Light-diffusing film and screen including the same
AssigneeSony Corporation
InventorsYukio Miyaki, Hiroyuki Kiso, Tsutomu Nagahama
Life of this patent
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Abstract
A light-diffusing film and screen including same are provided. The light-diffusing film having anisotropy in the diffusion angle includes a translucent support, and a translucent resin layer having irregularities on the surface thereof and being provided on the translucent support. In the light-diffusing film, the maximal value of the loss tangent (tan δ) determined from a dynamic viscoelasticity of the light-diffusing film lies in a temperature range of 0° C. to 60° C.
Claims9
A light-diffusing film having anisotropy in a diffusion angle, the light-diffusing film comprising:
- a translucent support;
- and
- a translucent resin layer having irregularities on a surface thereof and being provided on the translucent support, and
- wherein a maximal value of a loss tangent (tan δ) determined from a dynamic viscoelasticity of the light-diffusing film is provided in a temperature range from about 0° C. to about 60° C.
A screen comprising:
- a light-diffusing film having anisotropy in a diffusion angle, the light diffusion film including:
- a translucent support;
- and
- a translucent resin layer having irregularities on a surface thereof and being provided on the translucent support,
- wherein a maximal value of a loss tangent (tan δ) determined from a dynamic viscoelasticity of the light-diffusing film is provided in a temperature range from about 0° C. to about 60° C., and wherein
- a reflective layer provided on a surface of the light-diffusing film, the surface being opposite to another surface having a translucent resin layer.
A screen comprising:
- a light-diffusing film having anisotropy in a diffusion angle, the light diffusion film including:
- a translucent support;
- and
- a translucent resin layer having irregularities on a surface thereof and being provided on the translucent support,
- wherein a maximal value of a loss tangent (tan δ) determined from a dynamic viscoelasticity of the light-diffusing film is provided in a temperature range from about 0° C. to about 60° C., and
- wherein the light-diffusing film transmits light incident from a surface opposite to another surface having the translucent resin layer, and diffuses and emits the light from the translucent resin layer.
Dependencies are inferred from the claim text.