BACKLIGHT UNIT

PROBLEM TO BE SOLVED: To provide a backlight unit capable of acquiring sufficient luminance even without using a prism sheet. SOLUTION: The backlight unit is provided with a diffusion light guide plate 4 having a light incidence surface 12 and a light emitting surface 14 opposed to the light inciden...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
1. Verfasser:	FUJIKI YASUTAKE
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING 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 FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED LIGHTING MECHANICAL ENGINEERING NON-LINEAR OPTICS NON-PORTABLE LIGHTING DEVICES OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR SYSTEMS THEREOF TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a backlight unit capable of acquiring sufficient luminance even without using a prism sheet. SOLUTION: The backlight unit is provided with a diffusion light guide plate 4 having a light incidence surface 12 and a light emitting surface 14 opposed to the light incidence surface 12, a reflecting member 8 disposed oppositely to the light incidence surface 12 of the diffusion light guide plate 4, a primary light source 6 disposed between the diffusion light guide plate 4 and the reflecting member 8, a light diffusion sheet 10 disposed oppositely to the light emitting surface 14 of the diffusion light guide plate 4. This light emitting surface 14 has a plurality of protrusions 20 (or recesses) continuously disposed in a predetermined direction and a direction perpendicular to the predetermined direction. Each of the protrusions (or recesses) is formed into a quadrangular pyramid having a rectangular section. The quadrangular pyramid has a bottom side of 80-150 μm and has a face angle of 90-120 degrees. COPYRIGHT: (C)2009,JPO&INPIT