What is the right screen LED backlighting for classroom interactive panels?
Why should you be worried about this? Well, if you were buying a small laptop or a small television you may not have to worry so much about what technology and quality of Screen LED backlighting is being used.
Most of the technology being used have some differences in the way the LED lights are placed, in the design that impacts visibility, reproduction of images and quality of the images on screen. For a smaller screen size, you would not be worried much.
But, if you are making an investment in a large screen say, 65 inch, 75 inch, 86 inch panel for your classrooms, then the Screen LED backlighting technology becomes a crucial factor. You will not be changing your interactive panels in a year or two, like you would change your mobile phone, laptop, or TV at your home. Plus, the panel should cater to a large classroom and not just a living room.
You and your teachers would expect to use interactive educational content, videos, resources from the internet, etc. The display quality them becomes mission critical and it becomes imperative that you understand the differences between the different technologies available and check with your manufacturer what they are offering.
First and foremost, and LED is nothing but an LCD screen that uses LEDs as a source of illumination. The LED lights are placed behind the screen that is visible to you; and the illumination of all or some of the LEDs behind the screen is what produces that stunning contrast or dimming of images that you see on your screen.
There are basically three types of LED backlighting options/ designs that are used by most if not all panel/TV manufacturers including companies that manufacture interactive panels for schools and colleges.
As you can see in the self-explanatory pictures, the three types of LED backlighting technologies vary according to the way the LEDs are placed behind the screens.
|LEDs cover the entire backside of the LCD panel||Offshoot of full-array backlighting, but use fewer LEDs across the back panel||Use an array of LED backlights along the outer edges of the screen|
|High end TVs that are heaviest and often thickest||High end TVs that are heavier and often thicker||Lesser LEDs used, thin and lighter|
|Better overall brightness and contrast||Edge areas of the screen tend to be brighter than the centre area|
|Most effective local dimming of each LED leads to perfect blacks||Has local dimming, improves blackness of an image and best in class picture quality||Does not offer local dimming and picture quality is not as good|
|Exceptional contrast ratio of up to 10,000,000:1||Exceptional contrast ratio of up to 10,000,000:1||Low contrast ratio compared to D-LED and full array backlighting|
|Superb motion reproduction||Peak level of output and give superb motion reproduction||Motion reproduction not as good as D-LED and full array|
|Most Expensive||Expensive||Comparatively cheaper|
A Dynamic Local dimming model (D-LED) strikes a balance between the two and pushes for optimisation not only in terms of controlling the dim lit models but also reducing the thickness of the lightning panel.
Out of all the manufacturers only Senses Electronics provides panels with D-LED Backlighting screens. BenQ, GloBus, NewLine and iBoard all come with E-LED backlighting screens. None of the manufacturers offer full-array backlighting screens.
In Addition to Screen LED Backlighting technology we also looked at additional display features from the spec sheet of each interactive Panel Manufacturer; and the findings are as under:
To learn more about Senses Interactive panels write firstname.lastname@example.org
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