摘要:
A memory array includes a plurality of bit lines and a plurality of word lines, a gate region, and a charge trapping layer. The charge trapping layer is wider than a word line; the charge trapping layer is extended beyond the edge of the gate region to facilitate capturing and removing charges.
摘要:
An electronic device includes a substrate with a semiconducting surface having a plurality of fin-type projections coextending in a first direction through a memory cell region and select gate regions. The electronic device further includes a dielectric isolation material disposed in spaces between the projections. In the electronic device, the dielectric isolation material in the memory cell regions have a height less than a height of the projections in the memory cell regions, and the dielectric isolation material in the select gate regions have a height greater than or equal to than a height of the projections in the select gate regions. The electronic device further includes gate features disposed on the substrate within the memory cell region and the select gate regions over the projections and the dielectric isolation material, where the gate features coextend in a second direction transverse to the first direction.
摘要:
Methods for fabricating a semiconductor memory cell that has a spacer layer are disclosed. A method includes forming a plurality of source/drain regions in a substrate where the plurality of source/drain regions are formed between trenches, forming a first oxide layer above the plurality of source/drain regions and in the trenches, forming a charge storage layer above the oxide layer and separating the charge storage layer in the trenches where a space is formed between separated portions of the charge storage layer. The method further includes forming a spacer layer to fill the space between the separated portions of the charge storage layer and to rise a predetermined distance above the space. A second oxide layer is formed above the charge storage layer and the spacer layer and a polysilicon layer is formed above the second oxide layer.
摘要:
Methods for fabricating a semiconductor memory cell that has a spacer layer are disclosed. A method includes forming a plurality of source/drain regions in a substrate where the plurality of source/drain regions are formed between trenches, forming a first oxide layer above the plurality of source/drain regions and in the trenches, forming a charge storage layer above the oxide layer and separating the charge storage layer in the trenches where a space is formed between separated portions of the charge storage layer. The method further includes forming a spacer layer to fill the space between the separated portions of the charge storage layer and to rise a predetermined distance above the space. A second oxide layer is formed above the charge storage layer and the spacer layer and a polysilicon layer is formed above the second oxide layer.
摘要:
A quick dental implant kit includes a fixture having an upper fine thread portion, a lower coarse thread portion and a diameter gradually reducing in direction from the top side toward the bottom side and exhibiting a long arc-shaped contour, and a drill bit having a shank connectable to and rotatable by a dental handpiece and a stepped cutter body formed integral with the bottom end of the shank and defining a plurality of stepped cutting edges for drilling a stepped hole in a jawbone of a patient for the implant of the fixture. Each stepped cutting edge defines at least five steps and at least four risers alternatively connected in a longitudinal series to fit the long arc-shaped contour of the fixture.
摘要:
A method and apparatus for a flash memory is provided. A NAND flash memory array includes a cell body, a first selective gate, and a first edge line. The cell body includes recessed doped source/drain region between the first selective gate and the first edge word line.