| 摘要 |
PURPOSE:To fill all the corners of the cavity with die cleaning resin and to enable die cleaning without failure by providing a large cut area including a cavity area where a die is filled with die cleaning resin and an air vent to escape air within the cavity area. CONSTITUTION:A die cleaning lead frame 10 is made larger than the outline of cavity areas 3 and 11 and cut off to near a pressure escape section 5. Die cleaning resin spreads in the entire region where the lead frame is cut including the air vent 4 to eliminate thin resin entered the air vent 4 together with cavity areas 3 and 11. Since the die cleaning lead frame 10 is cut off so that die cleaning resin can flow in the range of length L including the range of the cavity area and the air vent 4, thin die cleaning resin in the range of the air vent 4 flows in the thickness added the thickness of the die cleaning lead frame 10. Therefore, when eliminating die cleaning resin, die cleaning resin entered the air vent 4 can be eliminated together with the cavity area. |
