Technology behind the Gradient Color of the HUAWEI Nova 3i

Press Release   

3 September, 2018 16:52 PM

Technology behind the Gradient Color of the HUAWEI Nova 3i

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Since minimum or bezel-less displays became popular in 2017, smartphone manufacturers have been pushing panel technologies to the absolute limit, making it difficult to go further from here. As a result, the smartphone industry has shifted its attention to the back on the device, in search of new ways to bring exciting innovations to consumers. One of these new technologies was the NCVM coating, which is used to bring shifting hues to the back of the devices.

Pantone, the authoritative source of everything color-related, declared the blue-based purple, ultraviolet, the color of 2018. The HUAWEI Nova 3i’s Iris Purple variant was inspired by this tone, and when the light hits the device’s glass back it showcases the stunning colors of the sky at dusk, fluctuating between blue and purple.

The wondrous iris purple is a fusion of nature and art. What’s the secret behind this gradient color? Let’s discuss the story behind it.

Inspired by natural structural colors
Through research, scientists discovered that metallic luster of beetles’ wings, the compound eyes of insects and the rainbow sheen of seashells are all a product of structural coloration.


What is structural coloration?
Structural coloration is caused by surfaces with microscopic irregularities that bend visible light in a way that beams of light are refracted, reflected and interfere with one another. The resultant colors, dubbed structural colors, may differ from the actual color of the pigments on said surface. This also gives a certain degree of iridescence to surface, allowing the viewer to perceive different colors when looking at the object from different angles.

The gradient color of the HUAWEI Nova 3 Series is based on this principle of structural color.

When light hits the glass back of the device it goes through five layers of nano coating. When light passes through these layers, it goes through diffraction, refraction, reflection and interference, and has its red, orange, yellow and green wavelengths absorbed. As a result, our eyes can only see the rich and illusionary blue-purple gradient color.

Compared with traditional print-ink methods, the gradient color produced by NCVM process has a more delicate, rich and flexible texture. Also, it is safe, eco-friendly and the color will  never fade, making the method the ideal way to create the trendy colors.

NCVM fully showcases the craftsmanship spirit
The gradient colors on the HUAWEI nova Series is created by the NCVM process. It’s the most cutting-edge technology for generating gradient color, putting the state-of-the-art technology from the aerospace, ordnance and nuclear industries into civil use.

The technology has extremely strict requirements for the processing environment. It should be conducted in a 100 per cent dust-free plant as a single speck of dust can ruin the whole unit of coating. The entire process of coating takes four times as long as the industrial standard and with only 30-40 percent yield. This means two in three pieces of glass is discarded for failing to meet the quality standards.