Abstract:
PROBLEM TO BE SOLVED: To provide an inexpensive semiconductor device that prevents a migration phenomenon of metal, and to provide a method of manufacturing the semiconductor device.SOLUTION: The semiconductor device 1 includes: a plurality of re-wiring lines 19 formed on an upper surface of a semiconductor substrate 11 having a plurality of connection terminals 12 and each having one end connected to a connection terminal 12; a plurality of columnar electrodes 21 each formed on an other upper surface of a re-wiring line 19; an insulating film 15 covering at least side faces of the re-wiring lines 19 and side faces of the columnar electrodes 21 and exposing upper surfaces of the columnar electrodes 21; and a sealing film 22 which seals a surface of the insulating film 15 and exposing the upper surfaces of the columnar electrodes 21. The insulating film 15 is formed by applying and curing a resin material.
Abstract:
PROBLEM TO BE SOLVED: To prevent a crack of a solder ball generated due to a step part between the upper surface of a sealing film and that of an electrode for external connection. SOLUTION: The upper surface 16a of a sealing film 16 is formed at a high position relative to the upper surfaces 20a of electrodes 20 for external connection, and step parts are formed at boundaries between both the members. A buffer layer 31 is formed on the upper surface 16a of the sealing film 16 and on side faces of the step parts with the electrodes 20 for external connection on the sealing film 16. Regions of the buffer layer 31 corresponding to the step parts are formed into inclined surfaces 31b. Solder balls jointed to the upper surfaces of the electrodes 20 for external connection are formed tightly on the inclined surfaces 31b of the buffer layer 31. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor wafer that is hardly warped when curing a sealing film made from liquid resin in the manufacturing of a semiconductor device, side of whose silicon substrate being covered with a side protective film made of resin. SOLUTION: A sealing film 11 made from epoxy resin is coated all aver a semiconductor wafer 21 and cured. Then, the sealing film 11 and the semiconductor wafer 21 at a portion corresponding to a dicing street 22 are subjected to full cut and a groove 25 is formed. Next, dicing tape 23 is pulled and extended in the circumference direction and the groove 25 is widened according to the extension. Next, a side protective film made from room temperature curable resin is formed in the widened groove 25. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To make it hard for a film having a low dielectric constant to be peeled in a semiconductor device having a silicon substrate and a low-dielectric-constant film wiring laminate structure portion comprising a laminate structure of a silicon substrate, and the film having the low dielectric constant and wiring provided on the silicon substrate. SOLUTION: The low-dielectric-constant film wiring laminate structure portion 3 comprising the laminate structure of the film 4 having the low dielectric constant and wiring 5 is provided in a region except a peripheral portion on an upper surface of the silicon substrate 1. A first passivation film 7 is provided on an upper surface of the low-dielectric-constant film wiring laminate structure portion 3. Then the first passivation film 7 and a side surface of the low-dielectric-constant film wiring laminate structure portion 3 are covered with a second passivation film 9. Consequently, the film 4 having the low dielectric constant has a hard-to-peel structure. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor device capable of buffering stress acted between the semiconductor device and a circuit substrate, and a method of manufacturing the semiconductor device.SOLUTION: A semiconductor device 1 comprises a semiconductor substrate 11 having a connection pad 12, a buffer layer 14A provided at a part on the semiconductor substrate 11, an insulation film 14B provided on the semiconductor substrate 11 including the buffer layer 14A and having an opening 14a exposing the connection pad 12, a wiring 15 provided so as to connect to the connection pad 12 and having a land on the insulation film 14B in an area corresponding to the buffer layer 14A, and an external connection electrode 21 provided on the land.