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 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.

The invention provides a low-precision inertial navigation initial alignment method based on a quaternion CKF. The low-precision inertial navigation initial alignment method comprises the following steps: carrying out coarse alignment by utilizing measured values of an accelerometer and a magnetometer to obtain a coarse attitude matrix; taking a position and a speed error as value measurement by using accurate outside information provided by a GPS (Global Position System); carrying out nonlinear filtering by the quaternion CKF to obtain an attitude error matrix; and finally, correcting by using the attitude error matrix to obtain an accurate attitude matrix. According to the low-precision inertial navigation initial alignment method, the value measurement of the gravitational acceleration and the magnetic force, which is carried out by the accelerometer and the magnetometer, is subjected to the coarse alignment. The problems that the gyroscope performance is low under the condition of a low-precision inertial device, the rotation angle speed of the earth can not be accurately sensed and a traditional coarse alignment method can not be applied are solved; furthermore, the quaternion CKF provided by the method can be used for a non-linear model of a large angle error, can still finish alignment under the condition of a large orientation misalignment angle and has high alignment precision.

The present application discloses a display panel, a manufacturing method thereof, and a display device. The display panel includes an array substrate and a driver. The array substrate includes a display part and a binding part. The binding part includes a plurality of binding electrodes arranged at intervals. The component includes a driving part, the driving part is provided with a plurality of driving electrodes arranged at intervals, and the plurality of binding electrodes include a first high-voltage electrode group and a second high-voltage electrode group adjacently arranged, and the first high-voltage electrode group includes at least Two first high-voltage electrodes, the second high-voltage electrode group includes at least two second high-voltage electrodes spaced apart, one of the two adjacent driving electrodes is crimped and fixed with the corresponding at least two first high-voltage electrodes, and the other It is crimped and fixed to at least two corresponding second high-voltage electrodes, and the distance between the two driving electrodes is greater than the distance between the first high-voltage electrode group and the second high-voltage electrode group. The display panel of the technical solution of the present application can improve the problem of short-circuit burn caused by voltage bias.

The invention discloses a smokeless coaling device of a top-charging coke oven. The smokeless coaling device comprises a flashboard device, and a coal charging sleeve, wherein the flashboard device is arranged at the upper part of the coal charging sleeve. The smokeless coaling device is characterized in that a built-in flashboard device is arranged inside the flashboard device; the coal charging sleeve comprises an upper sleeve, a fixed sleeve, a movable sleeve, a sleeve sealing device, and a fire hole sealing device; a fire hole sealing base matched with the fire hole sealing device is arranged on the plane of the fire hole; an outer sleeve capable of axially stretching is also arranged; the outer sleeve is sleeved outside the fire hole sealing device; the upper end of the outer sleeve is connected with the movable sleeve; a work surface butted with the plane of the fire hole is formed at the lower end of the outer sleeve; a drive device guide rack is arranged at the side of the coal charging sleeve; and a movable sleeve drive device for driving the movable sleeve to axially move up and down and an outer sleeve drive device for driving the outer sleeve to axially stretch are connected with the drive device guide rack. By adopting the device, effective sealing of the fire hole of the coal charging furnace is achieved, a raw coke oven gas generated in the coal charging process enters a gas collecting pipe system through an ascend pipe, and the air quantity requirements on a dust removal system also can be reduced.

A highly stable carbon dioxide laser that is cooled by recirculation. The carbon dioxide laser comprises a gas storage tube (1), a water cooling tube (2) and a discharge tube (3) sequentially sleeved one over the other from the outside inward; the two ends of the gas storage tube (1) are respectively provided with a reflective lens (4) and an output lens (5); the gas storage tube (1) is provided with a water inlet tube (7) and a water outlet tube (6) connected to the water cooling tube (2); the water cooling tube (2) is a double-layer structure comprising an inner-layer water cooling tube (8) connected to an outer-layer water cooling tube (9); the water inlet tube (7) and the water outlet tube (6) are respectively connected to the inner-layer water cooling tube (8) and the outer-layer water cooling tube (9); the water inlet tube (7) and the water outlet tube (6) are disposed at the same end of the water cooling tube (2). The deformation of the water inlet tube (7) and the water outlet tube (6) has reduced impact on the cylindricity of the gas storage tube (1), thus allowing use of a constant temperature device with low constant temperature precision to reduce costs, or even to eliminate the constant temperature device and further reduce costs.

The invention discloses a large-size construction equipment telescopic supporting leg convenient to insert and extract. The large-size construction equipment telescopic supporting leg comprises a pin shaft assembly, an outer telescopic joint and an inner telescopic joint. The outer telescopic joint and the inner telescopic joint are nested mutually to form a supporting leg body. The pin shaft assembly comprises a pin shaft and a handle arranged at the end of the pin shaft. The outer telescopic joint is provided with outer pin shaft holes for allowing the pin shaft to penetrate through. The inner telescopic joint is provided with inner pin shaft holes and a guide cylinder which are used for allowing the pin shaft to penetrate through. A pin shaft supporting device is further arranged at the outer pin shaft holes and is hollow pipeline. The pin shaft is arranged in the hollow pipeline of the supporting device. According to the large-size construction equipment telescopic supporting leg convenient to insert and extract, compared with the prior art, when needing to be inserted and extracted, the pin shaft only needs to be pulled and pushed in the pin shaft supporting device and the pin shaft holes and does not need to be manually lifted up to be inserted and extracted, and the labor intensity is relieved.

The invention relates to a solar battery string, comprising more than two cells serially connected in stack form, where each cell includes an aluminum back field, a back passivated layer, a polysilicon substrate, a positive passivated layer, an antireflective film, positive silver fingers and a positive silver electrode which are arranged sequentially from bottom to top; in two cells serially connected in stack manner, the positive silver electrode of the front cell is connected with the aluminum back field of the rear cell via conductive glue; in the cells serially connected in stack manner,a busbar is connected with the aluminum back field of the first cell via conductive glue, and a busbar is connected or directly welded to the positive silver electrode of the last cell via conductiveglue. The solar battery string herein has the advantages that the usage of back silver paste can be decreased, the silkscreen printing process is simplified, and the material cost is low; the back silver electrodes are omitted while the conducting capacity is equivalent to that of the string having the back silver electrodes; conductive connection is reliable and stable; the passivated area of thealuminum back field is enlarged, so that photon utilization efficiency is improved; in addition, the requirement on aligning precision of the stack process is lowered; gaps among the modules are utilized, and the cells that can be added under the same area are 13% and above more than those in conventional modules.