Patent ID: 8956898
Filing Date: 2015-02-17
Classification: H01L

Abstract:
1. A fabrication method for an organic EL device including a first pixel having a first insulating layer, a first reflection film provided on the first insulating layer, a second insulating layer provided on the first reflection film, a first pixel electrode provided on the second insulating layer, a first light-emitting layer provided on the first pixel electrode, and a first counter electrode provided on the first light-emitting layer, first-color light being resonated between the first reflection film and the first counter electrode, and a second pixel having the first insulating layer, a third insulating layer provided on the first insulating layer, a second reflection film provided on the third insulating layer, the second insulating layer provided on the second reflection film, a second pixel electrode provided on the second insulating layer, a second light-emitting layer provided on the second pixel electrode, and a second counter electrode provided on the second light-emitting layer, second-color light being resonated between the second reflection film and the second counter electrode, the method comprising: forming the third insulating layer on the first insulating layer; removing the third insulating layer in a first pixel region by etching the third insulating layer; forming the second insulating layer that has different thicknesses in the first pixel and the second pixel and has a flat first surface by forming a precursor insulating layer to continuously cover the first reflection film and the second reflection film and then planarizing an upper surface of the precursor insulating layer; and forming the first pixel electrode and the second pixel electrode on the first surface of the second insulating layer, wherein the first insulating layer is slower in the rate at which the layer is removed by the etching than the third insulating layer.