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:
one or more segments; and
one or more sets of light emitting diodes (LEDs) configured to illuminate the segmented backlight, wherein each set of LEDs illuminates a corresponding segment of the one or more segments;
wherein each segment of the one or more segments comprise:
one or more notches, wherein each notch of the one or more notches is configured as a light barrier, wherein the light barrier reduces light leakage to non-adjacent segments.
2. The segmented backlight of claim 1 ,
wherein at least one dimension of at least a portion of the one or more 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 one or more 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 one or more 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 one or more notches are 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 one or more notches is configured to be reflective.
7. The segmented backlight of claim 1 ,
wherein at least a portion of the one or more notches is configured to be opaque.
8. The segmented backlight of claim 1 ,
wherein at least a portion of the one or more 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 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 one or more notches, wherein each notch of the one or more 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.
14. The LCD system of claim 13 ,
wherein at least one dimension of at least a portion of the one or more notches varies along the at least one dimension.
15. The LCD system of claim 13 ,
wherein at least two dimensions of at least a portion of the one or more notches independently vary along each of the at least two dimensions.
16. The LCD system of claim 13 ,
wherein at least a portion of the one or more notches is arranged to be perpendicular to the one or more sets of LEDs.
17. The LCD system of claim 13 ,
wherein at least a portion of the one or more notches is configured to be reflective.
18. The LCD system of claim 13 ,
wherein at least a portion the one or more notches is configured to be opaque.
19. The LCD system of claim 13 ,
wherein at least a portion of the one or more notches is configured to be blackened.
20. 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 at least one notch, wherein the at least one notch 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
one or more processors coupled to the at least one radio and the LCD display system, wherein the one or more processors are 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.