P

Inventor

LIAO CHI-CHIEH

TW55 patents
⚠️ This page may combine multiple inventors who share the name “LIAO CHI-CHIEH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

PIXART IMAGING INC

39 patents
US8749764B2Jun 10, 2014

Distance-measuring device of measuring distance according to variation of imaging location and calibrating method thereof

PIXART IMAGING INC73 citations98
US12093480B2Sep 17, 2024

Lighting touchpad with different layer configuration of sensing electrodes and LED chips

PIXART IMAGING INC3 citations75
US11687187B2Jun 27, 2023

Lighting touchpad

PIXART IMAGING INC1 citations73
US11418193B2Aug 16, 2022

Key unit and keyboard using the same

PIXART IMAGING INC2 citations73
US10489003B1Nov 26, 2019

Capacitive touch control device, electricity charging controller, and electricity charged controller

PIXART IMAGING INC6 citations73
US9544508B2Jan 10, 2017

Image sensor which can adjust brightness information to fall in a predetermined range

PIXART IMAGING INC3 citations73
US9350922B2May 24, 2016

Image sensing method and image sensor utilizing the method

PIXART IMAGING INC3 citations73
US9746980B2Aug 29, 2017

Capacitive finger navigation module and manufacturing method thereof

PIXART IMAGING INC2 citations71
US9552118B2Jan 24, 2017

Capacitive finger navigation module and manufacturing method thereof

PIXART IMAGING INC3 citations71
US12285876B2Apr 29, 2025

Cleaning robot capable of eliminating reflection interference

PIXART IMAGING INC0 citations63
US10955308B2Mar 23, 2021

Pressure measuring method and pressure measuring apparatus

PIXART IMAGING INC0 citations63
US8836923B2Sep 16, 2014

Distance measurement system

PIXART IMAGING INC2 citations63
US12561029B2Feb 24, 2026

Touch panel

PIXART IMAGING INC0 citations62
US12498815B2Dec 16, 2025

Lighting touchpad with recessed protective layer and multiple substrates

PIXART IMAGING INC0 citations62
US12474805B1Nov 18, 2025

Sensing touchpad

PIXART IMAGING INC0 citations62
US12154732B2Nov 26, 2024

Key unit

PIXART IMAGING INC0 citations62
US12152925B2Nov 26, 2024

Optical detection device

PIXART IMAGING INC0 citations62
US11953400B2Apr 9, 2024

Input device including improved pressure sensing unit design

PIXART IMAGING INC0 citations62
US11852519B2Dec 26, 2023

Optical detection device

PIXART IMAGING INC0 citations62
US11726599B2Aug 15, 2023

Single layer capacitive touch force sensor

PIXART IMAGING INC0 citations62
US11674862B2Jun 13, 2023

Input device including improved pressure sensing unit design

PIXART IMAGING INC1 citations62
US11561638B2Jan 24, 2023

Single layer capacitive touch force sensor

PIXART IMAGING INC1 citations62
US11437994B2Sep 6, 2022

Touch sensor and keyboard using the same

PIXART IMAGING INC1 citations62
US11051758B2Jul 6, 2021

Electronic device capable of detecting wearing state or touching state

PIXART IMAGING INC1 citations62
US11048907B2Jun 29, 2021

Object tracking method and object tracking system

PIXART IMAGING INC0 citations62
US12517606B2Jan 6, 2026

Lighting touchpad with sensing electrode layout with lighting devices evenly distributed

PIXART IMAGING INC0 citations52
US12175047B2Dec 24, 2024

Capacitive touchpad with LED die positioned to correspond with electrode

PIXART IMAGING INC0 citations52
US11803273B2Oct 31, 2023

Touch sensor, touch pad, method for identifying inadvertent touch event and computer device

PIXART IMAGING INC0 citations52
US10578507B2Mar 3, 2020

Pressure measuring method and pressure measuring apparatus

PIXART IMAGING INC0 citations52
US10261687B2Apr 16, 2019

Pin sharing circuit, pin sharing method, electronic device and electronic wire using the same

PIXART IMAGING INC0 citations52
US10156939B2Dec 18, 2018

Light source assembly of optical touch device

PIXART IMAGING INC0 citations52
US10013071B2Jul 3, 2018

Three-dimensional gesture sensing method and touch sensing device using the same

PIXART IMAGING INC0 citations51
US12159427B2Dec 3, 2024

Object position determining system and object detection system

PIXART IMAGING INC0 citations50
US9996169B2Jun 12, 2018

Capacitive joystick device

PIXART IMAGING INC0 citations50
US10379638B2Aug 13, 2019

Method of determining adaptive DPI curve

PIXART IMAGING INC0 citations49
US12366928B2Jul 22, 2025

Input method and controller of touch keyboard

PIXART IMAGING INC0 citations47
US10437365B2Oct 8, 2019

Driver integrated circuit of touch panel and associated driving method

PIXART IMAGING INC0 citations42
US9684422B2Jun 20, 2017

Smart device having ability for rejecting mistaken touching

PIXART IMAGING INC0 citations42
US9207809B2Dec 8, 2015

Optical touch system and optical touch control method

PIXART IMAGING INC0 citations42

HSU EN-FENG

5 patents

YANG SHU-SIAN

2 patents

GU REN HAU

2 patents

GU REN-HAU

1 patent

LIAO CHI CHIEH

1 patent

Showing the top 50 of 55 patents by PatentIndex Score.