What is the difference between OLED, AMOLED and P-OLED displays – Technology News, Firstpost
FP explainers09 May 2022 17:44:15 IST
Smartphone displays or displays in general have grown tremendously over the years. There was a time when no matter how expensive a phone you got, it would have the same display technology as a mid-range phone – a standard LCD screen. Yes, the resolution and quality would be different, but the underlying technology would be the same.
Cut to 2022, most of your phones now come with some form of OLED display. Not only have we seen a dramatic increase in display resolution, especially in mobile phones, tablets and laptops, but we’ve also seen the quality of displays get a lot better over the years. Rich and vibrant colours, good inky blacks, low response times, high contrast and incredible brightness – we owe OLED screens to all of these advantages.
OLED panels have been around since the 2000s when it was introduced in a car audio system. Later, when it became a bit mainstream, we saw it in some phones, but because it wasn’t cost-effective and looked nothing like today’s OLEDs, we quickly lost them. After numerous improvements and development, it became the best TVs money can buy. Now display technology is making its way back to our phones and personal devices, albeit in three different forms: OLED, AMOLED, and P-OLED.
What are OLED screens?
OLED or Organic Light Emitting Diode is a display technology that passes a current through organic diodes on a glass substrate to create an image. The luminous pixels of an OLED screen emit blue and yellow light. The yellow and blue light combine to form white light, which then passes through red, green, and blue sub-pixels to produce a single pixel. Unlike LCDs, OLED panels do not require a separate backlight. This is one of the many reasons why OLED displays use much less energy, especially when displaying a dark image.
OLED screens have deep, inky blacks and exceptionally good contrast. If no color is displayed, there is no light coming from that area of the screen. This also allows them to create “infinite contrast” or a contrast ratio of 1,000,000:1. That means the darkest part of the screen will be a million times darker than the brightest part. This gives us vibrant colors and a better viewing experience.
OLED panels also have a much better response time, which basically means that each pixel responds to signal changes much faster than a traditional LCD panel. This is the refresh rate that manufacturers refer to. It basically means that an OLED panel can change color 120 times in a second. This gives the photos you view a much brighter and smoother appeal.
OLED panels also take up much less space than your LCD panels, as they don’t use a panel for the backlight. This also makes them cheaper to make. And because they don’t require a backlight to work, OLED screens can sometimes be transparent. This allowed manufacturers to develop in-display fingerprint readers and under-display cameras.
However, OLED screens are not perfect. They are susceptible to much more rapid degradation due to age and UV exposure. Because the images and colors are very bright, one can often see the remnants or “ghosts” of an image on certain parts of the screen, even when it is not displayed. This is called burn-in and it is the biggest phenomenon that renders OLED panels useless after a short period of constant use.
OLED panels are cheaper to produce, but because they are very thin and fragile, to make them look good, like in a TV or mobile phone, you need to use reinforced glass or metal frames. In addition, OLEDs consume more power than a regular LCD screen at maximum brightness.
What are AMOLED screens?
If you buy a premium smartphone with an OLED screen, chances are you are actually buying an AMOLED screen. AMOLED is an acronym for “Active Matrix OLED”, and modern OLED displays in consumer electronics use an active matrix as opposed to passive matrices found in older OLED displays.
The active matrix or thin-film transistor arrays used in AMOLED displays are more energy efficient than most old OLED displays. Samsung dominates the AMOLED display market and has called the best of the best they produce the Super AMOLED display. AMOLED screens usually combine the advantage of P-OLED screens and your regular OLED screens. They are very durable and versatile and therefore tend to cost more.
What are P-OLED screens?
P-OLED stands for Polymer Organic Light Emitting Diode. In its most rudimentary form, it’s a twist on a modern OLED panel, which eliminates most of the drawbacks one gets with an OLED panel.
P OLED displays replace glass substrates with ones made of polymers or plastic. This makes the panel more impact resistant and less prone to breakage. Depending on the type of polymer used, P OLED displays can also be flexible so that they can be used in foldable and rollable devices. Because polymer sheets can be manufactured within much higher tolerances than glass, Polymer OLEDs or P OLED displays can be much thinner.
P OLED screens have some drawbacks. Usually they are not as sharp as modern OLED screens; with that being said, the difference can rarely be noticed. P OLED screens have a greater tendency to burn in