摘要:
A method is provided for fabricating a microelectronic chip which includes a passive device such, as an inductor, overlying an air gap. In such method, a plurality of front-end-of-line (“FEOL”) devices are formed in a semiconductor region of the microelectronic chip, and a plurality of stacked interlevel dielectric (“ILD”) layers are formed to overlie the plurality of FEOL devices, the plurality of stacked ILD layers including a first ILD layer and a second ILD layer, where the second ILD layer is resistant to attack by a first etchant which attacks the first ILD layer. A passive device is formed to overlie at least the first ILD layer. Using the first etchant, a portion of the first ILD layer in registration with the passive device is removed to form an air gap which underlies the passive device in registration with the passive device.
摘要:
A method is provided for fabricating a microelectronic chip which includes a passive device such, as an inductor, overlying an air gap. In such method, a plurality of front-end-of-line (“FEOL”) devices are formed in a semiconductor region of the microelectronic chip, and a plurality of stacked interlevel dielectric (“ILD”) layers are formed to overlie the plurality of FEOL devices, the plurality of stacked ILD layers including a first ILD layer and a second ILD layer, where the second ILD layer is resistant to attack by a first etchant which attacks the first ILD layer. A passive device is formed to overlie at least the first ILD layer. Using the first etchant, a portion of the first ILD layer in registration with the passive device is removed to form an air gap which underlies the passive device in registration with the passive device.
摘要:
Methods of fabricating a passive element and a semiconductor device including the passive element are disclosed including the use of a dummy passive element. A dummy passive element is a passive element or wire which is added to the chip layout to aid in planarization but is not used in the active circuit. One embodiment of the method includes forming the passive element and a dummy passive element adjacent to the passive element; forming a dielectric layer over the passive element and the dummy passive element, wherein the dielectric layer is substantially planar between the passive element and the dummy passive element; and forming in the dielectric layer an interconnect to the passive element through the dielectric layer and a dummy interconnect portion overlapping at least a portion of the dummy passive element. The methods eliminate the need for planarizing.
摘要:
Methods of fabricating a passive element and a semiconductor device including the passive element are disclosed including the use of a dummy passive element. A dummy passive element is a passive element or wire which is added to the chip layout to aid in planarization but is not used in the active circuit. One embodiment of the method includes forming the passive element and a dummy passive element adjacent to the passive element; forming a dielectric layer over the passive element and the dummy passive element, wherein the dielectric layer is substantially planar between the passive element and the dummy passive element; and forming in the dielectric layer an interconnect to the passive element through the dielectric layer and a dummy interconnect portion overlapping at least a portion of the dummy passive element. The methods eliminate the need for planarizing.
摘要:
Methods of fabricating a passive element and a semiconductor device including the passive element are disclosed including the use of a dummy passive element. A dummy passive element is a passive element or wire which is added to the chip layout to aid in planarization but is not used in the active circuit. One embodiment of the method includes forming the passive element and a dummy passive element adjacent to the passive element; forming a dielectric layer over the passive element and the dummy passive element, wherein the dielectric layer is substantially planar between the passive element and the dummy passive element; and forming in the dielectric layer an interconnect to the passive element through the dielectric layer and a dummy interconnect portion overlapping at least a portion of the dummy passive element. The methods eliminate the need for planarizing.
摘要:
Methods of fabricating a passive element and a semiconductor device including the passive element are disclosed including the use of a dummy passive element. A dummy passive element is a passive element or wire which is added to the chip layout to aid in planarization but is not used in the active circuit. One embodiment of the method includes forming the passive element and a dummy passive element adjacent to the passive element; forming a dielectric layer over the passive element and the dummy passive element, wherein the dielectric layer is substantially planar between the passive element and the dummy passive element; and forming in the dielectric layer an interconnect to the passive element through the dielectric layer and a dummy interconnect portion overlapping at least a portion of the dummy passive element. The methods eliminate the need for planarizing.
摘要:
Methods of fabricating a passive element and a semiconductor device including the passive element are disclosed including the use of a dummy passive element. A dummy passive element is a passive element or wire which is added to the chip layout to aid in planarization but is not used in the active circuit. One embodiment of the method includes forming the passive element and a dummy passive element adjacent to the passive element; forming a dielectric layer over the passive element and the dummy passive element, wherein the dielectric layer is substantially planar between the passive element and the dummy passive element; and forming in the dielectric layer an interconnect to the passive element through the dielectric layer and a dummy interconnect portion overlapping at least a portion of the dummy passive element. The methods eliminate the need for planarizing.
摘要:
Methods of fabricating a passive element and a semiconductor device including the passive element are disclosed including the use of a dummy passive element. A dummy passive element is a passive element or wire which is added to the chip layout to aid in planarization but is not used in the active circuit. One embodiment of the method includes forming the passive element and a dummy passive element adjacent to the passive element; forming a dielectric layer over the passive element and the dummy passive element, wherein the dielectric layer is substantially planar between the passive element and the dummy passive element; and forming in the dielectric layer an interconnect to the passive element through the dielectric layer and a dummy interconnect portion overlapping at least a portion of the dummy passive element. The methods eliminate the need for planarizing.
摘要:
Methods of fabricating a passive element and a semiconductor device including the passive element are disclosed including the use of a dummy passive element. A dummy passive element is a passive element or wire which is added to the chip layout to aid in planarization but is not used in the active circuit. One embodiment of the method includes forming the passive element and a dummy passive element adjacent to the passive element; forming a dielectric layer over the passive element and the dummy passive element, wherein the dielectric layer is substantially planar between the passive element and the dummy passive element; and forming in the dielectric layer an interconnect to the passive element through the dielectric layer and a dummy interconnect portion overlapping at least a portion of the dummy passive element. The methods eliminate the need for planarizing.
摘要:
An Integrated Circuit (IC) chip with one or more vertical plate capacitors, each vertical plate capacitor connected to circuits on the IC chip and a method of making the chip capacitors. The vertical plate capacitors are formed with base plate pattern (e.g., damascene copper) on a circuit layer and at least one upper plate layer (e.g., dual damascene copper) above, connected to and substantially identical with the base plate pattern. A vertical pair of capacitor plates are formed by the plate layer and base plate. Capacitor dielectric between the vertical pair of capacitor plates is, at least in part, a high-k dielectric.