Segmented backlight for dynamic contrast
Systems and methods for increasing dynamic contrast in a liquid crystal display (LCD) may include a segmented backlight that may include one or more segments and one or more sets of light emitting diodes (LEDs). Each set of LEDs may be configured to illuminate a corresponding segment and each segment may include a notch(es) configured as a light barrier to reduce light leakage to non-adjacent segments. The notch(es) may be of variable length, depth, and width and may be three-dimensional, having a width the varies along the depth and length of the notch and a depth that varies along the width and length of the notch. In some embodiments, the notch(es) may be reflective, some degree of opaque, and/or blackened.
1. A segmented backlight, comprising:
a plurality of segments, each segment of the plurality of segments comprising a plurality of notches, where each notch of the plurality of notches is configured as a light barrier that reduces light leakage to non-adjacent segments; and
a plurality of sets of light emitting diodes (LEDs) configured to illuminate the segmented backlight, wherein each set of LEDs of the plurality of sets of LEDs illuminates a corresponding segment of the plurality of segments.
2. The segmented backlight of claim 1 ,
wherein at least one dimension of at least a portion of the plurality of notches varies along the at least one dimension.
3. The segmented backlight of claim 1 ,
wherein at least two dimensions of at least a portion of the plurality of notches independently vary along each of the at least two dimensions.
4. The segmented backlight of claim 1 ,
wherein at least a portion of the plurality of notches is arranged to be perpendicular to the one or more sets of LEDs.
5. The segmented backlight of claim 1 ,
wherein at least a portion of the plurality of notches is three-dimensional, having a width that varies along the depth and length of the notch and a depth that varies along the width and length of the notch.
6. The segmented backlight of claim 1 ,
wherein at least a portion of the plurality of notches is configured to be reflective.
7. The segmented backlight of claim 1 ,
wherein at least a portion of the plurality of notches is configured to be opaque.
8. The segmented backlight of claim 1 ,
wherein at least a portion of the plurality of notches is configured to be blackened.
9. The segmented backlight of claim 1 ,
wherein the segmented backlight is comprised in a liquid crystal display (LCD).
10. The segmented backlight of claim 9 ,
wherein the LCD is comprised in a wireless station.
11. The segmented backlight of claim 9 ,
wherein the segmented backlight is comprised in an LCD comprised in a three-dimensional stereoscopic display system.
12. The segmented backlight of claim 11 ,
wherein the three dimensional stereoscopic display system is a wireless station.
13. A wireless station, comprising:
at least one antenna;
at least one radio, wherein the at least one radio is configured to perform wireless communication via the at least one antenna using at least one radio access technology (RAT);
a liquid crystal display system, comprising an LCD panel and a light source, wherein the light source is configured to illuminate the LCD panel, wherein the light source comprises a plurality of segments, wherein at least one segment of the plurality of segments comprises a plurality of notches, wherein at least one notch of the plurality of notches is configured to reduce light leakage to non-adjacent segments of the plurality of segments, wherein the at least one segment is illuminated via a set of light emitting diodes (LEDs); and
a processing element coupled to the at least one radio and the LCD display system, wherein the processing element is configured to cause the wireless station to provide a voltage signal to the set of LEDs to illuminate the at least one segment of the light source.
14. The wireless station of claim 13 ,
wherein at least one dimension of at least a portion of the plurality of notches varies along the at least one dimension.
15. The wireless station of claim 13 ,
wherein at least two dimensions of at least a portion of the plurality of notches independently vary along each of the at least two dimensions.
16. The wireless station of claim 13 ,
wherein at least a portion of the plurality of notches is arranged to be perpendicular to the one or more sets of LEDs.
17. The wireless station of claim 13 ,
wherein at least a portion of the plurality of notches is configured to be reflective.
18. The wireless station of claim 13 ,
wherein at least a portion of the plurality of notches is configured to be opaque.
19. The wireless station of claim 13 ,
wherein at least a portion of the plurality of notches is configured to be blackened.
20. A liquid crystal display (LCD) system, comprising:
an LCD panel;
a light source configured to illuminate the LCD panel, wherein the light source comprises:
one or more segments, wherein each segment of the one or more segments comprise a plurality of notches, wherein each notch of the plurality of notches is configured as a light barrier, wherein the light barrier reduces light leakage to non-adjacent segments; and
one or more sets of light emitting diodes (LEDs), wherein each set of LEDs illuminates a corresponding segment of the one or more segments; and
control circuitry in communication with the light source and the LCD panel, wherein the control circuitry is configured to provide a voltage signal to the one or more sets of LEDs to illuminate the one or more segments of the light source.