BACKLIGHT DEVICE AND LIQUID CRYSTAL DISPLAY APPARATUS

A backlight device includes: a reflection sheet having a reflection surface which is divided into a plurality of reflection regions by a plurality of partitions that are each a ridge-shaped projection; light sources disposed in the respective reflection regions; a luminance uniformizing plate that t...

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Bibliographische Detailangaben
Hauptverfasser:	KUMAMOTO, Yasuhiro, SASAKI, Hisanori, YAMANO, Yoshikazu
Format:	Patent
Sprache:	eng
Schlagworte:	DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	A backlight device includes: a reflection sheet having a reflection surface which is divided into a plurality of reflection regions by a plurality of partitions that are each a ridge-shaped projection; light sources disposed in the respective reflection regions; a luminance uniformizing plate that transmits light incident from a first surface opposed to the reflection surface, and emits the light from the second surface; and a diffusion plate that diffuses and emits the light emitted from the second surface. The luminance uniformizing plate includes a high light-transmittance region between a region opposed to each of the light sources and a region opposed to a vertex portion of a corresponding one of the plurality of partitions, the high light-transmittance region being higher in light-transmittance per unit area than the region opposed to the light source and the region opposed to the vertex portion.