Transistor and manufacturing method thereof
First Claim
1. A transistor, comprising:
- a semiconductor channel layer;
a gate structure disposed on the semiconductor channel layer;
a gate insulation layer disposed between the gate structure and the semiconductor channel layer;
an internal electrode disposed between the gate insulation layer and the gate structure;
a ferroelectric material layer disposed between the internal electrode and the gate structure; and
a spacer disposed on the semiconductor channel layer, wherein a trench surrounded by the spacer is formed above the semiconductor channel layer, the ferroelectric material layer is disposed in the trench, and the gate structure is at least partially disposed outside the trench, wherein the gate structure disposed outside the trench overlaps the topmost surface of the ferroelectric material layer, and the ferroelectric material layer comprises a U-shaped structure in the trench.
1 Assignment
0 Petitions
Accused Products
Abstract
A transistor includes a semiconductor channel layer, a gate structure, a gate insulation layer, an internal electrode, and a ferroelectric material layer. The gate structure is disposed on the semiconductor channel layer. The gate insulation layer is disposed between the gate structure and the semiconductor channel layer. The internal electrode is disposed between the gate insulation layer and the gate structure. The ferroelectric material layer is disposed between the internal electrode and the gate structure. A spacer is disposed on the semiconductor channel layer, and a trench surrounded by the spacer is formed above the semiconductor channel layer. The ferroelectric material layer is disposed in the trench, and the gate structure is at least partially disposed outside the trench. The ferroelectric material layer in the transistor of the present invention is used to enhance the electrical characteristics of the transistor.
-
Citations
18 Claims
-
1. A transistor, comprising:
-
a semiconductor channel layer; a gate structure disposed on the semiconductor channel layer; a gate insulation layer disposed between the gate structure and the semiconductor channel layer; an internal electrode disposed between the gate insulation layer and the gate structure; a ferroelectric material layer disposed between the internal electrode and the gate structure; and a spacer disposed on the semiconductor channel layer, wherein a trench surrounded by the spacer is formed above the semiconductor channel layer, the ferroelectric material layer is disposed in the trench, and the gate structure is at least partially disposed outside the trench, wherein the gate structure disposed outside the trench overlaps the topmost surface of the ferroelectric material layer, and the ferroelectric material layer comprises a U-shaped structure in the trench. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A manufacturing method of a transistor, comprising:
-
forming a gate insulation layer on a semiconductor channel layer; forming an internal electrode on the gate insulation layer; forming a ferroelectric material layer on the internal electrode; forming a gate structure on the ferroelectric material layer, wherein at least a part of the ferroelectric material layer is disposed between the gate structure and the internal electrode; and forming a spacer on the semiconductor channel layer before the step of forming the ferroelectric material layer, wherein a trench surrounded by the spacer is formed above the semiconductor channel layer, and the gate structure is at least partially formed outside the trench, wherein the gate structure formed outside the trench overlaps the topmost surface of the ferroelectric material layer, and the ferroelectric material layer comprises a U-shaped structure in the trench. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
Specification