MANUFACTURING METHOD FOR LIGHT SCATTERING FILM

• Main Authors: HIROSE KIICHIRO, MAEKAWA YOSHIYUKI, HONMA HIDEAKI
• Format: Patent
• Language: English
• Published: 13.04.2006
• 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

PROBLEM TO BE SOLVED: To provide a manufacturing method which is effective in cost reduction by improving productivity in imposition to cutting, and reducing excessive parts to be disposed of which are generated as a result of the cutting, by proposing a suitable method for obtaining a product of large size whose seam is inconspicuous (seamless) when a light scattering film is continuously manufactured. SOLUTION: The manufacturing method for the light scattering film is characterized in that when a photopolymerizable composition layer is irradiated with a light beam through a master plate for prescribing a pattern determining the direction and range of light scatter by the light scattering film and consisting of heights of refractive indexes on a film surface, a film type master plate with high flexibility which has a pattern varying in light-beam transmissivity by areas is formed to correspond to the pattern consisting of the heights of refractive indexes is used as the master plate. COPYRIGHT: (C)2006,JPO&NCIPI