Ubiquitous Displays and Sensors Activating Surfaces with Flexible Electronics. Dean Baker, Director FlexEnable. APAC Innovation Summit 2016, Hong Kong

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1 Ubiquitous Displays and Sensors Activating Surfaces with Flexible Electronics Dean Baker, Director FlexEnable, Hong Kong

2 Activating surfaces with flexible displays and sensors Flexible Plastic Displays Automotive Consumer electronics Wearables Digital Signage Flexible Plastic Sensors Banking and PoS Border control Healthcare NDT 25 November

3 Partnering to bring OTFT Technology to displays and sensors FlexEnable OTFT platform Production Product Companies Display Makers 25 November

4 OTFT Array Build Manufacturing at Low Process Temperatures Array Build Manufacturing Temperature Cycle LTPS Array Build > 350 o C IGZO Array Build > 150 oc OTFT Array Build < 100 oc OTFT Array Build Process Temperatures Simple manufacturing processes that are compatible with plastics Choice of low cost plastic substrates (TAC / PET / PC) Low Array Build Total Pitch Distortion (TPD) High performance material handling 25 November,

5 Option to retro-fit existing a-si lines with OTFT Array Build Proven Industrial Processes Unique Displays & Sensors Industrial Material Supply Chain Favourable Process Flow 25 November

6 Breakthrough Organic LCD on low cost plastic substrates Conforming an OLCD to a curved surface In partnership with OTFT process compatibility with existing LCD manufacturing Ultra-thin, light, robust and conformable plastic OLCD displays Easily formed around bend radius down to 35mm 130 micron thin glass-free stack Easily cut into non-square & irregular shapes 25 November

7 Example: Conformable OLCD with curved backlight Example backlight uniformity 100mm from LEDs 88% Uniformity LED edge input Small drop-off (10%) in brightness seen with decreasing radius of curvature. 25 November

8 Plastic OLCD can achieve same performance as colour a-si LCD displays Current Organic Semiconductors 3X a:si Ongoing Rapid Performance Development 25 November

9 Organic Semiconductor Mobility Performance Progression 10 In Production EPD Focus Next Generations Diverse Applications Carrier Mobility cm2/vs a:si TFT Mobility November

10 OTFT: Extremely low leakage currents Enable lower display refresh rates = power saving for static images Higher signal-to-noise ratio = lower X-ray dose for X-Ray Sensor 25 November

11 Currently Polymer OSC materials provide best results manufacturing but both materials types are developing Small molecule semiconductors High mobility 1-10 cm 2 /Vs H2n+1 C n S S C n - BTBT C n H 2n+1 Polycrystalline microstructure Main issue: uniformity SiR 3 R=iPr TIPS-pentacene SiR 3 Conjugated polymers Near-amorphous microstructure: Good large area uniformity and excellent mechanical properties S S C 16 H 33 C 16 H 33 S S C 16 H 33 C 16 H 33 N N N S N n n N S Until recently, performance and stability lower (Mobility 1-5 cm 2 /Vs) S R N O O N R S Ar 25 November

12 Low Cost Direct Solution Coating used for Plastic OLCD TAC Cellulose Triacetate Direct Solution Coating Colour Photoresists Photo Alignment Layers Polymer Pixel Dielectric Polymer Gate Dielectric Polymer Semiconductor Polymer Planarization Polymer Hard Coating TAC Cellulose Triacetate Section of Plastic OTFT LCD Cell (FFS Mode) Replacing expensive PI and PECVD SiOx & SiNx with low cost direct solution coating 25 November

13 Plastic OTFT for Image and X-Ray Sensors OPD OTFT Array Fabrication [FlexEnable] OTFT Array Organic Photo Diode (OPD) Deposition [Partner] Scintillator Layer X-Ray Detector [Partner] Image Sensor [Partner] 25 November

14 FlexEnable & ISORG: Thin Plastic High Security Biometrics Large area Fingerprint and Vein Sensor on plastic Biometric sensing wrapped surfaces Cost effective manufacturing of large area sensors OPD stack OTFT stack Plastic substrate ~300um Demonstrated with FlexEnable/ISORG technology Barcode Reading Imaging Fingerprint Vein recognition 25 November

15 Advantages of FlexEnable / ISORG optical FP and vein sensor High sensitivity than capacitive fingerprint sensors Large area = better reliability / quicker detection The image can be taken in one shot as the sensor can be conformed to the finger No additional glass optics required Parameter Array specifications Sensor size 3 x 3.2 (FAP 60) Multi-spectral imaging = less susceptibility to contaminants, improper contact or bright ambient lights Resolution 500 dpi Resolution 1536 x 1600 Pixel pitch 50.8µmx50.8µm 25 November

16 Flexible X Ray Sensors Shatterproof, with near zero incremental thickness and weight Enables X-ray systems to go anywhere to RTA s 1, around pipework, mobile systems Conformable around the body improves accuracy and patient comfort Industry Applications 1: Road Traffic Accidents 25 November

17 Thank You 25 November