The present disclosure provides a partition wall for an image display device, the partition wall which satisfies 0.8≤A/B<1.0 and 0.85≤C/B<1.0 when the line width at a thickness of 95% from the lowermost end portion of the partition wall is A, the maximum line width at a thickness of 50 to 90% from the lowermost end portion of the partition wall is B, and the line width at a thickness of 10% from the lowermost end portion of the partition wall is C, with respect to the total thickness of the partition wall, a manufacturing method thereof, and an image display device including the partition wall. The partition wall for an image display device according to the present disclosure can be effectively applied to the manufacture of the color conversion pixels through the inkjet process, and the image display device including the partition wall has excellent luminance and maintains high luminance even when observed from the side surface, thereby exhibiting an effect of excellent viewing angle properties.

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