Low power display technologies have made rapid strides in the electronics sector in recent years. As a result, companies and professionals who need to consider low-power display technologies for their products and solutions have a variety of options to choose from, each with its pros and cons.
Choosing the right display ultimately depends on the intended use or application; for example, different displays might be used for portable electronic devices, consumer electronics, or industrial solutions. In this article, we will discuss the most prevalent low-power display technologies, and consider the pros and cons of each.
A low-power display is designed to operate with minimal energy consumption while maintaining functionality. Low-power displays are designed to consume low levels of energy. which is often achieved using the concept of bistability, which means energy is only consumed when the image on the display changes, while no energy (or ultra-low energy) is consumed during static usage (same image being displayed during a period).
Most low-power displays are also reflective displays, meaning they rely on ambient light rather than an internal backlight. Instead of emitting light, reflective displays bounce light off their surface, similar to how printed paper reflects light for readability. This characteristic further enhances their energy efficiency. Read more about reflective displays.
The demand for low-power displays is growing as industries seek to reduce energy consumption and reduce environmental impact. Moreover, customers are increasingly asking for wireless products without being connected to a power grid, or the need for frequent charging. A low-power display is perfect when trying to improve a product's battery life, by drawing the least amount of power possible during use.
Different markets and applications typically use different types of displays. The most popular low-power display technologies available on the market are LCDs and e-paper. For a while, LCDs were the only choice available for low-power displays. That was until two exciting e-paper options arrived into the display market: electrophoretic displays and electrochromic displays.
This article will discuss these three low-power display technologies in greater detail and compare different features, such as power consumption, display quality, and more.
Reflective LCDs are common in consumer electronics because they: consume little power, are easy to produce and are cost-effective. Low-power seven-segment displays are widely used in calculators, digital clocks, radios, microwave ovens, and washing machines, for example. Reflective LCDs work by reflecting ambient light - such as natural light - from a reflective layer, back to the viewer.
Electrophoretic display technology has a paper-like contrast appearance. This means that it replicates the appearance of ordinary ink on paper. This display technology is popular because of its contrast, readability, thickness, low-power consumption, and flexibility. It is widely used in e-readers like Amazon's Kindle, real-time bus arrival information, electronic shelf labels (ESLs), , among other applications. When the display is powered, charged ink particles rise to the top of the display to create images.
Electrochromic e-paper displays have several advantages when compared with other low-power display technologies. Like LCDs and electrophoretic displays, electrochromic displays are reflective, which means they work by reflecting ambient light. When a voltage is applied, the display will change color through specific electrochemical reactions. Electrochromic e-paper displays are ultra-low-power, lightweight, thin, flexible, energy-efficient, and cost-effective to produce and operate. In addition, electrochromic e-paper displays are easily customizable to specific product, use and business needs. As a result, these e-paper displays have the potential to be widely used in areas as diverse as:
To explore in further detail, we’ve put together a direct comparison of the power consumption of reflective LCDs vs. electrophoretic vs. electrochromic displays.
At Ynvisible, we offer full end-to-end solutions for prototyping and producing low-power display solutions for a wide range of unique applications. To explore how Ynvisible’s low-power e-paper displays could work for your product ideas, why not get started with our e-paper display kit to see how it works?
Want to discuss more? Contact Ynvisible today to learn more about our ultra-low-power e-paper display solutions.
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