| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a highly reliable flat lighting device in which no disconnection is generated in the conductive pattern of a flexible printed circuit board for mounting a point light source. <P>SOLUTION: The flat lighting device 20 has a light guide 2, the point light source 5 disposed in the side edge plans 2a of the light guide 2, and the flexible printed circuit board 26 for mounting the point light source 5. The land portion of the conductive pattern formed on the flexible printed circuit board 26 has a predetermined width conform to the width of the electrode terminal of the point light source 5. The extending direction of the land conforms to the lateral direction of the side edge plane 2a of the light guide 2. The highly reliable flat lighting device in which no disconnection is generated is thus given without lowering the bonding efficiency between the point light source 5 and the light guide 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
