Patent ID: 11963294
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A multilayer resin substrate comprising:
a base material including:
a first resin layer including:
a first surface; and
a second surface opposed to the first surface; and

a second resin layer including:
a third surface; and
a fourth surface opposed to the third surface;

a first conductor pattern on the first surface of the first resin layer;
a second conductor pattern between the second surface of the first resin layer and the third surface of the second resin layer;
an interlayer connection conductor in at least the first resin layer;
a first opening portion in the first resin layer; and
a second opening portion in the first resin layer; wherein
the first resin layer and the second resin layer are stacked on each other in a stacking direction;
the base material includes a fifth surface including a concave portion;
the fifth surface includes the first surface and is located on an outermost surface of the base material;
the concave portion includes the first opening portion;
the first opening portion is located on each of the first surface and the second surface;
an area of the first opening portion on the first surface is larger than an area of the first opening portion on the second surface, when viewed in the stacking direction;
the interlayer connection conductor is provided by a metal material in the second opening portion;
the second opening portion is located on each of the first surface and the second surface;
an area of the second opening portion on the first surface is smaller than an area of the second opening portion on the second surface, when viewed in the stacking direction;
the first opening portion includes an end portion on the first surface; and
the end portion is not in contact with the first conductor pattern.