| 摘要 |
PURPOSE: A diffusion sheet is provided to improve brightness using an air layer formed in an optical diffusion layer by controlling only the size of optical diffusion particles while not adding a separate process or material. CONSTITUTION: A diffusion sheet is formed in the one surface of a base material layer(10) and includes a binder and a light diffusion layer(20). Optical diffusion particles include first optical diffusion particles(21) of 90-99 wt% and second optical diffusion particles(22) of 1-10 wt%, and the diameter difference therebetween is 15-35μm. An air layer(23) is formed by the diameter difference between the first optical diffusion particles and the second optical diffusion particles contained in the optical diffusion layer. |
