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Curved, L-shape, U-shape and LED-wall frames

When the touch surface is not a flat 16:9 rectangle. Retail displays, museum interactives, LED video walls and architectural installations — built as a frame first and a product second.

Min. radius 1,200 mmSegmented profileOne controller
Project price range
$1,000 – $2,000
Made to order
MOQ1 pc
Lead time10–15 days
Request quotation Ask about volume pricing

Project price including engineering, machining and the first sample. Radius, segment count and controller channel count move the number; send a drawing for a firm quote.

Close-up of an infrared touch frame corner joint with reinforced block
How it is built

Every non-rectangular frame starts at the corner

An arc or an L is a set of straight extrusions cut at angles and joined with machined blocks. The joint is where accuracy is won or lost: a 0.3 mm step at the corner shows up as a dead band on the touch surface, so corners are milled, not bent.

Frame types

Four shapes we build regularly

Curved (convex / concave)

Segmented aluminium chord frame following a fixed radius, from 1,200 mm upward. Used on curved signage, cockpit-style consoles and wrap-around retail displays. Each segment carries its own LED chain and the controller interpolates across the joints.

L-shape and U-shape

Two or three flat faces on one controller. Common in corner kiosks, control desks and exhibition walls where two people interact from different sides. Software can see one surface or independent regions.

LED wall / video wall

Built to the LED module grid instead of a panel. No glass, no LCD — beams cross open air, so the frame carries its own mounting rail and the LED power budget is calculated per install.

Projection and interactive surface

A frame around a projected image rather than a display. Used in museums, showrooms and education. The frame is calibrated to the projector's throw, so we need the projected area, not the screen diagonal.

What to call it

Curved touch frame, LED touch frame, or just a custom touch frame

Three labels, one order process. A curved touch frame is a segmented chord frame on a fixed radius. An LED touch frame is built to the LED module grid rather than a glass panel, so the beams cross open air and the frame carries its own mounting rail. Anything that is neither a flat rectangle nor one of those two gets filed as a custom touch frame, and that is fine — the drawing is what we work from, not the name.

All three run on the same extrusion and the same controller family as the standard range, so a curved build is not a new product line. It is a different cut list, more joints and more engineering hours, which is why pricing is per project rather than per size. Flat custom frames →  ·  Terminology →

Limits

What we will tell you not to do

A curved frame is an engineering project, not a catalogue item. These are the four cases where we push back.

Radius under 1,200 mm. Below this the beam crossing angle gets too shallow and accuracy collapses at the corners. Use capacitive on a formed glass instead.
More than four faces. Five or more segments means multiple controllers and a synchronisation problem your software has to solve. It is possible, but it is a different project.
Outdoor curved. Sun load on a curved surface is uneven, and the frame expands asymmetrically. We add a shadow mask and a wider gap, which changes the touch feel.
Curved glass with IR. The glass has to be pre-formed, and the gap between glass and frame varies across the bend. Expect a 3–5 mm tolerance budget instead of 1 mm.
FAQ

Curved and LED frame questions

How does touch work on a curved surface?
The LED tubes follow the curve inside a segmented aluminium profile. Each side is built as a chord with its own LED chain, and the controller is calibrated for the resulting geometry. Touch accuracy is the same ±2 mm as a flat frame, but the minimum bend radius is about 1,200 mm — tighter than that and the beam geometry breaks down.
Can you build an L-shape or U-shape frame?
Yes. L and U frames are two or three flat frames joined with a corner block, sharing one controller. Each face is addressed as a separate touch region or as one continuous surface, depending on what your software expects.
What is different about an LED-wall frame?
The frame is built to the LED module grid rather than to a 16:9 panel, so the active area is usually larger and the aspect can be extreme — 3:1, 5:1 or a non-rectangular outline. There is no glass and no LCD behind it, so the frame carries its own mounting rail and the beams cross open air. That changes the LED power budget, which is why we quote it per project.
What is the lead time and MOQ?
MOQ is 1 pc for a sample. Lead time is 10–15 working days for a first unit, because the profile is machined per order. A project typically starts at $1,000 including engineering and the first sample.

Send a drawing of the shape, not the size.

For a curved or LED frame the drawing matters more than the diagonal. A dimensioned sketch of the surface, the radius and the mounting plane is enough to quote.

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Thanks — your request is with our engineering desk.
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Or email us directly at info@wcimci.com. Drawings in DWG, STEP, PDF or DXF are all fine.

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