Hybrid device and a method of producing electrically active components by an assembly operation

Abstract

The invention relates to a method of assembling first and second electronic components ( 2, 4 ), the first of the components being fitted with conductive connection contacts ( 42 ), the method comprising: a step of assembling the two components, the creation of at least one electrically active zone ( 40 ) in the second component, by diffusion of the material of the connection contacts from the first component into the second component.

1 . Method of assembling first and second electronic components ( 2 ,  4 ), the first of the components being fitted with conductive connection contacts ( 42 ,  44 ), comprising at least one material capable of diffusing into the second component, 
 the method comprising;    a step of assembling the two components, and    the creation of at least one electrically active zone ( 40 ) in the second component, by diffusion of said material of the connection contacts ( 42 ) from the first component into the second component.    
     
     
         2 . Method according to    claim 1   , in which the electrically active zone is created simultaneously with the assembly step.  
     
     
         3 . Method of assembly according to either one of claims  1  or  2 , in which the assembly step is carried out by hybridization of the second component onto the first using metal beads ( 44 ), said beads forming the conductive contacts.  
     
     
         4 . Method according to    claim 3   , in which the creation of the electrically active zone is followed by a step of coating the second component with a resin.  
     
     
         5 . Method according to one of    claims 1    to    4   , in which the first component ( 2 ) comprises a reading circuit.  
     
     
         6 . Method according to    claims 1    to    5   , in which the second component comprises a detection circuit.  
     
     
         7 . Method according to    claim 6   , in which the detection circuit is a circuit made of CdHgTe.  
     
     
         8 . Method according to one of the preceding claims, in which the material ( 42 ) of the connection contacts includes a doping agent material for the second component.  
     
     
         9 . Method according to    claim 8   , in which the material ( 42 ) of the connection contacts includes indium and/or arsenic and/or antimony and/or mercury.  
     
     
         10 . Method according to one of    claims 1    to    5   , in which the second component is a layer formed by epitaxy on a CdTe substrate.  
     
     
         11 . A hybrid device comprising assembled first and second components, the first component being fitted with at least one electrically conductive connection contact ( 42 ,  44 ), comprising at least one material capable of diffusing into the second component, and the second component having at least one zone doped with said material, each doped zone being arranged facing and in contact with a corresponding connection contact point.  
     
     
         12 . Device according to    claim 11   , in which the first component comprises a reading circuit.  
     
     
         13 . Device according to    claim 12   , in which the second component comprises a detection circuit.  
     
     
         14 . Device according to    claim 13   , in which the detection circuit is a circuit made of CdHgTe.  
     
     
         15 . Device according to    claim 11   , in which the material of the conductive connection contacts ( 42 ) includes indium and/or arsenic and/or antimony and/or mercury.  
     
     
         16 . Device according to    claim 11   , in which the connection contacts ( 42 ) comprise metal beads ( 44 ).  
     
     
         17 . Device according to    claim 11   , in which the first component comprises at least one diffusion barrier layer ( 41 ) supporting at least one connection contact ( 42 ).