A control apparatus for LED diodes includes a dimmer TRIAC electrically connected in series between a power supply and a LED lighting converter. The thickness of the base is of the order of microns. Next, a mask having a metal layer thereon is disposed over the surface of substrate, in which the mask includes at least one opening for exposing the under bump metallurgy layer. The classification probability indicates an estimated likelihood that the distinct first number of cells is shown in each image. If one of the selected processors fails to fully execute the firmware from the firmware memory, the firmware controller notifies the service processor of that failure as well as the particular memory address in the firmware where the failure occurred. On the other hand, contraction of the internal electrodes 2 and others is relatively promoted in baking, so as to make the internal electrodes 2 and others thinner by baking.