Integrated Molding Technology of LED Board
Encapsulation and Film Coating cot
technical advantages






COT






Conventional
1. COT products have passed the thermal cycle testing
of -40℃~85℃ for more than 150 times without defects
such as dead leds, cracking and so on.
2. After COT treatment, the usual surface collisions will not cause any damage to leds






COT






Conventional






COT Conventional
3. After COT treatment, the deformation warping under extreme temperature conditions will be effectively reduced and the deformation stress is low.
(Deformation of LED board at low temperature of -40C)
4. After COT treatment, the occurrence of yellowing, blistering and delamination caused by extrem temperature will be effectively reduced .
Thermal Shock Testing (-40°C to 85°C)






COT






Conventional






COT






Conventional
5. After COT treatment, the occurrence of thickness difference, unevenness and color difference will be effectively reduced.
6. Put a conventional GOB product and a COT product together, and then use a screwdriver to scratch the product surface. It turns out that the GOB product is not scratch resistant with scratches and cracks occurred immediately, while the COT product has no damage.












COT
7. Red Dye Penetration Testing
Test method: 1:4 red ink. No abnormal penetrationat 100°C/4H.
8. ESD Testing
(Can reach above 8000V)Test method: 12KV Human body + mechanical mode












High Protection Grade
- Super strong anti-blue light and anti-ultraviolet abilities ensure no yellowing for 5 years.
- Super environmental adaptability, reaching -40 to 85℃ thermal shock resistance standard, which is unmatched by other solutions.
Super protection. Super waterproof and moisture-proof, and salt and alkali resistant.
Anti-deformation
- Anti-deformation. In the case of -40℃, deformation does not exceed 5%.
- Matte surface treatment. Highly consistent surface roughening treatment , non-reflective.












Even Thickness
- Uniform thickness. There is no obvious difference in thickness as the boards almost won’t deform.
- Maintainability. No color difference after maintenance and no yellowing .
Parameter | Value | ||||
---|---|---|---|---|---|
Pixel Pitch | 1.953 mm | 2.500 mm | 2.604 mm | 2.976 mm | 3.906 mm |
LED type | SMD1515 (BLACK) | SMD1515 / 2020 (BLACK) | SMD1515 / 2020 (BLACK) | SMD2020 (BLACK) | SMD2020 (BLACK) |
LED Configuration | 1 Red, 1 Green, 1 Blue | 1 Red, 1 Green, 1 Blue | 1 Red, 1 Green, 1 Blue | 1 Red, 1 Green, 1 Blue | 1 Red, 1 Green, 1 Blue |
Brightness | ≥ 800 | ≥ 800 | ≥ 800 | ≥ 800 | ≥ 800 |
Pixel Density | 262 144 pixels/m2 | 160 000 pixels/m2 | 147 456 pixels/m2 | 112 896 pixels/m2 | 65 536 pixels/m2 |
Module Resolution | 128×128 | 100×100 | 96×96 | 64×64 | 84×84 |
Module size | 250mm x 250mm | 250mm x 250mm | 250mm x 250mm | 250mm x 250mm | 250mm x 250mm |
Cabinet size | 250x500x47 / 250x1000x47 / 500x250x47 / 750x250x47 / 1000x250x47 / 500x500x47 / 500x750x47 (limit) 500x1000x47 | 250x500x47 / 250x1000x47 / 500x250x47 / 750x250x47 / 1000x250x47 / 500x500x47 / 500x750x47 (limit) 500x1000x47 | 250x500x47 / 250x1000x47 / 500x250x47 / 750x250x47 / 1000x250x47 / 500x500x47 / 500x750x47 (limit) 500x1000x47 | 250x500x47 / 250x1000x47 / 500x250x47 / 750x250x47 / 1000x250x47 / 500x500x47 / 500x750x47 (limit) 500x1000x47 | 250x500x47 / 250x1000x47 / 500x250x47 / 750x250x47 / 1000x250x47 / 500x500x47 / 500x750x47 (limit) 500x1000x47 |
Operating Temperature / Humidity | 0 to 40°C / 10% to 90% RH | 0 to 40°C / 10% to 90% RH | 0 to 40°C / 10% to 90% RH | 0 to 40°C / 10% to 90% RH | 0 to 40°C / 10% to 90% RH |
Storage T/ Humidity | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
Viewing Angle | 160/140 | 160/140 | 160/140 | 160/140 | 160/140 |