NHD-0420CW-AW3

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NHD-0420CW-AW3 Application Field and Working Principle

The NHD-0420CW-AW3 is a Character/Number Display Module in the LCD, OLED Character and Numeric category. It is based on a 0.42” reflective LCD display and is commonly used in situations where ultra low power consumption requirements are paramount. It is suitable for applications such as instrumentation, medical equipment, industrial applications and Digital Still Camera (DSC) screens.

Overview of NHD-0420CW-AW3

The NHD-0420CW-AW3 is a compact character/number display module measuring 0.42" (10.67mm) in width and 0.40" (10.16mm) in height. It has a viewing angle of 6° and is supported by a built-in controller for easy interfacing. It features a reflector for improved contrast of the OLED or LCD display, and a black and white reverse image for improved visibility in direct sunlight.

For easy interaction with the display, the NHD-0420CW-AW3 offers a 4-way navigational switch, 2x20 character display, 8x12 pixel graphic capabilities, 4x8 character display and LED backlight. A FPC connector is also provided to aid in connecting the module to the required microcontroller or other circuit board.

In addition, the NHD-0420CW-AW3 also includes a temperature compensation feature to ensure better contrast even under changing temperature conditions. It also features a high contrast display for improved visibility in both direct and indirect lighting. Finally, the module also supports various kinds of power supply, including 2.7 to 5 Volt DC, 0.2 ~ 2A microdrive (M-Drive) and 3V ~ 12V DC.

Working Principle of NHD-0420CW-AW3

The NHD-0420CW-AW3 uses a liquid crystal display (LCD) or organic light emitting diode (OLED) to create the image on the display. This technology works by applying voltage across the liquid crystals, which in turn causes them to rotate and orient according to the applied electric field. This rotation causes the liquid crystal molecules to absorb and reflect light of different wavelengths, creating a visible image on the display.

The NHD-0420CW-AW3 is capable of displaying text in either ASCII or 8-bit codes, as well as being able to store a large amount of data due to its onboard RAM. It is also capable of displaying graphics, up to 8x12 pixels in size, and has the ability to switch the contrast between low and high levels depending on the ambient lighting. It is also able to switch between different screen modes, with options for text, graphics and dot-matrix.

Conclusion

The NHD-0420CW-AW3 is a versatile character/number display module that is perfect for a variety of applications, including instrumentation, medical equipment, industrial applications and digital still camera (DSC) screens. It has an impressive range of features, such as its 4-way navigational switch and LED backlight, and is capable of displaying text and graphics with ease. The module also offers temperature compensation, reverse imaging mode and adjustable contrast, all of which provide improved visibility in any environment. Finally, the NHD-0420CW-AW3 is able to switch between an LCD or OLED display, meaning that it can be used in a great variety of environments.

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