LG Display made a talk at the IMID conference in Korea and announced that it was working on a 77″ transparent flexible OLED. The panel uses top emission and uses a dual thin film encapsulation system based on two polyimide substrates rather than the metal bottom later for current OLEDs. The polyimide has barrier films on the outside and multi-barrier films on the inside. The display continues to use a WOLED approach, with a colour filter. The company claims that the transparency is 40% and the bending radius is 80mm.
The encapsulant layer was reduced from 100 μm to 20 μm to improve the flexibility.
We asked for a copy of the slides presented and reproduced by the blog, but LGD told us that it couldn’t release them. (BR)