Patent ID: 6774450
Filing Date: 2004-08-10
Classification: H01L,H02S,Y02E

Abstract:
A semiconductor device, comprising:a prescribed element formed in a prescribed region on a main surface of a semiconductor substrate and including an impurity region of a first conductivity type and an impurity region of a second conductivity type; conductive regions electrically connected to said prescribed element; and a thermoelectric converting element formed on the main surface of said semiconductor substrate, having one end side arranged in the vicinity of said prescribed region to absorb heat produced in operation of said prescribed element and having the other end side arranged in a region producing smaller amount of heat among regions of said semiconductor substrate; an interlayer insulating film formed on said semiconductor substrate so as to cover said prescribed element and said thermoelectric converting element; a plurality of first contact holes formed in a portion of said interlayer insulating film positioned on said one end side and exposing a surface of said semiconductor region of the first conductivity type respectively; and a plurality of second contact holes formed in a portion of said interlayer insulating film positioned on said one end side and exposing a surface of said semiconductor region of the second conductivity type respectively; wherein said first interconnection portion is electrically connected to said semiconductor region of the first conductivity type and said semiconductor region of the second conductivity type through said plurality of first contact holes and said plurality of second contact holes; and wherein said thermoelectric converting element includes: a semiconductor region of a first conductivity type and a semiconductor region of a second conductivity type respectively formed on the main surface of said semiconductor substrate, extending from the vicinity of said prescribed region to said region producing smaller amount of heat, each of the semiconductor region of a first conductivity type and the semiconductor region of a second conductivity type having an impurity density and depth the same as those in the impurity regions of the first and second conductivity types, respectively, in the prescribed element; a first interconnection portion electrically connected to said semiconductor region of the first conductivity type and said semiconductor region of the second conductivity type on said one end side; a second interconnection portion electrically connected to said semiconductor region of the first conductivity type on said the other end side; a third interconnection portion electrically connected to said semiconductor region of the second conductivity type on said the other end side; the first, second and third interconnection portions in the thermoelectric converting element are formed with a layer the same as a conductive region electrically connected to the element; and the thermoelectric converting element and the prescribed element are formed on the identical substrate; and wherein said prescribed element includes: â€ƒa first transistor including a pair of said impurity regions of the first conductivity type and a first electrode portion; and â€ƒa second transistor including a pair of said impurity regions of the second conductivity type and a second electrode portion.