Patent ID: 7915057

Claim:
A carriage device comprising: semiconductor devices; and a tray capable of accommodating the semiconductor devices, each of the semiconductor devices comprising: a semiconductor chip having a main surface, a rear surface opposite to said main surface, a wiring layer formed over said main surface, an organic film covering the wiring layer and containing opening portions in which the wiring layer is partly exposed, and a plurality of ball electrodes electrically connected to said wiring layer, wherein the tray is provided with a plurality of accommodating portions each capable of accommodating a semiconductor device, of the semiconductor devices, and wherein each of the accommodating portions has a base to support said plurality of ball electrodes of the semiconductor device while maintaining a height of the ball electrodes, and side walls formed around the base such that a first groove portion is formed around the base and such that a second groove portion is formed in the base, continuously to the first groove portion.