Backlight for video display
AssigneeIgt
InventorsChauncey W. GRISWOLD, Gregory A. SILVA, Matthew A. FRANICH, James Stephen EMSLIE
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Abstract
A gaming system including an electronic gaming machine (EGM) having a backlit video display, is described. In particular, the EGM can be configured with a display that allows display elements, such as mechanical stepper reels, positioned behind the display to be either revealed or obscured by using directional lighting. The display assembly can include an edge-lit light guide having different regions that can extract light coming from a particular direction.
Claims24
A video display assembly on an electronic gaming machine for a wager-based game, the video display assembly comprising:
- a video display;
- a light guide positioned behind the video display, wherein the light guide comprises a continuous substrate having a window portion and a surrounding portion around the window portion, wherein the window portion is substantially transparent;
- a first light source for illuminating the window portion, the first light source being positioned along a first edge of the light guide;
- and
- features in a viewing surface of the window portion to extract light from the first light source.
A method of making a video display assembly in an electronic gaming machine for a wager-based game, the method comprising:
- providing a video display;
- positioning a light guide behind the video display, wherein the light guide comprises a continuous substrate having a window portion and a surrounding portion around the window portion, wherein the window portion is substantially transparent and has features in a viewing surface;
- and
- positioning a first light source along a first edge of the light guide, wherein the features in the viewing surface of the window portion are oriented to extract light from the first light source.
A method of operating a backlit video display assembly in an electronic gaming machine for a wager-based game, the method comprising controlling a first light source to reveal or obscure at least one display element behind a window portion of a light guide, wherein the first light source is positioned along a first edge of the light guide, wherein the light guide comprises a continuous substrate having the window portion and a surrounding portion around the window portion, wherein the window portion is substantially transparent and has features in a viewing surface configured to extract light from the first light source.
A video display assembly on an electronic gaming machine for a wager-based game, the video display assembly comprising:
- a video display;
- a first light guide positioned behind the video display, the first light guide comprising a substantially transparent window portion;
- and
- a first light source for illuminating the window portion, the first light source being positioned along a first edge of the light guide, wherein the first light guide includes features in a viewing surface of a window portion to extract light from the first light source.
Dependencies are inferred from the claim text.