Low Profile and High Efficiency Light Device for Backlighting Applications

A light source comprising:

• a flexible substrate having a dielectric layer sandwiched between top and bottom metal layers, said flexible substrate being divided into first and second regions;
• and
• a plurality of dies bonded to said bottom layer in said first region, each die comprising a semiconductor light emitting device that emits light, said first region being characterized by a normal to said bottom layer in said first region, at least one of said top and bottom metal layers comprising a plurality of electrical traces for connecting said dies to circuitry that is external to said light source;
• wherein said top metal layer of said substrate is reflective in said second region, said substrate being bent such that said first region is at an angle with respect to said second region and a portion of said light emitted from said dies at an initial angle greater than zero to said normal striking said second region and being reflected therefrom into a direction having an angle with respect to said normal that is less than said initial angle.