Patent ID: 6534845
Filing Date: 2003-03-18
Classification: H01L

Abstract:
A semiconductor device, comprising:a semiconductor chip having a top surface and a bottom surface, the bottom surface being opposite to the top surface and having a plurality of grooves formed therein, and a first side and a second side, the first side being longer than the second side, all grooves in the bottom surface, including all of the plurality of grooves, extending in a direction parallel to the first side; a plurality of electrodes formed on the top surface; and a package sealing the semiconductor chip including the grooves, and the electrodes; wherein the package has an upper portion provided on the top surface of the semiconductor chip and a lower portion provided on the bottom surface thereof, and wherein a depth of the grooves is in a range from approximately {fraction (1/40)} to approximately &frac13; of the thickness of the lower portion.