What is this technology?
Under some specific user conditions, it will require that the monitor can be adjusted to a lower brightness level than normal. The “Hyper Dimming” technology provides a wider brightness adjustment level combined with an excellent appearance to meet the dim-to-black requirement. The high sensitivity of fully adjustable backlight control makes the product ideal for the day and night environment.
How does this technology work?
The "Hyper Dimming" technology applies the new "PWM" method that expands dimming range than previous "Analog" methods. The traditional techniques for dimming CCFL either adjust the lamp current or regulate the average current feeding the CCFL inverter. This dimming method is referred to as "analog dimming." This provides the highest efficiency circuits but either limit dimming range or violates lamp specifications to achieve wide dimming ratios. The "Pulse Width Modulation" (PWM) technology is used to overcome this problem, expanding the dimming range.
We pulse the backlight at the full rated lamp current and modulate intensity by varying the percent of the lamp 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 before others at low intensities. Lamp layout and parasitics are no longer limitations on the display dimming capabilities.
With the user-friendly VR knob, users have true dim-to-black, which allows for night vision operation. Combining with the high-quality TFT LCD panel with a smoothly dimmable backlight offer crisp and excellent contrast images fulfill most of the marine requirement.
Technology/ Function Diagrams
PWM controls the duty cycle from 0V to 5V (or 0V to 3.3V) for dimming ratio.
The lamp current waveform with the PWM circuit set at less than 100%
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 great readability for daytime and nighttime application.
- Industrial / Outdoor Use
- Navigation / Ship Automation
- Aero Space Application
- Defence Application