3m Innovative Properties Company

Rosemount Inc.

Ghidewon Arefe

Sergey Lamansky

James M Nelson

Vivian Wynne Jones

William A Tolbert

Kenneth A Epstein

Adam D Haag

Steven J McMan

David Lyle Wehrs

Seong Taek Lee

Nathaniel K Naismith

Jonathan A Anim-Addo

Russell N Evans

Keith L Behrman

An emissive article includes an OLED having a light emission surface, a circular polarizer, and a light extraction film optically between the OLED and the circular polarizer and being optically coupled to the light emission surface. The light extraction film includes a two-dimensional structured layer of extraction elements having a first index of refraction and a pitch in a range from 400 to 800 nm and a backfill layer including a material having a second index of refraction different from the first index of refraction.

Emissive article with light extraction film

An emissive display comprising an OLED, a first birefringent reflective polarizer, a second birefringent reflective polarizer optically between the OLED and the first birefringent reflective polarizer, a first linear absorbing polarizer having a contrast ratio of less than 100:1 optically between the first birefringent reflective polarizer and the second birefringent reflective polarizer, a second linear absorbing polarizer having a contrast ratio of less than 100:1, where the first birefringent reflective polarizer is optically between the second linear absorbing polarizer and the first linear absorbing polarizer, and a structured optical film optically between the OLED and the second birefringent reflective polarizer.

Emissive display with hybrid polarizer

The present disclosure provides novel light emitting devices including AMOLED displays, based on transparent OLED architecture, where a laminated nanostructured light extraction film can produce axial and integrated optical gains as well as improved angular luminance and color. Generally, the transparent AMOLED displays () with laminated sub-micron extractors (-) include: (a) an extractor () on a transparent substrate () for light outcoupling on both sides of the transparent device (); or (b) an extractor () on a reflective film () for providing light outcoupling off the bottom side of the bottom-emitting (BE) AMOLED (); or (c) an extractor () on a light absorbing film () for providing outcoupling off the bottom side of the BE AMOLED () combined with improved ambient contrast.

Transparent OLED light extraction

A process pressure fluid transmitter is coupled to a differential pressure producer and measures a differential pressure across the producer. A statistical parameter is calculated upon successive differential pressure indications, and the calculated parameter is used to indicate wet gas flow. The indication can be generated locally at the process pressure transmitter, communicated via a wired process communication loop, communicated wirelessly, or any combination thereof.

Wet gas indication using a process fluid differential pressure transmitter

Growing community of inventors

Coon Rapids, MN, United States of America

Ghidewon Arefe