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Traditional coverplates often are not treated with anti-reflective coatings and there is an air-gap between the display and coverplate. This results in multiple surfaces with high reflectivity—as much as 13.5 percent reflectance, the company says. By bonding the front substrate directly to the display, direct bonding eliminates the air gap and increases display contrast ratio by 400 percent for optimum outdoor viewing.
Apollo Display Technologies (Ronkonkoma, N.Y.) has developed a way to make LED-backlit thin film transistor (TFT) LCDs compatible with night vision imaging systems. It furnishes VGA and XGA resolution TFT LCDs backlit by LED rails that are addressable via the company's standard PRISMA II industrial controller board to switch between day and night modes.
The LED rails replace coated CCFL lamps which affect the daytime appearance of the display, says Richard McKay, Managing Director of Apollo. "Switching back and forth between different banks of LEDs to provide a seamless transition between day and night modes is possible."