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96results about How to "Improve bond strength" patented technology

Wafer level chip size package and manufacturing method thereof

The invention discloses a wafer level chip size package and a manufacturing method of the wafer level chip size package, belonging to the field of sensors. The wafer level chip size package comprises a wafer, wherein the positive surface of the wafer is a first surface which forms an image sensing region, the negative surface of the wafer is a second surface, and the first surface comprises a microlens, a metal interconnection layer and an optical interaction region from top to bottom; a silicon through hole which does not penetrate through a silicon substrate and a redistribution region are manufactured on the first surface, and I/Os at the periphery of the optical interaction region are connected with the silicon through hole; the wall of the silicon through hole is manufactured into a passivation layer and is filled; a polymer material is manufactured into a second protective layer on the redistribution region; the first surface is in bonding with a glass sheet, and a cavity is formed between the glass sheet and the wafer; the second surface is thinned and forms a groove structure through an etching process, and the silicon through hole is exposed; a line layer is manufactured on the second surface, and the silicon through hole is connected to a solder pad cushion; a welding prevention layer is manufactured on the line layer, and the solder pad cushion is exposed; and a solder ball is arranged on the solder pad cushion. With the adoption of the wafer level chip size package and the manufacturing method of the wafer level chip size package, the technological process is reduced, the reliability and the production efficiency of a product are improved, and the production cost is lowered.
Owner:BEIJING UNIV OF TECH

Large chip scale package and manufacturing method thereof

The invention provides large chip scale package and a manufacturing method thereof and belongs to the technical field of sensors. An optical interaction region is arranged at the center above a silicon substrate in a first surface of a wafer, one side provided with the optical interaction region is connected with a metal interconnection structure, and an input-output (I/O) around the optical interaction region on the silicon substrate is connected to an electrode pad through the metal interconnection structure. The surface of the metal interconnection structure is provided with a protective layer, and a stepped protrusion or groove structure is formed on the protective layer. The first surface of the wafer is bonded with a glass piece together, and a cavity is formed between the glass piece and the wafer. A second surface of the wafer is provided with a through silicon via (TSV) hole, the electrode pad penetrates through the silicon substrate through the TSV hole to be connected to a bonding pad on the second surface of the wafer, a passivation layer and a metal liner are sequentially manufactured on a hole wall of the TSV hole, and a polymer material is filled into the TSV hole. An anti-welding layer is manufactured on the second surface of the wafer, and a weld ball is manufactured on the bonding pad. By means of the large chip scale package and the manufacturing method, the layering problem of glass and the silicon substrate in an existing package structure is solved, and the packing reliability is improved.
Owner:BEIJING UNIV OF TECH

Polyurethane wrapping basalt fiber wire rope and processing method thereof

The invention relates to a polyurethane wrapping basalt fiber wire rope and a processing method thereof. The polyurethane wrapping basalt fiber wire rope is composed of a basalt fiber core wire and a wrapping layer, wherein a thermal plastic type polyurethane elastomer wrapping layer is arranged on the outer portion of the basalt fiber core wire, and the basalt fiber core wire comprises a single strand wire which is made of basalt fiber untwisted roving in a primary twisted mode or a single core wire which is made of basalt fiber untwisted roving in a secondary twisted mode. The processing method of the polyurethane wrapping basalt fiber wire rope comprises the steps of drying, manufacturing a core wire, wrapping and manufacturing a rope. The polyurethane wrapping basalt fiber wire rope and the processing method thereof resolve the problem that the basalt fibers are very easy to broken in the process of industrial belt manufacture, the wrapping core wire contains thermal plastic type polyurethane elastomer, the wrapping core wire as a tensile resistance framework layer is melted with the thermal plastic type polyurethane elastomer material with body glue, and thus the adhesive strength of a framework rope is strong. The polyurethane wrapping basalt fiber wire rope and the processing method thereof resolve the defect of the poor abrasion resistance of a basalt fiber wire rope, and has good abrasion resistance, oil resistance, water-proof, high strength, low elongation rate, light weight and long service life.
Owner:GUANGDONG TAUGHNESS CONVEYOR BELTING

Reinforced toughened nylon material can be used for 3D printing and preparation method thereof

The invention discloses a reinforced toughened nylon material can be used for 3D printing and a preparation method thereof. The reinforced toughened nylon material is consisted of the following components in percentage by mass: 60%-75% of polyamide 6 (PA6), 10%-20% of glass fiber (GF), 10%-20% of a toughening agent, 4%-8% of a compatibilizer, 0.3%-0.6% of an antioxidant, 0.3%-2% of a coupling agent, and 0.2%-1% of a nucleating agent. The material has the advantages that: 1, the addition of the compatibilizer and the coupling agent remarkably improves the compatibility and the bonding strengthbetween each component, so that the overall performance of the material is obviously improved; 2, the use of a certain diameter long glass fiber reinforcement reduces the shrinkage rate of the material, and improves the serious warpage shortcoming of the material when the material is used for printing; and 3, the addition of the toughening agent solves the shortcoming that the nylon material is lack in toughness after the glass fiber is reinforced, so that consumable printing use is facilitated. Compared with the performance of an existing nylon material, the material prepared in the inventionhas better mechanical properties, higher heat-resistant temperature, and lower molding shrinkage rate, and is not liable to warpage, so that the material is very suitable for preparing FDM-3D printing consumables.
Owner:四川鑫达企业集团有限公司

Liquid crystal display device, manufacturing method thereof and electronic device

The invention provides a liquid crystal display device. The liquid crystal display device comprises a liquid crystal display panel and polarizers, wherein the polarizers and the liquid crystal display panel are arranged in a stacked mode. The polarizers are provided with central areas and peripheral areas in a defined mode, wherein the central areas are located in the middles of the polarizers, and the peripheral areas are located on the peripheries of the central areas. The polarizers are bonded with the liquid crystal display panel, and the adhesive strength of the polarizers and the liquid crystal display panel meets the requirement that the adhesive strength between the peripheral areas and the liquid crystal display panel is higher than the adhesive strength between the central areas and the liquid crystal display panel. The invention further provides a manufacturing method of the liquid crystal display device. According to the liquid crystal display device and the manufacturing method of the liquid crystal display device, the dark state light leakage phenomenon of the liquid crystal display device can be effectively restrained, and the display effect of the liquid crystal display device is improved.
Owner:INNER MONGOLIA ZHONGSEN SMART TERMINAL R & D CO LTD

Structure of integral boron carbide bulletproof plugboard and ceramic pretreatment process

InactiveCN110230952AImprove bond strengthImprove the shedding problemArmour platesCeramicAdhesive
The invention relates to a structure of an integral boron carbide bulletproof plugboard and a ceramic pretreatment process, and belongs to the field of individual soldier human body protection products. The integral boron carbide bulletproof plugboard structure comprises a face packaging layer, a super-strong damping layer, a bulletproof ceramic super-strong constraint body and a bulletproof fiberlaminated board. On the surface of the bulletproof ceramic, a bulletproof fiber filament is adopted for carrying out full-circumference constraint winding, and a bulletproof ceramic super-strong constraint body is formed. The bulletproof ceramic super-strong constraint body and the bulletproof fiber laminated board are bonded by adopting an adhesive, so that the bonding strength of the compositeinterface of the bulletproof ceramic super-strong constraint body and the bulletproof fiber laminated board is ensured. The integral boron carbide bulletproof plugboard obtained by adopting the structure and the ceramic pretreatment process is excellent in anti-foaming bullet attack performance, the integral boron carbide can still keep a whole under the protection of an ultra-strong constraint when being hit by a first gun, a second gun and a third gun are protected with a relatively complete ceramic large block, and finally the problem that the anti-multiple elastic capability of the bulletproof ceramic whole plate is insufficient is solved.
Owner:中硼科技(大连)有限公司

EPDM (ethylene propylene diene monomer) rubber sealing strip compatible with silicone rubber and productive technology thereof

The invention relates to an EPDM (ethylene propylene diene monomer) rubber sealing strip compatible with silicone rubber, which comprises the following components in percentage by weight: 25 to 30 percent of EPDM virgin rubber, 2 to 4 percent of vulcanizing agent, 3 to 5.8 percent of active filler, 35 to 40 percent of carbon black, 2 to 25 percent of softener, 1 to 2 percent of hygroscopic agent and 0.5 to 1 percent of polyethylene glycol, wherein the vulcanizing agent comprises sulphur or DBPMH; and the softener comprises paraffin or paraffin oil. A corresponding performance test carried out according to ASTMC1087 shows that under the condition of the same weighing and using amount of the raw materials, when the DBPMH is used as the vulcanizing agent and the paraffin oil is used as the softener, the compatibility and the ageing resistance are optimal and reach the grade of zero, and the color is not changed. Due to the adoption of the composition proportion and a productive technology of adopting the vulcanizing agent, the softener and peroxide to continuously vulcanize, the compatibility of the EPDM sealing rubber strip with the silicone rubber is good; the bonding strength of a silicone rubber strip and a curtain wall rubber strip to glass is improved and the service life of the EPDM sealing rubber strip is prolonged. Compared with the imported EPDM-S material rubber strip, the cost of the sealing strip of the product is reduced to half of the original cost.
Owner:宁波新安东橡塑制品有限公司

Seam allowance abrasion resisting glue containing short fiber and preparation method thereof

The invention relates to seam allowance abrasion resisting glue containing short fiber and a preparation method thereof. The seam allowance abrasion resisting glue containing the short fiber is characterized by comprising the first step of primary mother mixing, wherein natural rubber, butadiene rubber, carbon black N375 nylon short fiber, an anti-aging agent 4020, zinc oxide, stearic acid and aromatic hydrocarbon oil are sequentially added into an internal mixer to be subjected to banburying, and primary mother glue is obtained; the second step of secondary mother mixing, wherein the primary mother glue is added into the internal mixer to be subjected to banburying, and secondary mother glue is obtained; the third step of final mixing, wherein the secondary mother glue, insoluble sulfur and accelerant DZ are added into the internal mixer to be subjected to final mixing, and the seam allowance abrasion resisting glue is obtained. The seam allowance abrasion resisting glue containing the short fiber and the preparation method are suitable for full-steel radial tire seam allowance glue protection parts, a traditional mixing technology is adopted to a formula for mixing, the nylon short fiber is subjected to phenolic resin latex immersion treatment, and the adhesive strength of the nylon short fiber with rubber is improved.
Owner:JIANGSU GENERAL SCI TECH

Elastomer composite mud absorption rubber tube and manufacturing technique thereof

The invention provides an elastomer composite mud absorption rubber tube and the manufacturing technique thereof. The elastomer composite mud absorption rubber tube mainly comprises a mud absorption rubber tube body, cord fabric, a tightening steel wire, a rubber tube outer layer, a steel ring and a flange steel short sleeve, wherein a middle layer is arranged on the inner surface of the cord fabric, the middle layer is made of canvas, a composite layer is arranged on the inner surface of the middle layer, and the composite layer is made of polyurethane materials or polyurea materials. After a rubber tube blank is manufactured, the cast-molding technique or the centrifugal molding technique or the spray-molding technique is adopted to manufacture the elastomer composite mud absorption rubber tube. According to the elastomer composite mud absorption rubber tube and the manufacturing method thereof, due to the elimination of inner glue existing in a current mud absorption rubber tube, the vulcanizing time of the tube blank is shortened; the middle canvas layer single-face rubber lining technique improves the bonding strength between an elastomer and the cord fabric; due to the fact that specialized supports are designed and used in the centrifugal technique and in the spraying technique, the deformation problem of the tube body in a manufacturing process is solved, and the uniformity of the thickness of the composite layer is guaranteed.
Owner:POWERCHINA MUNICIPAL CONSTR GRP CO LTD

Zirconia surface processing method

The invention discloses a zirconia surface processing method, and belongs to the field of dental repairing technologies. The method comprises the steps that processing treatment is conducted on a dental zirconia block, the dental zirconia block is ground into a zirconia dental crown; the dental crown is dyed by using zirconia dyeing liquid, the dyeing liquid is dried, and sintering processing is conducted on zirconia by using a zirconia crystallizing furnace; the zirconia dental crown is soaked in a surface treatment solution to ensure that the inner and outer surfaces of the dental crown arein contact with the solution, the inner surface of the dental crown is used for bonding to an abutment tooth, and the outer surface is used for porcelain coating or glaze coating; the zirconia dentalcrown on which surface processing is conducted is taken out and washed, and porcelain coating or glaze coating are conducted. By bonding the inner surface of the zirconia dental crown to the abutmenttooth, porcelain coating or glaze coating are conducted on the outer surface after surface acid etching processing is conducted, the bonding intensity between the abutment tooth and between the dentalcrown and the porcelain layer and the glaze layer can be improved, and the appearance and durability of a dental repairing body are improved.
Owner:广州壹凌医疗器械科技有限公司 +1
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