Method of manufacturing an OLED device with a curved light emitting surface
View Patent ↗A method of manufacturing an OLED device with a curved light-emitting surface comprising: a) forming a flexible substrate and providing the flexible substrate in a flat configuration; b) forming one or more OLEDs having a first electrode, one or more layers of organic material, at least one of which is light emitting formed over the first electrode, and a second electrode formed over the one or more layers of organic material, on the substrate; c) forming a rigid, curved, encapsulating cover; d) conforming the flexible substrate, electrodes, and one or more layers of organic material to the rigid, curved, encapsulating cover; and e) sealing the conformed flexible substrate, electrodes, and one or more layers of organic material to the rigid, curved, encapsulating cover.
1. A method of manufacturing an OLED device with a curved light-emitting surface comprising:
a) forming a flexible substrate and providing the flexible substrate in a flat configuration;
b) forming one or more OLEDs having a first electrode, one or more layers of organic material, at least one of which is light emitting formed over the first electrode, and a second electrode formed over the one or more layers of organic material, on the substrate;
c) forming a rigid, curved, encapsulating cover;
d) conforming the flexible substrate, electrodes, and one or more layers of organic material to the rigid, curved, encapsulating cover; and
e) sealing the conformed flexible substrate, electrodes, and one or more layers of organic material to the rigid, curved, encapsulating cover.
2. The method of claim 1 , wherein the rigid, curved encapsulating cover includes at least two opposing raised edges, and an outside edge of the flexible substrate is positioned adjacent to an inside surface of each raised edge.
3. The method of claim 2 , wherein the rigid, curved encapsulating cover includes two pairs of opposing raised edges, and an outside edge of the flexible substrate is positioned adjacent to a corresponding surface of each raised edge.
4. The method of claim 2 , wherein the rigid, curved encapsulating cover is sealed to the flexible substrate along the perimeter of a main surface of the flexible substrate and/or along the outside edge of the flexible substrate.
5. The method of claim 1 , wherein the flexible substrate is conformed to the curved cover so that the OLEDs are on the concave side of the curved cover.
6. The method of claim 1 , wherein the flexible substrate is conformed to the curved cover so that the OLEDs are on the convex side of the curved cover.
7. The method of claim 1 , further including providing spacers located between the OLEDs and a main surface of the rigid, curved encapsulating cover to prevent the OLEDs from contacting the main surface of the encapsulating cover.
8. The method of claim 7 , wherein the spacers comprise raised areas formed over the flexible substrate which project above the OLEDs, or raised areas formed over the main surface of the encapsulating cover.
9. The method of claim 7 , wherein the spacers are formed separately and located over the OLEDs.
10. The method of claim 7 , further including the step of providing an adhesive on the spacers.
11. The method of claim 1 , wherein the flexible substrate is initially formed with a curved surface and subsequently compressed or tensioned to provide the flat configuration.
12. The method of claim 11 , wherein the flexible substrate is initially formed with a curved surface that conforms to the rigid, curved encapsulating cover.
13. The method of claim 1 , wherein the flexible substrate and/or cover comprises glass.