Patent ID: 8772088

Claim:
A method of manufacturing a high frequency module including an electronic component mounted on a component-mounting surface of a unit substrate including a via conductor electrically conducted to a ground electrode, the component-mounting surface is encapsulated with an encapsulation layer made of an insulating material, along with the electronic component, and a conductive shield layer covers the encapsulation layer and is electrically conducted to the via conductor, the method comprising the steps of: preparing a collective substrate including a plurality of unit substrates successively connected in a matrix pattern, each of the plurality of unit substrates including the via conductor electrically conducted to the ground electrode in a peripheral portion thereof; mounting predetermined electronic components on a component-mounting surface of the collective substrate; encapsulating the component-mounting surface of the collective substrate and the electronic components with the encapsulation layer made of the insulating material; cutting the collective substrate including the encapsulation layer disposed thereon from a substrate surface on the side containing the encapsulation layer, thereby forming a half-cut groove penetrating through the encapsulation layer for division thereof and extending partially but not entirely through the collective substrate in a direction of thickness thereof such that the via conductor is exposed only at a bottom surface of the half-cut groove; forming a conductive shield layer to cover the encapsulation layer and being electrically conducted to the via conductor that is exposed at the bottom surface of the half-cut groove; and cutting the collective substrate for division into individual unit substrates each including the via conductor and the conductive shield layer electrically conducted to the ground electrode through the via conductor; wherein the bottom surface of the half-cut groove defined by the lowermost horizontal surface of the half-cut groove.