SUBSTRATE AND PLANAR ILLUMINATION DEVICE

The present invention provides a substrate and a planer illumination device which can determine the installation position of the light source in a high precision mode. The substrate according to an embodiment includes a plurality of land portions that are bonded to a plurality of terminals of a light source via solder, respectively, the light source having the terminals on a surface other than a light-emitting surface, each of the land portions having a cutout provided by cutting in accordance with a shape of the corresponding terminal. 本发明提供基板以及面状照明装置，能够高精度地确定光源的安装位置。实施方式的基板具备多个焊盘部，上述多个焊盘部与在发光面以外的任一个面具有多个端子的光源的上述端子分别经由焊料接合，且上述多个焊盘部具有以与上述端子的形状相配合的方式形成切口的切口部。