#led devices

[ledvideo]

Eight aspects of the influence of lamp beads on LED display

The application of LED display is becoming more and more popular, and it can be seen everywhere in the busy streets. In the popularization of display screen application today, what has the greatest impact on the performance of led display screen? What affects LED screen life?

Those who know the LED display industry know that the LED lamp beads have the greatest impact on the display performance.

Visual angle

Traditional lamp beads are square. Square white accounts for a large proportion, which makes the picture unclear

Kellett Gertrude adopts the smallest lamp bead in the industry, Φ 18 round lamp beads, 360 ° free of dead angle, small proportion of white, and the lamp beads are treated with nano sanding technology to reduce external light interference. Some LED displays on tall buildings have high requirements for vertical viewing angle. Angle of view and brightness are contradictory, and large angle of view will inevitably reduce brightness.

Brightness

1. The brightness of traditional LED display reaches 4500-6000cd. Some manufacturers will increase the module current to improve the brightness, which will reduce the life of the lamp beads. The brightness of LED display will decline by 15% - 30% a year.

2. The brightness of Kellett Gertrun LED display screen reaches the standard 7000cd. In addition, the lamp beads use nano frosting technology to reduce the black and white contrast, and the picture is still clear under direct sunlight. The screen control system and automatic light sensitive equipment can automatically adjust the brightness according to the intensity of external light, and avoid light pollution, so as to achieve effective energy-saving effect.

Failure rate

As the full-color LED display screen is composed of tens of thousands or even hundreds of thousands of groups of red, green and blue LED pixels, the failure of any color LED will affect the overall visual effect of the LED display screen. Generally speaking, according to industry experience, the failure rate of LED display screen from the start of assembly to the 72 hour aging before shipment should not be higher than 3/10000 (referring to the failure caused by the LED lamp bead itself).

Antistatic ability

LED is a semiconductor device, which is sensitive to static electricity and can easily lead to static electricity failure. Therefore, the anti-static ability is crucial to the life of LED display screen. In general, the failure voltage of LED in human electrostatic mode test shall not be lower than 2000V.

Life

The theoretical life of LED devices is 100000 hours, which is much longer than the working life of other parts of LED display. As long as the LED devices are of guaranteed quality, the working current is appropriate, the PCB heat dissipation design is reasonable, and the LED display production process is rigorous, LED devices will be one of the most durable components of the LED display machine.

Attenuation characteristic

After a long time of operation, the LED display screen will appear brightness decline and display color inconsistency, mainly due to the brightness attenuation of LED devices. The attenuation of LED brightness will reduce the brightness of the whole screen. Inconsistent brightness attenuation amplitude of red, green and blue LEDs will lead to inconsistent color of LED display screen, which is often referred to as screen mosaic. High quality LED devices can well control the brightness attenuation. The red attenuation shall be less than 2%, and the blue and green attenuation shall be less than 10% according to the standard of 20 mA lit at 1000 hours at room temperature. Therefore, the blue and green LED shall not use 20 mA current as much as possible in the design of the display screen, and it is better to use only 70% to 80% of the rated current.

Size

The size of the LED device affects the pixel distance of the LED display, that is, the resolution. 5mm oval lamp is mainly used for outdoor LED display above P16, 3mm oval lamp is mainly used for outdoor display of P12.5, P12 and P10, 3528 patch LED is mainly used for indoor LED display of P6 and P8, and 2020 patch LED is mainly used for indoor LED display of P2, P3, etc. On the premise that the distance between dots is unchanged, the increase of LED device size can increase the display area and reduce the graininess, but the reduction of black area will reduce the contrast; On the contrary, the LED size decreases, reducing the display area, increasing the graininess, increasing the black area, and increasing the contrast.

Uniformity

The full-color LED display screen is composed of countless red, green and blue LED pixels. The consistency of brightness and wavelength of each color LED determines the consistency of brightness, white balance and chroma of the entire display screen. In order to achieve the matching consistency of brightness changes of red, green and blue LEDs at different angles, it is necessary to strictly carry out scientific design on packaging lens design and raw material selection, which depends on the technical level of packaging manufacturers. The angle consistency characteristics of LED lamp beads can be measured with an LED angle comprehensive tester, which is particularly important for medium and high-end displays.

It is important to know the influencing factors of LED lamp beads on LED display screen to select a high-quality LED display screen.

Thank you for watching. I hope we can solve your problems. Sostron is a professional LED display manufacturer. We provide all kinds of displays, display leasing and display solutions around the world. If you want to know:Does the LED display industry really need 8K resolution? Please click read.

[redlightrising-blog]

How to Recover Quicker from Workouts?

Do you want to reach your athletic potential?

In the last Olympics, you might have noticed more and more athletes using light therapy devices around the Olympic Village and stadium.  You can get huge benefits from putting red and near-infrared light on your muscles.

There are 2 main ways athletes can benefit from Photobiomodulation (Red Light Therapy) devices, in particular red and near-infrared wavelengths.  The first is through preconditioning before an event. It has been proven that time to exhaustion is extended with such light therapy.  Secondly there is after an event, or training session, as Red Light Therapy helps assist recovery and delayed onset of muscle soreness (or the dreaded DOMS as you might know it).

According to Dr Joseph Mercola, red and near-infrared therapy will:

Increase microcirculation in the tissues

Increase tissue oxygenation

Stimulate mitochondria and improve energy production in damaged cells

World-class athletes (Tiger Woods is one of them) have been using phototherapy to speed up recovery from sports injuries for years now.  According to many studies, cells (including muscle cells) exposed to near-infrared light from LEDs grow 150-200% faster than cells not stimulated by this light. These statistics represent so much more than just marginal gains!

How is this super healing power achieved?

As previously mentioned in other articles, NASA has known about the benefits of Red Light Therapy since 1998 and have been using it to benefit their high-performance teams since then.

Near-infrared wavelengths have the ability to penetrate the cells 5cm below the skin, and that is why you are able to generate healing and recovery deep into your muscles.  This is the unique power of the Red Light Therapy technology.

The near-infrared wavelengths increase microcirculation and the formation of new capillaries.  This results in the area receiving more oxygen and nutrients to assist with the natural healing process.  This means that pain can be relieved, muscles will stop aching and recover faster, and inflamed joints will loosen up and improve in mobility.

The visible red and near-infrared light energy induce the same process in the targeted cells. Through the absorption of the light photons, the photochemical reaction eventually causes the production of adenosine triphosphate (ATP), which is the fuel of all cells in your body.

This causes increased synthesis of procollagen in fibroblasts which causes cells to rebuild and regenerate.  The end result of this being increased collagen and elastin synthesis, with the healing and strengthening of damaged tissue.

Due to the energy systems being stimulated in the blood as well, LED phototherapy has a systemic effect on inflammatory or immune cells in nonadjacent tissues to the target area, as well as those cells in the targeted area.  This means that the benefits and energy created will not be limited to the treated area, but will travel to nearby cells as well.

How will this improve my training performance?

Your muscles are full of mitochondria.  Therefore, the stimulation of ATP in your mitochondria will give your muscles more energy to perform, improving physical performance, extending the elapsed time and total number of repetitions to fatigue.  It has also shown to improve the clearance of blood lactate immediately after exercise.

There are studies recorded that support the use of Red Light Therapy to enhance muscle hypertrophy and strength.  Although these were relatively small studies, the potential to improve muscle gains by over 50% compared to a controlled group without the Red Light Therapy over an 8-week training program is incredible.

Yet more studies point to evidence that phototherapy administered before resistance exercise has consistently been found to delay DOMS, reduce fatigue response, and improve post exercise recovery and protecting the cells from exercise-induced damage.  There were decreases in markers of inflammation and muscle atrophy, while protein synthesis and oxidative stress defense were up-regulated.

Recovery plays a huge role in the training cycle.  Through using light therapy, and stimulating mitochondrial action and turning stem cells into healthy muscle tissue, the growth of new muscle cells is stimulated and the repair process following muscle tears incurred through training is enhanced.

Increased collagen and elastin synthesis will speed up muscle repair and therefore muscle growth post workout.   Through the increased blood flow, muscle scarring will be reduced, decreasing the risk of future injuries and immobility.

What intensity matters for maximum results?

Previously we have touched on the intensity of the light, and also the depths that red and near-infrared wavelengths can penetrate.

In order to penetrate deeper into the muscles, 780-850nm wavelengths are advised to have the most effective benefit.  These can penetrate 5cm beneath the skin.

Evidence also recommends the appropriate intensity required for maximal benefit.  Power outputs between 30 and 200mW/cm2 are most effective, with doses of 5 and 6 Joules per treatment area.  Therefore, at 150cm from our Full Stack, this would generate 20mW/cm2 intensity, meaning you would require 6 minutes treatment to accumulate the recommend energy (of 6 Joules) from these studies.  Alternatively at 20cm you would be receiving 100mW/cm2 intensity and require a 1 minute treatment time to accumulate 6 Joules of energy

Other benefits…

Other benefits from a training angle include enhanced circadium rhythm and therefore increased deep sleep, which all athletes will know is imperative to recovery.

Also, for the training males, near-infrared light has been shown to increase levels of testosterone, which is used in increasing muscle size, strength and overall performance. More information on this in a later article though.

In Summary...

Red Light Therapy brings a natural healing mechanism with results that you would only expect from Performance Enhancing Drugs (PEDs)!  It is a non-invasive treatment that can form an important part of your training and lifestyle routing.

We have enough evidence to demonstrate reduced muscle damage, pain and atrophy, while increasing muscle mass, recovery and athletic performance!

If you are looking to maximize your athletic performance, or just enhance your gains, then a Red Light Therapy device can be just the thing you are looking to include in your daily routine to optimize your performance.

If you have any shots of you preparing for your next big session, or as you’re recovering ‘like a beast’, please share these with us on social media and we will give you a shout out!

As always, if you have any questions, thoughts or feedback, please reach out to us through Social Media or our Contact Us page.

Thanks again for supporting us, get out there and enjoy the light!

Kind Regards,

The Red Light Rising Team

[nacsemi-blog]

SunLED is one of the world's leading manufacturers of optoelectronic products. SunLED produces more than 350 million LEDs every month to support customer's demands.