Patent ID: 8294243

Claim:
An integrated circuit comprising a lateral bipolar transistor, comprising: isolation regions respectively isolating first, second, third, fourth and filth surface portions of a first conductivity type region of a semiconductor substrate; a first well region of a second conductivity type formed in the second, third and fourth surface portions; second and third well regions of the first conductivity type formed in the first well region in the third surface portion; the second and third well regions being separated from each other across a channel region of the second conductivity type in the first well region in the third surface portion; a single gate structure including a gate electrode over a gate dielectric formed over the channel region, wherein at least part of the second and third well regions directly underlie the gate electrode; first source/drain regions comprising surface regions of a higher concentration of the first conductivity type formed within upper parts of the first and fifth surface portions and within upper parts of the second and third well regions; and second source/drain regions comprising surface regions of a higher concentration of the second conductivity type formed within upper parts of the second and fourth surface portions within the first well region; wherein the regions of the higher concentrations establish base, collector, emitter and substrate contact areas for the bipolar transistor.