Ex parte KERBER - Page 9




          Appeal No. 1999-2576                                                        
          Application 08/836,960                                                      

          preventing                                      direct contact              
          between the                                     PSG film 103 and            
          the                                             polysilicon                 
          layers 108a                                     and 108b:                   
























          Figures 2(a)-(c) show the steps involved in forming this                    
          silicon nitride layer.:                                                     



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