Modern P4 Rental Led Display Screen For Advertising Outdoor Fast Assembly

Led Panel Display Specification

Shenzhen Longrun LED Optoelectronics Co., Ltd, a professional LED display manufacturer, was established in 2009 which has his own R&D department and a total of more than 3,500 square meters of ultra-clean, anti-static plant, the most advanced automatic equipment. Being one of the domestic leading suppliers in LED product application and solution, Longrun has separate purification plant, R&D base, and the industry's most advanced automated production and testing equipment. It dedicates in providing terminal clients with LED applications of high quality and performance and also with the most effective service
Longrun perseveres in carrying on its relentless pursuit of excellent quality, focused on full color LED display's R&D, sales and service. It has its products successfully achieved CCC, CE, FCC, UL etc professional certifications recognized internationally. On quality control, it implements strictly and perfectly under ISO9001: 2008 quality certification system. In daily practices and applications, it emphasizes on 7S management standards. During producing process, it carries out strict quality testing on all processes of IQC, IPQC, QC, CFQC, QA and strict management on supply chain. Until now, Longrun has independently developed and manufactured a complete range of diversified display products. They have covers more than 40 countries with over 3000 success cases in above 10 different application fields including advertising media, stage entertainment, sports stadiums, urban lighting, traffic guidelines, financial institutions etc. Longrun's LED display has won great favor from numerous clients home and abroad for its high definition, easy installation, smart design,stable quality etc

1. Your inquiry related to our products or price will be replied in 12hrs 2. OEM&ODM,any your customized lightings we can help you to design and put into product 3. Distributoership are offered for your unique design and some our current models 4. Protection of your sales area,ideas of design and all your private information 5. Best cost performance and perfect service before and after sales

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. 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 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 wavelength of 620-630nm (red), 520-530nm (green) and 460-470nm (blue), in fact mixed in a particular proportion, can get the pure white. That is, in display field, people use luminous materials with 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 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 aging test, the brightness decay of green LED is around 5%-8%, while blue is around 10%-14% and red is around 5%-8%