COB LED Display

PTCLED COB (Chip-on-Board) LED displays represent the next generation of ultra-high-definition visual technology. Unlike traditional SMD screens, our COB technology utilizes Flip-chip encapsulation, mounting LED chips directly onto the PCB for superior thermal management and a 165° ultra-wide viewing angle. Engineered for high-end indoor environments, these displays deliver a seamless, surface-light-source experience that is ideal for command centers, broadcast studios, and luxury corporate boardrooms.

COBFLEX
Innovative COB Flexible LED Display - P0.93 P1.25 P1.56
Brightness: 1200nits
IP Grade: IP54
Refresh Rate: 3840Hz~7680Hz
Gray Scale: 14bits～22bits
Operating Temperature: ﹣20℃～40℃
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COB PLUS
Indoor Fine Pitch COB LED Display - P0.93, P1.25
Brightness: 600~800nits
IP Grade: IP54
Refresh Rate: 3840Hz~7680Hz
Gray Scale: 14bits～22bits
Operating Temperature: ﹣20℃～40℃
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COB MAX
High brightness COB LED display - P0.7, P0.9, P1.25
Brightness: 1500nits~3000nits
IP Grade: IP54
Refresh Rate: 3840Hz~7680Hz
Gray Scale: 14bits～22bits
Operating Temperature: ﹣20℃～60℃
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COB PRO
Indoor Fine Pitch LED Display - P0.7, P0.9, P1.25, P1.56
Brightness: 600nits~1000nits
IP Grade: IP54
Refresh Rate: 3840Hz~7680Hz
Gray Scale: 14bits～22bits
Operating Temperature: ﹣20℃～60℃
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COB-Ultra
Innovative COB LED Display - P0.78, P0.93, P1.25, P1.56
Brightness: ≥600nits
IP Grade: IP54
Refresh Rate: 3840Hz~7680Hz
Gray Scale: 14bits～22bits
Operating Temperature: ﹣20℃～40℃
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The Technical Advantage: Why Choose COB Technology?

Exceptional Durability: The resin-encapsulated surface provides IP54-grade protection, making the screen shockproof, anti-static, and moisture-proof.
Ultra-High Contrast: Achieve deep blacks and vibrant colors with a 10,000:1 contrast ratio, significantly higher than traditional SMD technology.
Energy Efficiency: Integrated with Common Cathode architecture, our COB panels reduce power consumption by up to 30% while maintaining low surface temperatures.
Visual Precision: Supports 7680Hz high refresh rates and 22-bit grayscale to ensure flicker-free, cinema-grade imaging.

Specialized Applications for 4K/8K Environments

As a professional COB LED screen manufacturer, we provide high-definition solutions for mission-critical scenarios.

Command & Control Centers

Utilizing P0.7 and P0.9 ultra-fine pixel pitches for high-density data visualization and 24/7 operational reliability.

Broadcast & TV Studios

Seamless 2K/4K/8K video walls with zero moiré effect, ensuring perfect clarity for professional on-camera backdrops.

Corporate Executive Boardrooms

High-resolution COB LED walls offering a "soft-light" surface viewing experience, significantly reducing eye strain during long meetings.

Luxury Retail & Private Cinema

Delivering immersive HDR content with deep blacks and vivid colors that redefine premium indoor advertising and home theaters.

Technical Comparison: COB vs. Traditional SMD

Feature	PTCLED COB Series	Standard SMD Display
Encapsulation	Flip-chip COB (Direct Bonding)	SMD (Bracket & Wire)
Pixel Pitch Range	P0.5mm — P1.5mm	P1.2mm — P10mm
Protection Level	Anti-collision, IP54 Surface	Fragile LED Beads
Viewing Angle	165° Horizontal / Vertical	140° — 160°
Contrast Ratio	10,000:1	3,000:1 — 5,000:1

CUSTOMER CASE

Our displays easily support 2K/4K/8K resolutions, making them ideal for close-range applications such as broadcast studios, meeting rooms, TV Studio, Exhibition Center, Shopping Mall, Airport; Cinema.

P1.2 COB Flexible LED Display in Al Jubayl

The P1.2 COB LED screen (2.4m×1.35m) installed in Jubail features IP54 protection, seamless connection and large viewing angle.

Indoor P1.2 LED screen in Saudi Arabia

The Premteco COB Pro series indoor P1.2 LED screen—deployed for the 2025 Saudi Arabia project with a 4.8m*2.025m size，front access, and easy maintenance.

Premteco Indoor LED P1.5 in Dubai Mirdiff City Center mal

It was Premteco indoor P1.5 LED displays (SP3 series, 2 sets × 2.56m × 1.44m) with die-casting aluminum, ultra slim design and seamless connection, installed in Dubai Mirdiff City Center mall in 2024.

August 25, 2021

What Is a LED Display and How Does It Work

LED is short for Light Emitting Diode. An LED emits light as a result of electric luminescence. It is also known as 'cold light' as, unlike with old-fashioned incandescent bulbs, the light is not produced by heating a metal filament. The diode, on the other hand, emits light when flowing through two specially coated silicon semiconductors. It is one of the most energy-efficient and power-saving ways to produce light. An LED consists of solid materials without movable parts and is often moulded into transparent plastic. This ensures high durability. When an LED is on, it emits almost zero heat. This reduces the problem of cooling the electronic parts.

May 21, 2025

COB vs SMD LED Displays: A Comprehensive Neutral Comparison for Professionals

In the realm of LED display technology, two prominent solutions dominate professional applications: Chip-on-Board (COB) and Surface-Mount Device (SMD). Each offers unique structural and optical characteristics, and both remain highly relevant in commercial, institutional, and public display installations.

April 19, 2024

What Is COB LED Display

COB (Chip on Board) LED technology involves mounting multiple bare LED chips directly onto a PCB without individual packaging. This enables a much higher LED density compared to other methods like Surface Mounted Device (SMD) or Dual In-line Package (DIP)

FREQUENTLY ASKED QUESTIONS

What pixel pitches are available for COB LED series?

PTCLED offers a versatile range of ultra-fine pixel pitches tailored for high-end indoor scenarios, including P0.78, P1.25, P1.5, and P1.9. These options allow for extreme detail and are specifically engineered for applications requiring high-density data visualization and seamless imaging.

What are the core advantages of COB LED Display over SMD?

Compared to traditional SMD, COB (Chip-on-Board) technology mounts LED chips directly onto the PCB using flip-chip bonding. This provides a 10,000:1 contrast ratio, superior heat dissipation, and a much tougher surface. The resin-encapsulated finish makes the screen shockproof, anti-static, and waterproof (IP54), ensuring far greater durability than fragile SMD beads.

Is COB LED Display suitable for near-screen viewing?

Absolutely. COB technology creates a "surface light source" rather than the "point light source" of SMD. This results in a much softer, more uniform light emission that significantly reduces eye strain, making it the ideal solution for executive boardrooms and command centers where viewers are often close to the screen.

Does COB LED Display support front maintenance?

Yes. Our COB series features a full front-access design, allowing modules, power supplies, and cards to be replaced without dismantling the rear structure. This enables slim, wall-mounted installations that save significant space in boardrooms and control centers.

What is the refresh rate of COB LED Display?

To ensure flicker-free performance under professional broadcast cameras, our COB displays feature an ultra-high refresh rate of up to 7680Hz. Combined with 22-bit grayscale processing, this ensures smooth motion and perfect color gradients, meeting the rigorous standards of TV studios and XR stages.

Does COB LED Display support 4K/8K UHD resolution?

Yes, the fine pixel pitch of the COB series makes it perfect for 4K and 8K UHD configurations. The system also integrates with advanced control software supporting WiFi, 4G, and Ethernet remote management to handle ultra-high-definition content with ease.

Is the screen surface easy to clean?

Yes. Since the chips are protected by a smooth resin layer, the surface is waterproof and anti-static. You can safely wipe the screen with a clean cloth without damaging the LEDs.

What scenarios are COB LED Displays mainly used for?

Due to their superior resolution and reliability, COB displays are primarily used in mission-critical and premium environments. This includes Command & Control Centers, Broadcast TV Studios, High-end Corporate Meeting Rooms, Exhibition Centers, and Luxury Private Cinemas where seamless, close-range viewing is essential.

COB LED Display

The Technical Advantage: Why Choose COB Technology?