LIGHT DIFFUSION PLATE, DIRECT BACKLIGHT DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE

PROBLEM TO BE SOLVED: To provide a light diffusion plate capable of being molded using a relatively small-sized existing injection molding machine and contributing to thinning of a direct backlight device while suppressing luminance irregularities of a light emitting surface. SOLUTION: The light dif...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	UEKI KAZUNORI, SUZUKI TOSHIRO
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 light diffusion plate capable of being molded using a relatively small-sized existing injection molding machine and contributing to thinning of a direct backlight device while suppressing luminance irregularities of a light emitting surface. SOLUTION: The light diffusion plate 1 is made by injection molding and disposed so as to close the opening of a casing. The light diffusion plate is provided with a body part 10 of a fixed thickness, which is rectangular in the plane view, an outer peripheral part 20 on the outer peripheral side of the body part, and a connection part 30 for connecting the body part to the outer peripheral part. The body part is provided with an effective illumination area on the almost center position of the rectangle and an irregular structure 12 for which the maximum value of center line average roughness is 3 to 1,000 μm is formed in a range including the area. The outer peripheral part has a roughly fixed thickness thinner than the thickness of the body part and is supported by the casing. The connection part becomes thinner from the body part toward the outer peripheral part side. COPYRIGHT: (C)2010,JPO&INPIT