Printed circuit board with wiring pattern formed thereon by screen printing and process for manufacturing the same

1. A printed circuit board having an insulating board and a plurality of wiring patterns formed over the insulating board by screen printing and provided with conductive pattern bent parts and wiring parts linked to the conductive pattern bent parts, wherein a pattern width in the conductive pattern bent parts is greater than that of the patterns of those of the wiring parts positioned close to and on both sides of the conductive pattern bent parts,

wherein a pitch of patterns in the conductive pattern bent parts is formed greater than that of the patterns of those of the wiring parts positioned close to and on both sides of the conductive pattern bent parts.

2. The printed circuit board according to claim 1 , wherein the wiring patterns are screen-printed in such a printing direction that the conductive pattern bent parts are formed by printing earlier than the wiring parts.

3. The printed circuit board according to claim 1 , wherein the insulating board has insulating board angled parts and cables linked to both sides of the insulating board angled parts, wherein a width of the insulating board angled parts is formed greater than that of the cables, wherein the conductive pattern bent parts are positioned in the insulating board angled parts, and wherein a plurality of the wiring patterns are provided in a state in which the wiring parts are positioned on the cables.

4. A printed circuit board having an insulating board and a plurality of wiring patterns formed over the insulating board by screen printing, comprising:

first conductive pattern bent parts;

first wiring parts linked to the first conductive pattern bent parts;

second conductive pattern bent parts; and

second wiring parts linked to the second conductive pattern bent parts;

wherein the first conductive pattern bent parts are bent in a direction reverse to the second conductive pattern bent parts,

wherein a pattern width in the first conductive pattern bent parts is formed greater than that of the first wiring parts positioned close to and on both sides of the first conductive pattern bent parts,

wherein a pattern width in the second conductive pattern bent parts is formed greater than that of the second wiring parts positioned close to and on both sides of the second conductive pattern bent parts, and

wherein a pitch of patterns in the first conductive pattern bent parts is formed greater than that of the patterns of those of the wiring parts positioned close to and on both sides of the first conductive pattern bent parts, and wherein gaps between adjoining ones of the first conductive pattern bent parts are formed wider than those between those of the wiring parts positioned close to and on both sides of the first conductive pattern bent parts.

5. A printed circuit board having an insulating board and a plurality of wiring patterns formed over the insulating board by screen printing, comprising:

first conductive pattern bent parts;

first wiring parts linked to the first conductive pattern bent parts;

second conductive pattern bent parts; and

second wiring parts linked to the second conductive pattern bent parts;

wherein the first conductive pattern bent parts are bent in a direction reverse to the second conductive pattern bent parts,

wherein a pattern width in the first conductive pattern bent parts is formed greater than that of the first wiring parts positioned close to and on both sides of the first conductive pattern bent parts,

wherein a pattern width in the second conductive pattern bent parts is formed greater than that of the second wiring parts positioned close to and on both sides of the second conductive pattern bent parts, and

wherein the insulating board has first insulating board angled parts bent in a direction reverse to the second insulating board angled parts and cables linked to both sides of the first insulating board angled parts, wherein a width of the first insulating board angled parts is formed greater than that of the cables, and wherein a plurality of the wiring patterns are provided in a state in which the first conductive pattern bent parts are positioned in the first insulating board angled parts and the wiring parts are positioned in the cables.

6. The printed circuit board according to claim 5 , wherein the first insulating board angled parts bent in a direction reverse to the second insulating board angled parts and the second insulating board angled parts are formed adjoining each other, linked by the cables.