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hey there it's Alex from iFixit last
year ALPA released his first smartphone
using an LED display the iPhone 10
joining Google Samsung and LG in their
move away from traditional LCDs why did
Apple hold out so long what are the
differences between these displays and
what does he mean for us in the world of
repair find these answers let's get
inside and find the difference between
LCD and an O LED display so let's start
by talking about the LCD the LCD stands
for liquid crystal display and it works
by sandwiching a bunch of components
together and creating an image as a
whole it all starts here at these LEDs
they form a bright white light that gets
reflected off of the backplate and then
back through all these filters through
the liquid crystals the liquid crystals
obscure part of the light and let the
rest through the color filter which
splits it up into the red green and blue
that makes up your image so let's look
at how that works in natural phone so if
I turn on this display and lift up the
reflector plate we can see the very
bright white light that bounces down
from here and right back into the
display then that goes through and forms
a subpixels so let's look at that under
a microscope looking at this display we
can very clearly see the sub pixels the
three lines that form each individual
pixel so when the liquid crystal
obscures part of the red green or blue
it forms different colors to our eyes
here we can clearly see the blue and the
red only using part of the sub pixels
while this white area uses all three of
the pixels to its full potential now
that we've learned about LCDs let's talk
about Oh le d-- displays OLEDs stands
for organic light-emitting diode which
really highlights the difference between
the two in an OLED display each
individual pixel shines its own light
meaning it doesn't need a backlight
reflector play or any of these
complicated parts which leaves us with a
very thin much more flexible display so
let's look at that under a microscope to
learn more
looking at this LED display we can
really see the difference between LCD
and
in the LCD we saw very clear red green
and blue stripe always lit by the
backlight in this oily display we can
see the individually lit diodes that are
only on when used so in this black area
we can see that there's absolutely no
diodes on right now
this tragedy means that the colors are a
lot more accurate and it's also a way
more power efficient with all these
obvious benefits in the OLEDs why hasn't
Apple changed over a lot sooner than
they have well it turns out it all has
to do with ease of manufacture LCDs are
cheap to make and easy to produce
whereas OLEDs have that organic
component which is really hard to make
and not everyone can make it it turns
out that a lot of the manufacturers that
have led phones are also the ones that
produce a LED displays Apple makes a lot
of phones which means they need a lot of
panels so when they have a small supply
they can only make unlimited run of
phones like we saw in the iPhone 10 so
what does this mean for repair well
looking at LCDs this is what we know
this is what's everywhere right now and
while they do have a lot of failure
points like the backlight LEDs
either failing or becoming an even or
the liquid crystal layer breaking
they're also really cheap to get which
makes the repair also very cheap LEDs on
the other hand have very few failure
points and they're really bendy displays
also makes them harder to break means
that they don't need to be repaired as
often however they are also more
expensive to get meaning that the repair
is also more expensive but as OLEDs
become more popular in the market we
might see their price drop reaching the
equilibrium with the repair market for
more educational content and tear downs
scry for our channel and I'll see you
next time
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