Patent ID: 11882681
Assignee: WEIFANG GOERTEK MICROELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A manufacturing method of an electromagnetic shielding structure, comprising:
covering an injection mold on a circuit substrate having a plurality of circuit units, so that each of the plurality of circuit units on the circuit substrate are accommodated in a respective one of a plurality of injection molding cavities of the injection mold;
injecting a non-conductive plastic sealant into the plurality of injection molding cavities to form a plurality of non-conductive plastic sealing bodies on the circuit units, wherein spacing grooves are formed between each of the plurality of non-conductive plastic sealing bodies; and
forming a conductive shielding layer on the plurality of non-conductive plastic sealing bodies, so that the conductive shielding layer covers the plurality of non-conductive plastic sealing bodies and fills the plurality of spacing grooves to form plurality of shielding barrier walls, thereby shielding between neighboring circuit units of the plurality of circuit units in respective cavities,
wherein the forming the conductive shielding layer on the plurality of non-conductive plastic sealing bodies comprises:
filling a compression mold with a conductive plastic sealant;
pressing the circuit substrate into the compression mold, so that the conductive plastic sealant fills the plurality of spacing grooves and covers the plurality of non-conductive plastic sealing bodies; and
solidifying the conductive plastic sealant to form the conductive shielding layer.