Invention Grant
- Patent Title: Emissive article with light extraction film
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Application No.: US15791101Application Date: 2017-10-23
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Publication No.: US10358344B2Publication Date: 2019-07-23
- Inventor: Sergey Lamansky , Ghidewon Arefe , Vivian W. Jones , James M. Nelson
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- Applicant Address: US MN St. Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN St. Paul
- Agent Michael Stern
- Main IPC: B82Y20/00
- IPC: B82Y20/00 ; F21V8/00 ; H01L51/00 ; H01L51/52

Abstract:
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.
Public/Granted literature
- US20180047944A1 EMISSIVE ARTICLE WITH LIGHT EXTRACTION FILM Public/Granted day:2018-02-15
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