Semiconductor and method of fabricating the same
View Patent ↗Provided is a semiconductor and method of manufacturing the same, and a method of forming even doping concentration of respective semiconductor device when manufacturing multiple semiconductor devices. When a concentration balance is disrupted due to an increase in doping region size, doping concentration is still controllable in example by using ion injected blocking pattern. Thus, the examples relate to a semiconductor and manufacture device with even doping, and high breakdown voltage obtainable as a result of such doping.
1. A semiconductor device comprising:
a first region and a second region located on a substrate;
a first semiconductor device located in the first region and having a first deep well region with a first doping concentration;
a second semiconductor device located in the second region and having a second deep well region with a second doping concentration that is greater than the first doping concentration;
a first body region of a first conductivity type having a third doping concentration, adjacent to the first deep well region, wherein the first doping concentration is less than the third doping concentration; and
a second body region of a second conductivity type opposite to the first conductivity type located in the first body region,
wherein the first deep well region has a non-planar doping profile in a horizontal direction.
2. The semiconductor device of claim 1 ,
wherein the first deep well region has an uneven bottom surface.
3. The semiconductor device of claim 1 ,
wherein a total doping concentration of the first deep well region and the first body region is substantially balanced with a total doping concentration of the second deep well region.
4. The semiconductor device of claim 1 ,
wherein the first doping concentration is less than the second doping concentration by within one order of magnitude.
5. The semiconductor device of claim 1 , further comprising:
a pinch-off region in the semiconductor substrate located between the first deep well region and the first body region.
6. The semiconductor device of claim 1 ,
wherein the first deep well region has substantially the same depth as the first body region.
7. The semiconductor device of claim 1 ,
wherein the first deep well region has a bottom surface that has a wave-shaped pattern.
8. The semiconductor device of claim 1 ,
wherein the first deep well region has the same conductivity type as the first body region.
9. A semiconductor device comprising:
a first deep well region with a first doping concentration of a first semiconductor device located in a first region located on a substrate;
a second deep well region with a second doping concentration that is greater than the first doping concentration of a second semiconductor device located in a second region located on a substrate;
a first body region of a first conductivity type with a third doping concentration adjacent to the first deep well region, wherein the first doping concentration is less than the third doping concentration; and
a second body region of a second conductivity type opposite to the first conductivity type located in the first body region,
wherein the first deep well region has a non-planar doping profile in a horizontal direction.
10. The semiconductor device of claim 9 ,
wherein the first deep well region has an uneven bottom surface.
11. The semiconductor device of claim 9 ,
wherein a total doping concentration of the first deep well region and the first body region is substantially balanced with a total doping concentration of the second deep well region.
12. The semiconductor device of claim 9 ,
wherein the first doping concentration is less than the second doping concentration by within one order of magnitude.
13. The semiconductor device of claim 9 , further comprising:
a pinch-off region in the semiconductor substrate located between the first deep well region and the first body region.
14. The semiconductor device of claim 9 ,
wherein the first deep well region has substantially the same depth as the first body region.
15. The semiconductor device of claim 9 ,
wherein the first deep well region has a bottom surface that has a wave-shaped pattern.
16. The semiconductor device of claim 9 ,
wherein the first deep well region has the same conductivity type as the first body region.