12/11@ 元智大學資工書報演講

觸控技術簡介

B.N.LinEmail: bnlin@unidisplay.com

UniDisplay

Contents

Mobile device v.s. TP Touch product & history Touch panel introduction Detect method on touch panel Difficulties on the IC solution

Contents

Mobile device v.s. TP Touch product & history Touch panel introduction Detect method on touch panel Difficulties on the IC solution

Mobile device

Small Border? Flat surface? Finger Touch? Gesture? Application? Good platform? Brand? Others?

Apple i phone

Flat surface

Contents

Mobile device v.s. TP Touch product & history Touch panel introduction Detect method on touch panel Difficulties on the IC solution

Mobile devices

From Cypress

Multi-touch history

From Cypress

Multi-touch history

Touch Screen Application Map

Contents

Mobile device v.s. TP Touch product & history Touch panel introduction Detect method on touch panel Difficulties on the IC solution

Touch panels

Touch panel technologies

Touch via wave

Microsoft surface

1. table 2. IR illuminator 3. IR detector 4. Projector

FTIR – Jeff Han

Frustrated Total Internal Reflection

From perspective pixel

DIY – surface & FTIR

http://uiui.mmdays.com/2008/05/09/diy-surface-table-ii/

DIY – surface & FTIR

透明材質 ( 壓克力 ) 紅外光投光器 (IR Illuminator) 投影機 (Projector) 投影布幕 (Diffuser) 紅外線攝影機 (Webcam) 木材 ( 桌子 ) PC + TouchLib ( 偵測手指的軟體 ) - 反光鏡 ( 大 Table 需求 ) -Lee Filter ( 均勻打光 )

Contents

Mobile device v.s. TP Touch product & history Touch panel introduction Touch Detect method Difficulties on the IC solution

Resistive touch

Pressure to shorting ITO

AMR -

Analog matrix resistive

Capacitive touch

Capacitive touch

Capacitive – button(0D)/scroll(1D)

Capacitive – 2D

Capacitive touch sense methods

Capacitive – PCAP design

Single capacitance Mutual capacitance DITO Structure Stack Structure

A. DITO structure

B. Stacked structure

Capacitive – single v.s. mutual

Contents

Mobile device v.s. TP Touch product & history Touch panel introduction Detect method on touch panel Difficulties on the IC solution

Difficulties on IC solution

Market IO number Panel Size Compatible with panel IC & component power consumption Spec. define Patent Others?

Conclusion

Small size - touch with finger Large size - touch with finger + pen Many Solutions Many Questions Many Opportunities

Q and A