Quick answer: Traditional neon signs are made by heating and bending glass tubes, sealing an electrode into each end, filling the tube with neon or argon gas, and running high voltage through it. Modern LED neon signs are made by shaping flexible LED neon tubing onto a laser-cut clear acrylic backing board, then wiring it to a low-voltage power supply and dimmer. For homes, bars, game rooms and party spaces, LED neon is easier to install, safer to handle and far less fragile than glass.
Neon signs are one of the fastest ways to add color, personality and atmosphere to a room. You will find them in bedrooms, entertainment rooms, home bars, restaurants and storefronts. But the way they are actually built depends entirely on which kind of neon you are looking at, so it is worth understanding both.
How Do Neon Signs Actually Work?
Before looking at how a sign is assembled, it helps to know where the light itself comes from. Glass neon and LED neon look similar when they are switched on, but they produce light in completely different ways.
How traditional glass neon produces light
A glass neon tube is a sealed vacuum tube with a metal electrode at each end. Almost all the air is pumped out, and a small amount of gas is added in its place. A transformer then pushes several thousand volts across the tube, which strips electrons from the gas atoms. As those atoms settle back to their normal state, they release the energy as visible light.
The gas decides the color. Pure neon gas glows the familiar red-orange that gave the technology its name. Argon mixed with a drop of mercury glows blue, and coating the inside of the tube with different phosphor powders turns that blue into greens, pinks, yellows and whites. This is why a real glass neon sign with many colors needs many separate tubes, each one bent, pumped and sealed by hand.
How LED neon produces light
LED neon contains no gas and no vacuum at all. Inside the tubing sits a strip of small surface-mount LED chips running on 12V DC. When current passes through the semiconductor in each chip, the chip emits light directly, with very little wasted heat.
On its own, a row of LEDs would look like a line of bright dots. What makes it read as neon is the jacket around it: a flexible silicone tube that diffuses the light into one smooth, continuous glowing line. Silicone matters here — it stays flexible instead of yellowing and cracking the way cheaper PVC does.
The power draw is small. Voltleds tubing runs at roughly 8 watts per meter, so a medium sign using around 1.5 meters of tubing pulls about 12 watts — less than a laptop charger, even if you leave it on all evening. Change the chip and you change the color, which is why a single LED neon sign can carry several colors without adding weight, tubes or complexity.
Glass Neon vs LED Neon: Side-by-Side
Both are called neon signs, and in a photo they can be hard to tell apart. In daily use they behave very differently.
| Traditional Glass Neon | LED Neon | |
|---|---|---|
| Light source | Ionized neon or argon gas | LED chips in a diffusing tube |
| Power | High voltage via transformer | 12V DC adapter, plug-in (~8W per meter) |
| Tube material | Hand-bent glass | Flexible silicone on 6mm acrylic |
| Weight | Heavy; needs solid wall fixing | Light; hangs on standard fixings |
| Durability | Fragile, breaks on impact | Bendable, shatterproof tubing |
| Heat | Tube gets noticeably warm | Stays cool to the touch |
| Dimming | Rarely dimmable | Remote dimmer included |
| Repair | Specialist workshop only | Usually a replacement part |
| Lifespan | Around 8–15 years with maintenance | Rated up to 50,000 hours |
| Outdoor use | Needs a sealed housing | Waterproof versions available to order |
| Best for | Vintage storefronts, diners, collectors | Home decor, gifts, modern interiors |
If you want the full breakdown of running costs and expected life, we cover it in our guide to how long neon signs last.
What Are LED Neon Signs Made Of?
Strip a finished LED neon sign back to its parts and there are only a handful of components:
- Flexible silicone LED neon tubing — the glowing element, cut and bent to follow the design, drawing about 8W per meter
- 6mm clear acrylic backing board — laser-cut to shape, thick enough to stay rigid without visibly bowing on wide signs
- 12V power supply — a UL-certified plug-in adapter, not a high-voltage transformer
- Wiring, connectors and dimmer — routed behind the board and out through the cable exit
- Mounting hardware — screws, standoffs or hanging chain, depending on the size
That is the whole reason LED neon signs are practical for a home. There is no gas, no vacuum pump and no high-voltage supply, so the finished sign is light enough to ship in a box and simple enough to hang yourself.
Step 1: Creating the Design
Every LED neon sign starts as a flat design file. It might be a word, a quote, a logo-style graphic or a decorative shape.
The design has to do two things at once: stay simple enough for tubing to follow in continuous runs, and stay bold enough to read clearly once it is glowing. Very thin script fonts and tight interior detail are where designs usually fall down.
Short, room-specific phrases work best, which is why designs like GAME ON, HAPPY HOUR, MAN CAVE and IT'S 5:00 SOMEWHERE keep selling. If you have your own wording in mind, our custom text neon sign tool starts at this exact step.
Step 2: Cutting the Acrylic Backing Board
Once the artwork is approved, the acrylic backing is cut. Some signs use a plain rectangle or circle, while others use a cut-to-shape outline that follows the letters, so the board almost disappears against the wall.
The board is what gives the sign its structure. It carries the weight of the tubing, protects the wiring and provides the mounting points you will use to hang it.
Step 3: Shaping and Fixing the Tubing
This is the part that is still done by hand. The flexible tubing is bent along the design template and fixed to the board, curve by curve, letter by letter.
Clean, even bends are what separate a good sign from a cheap one. Consistent spacing keeps the glow uniform, and tight corners keep letterforms readable rather than rounded off into mush.
Step 4: Wiring the Power and Dimmer
With the tubing fixed, the wiring is routed behind the board and joined to the power cable and dimmer.
For home use, almost every LED neon sign is a plug-in product. No gas filling, no transformer, no hardwiring. A finished sign arrives with a power adapter, a remote dimmer and mounting accessories in the box.
The dimmer matters more than people expect. In a bedroom or a home bar, the same sign needs to work as a bright feature during a party and as low ambient light at midnight.
Step 5: Testing and Packing
Before anything is boxed, the sign is powered up and checked: every segment lights, the colors match the proof, and the dimmer runs smoothly through its full range.
The board is also inspected for loose wiring, uneven glow and surface marks. Then it is packed with foam protection, since the acrylic is the part most likely to be damaged in transit.
How Long Does It Take to Make a Custom LED Neon Sign?
Ready-made designs ship straight from stock. A custom sign is built to order, so it runs on a short production timeline:
- Design proof — you send your text, font and color, and receive a visual mockup to approve
- Revisions — a round or two of adjustments to spacing, size and color
- Production: 3–5 days — cutting the acrylic, shaping the tubing, wiring, the hand-built stage
- Testing and packing — power-on check, QC and protective packaging
- Shipping: 1–2 weeks — delivery to your door
In practice that means most custom orders land somewhere between two and three weeks from approved proof to hanging on the wall, with shipping taking longer than the build itself. If you are ordering for a birthday, wedding or store opening, work backwards from the date and allow a buffer.
The single best way to speed a custom order up is at the start: send clear wording, your preferred font and a reference image, so the first proof needs fewer rounds. You can begin one on our custom neon sign page, and if you are budgeting first, our neon sign price guide breaks down what drives the cost.
Why Are LED Neon Signs So Popular?
LED neon signs sit in a useful gap: they are decoration, lighting and personality in one object, at a price that makes them a realistic gift.
They turn up most often in bedrooms, game rooms, home bars, man caves, garages, dorm rooms and small business spaces. Because they come in a wide range of colors, sizes and designs, it is easy to find one that fits an existing room rather than fighting it.
Can You Make a Neon Sign Yourself?
DIY LED neon kits exist and they are genuinely fun for simple shapes. If you want a heart, a lightning bolt or a single short word, a kit will get you there.
Detailed lettering is a different job. Clean typography needs an accurate template, steady bending, tidy wiring and tubing that holds its shape, and that is where most home attempts start to look homemade. For anything you plan to give as a gift or hang on a main wall, a finished sign is usually the better call.
Frequently Asked Questions
Are LED neon signs real neon?
No. Real neon means glass tubes filled with neon or argon gas. LED neon uses LED chips inside flexible tubing to reproduce the same continuous glow with a lighter, safer and more durable build.
Do LED neon signs get hot?
They stay far cooler than glass neon. The tubing is usually only slightly warm after hours of use, which is why LED neon is safe for bedrooms, dorm rooms and shelves near fabric or paper.
Are LED neon signs easy to install?
Yes. The acrylic board comes pre-drilled and the sign ships with mounting accessories, so no electrician is needed. Our neon sign hanging guide walks through both wall-mount and hanging methods.
Are LED neon signs better than glass neon?
For home decor, yes, on almost every practical measure: weight, durability, running cost, dimming and shipping. Glass neon still wins on authenticity, which is why it remains the choice for vintage storefronts, diners and collectors.
Can LED neon signs be used outdoors?
Only if the sign is built for it. We make both indoor and waterproof versions, so if the sign is going on a patio, a storefront or an unheated garage, ask for the waterproof build rather than using a standard indoor sign outside.
How long do LED neon signs last?
The tubing is rated for up to 50,000 hours, which is roughly 17 years at eight hours a day. In practice the adapter or connectors usually need attention before the LEDs do, and LED neon dims gradually rather than burning out all at once. Our lifespan and care guide covers what shortens it.
Final Thoughts
So, how are neon signs made? Traditional neon is hand-bent glass filled with gas and driven by high voltage. LED neon is flexible tubing shaped onto laser-cut acrylic and driven by a low-voltage plug-in adapter, reaching the same glow with none of the fragility.
For home decor, LED neon is the practical choice. Voltleds signs are built with silicone tubing on a 6mm acrylic backing, run on a 12V UL-certified adapter, and arrive ready to mount with a remote dimmer, power cord and mounting accessories.
Looking for a ready-made design? Browse our bar neon signs for home bars and cocktail corners, our game room neon signs for setups and streaming walls, or our business neon signs for storefronts, restaurants and studios. Want your own wording instead? Start a custom neon sign.