摘要:
Methods for fabricating dual bit memory devices are provided. In an exemplary embodiment of the invention, a method for fabricating a dual bit memory device comprises forming a charge trapping layer overlying a substrate and etching an isolation opening through the charge trapping layer. An oxide layer is formed overlying the charge trapping layer and within the isolation opening. A control gate is fabricated overlying the isolation opening and portions of the charge trapping layer adjacent to the isolation opening. The oxide layer and the charge trapping layer are etched using the control gate as an etch mask and impurity dopants are implanted into the substrate using the control gate as an implantation mask.
摘要:
Methods for fabricating dual bit memory devices are provided. In an exemplary embodiment of the invention, a method for fabricating a dual bit memory device comprises forming a charge trapping layer overlying a substrate and etching an isolation opening through the charge trapping layer. An oxide layer is formed overlying the charge trapping layer and within the isolation opening. A control gate is fabricated overlying the isolation opening and portions of the charge trapping layer adjacent to the isolation opening. The oxide layer and the charge trapping layer are etched using the control gate as an etch mask and impurity dopants are implanted into the substrate using the control gate as an implantation mask.
摘要:
Methods for fabricating flash memory devices are provided. In accordance with an exemplary embodiment of the invention, a method for fabricating a memory device comprises forming a first gate stack and a second gate stack overlying a substrate. A trench is etched into the substrate between the first gate stack and the second gate stack. A first impurity doped region is formed within the substrate underlying the trench.
摘要:
Memory devices having improved TPD characteristics and methods of making the memory devices are provided. The memory devices contain two or more memory cells on a semiconductor substrate and bit line openings containing a bit line dielectric between the memory cells. The memory cell contains a charge storage layer and a first poly gate. The bit line opening extends into the semiconductor substrate. By containing the bit line dielectric in the bit line openings that extend into the semiconductor substrate, the memory device can improve the electrical isolation between memory cells, thereby preventing and/or mitigating TPD.
摘要:
Memory devices having improved TPD characteristics and methods of making the memory devices are provided. The memory devices contain two or more memory cells on a semiconductor substrate and bit line openings containing a bit line dielectric between the memory cells. The memory cell contains a charge storage layer and a first poly gate. The bit line opening extends into the semiconductor substrate. By containing the bit line dielectric in the bit line openings that extend into the semiconductor substrate, the memory device can improve the electrical isolation between memory cells, thereby preventing and/or mitigating TPD.
摘要:
Memory devices having improved TPD characteristics and methods of making the memory devices are provided. The memory devices contain two or more memory cells on a semiconductor substrate and bit line openings containing a bit line dielectric between the memory cells. The memory cell contains a charge storage layer and a first poly gate. The bit line opening extends into the semiconductor substrate. By containing the bit line dielectric in the bit line openings that extend into the semiconductor substrate, the memory device can improve the electrical isolation between memory cells, thereby preventing and/or mitigating TPD.
摘要:
Memory devices having improved TPD characteristics and methods of making the memory devices are provided. The memory devices contain two or more memory cells on a semiconductor substrate and bit line openings containing a bit line dielectric between the memory cells. The memory cell contains a charge storage layer and a first poly gate. The bit line opening extends into the semiconductor substrate. By containing the bit line dielectric in the bit line openings that extend into the semiconductor substrate, the memory device can improve the electrical isolation between memory cells, thereby preventing and/or mitigating TPD.
摘要:
In one embodiment, the present invention relates to a method for pre-treating and etching a dielectric layer in a semiconductor device comprising the steps of: (A) pre-treating one or more exposed portions of a dielectric layer with a plasma in a plasma etching tool to increase removal rate of the one or more exposed portions upon etching; and (B) removing the one or more exposed portions of the dielectric layer in the same plasma etching tool of step (A) via plasma etching.
摘要:
A method of forming a gate for a Fin Field Effect Transistor (FinFET) is provided. The method includes forming a first layer of material over a fin and forming a second layer over the first layer. The second layer includes either Ti or TiN. The method further includes forming a third layer over the second layer. The third layer includes an anti-reflective coating. The method also includes etching the first, second and third layers to form the gate for the FinFET.
摘要:
A process for forming sub-lithographic features in an integrated circuit is disclosed herein. The process includes modifying a photoresist layer after patterning and development but before it is utilized to pattern the underlying layers. The modified photoresist layer has different etch rates in the vertical and horizontal directions. The modified photoresist layer is trimmed with a plasma etch. A feature included in the trimmed photoresist layer has a sub-lithographic lateral dimension.