Shenzhen Longrun LED Optelectronic CO.,LTD
| Application | outdoor advertising |
| Color | Full color |
| Panel Size | 250*250mm |
| Pixel Pitch | 3.91mm |
| Pixels | 3.91 mm |
| Screen Dimension | Customized |
| Product name | Outdoor p3.91 led display |
| Pixel Density | 65,536 dots/m2 |
| LED Lights | SMD 1919 |
| Cabinet size | 500mm*500mm |
| Cabinet resolution | 128*128 |
| Brightness | 800-3000cd/m2 |
| Refresh rate | 3840Hz |
| Selling Units | Single item |
| Single package size | 67X83X73 cm |
| Single gross weight | 90.0 kg |
| Package Type | 1. Flightcase 2. Plywood 3. Honeycomb carton |
| Place of Origin | Guangdong, China |
| Model Number | LR-M-P3.91 |
| Brand Name | LONGRUN LED |
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Product Specification
| Application | outdoor advertising | Color | Full color |
| Panel Size | 250*250mm | Pixel Pitch | 3.91mm |
| Pixels | 3.91 mm | Screen Dimension | Customized |
| Product name | Outdoor p3.91 led display | Pixel Density | 65,536 dots/m2 |
| LED Lights | SMD 1919 | Cabinet size | 500mm*500mm |
| Cabinet resolution | 128*128 | Brightness | 800-3000cd/m2 |
| Refresh rate | 3840Hz | Selling Units | Single item |
| Single package size | 67X83X73 cm | Single gross weight | 90.0 kg |
| Package Type | 1. Flightcase 2. Plywood 3. Honeycomb carton | Place of Origin | Guangdong, China |
| Model Number | LR-M-P3.91 | Brand Name | LONGRUN LED |
| High Light | led video display board ，outdoor led video wall | ||
Brightness Adjustable Led Public Display, Outdoor Led Video Wall Screen P3.91
√ High precision die-casting aluminum material cabinet, special design on cabinet bottom ensures flatness of the whole screen even the platform is not flat.
√ Front and back maintenance design by the module magnet assembly.
√ Standing, moving, wall mounting, or hanging installation methods is available.
√ High-performance PCB board substrate with strict technology process ensure perfect flatness performance, showing the most real and brilliant colors.
| Module specification | |
| LED configuration | 3 in 1 |
| Pixel pitch | P3.91 |
| LED lamp | SMD1919 |
| Module resolution | 64*64 |
| Module size | 250*250mm |
| Cabinet specification | |
| Module array | 2*2pcs |
| Cabinet resolution | 128*128 |
| Cabinet size | 500*500mm |
| Display area | 0.25sqm |
| Flatness | <0.2 |
| Optical specification | |
| Brightness | 800-3000cd/sqm |
| Scan mode | 1/16s |
| Refresh rate | 3840Hz |
| Horizontal viewing angle | 140degree |
| Vertical viewing angle | 120degree |
| Electrical specification | |
| Cabinet power consumption | 160w |
| Average power consumption | 50w |
| Power supply | AV 110V/220V (50/60Hz) |
| Operation specification | |
| Lifespan | 100,000 hours |
| Operation temperature | -10~+60 |
| Storage temperature | -10~+50 |
| Operation humidity | 10%~80% |
| Storage humidity | 40%~60% |
1. Adjustable curve angle, inner 5/10/15 degree, outer 5/10 degree.
2. Easy installation, can make special shape screens.
P3.91 Rental Curve Screen Flexible LED Display Screen
| Q: What is the brightness, viewing angle and wavelength of the LED? |
| A: Luminous Intensity is equal to the amount of luminous flux emitted into a very small solid angle at a defined angular orientation from the light source. The measurement for luminous intensity is the candela. The symbol is Iv. Viewing Angle is the total cone angle in degrees encompassing the central, high luminous intensity portion of the LED beam from the on-axis peak to the off-axis point where the LED intensity is 50% of the on-axis intensity. This off-axis point is known as theta one-half ( 1/2). Two times 1/2 is the LEDs' full viewing angle; however, light is visible beyond the1/2 point. Wavelength is the distance between two points of the corresponding phase and is equal to waveform velocity divided by frequency. It defines what color human eyes could recognize |
| Q: What is dominant wavelength? Please specify the ranges of wavelength in red, green and blue color respectively. |
| A: Dominant wavelength is defined as the best range of wavelength showing the most natural color recognized by human eyes. Researches indicate that fixed colors with a wavelength of 620-630nm (red), 520-530nm (green), and 460-470nm (blue), in fact, mixed in a particular proportion, can get pure white. That is, in the display field, people use luminous materials with the above wavelength to make "compounded" white more natural. In order to get a good balance white led display, we specify the led colors with wavelength within 4nm for each color |
| Q: Which chip vendors are you buying from? |
| A: It depends on the Customer's requirement. We can purchase from Japan, Korea, Europe, USA. We are using chips mainly from Taiwan |
| Q: What is the chip size you're using for outdoor display? How about indoor display? |
| A: For outdoor display, we're using a 12mil chip for red, 14mil for both green and blue. Regarding indoor display, 9mil for red, 12mil for green and blue are currently adopted |
| Q: How much will the brightness of LED drop down after 1000hrs? |
| A: Based on the result of the aging test, the brightness decay of green LED is around 5%-8%, while blue is around 10%-14% and red is around 5%-8% |
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
2013
Total Annual:
3000000-10000000
Employee Number:
101~200
Ecer Certification：
Active Member
Shenzhen Longrun Optoelectronics Technology Co., Ltd., shortly named as Longrun Optoelectronics, was established in 2013. It is a high-tech LED display enterprise integrating R&D, production and sales. Headquartered in Longrun Optoelectronics Technology Park which locates in Shajing of Shenzhen,... Shenzhen Longrun Optoelectronics Technology Co., Ltd., shortly named as Longrun Optoelectronics, was established in 2013. It is a high-tech LED display enterprise integrating R&D, production and sales. Headquartered in Longrun Optoelectronics Technology Park which locates in Shajing of Shenzhen,...
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