Patents by Inventor Wei-Chung Chang

Wei-Chung Chang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190150263
    Abstract: A target droplet source for an extreme ultraviolet (EUV) source includes a droplet generator configured to generate target droplets of a given material. The droplet generator includes a nozzle configured to supply the target droplets in a space enclosed by a chamber. The target droplet source further includes a sleeve disposed in the chamber distal to the nozzle. The sleeve is configured to provide a path for the target droplets in the chamber.
    Type: Application
    Filed: February 27, 2018
    Publication date: May 16, 2019
    Inventors: Wei-Chih LAI, Han-Lung CHANG, Chi YANG, Shang-Chieh CHIEN, Bo-Tsun LIU, Li-Jui CHEN, Po-Chung CHENG
  • Publication number: 20190150266
    Abstract: A droplet generator for an extreme ultraviolet imaging tool includes a reservoir for a molten metal, and a nozzle having a first end connected to the reservoir and a second opposing end where molten metal droplets emerge from the nozzle. A gas inlet is connected to the nozzle, and an isolation valve is at the second end of the nozzle configured to seal the nozzle droplet generator from the ambient.
    Type: Application
    Filed: November 1, 2018
    Publication date: May 16, 2019
    Inventors: Wei-Chih LAI, Han-Lung CHANG, Bo-Tsun LIU, Li-Jui CHEN, Po-Chung CHENG
  • Publication number: 20190150262
    Abstract: A method of controlling an excitation laser includes detecting, at a droplet generator, a first signal of radiation scattered by a given target droplet irradiated by a first radiation source at a first position. The method of controlling the excitation laser further includes detecting, at the droplet generator, a second signal of radiation scattered by the given target droplet irradiated by a second radiation source at a second position a fixed distance away from the first position, and determining a speed of the given target droplet based on a time lag between the detecting of the first signal and the detecting of the second signal. The method further includes controlling a trigger time for triggering an excitation pulse for heating the given target droplet based on the determined speed of the given target droplet.
    Type: Application
    Filed: February 27, 2018
    Publication date: May 16, 2019
    Inventors: Wei-Chih LAI, Han-Lung CHANG, Bo-Tsun LIU, Li-Jui CHEN, Po-Chung CHENG
  • Publication number: 20190139898
    Abstract: A chip package structure includes a plurality of first chips, a plurality of first conductive pillars, a second chip, a plurality of second conductive pillars, an encapsulated material and a redistribution structure. Each first chip has a first active surface. Each of the first conductive pillars is disposed on the first active surface of the corresponding first chip. A second active surface of the second chip is electrically connected to the first active surfaces of the first chips through the second conductive pillars. The encapsulated material partially covers the first chips, the first conductive pillars, the second chip and the second conductive pillars. The redistribution structure is disposed on the encapsulated material and connects the first conductive pillars. A chip package structure array is also provided.
    Type: Application
    Filed: December 14, 2017
    Publication date: May 9, 2019
    Applicant: Shanghai Zhaoxin Semiconductor Co., Ltd.
    Inventors: Wen-Yuan Chang, Yeh-Chi Hsu, Hsueh-Chung Shelton Lu, Wei-Cheng Chen
  • Publication number: 20190139952
    Abstract: A chip packaging method includes followings steps. A plurality of first chips are disposed on a carrier, wherein each of the first chips has a first active surface, and a plurality of first conductive pillars are disposed on the first active surface. A second active surface of a second chip is electrically connected to the first active surfaces of the first chips through a plurality of second conductive pillars. An encapsulated material is formed, wherein the encapsulated material covers the plurality of first chips, the plurality of first conductive pillars, the second chip and the plurality of second conductive pillars. The encapsulated material is partially removed to expose each of the plurality of first conductive pillars. A redistribution structure is formed on the encapsulated material, wherein the redistribution structure connects with the first conductive pillars.
    Type: Application
    Filed: December 14, 2017
    Publication date: May 9, 2019
    Applicant: Shanghai Zhaoxin Semiconductor Co., Ltd.
    Inventors: Wen-Yuan Chang, Yeh-Chi Hsu, Hsueh-Chung Shelton Lu, Wei-Cheng Chen
  • Publication number: 20190062161
    Abstract: Halogen-doped phosphorous nanoparticles and a manufacturing method thereof are provided. The manufacturing method includes a mixing process and a centrifugation or filtration process. The mixing process has the step of mixing a precursor with a reducing agent solution to form a mixed solution, the precursor is a halogen-based phosphide. Then, the mixed solution is centrifuged or filtrated to obtain the halogen-doped phosphorous nanoparticles.
    Type: Application
    Filed: January 9, 2018
    Publication date: February 28, 2019
    Inventors: Wei-Chung CHANG, Kuan-Wei TSENG, Hsing-Yu TUAN
  • Patent number: 10182114
    Abstract: A media content sharing method is provided which includes receiving a query message including query information associated with a media content from a client device, determining whether a storage unit contains a target description file including at least a segment information including characteristics corresponding to the query information, whereby the storage unit stores a plurality of description files uploaded from a plurality of content providing devices, and transmitting a request message to a first content providing device which uploads the target description file, for requesting the first content providing device to provide a target media segment.
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: January 15, 2019
    Assignee: NOVATEK Microelectronics Corp.
    Inventor: Wei-Chung Chang
  • Patent number: 10152491
    Abstract: A file searching method for searching an original image file in an image processing device is provided, wherein the original image file includes a plurality of original image fragments and each of the plurality of original image fragments includes a plurality of key values. The file searching method includes receiving at least one searching condition; obtaining at least one corresponding key value among the plurality of key values according to the at least one searching condition; and searching at least one searching image fragment among the plurality of original image fragments meeting the at least one searching condition.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: December 11, 2018
    Assignee: NOVATEK Microelectronics Corp.
    Inventor: Wei-Chung Chang
  • Publication number: 20180326101
    Abstract: A compound represented by formula (I) is provided, wherein in formula (I), R1 and R2 each independently represents hydrogen, O—R3 or S—R4, at least one of R1 and R2 is O—R3 or S—R4, and R3 and R4 are independently a C1 to C10 alkyl group, such that the C1 to C10 alkyl group is non-substituted or substituted with at least one selected from the group consisting of —OH, —NH2, halogen, ester, ether, and carboxylic acid, and M being a metal or a metal-containing compound. The compound represented by formula (I) is shown to have higher specificity to tumor cells, and is therefore suitable for carrying anti-cancer drugs and/or nuclear imaging agents.
    Type: Application
    Filed: May 11, 2017
    Publication date: November 15, 2018
    Applicant: SeeCure Taiwan Co., Ltd.
    Inventors: Ning Tsao, Wei-Chung Chang
  • Publication number: 20180264125
    Abstract: A glycopeptide composition including a plurality of glycopeptides and a therapeutic agent or diagnostic compound is provided. Each of the glycopeptide includes a polysaccharide moiety connected to a peptide moiety, and the polysaccharide moiety is covalently bounded to the peptide moiety via a fixed connection point, wherein the fixed connection point is the same in each of the glycopeptide, and the therapeutic agent or diagnostic is conjugated to each of the glycopeptide.
    Type: Application
    Filed: February 12, 2018
    Publication date: September 20, 2018
    Applicant: SeeCure Taiwan Co., Ltd.
    Inventors: Ning Tsao, Wei-Chung Chang
  • Publication number: 20180193494
    Abstract: A compound represented by formula (I) is provided, wherein in formula (I), R1 and R2 each independently represents hydrogen, O—R3 or S—R4, at least one of R1 and R2 is O—R3 or S—R4, and R3 and R4 are independently a C1 to C10 alkyl group, such that the C1 to C10 alkyl group is non-substituted or substituted with at least one selected from the group consisting of —OH, —NH2, halogen, ester, ether, and carboxylic acid, and M being a metal or a metal-containing compound. The compound represented by formula (I) is shown to have higher specificity to tumor cells, and is therefore suitable for carrying anti-cancer drugs and/or nuclear imaging agents.
    Type: Application
    Filed: January 9, 2017
    Publication date: July 12, 2018
    Applicant: SeeCure Taiwan Co., Ltd.
    Inventors: Wei-Chung Chang, Kun-Hsin Lee, Kai-Chi Chang, Ping-Fan Chen, Min-Huei Huang, Hung-Yuan Huang, Ning Tsao
  • Patent number: 10016520
    Abstract: A compound represented by formula (I) is provided, wherein in formula (I), R1 and R2 each independently represents hydrogen, O—R3 or S—R4, at least one of R1 and R2 is O—R3 or S—R4, and R3 and R4 are independently a C1 to C10 alkyl group, such that the C1 to C10 alkyl group is non-substituted or substituted with at least one selected from the group consisting of —OH, —NH2, halogen, ester, ether, and carboxylic acid, and M being a metal or a metal-containing compound. The compound represented by formula (I) is shown to have higher specificity to tumor cells, and is therefore suitable for carrying anti-cancer drugs and/or nuclear imaging agents.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: July 10, 2018
    Assignee: SeeCure Taiwan Co., Ltd.
    Inventors: Wei-Chung Chang, Kun-Hsin Lee, Kai-Chi Chang, Ping-Fan Chen, Min-Huei Huang, Hung-Yuan Huang, Ning Tsao
  • Publication number: 20180041809
    Abstract: The disclosure proposes a playback method including displaying a first playback session which comprises an on-demand streaming session in a foreground of a display of the electronic device; switching, at a first playback time (t1), the first playback session from being displayed in the foreground to a background in which the on-demand streaming session ceases streaming; recording the t1 and a first clock time (T1) in response to switching the first playback session from being displayed in the foreground to the background; switching the first playback session back from the background to being displayed in the foreground; recording a second clock time (T2) in response to switching the first playback session back from the background to being displayed in the foreground; and changing the on-demand streaming session as being displayed in the foreground to a second playback time (t2) which is determined according to t2=t1+(T2?T1).
    Type: Application
    Filed: August 4, 2017
    Publication date: February 8, 2018
    Applicant: Novatek Microelectronics Corp.
    Inventors: Wei-Chung Chang, Hsiang-An Wang
  • Publication number: 20180020031
    Abstract: A method for adaptively streaming an audio/visual (AV) material includes: processing a plurality of current data packets stored in a data buffer to play media segments of the AV material at a current quality; during playback of a current one of the media segments, determining whether a new data packet for playing a candidate one of the media segments at an improved quality is able to be completely downloaded in time; when the determination is affirmative, downloading the new data packet and processing the new data packet to play the candidate one of the media segments of the AV material at the improved quality on the player interface when the new data packet is completely downloaded and stored in the data buffer.
    Type: Application
    Filed: July 13, 2017
    Publication date: January 18, 2018
    Inventor: Wei-Chung CHANG
  • Publication number: 20180007135
    Abstract: A media content sharing method is provided which includes receiving a query message including query information associated with a media content from a client device, determining whether a storage unit contains a target description file including at least a segment information including characteristics corresponding to the query information, whereby the storage unit stores a plurality of description files uploaded from a plurality of content providing devices, and transmitting a request message to a first content providing device which uploads the target description file, for requesting the first content providing device to provide a target media segment.
    Type: Application
    Filed: July 4, 2016
    Publication date: January 4, 2018
    Inventor: Wei-Chung Chang
  • Patent number: 9467734
    Abstract: A storing method comprises sequentially storing at least one first media content into at least one first fragment of a storage device, and storing corresponding at least one first media metadata into a first media metadata writing storage window; and when the storage device reaches a storage limit and at least one second media content and corresponding at least one second media metadata are intended continuously to be stored into the storage device, converting the first media metadata writing storage window into a second media metadata reserving storage window to reserve the at least one first media metadata, and sequentially overwriting at least one second fragment of the storage device with the at least one second media content and storing the corresponding at least one second media metadata into a second media metadata writing storage window.
    Type: Grant
    Filed: February 8, 2015
    Date of Patent: October 11, 2016
    Assignee: NOVATEK Microelectronics Corp.
    Inventor: Wei-Chung Chang
  • Publication number: 20160150270
    Abstract: A storing method comprises sequentially storing at least one first media content into at least one first fragment of a storage device, and storing corresponding at least one first media metadata into a first media metadata writing storage window; and when the storage device reaches a storage limit and at least one second media content and corresponding at least one second media metadata are intended continuously to be stored into the storage device, converting the first media metadata writing storage window into a second media metadata reserving storage window to reserve the at least one first media metadata, and sequentially overwriting at least one second fragment of the storage device with the at least one second media content and storing the corresponding at least one second media metadata into a second media metadata writing storage window.
    Type: Application
    Filed: February 8, 2015
    Publication date: May 26, 2016
    Inventor: Wei-Chung Chang
  • Publication number: 20160012076
    Abstract: A file searching method for searching an original image file in an image processing device is provided, wherein the original image file includes a plurality of original image fragments and each of the plurality of original image fragments includes a plurality of key values.
    Type: Application
    Filed: November 28, 2014
    Publication date: January 14, 2016
    Inventor: Wei-Chung Chang
  • Publication number: 20150333334
    Abstract: A lithium ion battery using a copper nanowire fabric-based current collector comprises an anode, a cathode and a separation unit. The anode has a first current collector and an active material attached to the first current collector. The first current collector includes a copper nanowire fabric. The copper nanowire fabric is in form of a plate, and the active material is attached to the first current collector. The cathode has a second current collector and a lithium compound attached to the second current collector and releasing or absorbing lithium ions. The separation unit is arranged between the anode and the cathode and includes an electrolyte allowing lithium ions to move between the anode and the cathode. The anode has much less weight and further higher energy density than the conventional anode using copper foil as the first current collector.
    Type: Application
    Filed: August 22, 2014
    Publication date: November 19, 2015
    Inventors: Hsing-Yu Tuan, Wei-Chung CHANG
  • Patent number: 9158314
    Abstract: The present invention discloses a method for controlling a voltage regulator, including steps of: converting an input voltage to an output voltage and providing an output current; sensing the output current; reducing the output voltage; and when the reduction of the output voltage causes the output current to change, setting the output voltage back to a value which does not change the output current.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: October 13, 2015
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Nien-Hui Kung, Wei-Chung Chang