Patent ID: 6635504
Filing Date: 2003-10-21
Classification: H01L

Abstract:
A method of manufacturing an organic EL display including a pixel region and a non-pixel region, the pixel region including a plurality of pixels, each pixel including at least two thin film transistors (TFTs), the non-pixel region including at least two TFTs having different conductive-types, the method comprising:depositing sequentially a transparent material layer and a first metal layer on a substrate; patterning simultaneously the transparent material layer and the first metal layer to form a pixel electrode, a first capacitor electrode, first and second source and drain electrodes on the pixel region, and first- and second-type source and drain electrodes on the non-pixel region; forming first and second semiconductor layers between the first and second source and drain electrodes, and first- and second-type semiconductor layers between the first- and second-type source and drain electrodes, respectively; forming an insulating layer having contact holes over the substrate; depositing a second metal layer over the whole surface of the substrate; patterning the second metal layer to form first and second gate electrodes and a first-type gate electrode, a second capacitor electrode, a first impurity shielding layer, the first impurity shielding layer formed over the second-type semiconductor layer; ion-implanting a first conductive type impurity to form first and second source and drain regions and first-type source and drain regions, respectively on both end portions of the first and second semiconductor layer and the first-type semiconductor layer; depositing a second impurity shielding layer over the whole surface of the substrate; patterning the first impurity shielding layer and a portion of the second impurity shielding layer to form a second-type gate electrode; ion-implanting a second conductive type impurity to form second-type source and drain regions on both end portions of the second-type semiconductor layer; forming a planarization layer to expose a portion of the pixel electrode; and forming an EL light-emitting layer on the exposed portion of the pixel electrode.