Liquid material vaporization apparatus for semiconductor processing apparatus

A liquid material vaporization apparatus for a semiconductor processing apparatus, comprising:

• a vaporization tank having an interior for containing both a liquid material and a vaporized material of the liquid material;
• an inner partition wall disposed in the tank and having an upper edge for dividing the interior of the tank into a charging compartment and a vaporization compartment which are liquid-communicatable with each other over the upper edge of the inner partition wall, wherein a liquid material charged in the charging compartment overflows over the upper edge of the inner partition wall toward the vaporization compartment to store and vaporize the liquid material in the vaporization compartment, wherein the inner partition wall extends downwards from a ceiling and has a U-shaped cross sectional portion having an end forming the upper edge, wherein a bottom of the U-shaped cross sectional portion is disposed near a bottom of the tank;
• a liquid material inlet disposed near the bottom of the U-shaped cross sectional portion and facing the inner partition wall extending downward from the ceiling in the charging compartment, for supplying the liquid material into the charging compartment of the tank, said liquid material inlet being connected to a liquid material source;
• a vaporized material outlet disposed in an upper portion of the vaporization compartment of the tank, for discharging a vaporized material of the liquid material from the vaporization compartment of the tank, wherein a passage from the liquid material inlet and the vaporized material outlet is formed to pass the same material through the liquid material inlet and the vaporized material outlet;
• and
• a heater disposed for heating the tank and thereby vaporizing the liquid material in the tank.