Patent ID: 8136277

Claim:
A device comprising: a first display tile having a plurality of light-emitting diodes on a display side of the tile and a plurality of angle adjustment receptacles on a rear side of the tile, the plurality of angle adjustment receptacles extending through side edges of the first tile, wherein the display tile comprises a plurality of rows and a plurality of columns of pixels, each pixel comprising at least three light-emitting diode elements, each of the at least three light-emitting diode elements of a pixel emits a different light color, and light-emitting diode elements on a display side of the tile cover the angle adjustment receptacles from the display side; a first angle adjustment dowel piece having a first surface and a first dowel projecting away from the first surface, wherein when the first angle adjustment dowel piece is received by a first angle adjustment receptacle, the first dowel points towards a first side edge and a first angle is between the display side and the first surface; and a second angle adjustment dowel piece having a second surface and a second dowel projecting away from the second surface, wherein when the second angle adjustment dowel piece replaces the first angle adjustment dowel piece, a second angle, different from the first angle, is between the display side and the second surface.