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Yes, exactly the similar mechanism we use in movie theaters.

In today’s technologically advanced world, there are tons of televisions brands, feature options, and software functions one could choose from.  

But with ample options, It’s always easy to get confused in making a proper buying decision. 

Note: This information is only for assisting one to make a proper decision and is unbiased for sales. 

The first and foremost aspect to decide before purchasing a television is. 

What is your purpose of buying a Television?

1. Home entertainment usage
2. Commercial and research purpose

What are the different sizes of TVs?
Some of the global standard TV sizes for home usage are:

17 Inches
19 Inches
24 Inches
32 Inches
38 Inches
40 Inches
42 Inches
43 Inches
49 Inches
50 Inches
55 Inches
60 Inches
65 Inches
75 Inches

How to measure the size of a TV?

Just not the TV, Any display devices across the world are not measured horizontally or vertically. 

Display devices are measured diagonally. 

What is the display of a device is called?

The display of a device is called a Display panel or screen. 

What is the display panel made of?
The display panel is made of  Pixels. The pixels are arranged in X-axis and Y-axis is the resolution of a display panel. 

What is a pixel?
A Pixel is the smallest unit of a display panel that is square in shape and contains sub-pixels in it. 

What are sub-pixels?
Every pixel contains 3 rectangular sub-pixels, each sub-pixel has its own predefined colors such as red, green, and blue in order.  
(Sub-pixels can be observed under a microscope)

What is the resolution of the display device?
On a display panel, the number of pixels arranged in the X-axis multiplied by the number of pixels in the Y-axis is called the resolution. 

What are the different resolutions of TVs?

There are currently 6 major resolutions of televisions available for home usage naming. 
Standard Definition - SD
High Definition - HD
High Definition Ready - HD Ready
Full High Definition - Full HD
Ultra High Definition - UHD 4K
Ultra High Definition 8K - UHD 8K

Classify the number of pixels based on each resolution.
SD - 720 x 480p
HD - 1280 x 720p
HD Ready - 1366 x 768p
Full HD - 1920 x 1080p
UHD 4K - 3840 x 2160p
UHD 8K - 7680 x 4320p

What is the impact of resolution on the picture we see?

The impact of resolution on the picture is straight forward. The more number of pixels is equal to the bigger picture.  While playing low-resolution content, the chances of image distortion on small screens are very less.

But, When it comes to large screens. The distortion is very common. Until unless there is a Picture Upscaling Engine.

What is Picture Upscaling Engine? 

A Picture Upscaling Engine or Image Engine is a piece of software in the firmware of your smart tv. The main goal of Image Engine is to convert and upscale low-resolution pictures into high-resolution pictures.

Example: Let’s say you are trying to play visual content from 1980s which are basically shot in very low resolutions, on your latest UHD 4K Smart Tv.  The picture engine intelligently recognizes the resolution, colors, aspect ratio and scales the same content to a bigger screen by improving the picture quality, colors by resampling and adding more layered pixels.

How many colors can a LED Tv Panel produce?

The number of colors the pixels in a LED Tv panel can produce is dependent on the bits of the display panel.  

There are 2 types of panels for home-usage. 
1. 8 Bit panel
2. 10 Bit panel

An 8 Bit panel can produce, 256 shades of Red X 256 shades of Green X 256 shades of Blue. That is 16.7 million colors.

A 10 Bit panel can produce, 1024 shades of Red X 1024 shades of Green X 1024 shades of Blue. That is 10.7 billion colors.

What are the different types of smart tv panels based on pixel structures?

There are 2 major panel types based on the pixel arrangements. 

1. IPS Panel
2. VA Panel

What is IPS Panel?
The abbreviation of IPS is  In-Plane Switching.  The liquid crystals are aligned in parallel. This enables IPS Panel to produce a Wide viewing angle of 178 Degrees & enhanced rich colors.  The minor drawback is, the black colors are not shown as fully black. 

What is VA Panel?
The abbreviation of VA is Vertically Aligned.  The liquid crystals are aligned vertically. This enables to produce deeper blacks but loses rich colors and wide viewing angles. 

What is the Viewing Angle?
The viewing angle is the maximum angle at which the picture can be experienced with the loss of brightness and rich colors.

What is Refresh Rate?
The number of times the Smart TV display refreshes per every second is called Refresh Rate.  Refresh rate is measured by Hz (Hertz).

Some of the popular refresh rates are 30Hz, 60Hz and 120Hz.

What are the different types of LED TV Display Panels?
LCD Panel
LCD - LED Panel 
QLED Panel
OLED Panel

LCD Panel 
Liquid crystal displays are the type of flat panel displays, in which a liquid crystal gel is the primary form of operation in the display panel.  The pixels and sub-pixels are made out of crystal gel and the crystal gel component is present between 2 thin glass layers which forms the display panel. In LCD TVs fluorescent tubes are used as backlights. 

LCD - LED Panel
LCD - LED Panel is often miss represented as  “ LED Panel” is used by almost all television brands across the globe.  LCD -LED means Liquid Crystal Display - Light Emitting Diode. 

Do clearly observe, this type of panel-based television has an LCD display but the backlight is made of LEDs.  Hence called LCD - LED Televisions. 

QLED Panel
Quantum Dot Light Emitting Diode Panel, Is a type of LCD Panel and an additional layer of Quantum Dot filter. 

The filter enables light to pass through the panel more efficiently and enables more rich colors than a regular LCD Panel.  Technically in best QLED tv in India and the world have self-assembled quantum dots on diffuser sheets are typically between 5 and 50 nm in size.

There is a major price difference between LCD and QLED due to additional expenses on Quantum Dot Diffuser Filter. 

You can check out our best QLED TV in India with flagship hardware and software at "most affordable led tv price".

OLED Panels
Organic Liquid Crystal Panel is these specific panels in which each and every pixel are made out of individual tiny LED light.  

The "OLED led tv price" are very expensive compared to any other type of panels due to the number of LED lights. 

When it comes to picture quality, brightness, and viewing angles the OLED Panels are top-notch compared to any other display panels. 

What is Backlight?
Backlight system is the light emitting system installed behind the panel of Smart TV. It works like a torch behind the film. Refer the image for better understanding.

Types of Backlights

  - Direct Light Emitting Diode
ELED - Edge Light Emitting Diode

In DLED the backlight system is placed right behind the display screen. In this case, The screens look brighter and colorful than any other type of displays. Typically the DLED based "led tv price" is 20% higher than other backlight types.

In ELED the backlight system is placed at the edges of display structure.  In this case, adequate light cannot reach the middle of the screen and can cause dimness in certain parts of the screen.  The led tv price of ELED Backlight TVs are much cheaper than DLED and OLED.

What is a Smart TVs?

A Smart TVs are flat panel televisions which has facility to connect to Internet and stream limited content and perform limited smart actions. Basically loaded with Java based operating systems such as Tizen and Web OS. 

Feature are limited to streaming online content only and many of these tv dont even have browser and other utility apps. 

What is an Android TV?

Android TVs are operated on high level Java operating system called Android.  Official Android TVs by Google are less limited in comparison to Smart TVs.  

Apart from just the content apps, Official Android TVs come with Google voice assistant, Browser, Multiple media players, games and many utility applications. One can also download apps designed only for TVs from Google Play TV. 

What is Android AOSP Tv?

 Android AOSP TVs are advanced Android TVs.  AOSP means Android Open-source Operating System.  In this, a large number of both mobile phone and native TV based apps can be installed.  A numerous number of applications, games, utility apps, education and conferencing apps can also be installed.  Its is also fully configured for Google Voice Assistant. AOSP also provides opportunities for developers to develop applications.  The only drawback is that, AOSP doesn't come with pre certified DRM. Digital Right Management is responsible streaming Full HD and 4K content on TVs.  

The television brand has to separately get the certification done from Google Widevine for the same. 

Which is the best to buy TV Online India?
With all the above mentioned features and details.  You can decide the best suitable tv for you by yourself. 

Which are the Best Smart TV for Online Classes and Professional Video Conferencing?
Instead of naming a specific brand or the model name. Let us help you with the features list that needs to be in the best smart TV for online classes.

1. High-definition web camera with noise cancellation mic.
2. Android based Smart TVs with high hardware configuration.
3. TVs that support side loading of video conferencing applications.
4. TVs that support bluetooth or wire based mouse and keyboard.
5. Has dual band Wi-Fi and Ethernet connectivity port.

How to know the best upcoming tvs in India?

A lot of premium branded and non branded Smart & Android TVs are launched every year in India. But the biggest problem is the confusion to choose among, knowing the launch date and differentiating features.

Click the link to know specifically about Ridaex upcoming tvs in india.