BACK LIGHT UNIT AND BACK LIGHT

PROBLEM TO BE SOLVED: To provide a back light unit for liquid crystal display device with which non-uniformity in light emission on a display screen can be prevent without lowering luminance. SOLUTION: This back light unit is constituted by overlapping a reflection plate 20, a light guiding plate, a...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
1. Verfasser:	NINOMIYA SHINPEI
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING BLASTING CRYPTOGRAPHY 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 DISPLAY DISPLAYING EDUCATION FREQUENCY-CHANGING FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING LABELS OR NAME-PLATES LIGHTING MECHANICAL ENGINEERING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SEALS SIGNS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF 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 back light unit for liquid crystal display device with which non-uniformity in light emission on a display screen can be prevent without lowering luminance. SOLUTION: This back light unit is constituted by overlapping a reflection plate 20, a light guiding plate, a first diffusion plate, first and second prism sheets an a second diffusion plate on a chassis 1 in this order and making them mutually tightly contact. An area A of the chassis 1 has a complicated form. On the surface of the reflection plate 20 opposed to the chassis 1, a gray rectangular light absorbing part 21 is provided in the area corresponding to the area A. The illumination light led into the light guiding plate is reflected from the surface of the reflection plate 20 and the light transmitted through the reflection plate 20 is absorbed by the light absorbing part 21.