Meander resistor
View Patent ↗The present invention relates in general to the field of integrated circuits, and more specifically to a meander resistor. Basically, a meander resistor can be considered as a bar resistor with the exception of the corner squares (right-angle bends). The Electrostatic Discharge (ESD) sensitivities of on-chip resistors can be a problem for both electronic manufactures and electronic component users. As others components, passive devices are known to be susceptible to ESD events. The context of this invention is to improve the reliability of the resistors during an ESD event. An ESD stress means that high current and high voltage levels are applied to the device. The device has to be able to dissipate this energy without failure.
1. Semiconductor device for preventing ESD damage comprising:
a substrate,
a 3-D shaped body comprising a non-conducting material on said substrate, which body further comprises a meander resistor having a generally rectangular outer shape which resistor comprises a conducting material, the resistor having resistor heads,
wherein the 3-D shaped body electrically isolates the meander resistor from its environment; and
wherein the resistor heads are each located along a side edge of the rectangle away from a corner of the rectangle at least 0.1 times the length of the side edge from the corner.
2. Semiconductor device according to claim 1 , wherein the heads are each located along a side edge of the rectangle at least 0.2 times the length of the side edge from the corner.
3. Semiconductor device according to claim 1 , wherein the meander resistor is made on top of one or more substrates, wherein the substrates are chosen from the group consisting of silicon, laminate, LTCC, or combinations thereof.
4. Semiconductor device according to claim 1 , wherein the resistor is made of a material chosen from the group consisting of polysilicon, metal, doped (poly) silicon, or combinations, thereof.
5. Device, such as a circuit, such as a filtering network, a matching network, and/or a silicon based system in package (sbSIP), such as a RF transceiver for a mobile phone, comprising a semiconductor device according to claim 1 .
6. The semiconductor device according to claim 4 , wherein the resistor is made of polysilicon.
7. The semiconductor device according to claim 1 , wherein the heads are each located along a side edge of the rectangle at approximately 0.4-0.6 times the length of the side edge from the corner.
8. The semiconductor device according to claim 1 , wherein the heads are each located along one of the longest side edges of the rectangle.
9. The semiconductor device according to claim 2 , wherein the heads are each located along one of the longest side edges of the rectangle.
10. The semiconductor device according to claim 7 , wherein the heads are each located along one of the longest side edges of the rectangle.