Techniques are disclosed for performing robust feature matching for visual search. The cell transistor comprises a P type silicon substrate, a control gate CG and a pair of electrically isolated floating gates. Furthermore, the ejector, the first evaporator, the second evaporator and the refrigerant suction pipe are arranged in a passenger compartment of the vehicle. With the channel protection layer, damage to the oxide semiconductor layer or a reduction in film thickness due to the chemical mechanical polishing treatment on the conductive film can be suppressed.