摘要:
The method of manufacturing a semiconductor device of the present invention includes steps of; a resin layer forming process in which a face with electrodes of a semiconductor wafer having a plurality of semiconductor elements formed thereon is coated with a resin layer which has a function of sealing it; and a wafer thinning process in which the back face of the semiconductor wafer is ground. The method of manufacturing the semiconductor device of the present invention further includes a process of forming a conductive section on the electrodes of the semiconductor wafer with a plurality of semiconductor elements in such a manner the conductive section reaches to the electrodes. The manufacturing method of the semiconductor device of the present invention still further includes a process of cutting the semiconductor wafer having a plurality of semiconductor elements along boundaries of each semiconductor element. In the thinning process, at least one of a mechanical grinding method, a chemical etching method and a plasma etching method are employed.
摘要:
A circuit pattern 2a, made of copper foil, is arranged on a substrate 1. A nickel-containing barrier metal layer 2b is formed on the circuit pattern 2a. A gold layer 2c is formed on the barrier metal layer 2b by electroless substitution plating. Then, substrate 1 is heated up to impel nickel contained in the gold layer 2c to move toward a surface zone of the gold layer 2c to deposit nickel compound in the surface zone of the gold layer 2c, thereby enhancing the fineness of a remaining part of the gold layer 2c at at least an inside zone immediately below the surface zone. Then, the surface zone containing the crowded nickel compound is removed off the gold layer 2c so as to expose a purified surface of the inside zone of the gold layer 2c. Therefore, it becomes possible to form an excellent electrode having satisfactory bondability to the wire by using a less amount of gold at low costs.
摘要:
In a bump forming method and its forming apparatus, a torch is made to approach a bottom end of a wire extended from a capillary tool to form a ball, thereafter the wire is held by first clampers to lower the capillary tool, and the ball is inserted into the bottom end of the central hole of the capillary tool. Then, the wire is held by the first clampers so that it does not lower and cut by lowering of the capillary tool. Moreover, the capillary tool is further lowered and the ball is pressed against the electrode of a workpiece to bond the ball to the electrode to form a bump. A tail protruded from the bump is crushed by pressing a pressing jig against the tail to make the height of the bump uniform. Thereby, the ball is firmly bonded to the electrode and the joint surface between the ball and the electrode is not damaged.
摘要:
There are disclosed a surface treatment apparatus and a wire bonding apparatus which are compact in size, have a high processing ability, are simple in construction, and achieve a low cost The surface treatment apparatus includes a base having a transfer path for transferring an object, a lid provided above the base for movement into and out of contact with an upper surface of the base, the lid contacting the base to form a sealed space on the upper surface of the base, an engagement and disengagement mechanism for moving the lid into and out of contact with the base, a transfer mechanism for feeding the object, disposed on the transfer path, into and out of a position beneath the lid when the lid is out of contact with the base, and a treatment portion for surface treating electrodes of the object disposed in the sealed space A wire bonding mechanism is provided at a downstream portion of the transfer path.
摘要:
Nickel films 22, 25 are formed on copper pads 21, 24 on a substrate 11, and gold layers 23, 26 are further formed on the nickel films 22, 25. To suppress formation of compound of gold and tin which spoils reliability of soldering, formation of gold layers 23, 26 on the nickel films 22, 25 is effected by very thin substitutional plating method. As a result, a solder bump 17 is formed favorably. Besides, an nickel oxide film 32 formed on the surface of the gold layer 23 is removed by plasma etching. As a result, bonding of wire 15 is also excellent.
摘要:
A circuit pattern 2a, made of copper foil, is arranged on a substrate 1. A nickel-containing barrier metal layer 2b is formed on the.circuit pattern 2a. A gold layer 2c is formed on the barrier metal layer 2b by electroless substitution plating. Then, substrate 1 is heated up to impel nickel contained in the gold layer 2c to move toward a surface zone of the gold layer 2c to deposit nickel compound in the surface zone of the gold layer 2c, thereby enhancing the fineness of a remaining part of the gold layer 2c at at least an inside zone immediately below the surface zone. Then, the surface zone containing the crowded nickel compound is removed off the gold layer 2c so as to expose a purified surface of the inside zone of the gold layer 2c. Therefore, it becomes possible to form an excellent electrode having satisfactory bondability to the wire by using a less amount of gold at low costs.
摘要:
The wire bonding method of the present invention comprises a step of removing a thin surface layer of an electrode comprising a copper layer and a nickel layer formed on the surface of the copper layer and coated with gold on the surface, to thereby remove nickel hydroxide and nickel oxide present on the gold film and a step of electrically connecting a pad of a semiconductor chip fixed with a bonding agent on the substrate through an electrically conductive wire to the nickel hydroxide nickel oxide-eliminated electrode.
摘要:
A plasma processing apparatus includes a vacuum chamber, a plasma processing execution portion, a discharge state detecting unit, a window portion, a camera, a first storing portion, a second storing portion and an image data extracting unit. When an abnormal discharge is detected, the image data extracting unit extracts at least moving image data showing a generation state of the abnormal discharge from the first storing portion and stores the extracted moving image data in the second storing portion. When plasma processing is ended without the detection of the abnormal discharge, the image data extracting unit extracts, from the first storing portion, moving image data of a predetermined specific period or still image data of a specific period derived from the moving image data of the first storing portion and stores the extracted moving image data or the extracted still image data in the second storing portion.
摘要:
In the pickup apparatus wherein a chip adhered on a sheet is sucked and held by a picking nozzle and then picked up by the nozzle, a sheet push-up member configured by forming flexible elastic material such as rubber in a spherical shape is attached on the abutment supporting surface of the upper surface of a tool, then the push-up surface of the sheet push-up member is followed in a flat surface state along the lower surface of the sheet and abutted thereto in the moving down state of the picking nozzle, and then the push-up surface pushes up the lower surface of the sheet while being deformed in a upwardly protruded curved surface shape in the moving up operation where the picking nozzle moves up together with the chip. Thus, the chip can be released from the sheet from the outer peripheral side of the chip.
摘要:
To provide a substrate processing method and a semiconductor chip manufacturing method that enable low-cost formation of a mask for etching using plasma etching. During formation of a mask used in plasma dicing for separating a semiconductor wafer 1 into discrete semiconductor chips 1e by means of etching using plasma processing, there is adopted a method including printing a lyophobic liquid in an area on a rear surface 1b that is to be an objective of etching, thereby forming a lyophobic pattern made up of lyophobic films 3; supplying a low viscosity resin 4a and a high viscosity resin 4b, in this sequence, to the rear surface 1b on which the lyophobic pattern is formed, thereby forming a resin film 4 that is thicker than the lyophobic films 3 in an area where the lyophobic films 3 are not present; and curing the resin film 4, to thus form a mask 4* that covers an area except for the area to be etched. Thus, a mask for etching purpose can be formed at low cost without use of a high-cost method, like photolithography.