×

Light Extraction Films for Increasing Pixelated OLED Output with Reduced Blur

  • US 20120099323A1
  • Filed: 10/20/2010
  • Published: 04/26/2012
  • Est. Priority Date: 10/20/2010
  • Status: Active Grant
First Claim
Patent Images

1. An optical extraction film for enhancing light extraction from a self-emissive pixelated light source that has an outer surface, the extraction film having a major coupling surface adapted to attach to the outer surface of the light source, the extraction film comprising:

  • a flexible carrier film; and

    a first and second layer carried by the carrier film, the first and second layers defining therebetween an embedded interface that forms a structured surface of light extraction elements;

    wherein the first layer has a nanovoided morphology and comprises a polymer binder, the first layer also being disposed between the second layer and the carrier film; and

    wherein the second layer has a refractive index greater than that of the first layer, and the first layer has a refractive index less than 1.35.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×