Patent ID: 6279506
Filing Date: 2001-08-28
Classification: C23C

Abstract:
Reactor for coating flat substrates, comprising:a reaction vessel into which reaction gases can be introduced; anda substrate holder unit in the form of a carrier ring in which at least one substrate to be coated is held in at least one holder such that a main surface of the at least one substrate to be coated is oriented downward during a deposition operation and is aligned essentially in parallel to a flow direction of the reaction gases; whereinat least one space for a substrate is provided on the substrate holder unit;the at least one holder is constructed as a template which has openings for surfaces of the at least one substrate to be coated;a surface of the at least one holder extends at least approximately flush with a surface of the at least one substrate;the at least one holder is adapted to be introduced into the reactor together with the at least one substrate and to be removed again from it;the at least one holder comprises at its bottom surface three fingers leading out in a common central axis which is also an axis of rotation for the at least one substrate;the at least one holder is adapted for introducing the at least one substrate into the reactor vessel from below, lateral to the flow direction of the reaction gases, through a lower opening of the reactor vessel;the axis is provided gas-tightly but rotatably through a lower quartz plate which has larger dimensions than the lower opening of the reactor vessel; andthe quartz plate can be gas-tightly sealed to the lower opening of the reactor in the downward direction.