LED Display Technology Share

TEC COMMON CATHODE TECHNOLOGY

TEC Common Cathode Technology has revolutionized the NPP LED display market with high refresh rate IC driver,such as 1.2mm, 0.9mm small pitch LED video wall.

The LED device has two terminals, an anode and a cathode, and each pixel consists of three LEDs (red, green and blue), requiring a total of 6 terminals.

In traditional Common Anode LED panel designs, the terminals of all 3 (red, green & blue) LEDs are wired together and an external ballast resistor is added in series with the red LED to maintain a constant voltage and equalize the voltage drop across all three LEDs. This subsequently reduces available space for the LEDs making fine pixel pitch harder to achieve, while it is also an additional heat source and accelerates the aging process and reduces the lifetime.

In Common Cathode technology, separate, dedicated power supply voltages are supplied to the red, green and blue LEDs enabling the power supplied to the red LED to be controlled separately and eliminating the requirement for a ballast resistor.

This technology dramatically reduce the power dissipation of the LED display system and create very efficient power consumption across the range. Here the advantage below:

1, Saving 30% power consumption.

2, 25% colder than normal LED screen.

3, 30% longer LED life span.

Do not always think about rigid box panel screen??

The video display are always square or long square since the LED industry started. But in recent years, more and more designers are looking for creative design for their work different from others. TEC engineers develop soft LED display with FPC technology, since then, LED displays have taken the exact same shape but with the any size, any shape, any curvature customization of TEC, display owners are no longer restricted to this rigid box shape. Soft PCB and hard PCB combine together for the perfect seamless curving LED screen, especially for round LED screen, like column, cylinder shapes. What’s more, it can be made for small diameter like 0.8m concave and convex round screen. This distinguish yourself from the previous market : only one direction flexible LED screen, rubber LED modules or rigid LED panel.You will have the following advantages with soft PCB LED displays:

1, Seamless curving LED screen

2, Big degree concave & convex screen

3, Smallest diameter column screen

Please check our Tourit series soft LED curtain from: http://tecdisplays.com/productinfo/263848.html

The differences between nationstar SMD LED and 

Kinglight SMD LED ?

TEC Displays used middle and high-end quality and cost-effective SMD LED from brand company, like Nationstar and Kinglight, some of clients will ask what is the main differences between them? Here we have some simple explanations.

  Firstly of all, Nationstar is bigger and longer history LED packing company than Kinglight, price is much more for sure. Kinglight is much more competitive this is why suggested to use in the rental led displays applications, they both have warranty on LEDs.

For nationstar LED:

Luminous decay : 5% in 2,000hours, 10% every year after one year.
Dead LED pixel rate : 0.01% within two years, 0.03% after two years.
Working life : 100, 000 hours, 5-10 years or so in theory.

For kinglight LED:

Luminous decay  : 7-10% at the first year, 12-19% every year after one year.
Dead LED pixel rate : 0.02% in 2,000 hours, 0.04% after two years.
Working life : 80,000 hours, 5-8 years in theory.

Why You Need a fine pitch LED Video Wall for Your Control Room?

Staff and operators in control rooms, command centers and NOCs are in charge of overseeing company infrastructure, security, operations, telecommunications, safety and more. They rely heavily on accurate and timely (mostly real time) data that helps them make informed decisions about their business operations.

For example, a communications service provider—providing TV, internet and phone service to a large population—has a wide variety of variables to carefully look at, in order to minimize downtime, anticipate problems before they happen, reduce business impact of any issues that do occur and ensure a reliable service. They will be monitoring and studying:

• Weather patterns - to prepare, or act upon, any weather-related failures.
• TV channel ratings - to make informed business decisions on media distribution contracts.
• Bandwidth and connectivity - to make sure there aren’t any interruptions or slow service.
• Social media interaction - to improve customer engagement and communication and provide a better customer service.
• And many more data sources relevant to their specific needs.

A similar broad set of data inputs is needed for a control room in just about every field from oil and gas to security to transportation or banking.

No matter the industry, teams making decisions, monitoring vital infrastructure or supporting core business functionalities need data and they need to be able to visualize it and work on it together to make collaborative decisions based on that data.

In the example above of the communications provider, it's easy now to imagine the vast and diverse stream of data pouring in every second. How can the control room staff make sense of all of it? They need to use various simultaneous dashboards to display data in a sensible way and then they need a video wall to display those dashboards and allow operators and staff to switch among them as needed based on the challenges of the day.

Video walls are the perfect platform for displaying multiple input sources and allowing operators to change those input sources, or resize them as needed on a large bank of synchronized displays. Video walls do this by allowing administrators to display different sources simultaneously using zones or multi-windows.

Without a video wall, each team member in the control room may be isolated in a silo, it’s hard to ensure everyone is using the same, complete information when making decisions or recommendations. By having a video wall, all the necessary information is shared and seen by everyone, and of course team members can easily reference it during discussions and decision making.

Whether you have web-based dashboards, spreadsheets, video, or image, real-time video streams, live web streams, you need a video wall that can support as many types of content sources as possible. You also need a video wall that gives you the flexibility to change content sources and zone layouts on the fly.

AOB, COB, GOB???

AOB: Admixture on board, it is patent of AET. 
  AOB is the newest technology from AET due to the disadvantages of COB and GOB, it uses the special material filled between LEDs, and costing film on LEDs, protects the LED PCB well like COB or GOB without effecting the brightness,heating and view angle of LED display.

   Advantages and disadvantages: 

    1, Anti-crash, more than 6 Kgs pulling force.
    2, Anti-dust, waterproof.

    3, PCB colour uniformity, AOB Colour of LED and PCB uniformity is the best one than COB,GOB.

    4, Maintenance of LEDs, Single LED can be replaced easily.
    5, Seamless module connection.

COB: Chip on board.

COB is Chip on board, which is a different chip encapsulation technology, all chips directly integrated packaged on the special PCB board, while what we said encapsulation tech is putting three RGB led chips to integrate inside an SMD electronics package to produce the individual SMD diodes.

Advantages and disadvantages: 

1, High protection for LEDs.
2, LED Colour non-uniformity.  
    COB has a risky during the process of wavelength and color splitting and picking for all chips on the boards, which make it difficult to get perfect color uniformity for whole display.
3, The maintenance for COB is also a problem waiting to be solved.
4,  Gap bewteen module connection.

GOB: Glue on borad.

GOB is Glue on board to get high protection led display, which is an analogy as module encapsulation. It is working on the whole display module, by using a patented transparent glue covering the surface of module’s PCB board already with thousands SMD lamps soldered on it, finally the module getting the special shield on its surface.

Advantages and disadvantages: 

1, High protection for LEDs.
2, The maintenance for GOB is also hard to solved.
3,  light reflection because of glue water covered.
4, Gap between modules due to glue water.

how to choose LCD or LED fine pitch video wall?

How to choose the correct indoor fine pitch LED displays ?

1.View angle

View angles is deciding how many audience can view the LED screen clearly . Wider view angle , more people can view it . So it can make your cost and advertising maximization . The view angle is cause by encapsulation of the LEDs , therefore , if you have enough budget , choose the better encapsulation of the LED, and also take care of the mask covering the LED board.

2. Brightness 

Someone must noticed if the brightness is too high , it's hard for our eyes , but if too low , the screen will not clear enough. So the standard brightness for indoor LED display is 600-1000 nits.

3. Flatness

Bad flatness will absolutely make the effect of the LED screen worse , and the standard flatness is keeping ±1 mm . Our fine pitch LED display flatness reach to ±0.2 mm. So , when we are making the solution , die-casting aluminum cabinet will be the best for indoor LED displays .

4. The LEDs

There are two type of LEDs for indoor , white SMD LED and black SMD LED , the black LEDs we are using mostly for the pixel pitch which is lower than 5mm , and we have to choose the black LEDs for indoor LED screen , this is a very important point. All our LED black face LED.

5. Dead pixels

The LED screen are made with so many small pixel LEDs ,  less dead pixels , better effect . It is also according to the technology and original material , when you asking the price , make sure the original material is what you need .  it is better to be a brand company.

What is fine pixel pitch LED video wall ?

Fine pitch LED video wall meas the pixel pitch range below 2.5mm, such as 1.9mm, 1.8mm....0.75mm

1,What is LED Display? 
LED display is a flat panel display, which uses light-emitting diodes as a video display. An LED panel is a small display, or a component of a larger display. They are typically used outdoors in store signs and billboards, and in recent years have also become commonly used in destination signs on public transport vehicles or even as part of transparent glass area. LED panels are sometimes used as form of lighting, for the purpose of general illumination, task lighting, or even stage lighting rather than display.

2,What is pitch size of LED Display?

Pitch size means the distance between the center of two LEDs, it is the most important factor for video quality:
Such as Pitch 2.5mm means the distance between 2 led is 2.5mm, it also means much more pixel in one square meter, 2.5mm will play very good quality video.

3,What is Soft or Flexible LED Display? 
The flexible LED curtain is a kind of LED display which is same to normal LED display,but the LED is mounted on DFR material which looks like window cloth,the biggest advantage of led curtain is 90% lighter and thinner than the traditional  LED display. Plz check the following photo,you will know  why we called it soft LED display.
here is the detail: 

4,How to find a good screen for your project? 
---You can choose LED Display according to the best view distance (The viewer and LED screen distance):
the viewing distance of a LED display is determined by 2 factors:
1. Pixel Pitch  (Important factor )
2. Screen Size
And as for most situation, pixel pitch plays the most important factor for a dedicated LED display. Here's the relationship between the viewing distance and pixel pitch, for your reference:
P2mm LED Display-------------------  Best Viewing Distance 2-24m
P3mm LED Display-------------------  Best Viewing Distance 2.5-25m
P4mm LED Display-------------------  Best Viewing Distance 3-28m

P6mm LED Display-------------------  Best Viewing Distance 3.5-40m
P7.8mm LED Display------------------- Best Viewing Distance 4-42m
P9mm LED Display-------------------   Best Viewing Distance 4.5-50m
P10mm LED Display------------------- Best Viewing Distance 5-55m
P12mm LED Display------------------- Best Viewing Distance 8-66m

P16mm LED Display------------------- Best Viewing Distance 9-75m

P20mm LED Display------------------- Best Viewing Distance 10-80m

5,What is LED? 

There are two types of LED panels: conventional (using discrete LEDs) and surface-mounted device (SMD) panels. Most outdoor screens and some indoor screens are built around discrete LEDs, also known as individually mounted LEDs. A cluster of red, green, and blue diodes is driven together to form a full-color pixel, usually square in shape. These pixels are spaced evenly apart and are measured from center to center for absolute pixel resolution. Pop LED type: SMD1010,SMD1515,SMD1921, SMD2020, SMD2727, SMD3535 

6,What is indoor LED display? 

Most indoor screens on the market are built using SMD technology — a trend that is now extending to the outdoor market. An SMD pixel consists of red, green, and blue diodes mounted in a single package, which is then mounted on the driver PC board. The individual diodes are smaller than a pinhead and are set very close together. The difference is that the maximum viewing distance is reduced by 25% from the discrete diode screen with the same resolution

Indoor use generally requires a screen that is based on SMD technology and has a minimum brightness of 600candelas per square meter (cd/m², sometimes informally called nits). This will usually be more than sufficient for corporate and retail applications, but under high ambient-brightness conditions, higher brightness may be required for visibility. Fashion and auto shows are two examples of high-brightness stage lighting that may require higher LED brightness. Conversely, when a screen may appear in a shot on a television studio set, the requirement will often be for lower brightness levels with lower color temperatures; common displays have a white point of 6500–9000 K, which is much bluer than the common lighting on a television production set.

7,What is oudoor LED display? 

For outdoor use, at least 2,000 cd/m² is required for most situations, whereas higher-brightness types of up to 5,000 cd/m² cope even better with direct sunlight on the screen. (The brightness of LED panels can be reduced from the designed maximum, if required.)

8, LED display future trend, fine pitch LED for professional and commercial use instead of LCD.
 Fine pixel pitch, small pixel pitch LED 0.7mm, 0.8mm, 1.0mm to 2mm