Ex parte HEBERT - Page 2




          Appeal No. 1999-0848                                                        
          Application No. 08/634,310                                                  


          § 112, second paragraph, rejection of claims 9-12 and 29-36.                
          Accordingly, only the final rejection of claims 2-6, 8, and 10-             
          12 is before us on appeal.                                                  
               The claimed invention relates to a semiconductor device                
          having increased breakdown voltage in which a field oxide                   
          surrounds a device region formed in a surface region of a                   
          semiconductor body.  The field oxide includes an etched recessed            
          portion of reduced thickness in which a conductive plate is                 
          formed.  The conductive plate is capacitively coupled to the                
          semiconductor body to enhance the breakdown voltage of a p-n                
          junction of a device formed within the device region.                       
               Representative claim 8 is reproduced as follows:                       
          8.  A semiconductor device having increased breakdown voltage               
          comprising:                                                                 
               a semiconductor body having a surface region of one                    
          conductive-type abutting a surface of said semiconductor body,              
               a device region formed in said surface region of opposite              
          conductive-type, said device region abutting said surface,                  
               a field oxide on said surface and surrounding said device              
          region, said field oxide including a recessed portion of reduced            
          thickness in the range of about 0.6-1.4Fm adjacent to said                  
          device region,                                                              
               a device within said device region having a p-n junction               
          which terminates under said recessed portion of said field                  
          oxide, and                                                                  
                                          2                                           





Page:  Previous  1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  Next 

Last modified: November 3, 2007