8results about How to "Good barrier" patented technology

The utility model discloses a photovoltaic panel and photovoltaic module are applied to photovoltaic technical field, and photovoltaic panel includes the front glass, cell piece and back glass of laminated arrangement, and the front glass includes: front glass body and first front film layer, and first front film layer is located the side of front glass body close to cell piece, and back glass includes: back glass body and first back film layer, and first back film layer is located the side of back glass body close to cell piece, and first front film layer and / or first back film layer include laminatedly arranged first barrier layer and second barrier layer, and first barrier layer is close to cell piece setting, and the refractive index of first barrier layer is less than the refractive index of second barrier layer. The photovoltaic panel provided by the utility model has the function of increasing the penetration for the light entering the inside of photovoltaic panel, improves the utilization of light energy, has the good blocking effect to the metal ions such as sodium ion, calcium ion from glass, and improves the PID resistance of the photovoltaic panel.

The invention relates to a transfer printing film, an optical element, a head-up display system and a transfer printing method, the transfer printing film is used for transfer printing of the optical element, the transfer printing film comprises a bearing base layer and a shading layer, the bearing base layer comprises a plurality of first areas and a plurality of second areas, the first areas are arranged at intervals in the first direction, and the second areas are arranged at intervals in the second direction. The second areas are arranged between two adjacent first areas, the elasticity modulus of the second areas is smaller than that of the first areas, the shading layer is arranged on the bearing base layer and comprises a plurality of sub-ink areas arranged in the first areas in a one-to-one correspondence mode, and the first direction is parallel to the side face, facing the shading layer, of the bearing base layer. The transfer printing film has a better transfer printing effect, and the optical element transferred by using the transfer printing film has more uniform ink distribution and has a better blocking effect on backward sunlight.

The invention relates to the technical field of semiconductor three-dimensional packaging, in particular to a preparation method of a diffusion barrier layer for three-dimensional packaging, which comprises the following steps: smelting a high-entropy alloy with a face-centered cubic structure; high-entropy alloy is rolled, the total rolling reduction is 80-90%, and annealing and air cooling are conducted at the recrystallization temperature of the high-entropy alloy after rolling; cutting to obtain a high-entropy alloy patch with the thickness of 1-3 microns; melting the solder balls through a ball mounting backflow method, and welding the solder balls with the copper columns to form solder balls; and the high-entropy alloy patch and the solder balls are subjected to hot-pressing bonding under the hot-pressing condition, the temperature of hot-pressing bonding ranges from 250 DEG C to 270 DEG C, the pressure ranges from 200 gf to 300 gf, and the time ranges from 20 min to 30 min. The diffusion barrier layer obtained by the preparation method has a good barrier effect.

The invention belongs to the technical field of traffic engineering, and discloses a road middle guardrail for traffic engineering, which comprises a cross beam and a plurality of longitudinal beams, and further comprises reflective beams arranged between the longitudinal beams in parallel in a staggered manner, reset rods mounted at two ends of the cross beam, and a lifting beam, the lifting beam is fixedly installed at the top end of the reset rod, the two ends of the lifting beam are in sliding connection with middle stand columns of the guardrails, the reflective beam comprises a light-transmitting cover and a rotating column rotationally arranged in the light-transmitting cover, a spiral groove is formed in the top end of the rotating column, and an ejector rod is clamped in the spiral groove in a threaded mode; the ejector rod is elastically connected with the lifting shaft, the lifting shaft is fixedly connected to the bottom of the lifting beam, and when the lifting beam is pressed downwards by external force, the ejector rod is pushed downwards to be spirally coupled with the spiral groove, so that the rotating column rotates. When a pedestrian climbs over the middle guardrail, the habit that the pedestrian is supported on the lifting beam is utilized, so that the lifting beam descends slightly, the rotating column with the light reflecting block is driven to rotate, and a passing driver is prompted to brake or avoid in time.

The faucet comprises a faucet shell, a water outlet nozzle and a water path adapter are arranged in the faucet shell, the water outlet nozzle is provided with a water outlet and a hot water inlet, and the water path adapter is provided with a hot water inlet channel communicated with the hot water inlet. At least partial area of the hot water inlet channel forms a pressurizing cavity, a protruding water retaining part is arranged in the pressurizing cavity, and the water retaining part can form resistance to liquid entering the pressurizing cavity. Hot water enters the pressurizing cavity when passing through the hot water inlet channel, the water retaining part forms resistance to the hot water entering the pressurizing cavity, and the water flow pressure of the instant heating body connected to the upstream of the water path adapter is increased, so that the pressure intensity in the instant heating body is higher than the normal pressure, and the boiling point of water flow in the instant heating body is also higher than the boiling point under the normal pressure; and the boiling point of the water is also increased along with the increase of the pressure, so that the instant heating body can heat the water to be not less than 100 DEG C during heating so as to really boil the hot water.

The invention discloses a semiconductor structure and a corresponding chip and product. The structure comprises a silicon-based integrated circuit and a bump structure arranged on the silicon-based integrated circuit. The bump structure sequentially comprises a UBM layer, a copper conductor layer, a nickel conductor layer and a gold conductor layer. The exposed side walls of the UBM layer, the copper conductor layer and the nickel conductor layer are coated with a metal protection layer composed of palladium, palladium alloy, platinum or platinum alloy, and the protection layer does not cover the gold conductor layer. According to the preparation method, the step-shaped side wall is formed through etching steps in a specific sequence, selective self-growth of the protective layer on the titanium / copper / nickel side wall is achieved through chemical plating based on metal equilibrium potential difference, and the protective layer is not deposited on the gold surface. The problems of poor welding and short circuit caused by oxide generated by side wall oxidation and copper diffusion of the copper-nickel-gold bump are effectively solved, the long-term reliability is remarkably improved, meanwhile, the using amount of precious metal is small, the technology is ingenious, and the method is particularly suitable for the high-end display field of liquid crystal driving chips and the like.

The present invention relates to the field of semiconductor three-dimensional packaging technology, in particular, to a preparation method for a diffusion barrier layer for three-dimensional packaging, which includes: melting a high entropy alloy, the high entropy alloy having a face-centered cubic structure; rolling the high entropy alloy, the total reduction is 80-90%, annealing at the recrystallization temperature of the high entropy alloy after rolling, and air cooling; cutting to obtain a high entropy alloy patch with a thickness of 1-3 μm; melting the tin ball by a ball planting reflow method, and fusing it with a copper column to form a solder ball; hot-pressing the high entropy alloy patch and the solder ball under hot pressing conditions, the temperature of the hot pressing bonding is 250-270 ° C, the pressure is 200-300 gf, and the time is 20-30 min. The diffusion barrier layer obtained by the preparation method has a good barrier effect.

The present invention discloses a device for increasing the safety of rooftop photovoltaics, which belongs to the field of photovoltaic power generation technology. It includes a partition device arranged between the edge of the photovoltaic panel and the roof, and a passage for air circulation is provided between the partition devices on opposite sides. By providing a partition device between the photovoltaic panel and the roof, the oxygen delivery in the flame area is reduced when the building is on fire, the combustion equivalence ratio is reduced, and the flame propagation speed is limited, the chimney effect caused by the restricted space generated by the installation of photovoltaic panels is reduced, and the safety of the building is improved. At the same time, there is a passage for air circulation between the partition devices on opposite sides, which can allow a certain amount of natural wind to enter between the photovoltaic panel and the roof for heat exchange, reduce the surface temperature of the photovoltaic panel, and improve the power generation efficiency.