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Samsung Galaxy S Super OLED Display Shoot-Out

 

Dr. Raymond M. Soneira

President, DisplayMate Technologies Corporation

 

Copyright © 1990-2010 by DisplayMate Technologies Corporation. All Rights Reserved.

This article, or any part thereof, may not be copied, reproduced, mirrored, distributed or incorporated

into any other work without the prior written permission of DisplayMate Technologies Corporation

 

 

Series Overview                                                                                         

This is part of a comprehensive article series with in-depth measurements and analysis for the OLED and LCD displays in the Google Nexus One, the Apple iPhone 3GS, the Motorola Droid, the Samsung Galaxy S, and the Apple iPhone 4. We will show you the good, the bad, and also the ugly unfinished rough edges and problems lurking below the surface of each of these displays and display technologies, and then demonstrate how the displays can be improved by using images that have been mathematically processed to correct color and imaging errors on each smartphone so you can compare them to the originals. The series begins with the Google Nexus One and Apple iPhone 3GS. It then continues with higher performance “Super” displays in the Motorola Droid, the Samsung Galaxy S, and the Apple iPhone 4. Finally, there is a five way Smartphone "Super" LCD-OLED Display Technology Shoot-Out that compares all of the units simultaneously.

 

 

 

 

Introduction

A key element in the success of all smartphones and mobile devices is the quality and performance of their display. There have been lots of articles comparing various smartphone LCD and OLED displays and technologies, but almost all simply deliver imprecise off-the-cuff remarks like “the display is gorgeous” with very little in the way of serious attempts at objective or accurate display performance evaluations and comparisons – and many just restate manufacturer claims and provide inaccurate information, performance evaluations and conclusions. This article objectively evaluates the display performance of the Samsung Galaxy S Super OLED display based on extensive scientific lab measurements together with extensive side-by-side visual tests.

 

The Galaxy S display is distinctive in several respects: it is an Organic LED display, which is an emissive display technology, whereas most mobile devices have an LCD display, which uses a static backlight behind the panel. And it has Samsung’s next generation premium OLED display marketed as a “Super AMOLED” display. The AM stands for Active Matrix, but all smartphone displays have that. The screen is 4.0 inches diagonally and has a high-resolution high-density 800x480 pixel display with a screen Aspect Ratio of 1.67, which is higher than the iPhone’s 1.50, but lower than standard widescreen HDTV displays, which have an Aspect Ratio of 1.78. There are several versions of the Samsung Galaxy S smartphone. We tested the Vibrant model for T-Mobile.

 

The Samsung Galaxy S, Motorola Droid and Nexus One use the Google Android OS. The Galaxy S and Nexus One were tested with Android version 2.1 and the Motorola Droid with version 2.0.1. We discovered that Android 2.1 only processes 16-bit color for its principal Browser and Gallery photo viewer, which substantially decreases image and picture quality. Google acknowledged these problems for Android 2.1 phones including the Nexus One and Galaxy S. The next major release of the Android OS will fix these issues and provide full 24-bit color and improved scaling. Click Here to read the Google and Cooliris statements commenting on our results.

 

 

FIGURE 1

Figure 1.  Revealing Screen Shots for the Google Nexus One and Samsung Galaxy S.

 

Nexus One:  NASA Photo - Sunset on Mars

Gallery Application: Lots of false contouring and image noise

 

Motorola Droid:  NASA Photo - Sunset on Mars

Gallery Application: The same as it looks on a studio monitor

 

Nexus One:  Intensity Scale Ramps

Gallery and Browser Apps: Coarse steps and tinting on white

 

Motorola Droid:  Intensity Scale Ramps

Gallery and Browser Apps: Very smooth and artifact free

Figure 1.  Revealing Screen Shots for the Google Nexus One and Samsung Galaxy S.

The test patterns are 24-bit bmp at the native resolution of each display.

 

Results and Conclusions

The display was evaluated by downloading 24-bit native resolution 800x480 test patterns and 24-bit HD resolution test photos to the phone. Note that we are testing and evaluating the display on the Galaxy S with whatever hardware, firmware, OS and software are provided by Samsung.

 

Color Depth and Granularity:  16-bit Color Dithered to 24-bit Color

An absolutely shocking discovery for Android 2.1 smartphones is that the principal Android Browser and Gallery Applications use only 16-bit color, so Red and Blue only have 32 possible intensity levels and Green only has 64 possible intensity levels. Google acknowledged these problems for Android 2.1 phones including the Nexus One, Motorola Droid and Galaxy S. The next major release of the Android OS will fix these issues and provide full 24-bit color and improved scaling. Click Here to read the Google and Cooliris statements commenting on our results. The Galaxy S, which was tested with Android 2.1, performs somewhat better than the Google Nexus One and Motorola Droid under Android 2.1. It appears that the Browser and Gallery applications in the Galaxy S are updated with dithering or filtering that partially obscures the 16-bit interface.

 

Display Image Quality, Colors and Artifacts:  Very Good

Other than the over saturated colors due to a Color Gamut that is too large and the issues mentioned under Color Depth and Granularity above, the Galaxy S delivers very good picture quality that is relatively free of artifacts. The PenTile arrangement of the OLEDs has only two sub-pixels per pixel instead of the usual three, so it sometimes appears more pixilated than its stated resolution implies – it’s excellent for photographic images but is noticeably degraded for colored (red, blue and magenta) text and graphics. In fact, the Galaxy S only has a combined total of 0.38 Million Red and Blue sub-pixels, whereas the iPhone 4 has 1.23 Million, more than three times as many.

 

The Measurements with Explanations and Interpretations:

The Measurements section below has details of all of the lab measurements and tests with lots of additional background information and explanations including the display’s Maximum Brightness and Peak Luminance, Black Brightness, Contrast Ratio, Screen Reflectance, Bright Ambient Light Contrast Rating, Dynamic Color and Contrast, Color Temperature and White Chromaticity, Color Gamut, Intensity Scale and Gamma, the variation of Brightness, Contrast Ratio and Color Shift with Viewing Angle, the Power Consumption and Light Spectrum of the display.

 

The Viewing Tests:  Accurate Image Contrast But Too Much Color

We compared the Galaxy S side-by-side to a calibrated Professional Sony High Definition Studio Monitor using a large set of DisplayMate Calibration and Test Photographs. All of the photos on the Galaxy S had too much color saturation, to the point of appearing gaudy, particularly faces and well known objects such as fruits, vegetables, flowers, grass, even a Coca-Cola can. Photos that include very color saturated objects, such as a fire engine, were in some cases painful to look at. These effects are similar to setting an HDTV to a Vivid picture mode and then turning up the Color and Sharpness Controls. The punchy and excessively vibrant looking images on the Galaxy S may initially get lots of oohs and aahs, like in many of the early reviews, but after a while the gaudy looking images will become tiresome and unpleasant.

 

Factory Calibration and Quality Control:  Good

The overall factory calibration and quality control for the Samsung Galaxy S display is good. Unlike the “non-Super” OLED on the Nexus One, which has horrible artifacts and factory calibration, the Galaxy S Super OLED was reasonably well calibrated, with fairly smooth and artifact free intensity scales. The color and gray-scale tracking are also very good, which means that the Red, Green and Blue primaries have been carefully calibrated and balanced.

 

Suggestions for Samsung:

The Super OLED display is a tremendous step forward over the earlier non-Super OLEDs, such as in the Google Nexus One. It’s an excellent display, but here are some suggestions on how to make it better: The major shortcoming is operating with a color gamut that is too large, producing gaudy images that have too much color saturation. You can trade this excess color saturation to boost the screen brightness by adjusting the software color calibration matrices, which will also improve the color accuracy of the display. Similarly, the White point is too blue, lower it to D6500, which will improve color accuracy, slow the aging of the Blue OLED, reduce power consumption, and improve battery run time. Part II will include some important suggestions for correcting the Automatic Brightness control, which is very important for screen readability, viewing comfort and preserving battery power. Finally, keep after Google to fix the image scaling and 16-bit interface issues in Android 2.1 and 2.2 – it significantly reduces the picture quality of your display

 

This article is a lite version of our intensive scientific analysis of smartphone and mobile displays – before the benefits of our advanced mathematical DisplayMate Display Optimization Technology, which can correct or improve many of the deficiencies – including higher calibrated brightness, power efficiency, effective screen contrast, picture quality and color and gray scale accuracy under both bright and dim ambient light, and much more. If you are a manufacturer and want our expertise and technology to turn your display into a spectacular one to surpass your competition then Contact DisplayMate Technologies to learn more.

 

Samsung Galaxy S Conclusion:  Excellent Mobile Display wins Best New Mobile Display Technology Award

The Samsung Galaxy S Super OLED is an excellent mobile display. What is particularly impressive is how rapidly Samsung has been improving their OLED technology. The “Super” OLED is a much more refined display with many fewer artifacts and a much better factory calibration. Particularly impressive is the very low screen reflectance, which is among the lowest we have ever measured – outdoors it can have a significant impact on screen visibility. The over-saturated gaudy colors are still there – they need to be properly managed and can be used constructively in a calibrated fashion to counteract the effects of glare from ambient light (Part II). The big question remaining for OLEDs (and not covered by our tests) is whether the previous uneven aging over time for the red-green-blue OLED sub-pixels has been solved. While OLED is still a relatively young display technology that has not yet been perfected to the performance levels of the very best mature LCDs, the Galaxy S is already an impressive display for an upcoming and rapidly evolving technology, so it earned our Best New Mobile Display Technology Award. Samsung needs to keep up the good work and keep pushing hard because there is lots of competition and everyone (except the competition) is looking forward to the next generation “Super-Duper” OLEDs…

 

 

The Measurements with Explanations and Interpretations

This section explains all of the measurements incorporated in the article. The display was evaluated by downloading 24-bit native resolution 800x480 test patterns and 24-bit HD resolution test photos to the Samsung Galaxy S. Note that we are testing and evaluating the display on the Galaxy S with whatever hardware, firmware, OS and software are provided by Samsung. All measurements were made using DisplayMate Multimedia Edition for Mobile Displays to generate the analytical test patterns together with a Konica Minolta CS-200 ChromaMeter, which is a Spectroradiometer. All measurements were made in a perfectly dark lab to avoid light contamination. All devices were tested with their Backlight set for maximum brightness with the Automatic Brightness light sensor control turned off, and running on their AC power adapter with a fully charged battery, so that the battery performance and state was not a factor in the results. For further in-depth discussions and explanations of the tests, measurements, and their interpretation refer to earlier articles in the DisplayMate Multimedia Display Technology Shoot-Out article series and the DisplayMate Mobile Display Shoot-Out article series.

 

Konica Minolta CS-200

 

1.  Peak Brightness:  365 cd/m2  –  305 cd/m2 Full Screen  –  Somewhat Low for a Mobile Display

This is the maximum brightness that the display can produce, called the Peak White Luminance. We measured 365 cd/m2 when the screen was white in only one small spot, and 16 percent lower, 305 cd/m2 when the screen was mostly white, which is typical for most web and app content. This is due to power management (below). 305 cd/m2 is fine for indoor lighting but is somewhat low for outdoors. Fortunately the Galaxy S has a very low Screen Reflectance (below), which dramatically helps screen readability under high ambient lighting.

 

2.  Black Level Brightness:  Less Than 0.005 cd/m2  –  Outstanding

The Black Level is the closest approximation to true black that the display can produce. Almost all displays wind up producing a visible dark gray on-screen instead of true black. This is a major problem for LCDs. The glow reduces image contrast and screen readability and can be distracting or even annoying in dark environments. It ruins the dark end of the display’s intensity/gray scale and washes out colors in the image. But note that in bright ambient lighting the Black Level is irrelevant because reflections off the screen dominate the screen background brightness. OLED is an emissive technology, so the Galaxy S is able to produce very close to true black, which is absolutely stunning in dark ambient lighting. In fact, the Black Luminance was so low that the CS-200 was unable to measure it, so we report it as less than 0.005 cd/m2, which means it is nearly invisible to the eye even in the dark.

 

3.  Contrast Ratio  –  Only Relevant for Low Ambient LightGreater Than 61,000  –  Outstanding

The Contrast Ratio is a measure of the full range of brightness that the display is capable of producing. It is the ratio of Peak Brightness to Black Level Brightness. The larger the Contrast Ratio the better, but it is only relevant for low ambient lighting because reflections off the screen dominate the display’s Black Level in bright ambient lighting. Note that any Contrast Ratio over 5,000 will not be visually significant except in fairly dark viewing environments with dark image content. Because the Galaxy S OLED display produces an extremely dark black its Contrast Ratio is spectacularly large, among the highest we’ve ever measured for a production display. Don’t confuse this true Contrast Ratio with the tremendously inflated Dynamic Contrast Ratios that are published by many manufacturers.

 

4.  Screen Reflectance of Ambient Light:  4.4 Percent  –  Excellent

The often overlooked Screen Reflectance is actually the most important parameter for a mobile display, even more important than Peak Brightness. The screen reflects a certain percentage of the surrounding ambient light, which adds to the screen background, washes out the image, and makes it harder to see what is on the screen. In high ambient lighting the Screen Reflectance can significantly reduce the visibility and readability of screen content. The lower the Screen Reflectance the better. The value for the Galaxy S of 4.4 percent is among the lowest values we’ve ever measured for mobile devices. Lowering the Screen Reflectance increases the cost of a display, but it’s the easiest and best way to improve screen readability under bright ambient light. The Screen Reflectance measurements were done in accordance with VESA FPDM 308-1, Reflectance with Diffuse Illumination, using an integrating hemispherical dome and a calibrated diffuse white reflectance standard.

 

5.  High Ambient Light Contrast Rating:  69 – 83  –  Excellent

In the same way that the Contrast Ratio measures the screen contrast under low ambient lighting, the Bright Contrast Rating specifies the relative screen contrast under high ambient lighting. It is the ratio of Peak Brightness to Screen Reflectance. The higher the value the better you’ll be able to see what’s on the screen when you are in a bright location. The values of 69 – 83 (depending on which peak brightness value is used) is very high, so the Galaxy S is among the best mobile displays for high ambient lighting. For all mobile devices the High Ambient Light Contrast Rating is much more important than the Contrast Ratio.

 

6.  Dynamic Color and Dynamic Contrast:  Yes  –  But for Power Management

Some displays dynamically adjust the color, gray scale and contrast on every image that is displayed using an internal automatic image processing algorithm. The goal is generally to jazz up and “enhance” the picture by stretching and exaggerating the colors and intensity scale. It is similar to the Vivid mode found in many digital cameras and HDTVs. Since it alters and frequently distorts the image it is better left as an option for people who aren’t concerned with picture accuracy and fidelity. Since the Dynamic modes are generally triggered by changes in Average Picture Level, a very simple test for Dynamic Contrast is to separately measure the brightness of full screen Red, Green and Blue images and then compare them to White, which should equal their sum. If they don’t agree then there is Dynamic Color and Contrast processing. For the Galaxy S, the measured Luminance for Red=85, Green=232 and Blue=23 cd/m2. Their sum is 340 cd/m2, which is 11 percent greater than the measured value for White, 305 cd/m2, so the Galaxy S employs some Dynamic Contrast. For the PenTile OLEDs this appears to be caused by intentional power management – similar to Plasmas.

 

7.  Color Temperature and Chromaticity:  9,688 degrees Kelvin  –  Whites are Too Blue

White is not a single color but rather falls within a range that is normally specified by a Color Temperature. For accurate color reproduction of most content, including photographs, images and web content it needs to be set to the industry standard D6500, which is how most professional photo and video content is color balanced. D6500 is the color of natural daylight and is similar to a Black Body at 6500 degrees Kelvin. 9,688 Degrees is pretty far off and gives everything on the screen, including photographs, a noticeable bluish cast or tint, like Cool White fluorescent bulbs. Given the aging and efficiency problems with blue OLEDs, it is surprising to see a bluish tint on the Galaxy S display, which means that the Blue OLED is being driven extra hard. Better to back it off and improve color accuracy, OLED aging, power consumption, and battery life all at the same time. The measured CIE Chromaticity Coordinates of the White Point are u’=0.1813 v’=0.4490. See the White Points in Figure 2 below.

 

8.  Color Gamut:  Much Larger than the Standard Gamut  –  Colors are Inaccurate and Over Saturated

The Color Gamut of a display is the range and set of colors that it can produce. The only way that a display will deliver good color and gray scale accuracy is if it is accurately calibrated to an industry standard specification, which for computers, digital cameras, and HDTVs is sRGB or Rec.709. It’s the standard for most content and necessary for accurate color reproduction. If the Color Gamut is smaller than the standard then the image colors will appear too weak and under-saturated. If the Color Gamut is greater than the standard then the image colors will appear too strong and over-saturated. The important point here is that a Color Gamut larger than the standard is also bad, not better. Wider gamuts will not show you any colors or content that are not in the original images, which are almost always color balanced for the sRGB / Rec.709 standard. Wider color gamuts simply distort and decrease color accuracy and should be avoided, except for some special applications.

 

Figure 2 shows the measured Color Gamut for the Nexus One and the Samsung Galaxy S alongside the Standard sRGB / Rec.709 Color Gamut in a CIE 1976 Uniform Chromaticity Diagram. The dots in the center are the measured White Points for the phones along with the D6500 Standard, which is marked as a white circle. The outermost curve are the pure spectral colors and the diagonal line on the bottom right is the line of purples. A given display can only reproduce the colors that lie inside of the triangle formed by its primary colors. Highly saturated colors seldom occur in nature so the colors that are outside of the standard sRGB / Rec.709 triangle are seldom needed and are unlikely to be noticed or missed in the overwhelming majority of real images. When a camera or display can’t reproduce a given color it simply produces the closest most saturated color that it can.

 

FIGURE 2

Figure 2.  CIE 1976 Uniform Chromaticity Diagram showing the Color Gamut and White Point for the Samsung Galaxy S

 

Both the iPhone 4 and Galaxy S perform poorly with reference to the standard Color Gamut, which is the black triangle in Figure 2. The iPhone has much too small a color Gamut and the Galaxy S has much too large a color Gamut. As a result the iPhone produces images that have significantly too little color saturation and the Galaxy S produces images that have significantly too much color saturation. This applies to all external content viewed on the displays, including web content, such as images, photos and videos. This was easy to see in the viewing tests where we compared the displays side-by-side to a calibrated Professional Sony High Definition Studio Monitor using a large set of DisplayMate Calibration and Test Photographs. Galaxy S photos had too much color, to the point of appearing gaudy, particularly faces, and well known objects such as fruits, vegetables, flowers, grass, and even a Coca-Cola can. The iPhone had the reverse problem, all of the photos looked somewhat pale, flat, washed-out and under-saturated.

 

9.  Intensity Scale, Image Contrast and Gamma:  Very Good Match to the Standard

The display’s intensity scale not only controls the contrast within an image but it also controls how the Red, Green and Blue primary colors mix to produce all of the on-screen colors. So if it doesn’t obey the industry standard intensity scale then the colors and intensities will be wrong everywhere on-screen because virtually all professional content and all digital cameras use the sRGB / Rec.709 standard, so it’s necessary for accurate image, picture and color reproduction. The standard intensity scale is not linear but rather follows a mathematical power-law, so it is a straight line on a log-log graph. Its slope is called Gamma, which is 2.2 in the standards. In order to deliver accurate color and intensity scales a display must closely match the standard. Figure 3 shows the measured (Transfer Function) Intensity Scale for the Samsung Galaxy S and iPhone 4 alongside the industry standard Gamma of 2.2, which is a straight line.

 

FIGURE 3

Figure 3.  Intensity Scale for the Samsung Galaxy S

 

The Galaxy S provides a good match with respect to the standard intensity scale, which is needed in order to accurately reproduce images and pictures for most content. Gamma is the slope of the intensity scale, which should be a constant 2.2 like the straight line in Figure 3. The Gamma for the Galaxy S is 2.36, which is a very good match to the standard.

 

10.  Brightness Decrease with Viewing Angle: 

28 percent decrease in 30 degrees  –  Surprisingly large for an OLED

A major problem with many displays, especially LCDs, is that the image changes with the viewing angle, sometimes dramatically. The Peak Brightness, Black Luminance and Contrast Ratio generally change with viewing angle (in addition to color, see below). Some display technologies are much better than others. A pure OLED display should not show any viewing angle effects, however, the Galaxy S shows a surprisingly large variation in Brightness with viewing angle, undoubtedly due to the touchscreen layer and anti-reflection absorption layer that are on top of the OLED layer. At a moderate 30 degree viewing angle the Peak Brightness of the Galaxy S fell by a surprisingly large 28 percent to 221 cd/m2.

 

11.  Black Level and Contrast Ratio Shift with Viewing Angle:  Not Visually Significant

The Black Level and Contrast Ratio also vary with Viewing Angle, but since they are both spectacular for the Galaxy S their variation is of no visual significance.

 

12.  Color Shift with Viewing Angle:  Surprisingly Large for an OLED

Colors generally shift with viewing angle whenever the brightness shifts with viewing angle because the Red, Green and Blue sub-pixels each shift independently and vary with intensity level. At a moderate 30 degree viewing angle Red shifted the most, by Δ(u’v’) = 0.0229, which is 6 times the Just Noticeable Color Difference. Green shifted the least at Δ(u’v’) = 0.0104 and Blue shifted by 0.0147. These are surprisingly large for an OLED, again, undoubtedly due to the anti-reflection absorption layer that are on top of the OLED layer.

 

13.  RGB Display Power Consumption:  Relatively High  –  Not a Green Display…

Unlike LCDs, the power consumed by OLEDs varies with the brightness of the individual Red, Green and Blue sub-pixels, so the power consumption varies with the brightness and color distribution of each image. When the display is all black, the OLED display effectively uses no power, although the drive circuits still consume some. Maximum power is used when the display shows Peak Intensity White over the entire screen because all OLED sub-pixels are at their maximum brightness. It is possible to indirectly determine the power used by the display by measuring the AC power used by the Nexus One with different test patterns. The average power used when the screen is all black is used as the baseline and is subtracted from the power measured for the other states.

 

Table 1 lists the Measured Relative Power, the Measured Luminance, and the Relative Luminous Efficiency, which is just the Measured Luminance divided by the Measured Relative Power, and normalized to 1.0 for White, which has the highest total efficiency.

 

Table 1.  Samsung Galaxy S LCD Display Power Consumption

Maximum Backlight Full Screen

Black

Peak White

Measured Relative Power

0 watts

1.13 watts

Measured Luminance

0 cd/m2

305 cd/m2

Relative Luminous Efficiency

--

1.00

 

 

14.  OLED and LCD Spectra:  Very Interesting

The spectra of an LCD display is just the spectrum of the backlight filtered through the individual Red, Green and Blue sub-pixel filters within the panel. OLEDs are emissive devices so the spectra of the Samsung Galaxy S is just the sum of the individual Red, Green and Blue OLED spectra, modified slightly by the touchscreen layer and anti-reflection absorption layer through which their light must pass. We thought it would be very useful and interesting to compare the spectra of the Galaxy S with the spectra of the Apple iPhone 4, so we asked Konica Minolta to loan us their flagship CS-2000 Spectroradiometer to perform the measurements. The spectra for White, which is the sum of the Red, Green and Blue primaries is shown in Figure 4 for both the Galaxy S and Apple iPhone 4.

 

FIGURE 4

Figure 4.  RGB Spectra for the iPhone 4 and Samsung Galaxy S

 

 

As expected the OLED RGB spectra are relatively narrow because of their high color saturation. The iPhone 4 LCD RGB spectra is a filtered broadband spectrum. The backlight for the iPhone is a white LED, which consists of a Blue LED with a yellow phosphor.

 

About the Author

Dr. Raymond Soneira is President of DisplayMate Technologies Corporation of Amherst, New Hampshire, which produces video calibration, evaluation, and diagnostic products for consumers, technicians, and manufacturers. See www.displaymate.com. He is a research scientist with a career that spans physics, computer science, and television system design. Dr. Soneira obtained his Ph.D. in Theoretical Physics from Princeton University, spent 5 years as a Long-Term Member of the world famous Institute for Advanced Study in Princeton, another 5 years as a Principal Investigator in the Computer Systems Research Laboratory at AT&T Bell Laboratories, and has also designed, tested, and installed color television broadcast equipment for the CBS Television Network Engineering and Development Department. He has authored over 35 research articles in scientific journals in physics and computer science, including Scientific American. If you have any comments or questions about the article, you can contact him at dtso.info@displaymate.com.

 

About DisplayMate Technologies

DisplayMate Technologies specializes in advanced mathematical display technology optimizations and precision analytical scientific display diagnostics and calibrations to deliver outstanding image and picture quality and accuracy – while increasing the effective visual Contrast Ratio of the display and producing a higher calibrated brightness than is achievable with traditional calibration methods. This also decreases display power requirements and increases the battery run time in mobile displays. This article is a lite version of our intensive scientific analysis of smartphone and mobile displays – before the benefits of our advanced mathematical DisplayMate Display Optimization Technology, which can correct or improve many of the deficiencies – including higher calibrated brightness, power efficiency, effective screen contrast, picture quality and color and gray scale accuracy under both bright and dim ambient light, and much more. Our advanced scientific optimizations can make lower cost panels look as good or better than more expensive higher performance displays. For more information on our technology see the Summary description of our Adaptive Variable Metric Display Optimizer AVDO. If you are a display or product manufacturer and want our expertise and technology to turn your display into a spectacular one to surpass your competition then Contact DisplayMate Technologies to learn more.

 

 

Article Links:  Google Nexus One OLED Display

Article Links:  Samsung Galaxy S Super OLED Display

Article Links:  Apple iPhone 3GS LCD Display

Article Links:  Motorola Droid LCD Display

Article Links:  Apple iPhone 4 LCD Display

 

Article Links:  Smartphone "Super" LCD-OLED Display Technology Shoot-Out

 

Article Links:  Mobile Display Shoot-Out Article Series Overview and Home Page

Article Links:  Display Technology Shoot-Out Article Series Overview and Home Page

 

 

Copyright © 1990-2010 by DisplayMate Technologies Corporation. All Rights Reserved.

This article, or any part thereof, may not be copied, reproduced, mirrored, distributed or incorporated

into any other work without the prior written permission of DisplayMate Technologies Corporation

 


                                                                                                                                                                                                                                                                                                                   
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