Environmentally stable optical filter materials

Details Environmentally stable optical filter materials Environmentally stable optical filter materials

1998-03-17

1999-12-07

Hampton-Hightower, P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528170, 528322, 528327, 528350, 528352, 528353, 430272, 430283, 430286, 430326, 438 3, 438 7, C08G 7300, G03C 1492, G03C 1725

Patent

active

059985690

ABSTRACT:
A composition of matter comprising a polyamic acid/ester having an amide pendant group directly substituting an acid site of the polyamic acid is provided, which composition when cured provides a colored polymer film when the amide group is a chromophore. The resulting polymer which may be applied as a film to semiconductor chips to provide an optically sensitive semiconductor chip comprises a partially imidized polyamic acid wherein an amide pendant group is directly attached to one acid moiety of the polyamic acid and the other acid group imidized with the adjacent amino group of the polyamic acid. The polymers are useful as optical filters on semiconductor chips and for photoresist applications.

REFERENCES:
patent: 4054906 (1977-10-01), Yamanaka
patent: 4059839 (1977-11-01), Yamanaka et al.
patent: 4126466 (1978-11-01), Roos
patent: 4268601 (1981-05-01), Namiki et al.
patent: 4465767 (1984-08-01), Oba et al.
patent: 4495516 (1985-01-01), Moore et al.
patent: 4663656 (1987-05-01), Elabd et al.
patent: 4782009 (1988-11-01), Bolon et al.
patent: 4910122 (1990-03-01), Arnold et al.
patent: 4985758 (1991-01-01), Hashimoto
patent: 5159037 (1992-10-01), Clement et al.
patent: 5159038 (1992-10-01), Babb et al.
patent: 5162468 (1992-11-01), Babb et al.
patent: 5182040 (1993-01-01), Bartlett et al.
patent: 5210265 (1993-05-01), Clement et al.
patent: 5310625 (1994-05-01), Angelopoulos et al.
patent: 5338826 (1994-08-01), St. Clair et al.
patent: 5359092 (1994-10-01), Hay et al.
"New Memory Systems Constructed with Polyimide LB Films Having Azobenzene Pendant Groups: Behavior of In-Plane Anisotropic Photoisomerization, Photoinduced Optical Anisotropy, and Anisotropic Photofading", S. Yokoyama, M. Kakimoto, Y. Imai, Mol. Cryst. Liq. Cryst. 1993 vol. 227, pp. 295-307.
"Photochemically Inducible and Erasable Dichroism by Molecular Reorientation of an Azobenzene Pendant Unit in a Polyimide Langmuir-Blodgett Film", S. Yokoyama, M. Kakimoto, Y. Imai, Langmuir, 1994 vol. 10, No. 12, pp. 4594-4598.
"Various Orientations of Pendant Dye Attached to Polyamic Acid Langmuir and Langmuir-Blodgett Films Studied by an Optical Second-Harmonic Generation Interferometry Technique", T. Tamada, et al., Thin Solid Films, 244 (1994) pp. 754-757.
"Displacement Current Generation Across Single Monolayers of Polyamic Acids Having Pendant Groups at the Air-Water Interface", H. Naruse, et al., Thin Solid Films, 242 (1994) pp. 220-222.
"Novel Synthesis of Polymide with Pendant 1-Phenylethyl Ester Using DBU and its Thermal Acid-Catalyzed Deesterification", T. Iizawa, T. Ogasa, Journal of Polymer Science: Part A: Polymer Chemistry, vol. 34 (1996) pp. 63-71.
"Surface Structure and Orientation of Polyamic Acid Alkylamine Salt Langmuir-Blodgett Films Having an Azobenzene Pendant Unit", S. Yokoyama, et al., Thin Solid Films, 273 (1996) pp. 254-257.
"Photochemical Memory System in Polyimide Langmuir-Blodgett Film with Azobenzene Pendant Group", S. Yokoyama, M. Kakimoto, Y. Imai, Thin Solid Films, 242 (1994) pp. 183-186.

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