Back-lit displays with high illumination uniformity
Assignee3M Innovative Properties Company
InventorsKenneth A. Epstein, Kenneth J. Hanley, Gary T. Boyd
Life of this patent
Estimating the term…
Abstract
A directly illuminated display unit includes a display panel and one or more light sources disposed behind the display panel. The light sources are capable of producing illumination light. A diffusive light diverting layer is disposed between the one or more light sources and the display panel. The light diverting layer comprises first light diverting elements disposed on one of a first side of the light diverting layer facing display panel and second light diverting elements disposed on a second side of the light diverting layer facing away from the display panel. The diffusive light diverting layer further comprises diffusing particles disposed within a polymeric matrix.
Claims18
A directly illuminated display unit, comprising:
- a display panel;
- one or more light sources disposed behind the display panel and being capable of producing illumination light;
- a diffusive light diverting layer disposed between the one or more light sources and the display panel, the light diverting layer comprising first light diverting members disposed on a first side of the light diverting layer facing the display panel and second light diverting members disposed on a second side of the light diverting layer facing away from the display panel, the diffusive light diverting layer further comprising diffusing particles disposed within a polymeric matrix.
A unit as recited in claim 17, wherein the first and second light diverting planes are substantially perpendicular.
Dependencies are inferred from the claim text.