Vibration-type paper cutting device

Disclosed is a method for correcting a transistor of a predetermined threshold value. According to the method, after preparing a gate 13 of the transistor, depending on how well the gate is prepared, a threshold voltage Vth showing transistor characteristic is corrected by adjusting an oxygen concen...

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Bibliographic Details
Main Author NISHIMURA KAZUO,MAJIMA TOSHIYUKI
Format Patent
LanguageEnglish
Published 15.03.2006
Subjects
BASIC ELECTRIC ELEMENTS
CUTTING
DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING,CUTTING-OUT, STAMPING-OUT OR SEVERING
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
HAND CUTTING TOOLS
PERFORMING OPERATIONS
SEMICONDUCTOR DEVICES
SEVERING
TRANSPORTING
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Summary:Disclosed is a method for correcting a transistor of a predetermined threshold value. According to the method, after preparing a gate 13 of the transistor, depending on how well the gate is prepared, a threshold voltage Vth showing transistor characteristic is corrected by adjusting an oxygen concentration of a lamp-annealing step 21, which is to be performed subsequently. Moreover, disclosed is a method for fabricating a transistor of a predetermined threshold value. According to the method, after preparing the gate 13 of the transistor, the threshold voltage Vth showing the transistor characteristic is predicted or measured. When the threshold voltage deviates from the predetermined value, the oxygen concentration is adjusted in the lamp-annealing step 21 of the transistor that is to be fabricated subsequently and thus the threshold value is set to the predetermined value without lowered reliability due to the damage of the gate oxide film and without additional process steps.
Bibliography:Application Number: CN200480003441