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CHOCO COB TECHNOLOGY

True Chip-on-Board
LED Innovation

CHOCO's proprietary COB process bonds LED chips directly onto the substrate — eliminating intermediate packaging, reducing thermal resistance by 40%, and delivering display performance previously impossible with conventional SMD technology.

IP54 Protection · 8,000:1 Contrast · 100,000hrs Lifespan
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CHOCO COB LED Display Technology
100,000
HRS RATED LIFESPAN
200+
PATENTS
18+
Years in LED Manufacturing
50+
Core Patents
150+
Countries Exported To
100,000hrs
Rated Display Lifespan
COB LED Technology Chip-on-Board
IP54 PROTECTION Nano-Encapsulated Surface
COB PACKAGING EXPLAINED

What is COB LED Technology?

COB (Chip-on-Board) is an advanced LED packaging method where bare LED chips are bonded directly onto the PCB substrate and encapsulated as a unified surface — instead of the conventional SMD approach of mounting pre-packaged individual LEDs.

This direct-bonding process eliminates the intermediate housing structure, reducing the thermal path from chip to heatsink by up to 40%. The result: lower operating temperatures, longer lifespan, and display uniformity that SMD packaging physically cannot achieve.

  • Direct die bonding at micron-level precision
  • Proprietary nano-resin encapsulation for IP54 protection
  • Surface light source eliminates visible pixel gaps
COB LED 8000:1 Contrast Ratio Display
01
ADVANTAGE 01

8,000:1 Ultra-High Contrast Ratio

COB's seamless surface eliminates inter-pixel reflective gaps — the primary cause of washed-out blacks in SMD displays. With a true black level of 0.001 nit and a native contrast ratio of 8,000:1, CHOCO COB panels render deep shadows and brilliant highlights simultaneously, even under ambient office lighting.

8,000:1
Contrast Ratio
0.001nit
Black Level
160°
Viewing Angle
COB LED Eye-Care Low Blue Light TUV Certified
02
ADVANTAGE 02

Eye-Care Comfort for Long-Duration Viewing

COB's surface-emission architecture eliminates the flicker and moiré that plague SMD point-source arrays. TÜV Rheinland-certified low blue light output — 30% reduction versus conventional LED — makes CHOCO COB the responsible choice for control rooms, corporate boardrooms, and university lecture halls where displays are viewed for hours at a time.

3840Hz
Refresh Rate
30% Less
Blue Light
Zero
Moiré Effect
COB LED IP54 Protection Nano-Encapsulation
03
ADVANTAGE 03

IP54 All-Round Protection

CHOCO's nano-encapsulation process seals the entire module surface into a single continuous protective layer — no exposed solder joints, no pinhole failure modes. The result is a certified IP54 display surface that withstands dust infiltration, moisture ingress, and accidental physical contact that would permanently damage conventional SMD modules.

IP54
Protection Rating
9H
Surface Hardness
50,000×
Impact Tests
COB LED Thermal Management Low Power Efficiency
04
ADVANTAGE 04

Low Power & Precision Thermal Management

By bonding chips directly to the copper substrate, CHOCO COB reduces the thermal resistance between the LED junction and heatsink by 40% compared to SMD packaging. Lower operating temperatures translate directly into reduced power consumption, extended component lifespan, and lower total cost of ownership over a 10-year installation cycle.

40%
Less Heat Resistance
30%
Power Savings
100,000hrs
Rated Lifespan
COB LED Nano-Encapsulation Anti-Collision 9H Hardness
05
ADVANTAGE 05

Nano-Encapsulation Anti-Collision Surface

CHOCO's proprietary nano-resin matrix cures into an integrated 9H-hardness surface — equivalent to tempered glass — across the entire display face. Lateral and frontal impacts that would shatter or dislodge SMD pixels are absorbed without damage. This durability makes CHOCO COB the preferred choice for rental touring rigs, high-traffic retail, and any deployment where display panels are regularly handled.

9H
Surface Hardness
IP54
Fully Sealed
5×
vs SMD Durability
TECHNOLOGY COMPARISON

COB vs SMD: The Complete Breakdown

14 performance dimensions. See why leading AV integrators worldwide choose COB.

SPECIFICATION COB LED (CHOCO) ★ SMD LED
Pixel Pitch RangeP0.9 – P2.0 ✓ WINP1.2 – P10+
Display SurfaceSeamless Surface Light ✓ WINPoint Light Sources
Contrast Ratio8,000:1+ ✓ WIN2,000:1 – 3,000:1
Black Level0.001 nit ✓ WIN0.05+ nit
Viewing Angle160° ✓ WIN120° – 140°
IP ProtectionIP54 ✓ WINIP20 – IP31
Surface Hardness9H Nano-Coated ✓ WINExposed LEDs
Heat DissipationDirect Substrate Bonding ✓ WINVia Encapsulant
Power Efficiency30% Lower ✓ WINStandard
Rated Lifespan100,000+ hrs ✓ WIN60,000 – 80,000 hrs
Moiré EffectNone ✓ WINPossible at Close Range
Eye ComfortTÜV Certified Low Blue Light ✓ WINStandard
InstallationSeamless Tiling ✓ WINRequires Gap Calibration
Long-Term TCOLower Total Cost ✓ WINHigher Maintenance Cost
PRECISION MANUFACTURING

From Chip to Display:
CHOCO's 4-Step COB Process

1
🔬

Chip Sorting & Binning

Every LED die tested to ΔuV<1 color deviation before bonding — guaranteeing screen-wide luminance uniformity.

2
⚡

Direct Die Bonding

Chips bonded to copper substrate via gold-wire at micron-level precision. Thermal resistance reduced 40% vs. SMD.

3
🛡

Nano-Encapsulation

Proprietary resin matrix sealed across entire module surface. Achieves IP54 and 9H hardness simultaneously.

4
✅

Calibration & 72-hr Burn-in

13-point QC protocol and 72-hour continuous burn-in before shipping. Zero-defect target on every batch.

INNOVATION BACKBONE

18 Years of COB R&D —
Built Into Every Module

Since 2006, CHOCO has operated dedicated COB research programs across three R&D centers in Shenzhen. Our team of 120+ engineers holds over 200 registered patents spanning die bonding methodology, encapsulation chemistry, and calibration algorithms.

This proprietary knowledge base cannot be replicated by companies that source generic COB modules — it is embedded in every panel we manufacture.

VIEW CERTIFICATIONS →
200+
Registered Patents & IP
120+
Dedicated R&D Engineers
3
Shenzhen-Based R&D Labs
18yrs
COB Manufacturing Experience
GLOBAL COMPLIANCE

Certified for Every Major Market

CHOCO displays meet the regulatory requirements of North America, Europe, and Asia-Pacific.

CE Marking
European Union
FCC Part 15
United States
RoHS Directive
Global
UL Listed
North America
ISO 9001:2015
Quality System
ETL Listed
North America
WHERE COB EXCELS

Trusted Across High-Demand Environments

COB LED Control Room Display
CONTROL ROOM

Command & Monitoring Centers

24/7 operations demand flicker-free, eye-comfortable displays with deep black levels for data visualization.

→
COB LED Broadcast Studio Virtual Production
BROADCAST

Studio & Virtual Production

Ultra-fine pixel pitch and high refresh rates eliminate camera moiré — critical for on-camera performance.

→
COB LED Conference Room Boardroom
CORPORATE

Conference & Board Rooms

Seamless, cable-free 4K installations for executive presentation environments with zero visible bezels.

→
COB LED Retail Showroom Display
RETAIL

Premium Showroom Displays

IP54 durability for high-traffic zones. Wide viewing angle and vivid color cover every aisle.

→
COB LED Education University Campus
EDUCATION

University & Campus

Low blue light certification protects students and faculty during extended daily sessions.

→
COB LED Exhibition Trade Show Events
EXHIBITION

Trade Shows & Events

Rental-compatible COB for fast setup and touring-grade anti-collision durability.

→
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