Under normal temperature conditions;
The white balance temperature is ≤45℃.
COB
RGB three different color light-emitting chips are packaged into lamp beads, and then the lamp beads are welded to the PCB board to form a unit module, and finally spliced into a whole LED screen.
Keywords:
Category:
Indoor COB LED Video Wall
CONTENT
Definition
COB(Chip on Board)
That is, on-board chip packaging, the light-emitting chip is integrated and packaged on the substrate.
SMD(Surface Mounted Devices)
Use SMT+reflow soldering technology to solder LED devices on PCB boards to make display modules.
Display Performance
High Contrast
Long-term Consistent Color
Chips with the same specifications have fixed BIN numbers, no binning for the same specifications, and unified calibration before leaving the factory
Wide Gamut，DCI-P3 98%
HDR High Dynamic Image Quality
8K Resolution | 22bit+0.001nit Fine Control | 419,000 Fine Grayscale Calibration | Restoring the Real
Matte Surface, Anti-glare
Structural Advantages
Light Panel Protection Level IP54
Panel Hardness 4H
Electrical Advantages
Low Consumption Cold Screen
Low temperature rise | Low power consumption
Single box power consumption ≤75w;
Power consumption per square meter ≤370w.
Process Route Innovation
Improved Stability
Technical Advantages
Flip-chip COB | Front-mounted Chip COB | |
Chip Cross Section |  |  |
COB Package Cross Section |  |  |
Chip Electrode Gerber Diagram |  |  |
Features | ● Good heat dissipation, low surface temperature, low power consumption ● Sealed and moisture-proof, no electrode migration and leakage ● Wide electrode GAP value, high reliability | ● Easy to have false solder joints/broken/wires/leakage/metal migration ● High thermal resistance ● Easy to knock and drop lamps, frequent maintenance |
COB VS SMD
| Technical Point | SMD | COB |
Stability | LED Dead Light Rate | 200PPM | 5PPM |
Anti-collision | Fragile | ≥4H | |
Moisture Resistance | No | IP54 Front | |
Low Power Consumption(white balance) | ≥55℃,≥500w/sq.m | ≤45℃,≤370w/sq.m | |
Display Effect | Contrast Ratio | 3,000:1 | 20,000:1 |
Color Gamut | NTSC≤100% | DCl-P398%,NTSC≥117% | |
Graininess | Yes | No | |
Viewing Angle | ±140° | ±170° | |
Moiré Phenomenon | Obvious | Significantly Reduced |
COB LED Module Level Correction
Comparison of Various Technical Routes
● Electrical Connection: COB is the best, SMD is the second;
● Comparison: COB performs best, SMD is the second;
● Thermal Cycle and Thermal Shock: COB performs best;
● Mounting Process: COB uses Pick & Place process, SMD uses SMT process;
● Requirements for LED Chip Size: COB can package chips larger than125um, SMD can only package chips larger than 145um;
● Lamp Bead Size: Most mainstreamSMD sizes are above 1010;
● Mixed Lamp Beads: COB is easy to mix lamp beads and effectively eliminate the Mura effect;
● Flatness: COB has the highest fatness, followed by SMD;
Flip Chip COB Era
Client Visit
Factory Equipment
Packaging and Shipping
Customer Praise
Frequently Asked Questions
We offer free consultation to solve your problem
What about warranty and after-sales service?
We offer a five-year warranty, lifetime technical support, and remote guidance.
How do you ensure quality?
Seven quality control steps guarantee your screen is in good condition:
1). Suppliers are established companies with long-term partnerships.
2). Materials undergo inspection by skilled workers and machinery.
3). Each module undergoes debugging.
4). All modules undergo 48-hour burn-in testing before assembly.
5). After assembly by engineers and machinery, each cabinet undergoes functional testing.
6). Full screen undergoes 72-hour burn-in testing before shipment.
7). All details undergo final inspection before packaging.
Do your displays support custom designs and specifications?
Yes, we offer custom designs and production tailored to client requirements, including dimensions, mounting methods, and special environmental needs.
Do your displays meet international certification standards?
Yes, our displays comply with various international certification standards, such as CE certification, RoHS certification, FCC certification, and others.
What types of displays do you offer?
We provide a wide range of LED displays in various sizes and technologies, including SMD, COB, and GOB. Our solutions are suitable for all scenarios and support deep customization, covering indoor fixed installations, outdoor fixed installations, rental/mobile displays, and rooftop screens.
Why should I purchase from you rather than other suppliers?
We uphold the principle of long-term partnerships, leveraging premium manufacturing resources to ensure both technological excellence and product quality. Our diversified supply chain guarantees cost control and stable delivery. Combined with end-to-end services, dedicated customization solutions, and lifetime technical support, we deliver worry-free procurement, reliable collaboration, and greater confidence in your profitability.
Need Assistance?
We're here to help.
Contact Phone
+86 17324819693
Contact Email
sales01@pingcaidisplay.com
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