2996results about How to "Reduce process steps" patented technology

The invention discloses a method for preparing a solar cell by using a local area back field, which comprises the following steps of: selecting a silicon chip and making the silicon chip into a soft silicon chip, then performing boron or phosphorus dispersion, cleaning a boron-silicon glass layer or a phosphorus-silicon glass layer left on the surface of the silicon chip after the dispersion, depositing a silicon nitride film on the front of the silicon chip by using PECVD, polishing the back of the silicon chip by using hot alkali liquid, and depositing a passive film, performing laser perforation and sputtering an aluminum layer on the polished back; and finally, screen-printing a silver electrode on the front of the silicon chip, and sintering, testing and separating the silicon chip. The method avoids the problem of current leakage caused by lamination during etching; the PECVD process adopted by the passive film on the back is more suitable for large-scale production; the adoption of the back laser perforation improves the manufacturing speed, reduces the process step and avoids pollution brought by corrosive slurry; and the Al layer can be well sintered and contacted with the silicon through pores so that the contact area of the metal and the back surface silicon is smaller and the current carrier compounding rate of the back surface is reduced.

The invention discloses a thin film transistor (TFT) array substrate, which comprises grid lines and data lines, the grid lines and the data lines are formed on the substrate. The grid lines and the data lines cross to define sub-pixel units. Each sub-pixel unit comprises a thin film transistor device, a public electrode, a first pixel electrode layer and a second pixel electrode layer. The first pixel electrode layers or the second pixel electrode layers are connected with public electrodes, and the other ones are connected with source electrodes or drain electrodes of the thin film transistors, the first pixel electrode layers and the second pixel electrode layers are separated through insulation layers, and the second pixel electrode layers are arranged above the first pixel electrode layers. Images of strip pixel electrodes of the second pixel electrode layers are overlapped with images of the first pixel electrode layers, an inclined angle is arranged between the strip pixel electrodes and liquid crystal initial orientation, and the grid lines are parallel to the strip pixel electrodes close to the grid lines or the data lines are parallel to the strip pixel electrodes close to the data lines. The TFT array substrate and the display device guarantee that a liquid crystal orientation chaos phenomenon caused by effects of disorder electric fields at a pixel edge can not occur.

The invention relates to a TiAl intermetallic compound-based solid seif-lubricating composite material which comprises Ti3SiC2, Ti2AlC and C which are used as the ternary composite lubricating phase and TiC which is used as the reinforced phase, and a preparation method thereof. The TiAl intermetallic compound-based solid seif-lubricating composite material is characterized in that the material is prepared from Ti powder, Al powder, Cr powder, Nb powder, B powder and Ti3SiC2 powder, wherein the molar ratio of Ti, Al, Cr, Nb and B is 48:47:2:2:1 and the dosage of the Ti3SiC2 powder is 5-20wt.% of the total weight of the Ti powder, Al powder, Cr powder, Nb powder and B powder. The TiAl / Ti3SiC2-Ti2AlC-C / TiC intermetallic compound-based solid seif-lubricating composite material synthesized by the method is novel in component design (the intermetallic compound matrix, the composite lubricating phase and the reinforced phase), high in density, good in tribological properties, stable in technological parameters, fast and simple in preparation process and easy in operation and the method is suitable to be used to prepare the high performance TiAl intermetallic compound-based solid seif-lubricating composite material.

This invention discloses a sort of liquid crystal display that the chromatic film is above the thin film transistor, and it consists of the nether baseboard, the grating line, the grating pole, the thin film transistor is formed above the grating pole, the data wire, the power pole which connects with the data wire and the corresponding leakage pole are formed above the thin film transistor, the deactivation protective foil is formed above the channel of the thin film transistor, and it has the bore in the part which is corresponds to the leakage pole, the black matrix is formed above the deactivation protective foil, and it has the bore in that bore position, the hatch of the black matrix corresponds to the picture element area, the chromatic filter layer is formed in the hatch of the black matrix, a picture element pole is formed above the chromatic filter layer, and it connects with the leakage pole by the bore, the upper baseboard, the common pole which is formed above the nether baseboard, a liquid molecule layer is formed between the upper baseboard and the nether baseboard. This invention discloses the manufacturing method of this crystal display at the same time. This invention advances the penetrant rate and the hatch rate of the liquid crystal display, and it predigests the technique.

The invention relates to the field of steel rolling machinery, in particular to a roller and a production process for the roller which is made of W6Mo5Cr4V2 high speed steel; the production process comprises the following steps: a. material preparation; b. the processing of two end faces of blanks; c. the processing of central holes of two ends; d. the processing of rough turn; e. the drilling of hoisting holes outside the length of finished products; f. carrying out quenching and tempering treatment to cause the roller hardness to reach 40 to 50 HSD; g. the modification of the central holes of the two ends; h. the processing of half finish turning; i. coarse grinding of the roller body; j. carrying out quenching and tempering treatment to lead the surface of the roller body to reach the quenching hardness of 88 to 93 HSD; k. the processing of the lengths of the two ends to required sizes; l. the processing of finish turning; m. the coarse grinding of the roller body and a roller neck; n. stress relief treatment; o. the repairing of the central holes of the two ends; p. fine grinding of the roller body and the roller neck; q. super grinding of the roller body and the roller neck to finished products. The roller and the production process thereof solves the problem of big size, high production cost, tedious process and great production difficulty of rollers which are produced with conventional materials.

The invention belongs to the technical field of display, and particularly relates to a color film substrate, a display panel and a display device, wherein the color film substrate comprises a conducting layer positioned at the color film side of the color film substrate; an isolation belt used for isolating external static electricity is arranged on the periphery of the conducting layer; a notch is formed in the isolation belt; extending parts used for outputting static electricity are arranged on the inner side conducting layer on the inner sides of the isolation belt; the extending parts extend to the edge of the color film substrate through the notch. According to the color film substrate, the display panel and the display device, the conducting layer and the isolation belt are arranged at the color film side of the color film substrate, so that the problem in the prior art of static electricity accumulation due to external static electricity's entry into the display device through an ITO thin film prone to mechanical damage is effectively solved.

The present invention provides a backside illuminated CMOS image sensor, comprising: a semiconductor substrate having a first surface and a second surface opposite thereto; the semiconductor substrate includes at least one pixel unit region; an isolation structure located at Between adjacent pixel unit regions; wherein, the isolation structure is a deep trench isolation structure, and the deep trench isolation structure penetrates the first surface and the second surface of the semiconductor substrate. The invention reduces the crosstalk of electrical signals between adjacent pixel unit areas, improves the display fading of CMOS image sensors, and improves the imaging quality.

This invention discloses a sort of liquid crystal display that the thin film is above the chromatic film, and it consists of the nether baseboard, the black matrix which is formed under the nether baseboard, the chromatic filter layer which is formed in the hatch of the black matrix and corresponds to the picture element area, the over protective film which is formed above the chromatic filter layer and the black matrix, the grating line and the grating pole which is formed above the over protective film, the thin film transistor which is formed in the grating pole, the data wire and the power pole and the leakage pole are formed above the thin film transistor, the deactivation protective layer which is formed above the area of the leakage and the other exceptant part of the picture element area, the picture element pole which is formed above the picture element area and the over protective film, and it contacts with the part of the leakage pole, the upper baseboard, the common electric pole which is formed above the upper baseboard, the liquid crystal molecular layer which is formed between the upper baseboard and the nether baseboard. This invention advances the penetrant rate and the hatch rate of the liquid crystal display, and it predigests the technique.

The invention discloses a biological degreaser for degreasing pretreatment in metal processing industry and method for processing greasy dirt on metal surfaces, which integrates the two independent processes of grease removing and greasy dirt decomposing, the biological degreaser containing oil-degraded microorganisms can not only scale off greasy dirt from metal surfaces, but also decompose the greasy dirt simultaneously.

The invention relates to a completely degradable polymer medicine elution stent and a preparation method thereof. The stent is prepared from the following steps: 1) processing and forming a degradable polymer material into a pipe; 2) subjecting the pipe to laser engraving to form a stent substrate; 3) polishing the surface of the degradable polymer stent substrate and removing processing defects on the surface of the stent; and 4) forming a medicine carrier coating on the surface of the degradable polymer stent substrate. In the invention, a novel light source is used for implementing the laser engraving of the pipe and the processing defects on the surface of the stent is polished by using a polishing technique, so the obtained stent has high structural stability and can has high mechanical supporting performance; and compared with the conventional method, the method has obvious advantages, the prepared stent has high biocompatibility, can effectively treat diseases such as intravascular stenosis and thrombus, has high positive remodeling effect on blood vessels and can effectively prevent a restenosis in later implanting period of the stent.

The present invention relates to a multi-stack amorphous silicon solar battery, which adds a transparent reflection film between the stacks and belongs to the thin film solar battery making field. The present inventionhas the technical characteristics that the transparent conductive film between two stacked photoelectric conversion layers is coated on the N face of one amorphous silicon P-I-N photoelectric conversion layer, while the middle transparent conductive film is made of nanometer conductive material. Moreover, a photoelectric unit consists of a stacked amorphous silicon solar battery, and the P film of the amorphous silicon P-I-N photoelectric conversion layer forms a top battery on the back of the front electrode in a roll coating manner. The present inventionis applicable to the mass production, reducing the cost.

The invention relates to a fingerprint identification apparatus with a concealed protection member and an electronic apparatus with the fingerprint identification apparatus. The fingerprint identification apparatus comprises a button, a fingerprint sensor which is arranged in a lower portion in the design direction of a button vertical lamination structure, a cover comprising a button hole accommodating the button and a fingerprint sensor positioned below the button and a protection member arranged on below the cover plate or on the side walls of the button hole. The protection member is arranged below the upper surface of the cover plate in a hidden mode. The protection member circes around the surrounding of the fingerprint sensor in order to shield interferences to the fingerprint sensor by outside noise signals. The electronic apparatus with the above fingerprint identification apparatus comprises a housing and a display assembly. The cover plate is embedded in an upper plate of the housing. The display assembly is a display module group or a touch control display module group. The fingerprint sensor is positioned outside of an imaging area of the display assembly.

The invention discloses a composite ceramic membrane for lithium ion batteries and a preparation method thereof, including a ceramic coating modification method and a ceramic lithium battery membrane. The ceramic protective layer is mainly prepared from a ceramic-adhesive mixture subjected to graft modification by a sodium-sulfonate / sodium-carboxylate-group-containing anionic surfactant. The grafting is completed by using a grafting-on process under the action of a coupling agent; the grafting ratio of the ceramic is higher; the high-temperature-resistant large-surface-area nano ceramic is introduced to the conventional PP (polypropylene) membrane surface, the insulativity and electrolyte wettability of the modified ceramic membrane are greatly enhanced; and the membrane has excellent high-temperature heat stability especially at the high temperature of 130 DEG C, 150 DEG C and 180 DEG C. The lithium battery composite membrane avoids the thermal shrinkage of the convention membrane, thereby avoids the thermorunaway in the battery due to thermal shrinkage, and further enhancing the safe reliability of the lithium ion battery.

A multi-layer flexible circuit board comprises a plurality of conductive circuit layers and a plurality of insulation layers, wherein the insulation layer is arranged between adjacent conductive circuit layers, a plurality of first-order blind holes and a plurality of second-order blind holes are formed in the multi-layer flexible circuit board, the first-order blind holes are filled with first-order conductive posts, the second-order blind holes are filled with second-order conductive posts, the first-order conductive posts and the second-order conductive posts are matched to make the plurality of conductive circuit layers electrically connected, the plurality of conductive circuit layers comprise a first external conductive circuit layer, a second external conductive circuit layer and a plurality of internal conductive circuit layers, the plurality of second-order blind holes comprise a first second-order blind hole, the first second-order blind hole is filled with a first second-order conductive post, the plurality of internal conductive circuit layers comprise a first internal conductive circuit layer, a second internal conductive circuit layer and a third internal conductive circuit layer which are adjacent to one another, and the first internal conductive circuit layer, the second internal conductive circuit layer and the third internal conductive circuit layer are electrically connected by the first second-order conductive post. Moreover, the invention also provides a fabrication method of the multi-layer flexible circuit board.