45results about How to "Mass transfer" patented technology

The invention discloses a mass transfer method of Micro LED (Light Emitting Diode) chips, and belongs to the technical field of a semiconductor. The mass transfer method comprises the steps of: producing a plurality of first Micro LED chips, wherein the same sides of P-type electrodes and N-type electrodes of the first Micro LED chips are contrary name magnetic poles; arranging P-type electrode fixing blocks and N-type electrode fixing blocks at positions on a driving circuit board, where the first Micro LED chips are mounted, wherein the opposite sides of the P-type electrode fixing blocks and the P-type electrodes are contrary name magnetic poles, and the opposite sides of the N-type electrode fixing blocks and the N-type electrodes are contrary name magnetic poles; placing the driving circuit board and a plurality of first Micro LED chips into the same solution, and fixedly mounting the first Micro LED chips on the driving circuit board under the action of a magnetic force. The mass transfer method disclosed by the invention can implement mass transfer of the Micro LED chips, and does not have the problem that when one chip has defects, all chips need to be replaced; production efficiency is improved; and production cost is reduced.

The present invention represents a radical departure from most conventional macro-scale batch processing methods employed to synthesize and coat colloidal nanoparticles. Synthesis and coating are in series and in-situ, obviating the need for numerous cumbersome, and often expensive intermediate-processing steps. In one embodiment, the invention is a method and apparatus for synthesizing colloidal nanoparticles. In another embodiment, the invention is a method and apparatus for enabling coating of colloidal nanoparticles using an electrophoretic switch for contacting and separating said colloid nanoparticles.

The invention discloses a mass transfer method of micro LED chips, which comprises the steps of preparing micro LED chips on a growth substrate; equipping a temporary carrier with a sticky surface onone side; placing the chips on the surface of the growth substrate towards the temporary carrier, stripping the chips from the growth substrate and dropping the chips to the surface of the temporary carrier; preparing a stamp with a specific material, wherein the surface of the stamp is provided with regularly arranged bumps, and the surfaces of the bumps are sticky; placing the side with bumps ofthe stamp towards the surface of the temporary carrier, carrying out UV irradiating or heating on the temporary carrier, and enabling the bumps in the stamp to take down the corresponding chips fromthe surface of the temporary carrier; placing the stamp with the chips towards a target substrate, transferring the chips to the surface of the target substrate by means of bonding, and carrying out UV irradiating or heating on the bumps on the stamp so as to remove the stamp; and repeating the steps S2-S6 until the mass transfer of the chips is completed. The mass transfer method is simple and convenient, can achieve the purpose without complex equipment and saves a lot of cost.

The invention described herein concerns microchannel apparatus that contains, within the same device, at least one manifold and multiple connecting microchannels that connect with the manifold. For superior heat or mass flux in the device, the volume of the connecting microchannels should exceed the volume of manifold or manifolds. Methods of conducting unit operations in microchannel devices having simultaneous disrupted and non-disrupted flow through microchannels is also described.

A method for manufacturing a display element comprising a plurality of pixels, each comprising a plurality of sub-pixels. The method comprises undertaking, using a pick up tool, a first placement cycle (1908) comprising picking up a plurality of first, untested LED dies and placing them on a display substrate at locations corresponding to the plurality of pixels, testing (1912) the first LED emitters on the display substrate to determine one or more locations of non-functional first LED emitters, selecting one or more second tested LED dies based on a result of the test, configuring the selected one or more second LED dies to enable their pick up and placement on the display substrate and undertaking, using the PUT, a second placement cycle (2008) comprising picking up the selected one or more second LED dies and placing them on the display substrate at the determined locations of the non-functional first LED emitters.

A bioreactor system for manufacturing and extracting a desired biomaterial from a microorganism by fermenting the microorganism in the bioreactor. The system includes a horizontal reactor vessel, one or more vertical discs rotatably mounted around a hollow shaft, a motor to power the shaft, and one or more spray nozzles arranged to spray required liquids on to the discs. The system is arranged so that the microorganism is not kept submerged within the reactor vessel during the fermentation process. The system is suitable for any type of microorganism, including fungi and bacteria, and can be modified to produce many types of desired biomaterials, including antibiotics, enzymes, ethanol, butanol, chitin, and chitosan. The method of the present invention generally provides steps for placing substrate on the vertical discs of the reactor vessel, inoculating the discs, introducing media, fermenting the microorganism, and extracting the desired biomaterial from the reactor vessel.

The invention provides a microelement capable of being tested and micro-transferred, a manufacturing, testing and transferring method of the microelement and a display device. A first electrode and asecond electrode of a LED chip extend to the surface of a bonding layer corresponding to a groove through the side wall of the LED chip respectively, so that the first electrode and the second electrode are exposed above the groove and play a role in supporting the LED chip in an inverted suspended state. And meanwhile, the first test electrode and the second test electrode can be used for carrying out an electrical test before the LED core particles are transferred, so that the yield screening of the LED core particles is realized, the LED core particles with abnormal electrical properties are prevented from being transferred to the substrate, and the repair cost is further reduced. And then, in a subsequent transfer process, metal of the first electrode and the second electrode exposed above the groove can be used as a chain for mass transfer, an exposed bonding layer is used as an anchor, and the micro-element is positioned to each anchor through transfer equipment, so that mass transfer of the micro-element can be realized.

The invention discloses a whey protein antihypertensive peptide prepared by utilizing a continuous enzyme membrane reactor and a special device thereof. The continuous enzyme membrane reactor provided by the invention comprises a reactive tank (4), an ultrafiltration membrane assembly (5), a circulating system (7), a collecting tank (9) and a feed tank (6), wherein the reactive tank (4) is connected with the ultrafiltration membrane assembly (5) through the circulating system (7), the feed tank (6) is connected with the reactive tank (4) through a pipeline, and a peristaltic pump (10) is arranged on the pipeline. After whey protein is preprocessed through dissolution, hydration and the like, the antihypertensive peptide is prepared in the continuous enzyme membrane reactor by adopting thetechnologies of proteolysis and membrane separation and coupling. The enzyme membrane reactor shows excellent stability in the operating process, and the ultrafiltration amount thereof always keeps more than 90 percent after the enzyme membrane reactor continuously works for 12 hours. The protein recovery rate reaches more than 78 percent, and the highest suppression ratio of an ACE can reach 90.11 percent.

Provided are a gas phase oxidation/decomposition and absorption integrated device and application thereof in a gas-liquid system. The device comprises a housing (100), a motor (102), and a boost regulator (103); the housing (100) is internally provided with a rotating chamber (120) and a discharge chamber (122); the rotating chamber (120) comprises a rotating shaft (119), a turntable (124), a liquid distributor (123), packing layers (110), a guiding round table (111), a liquid inlet (108), a liquid outlet (112), and a first gas outlet (109); the discharge chamber (122) is located under the rotating chamber (120) and comprises a discharge chamber housing (121) and a plasma generator.

A packing system is disclosed that has a series of flat blades arranged to promote mixing in a fluidized bed such as one in a FCC stripper, with an upward flowing gas stream and a downward flowing solid particle stream. The blade arrangement provides for different gas solids flow directions within a single layer of packing system to enhance cross mixing of gas and catalyst in all directions and reduces the potential for gas and catalyst bypassing. The blade arrangement has splits which minimizes the tendency for phase separation around the blade. The arrangement and sizing of the blades is intended to promote intimate contact between the two phases to ensure efficient mass transfer of material trapped inside the particles to the gas phase. The arrangement of the blades prevents excessive bubble growth and channeling, both of which reduce surface area for mass transfer.

An LED transferring method comprises the following steps: providing a receiving substrate and a plurality of LEDs, wherein the receiving substrate is provided with a plurality of receiving areas, eachreceiving area is used for correspondingly receiving one LED, and the two opposite ends of each LED are provided with a first electrode and a second electrode which are opposite in magnetism or magnetic attraction materials respectively; magnetically adsorbing a plurality of LEDs by using the first electromagnetic flat plate, so that each LED is transferred to a first platform after keeping a first electrode upward or a second electrode upward; magnetically adsorbing a plurality of LEDs on the first platform by using a second electromagnetic flat plate, and transferring the LEDs to a second platform after coarse positioning; and adsorbing the plurality of LEDs on the second platform by using a third electromagnetic flat plate, so that the LEDs are correspondingly transferred to the receiving area of the receiving substrate after being finely positioned. The invention further provides a preparation method of an LED display panel.

The invention discloses a method for transferring a large number of MicroLED chips. The method comprises the following steps: providing a substrate, arranging a first metal layer on the surface of thesubstrate,wherein passivated metal is selected as the first metal layer, and the resistivity of the passivated metal is less than or equal to 110 n[Omega].m; arranging a second metal layer on the bottom surface of a MicroLED chip, wherein the second metal layer is made of second metal, and the second metal can adsorb anions after being irradiated by the UV light source; cleaning surface ions ofthe first metal layer through a plasma cleaning machine to enable the first metal layer to carry positive ions; irradiating the second metal layer of the MicroLED chip with ultraviolet light to enablethe second metal layer to carry negative ions; and putting the substrate and the MicroLED chip in non-conductive liquid, and the transferring the MicroLED chip to the substrate through electric ion adsorption. By the adoption of the method for transferring the large number of MicroLED chips, large-scale transfer is achieved, operation is easy, efficiency is high, and positioning is accurate.

The invention belongs to the technical field of semiconductors, and particularly discloses a micro device mass transfer device and method based on differential speed matching of transfer axes, which comprises a microdevice stripping transfer module, a primary transfer shaft module, a secondary transfer shaft module, a substrate bearing module, a microdevice filling module, a curing module, a packaging module and a substrate handling module, wherein the microdevice stripping transfer module is used for stripping and transferring the microdevice to the primary transfer shaft module; The primarytransfer shaft module is used for picking up the microdevices and adjusting the spacing of the microdevices. The secondary transfer shaft module is used for picking up the microdevices on the primarytransfer shaft module and adjusting the spacing of the microdevices; The substrate carrying module is used for picking up the micro devices on the secondary transfer shaft module and sending them intothe micro device filling module, the curing module, the encapsulation module and the substrate handling module to realize filling, curing, encapsulation and loading and unloading. The invention realizes the massive transfer of the micro device by using the differential speed matching of the transfer shaft, which has the advantages of high production efficiency and low production cost.

The present invention provides a spring tube type flexible micro chemical reactor. It comprises a reactor body, a thermal control device, and a gas generating device. The spring tube type flexible micro chemical reactor enhances the heat and mass transfer using the scroll spring tube, which is able to achieve accurate mixing and dynamic adjustment of the heat and mass transfer and is able to effectively solve the problems of blocking of channels by solid reactant, the poor portability of the reaction, etc.

The invention belongs to the related technical field of micro LED mass transfer, and discloses an alignment device and an alignment method for mass transfer of a micro LED through laser assistance, and the device comprises a mask projection assembly which comprises a self-defined mask plate and a mask plate fine adjustment device; the self-defined mask plate is provided with a hollow pattern; the mask plate fine adjustment device comprises a manual rotary table, a Z-direction displacement table and an X-direction displacement table which are connected in sequence; the self-defined mask plate is connected to the end part of the manual turntable; a camera alignment system comprises at least two cameras, a cross wire is arranged in the view center of each camera, and each camera is arranged on the corresponding Y-direction displacement table; and a motion platform system comprises a chip motion module and a drive circuit motion module, and alignment and positioning of a light spot, a chip and a drive circuit are achieved through a cross wire of a camera. According to the invention, accurate calibration and alignment of the laser spot, the chip and the driving circuit can be realized, the structure is simple, and the application value is great.

This invention puts forward a process of preparing butyl rubber. High gravity devices are used as polymerization reactor. The mixture of isomonoolefin and conjugated diolefin monomers and the diluent, and the mixture of the initiator and diluent are pumped at a certain ratio into a high-gravity reactor to conduct cationic polymerization in the high-gravity environment. After polymerization, the monomers and the diluent are removed from the product to obtain butyl rubber polymers with number-average molecular weight of 80000˜300000 and molecular weight distribution index of 1.9˜3.6. The high gravity polymerization method of this invention can tremendously intensify micro-mixing, mass transfer and heat transfer in the reaction. Compared to the conventional stirred polymerization method, this invention features small reactor volume, at least 30-fold shorter residence time of substances in the high gravity reactor, low cost, low energy consumption and high production efficiency.

The invention belongs to the related technical field of semiconductors, and discloses a Micro LED mass transfer self-leveling device and application thereof. The device comprises: a lower wafer motion table which comprises a first support with the freedom degrees in the X direction, the Y direction and the Z direction and a sliding table; an upper wafer moving platform which comprises a second bracket with degrees of freedom in X, Y and Z directions and an adsorption structure; and a substrate direct-driven self-leveling micro holder which comprises a spherical motor and a self-leveling micro holder, wherein the spherical motor is arranged on the sliding table, and the self-leveling micro holder is driven by the spherical motor to rotate or lock in the X, Y or Z direction. The self-leveling micro holder comprises a synchronous adjusting disc and a lower wafer adsorption disc, a plurality of top columns are arranged on the surface of the synchronous adjusting disc, a force sensor is arranged above each top column, and the lower wafer adsorption disc is provided with holes corresponding to the top columns so that the force sensors can protrude out of the surface of the lower wafer adsorption disc. The device is not limited by the area of the transfer head, the parallelism in the large-plane transfer process can be achieved, and the transfer efficiency is remarkably improved.