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 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 concentratively controlled multimedia teaching system with an electric blackboard as one main part includes one electrically driven blackboard capable of erasing automatically, one projecting screen, one projector with suspended lens, one teacher's operating desk, and one concentrative control keyboard with blackboard switch, projector switch, computer switch, power switch, with all the control lines and power lines being hidden in floorboard and wall. The present invention makes it possible for the teacher to complete electric audio-visual teaching operation easily.

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.

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 a hard coating composition having antifouling performance for a hard coating surface. The fingerprints, sebum, human grease such as sweat, and cosmetics are difficult to be obvious even when attached to the hard coating surface. And the dirt has excellent erasure performance even when attached to the hard coating surface. The hard coating composition having antifouling performance comprises following components used as main ingredients: (A) hard coating material, (B) fluorinated acrylate compound, (C) acrylate compound containing perfluoropolyether.

The present invention provides a nonwoven fabric which is suitable as a wiper that is indented for human use and that is to be used in cleansing or beautifying the skin. The nonwoven fabric combines a high absorbing and holding power for a liquid such as water or a medicinal solution and a high desorbing power therefor, has excellent bulkiness and softness, is agreeable to the touch and lowly irritant to the skin, and exhibits excellent wiping-off properties. A nonwoven fabric made of a blend which comprises 20 to 80 mass% of a polyester-based fiber having a flat multi-lobed cross section and 20 to 80 mass% of a cellulose-based fiber, wherein the cross section of the polyester-based fiber has an oblate shape which has at least six lobes on the circumference and which satisfies a specified oblateness and a specified degree of modification.

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).

The present invention provides a method for erasing a visible watermark of a document image. The method comprises: carrying out binaryzation preprocessing on a target image to obtain a feature image; determining watermark areas and non-watermark areas of the target image and the feature image; respectively partitioning the non-watermark areas of the target image and the feature image into a plurality of overlapped blocks and carrying out sampling on each block; constructing a sparse representation model; optimizing the constructed sparse representation model by utilizing a dictionary learning method so as to obtain a compressed target image block dictionary and a feature image block dictionary; and according to the similarity matching degree of the two dictionaries, erasing the visible watermark in the target image by adopting a dictionary similar block erasing algorithm or a local erasing algorithm in a self-adaptive mode. According to the method, the visible watermark of the document image can be effectively erased; moreover, context semantic readability of background texts in an original watermark area can be kept; and the original background texts can be recovered to the greatest degree.

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.

　A fingerprint-resistant anti-reflection film having a hard coat layer, a high-refractive-index layer, and a low-refractive-index layer laminated in the stated order on one side of a transparent base film. The refractive index of the high-refractive-index layer is 1.50-1.65, and the film thickness thereof is 130-180 nm. The refractive index of the low-refractive-index layer is 1.36-1.42, and the film thickness thereof is 70-100 nm. The minimum reflectance wavelength (λ(min)) in a wavelength range of 350-850 nm is 350-530 nm, and the wavelength (λ(bend)) at the bending point in the wavelength range of 350-850 nm satisfies the relationship λ(min) < λ(bend). Furthermore, the luminous reflectance of the fingerprint-resistant anti-reflection film is 2.0% or lower, the reflection chroma (C) is less than 6.0, and the reflection color difference (△Ｅ) before and after adhesion of sebum soil is less than 7.0.

The present invention provides a nonvolatile memory having a plurality of memory banks having a plurality of erasable and programmable nonvolatile memory cells and capable of memory operation independently respectively. The nonvolatile memory is capable of sequentially receiving write data and a write start command by the number of write processing regions after a write instruction command, a write start address and the number of the write processing regions with the write start address as a start point are inputted, latching write data for one write processing region in one memory bank and thereafter starting writing to each memory cell in response to the write start command, and making parallel a latch operation at one memory bank and writing to each memory cell at other memory banks.

A semiconductor structure includes a semiconductor substrate; a tunneling layer on the semiconductor substrate; a source region adjacent the tunneling layer; and a floating gate on the tunneling layer. The floating gate comprises a first edge having an upper portion and a lower portion, wherein the lower portion is recessed from the upper portion. The semiconductor structure further includes a blocking layer on the floating gate, wherein the blocking layer has a first edge facing a same direction as the first edge of the floating gate.

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 provides a vector graph operating method applied to a webpage. The vector graph operating method applied to the webpage comprises the following steps that operation to drawing tools or erasing tools in a webpage drawing board by a user is responded, and a drawing state or an erasing state is triggered; when the drawing state is triggered, the operation positions of the drawing tools are obtained based on the flash technology, drawing traces of the drawing tools are recorded, and vector graphs are drawn; when the erasing state is triggered, drawn graphs are cached in a bitmap mode, the operation positions of the erasing tools are obtained based on the flash technology, erasing traces of the erasing tools are recorded, and bitmap graphs are erased. Correspondingly, the invention further provides a vector graph operating method applied to the webpage. The vector graph operating method and device applied to the webpage can effectively achieve drawing of the vector graphs and erasing in the pixel level, and improve graphic operation experience of the user.

The invention provides a method for manufacturing a flash memory device. When a sidewall of a gate stack layer is formed, a first protective layer is formed on a side wall of the sidewall; and the protective layer and the sidewall are etching-selective in a process of removing the sidewall in a word line region; in this way, when the sidewall in the word line region is removed, the protective layer can protect the sidewall of an erase gate region from being removed, and the sidewall of the erase gate region is a mask when a floating gate is formed. The protective layer can reduce or avoid damage to the mask forming the floating gate, thereby improving the uniformity of the formed floating gate, improving the erasing efficiency of the flash memory device and improving the performance of theflash memory device.

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 discloses an erasing method and device of a memory unit. The method comprises the steps as follows: receiving an erasing instruction; determining the current erasing voltage according tothe current temperature of a memory chip; applying the current erasing voltage to the memory unit of the memory chip. According to the erasing method of the memory unit, by means of the technical means that the current erasing voltage is determined according to the current temperature of the memory chip and current erasing voltage is applied to the memory unit of the memory chip, the problem thatthe erasing speed at the low temperature decreases is solved, the problem of over-erasure caused by ultrahigh erasing speed at the high temperature is solved, and the erasing performance is improved.

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.

The invention discloses a red ink capable of developing for multiple times and a decoloring agent thereof. The red ink comprises, by weight, 0.1-1% of pigments, 0.01-0.1% of a regulator, 0.01-3% of adispersing agent, 0.01-1% of a connecting material, 0.2-5% of a plasticizer, 0.001-2% of a preservative, 0.2-5% of ethanol and 82.9-99.469% of distilled water. The ink has the advantages that the effect of color restoration can be achieved, and the effect can achieve the effect of periodically reminding in daily life.