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Advanced Illumination: Why RGBW Matters
When clients want color-changing signs, they usually ask for RGB. We advise against it. If you try to mix Red, Green, and Blue to create "White," you get a nasty surprise: "rainbow shadows." As the light spills out the back of the backlit letter, the colors separate at the edges, creating a messy red-and-blue fringe.
We strictly use RGBW (Red, Green, Blue, + White) chips. This dedicated white diode allows your backlit letter to produce crisp, clean white light during the day, while still offering the party colors at night, without those ugly separated shadows.
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Solid-Cut Precision for Small Designs
Size limits are another reality of manufacturing. You cannot weld a metal shell for a logo that is only 3 inches tall; the welding torch is too big. For these tiny precision projects, we don't build a hollow shell. Instead, we machine the entire backlit letter out of a solid block of 30mm thick translucent acrylic.
We then paint the face and sides opaque to block the light. This creates a "Solid-Cut" backlit letter that feels incredibly dense and expensive, like a heavy paperweight, which is perfect for eye-level signage where people might touch the letters.
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Environmental Compliance & Light Control
In many residential zones, "light trespass" is a legal issue. When your signboard is bright or has a large lighting angle, the light will penetrate through bedroom windows. We engineer the "cutoff angle" by backlit letter-to-wall distance design.
By reducing the backlit letters' proximity to the wall (say, 15 mm as opposed to 30 mm), we are able to confine the light to the text and around it, without polluting the surrounding environment. This control keeps your backlit letters in compliance with environmental laws and still makes them look good.
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Frequently Asked Questions
Why is RGBW better than standard RGB for signage?
RGBW includes a dedicated white diode, which prevents "rainbow shadows"—the messy color separation at the edges often seen when standard RGB tries to mix colors to create white.
How are very small logos or letters manufactured?
Since small letters cannot be welded, we use "Solid-Cut" technology, machining the letters from a solid 30mm thick block of translucent acrylic for maximum precision and durability.
What is "light trespass" in signage?
Light trespass occurs when signage light spills into unintended areas, such as residential windows. It is often a legal issue that requires careful engineering to control.
How do you control the "cutoff angle" of the lighting?
We adjust the distance between the backlit letters and the wall. Reducing this gap (e.g., from 30mm to 15mm) confines the light specifically to the area around the text.
Are Solid-Cut letters suitable for indoor use?
Yes, they are ideal for eye-level signage. Because they are machined from solid acrylic, they feel dense and high-quality, making them perfect for areas where people might touch the sign.
Does the RGBW chip allow for daytime use?
Absolutely. The dedicated white diode provides crisp, clean white light for daytime visibility, while the RGB components allow for vibrant colors at night.
