JPS6441251A - Manufacture of lead frame - Google Patents
Manufacture of lead frameInfo
- Publication number
- JPS6441251A JPS6441251A JP19631587A JP19631587A JPS6441251A JP S6441251 A JPS6441251 A JP S6441251A JP 19631587 A JP19631587 A JP 19631587A JP 19631587 A JP19631587 A JP 19631587A JP S6441251 A JPS6441251 A JP S6441251A
- Authority
- JP
- Japan
- Prior art keywords
- prism
- resist layer
- lead
- mask
- manufacture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Lead Frames For Integrated Circuits (AREA)
Abstract
PURPOSE:To decrease the defective percentage of products, by sticking a mask on the bottom surface of a prism, performing alignment and exposure via the prism, and attaching accurately a bump to a lead. CONSTITUTION:A prism apparatus 20 is mounted on a resist layer 15. A light beam for position recognition is emitted from a light emitting part 23. While the light is reflected by a prism 21 to illuminate a mask 22 surface, the apparatus 20 is slightly moved to the front and the rear and the right and the left to align the position of the mask 22. By emitting a light beam for resist-setting from the light emitting part 23, a set part and a non-set part are formed on the resist layer 15. By eliminating the non-set part, the set resist layer 15 only is left. Electroforming of a lead is performed on the eliminated part of the resist layer 15. Thereby, a bump is accurately attached to the lead, and the defective percentage of products can be decreased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62196315A JP2525824B2 (en) | 1987-08-07 | 1987-08-07 | Method for manufacturing lead frame |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62196315A JP2525824B2 (en) | 1987-08-07 | 1987-08-07 | Method for manufacturing lead frame |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6441251A true JPS6441251A (en) | 1989-02-13 |
JP2525824B2 JP2525824B2 (en) | 1996-08-21 |
Family
ID=16355768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62196315A Expired - Lifetime JP2525824B2 (en) | 1987-08-07 | 1987-08-07 | Method for manufacturing lead frame |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2525824B2 (en) |
-
1987
- 1987-08-07 JP JP62196315A patent/JP2525824B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2525824B2 (en) | 1996-08-21 |
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