Atsushi Nagasawa

P‐175L: Late‐News Poster: An Ultra Slim Backlight System using Optical‐Patterned Film

We have developed an ultra slim backlight system using optical-patterned film (OPF backlight), which has a lot of advantages to be composed of a single component and less than 0.4 mm in total thickness. Moreover, we have obtained the possibility to manufacture the sheet of OPF backlights by roll-to-roll continuous process.

P-69: Development of Light-Diffusive UV-Curable Resins for a Novel Slim Backlight System

We have developed light-diffusive UV-curable resins with well-controlled scattering properties by adjusting the diameter of the micro particles and the differential refractive index between UV-curable resin matrix and the micro particles. We expect that optical-patterned films for a slim backlight system can be obtained using them by a roll-to-roll continuous process.

New Precise Fabrication Technology for Lenticular Lens Sheet with Black Stripe Patterns by Using Photo-Sensitive Material with Surface Modifier

We have developed a new precise fabrication technology of a lenticular lens sheet with black stripe patterns for a rear-projection television. The black stripe patterns have to be accurately aligned to cylindrical lenses on the lenticular lens sheet and be able to absorb ambient light. Our proposed technology utilized a photo-sensitive material with a surface modifier which controls surface free energy for surface modification. Using this material, we could obtain two patterned areas which had different surface free energies. Furthermore, fabrication of black stripe patterns on the lenticular lens sheet was carried out by a self-alignment method. This lenticular lens sheet with black stripe patterns had similar optical properties compared with a conventional one.