Light extraction apparatus and flexible oled displays

A flexible organic light-emitting diode (OLED) display comprising:

• a flexible substrate supporting an array of OLEDs, each OLED of the array of OLEDs having a top surface through which light is emitted;
• an array of a tapered reflectors, each tapered reflector of the array of tapered reflectors aligned with an OLED of the array of OLEDs, and each tapered reflector of the array of tapered reflectors comprising at least one side surface, a top surface, and a bottom surface coupled to the top surface of a respective OLED of the array of OLEDs, the top surface of each tapered reflector being larger in surface area than the bottom surface of each tapered reflector;
• and
• a flexible barrier film coupled to the top surface of each tapered reflector of the array of tapered reflectors.

A method for fabricating a flexible organic light-emitting diode (OLED) display, the method comprising:

• applying a first release layer on a first glass substrate;
• applying a flexible substrate on the first release layer;
• forming an array of OLEDs on the flexible substrate;
• applying a second release layer on a second glass substrate;
• applying a flexible barrier film on the second release layer;
• forming an array of tapered reflectors on the flexible barrier film, each tapered reflector of the array of tapered reflectors comprising at least one side surface, a top surface coupled to the flexible barrier film, and a bottom surface, the top surface being larger than the bottom surface;
• and
• applying the second substrate, the second release layer, the flexible barrier film, and the array of tapered reflectors to the array of OLEDs such that the bottom surface of each tapered reflector of the array of tapered reflectors is coupled to an OLED of the array of OLEDs.