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Lei Shi

Lei Shi, Beijing CN

Patent application numberDescriptionPublished
20090274063MULTI-LEVEL INTERCONNECTION NETWORK - A method and system for providing a multi-level interconnection network is provided. A multi-level interconnection network comprises basic cells that are aggregated into higher level cells at each level of the network. At the first level, the basic cells are aggregated into first level cells. Each first level cell is an aggregation of a number of basic cells that is one more than the number of devices in a basic cell. The basic cells of a first level cell are fully connected; that is, each basic cell has a first level link or connection to each other basic cell. In a first level cell, each device of a basic cell has a first level link to each other basic cell. The multi-level interconnection network has higher level cells that are aggregations of lower level cells in a similar manner.11-05-2009
20090325690Roaming Saved Game - Various systems and methods are disclosed for a roaming saved game function allowing for location independent access to saved game data. In various embodiments, users may upload saved games when they sign in to an online gaming service, and download them later from another console, PC or other device so that they can continue a saved game wherever they have access to the online gaming service. In one embodiment, users may manage saved game files after signing in to the online gaming service. In other embodiments, the roaming saved game function may provide users with ease of managing their saved games. For example, users may be able to compare two saved games by comparing their level, checkpoint number and screenshot listing. The user may then select one of the saved game files to play and upload.12-31-2009
20090325709Game Clan Matchmaking - Various systems, methods, and computer readable instructions are disclosed herein for a video game clan matchmaking service. In an embodiment, a matchmaking service calculates the weighted skill level of all participating members of a clan, along with the preferences of that clan, to find a well-matched clan. The matchmaking service may collect the skill statistics data of various clans and all their members over a number of game sessions. In one embodiment, the service may calculate the weighted skill level of a clan based on the clan's statistics data and the statistics data of current participating members to determine a weighted skill level. The service may then use this weighted skill level, along with preferences, to match this clan with another clan that has similar skill level and preferences.12-31-2009
20100138211ADAPTIVE WEB MINING OF BILINGUAL LEXICON - Embodiments for the adaptive mining of bilingual lexicon are disclosed. In accordance with one embodiment, the adaptive mining of bilingual lexicon includes retrieving one or more bilingual web pages, wherein each of the bilingual web page including a search term and one or more additional terms. The adaptive mining also includes forming a plurality of candidate translation pairs for each of the terms and extracting one or more translation layout patterns from the plurality of candidate translation pairs. The adaptive mining further includes deriving a term translation in a second language for the search term. The term translation being derived based on a hidden conditional random field (HCRF) model that includes the one or more candidate translations, the one or more translation layout patterns, and one or more additional features. The term translation is further stored in a lexicon repository.06-03-2010
20100286978ALIGNING HIERARCHIAL AND SEQUENTIAL DOCUMENT TREES TO IDENTIFY PARALLEL DATA - A set of candidate parallel pages is identified based on trigger words in one or more pages downloaded from a given network location (such as a website). A set of document trees representing each of the candidate pages are aligned to identify translationally parallel content and hyperlinks. The parallel content is further fed into conventional sentence aligner for parallel sentences. And the parallel hyperlinks usually refer to other parallel documents, and lead to a recursive mining of parallel documents.11-11-2010
20110103262MULTI-LEVEL INTERCONNECTION NETWORK - A method and system for providing a multi-level interconnection network is provided. A multi-level interconnection network comprises basic cells that are aggregated into higher level cells at each level of the network. At the first level, the basic cells are aggregated into first level cells. Each first level cell is an aggregation of a number of basic cells that is one more than the number of devices in a basic cell. The basic cells of a first level cell are fully connected; that is, each basic cell has a first level link or connection to each other basic cell. In a first level cell, each device of a basic cell has a first level link to each other basic cell. The multi-level interconnection network has higher level cells that are aggregations of lower level cells in a similar manner.05-05-2011
20110178792Acquisition Of Out-Of-Vocabulary Translations By Dynamically Learning Extraction Rules - A method and apparatus for identifying a set of bilingual term pairs, and from the set of bilingual term pairs, identifying a set of candidate patterns related to the layout of the bilingual term pairs in the bilingual webpage is provided. From the set of candidate patterns, one or more best patterns can be selected based on features identified in the candidate patterns. Using the one or more selected patterns, a set of translation pair candidates can be extracted. The translation pair candidates can be verified to determine the likelihood that each translation pair candidate is an accurate translation. Based on the verification, some or all of the translation pair candidates can be discarded as incorrect translations, and the remaining translation pair candidates can be identified as correct translation pairs.07-21-2011

Patent applications by Lei Shi, Beijing CN

Lei Shi, Shenzhen CN

Patent application numberDescriptionPublished
20090111430METHOD AND SYSTEM FOR IMPLEMENTING MESSAGING SERVICES AND A MESSAGE APPLICATION SERVER - A method for implementing messaging services includes receiving a message body sent by a calling user, determining whether the calling user and a called user are in the same IP Multimedia Subsystem (IMS) domain according to user registration information, and sending the message body to the called user if the calling user and the called user are in the same IMS domain. An IMS messaging service system includes a Message Application Server (MAS), a Call Session Control Function (CSCF) entity, a calling User Equipment (UE) and a called UE. A MAS includes a user registration information storing unit, a receiving unit, and a determining unit adapted to determine whether the calling user and the called user are in the same IMS domain according to the user registration information stored in the user registration information storing unit when the receiving unit receives the message body from the calling user, and a sending unit. According to embodiments of the present disclosure, when the calling user and the called user are in the same IMS domain, the information interaction process and the message body transmission time may be shortened.04-30-2009
20090129127METHODS AND DEVICES FOR INHIBITING NEGATIVE OUTPUT CURRENT DURING START-UP OF A SWITCH MODE POWER SUPPLY - A method of controlling a freewheel switch during start-up of a switch mode power supply to inhibit negative output current. The switch mode power supply has alternating first and second intervals. The freewheel switch has an ON-time and an OFF-time. The method includes gradually increasing the ON-time of the freewheel switch over a plurality of said intervals during start-up of the switch mode power supply until the ON-time of the freewheel switch is substantially equal to a duration of the second interval.05-21-2009
20110099548METHOD, APPARATUS AND SYSTEM FOR MAKING A DECISION ABOUT VIRTUAL MACHINE MIGRATION - A method, an apparatus, and a system for making a decision about virtual machine migration includes a source host platform, configured to send a migration request to a Migration Authority (MA), and to migrate the virtual machine to a target host platform according to a received migration decision-making result. The MA is configured to perform security checks on the source host platform and the target host platform, to obtain a first evaluation result of the source host platform and a second evaluation result of the target host platform, acquire a third evaluation result of the virtual machine, and return a corresponding migration decision-making result to the source host platform. The corresponding migration decision-making result indicates whether the virtual machine is permitted to be migrated; and the target host platform of the virtual machine to be migrated, is configured to accept the virtual machine to be migrated.04-28-2011

Patent applications by Lei Shi, Shenzhen CN

Lei Shi, Kent, OH US

Patent application numberDescriptionPublished
20090073331TUNABLE LIQUID CRYSTAL DEVICES, DEVICES USING SAME, AND METHODS OF MAKING AND USING SAME - An electro-optical device comprises a liquid crystal material disposed in a cell and electrodes configured to bias the liquid crystal material into a generally in-plane director configuration having a non-constant spatial pattern selectable or adjustable by an in-plane component of the biasing to produce a desired refractive of diffractive optical effect.03-19-2009
20090290078BISTABLE SWITCHABLE LIQUID CRYSTAL WINDOW - A bistable switchable liquid crystal device is provided in which the device can be switched between a transparent and an opaque state by a predetermined voltage pulse. The device is based on polymer stabilized cholesteric materials. No additional amount of voltage has to be applied to the device in order to sustain the optical states. Therefore, the device is energy-saving.11-26-2009
20100051194POLYMER ENHANCED CHOLESTERIC ELECTRO-OPTICAL DEVICES - The present invention provides liquid crystal devices comprised of a composite of an internal polymer network localized on the substrate surfaces and short-pitch dual-frequency switchable cholesteric liquid crystal that operate in two different modes including in-plane switching (amplitude modulation) and out-of-plane switching (phase modulation). The invention further provides a method of making a liquid crystal device demonstrating uniform lying helical axis where the device comprises a composite of an internal spatially ordered polymer network localized by in-situ photo-polymerization at the surface of the substrate. The invention can be used for flat panel displays, as well as spatial light modulators for applications such as optical waveguides, optical beam scanners, computer-generated holograms, and adaptive optics.03-04-2010
20110025955Tunable electro-optic liquid crystal lenses and methods for forming the lenses - Electro-optic lenses, including liquid crystals, wherein the power of the lenses can be modified by application of an electric field. In one embodiment, the liquid crystal-based lenses include ring electrodes having a resistive bridge located between adjacent electrodes, and in a preferred embodiment, input connections for several electrode rings are spaced on the lens. In a further embodiment, liquid crystal-based lenses are provided that can increase optical power through the use of phase resets, wherein in one embodiment, a lens includes ring electrodes on surfaces of the substrates on opposite sides of the liquid crystal cell such that a fixed phase term can be added to each set of electrodes that allows for phase change across each group of electrodes to be the same and also be matched with respect to a previous group.02-03-2011

Patent applications by Lei Shi, Kent, OH US

Lei Shi, Gurnee, IL US

Patent application numberDescriptionPublished
20080255178Azaadamantane Ester and Carbamate Derivatives and Methods of Use Thereof - The invention relates to compounds that are substituted azaadamantane ester and carbamate derivatives, compositions comprising such compounds, and methods of using such compounds and compositions.10-16-2008
20080255179Acetamide and Carboxamide Derivatives of Azaadamantane and Methods of Use Thereof - The invention relates to compounds that are acetamide and carboxamide derivatives of azaadamantane, compositions comprising such compounds, and methods of using such compounds and compositions.10-16-2008
20080262023Aminomethyl Azaadamantane Derivatives and Methods of Use Thereof - The invention relates to compounds that are substituted aminomethyl azaadamantane derivatives, compositions comprising such compounds, and methods of using such compounds and compositions.10-23-2008
20090281118Selective Ligands for the Neuronal Nicotinic Receptors and Uses Thereof - The present application describes selective ligands of formula (I)11-12-2009
20100087471INDOLE AND INDOLINE DERIVATIVES AND METHODS OF USE THEREOF - The present application relates to indole and indoline derivatives of formula (I), (II), (III), (IV), (V), or (VI)04-08-2010
20100249105INDOLE AND INDOLINE DERIVATIVES AND METHODS OF USE THEREOF - The present application relates to indole and indoline derivatives of formula (I), (II), (III), (IV), (V), or (VI)09-30-2010
20100305109POTASSIUM CHANNEL MODULATORS - Disclosed herein are KCNQ potassium channels modulators of formula (I)12-02-2010
20110152248BRIDGEHEAD AMINE RING-FUSED INDOLES AND INDOLINES - The present application relates to indole and indoline derivatives of formula (I), formula (II), formula (III), or formula (IV)06-23-2011
20110152306AZA-BRIDGED RING-FUSED INDOLES AND INDOLINES - The present application relates to indole and indoline derivatives of formula (I)06-23-2011
20110152308AZA-RING FUSED INDOLE AND INDOLINE DERIVATIVES - The present application relates to indole and indoline derivatives of formula (I)06-23-2011

Patent applications by Lei Shi, Gurnee, IL US

Lei Shi, Thousand Oaks, CA US

Patent application numberDescriptionPublished
20100197751COMPOSITIONS OF PEGYLATED SOLUBLE TUMOR NECROSIS FACTOR RECEPTORS AND METHODS OF PREPARING - The present invention provides for improved compositions comprising a PEGsTNF-R1 which, in addition to having useful higher concentrations, demonstrate decreased viscosity (<400 cP) and improved stability.08-05-2010

Lei Shi, Shanghai CN

Patent application numberDescriptionPublished
20080197458Small Outline Package in Which Mosfet and Schottky Diode Being Co-Packaged - The present invention provides a thin small outline package in which MOSPET and Schottky diode being co-packaged, which comprises a electrode S of MOSFET, a electrode 08-21-2008
20090218673Semiconductor package having a bridge plate connection - A semiconductor package is disclosed. The package includes a leadframe having drain, source and gate leads, a semiconductor die coupled to the leadframe, the semiconductor die having a plurality of metalized source areas and a metalized gate area, a patterned source connection having a plurality of dimples formed thereon coupling the source lead to the semiconductor die metalized source areas, a patterned gate connection having a dimple formed thereon coupling the gate lead to the semiconductor die metalized gate area, a semiconductor die drain area coupled to the drain lead, and an encapsulant covering at least a portion of the semiconductor die and drain, source and gate leads.09-03-2009
20090236708SEMICONDUCTOR PACKAGE HAVING A BRIDGED PLATE INTERCONNECTION - A semiconductor package is disclosed. The package includes a leadframe having drain, source and gate leads, and a semiconductor die coupled to the leadframe, the semiconductor die having a plurality of metallized source contacts. A bridged source plate interconnection has a bridge portion, valley portions disposed on either side of the bridge portion, plane portions disposed on either side of the valley portions and the bridge portion, and a connection portion depending from one of the plane portions, the bridged source plate interconnection connecting the source lead with the plurality of metallized source contacts. The bridge portion is disposed in a plane above the plane of the valley portions while the plane portions are disposed in a plane intermediate the plane of the bridge portion and the plane of the valley portions.09-24-2009
20090294934CONDUCTIVE CLIP FOR SEMICONDUCTOR DEVICE PACKAGE - A clip for a semiconductor device package may include two or more separate electrically conductive fingers electrically connected to each other by one or more electrically conductive bridges. A first end of at least finger is adapted for electrical contact with a lead frame. The bridges are adapted to provide electrical connection to a top semiconductor region of a semiconductor device and may also to provide heat dissipation path when a top surface of the fingers is exposed. A semiconductor device package may include the clip along with a semiconductor device and a lead frame. The semiconductor device may have a first and semiconductor regions on top and bottom surfaces respectively. The clip may be electrically connected to the top semiconductor region at the bridges and electrically connected to the lead frame at a first end of at least one of the fingers.12-03-2009
20100072585TOP EXPOSED CLIP WITH WINDOW ARRAY - A clip for a semiconductor device package may include a metal sheet including an array of windows and one or more conductive fingers. Each of the conductive fingers has a first end and a second end. The first end is electrically connected to the metal sheet at one of the windows. Each of the conductive fingers is adapted to provide electrical connection to a top semiconductor region of a semiconductor device or a lead frame at the second end.03-25-2010
20100197927Protein Tyrosine Phosphatase 1B Inhibitor, Preparation Methods and Uses Thereof - PTP1B inhibitors with the following structure (formula I). Experiments indicate that these inhibitors can effectively inhibit the activity of protein tyrosine phosphatase 1B (PTP1B). They can be used as insulin sensitisers. They can be used to prevent, delay or treat diseases which are related to insulin antagonism mediated by PTP1B, especially diabetes type II and obesity. The invention also provides methods for preparing these inhibitors.08-05-2010
20110227205MULTI-LAYER LEAD FRAME PACKAGE AND METHOD OF FABRICATION - The present invention features a lead-frame package, having a first, second, third and fourth electrically conductive structures with a pair of semiconductor dies disposed therebetween defining a stacked structure. The first and second structures are spaced-apart from and in superimposition with the first structure. A semiconductor die is disposed between the first and second structures. The semiconductor die has contacts electrically connected to the first and second structures. A part of the third structure lies in a common plane with a portion of the second structure. The third structure is coupled to the semiconductor die. An additional semiconductor die is attached to one of the first and second structures. The fourth structure is in electrical contact with the additional semiconductor die. A molding compound is disposed to encapsulate a portion of said package with a sub-portion of the molding compound being disposed in the volume.09-22-2011
20110233746Dual-leadframe Multi-chip Package and Method of Manufacture - A dual-leadframe multi-chip package comprises a first leadframe with a first die pad, and a second leadframe with a second die pad; a first chip mounted on the first die pad functioning as a high-side MOSFET and second chip mounted on the second die pad functioning as a low-side MOSFET. The package may further comprises a bypass capacity configured as a third chip mounted on the first die pad or integrated with the first chip. The package may further comprise a three-dimensional connecting plate formed as an integrated structure as the second die pad for electrically connecting a top contact area of the first chip to a bottom contact area of the second chip. A top connecting plate connects a top contact area of the second chip and a top contact area of the third chip to an outer pin of the first leadframe.09-29-2011
20110268803LUNG TARGETING DUAL DRUG DELIVERY SYSTEM - The American Cancer Society estimated that in 2009, 1,479,350 new cancer cases would be diagnosed in the United States of which 219,440 would be lung and bronchus related. The standard treatments for NSCLC include surgery, chemotherapy, radiation, laser and photodynamic therapy, all with various success rates depending on the stage of the cancer. National Cancer Institute assesses, however, that results of standard treatment are generally poor with only a 15 percent 5-year survival rate for combined cancer stages. Challenges facing the current chemotherapy drugs include excessive toxicity to healthy tissues and limited ability to prevent metastases. A dual drug delivery system described herein selectively targets the lung to deliver anti-cancer drugs and inhibit the formation of metastases.11-03-2011

Patent applications by Lei Shi, Shanghai CN

Lei Shi, Shanghal CN

Patent application numberDescriptionPublished
20100133670Top-side Cooled Semiconductor Package with Stacked Interconnection Plates and Method - A top-side cooled semiconductor package with stacked interconnection plate is disclosed. The semiconductor package includes a circuit substrate with terminal leads, a semiconductor die atop the circuit substrate, a low thermal resistance intimate interconnection plate for bonding and interconnecting a top contact area of the semiconductor die with the circuit substrate, a low thermal resistance stacked interconnection plate atop the intimate interconnection plate for top-side cooling, a molding encapsulant for encapsulating the package except for exposing a top surface of the stacked interconnection plate to maintain effective top-side cooling. The top portion of the stacked interconnection plate can include a peripheral overhang above the intimate interconnection plate. The peripheral overhang allows for a maximized exposed top surface area for heat dissipation independent of otherwise areal constraints applicable to the intimate interconnection plate. The stacked interconnection plate can be partially etched or three dimensionally formed to create the peripheral overhang.06-03-2010

Lei Shi, Guangdong CN

Patent application numberDescriptionPublished
20100098495Method for modifying Nomal Clay and a method for Producing Composite Elastomer from the Clay - A method for modifying soil and a method for producing composite Elastomer of the soil are disclosed. The method for modifying soil includes drying, pulverizing, sieving, and purifying the soil to obtain soil powder, then dynamically heating the powder and adding surfactant, which includes coupling agent, polysiloxane having reactive functional, emulsifier of organosilicon and aliphatic amine, and water, and then drying the above obtained powder to obtain modified soil. The modified soil and acrylic acid copolymer emulsion are mixed with plasticizer, foaming agent, etc. to form a composite body which is used to produce elastomer floor board, elastomer wall brick, composite soil skin material, and so on. No emission of toxic gas and evaporation of organic solvent can be attained during production and use of the invention, and performance of the product is same as or has superiority over rubber in compression deformation rate, rebound elasticity and durability.04-22-2010
20110258787JOINT EQUIPMENT AND BOARDING BRIDGE HAVING THE SAME - A joint equipment of a boarding bridge is provided, which is suitable for joining with a downwardly turned boarding gate of the aircraft and comprises a floor frame having a concave notch at its front end; a first floor arranged at the opening of the concave notch; a sliding plate arranged under the first floor and slidable with respect to the first floor through a slide device arranged under the sliding plate; a joining plate rotatablely connected in the front end of the sliding plate; a pair of front cover plates rotatablely connected to the joining plate respectively; a pair of rear cover plates rotatablely connected to the first floor, wherein the front cover plates are partly lapped over the rear cover plates respectively; an activating device for operating sliding movement of the sliding plate; and a pair of turning mechanisms for turning the pairs of the front and the rear cover plates respectively with respect to the joining plate and the first floor.10-27-2011

Lei Shi, Shenzhen City CN

Patent application numberDescriptionPublished
20090319809POWER SUPPLY CIRCUIT FOR CENTRAL PROCESSING UNIT - A power supply circuit for a CPU includes a first control circuit, a switch circuit, an operational amplifying circuit, and a second control circuit. The first control circuit is connected to a BIOS to receive a CPU identification signal. The switch circuit is connected to the first control circuit, and also connected between a CPU and a PSI pin of a VRM. The operational amplifying circuit is connected to the VRM to receive a current monitor signal output from the VRM. The second control circuit is connected to the operational amplifying circuit, the first control circuit and the PSI pin of the VRM. When the CPU identification signal is at a high level and the current monitor signal output from the VRM is lower than a reference voltage of the operational amplifying circuit, the switch circuit turns off, and the operational amplifying circuit outputs a second control signal to make the PSI pin of the VRM grounded.12-24-2009
20100001589POWER SUPPLY CIRCUIT FOR MOTHERBOARD - An exemplary power supply circuit for a motherboard includes a control circuit, a self-locking circuit, and an unlocking circuit. The control circuit is configured for receiving a working mode signal. The self-locking circuit is arranged to receive a power ok signal and a power supply on signal from a power supply, and is connected to the control circuit and a standby power. The unlocking circuit is connected to the control circuit, the self-locking circuit and the standby power, and is also arranged to receive the power ok signal. When the motherboard is placed in an energy-saving mode, the unlocking circuit unlocks the standby power from the motherboard when the computer is turned off to achieve energy savings.01-07-2010
20100090729CIRCUIT FOR CLEARING CMOS INFORMATION - A circuit for clearing complementary metal oxide semiconductor (CMOS) information of a CMOS chip of a computer includes a resistor and an electronic switch. The electronic switch includes a first terminal, a second terminal, and a third terminal. The first terminal is connected to a standby power supply of the computer. The second terminal is connected to a software reset pin of the CMOS chip. The third terminal is connected to a dual power supply of the computer via the resistor, and is connected to a hardware reset pin of the computer. The standby power supply is provided, and the first electronic switch is turned on before the computer is booted up. The software reset pin may be triggered to clear CMOS information of the CMOS chip upon the condition that the hardware reset pin is triggered.04-15-2010

Lei Shi, Kowloon HK

Patent application numberDescriptionPublished
20100033971HEAT-DISSIPATING REFLECTOR FOR LIGHTING DEVICE - A heat-dissipating reflector for a lighting device having a reflecting surface for reflecting light from a light emitting source of the lighting device, and a plurality of ventilation openings formed through the reflecting surface for dissipating heat generated by the light emitting source.02-11-2010

Lei Shi, Radnor, PA US

Patent application numberDescriptionPublished
20100021477DESIGN AND GENERATION OF HUMAN DE NOVO pIX PHAGE DISPLAY LIBRARIES - Described and claimed herein are combinatorial synthetic Fab libraries displayed on a phage pIX protein. The libraries were built on scaffolds representing the most frequently used genes in human antibodies, which were diversified to mirror the variability of natural antibodies. After selection using a diverse panel of proteins, numerous specific and high-affinity Fabs were isolated. By a process called in-line maturation the affinity of some antibodies was improved up to one hundred-fold yielding low pM binders suitable for in vivo use. This work thus demonstrates the feasibility of displaying complex Fab libraries as pIX-fusion proteins for antibody discovery and lays the foundations for studies on the structure-function relationship of antibodies.01-28-2010

Lei Shi, Shanghai CA

Patent application numberDescriptionPublished
20080203548High current semiconductor power device soic package - A high current semiconductor power SOIC package is disclosed. The package includes a relatively thick lead frame formed of a single gauge material having a thickness greater than 8 mils, the lead frame having a plurality of leads and a first lead frame pad, the first lead frame pad including a die soldered thereto; a pair of lead bonding areas being disposed in a same plane of a top surface of the die; large diameter bonding wires connecting the die to the plurality of leads, the bonding wires being aluminum; and a resin body encapsulating the die, bonding wires and at least a portion of the lead frame.08-28-2008

Lei Shi, Songjiang Export Process Zone CN

Patent application numberDescriptionPublished
20110129962ENCAPSULATION METHOD FOR PACKAGING SEMICONDUCTOR COMPONENTS WITH EXTERNAL LEADS - This invention discloses a method for packaging a semiconductor device with leads extending outside its encapsulation. The method comprises the following steps: Step 1, providing a lead frame comprising a plurality of lead frame units arranged in two dimensional array, each lead frame unit comprising a die pad and a plurality of leads located along two opposite sides of the die pad, attaching a semiconductor chip onto the die pad and electrically connecting the electrodes on each chip to its corresponding leads; Step 2, Encapsulating the chips, the die pads, and the leads with molding material into a plurality of one dimensional plastic encapsulation bars with the leads of each lead frame unit extending out along two opposite sides of the plastic encapsulation bars connecting to a plurality of tie bars substantially parallel to the plastic encapsulation bars; Step 3, Trimming off the tie bars therefore cutting off the connections between the leads to the tie bars while preserving a portion of the leads extending out of the plastic encapsulation bars; and Step 4, Sawing through the plastic encapsulation bars to form a plurality of individual semiconductor components with leads extending outside its encapsulation.06-02-2011

Lei Shi, Pittsburgh, PA US

Patent application numberDescriptionPublished
20110279744Short wave infrared multi-conjugate liquid crystal tunable filter - A SWIR hyperspectral imaging filter has serial stages along an optical signal path with angularly distributed birefringent retarders and polarizers. The retarders can include active retarders such as tunable liquid crystal birefringent elements, passive retarders such as fixed retarders, and/or combinations thereof. Distinctly different periodic transmission spectra are provided by different filter stages, each having multiple retarders, in particular with some stages having broad bandpass peaks at wide spectral spacing and other stages have very narrow closely spaced peaks. The respective spectra include at least one tunably selectable band at which the transmission spectra of the filter stages coincide, whereby the salutary narrow bandpass and wide spectral spacing ranges of different stages apply together, resulting in a high finesse wavelength filter suitable for spectral imaging. The filter may be configured to provide faster switching speed and increased angle of acceptance and may operate in the rage of approximately 850-1700 nm.11-17-2011