COB vs SMD LED Display Nepal – Which Should You Buy? (2025)
Choosing between COB (Chip-on-Board) and SMD (Surface Mount Device) LED technology is one of the most important decisions when buying an LED display in Nepal. This guide explains the real differences, who each technology suits, and what Evolve Tech recommends for different use cases.
What Is SMD LED Technology?
SMD LED is the standard technology used in the vast majority of LED displays sold in Nepal today. In SMD displays, individual red, green, and blue LED chips are surface-mounted onto the PCB separately. The three chips are housed in a small plastic package visible as individual dots on the screen surface.
SMD has been the dominant technology since around 2015, replacing older DIP (Dual In-line Package) technology. It offers good colour performance, wide viewing angles, and is available at every price point from budget P6 outdoor to high-end P1.8 indoor.
What Is COB LED Technology?
COB LED technology packages all three LED chips (red, green, blue) directly onto the PCB substrate without individual plastic housings. The chips are then encapsulated together in a single epoxy resin layer, creating a continuous, smooth display surface with no individual chip housings visible.
COB was commercialised for LED displays around 2019–2020 and is now available from premium manufacturers including Unilumin — the brand Evolve Tech supplies in Nepal. COB commands a significant price premium over SMD due to its manufacturing complexity.
COB vs SMD: Head-to-Head Comparison
The table below compares the two technologies across the specifications most relevant to buyers in Nepal:
| Specification | SMD LED | COB LED |
|---|---|---|
| Pixel pitch range | P1.2 – P10+ | P0.9 – P2.5 |
| Minimum pixel pitch in Nepal | P1.2 (rare) | P1.5 (available via Evolve Tech) |
| Surface protection | Exposed chip packages (can be damaged) | Full epoxy encapsulation (highly durable) |
| Anti-dust performance | Moderate (dust can settle between chips) | Excellent (smooth surface repels dust) |
| Anti-moisture performance | Good with IP-rated models | Superior (encapsulation seals all chips) |
| Dead pixel risk | Higher (individual chip failures) | Lower (encapsulation protects chips) |
| Contrast ratio | Good | Excellent (black epoxy reduces reflections) |
| Viewing angle | 140°–160° | 160°–180° |
| Refresh rate | 1,920 Hz – 3,840 Hz | 3,840 Hz – 7,680 Hz |
| Price (NPR per sqm) | NPR 80,000 – 250,000 | NPR 250,000 – 600,000+ |
| Touch integration | Difficult | Compatible (flat surface) |
| Repair complexity | Individual chip replacement possible | Module-level replacement required |
When to Choose SMD LED in Nepal
SMD LED is the right choice for the majority of applications in Nepal. Choose SMD when your budget is under NPR 250,000 per square metre, when the display is for general advertising or information display rather than precision work, when you need a large outdoor display (P4, P5, P6 outdoor SMD remains excellent), or when the installation environment is not a high-dust or high-humidity controlled room.
SMD remains the most cost-effective technology for outdoor billboards, retail shop displays, government notice boards, hotel lobby screens (medium pixel pitch), and most indoor commercial applications.
When to Choose COB LED in Nepal
COB LED is worth the premium price for specific high-requirement applications. Choose COB when you need pixel pitch below P2 for very fine image quality, when the installation is a control room or command centre where displays run 24/7 and image clarity is critical, when the environment has significant dust exposure (workshop, industrial, medical), when the display will be used for video production and the high refresh rate is required to eliminate flicker on camera, or when you want Nepal’s highest-quality display installation and budget allows.
Evolve Tech completed Nepal’s first-ever COB LED display installation in 2024 — a P1.5 COB control room video wall in Kathmandu. This milestone demonstrates that COB technology is now available in Nepal and fully supported with local installation and service.
COB vs SMD: Price Guide in Nepal (2025)
The following prices are approximate indicative costs for indoor LED display projects in Nepal including supply, installation, and commissioning. Prices vary by screen size, brand, and mounting complexity.
| Type | Pixel Pitch | Approx Price (NPR per sqm) | Best For |
|---|---|---|---|
| SMD Indoor Standard | P2.5 – P3 | 80,000 – 130,000 | Retail, office, hotel lobby |
| SMD Indoor High-Res | P1.8 – P2 | 130,000 – 200,000 | Broadcast, showroom, conference |
| COB Indoor Standard | P2 – P2.5 | 250,000 – 350,000 | Premium corporate, education |
| COB Indoor High-Res | P1.5 | 350,000 – 500,000 | Control room, studio, medical |
| COB Indoor Ultra-HD | P0.9 – P1.2 | 500,000 – 800,000+ | Broadcast studio, premium art |
Evolve Tech’s Recommendation
For most businesses and government clients in Nepal, high-quality SMD LED from Unilumin provides excellent value and proven performance. Evolve Tech has completed 100+ SMD LED installations with outstanding results.
If your application is a control room, broadcast studio, high-end hotel lobby, or medical facility where only the best will do — COB is worth the investment and Evolve Tech is the only supplier currently offering COB LED with professional installation and warranty service in Nepal.
Contact Evolve Tech for a free consultation. We will assess your specific requirements and recommend the right technology and pixel pitch for your budget and application.
Frequently Asked Questions: COB vs SMD LED Display Nepal
Is COB LED available to buy in Nepal?
Yes — Evolve Tech is currently the only supplier offering COB LED displays with professional installation and warranty in Nepal. We supply Unilumin COB LED panels at pixel pitches from P1.5, with delivery and installation in Kathmandu and across Nepal. Contact us for a quotation.
What is the price difference between COB and SMD LED in Nepal?
COB LED typically costs 2–3 times more than equivalent SMD LED per square metre. A P2.5 SMD display might cost NPR 100,000–130,000 per sqm, while a P2 COB equivalent costs NPR 250,000–300,000 per sqm. The price premium reflects COB’s more complex manufacturing, superior durability, and better optical performance.
Which LED display technology is better for outdoor use in Nepal?
For outdoor use in Nepal, SMD LED with IP65 weatherproofing remains the standard and most cost-effective choice. COB is primarily advantageous for indoor fine-pitch applications. Outdoor displays at P4–P6 pixel pitch are almost exclusively SMD, and there is no meaningful practical advantage to COB for typical Nepalese outdoor installations.
Does COB LED last longer than SMD LED?
COB LED generally has a longer practical lifespan due to its epoxy encapsulation protecting the LED chips from physical damage, dust, and moisture. Both COB and SMD LED panels from Unilumin are rated at 100,000+ hours of LED lifespan. In practice, COB’s protection means fewer dead pixels and less maintenance over the display’s lifetime.
Can Evolve Tech repair COB LED displays in Nepal?
Yes — Evolve Tech maintains spare COB LED modules for the panels we supply. COB repairs are done at the module level (replacing an entire module rather than individual chips). We carry inventory in Kathmandu and can typically complete repairs within 3–5 business days for installed displays under warranty.