Sculley seemed a wee bit tired today but he sprang to life when referring to Direct Patterning when he said" It worked, we can do it." That for me was today's highlight. That's the Grail.
"The advantages of indirect view vision systems are becoming apparent in
the modern battlefield. The transition from current direct view (photon
coupled) night vision goggle systems to indirect view (electronically
coupled) systems is dependent upon the ability to achieve comparable
resolution and power consumption to currently fielded systems. The micro
display is a key component in the indirect view system and as such must
address the resolution and power consumption issue head on. Near term
planned head mounted display (HMD) research approaches are addressing
these issues through chip level electronic integration and parallel
processing to reduce data handling requirements. Novel materials and
processes are sought to develop a high resolution micro-display with
both improved electro-optical performance and greater power efficiency.
Currently developing micro-displays for military applications use
broadband emitters that are subsequently filtered to provide the
sub-pixel red, green, and blue (RGB) colors. The color filtering
exacerbates the already difficult problem of providing sufficient
brightness in a small pixel (~15 um) micro-display architecture. Since
each sub-pixel must discard approximately 2/3 of the broadband
emissions, the resultant color filtered display luminance is reduced to
one third of the original emitter/modulator luminance. Direct patterning
emissive sub-pixels will provide a 3X increase in micro-display
brightness that translates directly into reduced power and increased
micro-display component operational life. The elimination of the color
filters will also provide increased color fidelity in the display. Three
separate, narrow band emitters will provide a color gamut that meets or
exceeds current NTSC display standards thereby providing improved
distinction and recognition of color coded data, such as maps, IFF, and
chroma-keyed image fusion algorithms. Due to the high bandwidth of 2K x
2K, full color video information, high density micro-display approaches
are anticipated to require 3D silicon architectures. These
micro-displays must exhibit the fundamental parameters of resolution,
luminance contrast, chromatic fidelity yet may not sacrifice power
efficiency, thermal management, and operational lifetime to achieve
electro-optical performance goals. These factors shall be achieved for
display luminance levels > 50 fL operation. This topic is considered
to be an enabling technology for solid state night vision system-on-chip
concepts.
"
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