Printed board and manufacturing method thereof

A printed board comprising:

• a thermoplastic resin member which is formed from a plurality of stacked thermoplastic resin films;
• a plurality of conductor patterns arranged in thermoplastic resin member in a multi-layer;
• and
• a land as an electrode provided on a land forming surface of one thermoplastic resin film among the stacked thermoplastic resin films, wherein
• the one thermoplastic resin film is colored so as to set a difference in light reflectivity between the land and the one thermoplastic resin film, to be greater than that between the land and other thermoplastic resin films except for the one thermoplastic resin film.

A manufacturing method of a printed board comprising:

• forming a land as an electrode on a land forming surface of a first resin film made of a thermoplastic resin material;
• preparing a second resin film made of a colored thermoplastic resin material in which a colored inorganic pigment is added;
• stacking the second resin film on the land forming surface of the first resin film at a predetermined position to form a stacked member;
• pressing and heating the staked member of the first resin film and the second resin film by using a hot press machine, so as to bond the first resin film and the second resin film to each other;
• and
• forming an opening portion in the second resin film at a position of the land so as to expose at least a part of the land from the opening portion.

A manufacturing method comprising:

• forming a first resin film made of a thermoplastic resin material;
• forming a land as an electrode on a land forming surface of a second resin film made of a thermoplastic resin material in which a colored inorganic pigment is added so as to set a difference in light reflectivity of the land with respect to the second resin film to be greater than a difference in light reflectivity of the land with respect to the first resin film;
• stacking plural resin films made of thermoplastic resin, including the first resin film and the second resin film to form a stacked member, wherein the first resin film contacts a surface of the second resin film, opposite to the land forming surface;
• and
• pressing and heating the staked member by using a hot press machine, so as to bond the stacked resin films to each other.