Transistor Era Moves to Next Dimension

by Unknown

3D transistor ,What's that?
You may wonder what a 3D transistor means.Now we use 2D transistor ,in which the gate is a two dimentional planar structure.But in 3D transistor this gate is replaced with a three dimensional silicon fin that rises up vertically from the silicon substrate.That means it is a Tri-Gate transistor.



What diffrence it makes??
See the figure above.The first one is conventional planar transistor in which the gate ,which control entire operation of transistor, is in contact with the substrate,body of the transistor,through a single plane.
The left one is the 3D transistor in which the substrate is projected up,which is called Silicon Fin.That is now the gate is in contact with sustrate thr
ough three planes.

Why is this important?

It's necessary to sustain Moore's Law--doubling the number of transistors on a silicon device every two years. As device dimensions become prohibitively small, cramming in transistors in the traditional two-dimensional fashion becomes impossible. So, 3D or vertical transistors become necessary. And Intel isn't just talking about this theoretically, it's going to manufacture chips based on these transistors.

Expectations!!!!

Intel says the transistors will use 50 percent less power, conduct more current and provide 37 percent more speed than their 2D counterparts.The 3D technology allow to operate at lower voltage at lower leakage .It ensure both improved efficiency and energy leakage.But the tri-gate tech adds an estimate of 2 to 3 percent cost to existing silicon wafers.