Wiring circuit board

A wiring circuit board comprising:

• a metal supporting substrate, an insulating layer, and a conductive layer in this order toward one side in a thickness direction, wherein
• the conductive layer includes at least one terminal portion and a wiring portion extending from the terminal portion;
• the metal supporting substrate has an opening portion that penetrates the metal supporting substrate in the thickness direction and faces the terminal portion through the insulating layer;
• and
• the opening portion has a first opening peripheral edge on one side in the thickness direction and a second opening peripheral edge on the other side in the thickness direction;
• wherein in a projected view in the thickness direction, the second opening peripheral edge is disposed outside the first opening peripheral edge and extends along the first opening peripheral edge,
• wherein, in the projected view, the entire first opening peripheral edge is disposed inside the terminal portion, and
• wherein, in the projected view, the entire second opening peripheral edge is disposed outside the terminal portion.

A wiring circuit board comprising:

• a metal supporting substrate, an insulating layer, and a conductive layer in this order toward one side in a thickness direction, wherein
• the conductive layer includes at least one terminal portion and a wiring portion extending from the terminal portion;
• the metal supporting substrate has an opening portion that penetrates the metal supporting substrate in the thickness direction and faces the terminal portion through the insulating layer;
• and
• the opening portion has a first opening peripheral edge on one side in the thickness direction and a second opening peripheral edge on the other side in the thickness direction;
• wherein in a projected view in the thickness direction, the second opening peripheral edge is disposed outside the first opening peripheral edge and extends along the first opening peripheral edge, and
• wherein the first opening peripheral edge includes a first portion disposed inside the terminal portion in the projected view, and a second portion disposed outside the terminal portion in the projected view.

A wiring circuit board comprising:

• a metal supporting substrate, an insulating layer, and a conductive layer in this order toward one side in a thickness direction, wherein
• the conductive layer includes at least one terminal portion and a wiring portion extending from the terminal portion;
• the metal supporting substrate has an opening portion that penetrates the metal supporting substrate in the thickness direction and faces the terminal portion through the insulating layer;
• and
• the opening portion has a first opening peripheral edge on one side in the thickness direction and a second opening peripheral edge on the other side in the thickness direction;
• wherein in a projected view in the thickness direction, the second opening peripheral edge is disposed outside the first opening peripheral edge and extends along the first opening peripheral edge;
• and
• wherein the opening portion has a curved wall surface disposed between the first opening peripheral edge and the second opening peripheral edge and curving so as to bulge outwardly.

A wiring circuit board comprising:

• a metal supporting substrate, an insulating layer, and a conductive layer in this order toward one side in a thickness direction, wherein
• the conductive layer includes at least one terminal portion and a wiring portion extending from the terminal portion;
• the metal supporting substrate has an opening portion that penetrates the metal supporting substrate in the thickness direction and faces the terminal portion through the insulating layer;
• and
• the opening portion has a first opening peripheral edge on one side in the thickness direction and a second opening peripheral edge on the other side in the thickness direction;
• wherein in a projected view in the thickness direction, the second opening peripheral edge is disposed outside the first opening peripheral edge and extends along the first opening peripheral edge;
• wherein in the projected view, at least a part of the first opening peripheral edge is disposed inside the terminal portion, and at least a part of the second opening peripheral edge is disposed outside the terminal portion;
• and
• wherein the terminal portion includes a first conductive layer on the insulating layer side, and a second conductive layer on the first conductive layer.

A wiring circuit board comprising:

• a metal supporting substrate, an insulating layer, and a conductive layer in this order toward one side in a thickness direction, wherein
• the conductive layer includes at least one terminal portion and a wiring portion extending from the terminal portion;
• the metal supporting substrate has an opening portion that penetrates the metal supporting substrate in the thickness direction and faces the terminal portion through the insulating layer;
• the insulating layer is disposed between the opening portion and the terminal portion, and covers the entire opening portion;
• and
• the opening portion has a first opening peripheral edge on one side in the thickness direction and a second opening peripheral edge on the other side in the thickness direction;
• and
• wherein in a projected view in the thickness direction, the second opening peripheral edge is disposed outside the first opening peripheral edge and extends along the first opening peripheral edge.