Multiple substrate and process for its production

A multiple substrate with a ceramic layer comprising:

• an array of a plurality of integral adjoining panels, said panels being arranged in at least two adjacent rows on said ceramic layer, with each of said two adjacent rows adjoining an adjacent row in a fixed axial direction (y-axis) which lies in a plane of said ceramic layer and having at least two panels adjoining one another in a second axial direction (x-axis) which lies in said plane of said ceramic layer,
• said panels being provided on at least one surface side of said ceramic layer with at least one metal coating,
• first predetermined break lines each delineated in said ceramic layer where said at least two panels in said rows adjoin one another,
• second predetermined break lines in said ceramic layer between said adjacent rows of panels,
• at least one first margin area at a periphery of said ceramic layer having at least one first additional metal surface extending in said second axial direction and bridging all said first predetermined break lines,
• said first margin area being defined by a first additional breaking line in said ceramic layer between said at least one first additional metal surface and said array of panels,
• at least one second margin area at said periphery of said ceramic layer having at least one additional external metal surface extending in said first axial direction and bridging all said second predetermined break lines, said second margin area being defined by a second additional external break line in said ceramic layer extending in said first axial direction between said at least one second additional metal surface and said array of panels, said at least one first margin area and said at least one second margin area enclosing an angle.