Copyright © 1990-2017 by DisplayMate Technologies Corporation. All Rights Reserved.
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Introduction
The iPhone X OLED is among the most anticipated display inside history of the planet!!
The Shift from LCD to OLED Displays
The Display Shoot-Out
Main Topics Covered
Larger Full Screen Display with a New Aspect Ratio of 19.5 : 9
2.5K Higher Resolution Full HD+ 2436x1125 Display with 458 pixels per inch
Industry Standard Color Gamuts
Automatic Color Management
Record Absolute Color Accuracy
Record High Screen Brightness and Performance in High Ambient Lighting
HDR High Dynamic Range Mobile HDR Premium Display
Night Shift Mode for Better Night Viewing
True Tone Viewing Mode
Super Dim Setting
Diamond Sub-Pixels
Display Power Efficiency
Viewing Angle Performance
Viewing Tests
iPhone X Conclusions: A Very Impressive Smartphone Display…
The Best Smartphone Display
The iPhone X is regarded as the innovative and high performance Smartphone display that people have ever tested.
First we have to congratulate Samsung Display for developing and manufacturing the outstanding OLED display hardware inside iPhone X.
See the Display Shoot-Out Comparison Table section below for the complete DisplayMate Lab measurements and test details.
See the Highlights and Performance Results section above to get a detailed overview with expanded discussions and explanations.
See the Display Assessments section for the evaluation details.
The Best Smartphone Display
Improving the Next Generation of Mobile Displays
DisplayMate Display Optimization Technology
Display Shoot-Out Comparison Table
Below we examine in-depth the OLED display for the Apple iPhone X according to objective Lab measurement data and criteria
Detailed Test and Measurement Comparisons involving the iPhone X, the Galaxy Note8, as well as the iPhone 7 Displays
You can directly compare the data and measurement results for your iPhone X while using Galaxy Note8 and iPhone 7 displays
in detail simply by using a Tabbed browser with our comprehensive Lab measurements and analysis for every of the displays.
For each Tab click a Link below. The entries are generally identical with only minor formatting differences,
so you can actually make detailed side-by-side comparisons by just clicking through the Tabs.
Organic Light Emitting Diode
Screen Shape
Height to Width Aspect Ratio
iPhone X display screen is 22% longer than
most Smartphones and widescreen 16:9 TV content.
Screen Size
Screen Area
Subtracting the Top Slot area but not the Rounded Corners
A better measure of size compared to diagonal length.
Supported Color Gamuts
The iPhone X supports 2 Color Gamuts including
the new wider DCI-P3 Color Gamut which is used
inside the 4K TV content.
Total Number of Pixels
Excellent
Sharpness depends about the viewing distance and PPI.
of Red and Blue Sub-Pixels as RGB Stripe displays.
of Red and Blue Sub-Pixels as RGB Stripe displays.
At High PPI this really is generally not visible on account of the
use of Sub-Pixel Rendering.
7.5 inches for White and Green Sub-Pixels with 20/20 Vision
10.6 inches for Red and Blue Sub-Pixels with 20/20 Vision
For 20/20 Vision the minimum Viewing Distance
where the screen appears perfectly sharp to the eye.
Display Sharpness
Pixels are not Resolved with 20/20 Vision
at Typical Viewing Distances of
12 to 18 inches
are inside range of 12 to 18 inches.
Also remember that eye's resolution is really a lot lower for
Red and Blue color content than White and Green.
Appears Perfectly Sharp
for this screen size.
Photo Viewer Color Depth
form of 16-bit color depth within the Gallery Viewer.
The Apple iPhone X doesn't need this issue.
Overall Assessments
This section summarizes the most current listings for all with the extensive Lab Measurements and Viewing Tests performed around the display.
The iPhone X automatically switches for the appropriate calibrated Gamut for your current on-screen content.
photographic images by comparing the displays
to an calibrated studio monitor and TV.
decrease in Brightness with Viewing Angle and
relatively small Color Shifts with Viewing Angle.
Overall Display Assessment
very well within the Lab Tests and Measurements.
Spectroradiometer for 41 Reference Colors
uniformly distributed within the entire Color Gamut.
Image Contrast Accuracy
Performance in Ambient Light
Screen Brightness and Reflectance determine
the Contrast Rating for High Ambient Light.
See the Screen Reflections section for details.
Excellent Calibration
colors and images for both Wide Gamut and
Standard Gamut.
image quality, has both Wide Color Gamut
and Standard Color Gamut modes, with
high Screen Brightness and low Reflectance,
has good Viewing Angles, which is an all around
top performing Smartphone display.
DCI-P3 Cinema Content
Accurate Standard Gamut
Screen Reflections
All displays are mirrors good enough to use web hosting grooming - but which is actually a very bad feature…
We measured the sunshine reflected from all directions and in addition direct mirror (specular) reflections, that are much more
distracting and cause more eye strain. Many Smartphones still have greater than 10 percent reflections that will make the
screen more difficult to read even in moderate ambient light levels, requiring ever higher brightness settings that waste
precious battery power. Hopefully manufacturers will lessen the mirror reflections with anti-reflection coatings and
matte or haze completes.
Our Lab Measurements include Average Reflectance for Ambient Light from All Directions and for Mirror Reflections.
The iPhone X has one from the lowest Screen Reflectance levels that individuals have ever measured to get a Smartphone.
a Spectroradiometer.
to get a Smartphone is 4.4 %.
Mirror Reflections
Measured utilizing a Spectroradiometer and a narrow
collimated pencil beam of light reflected over screen.
The lowest value we have ever measured
for a Smartphone is 5.6 percent.
Brightness and Contrast
that has a 50% Average Picture Level.
Measured Full Brightness
This could be the Brightness for the screen that is entirely
all white with 100% Average Picture Level.
Measured Peak Brightness
has only a tiny 1% Average Picture Level.
Measured Auto Brightness
for both the Manual and Auto Brightness modes.
This will be the Lowest Brightness with the Slider set to
Minimum. This is a good choice for working in very dark
environments. Picture Quality remains Excellent.
Black Brightness at 0 lux
at Maximum Brightness Setting
Contrast Ratio at 0 lux
Relevant for Low Ambient Light
Infinite
Outstanding
Infinite
Outstanding
which is seldom the truth for mobile phones.
Defined as Maximum Brightness / Average Reflectance.
changes while using Ambient Light lux level and
is proportional to the Contrast Rating.
Screen Readability
under High Ambient Lighting. Depends on
the two Screen Reflectance and Brightness.
See High Ambient Light Screen Shots
The Color Gamut, Intensity Scale, and White Point determine the quality and accuracy coming from all displayed images and all
the image colors. Bigger is obviously Not Better as the display should match all of the standards which were used
when this content was produced. For LCDs a wider Color Gamut reduces the power efficiency along with the Intensity Scale
affects both image brightness and color mixture accuracy.
for most Consumer Content and needed for
accurate color reproduction of images.
White Point accuracy is more critical than other colors.
Color Gamut
A Wide Color Gamut is useful in High Ambient Light
as well as some applications. It can be used with Color
Management to dynamically affect the Gamut.
See Figure 2 for your definition of JNCD as well as for
Accuracy Plots showing the measured Color Errors.
Average Errors above 7.0 JNCD are Poor.
Absolute Color Accuracy
See Figure 2 for your definition of JNCD and then for
Accuracy Plots showing the measured Color Errors.
Largest Errors above 14.0 JNCD are Poor.
This is twice the limit for your Average Error.
Dynamic Brightness
Intensity Scale and
accurate Image Contrast and Color reproduction.
Viewing Angles
The variation of Brightness, Contrast, and Color with Viewing Angle is especially important for Smartphones because
of their larger screen and multiple viewers. The typical manufacturer 176+ degree specification for LCD Viewing Angle
Note that this Viewing Angle performance can also be very important for the single viewer because the Viewing Angle can vary
22 percent Decrease
LCD decrease is generally higher than 50 percent.
Contrast Ratio at 0 lux
with a 30 degree Viewing Angle
Infinite Contrast Ratio
is tilted under low ambient lighting.
White Point Color Shift
Small Color Shift
Δ(u'v') = 0.0106
Primary Color Shifts
at a 30 degree Viewing Angle
Largest Color Shift
6.2 JNCD Very Good
Same Rating Scale as Absolute Color Accuracy.
Color Shifts for Color Mixtures
in a 30 degree Viewing Angle
Reference Brown (255, 128, 0)
Small Color Shift
Δ(u'v') = 0.0071
1.8 JNCD Excellent
Color Shifts for non-IPS LCDs are about 10 JNCD.
Reference Brown is a superb indicator of color shifts
with angle as a result of unequal drive levels and
roughly equal luminance contributions from Red
Display Spectra
The Display Spectra for that iPhone X such as the Night Shift mode are measured in Figure 4 below.
The Night Shift mode is designed to affect the color balance from the display in order to decrease the amount of Blue Light
Display Power Consumption
While LCDs remain more power efficient for images with mostly full screen white content (like every text screens on a
white background, by way of example), OLEDs are more power efficient for typical mixed image content simply because they are
emissive displays so their capability varies while using Average Picture Level (average Brightness) with the image content over
the entire screen. For OLEDs, Black pixels and sub-pixels don't utilize any power so screens with Black backgrounds are
very power efficient for OLEDs. For LCDs the display power is fixed and outside of image content. Currently,
OLED displays are more power efficient than LCDs for Average Pictures Levels of 65 percent or less, and LCDs are
more power efficient for Average Picture Levels above 65 percent. Since both technologies are continuing to improve
For OLEDs the Display Power depends for the Picture Content.
a typical variety of image content.
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DisplayMate Display Optimization Technology
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Copyright © 1990-2017 by DisplayMate Technologies Corporation. All Rights Reserved.
This article, or any kind thereof, may not be copied, reproduced, mirrored, distributed or incorporated
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