发明名称 |
FLIP CHIP UNDERFILL SYSTEM AND METHOD |
摘要 |
A system (30) for dispensing a viscous material onto a substrate (16) which includes a dispensing element (22), a viscous material reservoir (20) and a metering device (25) coupled between the reservoir (20) and the dispensing element (22) for metering a variable amount of a viscous material through the dispensing element (22). The dispensing element (22) and metering device (25) can be moved by a positioner (32) along a predetermined pattern adjacent a surface of a substrate (16). A weigh scale (52) located adjacent the substrate (16) receives a metered amount of the viscous material and produces signals representative of a variable weight of the material dispensed during a predetermined time interval. A controller (40) adjusts a speed of movement of the positioner (32) along the predetermined pattern to cause the dispensing element (22) to dispense a desired amount of material based on a calculated flow rate. Alternatively, the controller (40) adjusts a rate of delivery based on the calculated flow rate. |
申请公布号 |
CA2232973(A1) |
申请公布日期 |
1997.04.17 |
申请号 |
CA19962232973 |
申请日期 |
1996.10.08 |
申请人 |
NORDSON CORPORATION |
发明人 |
LEWIS, ALAN R.;MEIER, MARK S.;BABIARZ, ALEC J.;GAMELIN, ANDRE S.;LA, DUONG T.;BOURAS, CARLOS E. |
分类号 |
B05D1/26;B05C5/00;B05C5/02;B05C11/10;B05D7/00;B67D7/08;B67D7/18;B67D7/82;H01L21/56;H05K1/18;(IPC1-7):H01L23/28 |
主分类号 |
B05D1/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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