TRANG CHỦ > Case Study > Bảo tàng Johnny Cash — Nâng cấp cầu thang bằng đèn LED
Bài viết April 2026 · Tennessee, USA

Retrofitting P1.8 COB LED Stairs
at the Johnny Cash Museum

Integrating digital displays into new construction is straightforward. But embedding high-definition LED screens into a fully finished, high-traffic heritage site without altering the existing structure — that requires engineering. The Johnny Cash Museum asked DOIT VISION to transform a central 12-step wooden staircase into a dynamic digital canvas. Using value engineering with standard 320×160mm COB modules, ultra-slim aluminum profiles, and impact-resistant epoxy encapsulation, the entire system was designed, manufactured, and delivered in just 15 days.

Phạm vi dự án
Các bước 12
P1.8 COB · 320×160mm Modules
Pixel Pitch
P1.8
COB · 5H Hardness
Lịch Trình Sự Kiện
15 ngày
Production → Dispatch
Tổng chiều rộng
1,920mm
6 Modules × 320mm
Gửi bởi Nhóm Kỹ thuật DOIT VISION · · Xét bởi Kris LiangĐồng sáng lập · Tháng 8 năm 2026
CE · EMC · RoHS
15 kỹ sư · Đội ngũ 60 người tại Thâm Quyến
Hơn 55 quốc gia · NovaStar · Colorlight
PCB định hình + Linh hoạtMooncell + ResolumeLắp ráp Poka-Yoke
Tổng Quan Dự Án

Trong nháy mắt

Khách hàng
Bảo tàng Johnny Cash
Heritage Site · Tennessee
Địa điểm
Tennessee, Hoa Kỳ
On-site retrofit
hiển thị Công nghệ
Đèn LED COB P1.8
5H hardness · Epoxy sealed
Định dạng mô-đun
320×160mm Standard
Zero custom PCBs
Structure
Ultra-Slim Aluminum
Front-serviceable magnetic
Thử thách chính
No Structural Alteration
Fully finished heritage site
Gắn kết
Screw-Mount from Behind
Direct into wooden structure
Trợ giúp
Remote Pixel Mapping
12 risers as one canvas
01 — Ràng buộc về kích thước

The Strict Dimensional Constraints

The client provided the exact, unchangeable dimensions of the existing staircase:

  • Tổng số bước12 tầng
  • Chiều cao nâng5 7/8" (approx. 150mm)
  • Riser Width11 steps at 77.5" (1968.5mm) + 1 bottom step at 61" (1549.4mm)

The dilemma was clear. Standard LED cabinets are bulky — usually 500×500mm or 1000×250mm — which would completely ruin the depth of the stairs or protrude past the rounded lips of the wooden treads. Custom-sized PCB boards for a relatively small 12-step project would skyrocket R&D costs and blow the museum's budget.

02 — Kỹ thuật tối ưu hóa giá trị

Standard Modules, Custom Results

Instead of reinventing the wheel with expensive custom circuit boards, our engineering team looked at the client's dimensions and immediately identified a mathematical synergy with our standard mass-produced modules.

Nguồn cung ứng chiến lược

Chúng tôi đã chọn tiêu chuẩn của mình. Mô-đun LED COB P1.8 kích thước 320×160mm. The 160mm module height was a near-perfect fit for the 150mm exposed riser height, maximizing visual area without a single custom PCB. By placing 6 modules horizontally (320mm × 6), we achieved an exact width of 1920mm — perfectly centered within the 1968.5mm stair width with a clean, symmetrical margin on both sides.

This value engineering approach — using standard modules creatively instead of designing bespoke PCBs — saved the museum tens of thousands in custom fabrication costs while keeping the 15-day delivery timeline achievable.

03 — Structural Engineering

Ultra-Slim Profile Design & Wiring

Chúng tôi thiết kế theo yêu cầu riêng. Tủ có khung nhôm siêu mỏng measuring exactly 1920×160mm — rigid backbones that added minimal depth to the existing stairs.

  • Direct Screw-MountingBecause the stairs were wood, the local crew simply drove screws from behind the stairs directly into the aluminum frames — no messy brackets, no structural alteration.
  • 100% Front-ServiceableCOB modules attach via heavy-duty magnets. If a module ever needs replacement, a technician pulls it off from the front with a suction tool — no disassembly required.
  • Hidden InfrastructureAll power supplies and receiving cards were routed behind the hollow wooden stair structure, keeping the face of the stairs completely clean.
04 — Giao hàng trong 15 ngày

From Shenzhen to Tennessee in 15 Days

By heavily utilizing standard 320×160mm COB modules rather than drafting custom PCBs, we slashed the production timeline drastically. The complete 12-step system was manufactured, tested, and dispatched in just 15 ngày.

Upon arrival in Tennessee, the client's local crew handled the physical mounting smoothly thanks to the plug-and-play design. DOIT VISION's support team then stepped in via remote video link to map the 12 separate risers in software, digitally stacking them so that when the museum plays a video, content cascades seamlessly up and down the stairs as a single unified canvas.

Thông tin chi tiết về kỹ thuật quan trọng

True engineering mastery isn't always about building the most complex custom circuit board. Often, it's about having the intelligence to use standard, highly reliable components in creative ways to solve strict physical constraints, respect budgets, and crush delivery deadlines.

05 — Material Science

Why COB is Mandatory for Stair Displays

Specifying the right LED packaging technology is the difference between an installation lasting 5 years or 5 days. For any display installed at foot level, SMD is a liability.

Tính dễ bị tổn thương của SMD

Standard SMD (Surface-Mounted Device) screens consist of millions of tiny LED bulbs soldered onto a board. A single accidental kick from a shoe shears off multiple diodes, resulting in permanent dead pixels — unacceptable in a premium museum environment.

Bộ giáp COB

COB (Chip-on-Board) directly bonds the LED chips to the PCB, which is then completely coated and sealed in hardened epoxy resin. This creates a flat, smooth surface with Độ cứng 5H — highly resistant to scratches, kicks, and direct impacts. Because the surface is sealed, it's inherently water-resistant, meaning museum staff can safely wipe down and clean the stairs without damaging internal electronics.

By Numbers

Thông số dự án

12
Các bước
11 wide + 1 narrow bottom step
1.8
Khoảng cách điểm ảnh milimét
COB · 5H hardness impact-resistant
320 × 160
Kích thước mô-đun chuẩn
6 modules per riser = 1920mm width
150
Riser Height (mm)
Near-perfect fit with 160mm module
15
Giao hàng trong ngày
Production to dispatch
0
PCB tùy chỉnh
100% standard module value engineering
Chúng tôi đã giao hàng như thế nào

15-Day Retrofit Process

Giai đoạn 01

Dimensional Capture

Fixed dimensions verified: 150mm risers, 1968.5mm / 1549.4mm widths. Value engineering identified 320×160mm module synergy.

Giai đoạn 02

Aluminum Profile Fab

Custom 1920×160mm ultra-slim aluminum profiles fabricated with rear screw-mounting points and magnetic module interface.

Giai đoạn 03

Production & Dispatch

12 complete COB stair assemblies manufactured, tested, and dispatched in 15 days. All power and data pre-routed.

Giai đoạn 04

Remote Pixel Mapping

Local crew handled physical mounting. DOIT VISION engineers mapped 12 risers remotely — content cascades as one unified canvas.

Planning a retrofit installation?

Don't demolish your existing architecture just to fit standard LED cabinets. Our engineering team uses ultra-slim profiles and standard module synergy to save you thousands in custom fabrication costs.

Hãy nói chuyện với kỹ sư →
Câu hỏi của người mua

Câu Hỏi Thường Gặp

Can LED displays be installed on existing staircases without demolition?
Yes. For the Johnny Cash Museum, DOIT VISION engineered ultra-slim aluminum profiles that screw-mounted directly to the existing wooden stairs from behind — no structural alteration, no demolition. All power and control hardware was routed through the hollow stair structure, keeping the installation completely hidden from view.
Why is COB mandatory for stair and floor LED applications?
COB (Chip-on-Board) encapsulates LEDs in hardened epoxy resin with 5H hardness. This armor layer withstands kicks, scuffs, and shoe impacts that would instantly shear off exposed SMD diodes. The sealed epoxy surface is also water-resistant, allowing safe cleaning without damaging internal electronics. For any display installed at foot level, COB is the only viable technology.
What's the advantage of using standard modules over custom PCBs?
Using standard 320×160mm modules instead of custom PCBs dramatically cuts costs and lead times. At the Johnny Cash Museum, the 150mm riser height was a near-perfect fit for the 160mm module height — eliminating an estimated $15,000–25,000 in custom PCB R&D. It also compressed the timeline from 6–8 weeks to just 15 days, since standard modules are in continuous mass production.
How do you map content across multiple stair risers as one canvas?
Each riser is treated as an independent display tile. DOIT VISION engineers map all risers in the LED controller software as a single logical canvas — digitally stacking them so video content cascades seamlessly from the top step to the bottom as if it were one large screen. This mapping can be done remotely via video link, as was done for the Tennessee installation.
How fast can DOIT VISION deliver a stair LED retrofit?
The Johnny Cash Museum's 12-step system was manufactured, tested, and dispatched in 15 days using standard 320×160mm COB modules. Typical lead times range from 2–4 weeks depending on step count and whether custom cabinet dimensions are required. We pre-assemble and pre-wire all assemblies before shipping to minimize on-site installation time.
Is front maintenance possible on stair LED installations?
Yes. DOIT VISION designed the aluminum profiles with magnetic front-serviceable COB modules. If any module needs replacement, a technician simply uses a suction tool to pull it off from the front — no need to access the rear of the stairs. This is critical for installations where the back of the stair structure is inaccessible after installation.

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TẦM NHÌN DOIT
Tác giả
Kris Liang, Đồng sáng lập & Kỹ sư trưởng
Kinh nghiệm của tác giả
19 năm kinh nghiệm kỹ thuật màn hình LED
Loại nội dung
Bài viết
chủ đề chính
P1.8 COB LED Stairs Retrofit — Johnny Cash Museum, Tennessee
Công nghệ chính
COB LED, P1.8mm, 320×160mm Standard Module, Ultra-Slim Aluminum Profile, Front-Serviceable Magnetic Mounting
Phạm vi dự án
12 bước
Pixel Pitch
lõi P1.8
Vị trí của khách hàng
Tennessee, Hoa Kỳ
Lịch Trình Sự Kiện
15 days from production to dispatch
Ngày xuất bản
Ngày 2026 Tháng Tư
Ngày xem xét
Tháng Tám 2026
Chứng nhận:
CE, FCC, RoHS, CB, ISO 9001
Quốc gia phục vụ
55 +
Thành lập
2013, Thâm Quyến, Trung Quốc
Kỹ sư nội bộ
15
Kết nối ngay
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nhà chế tạo
TẦM NHÌN DOIT
Thành lập
2013, Thâm Quyến, Trung Quốc
Trụ sở chính
Thâm Quyến, Quảng Đông, Trung Quốc
Chứng nhận:
CE, FCC, RoHS, CB, ISO 9001
Trang web chinh thưc
https://www.doitvision.com/