Patent ID: 9252364
Filing Date: 2016-02-02
CPC Classification: H01L

Claim Text:
1. A method of making organic light emitting diode array, the method comprising: providing a base defining a plurality of convexities spaced from each other; forming a plurality of first electrodes on the plurality of convexities, wherein the plurality of first electrodes are divided into a first group, a second group, and a third group; transfer printing a plurality of electroluminescent layers on the plurality of first electrodes, wherein transfer printing the plurality of electroluminescent layers comprises: applying a first electroluminescent film on a first template, wherein the first template has a first surface corresponding to the first group of the plurality of first electrodes and a second surface depressed from the first surface and corresponding to the second and third groups of the plurality of first electrodes; contacting the first group of the plurality of first electrodes with the first electroluminescent film, wherein the contacting the first group of the plurality of first electrodes with the first electroluminescent film comprises spacing the second and third groups of the plurality of first electrodes from the first electroluminescent film; separating the first group of the plurality of first electrodes from the first template so that a plurality of first electroluminescent layers are formed on the first group of the plurality of first electrodes; applying a second electroluminescent film on a second template, wherein the second template has a third surface corresponding to the second group of the plurality of first electrodes and a fourth surface depressed from the third surface and corresponding to the first and third groups of the plurality of first electrodes; contacting the second group of the plurality of first electrodes with the second electroluminescent film, wherein the contacting the second group of the plurality of first electrodes with the second electroluminescent film comprises spacing the first and third groups of the plurality of first electrodes from the second electroluminescent film; separating the second group of the plurality of first electrodes from the second template so that a plurality of second electroluminescent layers are formed on the second group of the plurality of first electrodes; applying a third electroluminescent film on a third template, wherein the third template has a fifth surface corresponding to the third group of the plurality of first electrodes and a sixth surface depressed from the fifth surface and corresponding to the first and second groups of the plurality of first electrodes; contacting the third group of the plurality of first electrodes with the third electroluminescent film, wherein the contacting the third group of the plurality of first electrodes with the third electroluminescent film comprises spacing the first and second groups of the plurality of first electrodes from the third electroluminescent film; separating the third group of the plurality of first electrodes from the third template so that a plurality of third electroluminescent layers are formed on the third group of the plurality of first electrodes; making a patterned second insulative layer to cover the plurality of first electrodes and expose the plurality of electroluminescent layers; and electrically connecting at least one second electrode to the plurality of electroluminescent layers.