preferably 45 to 70 u03bcm and most preferably 50 to 60 u03bcm fig1 illustrates an exemplary screen printing plate of the invention in fig1 the screen printing plate 1 includes a plurality of finger electrode openings 2 extending parallel to the printing direction shown by arrow and a bus bar electrode opening 3 of a broad width wb extending perpendicular to the printing direction the width wb is preferably 0 5 to 3 mm more preferably 1 to 2 mm in the screen printing plate 1 according to the invention the bus bar electrode opening 3 includes a plurality of blocked zones 4 arranged therein these blocked zones 4 are formed at positions aligned with the longitudinal direction of the finger electrode openings 2 the blocked zone 4 within the bus bar electrode opening 2 is preferably spaced apart a distance wc of 50 to 700 u03bcm more preferably 100 to 300 u03bcm from the boundary between finger electrode opening 2 and bus bar electrode opening 3 if the distance is less than 50 u03bcm then the amount of paste discharged may be reduced inviting breakage if the distance exceeds 700 u03bcm then the push out of paste by pressing of the squeegee becomes outstanding for a saddle phenomenon to occur leaving a risk of breakage due to differential shrinkage upon firing the spacing between blocked zones 4 is preferably 100.