Resin substrate and method for manufacturing resin substrate

A resin substrate comprising:

• an insulating base material including a first main surface and a second main surface at least one of which is parallel or substantially parallel to each of an X-axis direction and a Y-axis direction in an X-Y-Z orthogonal coordinate system, the first main surface and the second main surface opposing each other;
• wherein
• the insulating base material is divided into a first section and a second section each of which is arranged in the X-axis direction;
• the first section includes, when evenly divided into three in a Z-axis direction, a first region closest to the first main surface, a second region closest to the second main surface, and a third region between the first region and the second region;
• and
• a degree of resin molecular orientation in the second region in the X-axis direction is greater than a degree of resin molecular orientation in the second section of the insulating base material in in the X-axis direction.

A resin substrate comprising:

• an insulating base material including a first main surface and a second main surface at least one of which is parallel or substantially parallel to each of an X-axis direction and a Y-axis direction in an X-Y-Z orthogonal coordinate system, the first main surface and the second main surface opposing each other;
• wherein
• the insulating base material is divided into a first section and a second section each of which is arranged in the X-axis direction;
• the first section includes, when evenly divided into three in a Z-axis direction, a first region closest to the first main surface, a second region closest to the second main surface, and a third region between the first region and the second region;
• a Young's modulus in the first region in the Y-axis direction is greater than a Young's modulus in the second section in the Y-axis direction;
• and
• a Young's modulus in the first region in the X-axis direction is smaller than a Young's modulus in the second section in the X-axis direction.

A resin substrate comprising:

• an insulating base material including a first main surface and a second main surface at least one of which is parallel or substantially parallel to each of an X-axis direction and a Y-axis direction in an X-Y-Z orthogonal coordinate system, the first main surface and the second main surface opposing each other;
• wherein
• the insulating base material is divided into a first section and a second section each of which is arranged in the X-axis direction;
• the first section includes, when evenly divided into three in a Z-axis direction, a first region closest to the first main surface, a second region positioned to the second main surface, and a third region between the first region and the second region;
• a Young's modulus in the second region in the X-axis direction is greater than a Young's modulus in the second section in the X-axis direction;
• and
• a Young's modulus in the second region in the Y-axis direction is smaller than a Young's modulus in the second section in the Y-axis direction.

A resin substrate comprising:

• an insulating base material including a first main surface and a second main surface at least one of which is parallel or substantially parallel to each of an X-axis direction and a Y-axis direction in an X-Y-Z orthogonal coordinate system, the first main surface and the second main surface opposing each other;
• wherein
• the insulating base material is divided into a first section, a second section, and a third section each of which is arranged in the X-axis direction;
• the first section includes, when evenly divided into three in a Z-axis direction, a first region closest to the first main surface, a second region closest to the second main surface, and a third region between the first region and the second region;
• the third section includes, when evenly divided into three in the Z-axis direction, a first region closest to the first main surface, a second region closest to the second main surface, and a third region between the first region and the second region;
• a degree of resin molecular orientation in the first region of the first section in the Y-axis direction is greater than a degree of resin molecular orientation in the second section of the insulating base material in the Y-axis direction;
• and
• a degree of resin molecular orientation in the second region of the third section in the Y-axis direction is greater than the degree of resin molecular orientation in the second section of the insulating base material in the Y-axis direction.

A resin substrate comprising:

• an insulating base material including a first main surface and a second main surface at least one of which is parallel or substantially parallel to each of an X-axis direction and a Y-axis direction in an X-Y-Z orthogonal coordinate system, the first main surface and the second main surface opposing each other;
• wherein
• the insulating base material is divided into a first section, a second section, and a third section each of which is arranged in the X-axis direction;
• the first section includes, when evenly divided into three in a Z-axis direction, a first region closest to the first main surface, a second region closest to the second main surface, and a third region between the first region and the second region;
• the third section includes, when evenly divided into three in the Z-axis direction, a first region closest to the first main surface, a second region closest to the second main surface, and a third region between the first region and the second region;
• a degree of resin molecular orientation in the second region of the first section in the X-axis direction is greater than a degree of resin molecular orientation in the second section of the insulating base material in the X-axis direction;
• and
• a degree of resin molecular orientation in the first region of the third section in the X-axis direction is greater than the degree of resin molecular orientation in the second section of the insulating base material in the X-axis direction.

A method for manufacturing a resin substrate including an insulating base material including a first main surface and a second main surface at least one of which is parallel or substantially parallel to each of an X-axis direction and a Y-axis direction in an X-Y-Z orthogonal coordinate system, the first main surface and the second main surface opposing each other, wherein the insulating base material is divided into a first section and a second section each of which is arranged in the X-axis direction, and the first section includes, when evenly divided into three in a Z-axis direction, a first region closest to the first main surface, a second region closest to the second main surface, and a third region between the first region and the second region, the method comprising:

• a first molecular orientation step of irradiating a portion in a resin layer, the portion to be the first region of the insulating base material, with a light beam or a laser beam, in order to orient resin molecules of the portion in the Y-axis direction;
• and
• a first insulating base material formation step of, when the first molecular orientation step has been completed, laminating a plurality of resin layers including the resin layer where the resin molecules of the portion have been oriented in the Y-axis direction, and heat-pressing the plurality of resin layers, in order to form the insulating base material, and in order to cause a degree of resin molecular orientation in the first region in the Y-axis direction to be greater than a degree of resin molecular orientation in the second section of the insulating base material in the Y-axis direction.

A method for manufacturing a resin substrate including an insulating base material including a first main surface and a second main surface at least one of which is parallel or substantially parallel to each of an X-axis direction and a Y-axis direction in an X-Y-Z orthogonal coordinate system, the first main surface and the second main surface opposing each other, wherein the insulating base material is divided into a first section and a second section each of which is arranged in the X-axis direction, and the first section includes, when evenly divided into three in a Z-axis direction, a first region closest to the first main surface, a second region closest to the second main surface, and a third region between the first region and the second region, the method comprising:

• a second molecular orientation step of irradiating a portion in a resin layer, the portion to be the second region of the insulating base material, with a light beam or a laser beam, in order to orient resin molecules of the portion in the X-axis direction;
• and
• a first insulating base material formation step of, when the second molecular orientation step has been completed, laminating a plurality of resin layers including the resin layer where the resin molecules of the portion have been oriented in the X-axis direction, and heat-pressing the plurality of resin layers, in order to form the insulating base material, and in order to cause a degree of resin molecular orientation in the second region in the X-axis direction to be greater than a degree of resin molecular orientation in the second section of the insulating base material in the X-axis direction.