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1、Walker Mobile LLC1 The Future of Mobile Touch Walker Mobile LLC October 2 2007 Walker Mobile LLC2 What was the most important event in touch in mobile displays in 2007 Question Walker Mobile LLC3 Photos courtesy of Apple Answer The Apple iPhone and the iPod touch Walker Mobile LLC4 Why The innovativ
2、e user interface changed the perception of the value of touch The hardware brought projected capacitive touch from a niche into the mainstream Walker Mobile LLC5 A Quick Trip Through The Future Of Mobile Touch T The past Four wire resistive touch T The future Projected capacitive touch Why did Apple
3、 choose it How does it work How is it implemented in the iPhone niche positioning OSurface capacitive too sensitive to EMI OInfrared too much projection above touch surface OSurface acoustic wave SAW too sensitive to contamination OOptical doesn t scale down to mobile size too much projection OBendi
4、ng wave not available yet as a component OForce sensing not available yet too sensitive to vibration OIn pixel not available yet light sensing causes light loss Photo courtesy of EELY pre iPhone Walker Mobile LLC7 6 29 07 Projected Capacitive Touch Enters The Mainstream T Why did Apple choose projec
5、ted capacitive It supports multi touch required by the iPhone s user interface OOnly other current multi touch technologies are IR 500M units 41 total 14 market penetration 163M units 16 total Resistive insignificant Walker Mobile LLC16 Walker Mobile s Forecast Mobile Phone Touch Technology 2007 200
6、8 2009 Projected Capacitive iPhone 3M 9M 18M Top 5 OEMs 12M 25M 50M Others 1M 2M 4M Mobile Phones with Projected Capacitive 16M 36M 72M Resistive 45M 50M 45M Mobile Phones with Touch 61M 86M 117M Percentage of Total Mobile Phones 5 8 7 7 9 9 iSuppli 12M 1 vs Strategy Analytics 163M 14 Touch Technolo
7、gies in Mobile Phones iSuppli 68M vs Strategy Analytics 187M 5 8 16 Walker Mobile LLC17 Why Just Mobile Phones T Walker Mobile predicts that projective capacitive touch will penetrate other mobile devices PND PMP PDA MID DSC DVC etc Rapidly increasing number of suppliers OFew barriers to entry Rapid
8、ly dropping cost O3M s 2 inch 2 layer PET sensor 2 to 6 depending on volume Substantial user benefits OVery high durability depending on the cover material ONo optical loss longer battery life higher contrast OMulti touch depending on the controller User negatives ONo stylus This is the main reason
9、resistive will maintain some market share especially in Asia Walker Mobile LLC18 In Closing T We ve just barely scratched the surface of mobile touch RPO s optical waveguide infrared touch SID 2007 Sharp s in pixel light sensing touch sampling 9 07 Samsung s in pixel capacitive sensing touch Haptics
10、 in mobile displays Mobile SAW from Fujitsu Labs ITO replacement materials Increasing use of glass glass resistive touch Solutions for increased outdoor readability hot topic New touch start ups Integritouch SiMa Systems Stantum N trig s dual mode pen the pinch gesture was in use long before the iPh
11、one existed on paper The touch screen gesture patents for which Apple has applied but hasn t been granted yet are largely a PR exercise Illustration from Apple patent application Walker Mobile LLC22 iPhone Touch Sensor Stack Up Measurements courtesy of Portelligent Walker Mobile LLC23 Balda TPK Optera
