Colored photosensitive resin composition and light shielding spacer prepared therefrom
AssigneeRohm and Haas Electronic Materials Korea Ltd.
InventorsHyung-Tak Jeon, Ji Ung Kim, Kyung-Jae Park, Jong-Ho Na, Hyung Gu Kim
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Abstract
The present invention relates to a colored photosensitive resin composition capable of forming a cured film that does not generate uneven wrinkles on its surface, to thereby minimize spots on the display screen that may be generated by a defect in the gap between the upper and lower plates during their assembly, with the formation of an excellent step difference and a pattern in a high resolution; and to a light shielding spacer produced therefrom and used for a liquid crystal display, an organic EL display, or the like.
Claims13
A colored photosensitive resin composition, which comprises:
- (A) a copolymer comprising an epoxy group;
- (B) a photopolymerizable compound comprising a double bond;
- (C) a photopolymerization initiator;
- and
- (D) a colorant,
- wherein the colorant (D) comprises a black colorant and a colorant other than black,
- the molar ratio of the double bonds in the photopolymerizable compound (B) to the epoxy groups in the copolymer (A) satisfies the following relationship:
- 4≤number of moles of double bonds/number of moles of epoxy groups≤35;
- and
- a cured film formed from the colored photosensitive resin composition has an optical density of 1.0/μm to 3.0/μm.
Dependencies are inferred from the claim text.