Thin film resistors integrated at a single metal interconnect level of die
US7202533B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2005 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Sep 29, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
An integrated circuit structure includes a first dielectric layer disposed on a semiconductor layer, a first thin film resistor disposed on the first dielectric layer, a second dielectric layer disposed on the first dielectric layer and the first thin film resistor, and a second thin film resistor disposed on the second dielectric layer. A first layer of interconnect conductors is disposed on the second dielectric layer and includes a first interconnect conductor contacting a first contact area of the first thin film resistor, a second interconnect conductor contacting a second contact area of the first thin film resistor, and a third interconnect conductor electrically contacting a first contact area of the second thin film resistor. A third dielectric layer is disposed on the second dielectric layer. A second layer of interconnect conductors is disposed on the third dielectric layer including a fourth interconnect conductor for contacting the second interconnect conductor. A fifth interconnect conductor of the first layer of interconnect conductors contacts the circuit element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.