| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical sheet for display reducing warp due to thermal expansion of integrated optical sheets, even when the optical sheets are formed by integrally adhering a plurality of optical elements constituted of materials different in linear thermal expansion coefficient, and preventing deterioration in display quality, and to provide a backlight and a display device, using the optical sheet. <P>SOLUTION: The optical sheet is constituted so that an optical functional member 402 is bonded to a light emission surface 4012a of a light diffusing layer and a warp prevention layer 403 is bonded to a light incident surface 402b of the light diffusing layer 4012, wherein the warping prevention layer 403 has a linear thermal expansion coefficient equal to that of the optical functional member 402 and, thereby, the warp of the optical functional member and the light diffusing layer due to thermal expansion can be suppressed. <P>COPYRIGHT: (C)2009,JPO&INPIT |
