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147 results about "Structure formation" patented technology

In physical cosmology, structure formation is the formation of galaxies, galaxy clusters and larger structures from small early density fluctuations. The universe, as is now known from observations of the cosmic microwave background radiation, began in a hot, dense, nearly uniform state approximately 13.8 billion years ago. However, looking in the sky today, we see structures on all scales, from stars and planets to galaxies and, on still larger scales, galaxy clusters and sheet-like structures of galaxies separated by enormous voids containing few galaxies. Structure formation attempts to model how these structures formed by gravitational instability of small early density ripples.

NAND memory structure, NAND memory structure formation method and three dimensional memory array

The invention discloses an NAND memory structure formation method. The formation method comprises the following steps of providing a semiconductor substrate, and forming multiple groups of source electrode selection transistors in the substrate; forming a storage unit of a vertical laminated structure on the source electrode selection transistors, wherein the storage unit of the vertical laminated structure comprises a vertical channel, a multi-layer storage gate medium, and a bit line selection tube grid and a laminated word line formed outside the vertical channel, and drain electrodes of the source electrode selection transistors are contacted with the multi-layer storage gate medium on the bottom of the vertical channel; and forming a bit line on the storage unit of the vertical laminated structure; and applying breakdown voltage to the multi-layer storage gate medium between the drain electrodes of the source electrode selection transistors and the vertical channel through the bit line and the laminated word line. The NAND memory structure formation method can reduce the process difficulty and the cost and improve the integration density. The invention also discloses an NAND memory structure and a formation method thereof and a three dimensional memory array.
Owner:TSINGHUA UNIV

Material with hard coating film formed on substrate surface thereof

There is provided a hard-coated material in which a substrate thereof is coated with a hard coating film that is excellent in wear resistance and also excellent in film removability to allow easy removal thereof once damaged or worn for the purpose of recycled use of the substrate. The hard coating film formed on the substrate comprises a layer-A and a layer-B; wherein the layer-A has a component composition represented by the formula TivM1-v(CxNyOz) (where M denotes at least one species selected from predetermined elements, and the variables v, x, y, and z indicate predetermined ratios of the respective elements); and wherein the layer-B has a component composition represented by the formula TivCrwM1-v-w(CxNyOz) (where M denotes at least one species selected from predetermined elements, and the variables v, w, x, y, and z indicate predetermined ratios of the respective elements). The layer-A and the layer-B are laminated alternately in succession. In terms of lamination units each corresponding to a combination of a singularity of the layer-A disposed at the lower level and a singularity of the layer-B disposed at the upper level, at least two lamination units are provided in laminated structure formation. The ratio in thickness of a singularity of the layer-B to a singularity of the layer-A is at least 2. The thickness of a singularity of the layer-A is within the range of 0.1 to 3 μm both inclusive, the thickness of a singularity of the layer-B is within the range of 1 to 10 μm both inclusive, and the total thickness of a plurality of the layers-B is at least 5 μm.
Owner:KOBE STEEL LTD

Enhanced methods for at least partial in situ release of sacrificial material from cavities or channels and/or sealing of etching holes during fabrication of multi-layer microscale or millimeter-scale complex three-dimensional structures

Embodiments of the invention are directed to multi-layer, multi-material fabrication methods (e.g. electrochemical fabrication methods) which provide improved versatility in producing complex microdevices and in particular in removing sacrificial material from passages, channels, or cavities that are complex or that include etching access ports in their final configurations that are small relative to passage, channel, or cavity lengths. Embodiments of the present invention provide for removal of sacrificial material from these passages, channels or cavities using one or more initial or preliminary removal steps that occur prior to completion of the such passages that results from the completion of the layer forming steps. In some embodiments, first sacrificial material is replaced after a secondary solid sacrificial material after the initial removal step or steps. In other embodiments, the first sacrificial material is replaced after a liquid material after the initial removal step or steps. In some embodiments, desired structure formation may occur along or separately from one or more etchant directing manifolds that can force etchant into the passages, channels, and cavities.
Owner:MICROFAB

Image sensor adopting deep groove isolation and manufacturing method thereof

The invention provides an image sensor adopting deep groove isolation and a manufacturing method thereof. The method at least comprises the following steps that a substrate is provided; an isolation structure of an isolation pixel unit is formed on the substrate; an epitaxial monocrystalline silicon layer covering the isolation structure is formed in a selective epitaxy mode; partial devices of the image sensor are formed in the epitaxial monocrystalline silicon layer. The deep groove isolation structure is formed before an image sensor device is formed, the isolation structure has better surface shape and fewer defects, in addition, the restoration can be carried out through the epitaxy high-temperature process, and the influence of defects is further eliminated, so that the interface of the isolation structure is more excellent, and the deep groove isolation structure is formed before the device is made, so the selectivity of process means and environment is wider, the damage to the device does not need to be considered, the epitaxial monocrystalline silicon layer is used for forming the device grows after the isolation structure formation, the condition that no stress is conducted into a silicon device is ensured through a high-temperature manufacture procedure, and the performance of the image sensor device is ensured.
Owner:GALAXYCORE SHANGHAI
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