| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent wrinkles or the like on an optical film, and prevent noise generated when a side part of the optical film and an inner surface of a side wall of a frame abut on each other. <P>SOLUTION: A part of a diffusion film 11 is fixed in the frame 4 by forming a projection 12 for fixing in a center part of a first side part 11a of the diffusion film 11 and adhering the projection 12 for fixing and the frame 4. A projection 16 for position restriction for restricting an arrangement position of the diffusion film 11 in the frame 4 is formed on a second side part 11b facing to the first side part 11a of the diffusion film 11. A recessed part 17 for position restriction which is locked on the projection 16 for position restriction is formed in a position facing to the projection 16 for position restriction in a second side wall 3b of the frame 4. <P>COPYRIGHT: (C)2008,JPO&INPIT |
