in which: the backlight unit includes: a plurality of light emitting diodes each having an anode and a cathode; a first substrate; and a second substrate, the plurality of light emitting diodes being mounted on the first substrate and the second substrate; the first substrate and the second substrate are disposed adjacent to each other; light emitting diodes which are adjacent across a boundary between the first substrate and the second substrate are disposed so that the respective anodes are opposed to each other and so as to have a pitch equal to or smaller than a pitch of other adjacent light emitting diodes.

Provided is a liquid crystal display device, including: a liquid crystal panel having a display region; and a backlight unit disposed below the liquid crystal panel, in which: the backlight unit includes: at least one mounting substrate on which light emitting diodes are mounted; a radiator plate; and a reflection member; the reflection member has a reflection surface which is formed to have a recess surface shape; the light emitting diodes on the at least one mounting substrate are disposed on a bottom portion of the reflection surface; the at least one mounting substrate is disposed at a position under the bottom portion; the radiator plate is disposed under the at least one mounting substrate; and the radiator plate has, in plan view, a larger area than the at least one mounting substrate and a smaller area than the display region.

A liquid crystal display device includes a liquid crystal display panel having first and second scanning lines, first and second video lines, a first scanning line driving circuit, a second scanning line driving circuit, at least one first video line driving circuit, at least one second video line driving circuit, a backlight having a number of light sources, and a light controlling circuit for controlling the turning on and off of the backlight. The first scanning lines are divided into M groups where M is an integer of 2 or more (M&#x2267;2), the second scanning lines are divided into N groups where N is an integer of 2 or more (N&#x2267;2), the region of the backlight which corresponds to the first scanning lines is divided into M regions, and the region which corresponds to the second scanning lines is divided into N regions.

Liquid crystal display device having a plurality of first and second scanning lines and a plurality of first and second video lines

In a liquid crystal display device including a liquid crystal display panel, and a backlight disposed on the rear surface of the liquid crystal display panel, the backlight is provided with a plurality of white light-emitting diodes arranged in a plane opposing the liquid crystal display panel. Based on a chromaticity coordinate value representing a color of emission identified for each of the white light-emitting diodes, the white light-emitting diodes are selectively combined for arrangement in proximity in such a manner that the color of emission as a result of averaging over the white light-emitting diodes () to be arranged in proximity takes a predetermined value of chromaticity coordinates. Accordingly, the resulting liquid crystal display device can offer, although using the white light-emitting diodes having the problem of impairing the uniformity of the color of emission, higher-quality display images using a backlight with less non-uniformity of color and light emission as a whole, and prevents the increase of the manufacturing cost.

Provided is a liquid crystal display device including a frame for accommodating light emitting diode substrates, the frame including: a first surface opposed to the light emitting diode substrates; a second surface that erects from the first surface around the light emitting diode substrates; and a third surface on an opposite side to the first surface; a connector attached to each of the light emitting diode substrates; a circuit board disposed on the third surface of the frame; and at least one cable for electrically connecting the connector with the circuit board. The at least one cable extends from the connector in a direction approaching the circuit board on the first surface so as to detour around the light emitting diode substrates, passes through the frame from the first surface to the third surface, and is electrically connected to the circuit board on the third surface.

The present invention provides a liquid crystal display device which can reduce the number of cables so as to prevent the occurrence of the brightness irregularities. The liquid crystal display device includes a liquid crystal display panel and a backlight. The backlight includes an LED substrate on which a plurality of LEDs are mounted, a reflection sheet which is arranged on the LED substrate, a diffusion plate which is arranged in a spaced-apart manner from the LED substrate, side supports which support the diffusion plate at end portions of the LED substrate, connectors which are provided for electrical connection with an external device, and electronic parts which are electrically connected with at least one of these LEDs. The connectors and the electronic parts are mounted on the LED substrate below the side supports. The side supports exhibit higher light reflectance than the connectors and the electronic parts.

A liquid crystal display device includes a liquid crystal display panel and a backlight. The backlight includes: a light emitting diode substrate on which light emitting diodes are mounted; a reflection sheet that is provided on the light emitting diode substrate and has holes formed therein, each of the light emitting diodes being provided inside each of the holes; and lenses provided on the light emitting diodes, for diffusing light from the light emitting diodes. Each of the lenses is larger than the each of the holes, and entirely covers the each of the holes and also covers a part of the reflection sheet including an entire periphery of the each of the holes.

Reflective sheet for LCD backlights

A liquid crystal display comprising the feature that a backlight comprises a cold cathode ray tube disposed on a surface facing a liquid crystal display panel and a chassis for supporting the cold cathode ray tube, and the cold cathode ray tube is set so that a distance from the chassis at an end to which a high voltage is applied becomes larger than a distance from the chassis at an end to which a low voltage is applied.

Growing community of inventors

Chiba, Japan

Masashi Baba