| abstract |
Examples of the resin composition include an epoxy resin substrate, 2-ethyl-9,10-dimethoxyanthracene, 2,2-dimethoxy-2-phenylacetophenone, 2-ethoxy-2-phenylacetophenone, and phosphine oxide. And a free radical photoinitiator selected from the group consisting of, and a photoacid generator. When the resin composition is cured, it has low or no spontaneous fluorescence when exposed to a blue excitation wavelength in the range of about 380 nm to about 480 nm or a green excitation wavelength in the range of about 510 nm to about 560 nm. |