141results about How to "Improve erase effect" patented technology

Vertical contraposed pair of floating grid and control grid is formed at side opposite to source diffusion zone in substrate. Erasing grid is formed between above source diffusion zone and contraposed grid. Selecting grid is formed is formed at side opposite to contraposed grid and erasing grid. Programming channel is extended from intermediate channel region on substrate to peripheral part of the selecting grid faced to the floating grid. Erasing channel is extended from peripheral part of the erasing grid faced to the floating grid to the source diffusion zone and the erasing grid. In some instances, the source diffusion zone is connected to the erasing grid electrically. In other instances, the floating grid stands out one or two sides of the control grid laterally. Comparing with prior art, the invention provides better programming and erasing performances with very small size of storage cell.

The invention provides a method and a device for erasing script, and is characterized in that the script is divided into more than one lines, and the determination of the existence of a line in the lines which goes cross an erasing area is taken as a basis on which the decision about whether the script goes cross the erasing area can be made. In the scheme provided by the invention, to find out whether the script crosses the erasing area is converted into the detection about whether the lines following the division of the script cross the erasing area, and if one of the lines goes cross the erasing area, the decision can be made that the script goes cross the erasing area. As only part of the lines of the script need to verified, all that is needed is to verify whether the line crosses the erasing area, and the amount of calculation is correspondingly reduced, so that the script erasing speed is effectively increased, and the script erasing performance is improved. Meanwhile, as not all the points comprising the script are required to be searched and verified, the occupancy of a CPU and the consumption of resources are reduced during the process of erasure.

The embodiment of the invention provides a flash memory unit for a shared source line and a forming method thereof. The provided flash memory unit for the shared source line comprises a semiconductor substrate, a source line, a floating gate dielectric layer, a floating gate, a control gate dielectric layer, a control gate, side wall dielectric layers, side walls, a tunneling oxide layer, a word line, a drain electrode and a source electrode, wherein the source line is positioned on the surface of the semiconductor substrate; the floating gate dielectric layer, the floating gate, the control gate dielectric layer and the control gate are sequentially positioned on the surface of the semiconductor substrate on two sides of the source line; the side wall dielectric layers are positioned between the source line and the floating gate as well we between the source line and the control gate; the side walls are positioned on the floating gate and the control gate, which are far from the source line; the tunneling oxide layer is adjacent to the side wall and is positioned on the surface of the semiconductor substrate; the word line is positioned on the surface of the tunneling oxide layer; the drain electrode is positioned in the semiconductor substrate at one side of the word line, which is far from the source line; the source electrode is positioned in the semiconductor substrate which is right opposite to the source line; and the floating gate is provided with a p-type doping end which is close to the source line, wherein the doping type of the floating gate is in a p type and the doping type of other parts is respectively in an n type.

The invention provides an erasable bluish dark writing liquid. The writing liquid mainly comprises the following components: alpha-naphtholphthalein, phenolphthalein, sodium hydroxide, ethanol, formaldehyde, a thickener, a surfactant and distilled water. The writing liquid is prepared by a complementary color principle, and has no toxicity, no penetrating odor and no corrosion. The writing liquid can not only be applied to a teaching board but also be applied to water-color brushes for children. The preparation process is simple and the writing liquid has convenient use. The writing liquid can be erased by water solution, and is a writing liquid without environmental pollution and harm to human bodies.

Provided is a cleaning sheet which excellently captures dust and dirt. The cleaning sheet is composed of a base material sheet (2), and a cleaning surface forming sheet (3) bonded to the base material sheet (2). A slacked section (5) of the cleaning surface forming sheet (2) is formed between the bonding sections (6, 6) where the base material sheet (2) and the cleaning surface forming sheet (3) are bonded to each other, and many cuts (7) for capturing dust and dirt are formed on the slacked section (5).

A cleaning tool and a method of manufacturing the cleaning part of the cleaning tool. The cleaning tool capable of sufficiently developing cleaning capacity even for cleaning in a small space comprises the cleaning part (1) and a grip part (2). The method of manufacturing the cleaning part (1) comprises the steps of forming a bulky section forming part (3) by bending a sheet stacked body having an adhered part formed by adhering a sheet-like fiber bundle (7) to a sheet along the adhered part, bending the sheet stacked body having the bulky section forming part (3) formed thereon to face the bulky section forming part (3), and forming the contact surfaces of the opposed sheet-like fiber bundles (7) integrally with each other so that these contact surfaces are adhered to each other. Opened grip insert ports (4) are formed at one end of the bulky section forming part (3), and the support bars (5) of the grip part (2) are inserted into grip insert parts (6) formed in the bulky section forming part (3).

The invention provides a stationery eraser and a preparation method thereof. The stationery eraser comprises the following components by weight: 40 to 45 parts of a thermoplastic elastomer, 12 to 16 parts of a functional inorganic filling material, 10 to 20 parts of a plasticizer, 1 to 3 parts of polyolefin resin and 1 to 5 parts of a softening agent. The stationery eraser provided by the invention has the advantages of soft texture, high self-lubricating properties, good erasing effect, safety, no pollution, etc.

The invention relates to the technical field of semiconductor manufacturing, in particular to a three-dimensional memory and a manufacturing method thereof. The three-dimensional memory comprises a substrate, a storage string and an isolation layer, wherein the substrate is provided with a stacking structure and a channel hole which penetrates through the stacking structure in a direction perpendicular to the substrate; the storage string is located in the channel hole and comprises a blocking layer, a charge trapping layer, a tunneling layer and a channel layer which are sequentially stackedon the surface of the channel hole in the radial direction of the channel hole; and the isolation layer is positioned between the side end surface of the bottom of the charge trapping layer and the channel layer, and is used for blocking the migration of electrons between the charge trapping layer and the channel layer. According to the three-dimensional memory, direct contact between the channellayer and the charge trapping layer is avoided, the migration of charges between the channel layer and the charge trapping layer is blocked, and the writing and erasing performance of the three-dimensional memory can be effectively improved.

An island-in-sea fiber wherein two or more kinds of island components (4, 5), said island components having different cross sections and showing a difference in degree of irregularity of 0.2 or greater, are present on a fiber cross-section, characterized in that at least one type (4) of the island components has a degree of irregularity of 1.2-5.0 and a dispersion in the degree of irregularity of 1.0-10.0%. A combined filament yarn that is obtained by removing a sea component (6) from the aforementioned island-in-sea fiber, and a textile product comprising at least the island-in-sea fiber or the combined filament yarn. Provided is a raw yarn for a combined filament yarn for manufacturing a cloth that has good tension, good drape and excellent color-developing properties, said raw yarn being an island-in-sea fiber comprising two or more kinds of polymers wherein island components and a sea component surrounding the island components are present on a fiber cross-section in a direction perpendicular to the fiber axis.

The invention provides a plastic eraser comprising a vinyl chloride resin as a base resin and a combination of 4,5-epoxy-1,2-cyclohexanedicarboxylic acid bis(2-ethylhexyl) and diethylene glycol dibenzoate as plasticizers, wherein the plastic eraser comprises the base resin in an amount of 25-60% by weight, and the combination of plasticizers in an amount of 30-60% by weight, and wherein the proportion of the diethylene glycol dibenzoate in the combination of plasticizers is 5-60% by weight, and wherein the plastic eraser has a hardness in the range of 55-75, and a gel hardness in the range of 3.0-6.0 kgf.

The invention provides a split gate flash memory and a forming method thereof. The forming method of the split gate flash memory includes that: a first media layer and a floating gate layer are sequentially formed on a substrate; a discrete second media layer is formed on the floating gate layer, and an area where the second media layer is located is a word line area; first side walls are formed around the second media layer, and areas between adjacent first side walls are source electrode line areas; the floating gate layer and the first media layer are etched to the substrate by using the first side walls as masks; source electrode lines are formed on the source electrode line areas; a floating gate and a floating gate media layer are formed by removing the second media layer, and the floating gate layer and the first media layer under the second media layer; a third media layer is formed on a floating gate side wall below the top tip of the floating gate which is adjacent to the word line area; a tunneling media layer is formed to cover the substrate, the third media layer, the floating gate, the first side walls and the surfaces of the source electrode lines; and word lines are formed on the tunneling media layer of the word line area. By using the forming method, erasure performance is improved, voltage applied on the word lines is reduced, and power consumption is saved.