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MicroLED Technology: Red MicroLED challenges, Trends in III-Vs for MicroLEDs, Pick & Place, Bonding, Laser Repair and Selective Transfer, Porous GaN, Tunable Polychromatic, and others

In this newsletter, you can learn about the following technologies. We will have the opportunity to download the full slides.


  1. NanoPattern Technologies | Efficiency, resolution, and gamut tradeoffs of varied microLED architectures

  2. UC Santa Barbara | Developments in High-Efficiency Ultra-Small Micro-LEDs Based on III-V Nitrides

  3. Toray Engineering | Total Solutions for Mass Production of Micro LED Display

  4. Q-Pixel | Tunable-Polychromatic LEDs for a paradigm shift in microLED displays

  5. Saphlux | NPQD Color Converted Micro-LED

 

To learn more about MicroLED, please join MicroLED Connect.

 

MicroLED Connect is the world’s first MicroLED Conference and Exhibition taking place on 25 & 26 September 2024 at the High Tech Campus in Eindhoven, Netherlands. Explore the preliminary agenda here.



 

1. Efficiency, resolution, and gamut trade-offs of varied microLED architectures

NanoPattern Technologies | November 2023


Here you can learn about the following key points:

  • Max EQE Current vs Pixel Size based on literature review for red, green, and blue MicroLEDs showcasing the red microLED challenge

  • AlInGaP red and InGaN blue efficiency

  • QD-MicroLED as a solution and EQE vs. Pixel Size and color gamut with and without QDs

  • Role of photodegradable ligands and NanoPattern's patented chemistry.

  • Optical density

  • Patterning



Efficiency, resolution, and gamut trade-offs of varied microLED architectures  NanoPattern Technologies | November 2023  Here you can learn about the following key points:  Max EQE Current vs Pixel Size based on literature review for red, green, and blue MicroLEDs showcasing the red microLED challenge  AlInGaP red and InGaN blue efficiency   QD-MicroLED as a solution and EQE vs. Pixel Size and color gamut with and without QDs   Role of photodegradable ligands and NanoPattern's patented chemistry.   Optical density  Patterning
MicroLED Connect Conference and Exhibition

 

2. Developments in High-Efficiency Ultra-Small Micro-LEDs Based on III-V Nitrides

UC Santa Barbara | November 2022


Here you can learn about the following key points:

  • Material choices for red, green, and blue (EQE vs Wavelength of different material system)

  • EQE of red AlGaInP at small sizes

  • Sidewall damage

  • uLED Design in GaN LEDs

  • ALD to supress leakage

  • Red InGaN MicroLED Design, Cross-section and EL vs Wavelength

  • Results for packaged microLEDs

  • Temperature stability

  • Self-aligned structures for microLED lift-off (process steps)



Developments in High-Efficiency Ultra-Small Micro-LEDs Based on III-V Nitrides  UC Santa Barbara | November 2022  Here you can learn about the following key points:  Material choices for red, green, and blue (EQE vs Wavelength of different material system)  EQE of red AlGaInP at small sizes  Sidewall damage  uLED Design in GaN LEDs  ALD to supress leakage  Red InGaN MicroLED Design, Cross-section and EL vs Wavelength  Results for packaged microLEDs  Temperature stability  Self-aligned structures for microLED lift-off (process steps)
MicroLED Connect Conference and Exhibition

 

3. Total Solutions for Mass Production of Micro LED Display

Toray Engineering | November 2023


Here you can learn about the following key points:

  • From traditional to microLEDs

  • Key challenges of microLED production including handling, repair and image discoloration

  • Solutions including Trim & Transfer + Pick & Place as well as Laser Transfer + Carrier Bonding

  • Results on bonding process

  • Selective laser repair and transfer including process and results

  • Roadmap including G4.5 machine development as well as efficient 2nd repair process



Total Solutions for Mass Production of Micro LED Display  Toray Engineering | November 2023  Here you can learn about the following key points:  From traditional to microLEDs  Key challenges of microLED production including handling, repair and image discoloration   Solutions including Trim & Transfer + Pick & Place as well as Laser Transfer + Carrier Bonding  Results on bonding process  Selective laser repair and transfer including process and results   Roadmap including G4.5 machine development as well as efficient 2nd repair process
MicroLED Connect Conference and Exhibition

 

4. Tunable-Polychromatic LEDs for a paradigm shift in microLED displays

Q-Pixel | November 2023


Here you can learn about the following key points:

  • Assembly challenge

  • Tunable polychromatic LED (TP-LED)

  • TP-LED and TP-LED Transfer

  • (2016) World's first monolithic full color LED

  • 5000 PPI pixel with TP-LED

  • 1000 PPI with TP-LED with 1 micron pixels (world record @ Nov 2023)



 Tunable-Polychromatic LEDs for a paradigm shift in microLED displays  Q-Pixel | November 2023  Here you can learn about the following key points:  Assembly challenge  Tunable polychromatic LED (TP-LED)  TP-LED and TP-LED Transfer  (2016) World's first monolithic full color LED  5000 PPI pixel with TP-LED  1000 PPI with TP-LED with 1 micron pixels (world record @ Nov 2023)
MicroLED Connect Conference and Exhibition

 

5. NPQD Color Converted Micro-LED

Saphlux | November 2022


Here you can learn about the following key points:

  • QD-MicroLED

  • NPQD Process on Nano Porous GaN

  • Results (efficiency, color gamut, intensity vs wavelength, stability at various current levels, etc)

  • RGB integration on NPQD wafer

  • Integration on microLED or CMOS based full display scalable to 12inch

  • Results and detailed benchmarking vs other solutions



NPQD Color Converted Micro-LED  Saphlux | November 2022  Here you can learn about the following key points:  QD-MicroLED  NPQD Process on Nano Porous GaN  Results (efficiency, color gamut, intensity vs wavelength, stability at various current levels, etc)  RGB integration on NPQD wafer   Integration on microLED or CMOS based full display scalable to 12inch  Results and detailed benchmarking vs other solutions
MicroLED Connect Conference and Exhibition


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