| 摘要 |
A method and device for improving lighting of a display having a top surface for viewing. The device includes a light guiding panel located substantially on the top surface of the display and at least one linear light source located adjacent to the light guiding panel for providing light thereto, wherein the light guiding panel has a first surface adjacent to the top surface of the display, a second surface opposite to the first surface, and at least one side edge for admitting a portion of the light provided by the linear light source through the side edge into the light guiding panel between the first and second surfaces; and the second surface includes a plurality of elongated grooves having dense-rare boundaries for reflecting part of the admitted light in a total-internal reflection fashion towards the display through the first surface of the light guiding panel, and wherein the dense-rare boundaries have a distribution density which varies depending on a distance between the dense-rare boundaries and the side edge. |
