Patent ID: 6800497
Filing Date: 2004-10-05
Classification: B41J

Abstract:
A method of manufacturing a power switching transistor for a fluid section device, the method comprising:forming a first conductivity type region; forming a first diffused region within the first conductivity type region, wherein the first diffused region has a first conductivity type and has a greater impurity concentration than the first conductivity type region; forming a gate defined to have a thin oxide region and a thick oxide region, wherein the thick oxide region and a first portion of the thin oxide region are disposed over the first conductivity type region, and wherein the thin oxide region is at a defined distance from the first diffused region; and forming a second diffused region within a second conductivity type region, wherein a second portion of the thin oxide region of the gate is disposed over the second conductivity type region, wherein the second diffused region is adjacent to an edge of the second portion of the thin oxide region of the gate, and wherein the second diffused region has the first conductivity type.