Patents by Inventor Shih-Chun Lo

Shih-Chun Lo 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).

  • Patent number: 12126350
    Abstract: A digital-to-analog converter and an operation method thereof are provided. The digital-to-analog converter includes a current source module, a decoder, a change indicator, and a random number generator. The decoder is coupled to the current source module and receives a digital input signal. The change indicator is coupled to the decoder and provides an indication signal to the decoder. The random number generator is coupled to the change indicator and provides a random number signal to the change indicator. The change indicator generates an indication signal according to the random number signal, and the decoder generates a control signal to the current source module according to the digital input signal and the indication signal, so that the current source module generates an analog output signal corresponding to the digital input signal according to the control signal.
    Type: Grant
    Filed: November 21, 2022
    Date of Patent: October 22, 2024
    Assignees: Global Unichip Corporation, Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Ting-Hao Wang, Hui-Wen Tsai, Shih-Chun Lo
  • Publication number: 20240274635
    Abstract: An optical sensor device is provided. The optical sensor device includes a semiconductor substrate, an isolation feature, a first doped region, a second doped region, and a third doped region. The semiconductor substrate of a first conductivity type includes a sensing region surrounded by an isolation region. The first doped region of a second conductivity type is located in the sensing region. The second doped region of the second conductivity type is located in the sensing region and above the first doped region. The third doped region of the first conductivity type is located in the sensing region and on the second doped region. In a cross-sectional view, the first doped region has a first length, the second doped region has a second length, and a first ratio, which is the ratio of the second length to the first length, is greater than 0 and less than 1.
    Type: Application
    Filed: February 13, 2023
    Publication date: August 15, 2024
    Applicant: Vanguard International Semiconductor Corporation
    Inventors: Shih-Hao LIU, Yu-Che TSAI, Jui-Chun CHANG, Wu-Hsi LU, Ming-Cheng LO
  • Publication number: 20240072816
    Abstract: A digital-to-analog converter and an operation method thereof are provided. The digital-to-analog converter includes a current source module, a decoder, a change indicator, and a random number generator. The decoder is coupled to the current source module and receives a digital input signal. The change indicator is coupled to the decoder and provides an indication signal to the decoder. The random number generator is coupled to the change indicator and provides a random number signal to the change indicator. The change indicator generates an indication signal according to the random number signal, and the decoder generates a control signal to the current source module according to the digital input signal and the indication signal, so that the current source module generates an analog output signal corresponding to the digital input signal according to the control signal.
    Type: Application
    Filed: November 21, 2022
    Publication date: February 29, 2024
    Applicants: Global Unichip Corporation, Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Ting-Hao Wang, Hui-Wen Tsai, Shih-Chun Lo
  • Publication number: 20240008358
    Abstract: The disclosure relates to a substituted cyclooctatetraene triplet excited-state quencher compound of Formula (I): wherein: Z is a wide band gap moiety; L is a non-conjugating linker group; each R, which may be the same or different, is a non-conjugating substituent; n is an integer from 0 to 7; and m is an integer from 1 to 6. The disclosure further relates to use of such compounds as triplet quenchers, compositions comprising such compounds, films or coatings comprising said compounds or compositions, and use of said compositions or films or coatings as active gain media for light amplification.
    Type: Application
    Filed: October 6, 2021
    Publication date: January 4, 2024
    Inventors: Van T. N. MAI, Shih-Chun LO, Viqar AHMAD, Jan SOBUS, Ebinazar B. NAMDAS
  • Publication number: 20220169608
    Abstract: A compound of the formula (1) exhibits high photoluminescence quantum yields, high radiative decay constant and low ASE thresholds from solution-processed neat and blend films. Ar1 and Ar2 are aryl groups, L is a divalent group having a group of the formula (2), and R is H or a diarylamino group. At least one alkyl group having at least five carbon atoms which are bonded is present in the formula (1).
    Type: Application
    Filed: June 5, 2020
    Publication date: June 2, 2022
    Inventors: Sangarange Don Atula SANDANAYAKA, Adikari Mudiyanselage Chathuranganie SENEVIRATHNE, Toshinori MATSUSHIMA, Chihaya ADACHI, Ebinazar Benjamin NAMDAS, Shih-Chun LO, Van T. N. MAI, Atul SHUKLA, Ilene ALLISON, Sarah K. MCGREGOR
  • Patent number: 10218373
    Abstract: An ADC calibration system includes a clock generating circuit, under test ADCs, a standard ADC, and a calibration circuit. The clock generating circuit generates operation clocks according to a system clock, and generates a calibration clock according to the system clock and a selection signal. The under test ADCs sample an input signal according to the operation clocks to output under test sampling results. The standard ADC samples the input signal according to the calibration clock to output a standard sampling result. The calibration circuit makes the phases of the calibration clock and a first operation clock received by a first ADC to be the same. The calibration circuit compares the standard sampling result with a first under test sampling result to generate calibration information corresponding to the first under test sampling result, and calibrates the first under test sampling result according to the calibration information.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: February 26, 2019
    Assignees: GLOBAL UNICHIP CORPORATION, TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Ting-Hao Wang, Shih-Chun Lo
  • Patent number: 8536333
    Abstract: A charge-neutral organometallic dendrimer is described, said dendrimer having the formula (I): CORE-[DENDRITE(-Q)a]n??(I) in which CORE represents a group of formula MXxYz, in which M represents a metal cation, x represents an integer of 1 or more, each X which may be the same or different represents a mono-, bi- or tri-dentate coordinating group, z represents 0 or an integer of 1 or more, and each Y which may be the same or different represents a coordinating group, the total of (b.x)+(c.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: September 17, 2013
    Assignees: Isis Innovation Limited, The University Court of the University of St. Andrews
    Inventors: Ifor David William Samuel, Paul Leslie Burn, Shih-Chun Lo
  • Patent number: 8322766
    Abstract: A gripper applied in a transport mechanism for transporting a wafer is provided. The transport mechanism includes a bar. The gripper includes a fixing member fixed to the bar, and a carrying member. The fixing member includes two grooves adjacent to the bottom of the fixing member. Each groove includes an entrance and a retaining portion. The carrying member includes a notch and a first claw. The notch is located at the top of the carrying member and communicates two opposite sides of the carrying member. The notch includes two inner walls, each having a protrusion. The carrying member is assembled to the fixing member by sliding each protrusion along one of the grooves from the corresponding entrance and until abutting against the corresponding retaining portion. The first claw is located at a first sidewall of the carrying member. The edge of the wafer is supportable by the first claw.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: December 4, 2012
    Assignee: Gintech Energy Corporation
    Inventors: William Hsiung, Shih-Chun Lo, Tony Lin
  • Patent number: 8319213
    Abstract: Light emitting devices are described which incorporate, as the light emitting element, a dendrimer of which the constituent dendrons include a conjugated dendritic structure comprising aryl and/or heteroaryl groups connected to each other via bonds between sp2 hybridised ring atoms of said aryl or heteroaryl groups.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: November 27, 2012
    Assignees: Isis Innovation Limited, The University Court of the University of St. Andrews
    Inventors: Paul Leslie Burn, Ifor David William Samuel, Shih-Chun Lo
  • Patent number: 8314549
    Abstract: This invention relates to a hat emitting device which comprises at least one layer that contains an organometallic dendrimer having a core comprising a metal cation. The invention also relates to organometallic dendrimers and methods for producing the same.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: November 20, 2012
    Assignees: Isis Innovation Limited, The University Court of the University of St. Andrews
    Inventors: Paul Leslie Burn, Shih-Chun Lo, John Lupton, Victor Christou, Jonathan N. G. Pillow, Ifor David William Samuel
  • Patent number: 8216699
    Abstract: The invention provides a cyclometallated complex comprising the structure of formula I wherein: M is a d-block transition metal; B is a five- or six-membered aryl or heteroaryl ring which is optionally substituted and optionally fused to one or more other aryl or heteroaryl rings; A is a five- or six-membered heteroaryl ring comprising at least three nitrogen atoms; R1 is a group other than hydrogen; n is zero or an integer equal to or greater than one; and A and B are optionally fused or linked by one or more covalent bonds. The invention also provides the use of such complexes in optoelectronic devices, and in particular in organic light emitting devices.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: July 10, 2012
    Assignee: Isis Innovation Limited
    Inventors: Paul Leslie Burn, Ifor David William Samuel, Shih-Chun Lo
  • Publication number: 20110272688
    Abstract: Light emitting devices are described which incorporate, as the light emitting element, a dendrimer of which the constituent dendrons include a conjugated dendritic structure comprising aryl and/or heteroaryl groups connected to each other via bonds between sp2 hybridised ring atoms of said aryl or heteroaryl groups.
    Type: Application
    Filed: June 13, 2011
    Publication date: November 10, 2011
    Applicants: THE UNIVERSITY COURT OF THE UNIVERSITY OF ST. ANDREWS, ISIS INNOVATION LIMITED
    Inventors: Paul Leslie Burn, Ifor David Samuel, Shih-Chun Lo
  • Publication number: 20110163270
    Abstract: This invention relates to a hat emitting device which comprises at least one layer that contains an organometallic dendrimer having a core comprising a metal cation. The invention also relates to organometallic dendrimers and methods for producing the same.
    Type: Application
    Filed: March 11, 2011
    Publication date: July 7, 2011
    Applicants: ISIS INNOVATION LIMITED, THE UNIVERSITY COURT OF THE UNIVERSITY OF ST. ANDREWS
    Inventors: Paul Leslie Burn, Victor Christou, Shih-Chun Lo, Jonathan Pillow, John Lupton, Ifor Samuel
  • Patent number: 7960725
    Abstract: Light emitting devices are described which incorporate, as the light emitting element, a dendrimer of which the constituent dendrons include a conjugated dendritic structure comprising aryl and/or heteroaryl groups connected to each other via bonds between sp2 hybridized ring atoms of said aryl or heteroaryl groups.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: June 14, 2011
    Assignees: Isis Innovation Limited, The University Court of the University of St. Andrews
    Inventors: Paul Leslie Burn, Ifor David William Samuel, Shih-Chun Lo
  • Patent number: 7960557
    Abstract: Asymmetric light-emitting dendrimers having the formulae: (a) CORE-[DENDRITE1]n[DENDRITE2]m and (b) CORE-[DENDRITE]n are disclosed.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: June 14, 2011
    Assignees: Isis Innovation Limited, The University Court of the University of St. Andrews
    Inventors: Paul Leslie Burn, Ifor David William Samuel, Shih-Chun Lo
  • Publication number: 20110127496
    Abstract: A charge-neutral organometallic dendrimer is described, said dendrimer having the formula (I): CORE-[DENDRITE(-Q)a]n??(I) in which CORE represents a group of formula MXXYZ, in which M represents a metal cation, x represents an integer of 1 or more, each X which may be the same or different represents a mono-, bi- or tri-dentate coordinating group, z represents 0 or an integer of 1 or more, and each Y which may be the same or different represents a coordinating group, the total of (b.x)+(c.
    Type: Application
    Filed: August 11, 2010
    Publication date: June 2, 2011
    Inventors: Ifor David William Samuel, Paul Leslie Burn, Shih-Chun Lo
  • Patent number: 7906902
    Abstract: This invention relates to a light emitting device which comprises at least one layer that contains an organometallic dendrimer having a core comprising a metal cation. The invention also relates to organometallic dendrimers and methods for producing the same.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: March 15, 2011
    Assignees: ISIS Innovation Limited, The University Court of the University of St. Andrews
    Inventors: Paul Leslie Burn, Shih-Chun Lo, John Lupton, Victor Christou, Jonathan N. G. Pillow, Ifor David William Samuel
  • Patent number: 7799917
    Abstract: A charge-neutral organometallic dendrimer is described, said dendrimer having the formula (I): CORE-[DENDRITE(-Q)a]n??(I) in which CORE represents a group of formula MXxYz, in which M represents a metal cation, x represents an integer of 1 or more, each X which may be the same or different represents a mono-, bi- or tri-dentate coordinating group, z represents 0 or an integer of 1 or more, and each Y which may be the same or different represents a coordinating group, the total of (b.x)+(c.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: September 21, 2010
    Assignees: Isis Innovation Limted, The University Court of the University of St. Andrews
    Inventors: Ifor David William Samuel, Paul Leslie Burn, Shih-Chun Lo
  • Publication number: 20100127251
    Abstract: Light emitting devices are described which incorporate, as the light emitting element, a dendrimer of which the constituent dendrons include a conjugated dendritic structure comprising aryl and/or heteroaryl groups connected to each other via bonds between sp2 hybridized ring atoms of said aryl or heteroaryl groups.
    Type: Application
    Filed: November 25, 2009
    Publication date: May 27, 2010
    Applicants: ISIS INNOVATION LIMITED, THE UNIVERSITY COURT OF THE UNIVERSITY OF ST. ANDREWS
    Inventors: Paul Leslie Burn, Ifor David Samuel, Shih-Chun Lo
  • Publication number: 20100096983
    Abstract: The invention provides a cyclometallated complex comprising the structure of formula I wherein: M is a d-block transition metal; B is a five- or six-membered aryl or heteroaryl ring which is optionally substituted and optionally fused to one or more other aryl or heteroaryl rings; A is a five- or six-membered heteroaryl ring comprising at least three nitrogen atoms; R1 is a group other than hydrogen; n is zero or an integer equal to or greater than one; and A and B are optionally fused or linked by one or more covalent bonds. The invention also provides the use of such complexes in optoelectronic devices, and in particular in organic light emitting devices.
    Type: Application
    Filed: December 23, 2009
    Publication date: April 22, 2010
    Applicant: Isis Innovation Limited
    Inventors: Paul Leslie Burn, Ifor David William Samuel, Shih-Chun Lo