摘要 |
Optical films for enhancing light extraction from self-emissive pixelated OLEDs, without introducing significant pixel blur, are disclosed. The extraction films include a flexible carrier film, and a first and second layer carried by the carrier film. The first layer has a nanovoided morphology, includes a polymer binder, and may have a refractive index less than 1.35 or 1.3. An embedded structured surface of light extraction elements is formed between the first and second layers. The extraction film includes a major coupling surface for attachment to an outer surface of the light source. The film is configured such that a land portion between the structured surface and the major coupling surface is thinner than a specified amount, e.g., less than 50, 25, or 10 microns, or less than a thickness of the carrier film. |
申请人 |
3M Innovative Properties Company |
发明人 |
THOMPSON, David S.;WOLK, Martin, B.;LAMANSKY, Sergey;YANG, Zhaohui;ZHANG, Jun-Ying;HAO, Encai;KOLB, William, Blake;SHERMAN, Audrey, A.;SCHAFFER, Kevin, R. |