Inventor · disambiguated record
Chi-Chieh Liao
Also filed as: LIAO CHI-CHIEH
53 granted patents·16 pending applications·140 citations·filing 2010–2025
97Inventor score
Top patents by PatentIndex Score
69 records- 0197US8749764B2Distance-measuring device of measuring distance according to variation of imaging location and calibrating method thereofPIXART IMAGING INC·Filed 2013·Granted Jun 10, 2014·73 cites·9 claims
- 0296US12093480B2Lighting touchpad with different layer configuration of sensing electrodes and LED chipsPIXART IMAGING INC·Filed 2023·Granted Sep 17, 2024·3 cites·6 claims
- 0388US11418193B2Key unit and keyboard using the samePIXART IMAGING INC·Filed 2020·Granted Aug 16, 2022·2 cites·22 claims
- 0488US10489003B1Capacitive touch control device, electricity charging controller, and electricity charged controllerPIXART IMAGING INC·Filed 2018·Granted Nov 26, 2019·6 cites·20 claims
- 0586US11687187B2Lighting touchpadPIXART IMAGING INC·Filed 2021·Granted Jun 27, 2023·1 cites·7 claims
- 0685US9204843B2Optical distance measurement system and operation method thereofGU REN-HAU·Filed 2012·Granted Dec 8, 2015·9 cites·21 claims
- 0783US12498815B2Lighting touchpad with recessed protective layer and multiple substratesPIXART IMAGING INC·Filed 2024·Granted Dec 16, 2025·0 cites·16 claims
- 0883US12152925B2Optical detection devicePIXART IMAGING INC·Filed 2023·Granted Nov 26, 2024·0 cites·3 claims
- 0983US11561638B2Single layer capacitive touch force sensorPIXART IMAGING INC·Filed 2021·Granted Jan 24, 2023·1 cites·16 claims
- 1082US9544508B2Image sensor which can adjust brightness information to fall in a predetermined rangePIXART IMAGING INC·Filed 2016·Granted Jan 10, 2017·3 cites·8 claims
- 1182US8633978B2Human face detection and tracking deviceYANG SHU-SIAN·Filed 2010·Granted Jan 21, 2014·6 cites·19 claims
- 1282US8514375B2Distance-measuring device of measuring distance according to variation of imaging location and calibrating method thereofHSU EN-FENG·Filed 2010·Granted Aug 20, 2013·8 cites·25 claims
- 1380US12474805B1Sensing touchpadPIXART IMAGING INC·Filed 2024·Granted Nov 18, 2025·0 cites·14 claims
- 1480US11953400B2Input device including improved pressure sensing unit designPIXART IMAGING INC·Filed 2023·Granted Apr 9, 2024·0 cites·10 claims
- 1580US11674862B2Input device including improved pressure sensing unit designPIXART IMAGING INC·Filed 2021·Granted Jun 13, 2023·1 cites·25 claims
- 1679US9350922B2Image sensing method and image sensor utilizing the methodPIXART IMAGING INC·Filed 2013·Granted May 24, 2016·3 cites·18 claims
- 1779US2025054181A1Object position determining system and object detection systemPIXART IMAGING INC·Filed 2024·Application pending·0 cites
- 1878US9552118B2Capacitive finger navigation module and manufacturing method thereofPIXART IMAGING INC·Filed 2015·Granted Jan 24, 2017·3 cites·20 claims
- 1977US8390736B2Shooting parameter adjustment method for face detection and image capturing device for face detectionYANG SHU-SIAN·Filed 2010·Granted Mar 5, 2013·4 cites·16 claims
- 2076US11437994B2Touch sensor and keyboard using the samePIXART IMAGING INC·Filed 2020·Granted Sep 6, 2022·1 cites·7 claims
- 2175US9746980B2Capacitive finger navigation module and manufacturing method thereofPIXART IMAGING INC·Filed 2016·Granted Aug 29, 2017·2 cites·20 claims
- 2275US2025068286A1Capacitive touchpadPIXART IMAGING INC·Filed 2024·Application pending·0 cites
- 2374US11051758B2Electronic device capable of detecting wearing state or touching statePIXART IMAGING INC·Filed 2019·Granted Jul 6, 2021·1 cites·12 claims
- 2473US11726599B2Single layer capacitive touch force sensorPIXART IMAGING INC·Filed 2022·Granted Aug 15, 2023·0 cites·20 claims
- 2572US2025271959A1Lighting touchpadPIXART IMAGING INC·Filed 2025·Application pending·0 cites
- 2671US11852519B2Optical detection devicePIXART IMAGING INC·Filed 2020·Granted Dec 26, 2023·0 cites·21 claims
- 2771US8922706B2Image system and denoising method thereforLIAO CHI CHIEH·Filed 2012·Granted Dec 30, 2014·3 cites·13 claims
- 2871US8462318B2Distance-measuring system with correction function and method thereofHSU EN-FENG·Filed 2012·Granted Jun 11, 2013·4 cites·14 claims
- 2970US12285876B2Cleaning robot capable of eliminating reflection interferencePIXART IMAGING INC·Filed 2022·Granted Apr 29, 2025·0 cites·18 claims
- 3068US12175047B2Capacitive touchpad with LED die positioned to correspond with electrodePIXART IMAGING INC·Filed 2022·Granted Dec 24, 2024·0 cites·6 claims
- 3167US12159427B2Object position determining system and object detection systemPIXART IMAGING INC·Filed 2022·Granted Dec 3, 2024·0 cites·14 claims
- 3267US8836923B2Distance measurement systemPIXART IMAGING INC·Filed 2013·Granted Sep 16, 2014·2 cites·18 claims
- 3367US8718962B2Calibrating method for calibrating measured distance of a measured object measured by a distance-measuring device according to ambient temperature and related deviceHSU EN-FENG·Filed 2011·Granted May 6, 2014·3 cites·13 claims
- 3466US9093342B2Optical sensor capable of detecting IR light and visible light simultaneouslyHSU EN-FENG·Filed 2012·Granted Jul 28, 2015·0 cites·4 claims
- 3565US2025315123A1Touch device control method and touch device which can provide hand writing functionPIXART IMAGING INC·Filed 2025·Application pending·0 cites
- 3663US10955308B2Pressure measuring method and pressure measuring apparatusPIXART IMAGING INC·Filed 2020·Granted Mar 23, 2021·0 cites·12 claims
- 3762US2025046544A1Mechanical key component and mechanical keyboardPIXART IMAGING INC·Filed 2024·Application pending·0 cites
- 3861US2025222593A1Cleaning robot capable of eliminating reflection interferencePIXART IMAGING INC·Filed 2025·Application pending·0 cites
- 3960US8537339B2Distance measurement system and method thereofHSU EN-FENG·Filed 2010·Granted Sep 17, 2013·1 cites·8 claims
- 4060US2021290158A1Electronic device capable of detecting wearing statePIXART IMAGING INC·Filed 2021·Application pending·0 cites
- 4157US12154732B2Key unitPIXART IMAGING INC·Filed 2022·Granted Nov 26, 2024·0 cites·10 claims
- 4257US9898137B2Object positioning method for a touch panelPIXART IMAGING INC·Filed 2017·Granted Feb 20, 2018·0 cites·12 claims
- 4356US10578507B2Pressure measuring method and pressure measuring apparatusPIXART IMAGING INC·Filed 2017·Granted Mar 3, 2020·0 cites·5 claims
- 4455US9471180B2Optical touch panel system, optical apparatus and positioning method thereofKAO MING-TSAN·Filed 2014·Granted Oct 18, 2016·0 cites·16 claims
- 4555US2016211302A1Optical sensor capable of detecting ir light and visible light simultaneouslyPIXART IMAGING INC·Filed 2015·Application pending·0 cites
- 4654US12366928B2Input method and controller of touch keyboardPIXART IMAGING INC·Filed 2022·Granted Jul 22, 2025·0 cites·12 claims
- 4754US10156939B2Light source assembly of optical touch devicePIXART IMAGING INC·Filed 2016·Granted Dec 18, 2018·0 cites·6 claims
- 4854US2015009172A1Touch positioning method for touch panelPIXART IMAGING INC·Filed 2014·Application pending·0 cites
- 4952US2016299633A1Touch positioning method for touch panelPIXART IMAGING INC·Filed 2016·Application pending·0 cites
- 5050US11803273B2Touch sensor, touch pad, method for identifying inadvertent touch event and computer devicePIXART IMAGING INC·Filed 2021·Granted Oct 31, 2023·0 cites·4 claims
Showing the top 50 of 69 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Chi-Chieh Liao files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →