JPH01157453U - - Google Patents

Info

Publication number

JPH01157453U

JPH01157453U JP4704388U JP4704388U JPH01157453U JP H01157453 U JPH01157453 U JP H01157453U JP 4704388 U JP4704388 U JP 4704388U JP 4704388 U JP4704388 U JP 4704388U JP H01157453 U JPH01157453 U JP H01157453U

Authority

JP

Japan

Prior art keywords

substrate

conductivity type

region

semiconductor device

bottom wall

Prior art date

1988-04-06

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Pending

Links

• Espacenet
• Global Dossier
• Discuss

• 239000000758 substrate Substances 0.000 claims description 6
• 239000004065 semiconductor Substances 0.000 claims description 3
• 238000002955 isolation Methods 0.000 claims 2
• 239000003989 dielectric material Substances 0.000 claims 1
• 238000009792 diffusion process Methods 0.000 description 1
• 238000004519 manufacturing process Methods 0.000 description 1
• 238000000926 separation method Methods 0.000 description 1