| 摘要 |
PURPOSE:To facilitate the resin sealing process while increasing the material efficiency of lead frame by a method wherein the injection parts of two stage resin sealing parts are formed on a straight line perpendicularly in the long direction of lead frame. CONSTITUTION:Resin sealing parts 2, 3 are obliquely arranged on up and down two stages in the short direction of frame 1 while the resin injection ports 5, 6 are connected to the angular parts of resin sealing parts 2, 3. The resin formed on a straight lines perpendicularly in the long direction of frame 1 passes through the resin injection port 5 to fill the resin sealing part 2 further passes through the other resin injection port 6 to fill the other resin sealing part 3. In such a constitution, the resin injection ports 5, 6 can be formed easily while the resin with excellent fluidity can be filled smoothly without fail to facilitate the resin sealing process for increasing the material efficiency of lead frame.
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