Patent ID: 7785948
Filing Date: 2010-08-31
Classification: H01L,Y02E,Y02P

Abstract:
1. A process for producing a sealing layer and/or a gate insulating layer of a thin film transistor, the thin film transistor comprised of the sealing layer formed of a thin film layer including a silicon oxide thin film located on a plastic substrate having plasticity, a gate electrode, the gate insulating layer formed of a thin film layer including a silicon oxide thin film, source and drain electrodes, and a semiconductor active layer, wherein the gate insulating layer has a surface roughness of 0.5 nm or less in a RMS value, the method of forming the sealing layer and/or the gate insulating layer comprising: preparing, as a starting material, a silicon compound having at least a silazane bond (Si—N) and a siloxane bond (Si—O) in a molecule; bringing the starting material into a solution; coating the solution to form a precursor layer of the gate insulating layer or a precursor layer of the sealing layer; and irradiating the precursor layer of the gate insulating layer or the precursor layer of the sealing layer with light in an atmosphere including oxygen to convert the precursor layer of the gate insulating layer or the precursor layer of the sealing layer to the gate insulating layer or to the sealing layer, respectively.