摘要:
First of all, a semiconductor substrate is provided, and then a first/second wells with a first conductivity are formed therein so as to individually form a first part of the floating gate of single-level EEPROM and a low-voltage device thereon, wherein the first and the second wells are used to separate the high-voltage device, and the depth of the first well is the same as the second well. Furthermore, the high-voltage device and the second part of the floating gate of single-level EEPROM are individually formed on the semiconductor substrate between the first and the second wells, and the control gate of the floating gate of single-level EEPROM is formed in the third well located under the second part of the floating gate of single-level EEPROM, wherein the high-voltage device can be operated in the opposite electric field about 18V, such as −6V˜12V, −12V˜6V, −9V˜9V etc.
摘要:
The present invention provides a method of integrating at least one high voltage metal oxide semiconductor device and at least one Submicron metal oxide semiconductor device on a substrate. The method comprises: providing the substrate, forming a plurality of shallow trenches having different depths on a surface of the substrate, and forming a plurality of silicon oxide layers filling up the shallow trenches, and a top of each of the silicon oxide layers being in the shape of a mushroom.
摘要:
The present invention provides a method of integrating at least one high voltage metal oxide semiconductor device and at least one Submicron metal oxide semiconductor device on a substrate. The method comprises: providing the substrate, forming a plurality of shallow trenches having different depths on a surface of the substrate, and forming a plurality of silicon oxide layers filling up the shallow trenches, and a top of each of the silicon oxide layers being in the shape of a mushroom.
摘要:
First of all, a semiconductor substrate is provided, and then a first/second wells with a first conductivity are formed therein so as to individually form a first part of the floating gate of single-level EEPROM and a low-voltage device thereon, wherein the first and the second wells are used to separate the high-voltage device, and the depth of the first well is the same as the second well. Furthermore, the high-voltage device and the second part of the floating gate of single-level EEPROM are individually formed on the semiconductor substrate between the first and the second wells, and the control gate of the floating gate of single-level EEPROM is formed in the third well located under the second part of the floating gate of single-level EEPROM, wherein the high-voltage device can be operated in the opposite electric field about 18V, such as −6V˜12V, −12V˜6V, −9V˜9V etc.
摘要:
A high-voltage semiconductor MOS process that is fully compatible with low-voltage MOS process is provided. The high-voltage N/P well are implanted into the substrate prior to the definition of active areas. The channel stop doping regions are formed after the formation of field oxide layers, thus avoiding lateral diffusion of the channel stop doping regions. In addition, the grade drive-in process used to activate the grade doping regions in the high-voltage device area and the gate oxide growth of the high-voltage devices are performed simultaneously.
摘要:
An architecture of poly fuses includes a number of fuses, a dielectric layer, a sheet-like etching stop layer, and a passivation layer, wherein the sheet-like etching stop layer further includes a number of slices, and wherein each of the slices corresponds to one of the fuses underneath. The architecture of poly fuses according to the invention reduces the energy dispersion during the defective recovering process, and improves the recovery rate for defective memory cells.
摘要:
The present invention provides a method of forming devices having different operation voltages. First, a substrate having an HV region, an MV region, and an LV region is provided. Then, at least a deep well encompassing the LV region and the MV region is formed in the substrate. Afterward, a plurality of n-wells and a plurality of p-wells are in the HV region, the MV region, and the LV region. Following that, a plurality of HV devices are formed in the HV region, a plurality of MV devices are formed in the MV region, and a plurality of LV devices are formed in the LV region.
摘要:
The present invention provides a method of forming devices having different operation voltages. First, a substrate having an HV region, an MV region, and an LV region is provided. Then, at least a deep well encompassing the LV region and the MV region is formed in the substrate. Afterward, a plurality of n-wells and a plurality of p-wells are in the HV region, the MV region, and the LV region. Following that, a plurality of HV devices are formed in the HV region, a plurality of MV devices are formed in the MV region, and a plurality of LV devices are formed in the LV region.
摘要:
A method of fabricating an interconnect is described in which a conductive layer, an anti-reflection layer and a cover layer are sequentially formed on the substrate to form a conductive plug with its bottom situated in the anti-reflection layer. The cover layer and a portion of the anti-reflection layer and the conductive layer are remove to form an opening exposing the substrate and to define the conductive lining structures. A conformal polysilicon oxide layer is formed on the substrate and a first dielectric layer is also formed, filling the opening. A conformal isolation layer is then formed on the substrate, followed by forming a second dielectric layer covering the entire substrate. A planarization procedure is further conducted to expose the conductive plug.
摘要:
A high-voltage semiconductor MOS process that is fully compatible with low-voltage MOS process is provided. The high-voltage N/P well are implanted into the substrate prior to the definition of active areas. The channel stop doping regions are formed after the formation of field oxide layers, thus avoiding lateral diffusion of the channel stop doping regions. In addition, the grade drive-in process used to activate the grade doping regions in the high-voltage device area and the gate oxide growth of the high-voltage devices are performed simultaneously.