| 摘要 |
PROBLEM TO BE SOLVED: To improve the mounting accuracy of an LED on a printed circuit board.SOLUTION: A printed circuit board 15 includes a land 75 for an anode electrode, a land 76 for a first cathode electrode, and a land 77 for a second cathode electrode respectively connected by soldering to an anode electrode 72, a first cathode electrode 73, and a second cathode electrode 74 of an LED 18. Among the lands, the land 75 for the anode electrode and the land 76 for the first cathode electrode which are adjacent to each other are configured such that the side faces thereof which are not covered with a solder resist 82 face each other. |
