Patent ID: 9111885
Filing Date: 2015-08-18
Classification: H01L,H05K

Abstract:
1. An organic thin film transistor comprising: an electronic substrate comprising circuit elements, the circuit elements of the electronic substrate comprising source and drain electrodes, a channel region being defined between the source and drain electrodes; a double bank well-defining structure disposed over the source and drain electrodes, the double bank well-defining structure comprising a first layer of insulating material and a second layer of insulating material thereover, the second layer of insulating material having a lower wettability than the first layer of insulating material, both the first layer of insulating material and the second layer of insulating material being exposed in wells defined by the double bank well-defining structure, the first layer of insulating material defining bottom portions of the wells and the second layer of insulating material defining top portions of the wells; and organic semiconductive material disposed in the wells defined by the double bank well-defining structure, wherein the first layer of insulating material comprises an organic polymer and the second layer of insulating material comprises a fluorinated organic polymer having inherently low wettability.