发明名称 |
High-precision resistor and trimming method thereof |
摘要 |
An embodiment of an electrically trimmable electronic device, wherein a resistor of electrically modifiable material is formed by a first generally strip-shaped portion and by a second generally strip-shaped portion, which extend transversely with respect to one another and are in direct electrical contact in a crossing area. The first and second portions have respective ends connected to own contact regions, coupled to a current pulse source and are made of the same material or of the same composition of materials starting from a same resistive layer of the material having electrically modifiable resistivity, for example, a phase-change material, such as a Ge—Sb—Te alloy, or polycrystalline silicon, or a metal material used for thin-film resistors. The trimming is performed by supplying a trimming current to the second portion so as to heat the crossing area and modify the resistivity thereof, without flowing longitudinally in the first portion. |
申请公布号 |
US8952492(B2) |
申请公布日期 |
2015.02.10 |
申请号 |
US201113173214 |
申请日期 |
2011.06.30 |
申请人 |
STMicroelectronics S.R.L. |
发明人 |
Privitera Stefania Maria Serena;Santangelo Antonello |
分类号 |
H01L27/06;H01C17/26;H01C7/00;H01C7/06;H01L21/66;H01L49/02 |
主分类号 |
H01L27/06 |
代理机构 |
Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A. |
代理人 |
Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A. |
主权项 |
1. An article, comprising:
a first region having ends and a first inner portion disposed between the ends and formed from a first material having an electrically modifiable resistivity; a second region having ends and intersecting the first region at the inner portion; and a third region disposed in electrical parallel with the first region. |
地址 |
Agrate Brianza (MB) IT |