| 摘要 |
<P>PROBLEM TO BE SOLVED: To efficiently resolve the problem of moire patterns and to standardize intervals and thickness of reflecting structures. <P>SOLUTION: An optical member 2 included in a backlight module includes a plurality of microstructures 22 and a plurality of reflecting structures 23, and the microstructures 22 extend along a first direction and are arrayed on a light output surface 21 along a second direction, and first curves and second curves are not equally spaced from each other neither parallel with each other in the second direction, and respective reflecting structures extend along the first direction and are arrayed on a light input surface along the second direction, and a position of each reflecting structure corresponds to an intersection between two microstructures, and a thickness t from each reflecting structure to the light input surface, a width P being a length of each microstructure along the second direction, and a refractive index n of the optical member satisfy expression: tan<SP>-1</SP>(P/10t)>sin<SP>-1</SP>(1/n). <P>COPYRIGHT: (C)2011,JPO&INPIT |
