摘要:
A method of controlling gate formation of semiconductor devices includes determining the correlation between the step heights of isolation structures and the over-etching time by measuring step heights of isolation structures, determining an over-etching time based on the step heights, and etching gates using the over-etching time. The method may include an after-etching-inspection to measure the gate profile and fine-tune the gate formation control. Within-wafer uniformity can also be improved by measuring the step height uniformity on a wafer and adjusting gate formation processes.
摘要:
A method of controlling gate formation of semiconductor devices includes determining the correlation between the step heights of isolation structures and the over-etching time by measuring step heights of isolation structures, determining an over-etching time based on the step heights, and etching gates using the over-etching time. The method may include an after-etching-inspection to measure the gate profile and fine-tune the gate formation control. Within-wafer uniformity can also be improved by measuring the step height uniformity on a wafer and adjusting gate formation processes.
摘要:
A adjustable upper coil or electrode for a reaction chamber apparatus useable in semiconductor processing, is constructed so that its shape may be selectively changed or so at least two portions thereof may be selectively driven at different power and/or frequencies. The adjustable upper coil or electrode, therefore, enables the plasma density distribution in the reaction chamber apparatus to be selectively controlled.
摘要:
A device includes a semiconductor substrate having a front side and a backside. A photo-sensitive device is disposed on the front side of the semiconductor substrate. A dielectric layer is disposed on the backside of the semiconductor substrate, wherein the dielectric layer is over a back surface of the semiconductor substrate. A metal shield is over the dielectric layer and overlapping the photo-sensitive device. A metal plug penetrates through the dielectric layer, wherein the metal plug electrically couples the metal shield to the semiconductor substrate.
摘要:
A dual damascene process. A first photoresist layer with a first opening corresponding to a trench pattern is formed on a dielectric layer. A second photoresist layer with a second opening corresponding to a via pattern smaller then the trench pattern is formed on the first photoresist layer and extends to a portion of the dielectric layer. The second photoresist layer has a material character different from the first photoresist layer. A via etching process using the second photoresist as a mask is performed to form a via hole passing through the dielectric layer. A photoresist ashing process is performed to remove the second photoresist layer. A trench etching process using the first photoresist layer as a mask is performed to form a trench in the upper portion of the dielectric layer. The via etching process, the photoresist ashing process and the trench etching process are performed as a continuous process in one chamber.
摘要:
A adjustable upper coil or electrode for a reaction chamber apparatus useable in semiconductor processing, is constructed so that its shape may be selectively changed or so at least two portions thereof may be selectively driven at different power and/or frequencies. The adjustable upper coil or electrode, therefore, enables the plasma density distribution in the reaction chamber apparatus to be selectively controlled.
摘要:
The presented principles describe an apparatus and method of making the same, the apparatus being a semiconductor circuit device, having shallow trench isolation features bounding an active area and a periphery area on a semiconductor substrate to electrically isolate structures in the active area from structures in the periphery area. The shallow trench isolation feature bounding the active area is shallower than the shallow trench isolation feature bounding the periphery area, with the periphery area shallow trench isolation structure being formed through two or more etching steps.
摘要:
The presented principles describe an apparatus and method of making the same, the apparatus being a semiconductor circuit device, having shallow trench isolation features bounding an active area and a periphery area on a semiconductor substrate to electrically isolate structures in the active area from structures in the periphery area. The shallow trench isolation feature bounding the active area is shallower than the shallow trench isolation feature bounding the periphery area, with the periphery area shallow trench isolation structure being formed through two or more etching steps.
摘要:
A dual damascene process. A first photoresist layer with a first opening corresponding to a trench pattern is formed on a dielectric layer. A second photoresist layer with a second opening corresponding to a via pattern smaller then the trench pattern is formed on the first photoresist layer and extends to a portion of the dielectric layer. The second photoresist layer has a material character different from the first photoresist layer. A via etching process using the second photoresist as a mask is performed to form a via hole passing through the dielectric layer. A photoresist ashing process is performed to remove the second photoresist layer. A trench etching process using the first photoresist layer as a mask is performed to form a trench in the upper portion of the dielectric layer. The via etching process, the photoresist ashing process and the trench etching process are performed as a continuous process in one chamber.
摘要:
A device includes a semiconductor substrate having a front side and a backside. A photo-sensitive device is disposed on the front side of the semiconductor substrate. A dielectric layer is disposed on the backside of the semiconductor substrate, wherein the dielectric layer is over a back surface of the semiconductor substrate. A metal shield is over the dielectric layer and overlapping the photo-sensitive device. A metal plug penetrates through the dielectric layer, wherein the metal plug electrically couples the metal shield to the semiconductor substrate.