Light diffusing film and liquid crystal backlight unit using the same

• Main Authors: TAKAHASHI, KOZO, YAMAMOTO, MIZUKI, TAKAHASHI, HIROMITSU
• Format: Patent
• Language: Chinese; English
• Published: 16.01.2009
• Subjects: 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 ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The present invention is related to a light diffusing film which is characterized in that a light diffusing layer is formed on at least one face of an internal light-diffusing film comprising a matrix resin interior with a diffusing component of organic particle, and the said light diffusing layer comprises at least a binder resin and particles. According to the invention, a light diffusing film is provided which, while used for the backlight for liquid crystal displays, is outstanding in its satisfactorily eliminates the unevenness of brightness and inhibits the viewing-angle dependence of brightness.