Thread: LVPWELL

Category: ℹ️ - Information Parent channel: #⁉️-questions Thread ID: 1522831168905412791

Messages: 3

message-1522831168905412791

2026-07-04T05:07:23.502+00:00 — tnt (@246tnt)

• Message ID: 1522831168905412791
• Author ID: 596068704471482370
• Nickname: tnt
• User name: 246tnt
• Type: Default
• Discord message: https://discord.com/channels/1361349522684510449/1522831168905412791/1522831168905412791
• Archive source: https://discord.wafer.space/wafer-space/%E2%84%B9%EF%B8%8F%20-%20Information/%E2%81%89%EF%B8%8F-questions/lvpwell/2026-07/2026-07.json

Content

Is that layer necessary ? What does it do exactly ?
Because I can draw a thin gate nmos (i.e. without the `DualGate` layer) without `LVPWELL` and it doesn't seem to change how it's extracted and it doesn't violate DRC either.

<details> <summary>Other message metadata</summary>

{
  "author": {
    "avatarUrl": "2026-07_media/88d17af9d19ab43565b0c46751ef7d12-DFEE5.png",
    "discriminator": "0000",
    "isBot": false
  },
  "message": {}
}

</details>

---

message-1522838521922977894

2026-07-04T05:36:36.598+00:00 — bailey (@bailey8889)

• Message ID: 1522838521922977894
• Author ID: 738396032295108721
• Nickname: bailey
• User name: bailey8889
• Type: Default
• Discord message: https://discord.com/channels/1361349522684510449/1522831168905412791/1522838521922977894
• Archive source: https://discord.wafer.space/wafer-space/%E2%84%B9%EF%B8%8F%20-%20Information/%E2%81%89%EF%B8%8F-questions/lvpwell/2026-07/2026-07.json

Content

I believe `LVPWELL` is used inside deep nwells to create an isolated pwell for nmos with bulk connections other than ground.

<details> <summary>Other message metadata</summary>

{
  "author": {
    "avatarUrl": "2026-07_media/0-EB806.png",
    "discriminator": "0000",
    "isBot": false
  },
  "message": {}
}

</details>

---

message-1522844924465250456

2026-07-04T06:02:03.083+00:00 — tnt (@246tnt)

• Message ID: 1522844924465250456
• Author ID: 596068704471482370
• Nickname: tnt
• User name: 246tnt
• Type: Default
• Discord message: https://discord.com/channels/1361349522684510449/1522831168905412791/1522844924465250456
• Archive source: https://discord.wafer.space/wafer-space/%E2%84%B9%EF%B8%8F%20-%20Information/%E2%81%89%EF%B8%8F-questions/lvpwell/2026-07/2026-07.json

Content

Ok, so when outside deep-nwell it doesn't matter. Good to know ! Tx.

<details> <summary>Other message metadata</summary>

{
  "author": {
    "avatarUrl": "2026-07_media/88d17af9d19ab43565b0c46751ef7d12-DFEE5.png",
    "discriminator": "0000",
    "isBot": false
  },
  "message": {}
}

</details>

---