摘要:
This invention offers a manufacturing method to reduce a manufacturing cost of a semiconductor device having a through-hole electrode by simplifying a manufacturing process and to enhance yield of the semiconductor device. A first insulation film is formed on a top surface of a semiconductor substrate. A part of the first insulation film is etched to form an opening in which a part of the semiconductor substrate is exposed. Then a pad electrode is formed in the opening and on the first insulation film. A second insulation film is formed on a back surface of the semiconductor substrate. Then a via hole having an aperture larger than the opening is formed. And a third insulation film is formed in the via hole and on the second insulation film. The third insulation film on a bottom of the via hole is etched to expose the pad electrode. After that, a through-hole electrode and a wiring layer are formed in the via hole. Finally, the semiconductor substrate is cut and separated into a plurality of semiconductor dice.
摘要:
This invention provides a semiconductor device that can minimize deterioration of electric characteristics of the semiconductor device while minimizing the amount of etching required. In the semiconductor device of the invention, a pad electrode layer formed of a first barrier layer and an aluminum layer laminated thereon is formed on a top surface of a semiconductor substrate. A supporting substrate is further attached on the top surface of the semiconductor substrate. A second barrier layer is formed on a back surface of the semiconductor substrate and in a via hole formed from the back surface of the semiconductor substrate to the first barrier layer. Furthermore, a wiring layer is formed in the via hole so as to completely fill the via hole or so as not to completely fill the via hole. A ball-shaped terminal is formed on the wiring layer.
摘要:
This invention offers a manufacturing method to reduce a manufacturing cost of a semiconductor device having a through-hole electrode by simplifying a manufacturing process and to enhance yield of the semiconductor device. A first insulation film is formed on a top surface of a semiconductor substrate. A part of the first insulation film is etched to form an opening in which a part of the semiconductor substrate is exposed. Then a pad electrode is formed in the opening and on the first insulation film. A second insulation film is formed on a back surface of the semiconductor substrate. Then a via hole having an aperture larger than the opening is formed. And a third insulation film is formed in the via hole and on the second insulation film. The third insulation film on a bottom of the via hole is etched to expose the pad electrode. After that, a through-hole electrode and a wiring layer are formed in the via hole. Finally, the semiconductor substrate is cut and separated into a plurality of semiconductor dice.
摘要:
This invention provides an etching method for preventing deformation of an opening without extremely lowering productivity. This invention has a process for bonding a supporting board on a front surface of a semiconductor substrate to cover a pad electrode formed on the semiconductor substrate with a silicon oxide film interposed therebetween, a process for forming a via hole from a back surface of the semiconductor substrate to a surface of the pad electrode, a process for forming a first opening in the semiconductor substrate to a position where the silicon oxide film is not exposed with using etching gas containing SF6 and O2 at least, and a process for forming a second opening in the semiconductor substrate to a position where the silicon oxide film is exposed with using etching gas containing C4F8 and SF6 at least.
摘要:
A semiconductor device with improved reliability and its manufacturing method is offered. The semiconductor device of this invention includes a semiconductor substrate, a pad electrode formed on the semiconductor substrate through an insulation layer made of silicon oxide, silicon nitride or the like, a supporting plate bonded to a top surface of the semiconductor substrate to cover the pad electrode and a via hole formed in the semiconductor substrate and extending from a back surface of the semiconductor substrate to the pad electrode, wherein an aperture of the via hole at a portion close to the pad electrode is larger than an aperture of the via hole at a portion close to the back surface of the semiconductor substrate.
摘要:
A semiconductor device with improved reliability and its manufacturing method is offered. The semiconductor device of this invention includes a pad electrode formed on a semiconductor substrate through a first insulation layer, and a via hole formed in the semiconductor substrate and extending from a back surface of the semiconductor substrate to the pad electrode, wherein the via hole includes a first opening of which a diameter in a portion close to the pad electrode is larger than a diameter in a portion close to the back surface of the semiconductor substrate, and a second opening formed in the first insulation layer and continuing from the first opening, of which a diameter in a portion close to the pad electrode is smaller than a diameter in a portion close to the front surface of the semiconductor substrate.
摘要:
A semiconductor module includes a device mounting board and a semiconductor device mounted on the device mounting board. The device mounting board includes an insulating resin layer, a wiring layer provided on one main surface of the insulating resin layer, and bump electrodes, electrically connected to the wiring layer, which are protruded from the wiring layer toward the insulating resin layer. The semiconductor device has device electrodes which are disposed counter to a semiconductor substrate and the bump electrodes, respectively. The surface of a metallic layer provided on the device electrode lies on the same plane as the surface of a protective layer.
摘要:
In a semiconductor module where a metal sheet, an insulating layer and a circuit element are stacked in a manner that the insulating layer is penetrated with a bump structure, the connection reliability of the bump structure and the circuit element is enhanced. A semiconductor wafer is prepared where a semiconductor substrate having electrodes and protective film on the surface are arranged in a matrix shape. On the surface of the semiconductor substrate, an insulating layer is held between the substrate and a copper sheet, integrally formed with bumps, having grooves in the vicinity of the bumps. The semiconductor substrate, the insulating layer and the copper sheet are press-bonded by a press machine into a single block. The bump penetrates the insulating layer, and the bump and the electrode are electrically connected together. An extra part of the insulating layer pushed out by the bump flows into the groove.
摘要:
A semiconductor device with improved reliability and its manufacturing method is offered. The semiconductor device of this invention includes a pad electrode formed on a semiconductor substrate through a first insulation layer, and a via hole formed in the semiconductor substrate and extending from a back surface of the semiconductor substrate to the pad electrode, wherein the via hole includes a first opening of which a diameter in a portion close to the pad electrode is larger than a diameter in a portion close to the back surface of the semiconductor substrate, and a second opening formed in the first insulation layer and continuing from the first opening, of which a diameter in a portion close to the pad electrode is smaller than a diameter in a portion close to the front surface of the semiconductor substrate.
摘要:
A fabrication method of a semiconductor device improved in the polishing rate of an insulation film and less likely to generate a defect during polishing is obtained. In this fabrication of a semiconductor device, impurities are introduced into a first insulation film, and then planarization is effected by polishing the surface of the first insulation film. Thus, the polishing rate of the portion of the first insulation film in which impurities are introduced is improved. Also a defect is not easily generated therein.