Thin film encapsulated flexible organic electroluminescent displays

Chwang, Anna B.; Rothman, Mark A.; Mao, Sokhanno Y.; Hewitt, Richard H.; Weaver, Michael S.; Silvernail, Jeff A.; Rajan, Kamala; Hack, Michael; Brown, Julie J.; Chu, Xi; Moro, Lorenza; Krajewski, Todd; Rutherford, Nicole
July 2003
Applied Physics Letters;7/21/2003, Vol. 83 Issue 3, p413
Academic Journal
We describe encapsulated passive matrix, video rate organic light-emitting diode (OLED) displays on flexible plastic substrates using a multilayer barrier encapsulation technology. The flexible OLED (FOLED[SUPTM]) displays are based on highly efficient electrophosphorescent OLED (PHOLED[SUPTM]) technology deposited on barrier coated plastic (Flexible Glass[SUPTM] substrate) and are hermetically sealed with an optically transmissive multilayer barrier coating (Barix[SUPTM] encapsulation). Preliminary lifetime to half initial luminance (L[SUB0] ∼ 100 cd/m[SUP2]) of order 200 h is achieved on the passive matrix driven encapsulated 80 dpi displays; 2500 h lifetime is achieved on a dc tested encapsulated 5 mm[SUP2] FOLED test pixel. The encapsulated displays are flexed 1000 times around a 1 in. diameter cylinder and show minimal damage.


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