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.

There is provided a reversible thermosensitive recording medium including a support, an intermediate layer, and a thermosensitive recording layer which reversibly changes a color thereof depending on a temperature, wherein the thermosensitive recording layer contains an electron-donating coloring compound, and an electron-accepting compound represented by the following general formula 1:

where, n is an integer of 23 or more, and wherein the intermediate layer is disposed between the support and the thermosensitive recording layer, and contains hollow particles having a void ratio of 70% or more, a maximum diameter D100 of 5.0 μm to 10.0 μm, and a ratio D100/D50 of 2.0 to 3.0 where the ratio D100/D50 is a ratio of the maximum diameter D100 to a 50% cumulative particle diameter D50 of the hollow particles.

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.

The invention discloses an outside window cleaning drone for buildings and belongs to the field of drones. The outside window cleaning drone for buildings comprises a drone body, a dust scrubber, and four rotor wings arranged on the periphery of the drone body. The dust scrubber, a negative pressure suction device and a walking device are arranged at the bottom of the drone body. A suction support rod is arranged on a side wall or the top of the drone body, the suction support rod and the negative pressure suction device are connected with a vacuum pump, and the suction support rod is formed by connecting multiple sections of rotating rods capable of rotating left and right. The outside window cleaning drone for buildings allows outside windows of residential buildings or office buildings to be cleaned more conveniently, the windows can be cleaned by directly controlling the drone to fly onto the windows, the cleaning efficiency is high, the cleaning method is safer, the windows are better cleaned, and drone withdrawal is faster. The invention further provides a control method of an outside window cleaning drone for buildings. By means of the control method, the outside window cleaning drone for buildings can be controlled efficiently and safely, the cleaning time is reduced, and the cleaning efficiency is improved.

The invention discloses a method for accelerating the erasing operation of a flash memory, and a system thereof. The method comprises the following steps: erasing the memory block or memory area of the flash memory; and storing the substrate voltage of the memory cell of the memory block or the memory area when the erasing operation ends in a permanent memory arranged corresponding to the memory block or the memory area as a first substrate voltage, wherein the first substrate voltage is an initial substrate voltage of a next erasing operation of the memory block or the memory area. The method and the system can improve the erasing ability of the memory block or the memory area of the flash memory and shorten the erasing time.

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 discloses a snow-and-ice removing device for a high-voltage line. The snow-and-ice removing device comprises a high-voltage line sliding device, a pulling device and a driving device. The high-voltage line sliding device comprises a set of sliding sleeves and a set of snow-and-ice scraping rotating racks. The middle part of each sliding sleeve is provided with a connecting ring. Each connecting ring is connected with a connecting cable. The pulling device comprises a pulling main frame, pulling side frames and a suspension plate. The pulling main frame and the suspension plate are respectively provided with a set of pulleys. The driving device comprises mounting racks and a hoist. The hoist is arranged below the mounting racks. The hoist matches a power cable reel. A power cable winds the power cable reel. A guiding cable is arranged between the mounting racks. The snow-and-ice removing device for the high-voltage line can be remotely controlled. When a heavy snow weather occurs, the snow-and-ice removing device can be remotely started, thereby thoroughly removing snow which residues on the high-voltage line and the ice which is formed through snow melting, ensuring no high-voltage line breakage caused by weight of the snow-and-ice, and reducing faults in electric power transmission.

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.

The invention provides a method for forming a self-aligned common source, which is used in a memory construction and comprises the steps as follows: a plurality of word wires are formed on a substrate, wherein, two sides of each word wire are a source area and a drain area respectively; photoetching is carried out to the source areas to form a photoresist layer, wherein, the photoresist layer covers the drain areas and parts of the word wires; the source areas that are not covered by the photoresist layer are etched so that all the source areas are communicated to form a common source area on which ion implantation is carried out by ion beams to form the self-aligned common source; the direction in which the ion beams are implanted and a normal on the surface of the substrate are separated by a slant angle. In addition, the invention also provides a device for realizing the method. By adopting the technical proposal of the invention, the lateral doping concentration under the boundary of the common source is obviously increased, thus ensuring that under the circumstance that the size of the source area is reduced continuously the resistance of the common source can always be kept at the same level as the common source of large area, and the resistance value of the common source is reduced to a range meeting the requirements.

The invention relates to a split-gate flash memory unit and a preparation method thereof. The preparation method comprises the following steps that: a plurality of flash memory transistors are formedon a semiconductor substrate, wherein each flash memory transistor comprises a floating gate, a storage dielectric layer, a control gate and a sidewall, wherein the floating gate, the storage dielectric layer and the control gate are located on the bottom surface of the semiconductor substrate, and the sidewall is located at one side of the control gate and the storage dielectric layer; a sacrificial oxide layer is formed on the opposite sidewalls and bottom wall of two adjacent flash memory transistors; the sacrificial oxide layer located on the bottom wall is partially removed; a polycrystalline silicon layer is formed on the exposed surface of the semiconductor substrate; and a tunneling oxide layer and a word line polycrystalline layer are formed on the surface of the polycrystalline layer. With the split-gate flash memory unit and the preparation method thereof of the present invention adopted, coupling between word lines and the floating gates can be reduced, erasure performancecan be improved, and leakage current can be reduced.

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 relates to a robot for cleaning a blackboard. The robot comprises a body, a walking mechanism, an erasing mechanism and a control mechanism, wherein the walking mechanism and the erasing mechanism are arranged on the body, and the walking mechanism and the erasing mechanism are connected with the control system. The erasing mechanism comprises a dust accumulating box, a power device, an air duct and a draught fan, wherein the dust accumulating box is movably mounted on the body and provided with a containing cavity used for containing dust; the power device drives the dust accumulating box to move relative to the body; the air duct is arranged on the body and communicates with the containing cavity of the dust accumulating box; and the draught fan is located in the air duct. According to the robot for cleaning the blackboard, the cleaning work of the blackboard is automatically controlled to be completed through the control system; the dust accumulating box has the cleaning function and further can collect dust; the cleaning efficiency of the blackboard is greatly improved; and raise dust is avoided, and environment protection is facilitated.

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.