摘要:
A method (38) for packaging a microelectronic device (10) and a device (10) packaged by the method (38). The method (38) includes a step of providing (42) a first material (16) on an active surface of the microelectronic device (10). The first material (16) has a first temperature coefficient of expansion. The method (38) also includes steps of heating (46) the microelectronic device (10) and the first material (16) to a predetermined first temperature and molding (48) a second material (20) about the microelectronic device (10) and the first material (16). The second material (20) has a second temperature coefficient of expansion less than that of the first material (16). A final step of cooling (50) the first material (16), the second material (20) and the microelectronic device (10) provides a packaged microelectronic device (30).
摘要:
A method for packaging an acoustic wave filter (102). The method includes a step of providing a first wafer (100). The first wafer (100) supports acoustic wave transduction and propagation. The method also includes steps of processing the wafer (100) to provide transducer patterns (18, 18') thereon and disposing a seal ring (25) on the wafer (100). The seal ring (25) completely encloses active areas allowing portions of each bond pad to extend outside of the seal ring. The method further includes steps of disposing a second wafer (40) atop the seal ring (25) and the first wafer (100), sealing the second wafer (40) to the first wafer (100), dicing the second wafer (40) with a saw that provides a first kerf width, whereby portions of the second wafer (40) overlying bonding pads (20) of the transducer patterns (18, 18') are removed and dicing the first wafer (100) with a saw that provides a second kerf width narrower than the first kerf width to provide a packaged SAW die.
摘要:
A method for packaging an acoustic wave filter die, and an acoustic wave filter die packaged by the method. The method includes steps of providing an acoustic wave filter die having an active area disposed on a first surface thereof, providing a leadframe including a die flag and sealing the first surface to the die flag. The method also includes steps of molding a plastic package body about the die and the die flag and singulating the plastic body, the die and the die flag. The molding step desirably includes substeps of placing the acoustic wave filter die sealed to the leadframe in a mold, applying a thermosetting plastic material at a suitable temperature less than the glass transition temperature and at a suitable pressure to the acoustic wave filter die sealed to the leadframe in the mold and maintaining the suitable temperature for a suitable period of time.
摘要:
A method (38) for packaging a microelectronic device (10) and a device (10) packaged by the method (38). The method (38) includes a step of providing (42) a first material (16) on an active surface of the microelectronic device (10). The first material (16) has a first temperature coefficient of expansion. The method (38) also includes steps of heating (46) the microelectronic device (10) and the first material (16) to a predetermined first temperature and molding (48) a second material (20) about the microelectronic device (10) and the first material (16). The second material (20) has a second temperature coefficient of expansion less than that of the first material (16). A final step of cooling (50) the first material (16), the second material (20) and the microelectronic device (10) provides a packaged microelectronic device (30).