MicroLED Technology

Data-Vµ microLED Displays

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Plessey Innovations

0.7” native Blue active-matrix microLED display module

0.7” diagonal native Green array

Data-Vµ tri-colour direct-drive microLED display demonstration

Data-Vµ Development Kit with native Green direct-drive

microLED display

0.7” diagonal native Blue array

0.26” native Green active-matrix microLED display

Native Red microLEDs 0.26” native Green active-matrix microLED display

module

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Public Partnerships

IP Protected Technology

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Plessey GaN on Silicon EPI Technology

• Plessey acquired University of Cambridge spin-off CamGaN in 2012 to commercialise GaN on Si LED technology→ Plessey owns IPs and know-how of epitaxy technology

• Key advantages of Plessey GaN on Si technology:i) Larger wafer sizes 6-inch and 8-inchii) Epitaxy technology optimised for high IQEiii) Total epilayer thickness only 2.5 - 3.5 µm thickiv) Wavelength uniformity < 1 nm std deviation across waferv) Low wafer bow of 0 ± 20 µmvi) Very low particle/defect density across wafer

✓

< 5 particles per wafer

Data-Vµ

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Data-Vµ Display – Standard Configuration

• Segmented display

• Each segment has its own contact pad

• Standard configuration can have up to 84 segments

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Data-Vµ Display – Display Sizes

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GLASS BK7WITH OPTICAL BONDING TAPE

DISPLAY DIE

DIE ATTACH TAPE

HEAT SLUG/ STIFFENERPLATED COPPER BASE

Data-Vµ Display – Construction

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Data-Vµ Display – Symbolic Display

Direct Drive Display Gen 1:• No back plane.• Every Symbol/Emitter has its own terminal.• Display driven with Constant Current or

voltage source• Uses many pads – 80LEDs = At least 81 pads• Cannot design enclosed features

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Data-Vµ Display Display – Development Kit

Display

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Direct Drive Segmented Display – Evaluation Kit Features

• 5.12 x 3.84mm Active area Green Display

• On-board driver with ATMega328 µcontroller

• Open source firmware & supported library for

development

• Rechargeable (USB), 3000mAh battery

• Plug & play Bluetooth module

• Available protocols: I2C/UART/SPI/USB

• Technical documentation in USB stick included kit

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Data-Vµ Display: Development Kit Accessories

Display Mounted on FR4 Display Mounted on Semi-Rigid Board

Driver & Connector Set 300mm Flexi Extender