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Thick-film dielectric electroluminescent technology

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Title: Thick-film dielectric electroluminescent technology  
Author: World Heritage Encyclopedia
Language: English
Subject: Next generation of display technology, Holographic display, Telescopic pixel display, Time-multiplexed optical shutter, Quantum dot display
Collection: Display Technology, Emerging Technologies, Lighting, Luminescence
Publisher: World Heritage Encyclopedia

Thick-film dielectric electroluminescent technology

Thick-film dielectric electroluminescent (TDEL) technology is a

  • iFire's TDEL technology page
  • C-Net news article about the technology
  • Globe and Mail article about iFire and the technology.

External links

  1. ^ Westaim Corporation message from the board, February 8, 2007 retrieved 2011 May 11


  • Unavailable and production stalled


  • Fast video response time and long life.
  • The display's simple solid state architecture, insensitivity to operating temperature extremes.
  • Scalability and low-cost manufacturing.


iFire ceased research in 2007 and all physical and intellectual property assets were sold in 2009.

Following pilot manufacturing, iFire expected to begin commercial volume production with capacity in the range of 250,000 units per year. Initial planning work for a volume facility is underway and iFire is reviewing its commercialization strategy with potential manufacturing partners.

iFire claims TDEL also has picture quality similar to CRT TVs. The displays are brighter, more efficient, more resistant to contamination during manufacturing, and more resistant to electrical breakdown than their thin-film counterpart (TFEL), but with less dark contrast and contrast in bright lighting. iFire has moved on from a 17-inch prototype to a 34-inch full-colour display.

Besides its durability, TDEL's claim to fame is its low cost of production. According to the makers, TDEL display would have half the capital and manufacturing costs of a similar LCD or PDP.

Characteristics and market place

Color By Blue is based on the physics of HDTV systems.

In 2003, iFire announced the development of a process, known as Color By Blue (CBB), which further simplified the already simple manufacturing process for TDEL. The simpler Color by Blue manufacturing process was made possible by performance improvements to iFire’s blue inorganic phosphor. The Color By Blue process achieves luminance and color superior to the previous triple pattern process, as well as increased contrast, better grayscale rendition and exceptional color uniformity across the panel.

Color By Blue

The TDEL structure is made on a glass or other inexpensive substrate consisting of a thick-film dielectric layer and a thin-film phosphor layer squished between two sets of electrodes to make a matrix of pixels. It seems complex, but basically it works when phosphors emit light in the presence of an electric field. And because TDEL uses solid-state phosphors instead of liquids (as with LCDs), gases (as with PDP) or vacuum (as with the CRT), it is probably the most sturdy new technology, less prone to shock and breakage during shipping.



  • Technology 1
    • Color By Blue 1.1
  • Characteristics and market place 2
    • Pros 2.1
    • Cons 2.2
  • References 3
  • External links 4


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