Abstract: Provided is a negative photoresist used for a semiconductor encapsulation process, belonging to the technical field of semiconductor processing. A negative photoresist formulation includes 40-65 wt % of modified epoxy acrylate, 3-6 wt % of photosensitizer, 100-1000 ppm of leveling agent, and the remainder of solvent; the leveling agent is a solution of a 7:3 mass ratio of polydimethylsiloxane copolymer having a molecular weight of 3000-6000 and propylene glycol monomethyl ether acetate. If the negative photoresist is coated at a thickness of about 50 um, the coating uniformity can be controlled to below 5%, ensuring the quality of exposure such that the thickness of electroplated copper meets requirements.

Abstract: Provided is a negative photoresist used for a semiconductor encapsulation process, belonging to the technical field of semiconductor processing. A negative photoresist formulation includes 40-65 wt % of modified epoxy acrylate, 3-6 wt % of photosensitizer, 100-1000 ppm of leveling agent, and the remainder of solvent; the leveling agent is a solution of a 7:3 mass ratio of polydimethylsiloxane copolymer having a molecular weight of 3000-6000 and propylene glycol monomethyl ether acetate. If the negative photoresist is coated at a thickness of about 50 um, the coating uniformity can be controlled to below 5%, ensuring the quality of exposure such that the thickness of electroplated copper meets requirements.

Abstract: The present invention discloses use of borrelidin for preventing and controlling phytophthora root rot of soybean. The present invention also discloses formulations of borrelidin seed coating agents and wettable powders and preparation methods thereof. Borrelidin exhibits significant effects on Phytophthora sojae. As compared with the conventional fungicide metalaxyl which is used for preventing and controlling phytophthora root rot of soybean, the mycelial growth inhibition assay indicates that the IC50 and IC95 values of borrelidin are 1/62 and 1/263, respectively, of those of metalaxyl. In the indoor pot-culture experiment, the seed coating agent and wettable powder exhibit significant controlling effects on phytophthora root rot of soybean.