Removable backlighting assembly for flat panel display subsystem

In a flat panel display subassembly, a display screen comprising:

• a thin film transparent flat panel display screen;
• a pair of light sources disposed along a first edge and a second edge, respectively, of said flat panel display screen for providing light wherein said first edge is opposite said second edge;
• a light pipe positioned to receive said light emitted from said pair of light sources and for uniformly distributing said light over said flat panel display screen;
• and
• a bi-directional light extraction pattern of dots disposed on one surface of said light pipe for extracting light from said light pipe to uniformly distribute light over said flat panel display screen, wherein said light extraction pattern comprises:
• first dots increasing in size, respectively, according to a distance away from said first edge along a first dimension, said first dimension being perpendicular to said first edge and said second edge;
• second dots increasing in size, respectively, according to a distance away from said second edge along said first dimension;
• and
• third dots decreasing in size, respectively, according to a distance away from a third edge along a second dimension, said second dimension being parallel to said first edge and wherein said third edge is perpendicular to said first edge.

A removable back-lighting assembly for providing light distribution uniformly over a flat panel display screen, said removable back-lighting assembly comprising:

• a door cover for providing structural support;
• a rear reflector disposed adjacent to said door cover;
• a light pipe disposed adjacent to said rear reflector with a light extraction pattern disposed in between, said light extraction pattern disposed onto a surface of said light pipe;
• a multi-layer structure disposed to cover said light pipe for providing uniform light diffusion and brightness enhancement;
• a first "L" shaped clamp disposed along a first edge of said light pipe for securing said multi-layer structure, said light pipe, and said rear reflector to said door cover, said first "L" shaped clamp having a thin lip of approximately 1.5 mm or less, said first "L" shaped clamp being removable and secured to said first edge using two corner-located screws;
• and
• a second "L" shaped clamp disposed along a second edge of said light pipe for securing said multi-layer structure, said light pipe, and said rear reflector to said door cover, said second "L" shaped clamp having a thin lip of approximately 1.5 mm or less, wherein said second edge is opposite to said first edge and wherein said second "L" shaped clamp is removable and secured to said second edge using two corner-located screws.

A removable back-lighting assembly for providing light distribution uniformly over a flat panel display screen, said removable back-lighting assembly for insertion into said flat panel display subsystem for direct viewing, said removable back-lighting assembly comprising:

• a door cover for providing structural support;
• a rear reflector disposed adjacent to said -door cover;
• a planar shaped light pipe disposed adjacent to said rear reflector with a light extraction pattern disposed in between, said light extraction pattern disposed onto a surface of said light pipe;
• a multi-layer structure disposed to cover said light pipe for providing light diffusion and brightness enhancement;
• a first "L" shaped clamp disposed along a first edge of said light pipe for securing said multi-layer structure, said light pipe, and said rear reflector to said door cover, said first "L" shaped clamp having a thin lip of approximately 2.0 mm or less, said first "L" shaped clamp being removable and secured to said first edge using two corner-located screws;
• and
• a second "L" shaped clamp disposed along a second edge of said light pipe for securing said multi-layer structure, said light pipe, and said rear reflector to said door cover, said second "L" shaped clamp having a thin lip of approximately 2.0 mm or less, wherein said second edge is opposite to said first edge and wherein said second "L" shaped clamp is removable and secured to said second edge using two corner-located screws.