Inventor · disambiguated record

Han-Chi Liu

Also filed as: LIU HAN · LIU HAN-CHI

52 granted patents·10 pending applications·172 citations·filing 2002–2025

97Inventor score

Technology areasH04N H10F G06F H10W G06V

Files withPIXART IMAGING INC30 TAIWAN SEMICONDUCTOR MFG7 FARADAY TECH CORP4 LIU HAN-CHI4 TAIWAN SEMICONDUCTOR MFG CO LTD4

Top patents by PatentIndex Score

62 records

0198US11792550B2Pixel circuit outputting pulse width signal and optical sensor using the samePIXART IMAGING INC·Filed 2022·Granted Oct 17, 2023·5 cites·16 claims
0296US11546540B2Analog operation circuit for operating pulse width signals outputted from pixel circuitPIXART IMAGING INC·Filed 2022·Granted Jan 3, 2023·3 cites·20 claims
0396US11290671B2Pixel circuit outputting pulse width signals and performing analog operationPIXART IMAGING INC·Filed 2020·Granted Mar 29, 2022·3 cites·19 claims
0494US11055548B1Motion sensor using temporal difference pixels and lift-up detection thereofPIXART IMAGING INC·Filed 2020·Granted Jul 6, 2021·3 cites·20 claims
0594US7388187B1Cross-talk reduction through deep pixel well implant for image sensorsTAIWAN SEMICONDUCTOR MFG·Filed 2007·Granted Jun 17, 2008·29 cites·20 claims
0691US8368130B2Method and device to reduce dark current in image sensorsTAIWAN SEMICONDUCTOR MFG·Filed 2010·Granted Feb 5, 2013·6 cites·20 claims
0788US8604405B2Backside illuminated image sensor device with refractive index dependent layer thicknesses and method of forming the sameLIU HAN-CHI·Filed 2009·Granted Dec 10, 2013·13 cites·20 claims
0886US12058467B2Pixel circuit outputting pulse width signal and optical sensor using the samePIXART IMAGING INC·Filed 2023·Granted Aug 6, 2024·0 cites·20 claims
0986US6956519B1Switched capacitor circuit of a pipeline analog to digital converter and a method for operating the switched capacitor circuitFARADAY TECH CORP·Filed 2004·Granted Oct 18, 2005·39 cites·15 claims
1084USD926214SDisplay screen with a transitional graphical user interfaceVIVOTEK INC·Filed 2017·Granted Jul 27, 2021·29 cites·1 claims
1183US9107076B1Data fraud detection via device type identificationZANG HUI·Filed 2012·Granted Aug 11, 2015·7 cites·18 claims
1282US10498978B2Digital imaging device with enhanced dynamic range and operating method as well as data processing circuit thereofPIXART IMAGING INC·Filed 2018·Granted Dec 3, 2019·3 cites·20 claims
1381US12317604B2Analog operation circuit for processing pixel data in analog phasePIXART IMAGING INC·Filed 2024·Granted May 27, 2025·0 cites·20 claims
1477US7879639B2Method and device to reduce dark current in image sensorsTAIWAN SEMICONDUCTOR MFG·Filed 2007·Granted Feb 1, 2011·3 cites·20 claims
1577US7732844B2Crosstalk improvement through P on N structure for image sensorTAIWAN SEMICONDUCTOR MFG·Filed 2007·Granted Jun 8, 2010·5 cites·19 claims
1677US2025285430A1Neural signal detection circuit outputting time difference data or neural dataPIXART IMAGING INC·Filed 2025·Application pending·0 cites
1776US8436443B2Backside depletion for backside illuminated image sensorsHSU TZU-HSUAN·Filed 2008·Granted May 7, 2013·3 cites·18 claims
1873US7923279B2Method and structure for reducing cross-talk in image sensor devicesTAIWAN SEMICONDUCTOR MFG·Filed 2009·Granted Apr 12, 2011·2 cites·20 claims
1972US8125550B2Correlation double sampling circuit for image sensorSU TSUNG-YI·Filed 2008·Granted Feb 28, 2012·4 cites·16 claims
2069US9696737B2Surge current compensating circuit and comparator modulePIXART IMAGING INC·Filed 2015·Granted Jul 4, 2017·1 cites·11 claims
2169US8759141B2Backside depletion for backside illuminated image sensorsTAIWAN SEMICONDUCTOR MFG·Filed 2013·Granted Jun 24, 2014·0 cites·20 claims
2268US9029756B2Optical displacement detection apparatus and optical displacement detection methodCHEN HUI-HSUAN·Filed 2012·Granted May 12, 2015·2 cites·10 claims
2368US2023386258A1Motion detection device using temporal difference and spatial difference of pixel dataPIXART IMAGING INC·Filed 2023·Application pending·0 cites
2467US12087773B2Logic circuit capable of preventing latch-upPIXART IMAGING INC·Filed 2023·Granted Sep 10, 2024·0 cites·18 claims
2567US11783633B2Motion sensor using temporal difference pixels and lift-up detection thereofPIXART IMAGING INC·Filed 2021·Granted Oct 10, 2023·0 cites·20 claims
2667US11614359B2Sensor circuit having identical capacitors to improve sensing efficiency of pixels and operating method thereofPIXART IMAGING INC·Filed 2021·Granted Mar 28, 2023·0 cites·14 claims
2767US11592330B2Pixel circuit having capacitor with identical electrodes to improve sensing efficiency and operating method thereofPIXART IMAGING INC·Filed 2021·Granted Feb 28, 2023·0 cites·15 claims
2867US11592331B2Pixel circuit to improve sensing efficiency, image sensor using the same and operating method thereofPIXART IMAGING INC·Filed 2021·Granted Feb 28, 2023·0 cites·16 claims
2967US10044949B2Digital imaging device with enhanced dynamic range and operating method thereofPIXART IMAGING INC·Filed 2016·Granted Aug 7, 2018·1 cites·20 claims
3066US12347181B2Neural signal detection circuit outputting time difference data or neural dataPIXART IMAGING INC·Filed 2021·Granted Jul 1, 2025·0 cites·9 claims
3166US8440540B2Method for doping a selected portion of a deviceLIU HAN-CHI·Filed 2009·Granted May 14, 2013·2 cites·20 claims
3266US7389488B2Method of finding driving strength and computer accessible record medium to store program thereofFARADAY TECH CORP·Filed 2005·Granted Jun 17, 2008·4 cites·16 claims
3363US11287316B2Circuit to improve sensing efficiency of pixelsPIXART IMAGING INC·Filed 2019·Granted Mar 29, 2022·0 cites·9 claims
3463US7824948B2Method and structure for reducing cross-talk in image sensor devicesTAIWAN SEMICONDUCTOR MFG·Filed 2009·Granted Nov 2, 2010·1 cites·20 claims
3560US9041841B2Image sensor having enhanced backside illumination quantum efficiencyLIAO YIN-KAI·Filed 2009·Granted May 26, 2015·2 cites·20 claims
3659US8912619B2Ultra-violet light sensing device and manufacturing method thereofLIU HAN-CHI·Filed 2013·Granted Dec 16, 2014·0 cites·20 claims
3758US11688739B2Logic circuit capable of preventing latch-upPIXART IMAGING INC·Filed 2021·Granted Jun 27, 2023·0 cites·11 claims
3857US9496302B2Crosstalk improvement through P on N structure for image sensorTAIWAN SEMICONDUCTOR MFG CO LTD·Filed 2014·Granted Nov 15, 2016·0 cites·19 claims
3956US9837458B2Crosstalk improvement through P on N structure for image sensorTAIWAN SEMICONDUCTOR MFG CO LTD·Filed 2016·Granted Dec 5, 2017·0 cites·20 claims
4055US10269848B2Image sensor having enhanced backside illumination quantum efficiencyTAIWAN SEMICONDUCTOR MFG CO LTD·Filed 2017·Granted Apr 23, 2019·0 cites·20 claims
4152US9640582B2Method of manufacturing image sensor having enhanced backside illumination quantum efficiencyTAIWAN SEMICONDUCTOR MFG CO LTD·Filed 2015·Granted May 2, 2017·0 cites·20 claims
4252US2006008611A1Sealing of honeycomb core and the honeycomb core assembly made with the sameSHEN SHYAN B·Filed 2005·Application pending·0 cites
4348US11012653B2Image sensor apparatus and method capable of rapidly reading out and processing pixel voltages of pixel arrayPIXART IMAGING INC·Filed 2019·Granted May 18, 2021·0 cites·14 claims
4447US10609319B2Image sensor capable of averaging pixel dataPIXART IMAGING INC·Filed 2017·Granted Mar 31, 2020·0 cites·10 claims
4546US10359312B2Pixel transfer rate boosting devicePIXART IMAGING INC·Filed 2017·Granted Jul 23, 2019·0 cites·18 claims
4646US10062724B1Image sensor and sensing pixel array for reading out charge of sensing signal and charge of reset signal of one sensing pixel unit after anotherPIXART IMAGING INC·Filed 2017·Granted Aug 28, 2018·0 cites·10 claims
4746US8669133B2Crosstalk improvement through P on N structure for image sensorCHANG CHUNG-WEI·Filed 2010·Granted Mar 11, 2014·0 cites·20 claims
4845US8901826B2Light sensing module and calibration method for driving current of light sourceLIU HAN-CHI·Filed 2012·Granted Dec 2, 2014·0 cites·13 claims
4942US9570492B2Pixel array of image sensor and method of fabricating the samePIXART IMAGING INC·Filed 2015·Granted Feb 14, 2017·0 cites·16 claims
5042US9417713B2Image-capturing device for optical pointing apparatus having large and small area image-sensing unitsHuang sen huang·Filed 2012·Granted Aug 16, 2016·0 cites·22 claims

Showing the top 50 of 62 patent records by PatentIndex Score.

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →