| 摘要 |
PURPOSE: A printed circuit board with a common electrode is provided to accurately arrange light emitting devices on a printed circuit board by forming a landmark on a common electrode pad allocated to neighboring light emitting devices. CONSTITUTION: A printed circuit board(1) is divided into a first area(A) and a second area(B). First to n-th light emitting devices(10a-10n) are arranged on the first area. An electrode for the light emitting device is arranged in the second area. The light emitting device including the electrode in group is arranged to a longitudinal direction of the first area. The light emitting device arranged on the first area is divided into one or more than two groups. A cathode terminal of a first light emitting device and an anode terminal of a second light emitting device are commonly mounted on a first common electrode pad(20a). The cathode terminal of the second light emitting device and the anode terminal of the second light emitting device are commonly mounted on a second common electrode pad(20b). |
