34results about How to "Improve effective area utilization" patented technology

The invention discloses a phosphorus and boron liquid source one-shot perfect diffusion process. The process is mainly implemented through the following steps that one surface of each silicon wafer with two thinned sides is rotated to be coated with a liquid boron source, baked and then rotated again to be coated with a liquid phosphorus source, lamination is conducted after baking, the silicon wafers are stacked on a silicon boat pairwise to be subjected to one-shot perfect diffusion in the mode that each phosphorus source surface is opposite to the corresponding phosphorus source surface and each boron source surface is opposite to the corresponding boron source surface. Diffused junction depth is even, and reverse breakdown voltage of a product can be stable and good in uniformity; the diffusion concentration gradient is reduced, PN junction field intensity can be effectively improved, discharging-resistant capacity of the product is improved, and the reverse surge capacity of the product can be effectively improved; meanwhile, the source return quantity of the edge of the silicon wafer is small, the number of intra defects is small, and product reliability is high. Processing cost is low, the process is simple, and production is easy.

The invention discloses an interference detection device based on light-splitting synchronous phase shifting and a detection method. The interference detection device belongs to the field of optical interference detection. The invention aims to solve problems of difficulty and complexity in operation and low measurement precision of the conventional optical phase shifting interference detection method. The invention has the scheme that a light beam emitted from a light source is carried out collimation light expansion by a polarizing film and a collimation light expansion system to form a linearly polarized light; the linearly polarized light is divided into an object light beam and a reference light beam after passing through a first polarization light splitting prism; the object light beam and the reference light beam gathered on a second polarization light splitting prism pass through a lambda/4 wave plate, a rectangular window, a first Fourier lens, a one-dimensional period grating, a second Fourier lens, a depolarization light splitting prism and a four-quadrant polarizing film group in sequence; an interference pattern is generated on a plane of an image sensor; the interference pattern obtained by collection is processed by a computer; and phase distribution of an object to be detected is obtained.

The invention provides an orthogonal double-grating based detecting device for synchronous phase shift common-light path interference and a detecting method for the orthogonal double-grating based detecting device, belonging to the field of the detection of optical interference. The invention aims at solving the problem that the existing optical phase shift interference detecting method is complex and hard to operate, and is high in cost and low in measurement precision caused by a high-quality lambda/4 wave plate. The invention has the scheme that a light beam emitted out of a light source is incident into a light receiving surface of a collimating and beam expanding system through a polarizing film, an emergent light beam collimated and expanded by the collimating and beam expanding system is incident into a first lens through two lambda/4 wave plates, an object to be tested and a rectangular window opening, an emergent light beam collected by the first lens is incident into a second lens through the double gratings formed by a one-dimensional cyclic range grating and a one-dimensional cyclic phase shift grating, a diffraction light beam transmitted by the second lens is incident into a four-quadrant polarizing film set, an emergent light beam of the four-quadrant polarizing film set is received by an imaging sensor, and an image signal output end of the imaging sensor is connected with an image input end of a computer, and obtains the phase distribution of the object to be tested.

The invention relates to a honeybee shaped keyboard comprising a panel and keys mounted thereon, wherein the panel has 50-140 keys distributed in the shape of flying honeybees, the width of the keys is 15-19 mm. The keys can be designed to be hexagonal in hornet nest arrangement, the keys can also be circular or square. The keyboard by the invention is easy to use with indefatigability, the effective area utilization ratio is increased, the number of keys is expanded for meeting the needs of keyboard development.

The invention relates to the technical field of clean production, and discloses a clean workshop. The clean workshop comprises a workshop body, and the workshop body is internally provided with a coreclean room, and is provided with a core clean room upper interlayer, a core clean room lower interlayer and a core clean room return airway communicating with the core clean room upper interlayer andthe core clean room lower interlayer; a side span support area is arranged on the side, opposite to the core clean room, of the core clean room return airway, the side span support area is internallyprovided with a side span clean room and is provided with a side span clean room upper interlayer located at the top of the side span clean room and a side span clean room lower interlayer located atthe bottom of the side span clean room; and the side span clean room upper interlayer and the side span clean room lower interlayer separately communicate with the core clean room return airway, and/or, a side span clean room return airway for communicating with the side span clean room upper interlayer and the side span clean room lower interlayer is arranged between the side, away from the coreclean room, of the side span clean room and a wall of the workshop body.

The invention relates to a method for building an environmental-friendly and comfortable house. In the method, a foundation, beams with the shape like a Chinese character tu, an L-shaped beam, the beams of a staircase and house pillars are built by reinforced concrete, and the floor slabs of floors, the floor slab of a top floor and walls are built by glass. The house built by using the method is environment-friendly, healthy, resource saving, comfortable and natural, and has the advantages of compact structure, light weight, simple construction, high removing and recovering rate, obvious economic and social benefits and extensive application in real estate industry.

The invention relates to a catalyst for preparing styrene through ethylbenzene dehydrogenation and a preparation method of the catalyst and mainly solves the problems that in the prior art, the utilization of the effective outer surface of the catalyst is not full, and the catalyst reaction activity is low because of high resistance drop of a catalyst bed layer. In a Fe-K-Ce-Mo (W)-Mg-Ca basic catalyst system, the forming technology is utilized for producing quatrefoil striped catalysts. Through the technical scheme, the problems are perfectly solved, and the catalyst can be used in the industrial production of styrene.

The invention discloses an implantable infusion port. The implantable infusion port comprises a port body, a liquid storage cavity formed in the port body, a connecting pipe used for fixing a catheterand the port body and an injection piece fixedly arranged on the port body, wherein the liquid storage cavity is provided with a first opening and a second opening; the minimum caliber of the first opening is larger than the maximum caliber of the second opening; the injection piece is fixed into the first opening; the catheter communicates with the second opening; and the first opening is obliquely formed. The implantable infusion port has the advantages that the overall height of the infusion port in the implantation part of a patient is reduced, the pulling force of the infusion port on the skin of the patient is reduced, and the pain and foreign body sensation of the patient are reduced; in cooperation with a linear type non-injury needle, medical staff can operate and use the implantable infusion port conveniently, the effective area utilization rate of a puncture window is increased, the operation complexity is reduced, and the occurrence rate of postoperative mechanical phlebitis is reduced; and the occurrence rate of avascular necrosis caused by postoperative skin tension deficiency is reduced.

The invention provides a sanitary absorption article and a preparation method thereof. The sanitary absorption article comprises an elastic breathable part and a replaceable absorption core body; fixing parts are arranged on the two sides of the elastic breathable part; the replaceable absorption core body is fixed on the elastic breathable part through the fixing parts; the replaceable absorption core body comprises a liquid-permeable surface layer, an absorber and a bottom film which are sequentially arranged from top to bottom; the absorber is a non-rubber core body; the replaceable absorption core body further comprises a wrapping layer; the absorber is wrapped in the wrapping layer. The sanitary absorption article prepared by the method has the characteristics of good air permeability, good dryness, large liquid absorption amount and environmental protection.

The invention relates to a catalyst for preparing styrene by ethylbenzene dehydrogenation and a preparing method thereof, which aims at solving the problems of the prior art that the bed resistance drop of the catalyst is high due to low compressive strength and poor chalk resistance performance, and the reaction activity of the catalyst is low. Aiming at well solving the problems, the catalyst and the method adopt the technical scheme that a catalyzing system containing Fe-K-Ce-Mo(W) is adopted, and a catalyst of which the axial periphery is provided with a spiral pattern or a circular groove pattern different in width, depth and shape is produced. The catalyst and the method can be used for the industrial production of the styrene.