Abstract: A flexible printed wiring board includes a first conductor layer in the element mounting part adjacent to the top surface of the wiring board; a second conductor layer in the element mounting part adjacent to the bottom surface of the wiring board; and a third conductor layer between the first conductor layer and the second conductor layer, wherein the first and third conductor layers extend through and beyond the bending part, and the second conductor layer is absent in the bending part.

Abstract: A printed wiring board comprises the insulating layer 11 (12); at least one resistance element 311 (312) comprising a metal as a main component has 0.5 to 5 ?m of a roughened surface in an arithmetic means height in the one surface, in ?Z direction, and 5% to 50% of the arithmetic mean height in average thickness, which is embedded close to a surface on one side of the insulating layer 11 and a conductive pattern wired surface is composed of the one surface of the resistance element and the one side of the insulating layer 11; and the conductive pattern 351 (352), arranged on the conductive pattern wired surface, is connected to the terminal of the resistance element 311 (312). With this structure, it is provided the printed wiring board comprising the resistance element having an accurate and stable resistance value in a broader resistance value range.

Abstract: A flexible printed wiring board includes a first conductor layer in the element mounting part adjacent to the top surface of the wiring board; a second conductor layer in the element mounting part adjacent to the bottom surface of the wiring board; and a third conductor layer between the first conductor layer and the second conductor layer, wherein the first and third conductor layers extend through and beyond the bending part, and the second conductor layer is absent in the bending part.

Abstract: A flexible printed wiring board includes a first conductor layer in the element mounting part adjacent to the top surface of the wiring board; a second conductor layer in the element mounting part adjacent to the bottom surface of the wiring board; and a third conductor layer between the first conductor layer and the second conductor layer, wherein the first and third conductor layers extend through and beyond the bending part, and the second conductor layer is absent in the bending part.

Abstract: A flexible printed wiring board includes a first conductor layer in the element mounting part adjacent to the top surface of the wiring board; a second conductor layer in the element mounting part adjacent to the bottom surface of the wiring board; and a third conductor layer between the first conductor layer and the second conductor layer, wherein the first and third conductor layers extend through and beyond the bending part, and the second conductor layer is absent in the bending part.

Abstract: A printed wiring board comprises the insulating layer 11 (12); at least one resistance element 31, (312) comprising a metal as a main component has 0.5 to 5 ?m of a roughened surface in an arithmetic means height in the one surface, in ?Z direction, and 5% to 50% of the arithmetic mean height in average thickness, which is embedded close to a surface on one side of the insulating layer 11 and a conductive pattern wired surface is composed of the one surface of the resistance element and the one side of the insulating layer 11; and the conductive pattern 351 (352), arranged on the conductive pattern wired surface, is connected to the terminal of the resistance element 311 (312). With this structure, it is provided the printed wiring board comprising the resistance element having an accurate and stable resistance value in a broader resistance value range.