7results about How to "Improve contact quality" patented technology

The invention provides an epitaxial structure of a gallium nitride thin film and a preparation method, and relates to the technical field of semiconductors, and the epitaxial structure comprises a substrate, a buffer layer, a GaN thin film, an AlGaN barrier layer and an insulating layer which are sequentially laminated; the insulating layer is provided with a plurality of rectangular gate slots, a first source slot and a second source slot. The bottom of the first source slot and the bottom of the second source slot extend to the bottom of the AlGaN barrier layer. The comb-shaped grid is provided with a plurality of rectangular grid roots matched with the rectangular grid root slots; the width of each rectangular gate heel in the longitudinal direction of the epitaxial structure and the distance between the adjacent rectangular gate heels are constrained by the actual intrinsic transconductivity of the epitaxial structure; when a break-over voltage is applied to the comb-shaped grid electrode, the two-dimensional electron gas layer between the multi-contact pin source electrode and the multi-contact pin drain electrode is conducted, a conductive channel is formed, the stability of source electrode access resistance is improved, the non-linear change of the source electrode along with the current or voltage is reduced, and the linearity of the epitaxial structure is further improved.

The present disclosure relates to a kind of laminated, photovoltaic module and photovoltaic system, the laminated includes: cell string, the upper and lower surfaces of cell string are sealed by transparent first encapsulation adhesive film, the outer periphery ring of first encapsulation adhesive film is equipped with second encapsulation adhesive film, the interface of first encapsulation adhesive film and second encapsulation adhesive film exists at the joint, the width L2 of interface satisfies: 0.5mm < L2.Therefore, the contact quality of the interface of first encapsulation adhesive film and second encapsulation adhesive film can be improved, the risk of bubble defect at the interface of first encapsulation adhesive film and second encapsulation adhesive film is reduced, the sealing property, power generation efficiency and the stability of structure of laminated are improved.

This utility model discloses a self-adjusting distributor for a gas-solid fluidized bed reactor, relating to the field of gas-solid fluidized bed technology. It includes a fluidized bed shell installed in a floor, with an exhaust pipe connected to the top of the shell. This application utilizes a gas dispersion rack in conjunction with a flow divider, allowing air to be dispersed by the gas dispersion rack before passing through the distribution plate for gas-solid fluidization. This solves the problem of large velocity differences in the bed cross-section during operation, which can easily lead to flow deviation, in traditional single distribution plates, thereby improving the contact quality between gas and solids. Furthermore, this application uses an annular groove guide channel in conjunction with the distribution plate, allowing personnel to operate a swing handle to swing the distribution plate, causing the limiting block to contact the guide channel and vibrate. This solves the problem that solid particles inside the gas-solid fluidized bed may clog the distribution plate during operation, preventing normal and uniform gas delivery, thus improving the stability of the gas-solid fluidized bed during operation.

This utility model belongs to the technical field of male and female connectors, specifically relating to a high-strength snap-fit ​​male and female connector, including a male connector and a female connector. The male connector includes a first rubber core and a first metal plate, and the female connector includes a second rubber core and a second metal plate. After the male connector is inserted into the female connector, the first metal plate and the second metal plate engage with each other. The surfaces of the first and second rubber cores are each provided with four grooves, and the first and second metal plates are all disposed in the grooves. The first and second metal plates are both concave in the front and convex in the back. This device increases the contact area between the first metal plate 12 and the second metal plate 22 after engagement, enhancing the engagement and ensuring good contact while also extending the service life of the male connector and the female connector.

The utility model discloses a semiconductor structure, which comprises a plurality of active regions arranged on a substrate, a plurality of gate structures extending along a first direction and intersecting with the active regions, and dividing each active region into a middle part and two end parts. The plurality of bit line structures extend across the active region in the second direction and are electrically connected with the middle part of the active region. The bit line structures include a first bit line structure on the outer side and a second bit line structure on the inner side. The first plug structures and the second plug structures are alternately arranged on the outer side of the first bit line structure at intervals in the second direction, the bottoms of the first plug structures are lower than the bottoms of the second plug structures, the contact area between the bottoms of the first plug structures and the ends of the active region is large, and the electric connection quality can be improved.

The invention provides transcranial electrical stimulation equipment, and particularly relates to the technical field of brain-computer interfaces, and the equipment comprises an electrical stimulation electrode array which is used for carrying out transcranial electrical stimulation and electroencephalogram signal collection on a target stimulation object; the electrical stimulation electrode array comprises a plurality of electrodes, and each electrode is provided with an electrode contact; each electrode contact is covered with an interface modification layer, the interface modification layer comprises a first hydrogel layer and a second hydrogel layer which are stacked in sequence, the first hydrogel layer is attached to the electrode contact, and the second hydrogel layer is used for making contact with the target stimulation object; the modulus of the first hydrogel layer is higher than that of the second hydrogel layer; the electrical stimulation control element is connected with the electrical stimulation electrode array and used for controlling current output of the electrical stimulation electrode array according to the electroencephalogram signals collected by the electrical stimulation electrode array. The quality and reliability of the electroencephalogram signals are improved.

This invention discloses a downhole insertion-type long-lasting isolating production combination tool, relating to the field of long-lasting isolator technology. It includes a central tube, with a fixing block fixed at an equal angle on the outer side of the upper end of the central tube. The fixing block is fixed to a connector, and a sealing mechanism for sealing the production pipe is slidably connected to the inner side of the connector. This downhole insertion-type long-lasting isolating production combination tool employs a cleaning mechanism that converts axial gravity into rotational torque through a combination of spirally distributed rollers. When the tool is lowered, the arc-shaped panel adheres tightly to the pipe wall under the thrust of the airbag. The friction between the spiral rollers (30°-60° rise angle) and the pipe wall generates a tangential component force that causes the entire rotating assembly (ring, arc-shaped panel, scraper) to rotate around the central tube. The scraper rotates accordingly, scraping away the circumferential attachments. This process continues throughout the entire lowering stroke, achieving a pretreatment effect on the well wall of the sealing section, significantly improving the contact quality and working life of the subsequent sealing sleeve and metal slips.