| 摘要 |
This backlight device 2 is provided with: a light source; a plurality of stacked optical sheets 22, 23, and 24 through which the light from the light source passes; and a frame member 28 to which the plurality of optical sheets 22, 23, and 24 are affixed. The respective plurality of optical sheets 22 to 24 is provided with protrusions 221, 231, and 241 that protrude in a direction parallel to the sheet surface at a portion of the edge thereof. The protrusions 221, 231, and 241 respectively have: first regions 221a, 231a, and 241a that are provided to the root side and that do not overlap the protrusions of the other optical sheets; and second regions 221b, 231b, and 241b that are provided to the tip side and of which at least a portion overlaps the protrusions of the other optical sheets. |
| 主权项 |
1. A backlight device, comprising:
a light source; a plurality of stacked optical sheets through which light from the light source passes; and a frame member that fixes the plurality of optical sheets in place, wherein each of the plurality of optical sheets is provided with a protrusion in a portion of an edge of each of the optical sheets, the protrusion protruding in a direction parallel to a surface of each of the optical sheets, wherein the protrusion provided in each of the plurality of optical sheets has: a first region that is directly connected to each of the optical sheets and that does not overlap a protrusion of another optical sheet; and a second region that is connected to each of the optical sheets through the first region and that overlaps the protrusion of said another optical sheet at least in part, and wherein at least a portion of the first region is not mounted on the frame member, and at least a portion of the second region is mounted on the frame member. |
