Hyper Dimming Technology

What is it?

Under certain conditions, monitors may be required to be adjusted to lower-than-normal brightness levels. “Hyper Dimming” technology provides wider brightness adjustment levels to meet dim-to-black requirements. The high sensitivity of fully adjustable backlight control makes the product ideal for day-to-night applications.

How does it work?

“Hyper Dimming” technology applies the new PWM (Pulse Width Modulation) method that can expand dimming ranges wider than previous analog methods. Traditional methods of dimming CCFLs are to either adjust the lamp current or to regulate the average current feeding the CCFL inverter. This dimming method is what is referred to as “analog dimming”. This manner provides high efficiency circuits, but either limits dimming range or violates lamp specifications to achieve wide dimming ratios.

The PWM technology is used to overcome this problem; hence expanding the dimming range. We simply pulse the backlight at the full rated lamp current, and modulate its intensity by varying the percent of time that the lamp is operating at the full rated current. PWM dimming can significantly extend the dimming range capabilities. PWM control of multiple lamps eliminates the typical problem of one lamp extinguishing prior to others at low intensities. The lamp layout and parasitic are no longer limitations on the display dimming capabilities.

With the user-friendly VR knob, users have true dim-to-black capability, which allows for night vision operation. Combined with a high quality TFT LCD panel with a smoothly dimmable backlight offers a crisp and excellent contrast in images, which fills most marine requirements.

Technology/Function Diagrams

PWM controls the duty cycle from 0V to 5V (or 0V to 3.3V) for dimming ratio.

Benefits

  • Dimming range (Duty cycle: 0%~100%) provides the widest brightness control ratio.
  • User-friendly dim-to-black VR knob adjustment for ease of operation.
  • Integration of other display technology such as sunlight readable or anti-glare coating ensures the great readability for daytime and night time application.

Applications

  • Industrial/Outdoor Use
  • Navigation/Ship Automation
  • Aero Space Application
  • Military

Products

“Hyper Dimming” technology is now available for 8.4”, 10.4”, 12.1”, 15”, 17”, and 19” LCD with specific panel options.