BACK-LIT DISPLAYS WITH HIGH ILLUMINATION UNIFORMITY
First Claim
1. A directly illuminated display unit, comprising:
- a display panel;
one or more light sources disposed behind the display panel, the one or more light sources being capable of producing illumination light, at least one of the one or more light sources being elongated parallel to a first axis;
a diffuser disposed between the display panel and the one or more light sources; and
a light diverting layer disposed between the one or more light sources and the diffuser, the light diverting layer comprising a first light-diverting surface facing the one or more light sources, the first light-diverting surface comprising a plurality of first light diverting elements substantially parallel to the first axis, and a second light-diverting surface facing the diffuser, the second light-diverting surface comprising a plurality of second light diverting elements elongated along a second axis non-parallel to the first axis.
2 Assignments
0 Petitions
Accused Products
Abstract
A directly illuminated display unit has a display panel and one or more light sources disposed behind the display panel. A diffuser is disposed between the one or more light sources and the display panel, and a light diverting layer is disposed between the one or more light sources and the diffuser. The light diverting layer has a first light-diverting surface facing the one or more light sources and a second light diverting surface facing the display panel. The light diverting layer diverts light passing from the one or more light sources to the diffuser, thus improving the uniformity of the light in the display unit.
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Citations
47 Claims
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1. A directly illuminated display unit, comprising:
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a display panel; one or more light sources disposed behind the display panel, the one or more light sources being capable of producing illumination light, at least one of the one or more light sources being elongated parallel to a first axis; a diffuser disposed between the display panel and the one or more light sources; and a light diverting layer disposed between the one or more light sources and the diffuser, the light diverting layer comprising a first light-diverting surface facing the one or more light sources, the first light-diverting surface comprising a plurality of first light diverting elements substantially parallel to the first axis, and a second light-diverting surface facing the diffuser, the second light-diverting surface comprising a plurality of second light diverting elements elongated along a second axis non-parallel to the first axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A backlight unit, comprising:
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a diffuser; a specular back reflector; a plurality of light sources disposed between the diffuser and the back reflector; and a light diverting layer disposed between the diffuser and the plurality of light sources; wherein the light sources have a source-to-source spacing S and a distance from the diffuser to the back reflector is D, and a value of the ratio S/D is at least about 3. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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Specification