67results about How to "Reduced alignment accuracy" patented technology

An alignment mark section on a semiconductor substrate has two grooves which are filled with silicon oxide. The surface of the portion of the semiconductor substrate sandwiched by these grooves is lower than other portions of the semiconductor substrate to produce a step having a predetermined depth in the alignment mark section.

The invention provides a color filter, a color filter manufacturing method, a display panel, a display device and a driving method. The color filter comprises multiple colored color resistors and multiple pixel regions, wherein the multiple colored color resistors include the red color resistors, the green color resistors and the blue color resistors, the multiple pixel regions are arranged in a matrix mode, each pixel region comprises a red sub-pixel region, a green sub-pixel region and a blue sub-pixel region, each red sub-pixel region comprises red inferior sub-pixel regions, the number of the red inferior sub-pixel regions of each red sub-pixel region is an even number, one red color resistor is arranged in each red inferior sub-pixel region, each green sub-pixel region comprises green inferior sub-pixel regions, the number of the green inferior sub-pixel regions of each green sub-pixel region is an even number, one green color resistor is arranged in each green inferior sub-pixel region, each blue sub-pixel region comprises blue inferior sub-pixel regions, the number of the blue inferior sub-pixel regions of each blue sub-pixel region is an even number, and one blue color resistor is arranged in each blue inferior sub-pixel region. Compared with the prior art, the manufacturing precision of a mask plate required by the color filter is lowered, the alignment precision is lowered, and the manufacturing difficulty of the color filter is lowered.

The invention relates to an array substrate and a manufacturing method therefor and a display apparatus, and aims to solve the problem of a relatively complex manufacturing process of a TFT substrate, so that an effective mode for reducing photolithography techniques without lowering product yield is needed urgently. The manufacturing method comprises the steps of forming a gate metal layer pattern, a gate insulating layer thin film, an active layer pattern and source and drain metal layer patterns on a substrate; forming a planarization layer thin film, a first electrode layer pattern, a first insulating layer thin film and a photoresist pattern on the source and drain metal layer patterns in sequence; performing a dry etching process on the first insulating layer thin film and the planarization layer thin film in sequence, wherein via holes formed in the first insulating layer thin film, a first shielding electrode and the planarization layer thin film form a first through hole; and forming a second electrode layer pattern which comprises a first bridging electrode on the first insulating layer thin film, and enabling the first bridging electrode to at least fully cover the first through hole region and to be connected with the source and drain metal layer patterns.

The invention provides a mask strip connection method and device as well as a mask plate, belongs to the technical field of display, and aims to solve the problems that the overall mask plate formed by welding mask strips is long in alignment process time consumption and low in alignment precision. According to the mask strip connection method and device as well as the mask plate, the positional deviation of a frame after alignment is taken as first compensation data to compensate for the pixel coordinate basis, so that the difference between the actual position of the mask strip frame and the target position is set within a wider range, the mask strip frame at the level can fall into the threshold range of the alignment precision within a shorter time, the alignment time is greatly reduced, the alignment process is prevented from entering the dead circulation, and the production efficiency is improved while the fixed connection precision of the mask strips of the mask plate is not affected.

Disclosed is a manufacturing method for a source and drain region contact plug of a metal gate transistor. a) for a technology of high K gate dielectric layer last and metal gate first, and in a process of removing a pseudo gate structure and filling in a high K gate dielectric layer, a work function layer and a metal gate, and b) for a technology of high K gate dielectric layer first and metal gate last, and in a process of removing a pseudo gate and filling in a work function layer and a metal gate, an etching barrier layer is formed on the metal gate structure, wherein the two ends of the etching barrier layer are both wider than the metal gate structure. By virtue of the etching barrier layer, even if alignment between a mask plate and a substrate has deviation or even if an opening, corresponding to a through hole, in the mask plate is relatively large, in a photoetching technology of forming a contact through hole in the source and drain regions in a dielectric layer subsequently, the through hole formed by etching does not expose the metal gate due to protection of the etching barrier layer on the covered metal gate structure and dielectric layer below the etching barrier layer; and therefore, a conductive materiel arranged in the through hole in a filling way is not in electrical conduction with the metal gate, so that the yield of a device is improved, the alignment precision between the mask plate and the substrate is lowered, and the requirement on the photoetching fineness is lowered.

The invention discloses a method for testing service life of a friction clutch of a torque backlash type gearshift mechanism. The method comprises the following steps of S1, detaching one or a plurality of members in a low-speed-gear driving tooth, low-speed-gear driven tooth and an overrunning clutch; S2, connecting an input shaft with a driving motor, and locking an output shaft; S3, setting a rotating speed parameter and a highest cycling number-of-times Nmax of the driving motor; S4, setting testing end conditions of a, time ratio of a period in which Tm is smaller than or equal with Tdn_min/i2 in a rotating speed increase period of the driving motor exceeds deltax, wherein Tm is the torque of the driving motor, Tdn_min is a gear shifting-down torque allowable range lower limit value,i2 is a high-speed-gear transmission ratio of the torque backlash type gearshift mechanism, and deltax is a preset value; b, the cycling number-of-times Nx of the driving motor satisfies a condition of Nx=Nmax; and S5, starting the driving motor, and ending testing when a random condition the step S4 is satisfied. The method according to the invention has advantages of simplifying a testing deviceand a testing flow, reducing testing cost, and improving testing efficiency and testing precision.

The embodiment of the invention discloses a display device. The display device comprises a display panel and an image motion unit located at the light emergence side of the display panel; the displaypanel comprises a pixel unit array formed by multiple pixel units, and each pixel unit comprises various sub pixels for giving out light different in color; in the row direction, the light giving colors of the adjacent sub pixels are different; in the line direction, the light giving colors of the adjacent sub pixels are identical; the image motion unit does not move the emergence path of the emergent light ray of a first pixel unit row and is used for moving the emergence path of the emergent light ray of the sub pixels in a second pixel unit row in the row direction by a preset distance, sothat the adjacent sub pixels with three or more different colors form the first pixel unit, one or more of sub pixels and other pixels in the first pixel units are located on different rows, and the sub pixels can give out white light; the first pixel unit row and the second pixel unit row are alternatively arrayed in the line direction. According to the technical scheme, the resolution ratio of the display device can be effectively improved.

The invention discloses an off-axis signal processing method, comprising the following steps: (a) determining a linear fitting model containing direct-current level, sine coefficient and cosine coefficient; (b) conducting off-axis aligning scanning to acquire position sampling signals and light intensity sampling signals; (c) extracting characteristic frequency signals from the light intensity sampling signals and conducting Fourier transform, and calculating values of the sine coefficient and cosine coefficient; and (d) calculating the position sampling signals and light intensity sampling signals according to the values of the sine coefficient and cosine coefficient. According to the invention, the aligning accuracy can not be reduced, and simultaneously the calculation time is greatly reduced, thus the yield is raised.

The invention discloses a double-sided PERC solar cell and a preparation method thereof. The preparation method comprises the following steps of: performing texturing, diffusion, front laser doping, back polishing and etching, back passivation film deposition, back anti-reflection film deposition and front anti-reflection film deposition on a P-type silicon wafer; and printing a back electrode andback grid lines on the back anti-reflection film, printing a front electrode on the front anti-reflection film, and performing sintering and electric injection annealing. The back grid lines are printed by adopting corrosion type aluminum paste, and the corrosion type aluminum paste etches the back anti-reflection film and the back passivation film in the sintering process to form ohmic contact with the silicon wafer. According to the method, the corrosion type aluminum paste is printed on the back surface of the cell, the back anti-reflection film and the passivation film are etched and penetrated during sintering to realize local opening, an existing laser opening process is replaced, good ohmic contact between metal aluminum and a silicon wafer is realized in combination with back surface boron doping, and mechanical damage and fragment rate caused by laser opening are avoided; and the production process is simplified, and the production cost is reduced.

The invention relates to a wireless smooth ring for a rotating mechanism. The wireless smooth ring comprises a mechanical shell with a cylindrical cavity, a signal transmitting mechanism, a signal receiving mechanism, a circuit board and an external connector, wherein the signal transmitting mechanism and the signal receiving mechanism are fixed in the mechanical shell; the signal transmitting mechanism and the signal receiving mechanism are connected with the circuit board through optical fibers; the circuit board comprises a signal transmitting circuit and a signal receiving circuit; the external connector is used for supplying power to the slip ring and transmitting and receiving data; a wireless non-contact laser communication mode is adopted for signal transmitting and receiving. Thebeneficial effects of the invention are that the wireless smooth ring is longer in service life and higher in transmission rate; higher transmission speed and lower processing precision requirements are realized; and the lower assembly requirement and the lower machining requirement are achieved.

The invention discloses a plano-concave laser cavity double-optical-path alignment device and method based on a Gaussian beam, belonging to the field of solid-state laser device laser cavity adjustment. Two optical paths are set to align concave and plane cavity lenses with different refractive characteristics, and a positive focal power lens group with a focal point that coincides with a spherical center of the concave cavity lens is set in a concave cavity lens alignment optical path. For the Gaussian beam, a composite system formed by the lens group and the concave cavity lens is equivalentto a flat plate, so the refractive characteristics of the concave cavity lens are modified, an alignment spot with a similar size with the plane cavity lens is obtained, and the alignment accuracy ofa resonant cavity is improved. For resonant cavities with different concave cavity lens radii, the alignment can be achieved only with the satisfaction of the coincidence of a positive focal power lens group focal point and the spherical center of the concave cavity lens, and the alignment accuracy is stable without degradation.

The invention discloses a heat dissipating module, including a fan and at least one radiator. The fan is provided with a fan frame and an impeller. The fan frame is provided with a body and at least one extending part, wherein the extending part is protrudent from at lease one side of the body. The extending part is used for being connected with a circuit board. The impeller is contained inside the body. The radiator is connected with the extending part and is used for leading out the heat produced by at least one electronic element of the circuit board.