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CLAIMS
1. An organic EL display device in which an insulating layer formed on a first electrode comprises a cured film produced by curing a photosensitive resin composition, wherein the residual amount of acid anhydrides in the cured film is 0.003 to 0.04 inclusive when the residual amount of aromatic rings in the cured film is taken as 1 (the reference value).
2. An organic EL display device in which an insulating layer formed on a first electrode comprises a cured film produced by curing a photosensitive resin composition, wherein the below-shown index (a) , which indicates the residual amount of acid anhydrides in the cured film, is 0.003 to 0.04 inclusive:
index (a) = (intensity at 1853 cm-1) / (intensity at 1436 cm-1)
(wherein each of the intensities represents an intensity of absorption measured with a Fourier transform infrared spectrometer (FT-IR).
3. The organic EL display device according to claim 2,
wherein the photosensitive resin composition comprises (A) an
alkali-soluble resin having a carboxylic acid structure, (B)
a photosensitizing agent and (C) an organic solvent.

4. The organic EL display device according to claim 3, wherein the alkali-soluble resin having a carboxylic acid structure (A) is an alkali-soluble resin having an aromatic carboxylic acid structure.
5. The organic EL display device according to claim 3 or 4, wherein the alkali-soluble resin having a carboxylic acid structure (A) contained in the photosensitive resin composition is a polyimide precursor.
6. The organic EL display device according to any one of claims 3 to 5, wherein the alkali-soluble resin having a carboxylic acid structure (A) contained in the photosensitive resin composition is a polyimide precursor having an amic acid structure.
7. The organic EL display device according to any one of claims 3 to 6, wherein the alkali-soluble resin having a carboxylic acid structure (A) contained in the photosensitive resin composition has a structure represented by general formula (1) :
[chemical formula 1]

(wherein R1 represents a tetravalent organic group containing an aromatic ring; R2 represents a bivalent to tetravalent organic group containing an aromatic ring; X represents a carboxylic acid which is covalently bonded to an aromatic ring; Y represents a carboxylic acid ester which is covalently bonded to an aromatic ring; and 1 represents an integer of 1 to 2 and m represents an ^integer of 0 to 1, wherein 1 + m is 2) .
8. The organic EL display device according to any one of claims 3 to 7, wherein the photosensitizing agent (B) is (bl) an o-quinone diazide compound and has positive-type photosensitivity.
9. The organic EL display device according to any one of claims 3 to 7, wherein the photosensitizing agent (B) is (b2) a photopolymerization initiator and has negative-type photosensitivity and (E) a radically polymerizable monomer is additionally contained in the photosensitive resin composition.

10. The organic EL display device according to any one of claims 2 to 9, wherein the photosensitive resin composition contains (F) a coloring material.
11. The organic EL display device according to any one of claims 2 to 10, wherein the insulating layer opening ratio in a display area is 20% or less.
12. A method for manufacturing an organic EL display device as recited in any one of claims 2 to 11, in which a bleaching treatment is included in an insulating layer formation step.