Thin multimode tablet backlight

摘要

A multimode edge-light configured for providing reduced depth and improved multimode edge uniformity is provided. The multimode edge-light may be suitable for sun light readability and use with night vision goggles. The multimode edge-light includes a support base and a first and second set of light-emitting diode (LED) modules electronically connected to the support base. The first set of LED modules is positioned adjacent to the light guide, and the second set of LED modules is positioned separate from the light guide. The multimode edge-light also includes an infrared filter configured for filtering light from only the second set of LED modules positioned on a surface of the support base. In operation of the multimode edge-light, at least a portion of the first set of LED modules and at least a portion of the second set of LED modules are selectively energized for providing a plurality of operation modes.

主权项

1. A multimode edge-light, the multimode edge-light configured for directing light to a light guide, the multimode edge-light comprising:
a support base; a first set of light-emitting diode (LED) modules electronically connected to the support base, the first set of LED located adjacent to the light guide, the first set of LED modules comprising side-emitting LEDs; a second set of LED modules electronically connected to the support base, the second set of LED modules positioned separate from the light guide, the second set of LED modules comprising side-emitting LEDs; a filter positioned on a surface of the support base, the filter configured for filtering light from the second set of LED modules only; wherein at least a portion of the first set of LED modules and at least a portion of the second set of LED modules are selectively energized for providing a plurality of operation modes to the multimode edge-light.