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120 results about "High density packaging" patented technology

Packaging part with double-row pins and four flat and pin-free surfaces and production method thereof

The invention relates to a packaging part with double-row pins and four flat and pin-free surfaces and a production method thereof. The packaging part comprises a lead frame carrier, an IC chip, a bonding pad, inner lead pins, bonding lines and a plastic packaging body and is characterized in that the inner lead pins are arranged into two rows, i.e. the inner lead pin (4) and the inner lead pin (5), each pair of lead pins are connected together, a groove is arranged in the middle of the connected pins, the bonding pads are respectively connected with the inner lead pin (4) and the inner lead pin (5) through the bonding lines, an anti-spilling groove is arranged at the bottom of the carrier, and grooves are arranged at the bottoms of the inner lead pins. The packaging part is processed and produced through the processes of reduction, scribing, chip installation, press welding, plastic packaging, electroplating, cutting and the like. The carrier is diminished, the inner lead pins are inwards extended and designed into double rows, and the packaged I/O number is increased, thereby not only markedly saving the cost of plastic packaging materials, but also realizing the thin and miniaturized packaging of portable products, being suitable for multi-pin high-density packaging, and improving the packaging density.
Owner:TIANSHUI HUATIAN TECH

Chip-level bottom filling adhesive and preparation method thereof

The invention relates to a chip-level bottom filling adhesive, which comprises following components by weight percentage: 15 to 50 percent of epoxy resin, 1 to 20 percent of toughening agent, 0.1 to 1 percent of dispersing agent, 0.01 to 1 percent of defoaming agent, 0.8 to 10 percent of cross-linking agent, 0.1 to 0.5 percent of pigment, 40 to 70 percent of filler, 3 to 30 percent of curing agent and 1 to 20 percent of diluting agent. A preparation method of the chip-level bottom filling adhesive comprises the steps that the epoxy resin, toughened resin, the dispersing agent, the defoaming agent, the cross-linking agent and the pigment are weighed according to the proportion, thrown into reaction kettle and mixed to form a homogeneous solution; and afterwards, the filler, the curing agent and the diluting agent are weighed according to the proportion, thrown into the reaction kettle in sequence and evenly mixed with the homogeneous solution, and then the chip-level bottom filling adhesive is obtained. The bottom filling adhesive prepared by adopting the method has the characteristics of low curing shrinkage rate, high reliability, and the like, simultaneously satisfies the requirement of low radioactivity and is suitable for primary high-density packaging of memory chips.
Owner:YANTAI DARBOND TECH

Bottom filling glue for packaging inverted chip type semiconductor

The invention discloses bottom filling glue for packaging an inverted chip type semiconductor, which is prepared from the following raw materials in percentage by weight: 5.8-59 percent of liquid epoxy resin, 2-10 percent of rubber toughening agent, 5.8-59 percent of modified organic silicon resin, 0.5-14.8 percent of multifunctional epoxy resin, 1.5-10.5 percent of epoxy diluent, 0.5-14.8 percent of aromatic amine curing agent, 1.1-10.8 percent of silane coupling agent, 20-59 percent of silicon micropowder and 0-6 percent of pigment. The invention has the advantages of low viscosity, proper flow property, no defect, no bubble and good heat resistance of resin condensate, low thermal expansion coefficient, low modulus, small internal stress, less warping degree, high bonding strength, low halogen content and high insulating performance, can maintain favorable bonding reliability and curing performance during thermal cycling treatment and improve the seal performance and the operating performance of the surface of a silicon wafer containing photosensitive polyimide and a silicon nitride film, can be widely used for the technical field of inverted chip packaging and is especially suitable for the field of high-end devices in a Flip-chip process and high-density packaging.
Owner:深圳市库泰克电子材料技术有限公司
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