LED TV is one type of LCD TV. We can say LCD is the mother of LED. LED( light-emitting diode) used light-emitting diodes for display illumination while in LCDs ( liquid crystal display) used fluorescent lights for display light. The first manufacturer tried cold cathode fluorescent lights for illumination. Later they used light-emitting diodes for this purpose. That got good results with light-emitting diodes, so now LCDs are more common. Technically they both are same not big differences in them.
They used LCD (liquid crystal display ) panels for controlling display lights of the screen. These panels are made from two polarized sheets with liquid solution filled in between. When electricity passes through this clear solution, it aligns the crystals, in this way light can pass through them.
If you want to know the bigger differences between Televisions, Then keep reading there are three
Types of backlighting used by manufacturers for display screen
- CCFL backlighting
- Full array backlighting
- Edge lighting
Let discuss them in detail:
CCFL backlighting
One of the older forms of backlighting is CCFL for display technology. Inside the TV, a series of this backlighting sits across. This technology was used to illuminate all sides of the picture evenly. But this display badly affects the quality of the picture. CCFLs are bigger so take more space. They were used in LCDs that’s why LCDs were thicker than LEDs.
Full array backlighting
In LED TVs this CCFL is replaced by full array lighting. The screen is comprised of zones, now some parts of the picture can be lit or dim at the same moment. This whole process is called local- dimming ( it is a feature which helps to fulfil picture demands, where to keep parts lighted or dimmed) Due to local dimming process LEDs providing good quality, of image.
Due to full array lighting, LEDs have high market demand.
- Edge lighting
Another form of backlighting is edge illumination. As it is clear from the name, this lighting is for edges. Lights fixed on all corners/ edges of LCDs in a way that screen become brighter and display picture looks more clear.
By using this technology, manufactures can design thinner TV. Compared to CCFL LCD with old tv.
For better display manufacturer of popular companies, for example, Samsung and Sony used the local dimming gap between full array backlit and edge-lit. They set there own modern style of edge-lit Feature. Samsung designed its advanced technology and named it as “infinite Array” while Sony company developer named it as “ slim backlight master drive”. By edge-lit design, they keep the product slim and local dimming feature provide them with good picture quality.
OLED / QLED
While discussing modern TV technology, you need to familiar with these two terms. An OLED( organic light-emitting diode) display have a panel of pixels sized organic material that is highly responsive to electric energy. Every small pixel has the quality to turn on or off on their own.
OLED provides detailed contrast and best per pixel display than any other device in the market. Due to this quality, these displays are called emissive. They don’t demand any additional light they are smart in size only a few mm.
QLED is not like OLED. However, it provides a TV with quantum dot materials, which increases the brightness and efficiency of TV. It also enhances the colours of the display screen, which increases HDR ( High Dynamic Range) capacities.
Currently, Samsung is working to combine both technology QLED and OLED to give audience best out of both.
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