Electronic component module and radio comunications equipment
View Patent ↗An IC element 2 having an oscillation circuit and an amplification circuit is mounted on a wiring board 1 , the IC element 2 is covered with a sealing resin layer 4 having a window 4 a on an upper surface of the IC element 2 , and a shielding layer 5 is made to adhere to the sealing resin layer 4 and the window 4 a from above. In a simple configuration, the entrance of electromagnetic waves into the IC element 2 is reduced, which allows a transmission signal from the IC element 2 to be stabilized.
1. An electronic component module comprising:
a wiring board;
an IC element on the wiring board;
a sealing resin layer covering the IC element, excluding a part of a surface, on the opposite side of the wiring board, of the IC element;
a shielding layer, wherein the shielding layer adheres to the sealing resin layer and a portion, which is not covered with the sealing resin layer, of the IC element, wherein the portion comprises the center of the IC element,
wherein the shielding layer comprises one or more metal powders or a metal film,
a filter element comprising an LC resonance circuit in the wiring board, and
a shielding conductor pattern in the wiring board positioned between the filter element and the IC element,
wherein the outer periphery of the shielding layer has an extension extended to a portion below the upper surface of the wiring board along the side surface of the sealing resin layer, and a lower end of the extension is arranged at a height position equal to or less than the shielding conductor pattern.
2. A radio communication equipment comprising the electronic component module according to claim 1 , and an antenna and a transmitting/receiving circuit that are connected to the electronic component module.
3. The electronic component module according to claim 1 , wherein the shielding layer further comprises resin, and the one or more metal powders are dispersed in the resin.
4. The electronic component module according to claim 1 , if wherein the shielding layer covers the filter element.