| abstract |
The invention discloses a hexaarylbisimidazole photoinitiator, wherein the molar proportion of red-shifted substituents in all its substitutable sites is 6-16%. When applied to the photosensitive resin composition, the photoinitiator has moderate sensitivity, good solubility, excellent resolution and developability, does not appear inverted trapezoid during development, and has good hydrophilicity, which can significantly reduce recycling. The amount of sludge in the developer at the same time, so that the developer can be used repeatedly and effectively. The present invention also provides a photosensitive resin composition comprising the above-mentioned photoinitiator, and an application of the composition. |