Semiconductor device and method for manufacturing the same
First Claim
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1. A method for manufacturing a semiconductor device, comprising:
- a step of forming projection electrodes on a surface at a front side of a semiconductor substrate,after said step of forming projection electrodes, a step of forming a surface resin layer on the surface of the semiconductor substrate,a step of forming a back side resin layer on a back side of the semiconductor substrate so that the surface resin layer and the back side resin layer have substantially the same thickness respectively,a surface grinding step of exposing the projection electrodes from the surface resin layer by polishing or grinding the surface resin layer,bracing the substrate with the back side resin layer until after the surface grinding step, andafter said surface grinding step, a back side grinding step of thinning the semiconductor substrate by removing the back side resin layer, through polishing or grinding, from the semiconductor substrate provided with the surface resin layer and the back side resin layer, and by further polishing or grinding the back side of the semiconductor substrate from which the back side resin layer has been removed.
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Abstract
A method for manufacturing a semiconductor device having projection electrodes on the surface of a semiconductor substrate. This method include an electrode forming step of forming the projection electrodes on the surface of the semiconductor substrate, a step of forming a protective resin layer on the whole surface of the semiconductor substrate provided with the projection electrodes, a back side grinding step of thinning the semiconductor substrate by polishing or grinding the back side of the semiconductor substrate, and a surface grinding step of exposing the projection electrodes by polishing or grinding the surface side of the semiconductor substrate.
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Citations
11 Claims
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1. A method for manufacturing a semiconductor device, comprising:
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a step of forming projection electrodes on a surface at a front side of a semiconductor substrate, after said step of forming projection electrodes, a step of forming a surface resin layer on the surface of the semiconductor substrate, a step of forming a back side resin layer on a back side of the semiconductor substrate so that the surface resin layer and the back side resin layer have substantially the same thickness respectively, a surface grinding step of exposing the projection electrodes from the surface resin layer by polishing or grinding the surface resin layer, bracing the substrate with the back side resin layer until after the surface grinding step, and after said surface grinding step, a back side grinding step of thinning the semiconductor substrate by removing the back side resin layer, through polishing or grinding, from the semiconductor substrate provided with the surface resin layer and the back side resin layer, and by further polishing or grinding the back side of the semiconductor substrate from which the back side resin layer has been removed. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for manufacturing a semiconductor device, comprising:
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a chip bonding step of bonding a plurality of semiconductor chips face-down onto a surface of a semiconductor substrate with active surfaces of the semiconductor chips opposed to the surface of the semiconductor substrate, in such a manner that the plurality of semiconductor chips and substrate define chip-on-chip structures, an electrode forming step of forming a plurality of projection electrodes on the surface of the semiconductor substrate, including forming each of the projection electrodes with a height such that the top end each projection electrode is between the height of the active surface of the semiconductor chips and a height of an inactive surface of the semiconductor chips, a resin sealing step of sealing, with a protective resin, the semiconductor chips and the exposed surface of the semiconductor substrate after forming the projection electrodes in such a manner that head portions of the projection electrodes are exposed, and a cutting out step of taking out individual pieces of chip-on-chip type semiconductor devices by cutting the semiconductor substrate along predetermined cutting lines. - View Dependent Claims (8, 9, 10, 11)
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Specification