Abstract: Prior to sticking of a die bonding sheet comprising a release sheet and a base provided with heat-sensitive adhesive layer to a back surface of wafer, there is performed not only cutting only the base provided with heat-sensitive adhesive layer of the die bonding sheet in conformity with an outline of the wafer, but also cutting the base provided with heat-sensitive adhesive layer in the direction of a width of the die bonding sheet with a spacing of given distance from a rear end portion of the wafer in the direction of carry of the wafer so as to form a leaf portion. Thereafter, only the leaf portion corresponding to portion outside the outline of the wafer is detached.

Abstract: A protecting sheet applied to a wafer is removed by using an adhesive tape with a prescribed length, by bonding the adhesive tape to an edge portion of the protecting sheet and then pulling the adhesive tape. During pulling, a guide roller is held in contact with the protecting sheet and, while the guide roller is held in a fixed position, a peeling head portion and a table are moved in the opposite direction with each other to thereby remove the protecting sheet.

Abstract: A wafer transfer apparatus for sticking a wafer, which is divided into a multiplicity of chips and which has its surface stuck with a protective tape, to a ring frame by a transfer tape, includes: a positioning unit capable of disposing the protective tape stuck wafer on a positioning table and capable of performing a position adjustment of the wafer in longitudinal, lateral and rotational directions, so that the wafer is located in a reference position; a transfer tape mount unit capable of disposing the protective tape stuck wafer, which has been located in the reference position by the positioning unit, on a transfer tape mount table, and capable of sticking a transfer tape to both a ring frame disposed round periphery of the wafer and back of the wafer, so that the wafer and the ring frame are stuck to each other and integrated; and a protective tape peeling unit capable of disposing the wafer, which has its back covered with the transfer tape and which has been integrated with the ring frame by the trans

Abstract: A method of die bonding electronic components. A wafer is mounted on a dicing tape (17) comprising at least one layer of shrink film and a pressure sensitive adhesive layer so that the wafer is stuck thereto by the pressure sensitive adhesive layer. The wafer is then diced so that the wafer is cut apart into a multiplicity of chips (16). The dicing tape (17) having the multiplicity of chips stuck thereto is placed on a table equipped with heating means. This is followed by shrinking the shrink film forming part of the dicing tape by the heating means (3, 7) so that an area of adhesion and adhesive strength between the chips and the adhesive layer are decreased and so that the chips are arranged with predetermined spacings. The final step is suctioning the chips (16) arranged with predetermined spacings one at a time by a suction collet (19) disposed above the chips so that the chips are separated from each other. This method enables effective die bonding without damaging the chips.

Abstract: In an apparatus and method of using an adhesive tape to remove a protecting sheet applied to a semiconductor wafer, a heat-sensitive adhesive tape is thermocompressively bonded by a heat tool to an edge portion of the protecting sheet, after which a cutting blade cuts the adhesive sheet to a prescribed length, and then a tape peeling head grasps the cut adhesive tape and moves in a direction to pull the adhesive tape so as to remove the protecting sheet of the semiconductor wafer, with the removed sheet then being disposed of together with the adhesive tape into a disposal box.

Abstract: The adhesive sheet is a three-layered construction formed from a base material, a plyimide base resin adhesive and a release film, and is outputted from a sheet output control portion. A plate-shaped material comprised of semiconductor wafer is placed on a bonding table, and the wafer is heated by a heater unit. The bonding table is moved to the upper position, then a press roller is moved to press the adhesive sheet onto the heated wafer so as to bond the adhesive sheet to the wafer. At such time, another press roller presses the adhesive sheet. Then, a cutting unit is lowered to cut away any excess adhesive sheet material from the outer periphery of the wafer. Then, such excess adhesive sheet material is wound up in a sheet wind-up portion. In the next step, the rear surface of the wafer is stuck to a dicing tape, and then each chip is cut out. After this is done, each chip is picked up from the dicing tape and die bonded to a lead frame via the adhesive sheet.