Micro LED Display is new but far less mature than OLED, and it costs a lot more, too. Even if it has plenty of advantages, it is too soon to jump to the conclusion that Micro LED will supersede OLED.

1. Micro LED vs OLED:
Competition between the
Two Display Technologies
It is believed the population paying attention to the next generation
display technology Micro LED has grown larger after Samsung
demonstrated the 146" Micro LED modular TV at CES 2018.
The large-scale display, named The Wall, is the first Samsung display
made with Micro LED technology and features considerably high
resolution and color contrast. It is comprised of numerous 9.37-inch
display modules and thus, according to its maker, can be tailored into
different sizes, whether the desired size is to go up to be larger or down
to a much smaller one.
Indeed, the emergence of Micro LED does steal some of the limelight
from OLED that has been dominating the television market for the past
few years, but can Micro LED really challenge OLED?
Self-emission is what these two display technologies have in common.
Traditional LCD displays require LED backlight modules to emit light
through layers from behind to generate images.

2. Each pixel in an OLED display can emit light of a certain color
independently and be switched on and off individually. That explains
why OLED displays can have distinguished black level and color
contrast. Samsung’s Micro LED displays shares the same properties, so
it can surely achieve effects such as very high contrast, extremely deep
blacks, and fast response time.
However, Micro LED has higher brightness and is more stable than
OLED because of its inorganic nature. In other words, red, green, and
blue Micro LED pixels do not have luminance decay issues. Compared
with that, each OLED pixel more or less suffers from luminance decay
and the speed of decay varies.

3. To some extent, that makes Micro LED sound better than OLED, but,
the reality is, OLED will not be that easily replaced.
Micro LED: High Cost and Difficulty
Almost all the big names we can think of in the tech industry see Micro
LED as the next big thing. Samsung launched a massive modular display,
while Apple acquired Micro LED developer LuxVue and even filed a
patent covering a foldable iPhone sporting a Micro LED screen. People
started to expect an Apple Watch and/or iPhone that feature Micro LED
technology.
Even if the high brightness, wide color gamut, and modular design of
Micro LED displays attract a lot of attention, this technology is still at
the R&D phase. Its production is far more expensive and difficult than
that of OLED. It is definitely challenging to produce and place several
millions of Micro LED chips, let alone to make them work smoothly.

4. Sony started its Micro LED development early but has currently stopped
the R&D related to Micro LED TV. It produced in 2012 the first
generation Micro LED display using 6.22 million LED chips. Back then,
the prototype was very power-hungry and the yield of its production
was unsatisfactory. Despite the fact that a lot of problems have been
resolved, it is still unlikely to mass produce Micro LED products at this
point.
It is also not easy at all to downsize Micro LED displays from over 100
inches to somewhere between the size range of mainstream
televisions. The Wall from Samsung was in every way astonishing;
however, it was intended to be manufactured as a large cinema screen,
which means it is unknown whether it can truly be downsized.
Samsung claimed its Micro LED display can be customized into different
sizes and shapes to adapt to consumers’ needs, whereas currently the
company has still not been able to maintain the pixel density to achieve
4K resolution while downsizing the screen. Even if it can produce mid-
sized Micro LED TVs for households, the pricing will be difficult because
it depends heavily on the production cost, which is still very high.
OLED: High Flexibility and Multifunctionality
LG Display, while Samsung stole the limelight with its gigantic modular
TV, also launched its new display technology—a 65-inch rollable 4K
OLED TV. The size is no longer the point here, but the flexibility is.
The 4K OLED TV can be rolled up as a giant poster and hidden, stored in
the container when it is not in use, just like a projection screen.

5. As OLED is made of organic light-emitting materials, not
semiconductors, it can be used for a broad range of display types. For
example, transparent OLED (TOLED) displays have been retailed.
Phosphorescent OLED (PHOLED) displays, compared with OLEDs, even
have higher level of energy efficiency that can be for use in large
displays, TVs, as well as general lighting.
In addition, OLED can also be printed on plastics, which renders highly
flexible but low cost displays.
Most of all, whether it’s OLED, TOLED, PHOLED, or POLED, the difficulty
of manufacturing is so much lower than that of Micro LED. They have
been widely traded in the commercial display market. It also will not
wait too long for OLED TVs to prevail.
A few years ago, OLED TVs were alien to most of the customers, while
the circumstance improved with the prices being hugely reduced. In the
next one to two years, a 55-inch 4K OLED TV will probably be priced at
below USD 1,000. The cost-performance index will surely go up, which
is good news to customers.
Conclusion
However, we are not saying OLED is facing a definite bright future.
Before all types of OLEDs become prevalent, some technologies need to
refine. Apart from the battery problems micro OLED displays
encounter, how to miniaturize OLED components is also an issue
engineers have to figure out.

6. OLED will not stop growing, either. Not just the 65-inch rolls able OLED
TV, LG also released the next generation of the Wallpaper OLED TV. Just
like its predecessor, the Gen 2 Wallpaper OLED TV sticks to the wall
with a magnetic force.
In the past, LED flexible Screens only existed in the fantasies, but now
we know we could have more to expect about it in the coming years
after CES 2018.
By contrast, Micro LED is new but far less mature than OLED, and it
costs a lot more, too. Even if it has plenty of advantages, it is too soon
to jump to the conclusion that Micro LED will supersede OLED.
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