INFiLED COB LED Displays Replace Projectors in French Lecture Theatre
2026-11-11 · via AV Magazine
KEDGE Business School's Marseille campus has replaced the three laser projectors in its main lecture theatre with three INFiLED WT Series LED displays, according to a release from AV Magazine. The integrator on the project, On Tech France, cites fading contrast and washed-out colour under house lights as the reason the school moved away from projection.
For anyone managing teaching or presentation spaces, the pitch here is familiar: direct-view LED removes the need to dim lights, which projection has never been able to do without losing contrast. That tradeoff has pushed LED into more boardrooms, auditoriums and classrooms over the past few years, and this installation is another data point for that shift rather than something new in itself.
The school kept its existing three-screen layout, so lecturers can still run slides on one surface, a document camera on a second and video on a third. The centre display measures 6.0m by 3.4m at 3,840 by 2,160 pixels, flanked by two full HD screens at 1,920 by 1,080. All three use INFiLED's WT Series flip-chip COB panels at a 1.56mm pixel pitch, built across 150 cabinets measuring 600mm by 337.5mm each, for a combined 12.4 million pixels over just over 30 square metres.
INFiLED says it built all three displays in a single production run for colour matching, then preassembled and calibrated them at the factory before shipping. That kind of batch production is standard practice for COB manufacturers chasing seam and colour consistency across adjacent displays, and it is worth noting the release does not say how long calibration held up after installation or what ongoing maintenance looks like.
On power, INFiLED cites a maximum draw of about 9kW across the 150 cabinets, dropping to roughly 3kW in normal operation. The company attributes this to its ColdLED approach, which combines flip-chip assembly, common-cathode driving, 60nm driver ICs and a revised PCB layout. The release does not give a comparison figure for the previous projector setup, so operators weighing total cost of ownership will need to do that math themselves.
AV director Pierre Duffaud says the main technical challenge was producing a large image at high enough resolution to stay sharp and readable from every seat, and that lecturers have reported rediscovering detail in their own slides now that the room no longer needs to be darkened. The school says the space now also handles conferences, student presentations and video conferencing through the same system.
What the release does not cover: pricing, installation timeline, and how the system compares on a cost basis to a projector refresh rather than a full LED replacement. For integrators and facilities teams, the more useful takeaway is the pixel pitch and cabinet size data, which gives a reasonably concrete benchmark for similarly sized teaching spaces considering a similar move.
The announcement in full
Reproduced from AV Magazine for reference. Digital Signage Magazine did not write the text below.
By AV Magazine in Displays , Education , Europe November 11, 2026 0
The projection system in the lecture theatre at KEDGE Business School’s Marseille campus has been replaced with three of the manfuacturers WT Series flip-chip COB displays with a 1.56mm pixel pitch.
French-based KEDGE Business School has replaced the projection system in the lecture theatre at its Marseille campus with three INFiLED WT Series LED displays.
The lecture theatre had previously run on three laser projectors, each with their own screen. The arrangement had served the school for years, but contrast fell away as soon as the room lights went up, small text became hard to read from the back rows, and colour washed out in photographs, video and detailed diagrams.
Laurent Bonhoure, president of On Tech France, the integrator tasked with the project, says: “Keeping brightness and colour consistent across three projected images was a constant battle.
“COB was the decisive factor. It gives deep blacks, high contrast, accurate colour and a protected surface that suits a busy teaching space.”
The new system retains the three-screen layout, so lecturers can still run slides on one surface, a document camera on another and video on a third.
The central display measures 6.0m by 3.4m, with 3,840 by 2,160 pixels, flanked by two full HD displays at 1,920 by 1,080. All three use WT Series flip-chip COB panels with a 1.56mm pixel pitch.
Across 150 cabinets of 600mm by 337.5mm, the installation covers slightly over 30 sq metres, with 12.4 million pixels in total.
INFiLED built all three displays in a single production batch for colour consistency, then preassembled and calibrated them at the factory before shipping.
The WT Series’ slim profile meant the three LED displays could occupy the space three projection screens had vacated without reworking the room.
Pierre Duffaud, KEDGE Business School’s AV director, says: “Our main challenge was creating a very large image at a high enough resolution that content stayed sharp and readable from every seat in the lecture heatre.”
The single most practical consequence is that the room no longer has to be darkened for anyone to read what is on screen.
Immediate improvement “The change was immediate. All three screens are bright, sharp and perfectly matched, even with every light in the room on. Lecturers no longer have to dim the lights, so students can take notes and stay engaged.
“Plus, text and fine detail stay readable at the back of the room. Several lecturers have told me they feel as though they rediscovered their own slides.”
The project’s sustainability requirements are addressed by how the panels are driven. INFiLED’s ColdLED technology combines flip-chip LED assembly, common-cathode driving, 60nm driver ICs and a redesigned PCB layout.
Across the 150 cabinets, the installation draws a maximum of about 9kW and closer to 3kW in normal operation.
The installation has created a space that does more than it could before. Lectures, conferences, student presentations, video conferences and school events all now run through the same system, and the image is clear for the people in the room and for anyone joining remotely.
“Fine-pitch LED adds the most value in lecture theatres and large teaching spaces that need a big image with high brightness and very high resolution, as that is what text, charts and detailed content demand,” says Duffaud.
“This project showed us that it is a credible and durable alternative to projection in higher education, and we see it as a long-term foundation for our teaching spaces.”