Patent ID: 8591277
Filing Date: 2013-11-26
Classification: F21V,H01L

Abstract:
1. A method for manufacturing an organic electroluminescent display device, comprising: providing a substrate that is manufactured from plastic by one of: injection molding, embossing or photopolymeric replication and having a surface structure including neighboring rows of pixel pits or sub-pixel pits, the surface structure forming a boundary for at least a number of layers which are applied; applying an arrangement of layers to the substrate such that first conductors extend in a first direction and second conductors extend in a second direction, providing between crossings of the first and second conductors an organic electroluminescent compound which, under the influence of a voltage, emits light, wherein the applying an arrangement of layers includes: applying a first conductive layer by a sputtering process, the surface structure of the plastic substrate further comprising a plurality of shadowing structures, wherein between two neighboring rows of pixel pits an associated one of the plurality of shadowing structures extends, wherein a said shadowing structure that extends between two neighboring rows of pixel pits includes a number of parallel, narrow and deep grooves, wherein the width and depth of the grooves is configured such that with the sputtering process, parts of the shadowing structure are substantially not covered with the first conductive layer and that the electrical resistance prevailing there is larger than the resistance in the rest of the first conductive layer.