Light-diffusing sheet member
AssigneeKeiwa Shoko Kabushiki Kaisha
InventorsTeruaki Konno, Koichi Sawada, Masahiro Kitamura
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Abstract
A light diffusing sheet member used as a diffusing plate of a liquid crystal display by which light transmitted from a light source is uniformly diffused so that the luminance of a screen of a light diffusing plate liquid crystal display portion is sufficient and a user can easily look at characters, graphics and the like displayed on the screen from different angles. A light diffusing sheet member comprises a base material sheet and a light diffusing layer applied on the top face of the base material sheet, and beads mixed therein. The beads have different sizes, and include particles buried in a synthetic resin and particles which at least partially project from the synthetic resin.
Claims4
A light-diffusing sheet member comprising a transparent base material sheet and a light-diffusing layer formed on the surface of said base material sheet and made of a transparent synthetic resin layer having transparent beads mixed therein;
- wherein said light-diffusing layer has beads of different particle sizes, the ratio of said beads to said synthetic resin layer is 30 to 90% by weight, and said light-diffusing layer has some of said beads buried therein and other of said beads projecting partially therefrom.
A light-diffusing sheet member comprising a base material sheet and a light-diffusing layer formed on the surface of said base material sheet and made of a synthetic resin layer having beads mixed therein;
- wherein said light-diffusing layer has beads of different particle sizes, and said light-diffusing layer has some of said beads buried therein and other of said beads projecting partially therefrom, said light-diffusing sheet member further comprising a metal deposition layer formed on the back of said base material sheet.
Dependencies are inferred from the claim text.