Patent ID: 11952487
Assignee: SU ZHOU DREAM TECHNOLOGY CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  H | IPC C  H

Claim 5:
6. A method of preparing a resin spacer for chip stacking and packaging, characterized in comprising the following steps:
S1: mixing: adding 8-40 parts by weight of epoxy resin, 10-30 parts by weight of quartz powder, 2-10 parts by weight of aluminum oxide, and 1-8 parts by weight of calcium oxide into a solvent to obtain a first mixture, stirring to dissolve the first mixture, adding 1-8 parts by weight of curing agent to obtain a second mixture, and dispersing the second mixture uniformly to obtain a resin gelatinous solution;
S2: impregnating: impregnating 10-60 parts by weight of fiber glass fabric into the resin gelatinous solution to obtain an impregnated fabric, and controlling an impregnating amount to be 50-700 g/m2;
S3: partially curing: drying the impregnated fabric and controlling the pre-curing degree at 30-50% to obtain a prepreg;
S4: stacking and pressing: laminating a plurality of prepregs, then heating and pressing them simultaneously, stopping the heating after a period of heat preservation, and obtaining the resin spacer with a thickness after cooling.