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High-tech Adhesives for Mini- and Micro-LEDs

High-tech Adhesives for Mini- and Micro-LEDs

High-tech Adhesives for Mini- and Micro-LEDs

Product catalog summary
Introduction to Display Technologies
Self-emissive display technologies offer benefits such as efficient power consumption, increased robustness, higher brightness, and integrated sensors. These features are crucial for AR, VR devices, and automotive displays, positioning them in the premium market segment.

Backlit Display Innovations
MiniLEDs are increasingly used in backlit units, requiring new materials and technologies beyond traditional soldering. DELO's directional conductive adhesives provide both electrical and mechanical connections on flexible and rigid substrates, preventing short circuits and enabling innovative display designs.

About DELO
DELO, a German family-owned company, specializes in developing functional materials for LED packaging and display applications. Their adhesive portfolio supports the miniaturization of LED dice and can be customized for specific customer needs.

Adhesive Properties for LED Bonding
  • Conductive adhesives for electrical and mechanical connections
  • Low bondline thickness of less than 15 µm
  • Pitch of less than 30 µm
  • Tailored dispensing methods like stencil printing, dipping, and stamping
  • Optimized for contact materials such as gold, silver, and copper
  • Standard portfolio and in-house testing available


In-House Testing Methods
DELO offers testing for LED dice with edge lengths over 80 µm using the pick-and-place method. Their test board compares adhesive reliability in single and daisy-chain measurements, and automated dispensing methods are analyzed. Reliability testing includes conditions like +85°C at 85% relative humidity for up to 1,000 hours.

Additional Solutions
  • Underflow material
  • Corner fill material
  • Infrared (IR) coatings

For further information, DELO provides a white paper on electrical and mechanical contacting of LEDs using conductive adhesive.
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Catalog excerpts

High-tech Adhesives for Mini- and Micro-LEDs-1

HIGH-TECH ADHESIVES New display technologies Self-emissive display technologies come with their benefits, including more efficient power consumption, increased robustness, higher brightness, and display-inlaid sensors. These aspects are important for AR and VR devices, as well as automotive interior displays, and have the potential to set these displays apart in the premium segment. For backlit units, miniLEDs are appearing more and more, demanding new materials and technologies besides the usual soldering process. DELOs directional conductive adhesives enable both an electrical and a mechanical connection on flexible and rigid substrates, respectively. This material is inherently electrically conductive in one direction. Its proof-of-concept shows that adhesives or functional polymers can prevent short circuits and thus enable wider openings in printing mask designs. This, in turn, allows designers and engineers to develop innovative display products and applications. About DELO DELO is a family-owned company based in Germany, with a long-proven track record in developing innovative functional materials for LED packaging and display applications. Discuss your project and your requirements with our experts: The continued refinement of our adhesive portfolio, plus our network of equipment manufacturers, chip suppliers, panel makers and research institutions, facilitate alternative processes for the ongoing miniaturization of LED dice. Moreover, adhesive properties can also be tailored to customer-specific processes and needs.

 Open the catalog to page 1
High-tech Adhesives for Mini- and Micro-LEDs-2

Bonding mini- & microLEDs to substrate Electrical and mechanical contacting of LEDs using conductive adhesive Adhesive properties Electrical connection › Conductive adhesives for electrical & mechanical connection › Low bondline thickness of < 15 µm › Pitch of < 30 µm › Tailored dispensing possible, e. g., stencil printing, dipping, and stamping › Optimized for contact materials, e. g., gold, silver, and copper › Standard portfolio available › In-house testing possible Additional solutions › Underflow material › Corner fill material › Infrared (IR) coatings In-house testing methods for adhesive...

 Open the catalog to page 2
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