Long channels for transistors

Abstract

A method includes forming a gate on a first fin, a second fin, and a third fin arranged on a substrate. The method includes depositing a semiconductor material on the first fin, the second fin, and the third fin. The method further includes depositing an interlayer dielectric (ILD) on the first fin, the second fin, and the third fin. The method further includes forming a first trench and a second trench through the ILD on a first side of the gate, and a third trench and a fourth trench through the ILD on a second side of the gate, the second trench coupling the second fin to the third fin, and the third trench coupling the first fin to the second fin. The method includes depositing a metal in the first trench, the second trench, the third trench, and the fourth trench.

What is claimed is: 
     
         1 . A semiconductor device, comprising:
 a first fin, a second fin, and a third fin arranged on a substrate;   a gate arranged on the first fin, the second fin, and the third fin;   a channel extending through the gate and from the first fin, the second fin, and to the third fin in a serpentine fashion; and   a first source/drain and a second source/drain arranged on opposing sides of the gate.   
     
     
         2 . The semiconductor device of  claim 1 , wherein the channel extends through the gate in three areas. 
     
     
         3 . The semiconductor device of  claim 1 , wherein the first fin and the second fin are coupled on one side of the gate. 
     
     
         4 . The semiconductor device of  claim 3 , wherein the second fin and the third fin are coupled on another side of the gate. 
     
     
         5 . The semiconductor device of  claim 3 , wherein the first fin and the second fin are coupled by overlapping epitaxial growth. 
     
     
         6 . The semiconductor device of  claim 5 , wherein the second fin and the third fin are coupled by overlapping epitaxial growth. 
     
     
         7 . The semiconductor device of  claim 1 , wherein the first fin and the second fin are coupled by a metal-filled trench. 
     
     
         8 . The semiconductor device of  claim 7 , wherein and the second fin and the third fin are coupled by a metal-filled trench. 
     
     
         9 . The semiconductor device of  claim 1 , wherein the first fin, the second fin, and the third fin each comprise an epitaxial growth. 
     
     
         10 . A semiconductor device, comprising:
 a first fin, a second fin, and a third fin arranged on a substrate;   a gate arranged on the first fin, the second fin, and the third fin;   a channel extending through the gate and from the first fin, the second fin, and to the third fin in a serpentine fashion, the channel comprising a length greater than 100 nanometers (nm); and   a first source/drain and a second source/drain arranged on opposing sides of the gate.   
     
     
         11 . The semiconductor device of  claim 10 , wherein the channel extends through the gate in three areas. 
     
     
         12 . The semiconductor device of  claim 10 , wherein the first fin and the second fin are coupled on one side of the gate. 
     
     
         13 . The semiconductor device of  claim 12 , wherein the second fin and the third fin are coupled on another side of the gate. 
     
     
         14 . The semiconductor device of  claim 12 , wherein the first fin and the second fin are coupled by overlapping epitaxial growth. 
     
     
         15 . The semiconductor device of  claim 13 , wherein the second fin and the third fin are coupled by overlapping epitaxial growth. 
     
     
         16 . The semiconductor device of  claim 10 , wherein the first fin and the second fin are coupled by a metal-filled trench. 
     
     
         17 . The semiconductor device of  claim 16 , wherein and the second fin and the third fin are coupled by a metal-filled trench. 
     
     
         18 . The semiconductor device of  claim 10 , wherein the first fin, the second fin, and the third fin each comprise an epitaxial growth. 
     
     
         19 . A semiconductor device, comprising:
 a first fin, a second fin, and a third fin arranged on a substrate; and   a channel extending through the gate and from the first fin, the second fin, and to the third fin in a serpentine fashion.   
     
     
         20 . The semiconductor device of  claim 19 , wherein the channel extends through the gate in three areas.