Patent ID: 11886115
Assignee: YANTAI SUNERA LLC
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 3:
4. The positive photosensitive resin composition according to claim 1, wherein the tetracarboxylic acid residuerepresented by X in the formula (1) is derived from a combination of one or more of the following dianhydride monomers: pyromellitic dianhydride, 3,3′,4,4′-biphenyltetracarboxylic dianhydride, 3,3′,4,4′-diphenylether tetracarboxylic dianhydride, 3,3′,4,4′-diphenylsulfone tetracarboxylic dianhydride, 3,3′,4,4′-benzophenone tetracarboxylic dianhydride, 2,2-bis(3,4-dicarboxyphenyl) hexafluoroisopropylidene dianhydride, 1,2,3,4-cyclobutane tetracarboxylic dianhydride, 1,2-dimethyl-1,2,3,4-cyclobutane tetracarboxylic dianhydride, 1,2,3,4-tetramethyl-1,2,4-tetramethyl-1,2,4-tetramethyl-1,2,4-tetracarboxylic dianhydride 3,4-cyclobutane tetracarboxylic dianhydride 1,2,3,4-cyclopentane tetracarboxylic dianhydride, 1,2,4,5-cyclohexane tetracarboxylic dianhydride, 3,4-dicarboxy-1,2,3,4-tetrahydroxy- 1-naphthalenesuccinic dianhydride, 5-(2,5-dioxothetrahydrofuranyl)-3-methyl-3-cyclohexene-1,2-dicarboxylic dianhydride, 2,3,5-tricarboxy-2-cyclopentane acetic dianhydride, bicyclic[2.2.2]oct-7-en-2,3,5,6-tetracarboxylic dianhydride, 2,3,4,5-tetrahydrofuran tetracarboxylic dianhydride and 3,5,6-tricarboxyl-2-norbornene acetic dianhydride.