Claims
- 1. A bi-layer lift-off structure comprising:
- a release layer disposed on a substrate, said release layer of a material comprising a solution of polydimethylglutarimide and a predetermined amount of an azo dye added to said polydimethylglutarimide, said azo dye promoting adhesion between said polydimethylglutarimide release layer and said substrate, and a top imaging layer of photoresist material disposed on said release layer.
- 2. The structure of claim 1 wherein said predetermined amount being an amount required to form a solution wherein said azo dye comprises 0.25 to 1.0 percent by weight of said PMGI.
- 3. The structure of claim 1 wherein said azo dye comprises Sudan Orange G.
- 4. The structure of claim 1 wherein said polydimethylglutarimide has a weight average molecular weight within the range of approximately 10,000 to 40,000.
- 5. The structure of claim 4 wherein said polydimethylglutatimide has a weight average molecular weight of approximately 20,000.
- 6. The structure of claim 1 wherein said polydimethylglutarimide has a glass transition temperature within the range of approximately 140.degree. to 250.degree. degrees C.
- 7. The structure of claim 6 wherein said polydimethylglutarimide has a glass transition temperature of approximately 185.degree. degrees C.
Parent Case Info
This is a divisional of application of application Ser. No. 08/180,588 filed on Jan. 12, 1994, now abandoned in the name of M. T. Krounbi, A. F. Renaldo and D. J. Werner.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4814258 |
Tam |
Mar 1989 |
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Foreign Referenced Citations (1)
Number |
Date |
Country |
0341843 |
Nov 1989 |
EPX |
Divisions (1)
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Number |
Date |
Country |
Parent |
180588 |
Jan 1994 |
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