COB and GOB LED Display: Indoor Guide 2026
COB and GOB LED Displays for Indoor Installations
COB and GOB LED displays, built with Chip-on-Board and Glue-on-Board technology, are the evolution of professional indoor LED displays. They overcome the limits of traditional SMD in applications where visual uniformity, mechanical protection and operational reliability are non-negotiable.
Unlike SMD, which uses discrete LEDs mounted one by one, COB and GOB integrate the LED chips directly on the substrate under a continuous protective surface. This construction removes the dark gaps between pixels, increases impact resistance and significantly extends operating life in demanding environments.
COB and GOB at a glance
COB and GOB in one line: choose COB for close viewing and stable premium installations, and GOB for a wider range of pixel pitches, public areas and rental.
- COB and GOB modules: 320×160 mm for permanent installations, 250×250 mm (GOB only) for rental.
- COB and GOB pixel pitch: P1.25-P1.86 for COB, P1.25-P2.5 for GOB in the 320×160 mm format, P1.95-P2.9 for GOB rental.
- COB and GOB protection: IP54 front protection on both; the GOB epoxy coating resists scratches better.
- COB and GOB contrast: 10,000:1 for COB, 8,000:1 for GOB.
- COB and GOB viewing angle: 160° horizontal and vertical on both.
- COB and GOB refresh rate: 3840 Hz, flicker-free on camera.
- COB and GOB cost: COB costs about 25-30% more than the equivalent GOB.
- COB and GOB warranty: 2 years standard, with an optional extension to 5 years.
Advanced COB and GOB LED display technology for indoor installations
COB and GOB: two module formats for different applications
Dison COB and GOB LED display technology is built on two module formats, each optimised for specific operating conditions:
320×160 mm module for permanent fixed installations: luxury retail, corporate meeting rooms, 24/7 control rooms, automotive showrooms. Available in COB (pixel pitch P1.25-P1.86) and GOB (pixel pitch P1.25-P2.5). The rectangular format makes standard LED display configurations easy, with a seamless gap below 0.5 mm.
250×250 mm module for rental and temporary events: conferences, theatres, conventions, indoor broadcast. Available in GOB only (pixel pitch P1.95-P2.9) with a fast-lock system for quick assembly and disassembly. The square format allows flexible 16:9, 4:3 or custom configurations to suit each event.
COB vs GOB: specialisation vs versatility
COB (Chip-on-Board) excels in premium fixed installations that need maximum visual uniformity at close range. With a fine pixel pitch of P1.25-P1.86 and the 320×160 mm format, COB is the best choice for luxury retail under 2 metres, automotive showrooms and control rooms where the perception of a continuous, seamless surface is critical.
GOB (Glue-on-Board) offers complete versatility, covering both fixed installations (320×160 mm, P1.25-P2.5) and rental events (250×250 mm, P1.95-P2.9). The epoxy coating of GOB adds better scratch protection than COB, which makes it ideal for high-traffic environments and for rental use with frequent transport. COB costs about 25-30% more than the equivalent GOB.
COB and GOB common technical specifications
COB and GOB both provide IP54 front protection (dust and splash water), an LED lifetime of 100,000 hours (about 11 years of 24/7 operation), contrast of 10,000:1 for COB and 8,000:1 for GOB, and a 160° horizontal and vertical viewing angle. A 3840 Hz refresh rate eliminates flicker on camera, while 13-14 bit gray scale gives ultra-smooth colour gradations for HDR content.
A dead pixel rate of 1% and an MTBF above 10,000 hours show industrial-grade reliability. CE and RoHS certifications ensure compliance in Europe. 2-year standard warranty, with an optional extension to 5 years.
Who COB and GOB technologies are for
Professional system integrators who design permanent or premium rental LED installations, where image quality and reliability justify an investment above standard SMD. Rental companies running high-end corporate events with demanding technical requirements. B2B buyers for luxury retail, automotive showrooms, operational control rooms, corporate headquarters, museums and indoor art installations.
What you will find in this COB and GOB guide
Complete technical specifications for the COB and GOB modules in 320×160 mm and 250×250 mm formats, with comparison tables of pixel pitch, resolution and power consumption. A COB vs GOB decision guide based on objective parameters, to make the choice easier in your own application. Real LED display configurations with sizing examples and power calculations. Compatibility with NovaStar video processors.
Technical specifications of the COB and GOB modules
COB and GOB modules: two formats for different applications
Dison COB and GOB LED display technology uses two module formats optimised for different operating contexts. The 320×160 mm module serves permanent indoor fixed installations where maximum visual quality and standard LED display configurations are needed. The 250×250 mm GOB module covers rental and temporary events, where mechanical robustness and configuration flexibility are the top priorities.
This split optimises cost and performance: the rectangular 320×160 mm format makes pre-assembled LED displays easy, with a seamless gap below 0.5 mm that suits permanent retail, corporate and control room installations. The square 250×250 mm format with a fast-lock system allows quick assembly and disassembly for events, conferences and temporary installations with frequent cycles.
COB and GOB 320×160 mm module: permanent fixed installations
The 320×160 mm module is the standard format for permanent indoor LED installations. With an area of 0.0512 m² and a light weight of 0.88-0.90 kg, it supports modular LED display configurations from a single slim totem up to multi-metre video walls. The 2:1 ratio (twice as wide as it is high) suits the horizontal configurations typical of meeting rooms, retail and control rooms.
COB and GOB pixel pitch 320×160 mm: COB technology
| Pixel pitch | Module resolution | Minimum distance | Brightness | Ideal application | Average consumption |
|---|---|---|---|---|---|
| P1.25 | 256×128 px | 1.2 m | 800-1,000 nits | Premium showrooms, luxury retail under 1.5 m | 95 W/m² |
| P1.53 | 209×105 px | 1.5 m | 800-1,000 nits | Luxury retail, executive meeting rooms | 90 W/m² |
| P1.86 | 172×86 px | 1.8 m | 1,000 nits | Standard corporate, 24/7 control rooms | 75 W/m² |
Features of COB 320×160 mm:
- Flip-Chip COB technology with LED chips integrated directly on the PCB
- Continuous seamless surface with no discrete LEDs that can be told apart
- 10,000:1 contrast thanks to the uniform black surface between pixels
- Excellent heat dissipation for continuous 24/7 operation
- Ideal for distances under 2 metres, where visual uniformity is a critical requirement
COB and GOB pixel pitch 320×160 mm: GOB technology
| Pixel pitch | Module resolution | Minimum distance | Brightness | Ideal application | Average consumption |
|---|---|---|---|---|---|
| P1.25 | 256×128 px | 1.2 m | 800-1,000 nits | Premium showrooms, luxury retail under 1.5 m | 95 W/m² |
| P1.53 | 209×105 px | 1.5 m | 800-1,000 nits | Luxury retail, executive meeting rooms | 90 W/m² |
| P1.86 | 172×86 px | 1.8 m | 1,000 nits | Standard corporate, control rooms | 75 W/m² |
| P2.0 | 160×80 px | 2.0 m | 1,000 nits | Corporate lobbies, medium installations | 70 W/m² |
| P2.5 | 128×64 px | 2.5 m | 1,200 nits | Large format, large indoor spaces | 60 W/m² |
Features of GOB 320×160 mm:
- Glue-on-Board technology with a protective epoxy coating
- Better scratch protection than COB in high-traffic environments
- Extended pixel pitch range P1.25-P2.5 covers distances of 1.2-3 metres
- Extra mechanical protection at a lower cost: COB costs about 25-30% more than the equivalent GOB
- Versatile, from luxury retail to large-format corporate
Overlap P1.25-P1.86: for these three pixel pitches you can choose between COB and GOB. Choose COB if your priority is maximum visual uniformity and optimal heat dissipation. Choose GOB if the environment carries a risk of scratches or impact, or if you prefer superior mechanical protection for a slightly higher investment.
GOB only, P2.0-P2.5: these medium pixel pitches are available in GOB only. They cover distances of 2-3 metres, typical of corporate lobbies, large-format retail and big spaces where a pitch below P2 would be overkill.
COB and GOB 250×250 mm module: rental and events (GOB only)
The square 250×250 mm module, with exclusive GOB technology, serves rental and temporary events. The 1:1 format allows flexible configurations for any aspect ratio (16:9, 4:3, custom) required by events, theatres, conventions and indoor broadcast. The fast-lock system guarantees the quick assembly and disassembly that rental companies need for weekly cycles.
COB and GOB pixel pitch 250×250 mm: GOB rental
| Pixel pitch | Module resolution | Minimum distance | Brightness | Ideal application | Module weight |
|---|---|---|---|---|---|
| P1.95 | 128×128 px | 2.0 m | 1,000-1,200 nits | Premium events, indoor broadcast | ~1.3 kg |
| P2.6 | 96×96 px | 2.6 m | 1,200 nits | Mid-sized events, conferences, theatres | ~1.3 kg |
| P2.9 | 86×86 px | 3.0 m | 1,200-1,500 nits | Large events, conventions, expos | ~1.4 kg |
Features of GOB 250×250 mm rental:
- Module area of 0.0625 m² (a perfect square)
- Fast-lock system with magnets: tool-free assembly in under 2 minutes per module
- GOB protection is essential for frequent transport and intensive handling
- Weight of 1.3-1.4 kg balances robustness and easy manual handling
- Dedicated flight cases protect the modules during event transport
- Front service access for quick on-site maintenance during the event
COB and GOB for rental: why GOB only for the 250×250 mm format
Choosing GOB as the only option for the rental format rests on measurable operating requirements. Rental companies run 20-50 assembly and disassembly cycles per installation each year, a mechanical stress that the GOB epoxy coating handles very well, extending operating life by 30-40% compared with traditional SMD.
The P1.95-P2.9 pixel pitch range covers event distances of 2-6 metres, where the audience watches from the stalls, a conference room or an expo area. Pixel pitches below P2 would be overkill at these distances, with a price premium that the visible benefit does not justify.
The fast-lock system and the square format let a rental crew build custom configurations in a few hours: a 6×3 metre setup (24×12 modules, 288 modules in total) takes 2 technicians 3-4 hours for complete assembly, including cabling and calibration. Dismantling after the event takes under 2 hours for the same team.
COB and GOB formats: 320×160 mm vs 250×250 mm
| Parameter | 320×160 mm | 250×250 mm |
|---|---|---|
| Available technologies | COB + GOB | GOB only |
| Primary application | Permanent fixed | Rental events |
| Pixel pitch range | P1.25-P2.5 (5 GOB options, 3 COB) | P1.95-P2.9 (3 options) |
| Geometry | Rectangular 2:1 | Square 1:1 |
| Module area | 0.0512 m² | 0.0625 m² (22% larger) |
| Module weight | 0.88-0.90 kg | 1.3-1.4 kg (45% heavier) |
| Mounting system | Magnets + permanent frame | Rental fast-lock |
| IP protection | IP54 front | IP54 front |
| Viewing angle | H160° / V160° | H160° / V160° |
| Configuration flexibility | Pre-defined standard LED displays | Free custom configurations |
| Assembly frequency | Once (permanent) | 20-50 cycles per year |
| Target distance | 1.2-3 metres | 2-6 metres |
| Seamless gap | <0.5 mm | <0.8 mm (rental tolerance) |
Choosing the format:
- 320×160 mm for permanent retail, corporate and control room installations with standard LED display configurations and maximum seamless quality.
- 250×250 mm for rental events with frequent cycles, variable custom configurations and a priority on handling robustness.
Common COB and GOB technical specifications for both formats
COB and GOB protection and reliability
| Parameter | COB value | GOB value | Notes |
|---|---|---|---|
| Front IP protection | IP54 | IP54 | Dust and splash water resistant |
| LED lifetime | 100,000 h | 100,000 h | About 11 years of 24/7 operation |
| MTBF | >10,000 h | >10,000 h | Mean time between failures |
| Dead pixel rate | 1% | 1% | Share of defective pixels |
| Operating temperature | -10°C to +40°C | -10°C to +40°C | Indoor, climate controlled |
| Operating humidity | 10-90% RH | 10-90% RH | Non-condensing |
COB and GOB optical performance
| Parameter | COB value | GOB value | Difference |
|---|---|---|---|
| Contrast | 10,000:1 | 8,000:1 | COB is better thanks to its black surface |
| Colour gamut | DCI-P3 >90% | DCI-P3 >90% | Identical, cinema grade |
| Viewing angle H/V | 160° / 160° | 160° / 160° | Identical side uniformity |
| Refresh rate | 3840 Hz | 3840-7680 Hz | Flicker-free video |
| Gray scale | 13-14 bit | 13-14 bit | 16,384 colour shades |
| Colour uniformity | >97% | >96% | COB slightly better |
COB and GOB power consumption comparison
| Format | Pixel pitch | Technology | Max consumption (W/m²) | Average consumption (W/m²) | Standby |
|---|---|---|---|---|---|
| 320×160 mm | P1.25 | COB / GOB | 300 W | 95 W | <5 W |
| 320×160 mm | P1.53 | COB / GOB | 280 W | 90 W | <5 W |
| 320×160 mm | P1.86 | COB / GOB | 260 W | 75 W | <5 W |
| 320×160 mm | P2.0 | GOB only | 240 W | 70 W | <5 W |
| 320×160 mm | P2.5 | GOB only | 210 W | 60 W | <5 W |
| 250×250 mm | P1.95 | GOB only | 280 W | 85 W | <5 W |
| 250×250 mm | P2.6 | GOB only | 230 W | 70 W | <5 W |
| 250×250 mm | P2.9 | GOB only | 210 W | 65 W | <5 W |
Consumption notes:
- Max consumption: full-brightness white, dynamic content with a high APL
- Average consumption: typical mixed presentation and video content (APL 30-40%)
- Standby: module powered, no signal present
COB and GOB certifications and compliance
Certifications: CE (Europe) and RoHS (restriction of hazardous substances). Safety standard: EMC Directive 2014/30/EU (electromagnetic compatibility). Warranty: 2 years standard on modules and LED components, with an optional extension to 5 years.
COB vs GOB: which one to choose
The choice between COB and GOB LED displays depends on objective, measurable parameters: target viewing distance, operating environment, how often maintenance is needed and the available budget. This section gives concrete decision criteria based on real applications and technical trade-offs verified over 18 months of operation on more than 200 Dison installations.
Choose COB when
Maximum visual uniformity is the priority
COB excels when the end user views the screen from less than 1.5-2 metres. The integrated Flip-Chip surface removes any perception of discrete LEDs, giving a seamless image even at 50 centimetres. Luxury retail where customers walk up to the window, automotive showrooms with products 1 metre from the screen and executive meeting rooms with close viewing all need this uniformity.
The 10,000:1 contrast of COB against 8,000:1 for GOB means deeper blacks and better shadow detail. In operational 24/7 control rooms, where operators watch critical data for hours, this difference reduces visual fatigue by 15-20% as measured in comparative user tests.
A stable, climate-controlled environment
Permanent indoor installations in HVAC-controlled environments (temperature 18-24°C, humidity 40-60%) let COB deliver its best performance. The excellent heat dissipation of COB keeps LED temperature 5-8°C lower than GOB under sustained load, extending effective lifetime and reducing colour shift over time.
Corporate headquarters, museums and retail flagship stores offer these stable environments, where the thermal advantage of COB translates into superior reliability over 5-7 years of operation.
A premium budget is available
The COB price premium is justified when the end client values a premium visual experience. Luxury retail projects, tier-1 automotive showrooms and executive boardrooms, where the display is a technological statement as much as a working tool, absorb this investment. For the overlapping pixel pitches P1.25-P1.86, COB costs about 25-30% more than the equivalent GOB, a difference that buys documented visual uniformity and superior thermal performance.
A fine pixel pitch is required (P1.25-P1.86)
For applications that need a pixel pitch of P1.25-P1.86 where uniformity is the priority, COB is the best technical choice. These pixel pitches serve distances of 1.2-2 metres typical of premium applications, where the seamless perception of COB gives a measurable competitive advantage.
Choose GOB when
You need a versatile pixel pitch range
GOB covers the full range P1.25-P2.5 (320×160 mm format) and P1.95-P2.9 (250×250 mm format), offering 8 pixel pitch options against 3 for COB. Projects where the viewing distance varies between 1.2 and 3 metres, or where the budget calls for cost and performance optimisation, benefit from this flexibility.
P2.0 and P2.5, available only in GOB, serve medium to large installations (corporate lobbies, large retail surfaces) where a pitch below P2 would be overkill. A large-format P2.5 GOB video wall costs significantly less than the equivalent P1.86, an important difference when a viewing distance of 2.5-3 metres makes P2.5 perfectly adequate.
Superior mechanical protection is required
The GOB epoxy coating resists scratches and impact 40-50% better than the COB surface. High-traffic environments (interactive museums, retail where customers handle products, automotive showrooms with frequent set-ups) benefit from this extra robustness.
Comparative tests show that the GOB surface survives a 1.2 metre drop test without damage against 0.8 metres for COB. Where accidental impact is a risk, GOB is the safer choice, with an estimated 20-30% reduction in maintenance costs over a 5-year cycle.
Rental applications with frequent cycles
The 250×250 mm GOB rental format handles 20-50 assembly and disassembly cycles per year while keeping its performance. Rental companies serving corporate events, theatres and conventions need this mechanical reliability. The fast-lock system lets a crew of 2 assemble 288 modules (an 18 m² display) in 3-4 hours, against 6-8 hours for traditional formats.
The investment in GOB rental modules is paid back over multiple cycles, with reduced downtime and contained maintenance compared with less robust technologies.
An optimised budget is the priority
For the overlapping pixel pitches P1.25-P1.86, GOB offers 92-95% of the visual quality of COB for a lower investment. Standard corporate projects, non-luxury retail and education installations, where budget is a constraint but professional quality is required, find the best compromise in GOB.
The difference in investment between GOB and COB can be put into a better video processor, an integrated audio system or other AV components, optimising the overall value of the installation.
COB and GOB decision matrix for the overlapping pixel pitches (P1.25-P1.86)
For the three pixel pitches available in both technologies, the choice depends on specific priorities:
COB and GOB quick reference decision table
| Primary requirement | Viewing distance | Environment | Budget | Best choice |
|---|---|---|---|---|
| Maximum uniformity | <1.5 m | Climate-controlled | Premium | COB |
| 24/7 thermal reliability | 1.5-2 m | Stable indoor | Premium | COB |
| Premium statement quality | 1.2-2 m | Protected | High | COB |
| Mechanical protection | <2 m | High traffic | Medium-high | GOB |
| Pixel pitch versatility | 1.5-2 m | Standard indoor | Optimised | GOB |
| Installation with public access | 1.2-2 m | Public access | Medium | GOB |
| Budget constraint | 1.5-2 m | Protected | Contained | GOB |
COB and GOB real application scenarios
Luxury retail boutique (viewing distance 1-1.5 m): COB P1.53. Seamless uniformity is essential, customers look from close up, a premium budget is available and the environment is climate-controlled. The premium price is justified by a documented superior visual experience.
Standard corporate meeting room (viewing distance 2-2.5 m): GOB P1.86 or P2.0. The distance suits both pixel pitches, the budget is optimised and there is versatility for future reconfiguration. GOB P2.0 offers a tangible saving over P1.86 with equivalent visual quality at that distance.
Mission-critical 24/7 control room (viewing distance 1.5-2 m): COB P1.86. Continuous operation calls for the optimal heat dissipation of COB, reducing visual fatigue is a priority, and the budget is justified by operational criticality. The longer COB lifetime pays back the higher initial investment.
High-traffic automotive showroom (viewing distance 1-2 m): GOB P1.53. Frequent vehicle set-up and handling call for superior mechanical protection, visual quality is still premium and the GOB coating reduces maintenance. The best compromise between robustness and quality.
Corporate rental events (viewing distance 2-4 m): GOB 250×250 mm P2.6. The fast-lock rental format is essential, the event distance is covered perfectly and GOB robustness handles frequent cycles. It is the only technology available in the rental format.
When NOT to choose COB or GOB
Do not choose COB if
The budget is limited and the distance is over 2 metres: beyond 2 metres the uniformity advantage of COB becomes imperceptible. The premium investment is not justified when GOB P2.0-P2.5 offers equivalent perceived quality with a tangible saving.
The environment carries a high risk of impact: public installations with possible direct contact (interactive museums, hands-on retail, busy showrooms) expose the COB surface to scratches. GOB protection is the more rational choice in these contexts.
You need a pixel pitch above P2: COB is not available beyond P1.86. For viewing distances above 2 metres that call for P2.0, P2.5 or P2.9, GOB is the only option (or traditional SMD for very tight budgets).
It is a rental event application: COB is not available in the 250×250 mm rental format. Temporary events need a fast-lock system and handling robustness that only GOB 250×250 mm offers in the Dison portfolio.
Do not choose GOB if
Absolute priority is uniformity under 1 metre: for luxury applications where the user looks from under 1 metre and budget is no constraint, the superior contrast and uniformity of COB justify the premium. GOB offers 95% of COB quality, but that remaining 5% can be noticeable in ultra-premium contexts.
You need 24/7 operation under sustained load: mission-critical control rooms with displays running 20-24 hours a day benefit from the superior heat dissipation of COB. An LED temperature 5-8°C lower means long-term reliability and less colour shift.
Professional maintenance is guaranteed: if specialist technical support is available and the environment is protected, the mechanical protection advantage of GOB matters less. In these optimised contexts COB delivers its best performance.
When traditional SMD is the better alternative
A very tight budget with a distance over 3 metres: for large-format installations where the viewing distance exceeds 3-4 metres, traditional SMD offers adequate visual quality for a lower investment than COB or GOB. SMD P2.5-P3 LED displays serve lobbies, large retail surfaces and events with an optimised budget.
Single-LED repairability is required: SMD allows individual discrete LEDs to be replaced with standard soldering equipment. COB and GOB need the whole module replaced for a dead pixel. If autonomous maintenance is a priority, SMD keeps the operating advantage.
See the Dison SMD LED display range for budget-conscious alternatives: 320×160 mm and 640×480 mm formats are available in pixel pitches P1.86-P3.07 with SMD technology, at a lower investment than the equivalent GOB.
COB and GOB LED display configurations: from module to complete unit
The 320×160 mm LED modules are assembled into pre-configured LED displays for permanent fixed installations, while the 250×250 mm modules allow free custom configurations for rental applications. This section gives real configuration examples with sizing, power calculations and operating technical specifications.
Standard COB and GOB LED displays in the 320×160 mm format
The rectangular 320×160 mm format makes modular LED display configurations easy, with proportions optimised for professional indoor applications. A seamless gap below 0.5 mm ensures visual continuity between adjacent modules.
Table: 320×160 mm LED display configurations
| Configuration | Total dimensions | Modules | Layout | Resolution @ P1.86 | Resolution @ P2.5 | Total weight | Display area |
|---|---|---|---|---|---|---|---|
| Single slim totem | 320×160 mm | 1 | 1×1 | 172×86 px | 128×64 px | 0.9 kg | 0.05 m² |
| Vertical totem | 320×480 mm | 3 | 1×3 | 172×258 px | 128×192 px | 2.7 kg | 0.15 m² |
| Half standard unit | 640×320 mm | 4 | 2×2 | 344×172 px | 256×128 px | 3.6 kg | 0.20 m² |
| Standard unit | 640×480 mm | 6 | 2×3 | 344×258 px | 256×192 px | 5.4 kg | 0.31 m² |
| Large unit | 960×480 mm | 9 | 3×3 | 516×258 px | 384×192 px | 8.1 kg | 0.46 m² |
| Medium video wall | 960×960 mm | 18 | 3×6 | 516×516 px | 384×384 px | 16.2 kg | 0.92 m² |
| Large video wall | 1280×960 mm | 24 | 4×6 | 688×516 px | 512×384 px | 21.6 kg | 1.23 m² |
Configuration notes:
- Layout is expressed as columns×rows (for example 2×3 = 2 columns, 3 rows)
- Resolutions are calculated for pixel pitches P1.86 and P2.5 (P2.5 is GOB only)
- Weight includes modules, mounting frame and connectors
- A seamless gap below 0.5 mm between adjacent modules is guaranteed
Fixed application examples with 320×160 mm
Luxury retail: premium shop window
Application: luxury boutique shop window, viewing distance 1-1.5 metres. Configuration: 3.2×1.6 m video wall. Technology: COB P1.53 (seamless uniformity is the priority). Composition: 10 columns × 5 rows = 50 modules in total. Resolution: 2090×525 pixels. Installation weight: 45 kg.
Power consumption: maximum 560 W (full-brightness white content); average 180 W (typical mixed retail content, APL 30%); standby under 10 W.
Setup: wall mounting frame, front service access, NovaStar VX600 Pro processor. Benefits of this configuration: the uniformity of COB P1.53 is noticeable to customers at 1 metre, a seamless gap below 0.5 mm creates the effect of a continuous surface, and the low average consumption of 180 W is about the same as 2 industrial LED bulbs.
Corporate meeting room: interactive wall
Application: corporate meeting room, viewing distance 2-2.5 metres. Configuration: 4.8×2.4 m wall video wall. Technology: GOB P2.0 (optimised investment, adequate distance). Composition: 15 columns × 8 rows = 120 modules in total. Resolution: 2400×640 pixels (panoramic aspect ratio of about 3.75:1). Installation weight: 108 kg.
Power consumption: maximum 840 W; average 245 W (corporate presentations, APL 25-35%); standby under 15 W.
Setup: dedicated wall structure, hidden cabling, optional touch control system, NovaStar VX1000 Pro processor. Benefits of this configuration: P2.0 pixel pitch is ideal for a distance of 2-2.5 m, the panoramic aspect ratio suits business content (timelines, dashboards) and GOB protection withstands frequent set-up handling.
24/7 control room: operational video wall
Application: 24/7 operational control room, viewing distance 1.5-2 metres. Configuration: 6.4×3.2 m multi-screen video wall. Technology: COB P1.86 (thermal reliability for continuous operation). Composition: 20 columns × 10 rows = 200 modules in total. Resolution: 3440×860 pixels. Installation weight: 180 kg.
Power consumption: maximum 1,560 W; average 480 W (monitoring dashboards, APL 20-30%); standby under 25 W.
Setup: professional video wall structure with dedicated ventilation, power redundancy, NovaStar VX2000 Pro processor with backup, multiviewer control system. Benefits of this configuration: the heat dissipation of COB is essential for 24/7 use, a lower LED temperature extends lifetime, the high resolution allows multiview of 8-12 sources at once, and an average consumption of 480 W is contained for continuous operation.
Rental configurations for COB and GOB 250×250 mm modules
The square 250×250 mm format allows flexible assembly for the custom aspect ratios that events, theatres and conventions require. The fast-lock system makes variable, setup-dependent configurations easy.
Table: typical 250×250 mm rental configurations
| Configuration | Total dimensions | Modules | Aspect ratio | Resolution @ P2.6 | Module weight | Setup time |
|---|---|---|---|---|---|---|
| Small event 16:9 | 4×2.25 m | 16×9 = 144 | 16:9 | 1536×864 px | 187 kg | 2 h (2 technicians) |
| Medium event 16:9 | 6×3.375 m | 24×13.5 = 324 | 16:9 | 2304×1296 px | 421 kg | 4 h (2 technicians) |
| Large event 16:9 | 8×4.5 m | 32×18 = 576 | 16:9 | 3072×1728 px | 749 kg | 6 h (3 technicians) |
| Theatre 4:3 | 6×4.5 m | 24×18 = 432 | 4:3 | 2304×1728 px | 562 kg | 5 h (2 technicians) |
| Custom convention | 10×3 m | 40×12 = 480 | Custom 3.33:1 | 3840×1152 px | 624 kg | 6 h (3 technicians) |
Rental configuration notes:
- Setup time includes module assembly, cabling and initial testing (no fine calibration)
- Weight is for the modules only, without truss or ground support structure
- Resolution is calculated for P2.6 (the average pixel pitch for corporate events)
- The fast-lock system allows one module to be assembled every 1-1.5 minutes
Rental application examples with 250×250 mm
Corporate events: standard 16:9 setup
Application: corporate conference, audience distance 3-5 metres. Configuration: 6×3.375 m 16:9 display. Technology: GOB 250×250 mm P2.6. Composition: 24 columns × 13.5 rows = 324 modules (13.5 means a mix of whole modules). Resolution: 2304×1296 pixels (Full HD+ equivalent). Total weight: about 550 kg (modules + ground support structure).
Power consumption: maximum 1,420 W; average 430 W (corporate presentations).
Setup: ground support structure, 2 technicians, 4 hours of assembly. Dismantling: 2 hours after the event. Benefits of this configuration: native 16:9 aspect ratio for corporate video, a resolution adequate for readable text at 4-5 m, a weight that a crew of 2 can handle, and a fast-lock system that cuts setup time by 40% compared with traditional systems.
Theatres: classic 4:3 setup
Application: theatre or convention hall, audience distance 4-8 metres. Configuration: 6×4.5 m 4:3 display. Technology: GOB 250×250 mm P2.9. Composition: 24 columns × 18 rows = 432 modules. Resolution: 2064×1548 pixels. Total weight: about 680 kg (modules + truss rigging).
Power consumption: maximum 1,350 W; average 405 W.
Setup: suspended truss rigging, 2 technicians plus a rigger, 5-6 hours of total assembly. Dismantling: 3 hours. Benefits of this configuration: P2.9 pixel pitch is ideal for theatre distances of 6-8 m, the traditional 4:3 format is compatible with legacy content, suspended rigging frees up stage space, and GOB protection withstands audio and bass vibration.
Calculating the power consumption of COB and GOB configurations
Power consumption formula
Theoretical maximum consumption: display area (m²) × max consumption for the pixel pitch (W/m²) = maximum watts.
Real operating consumption: display area (m²) × average consumption for the pixel pitch (W/m²) = average watts.
Practical example, 10 m² video wall in P1.86:
- Max consumption: 10 m² × 260 W/m² = 2,600 W theoretical maximum
- Average consumption: 10 m² × 75 W/m² = 750 W real operation (mixed content, APL 30%)
- Monthly consumption: 750 W × 8 h/day × 22 days = 132 kWh/month
Factors that affect real consumption:
- APL (Average Picture Level): darker content consumes less
- Brightness setting: 80% brightness reduces consumption by about 15-20%
- Content type: dynamic video uses 20% more than static images
- Ambient temperature: above 28°C, cooling consumption increases
Available COB and GOB LED display products
Fixed 320×160 mm LED displays
Pre-assembled LED display configurations available in the Dison catalogue:
- 640×480 mm LED display: standard fixed indoor, 2×3 module configuration, COB and GOB P1.25-P2.5. See the 640×480 mm indoor LED display.
- 960×960 mm LED display: large-format video wall, 3×6 module configuration, COB and GOB P1.25-P2.5.
- 320×480 mm slim LED display: vertical totem, 1×3 module configuration, COB and GOB P1.25-P2.5. See the 320×480 mm indoor LED display.
- Other sizes: custom configuration on request.
See also the COB LED Display Real Pixel Series and the full indoor LED display range.
GOB 250×250 mm rental series
GOB 250×250 mm rental module: P1.95, P2.6, P2.9, fast-lock system. See the rental LED wall range.
COB and GOB compatibility and support
Video processors compatible with COB and GOB
All Dison COB and GOB LED display modules integrate natively with NovaStar VX series video processors, giving professional signal handling, advanced colour calibration and centralised control. The choice of processor depends on the total resolution of the installation and the features required.
NovaStar processors for COB and GOB LED displays
| Processor | Max pixel capacity | Video inputs | RJ45 outputs | Max COB/GOB configuration | Key features |
|---|---|---|---|---|---|
| VX400 Pro | 2.6M pixels | 1× HDMI 2.0 4K@60Hz | 4× Gigabit | ~80 modules 320×160 P1.86; ~60 modules 250×250 P2.6 | Colour calibration, brightness control, HDR10 |
| VX600 Pro | 4M pixels | 2× HDMI 2.0 4K@60Hz | 6× Gigabit | ~120 modules 320×160 P1.86; ~95 modules 250×250 P2.6 | Dual input, seamless switching, pixel-level calibration |
| VX1000 Pro | 6.5M pixels | 2× HDMI 2.0 + 2× DP 1.2 | 10× Gigabit | ~200 modules 320×160 P1.86; ~150 modules 250×250 P2.6 | 4×4 multiviewer, genlock, backup input |
| VX2000 Pro | 10M pixels | 4× HDMI 2.0 4K@60Hz | 20× Gigabit | ~300+ modules 320×160 P1.86; ~240+ modules 250×250 P2.6 | Dual processor redundancy, 8K support, advanced colour management |
Capacities are calculated for:
- 320×160 mm modules at P1.86: 172×86 pixels per module = 14,792 pixels/module
- 250×250 mm modules at P2.6: 96×96 pixels per module = 9,216 pixels/module
Calculation example: a 6.4×3.2 m video wall with 200 modules of 320×160 mm at P1.86 = 200 × 14,792 = 2,958,400 pixels in total. It needs at least a VX600 Pro (4M capacity), and a VX1000 Pro is recommended for operating margin.
COB and GOB system compatibility and cabling
Integration technical requirements
Power:
- Input voltage: 100-240 V AC, 50/60 Hz, universal
- Dedicated power supplies: 1 PSU for every 6-8 modules is recommended for redundancy
- Protection: dedicated circuit breaker for the installation, ground connection mandatory
- Total system standby consumption: under 0.5 W per module in sleep mode
Data transmission:
- Protocol: standard Gigabit Ethernet over CAT6 cable (recommended) or CAT5e (minimum)
- Topology: daisy-chain supported up to 8-10 modules per chain
- Maximum distance: 100 metres per CAT6 segment without a signal booster
- Latency: under 1 ms end to end with a NovaStar processor
Control:
- Software: NovaLCT (NovaStar LED Control Tool), free for Windows and macOS
- API protocol: TCP/IP for integration with custom control systems (Crestron, Extron, AMX)
- Mobile control: NovaLCT Mobile app for Android and iOS (basic monitoring and control)
Typical fixed installation setup
Components needed for a standard installation
For a 10 m² video wall (example: 6.4×3.2 m, 200 modules of 320×160 mm at P1.86):
- LED modules: 200 COB or GOB P1.86 320×160 mm modules
- Video processor: 1 NovaStar VX1000 Pro (6.5M pixel capacity)
- Power: 25-30 dedicated PSUs (1 for every 6-8 modules, for redundancy) and 2 dedicated 16 A circuit breakers
- Cabling: 200-250 m of CAT6 cable for data transmission, dedicated power cables for each PSU, and professional cable organisers and management
- Mounting: wall frame or freestanding structure depending on the installation, with certified brackets for the total weight (200 modules × 0.9 kg = 180 kg)
- Accessories: spare modules (2-3% of the quantity, for quick replacement), a calibration sensor for colour uniformity, and a maintenance tool kit
Typical rental event setup
Components needed for a standard rental setup
For an 18 m² event (example: 6×3.375 m, 324 modules of 250×250 mm at P2.6):
- Rental LED modules: 324 fast-lock GOB P2.6 250×250 mm modules
- Video processor: 1 NovaStar VX1000 Pro
- Structure: ground support system or truss rigging (depending on the venue), and flight cases for module transport (20-30 modules per case)
- Rental cabling: pre-assembled cable looms to cut setup time, and dedicated event power distribution
- Crew: 2-3 LED specialist technicians, 4-6 hours for full setup (assembly + cabling + calibration) and 2-3 hours of teardown after the event
- Backup: 5% spare modules (16-20 modules out of 324), and spare PSUs and critical cables
Dison technical support for COB and GOB
Available support services
Pre-sales advice:
- Analysis of the application and installation environment requirements
- Sizing of the optimal configuration (number of modules, pixel pitch, processor)
- Power consumption calculation and check of the available power supply
- Estimate of installation time and crew needed
- Advice on COB vs GOB for your specific application
Installation support:
- Complete technical documentation (datasheet, installation guide, wiring diagram)
- Remote technical support during installation (email, phone, video)
- NovaStar processor configuration and initial calibration
After-sales:
- Continuous technical support through a ticketing system
- Remote troubleshooting and diagnostics
- Spare parts availability (module, PSU and cable replacement)
- Firmware updates for NovaStar processors
- Optional 5-year extended warranty
Request a custom COB and GOB configuration
Every LED project has specific requirements. The Dison technical team supports sizing and the optimal configuration for your application.
What to provide for technical advice
Basic information:
- Application (retail, corporate, control room, rental events)
- Available space dimensions or target display dimensions
- Typical viewing distance of end users
- Environment (protected indoor, high traffic, climate-controlled, etc.)
- Expected operation (8 hours a day, 24/7, occasional use)
Advanced information (if available):
- Indicative budget range
- Project timeline
- Typical content (video, static images, data dashboards)
- Integration with existing systems (AV control, building management)
- Maintenance requirements (remote technical support)
What you will receive:
- Optimal module configuration (format, pixel pitch, COB and GOB technology)
- Sizing of the right NovaStar processor
- Cabling and power diagram
- Complete component list
- Estimate of operating power consumption
- Estimated installation timeline
- Technical support included
Technical support contacts
For technical support and a quote, use the contact page. We reply by email within 24 business hours.
Request advice form
Do you have an LED project to carry out? Our technical team is available for free advice on the optimal COB and GOB configuration for your application.
What you get: analysis of requirements and a technology recommendation; sizing of the complete configuration; power consumption calculation and technical specifications; help choosing the video processor; a reply within 24 business hours.
COB and GOB LED displays: frequently asked questions
COB (Chip-on-Board) mounts the LED chips directly on the substrate under a continuous surface, which gives maximum visual uniformity at close range. GOB (Glue-on-Board) adds a protective epoxy coating on top, which improves scratch and impact resistance. Both are indoor technologies and both offer IP54 front protection.
COB is the better choice when people view the screen from under 1.5-2 metres, for example in luxury retail, automotive showrooms and executive meeting rooms. Its black surface gives a contrast of 10,000:1 against 8,000:1 for GOB, with slightly better colour uniformity. GOB remains a good option from about 2 metres.
In the 320×160 mm format, COB is available in P1.25, P1.53 and P1.86, and GOB in P1.25, P1.53, P1.86, P2.0 and P2.5. In the 250×250 mm rental format, GOB is available in P1.95, P2.6 and P2.9. P2.0 and P2.5 are GOB only.
Choose the 320×160 mm module for permanent installations such as retail, corporate spaces and control rooms, where you want a standard configuration and a seamless gap below 0.5 mm. Choose the 250×250 mm GOB module for rental and events, where you need a fast-lock system, free custom configurations and frequent assembly cycles.
Yes. The epoxy coating of GOB protects the surface better against scratches and impact, which is why it is the choice for high-traffic areas, public access and rental use with frequent transport. COB offers better heat dissipation and contrast, so it suits stable, climate-controlled indoor environments.
Rental is covered by the 250×250 mm GOB module. It has a fast-lock system with magnets and a front service access, and it is designed for repeated assembly and disassembly. The 320×160 mm module is designed for permanent installations.
As a guide, P1.25 works from 1.2 m, P1.53 from 1.5 m, P1.86 from 1.8 m, P2.0 from 2.0 m and P2.5 from 2.5 m. In the rental format, P1.95 works from 2.0 m, P2.6 from 2.6 m and P2.9 from 3.0 m.
Yes. Dison COB and GOB displays work with NovaStar video processors, including the Pro versions (VX400 Pro, VX600 Pro, VX1000 Pro and VX2000 Pro). Choose the processor according to the total resolution of the display. Colour calibration works in the same way on both technologies.
Dison COB and GOB displays are CE and RoHS certified. The standard warranty is 2 years on modules and LED components, with an optional extension to 5 years.
Start from four things: viewing distance, environment, how often the display is handled or moved, and budget. Choose COB for close viewing and stable premium installations, and GOB for a wider pixel pitch range, public areas and rental. If you are unsure, contact the Dison team through the contact page.