Haven’t you ever felt clueless when the salesperson goes on with the never-ending list of the newest technology in the market?
It is most likely that you must have come across two very similar sounding words- OLED and QLED in case you have deliberated on purchasing a 4K television. Since the two terms sound similar it is important to know what they actually mean.
Is it the case of Hen and the chicken or is it something else altogether?
Hence, it can be said that the case of OLED Vs QLED is not the same as the case of the hen and the chicken!
Table of Contents
Before we understand how OLED functions lets first understand how LED works:
What happens in LED is that a “Junction diode” is created. Here the flow of current is in one direction. Two semiconductors are placed together, one positively charged and the other negatively charged.
The surplus electrons in the positively charged semiconductor move in the direction of the negatively charged semiconductor. In this transition, excess energy is released and this lights up. In case they are connected the other way, you will notice that the current does not flow and the light does not turn up.
Types of OLED
Advantages of OLED
- The plastic or organic external layers of an OLED are sleek, light and flexible than the glass layers in an LED or LCD.
- The light-emitting layers of an OLED are light hence making the substrate of the OLED flexible and not rigid. Although it should be noted that OLED substrates can be made out of both plastic and glass.
- OLED displays are bright. Since the organic layers are used which are thinner than any of the inorganic crystalline layers, the conductive and emissive layers of an OLED can be stacked one upon the other making them multi-layered. Also, LEDs and LCDs require glass for support, and glass absorbs some light. OLEDs do not require glass.
- Since OLEDs do not particularly require glass as the support giver, it is brighter as glass absorbs some of the light.
- OLEDs do not need backlighting as they generate their light themselves. As OLEDs do not use any backlighting, the power consumption is lesser. For example- the use of OLED screen in the smartphone will render longer battery life.
- Size ability of OLED is wide as OLEDs can be made in small to thinner yet large sizes.
OLEDs have wider viewing angle as they produce their own light; right about 170 degrees.
Disadvantages of OLED
- The manufacturing costs are high.
- Water or any form of liquid can damage the system.
Advantages of QLED
- Bright vibrant Colours
- No lag or burn-in
- Renders sharp colours even in extreme brightness
Disadvantages of QLED
- The problem is that the quantum dots in current QLED TVs do not emit their own light. Instead they simply have the light from a backlight passed through them, in just the same way that an LCD layer does on non-QLED/LED backlit sets.
Brands that support OLED & QLED
The battle between OLED and QLED is often concluded to be the story about branding. You can say that almost every OLED panel found inside OLED TV is made by LG Displays, and the QLED panel is made by Samsung.
QLED Vs OLED
From the basic understanding of how QLED works, we understand that it uses the backlight and to top it all, the quantum dots further add to the brightness while not fading out the colours.
OLEDs can not produce this amount of light as QLED does. If the TV is placed in a relatively dark room, OLED might work just as fine, but in a well-lit space, QLED produced unmatched brightness with saturated colours.
It checks how quickly a pixel switches its output as per the complete display. The faster it is, the lesser lag it will have.
On an average, the response time of a QLED screen is of 2 to 8 milliseconds which is way too long in comparison with OLED which takes about 0.1 millisecond, making OLED the undisputed winner here.
Theoretically, QLEDs produce better colours and also have a wider spectrum of colours to offer. But the performance is yet to be tested in real life.
One of the major drawbacks of QLED screens is that the quality of colour and contrasts both keeping falling once the viewer moves from the centre.
On the other hand, OLED screens offer extremely wide viewing angles that go up to 84 degrees.
Although some of the QLED screens come with anti-glare coating, intrinsically OLED wins this segment.
On the basis of how OLED technology operates and the claims made by LG (which produces OLED) which says the screens will lose only 50% brightness if they are used every single day for at least 5 hours for 54 years!
QLED screens are tried and tested. They certainly do not last for a lifetime but they do have a decent life span.
Considering this we can say that QLED wins here.
The dark blacks and the bright white make up the contrast. The contrast can be achieved by having extremely dark shades of black; as in comparison the white automatically starts to look brighter. This alone can give great levels of contrast.
QLED has to deliberately dim the light produced in the background and block the residual light. This always leaves room for flaws called “Light bleed”, it’s a phenomenon when the light that has been tried to be blocked still penetrates through.
OLED, on the other hand, does not have to face this issue as it has the ability to turn off the light and go completely dark. Therefore being able to produce the darkest of blacks, helps OLED ace the contrast ratio segment between OLED Vs QLED.
OLED has been around in the market for quite some time and has come a long way from having a maximum size of 55 inches to 88 inches in today’s date.
But the star here remains QLED with a whopping 100 inches which may further grow.
Consumption of Electricity
As mentioned earlier, OLEDs are highly energy efficient. Even though QLED technology is recent and hence often it is thought to be more energy-efficient, OLED is a sure shot winner here.
We can only make apple to apple comparison hence we should take the fact into account that both the technologies make a premium segment of screens.
The most economical screen that uses QLED is just a couple of numbers less than OLED.
One can say that they are priced the same.
With OLED being around in the market and having a good market grasp, QLED does have to push it to make it through.
Given the great feature that QLED has to offer, like: Unimaginable brightness with sharp details, life-size screen size and the unbeatable life span.
While OLED has proved its worth in the market by delivering features like Wide viewing angles, better contrasts, less power consumption, lighter in weight.
These both shall remain the king in their own spheres till the next generation come up with the best of both worlds perhaps!