| 摘要 |
<p>This invention provides a light diffusing sheet comprising a transparent film and a light diffusing layer provided on at lest one side of the transparent film, the light diffusing layer comprising a group of at least one type of fine particles dispersed in a light transparent resin, characterized in that the absolute value of the difference in refractive index between the light transparent resin constituting the light diffusing layer and the group of at least one type of fine particles is not less than 0.05; a light diffusing plate characterized by comprising a transparent support and a light diffusing layer provided on at least one side of the transparent support, the light diffusing layer comprising a group of at least one type of fine particles dispersed in a light transparent resin, the absolute value of the difference in refractive index between the light transparent resin constituting the light diffusing layer and the group of at least one type of fine particles being not less than 0.05; and a light diffusing plate characterized by comprising a light diffusing sheet applied onto at least one side of the transparent support with the aid of an adhesive or a pressure-sensitive adhesive, the light diffusing sheet comprising a transparent film and a light diffusing layer provided on one side of the transparent film and formed of a group of at least one type of fine particles dispersed in a light transparent resin, the absolute value of the difference in refractive index between the light transparent resin constituting the light diffusing layer and the group of at least one type of fine particles being not less than 0.05. The light diffusing sheet and light diffusing plates, while maintaining basic optical properties such as excellent light diffusing properties and light focusing properties and, at the same time, high total light transmittance and brightness, can reduce the members of a backlight unit and, at the same time, is excellent in scratch resistance of the light diffusing layer, and thus is suitable for used in a backlight unit in a liquid crystal display device.</p> |
