Everything you need to know about the WQHD Super AMOLED Display

July 7, 2014 | Comments | Tomorrow Works

About two weeks ago, Samsung's World's First Broadband LTE-A smartphone was launched. The Galaxy S5 Broadband LTE-A is not only three times as fast as the LTE but also features 5.1" WQHD Super AMOLED display, which has drawn a lot of attention. So what is so eye-catching about WQHD Super AMOLED display? We at Samsung Tomorrow are here to tell you about the WQHD Super AMOLED display and its advantages.

 

 

WQHD: Don't be satisfied with what you're used to

 

The WQHD is known to be 187% clearer than the FHD. How different is the WQHD from the FHD when in use? Let’s check out the demo of FHD and WQHD displays below:

 

FHD (upper) vs. WQHD

FHD (upper) vs. WQHD

 

 

As you can see, the detail of the bird’s hair is more elaborate, and the colors are softer and natural in the WQHD. Likewise, the WQHD can represent even the hair, the eyebrows, and the skin wrinkles in far more detail.

 

It's sometimes hard to think about display quality since we already have such clear and vibrant displays on the market. But the matter of fact is that these displays are simply what we have gotten used to, and there is certainly room for improvement. With the WQHD you don’t have to be satisfied with what you're accustomed to. The WQHD can show you more – improved readability, more vivid three-dimensional effects, and the aesthetic beauty – which will bring viewers closer to "the real thing".

 

 

The 3,686,400 pixels

 

The difference between the latest WQHD and the existing FHD can be compared with figures, too. While the FHD (Full HD) has 1,920 x 1,080 resolution (2,073,600 pixels in total), the WQHD (Wide Quad HD, or just QHD) has 2,560 x 1,440 resolution (3,686,400 pixels in total) with the same 5.1" screen. Accordingly, the ppi of the WQHD (577 ppi) is much higher than that of the FHD (432 ppi).

 

WQHD of the Galaxy S5 Broadband LTE-A FHD of the Galaxy S5

2,560 x 1,440 (3,686,400 pixels in total)

577 ppi

1,920 x 1,080 (2,073,600 pixels in total)

432 ppi

 

*Note: Total pixels and the PPI

The WQHD has 1,612,800 more pixels in total than the FHD. But comparisons can be a bit tricky unless mentioning the display size or the ppi (pixels per inch). PPI explains the display resolution by the number of pixels in one inch (25.4mm), so you must check out the ppi when you compare two displays of different sizes. Just for your information, PPI can be calculated from knowing the resolution in pixels (width and height) and the size of the screen in inches:

PPI calculation

And since each pixel consists of RGB (red-green-blue) components of a color, the higher the ppi is, the more detailed color the display can represent, which becomes closer to the reality.

 

*Note: Resolution by devices

Resolution by devices

So far, the WQHD is the best resolution for the smartphone. Tablets and the TVs have different resolutions respectively optimized for different use. One important note is that every display has been evolving to a higher resolution, which will continue until it reaches the boundary of delicacy that human eyes can tell.

 

 

But when the resolution gets better, users can be concerned about the battery life. How did the WQHD Super AMOLED display deal with this matter? In order to minimize the power consumption while maintaining the optimal resolution of the WQHD, Samsung has newly developed the three following elements (These were first developed for the Galaxy S5's FHD Super AMOLED display and have been more improved for the WQHD Super AMOLED display.):

 

 New OLED with higher efficiency

The AMOLED display has organic material that emits light inside OLED (Organic Light-Emitting Diodes). Samsung developed new OLED having more efficient organic material to lower power consumption of the display.

 

 New RAM of the Display Driver IC

The Display Driver IC (DDI) is one of the core elements of the display that allows texts and images to be shown on the screen. Samsung developed a new RAM located inside the DDI and it enabled the display to consume power only when the user activates the screen or application by pressing a button or swiping the screen. As long as the user doesn't activate the phone, the battery power is not consumed even if the screen or a certain application is turned on.

 

 New Color Composition Ratio of major UX

In cooperation with UX Team, a new color composition ratio which helps minimize the battery consumption was designed and applied to the major UX such as the home key. This delicately re-adjusted color combination led the WQHD to lower the power consumption without affecting the vibrant color representation of the Super AMOLED.

 

To realize the WQHD resolution that is higher than that of TVs (most TVs have FHD resolution these days) in a single smartphone was challenging in many aspects. Developers in Samsung had to review all the existing development process and decided to start from the beginning. For the creation of the WQHD smartphone, the planning and manufacturing process as well as the equipments was newly developed.

 

 

WQHD X Super AMOLED

 

As we discussed, the WQHD offers the highest resolution for the smartphone at present. In addition, Samsung was able to maintain relatively lower power consumption with new elements, mainly by making the most out of the advantages of the AMOLED display. As a matter of fact, the combination of the WQHD resolution and Super AMOLED display generates a synergy effect.

 

Samsung Electronics has been using Super AMOLED display that delivers rich and accurate colors with higher contrast ratio. The color representation coverage of the Super AMOLED is wider than comparative TFT LCD and it creates aesthetic beauty and enhanced three-dimensional effects. This merit of Super AMOLED display is maximized as the resolution gets higher. When having higher PPI, Super AMOLED's visual quality is maximized and the gap between it and LCD deepens. Given the fact that the resolution of the display will become higher and higher, that's why Super AMOLED is clearly expected to take center stage.

 

 

What will be the next step?

 

How will the smartphone display evolve further in the future? As mentioned above, the evolution will possibly end when it arrives the confines of human eyes' capacity that distinguishes the detail of the images. After that, the display will be developed into flexible display or transparent display which will enable us to use the smart devices in a wider range of environments in more various way. For now, it seems that we first have to wait for the WQHD to be standard on smartphone displays. With superior display panel combined with unique software technology, Samsung is ready for next steps so that the display is easy on your eyes and smarter than ever.

 

*All functionality features, specifications and other product information provided in this document including, but not limited to, the benefits, design, pricing, components, performance, availability, and capabilities of the product are subject to change without notice or obligation. 

  • Coinmanmat

    This is the display that SHOULD have been in the standard Galaxy S5

    • http://twitter.com/jdrch jdrch

      Only if Snapdragon 805s were available at launch, which they weren’t. If you read the reviews of the LG G3 you’ll see that WQHD is actually a significant drag on performance and battery life with the 801 CPU.

      • Coinmanmat

        Then Samsung SHOULD have waited to release the Galaxy S5.

        • http://twitter.com/jdrch jdrch

          Nope. There’s a new Galaxy S every year around the same time that has the best tech available at its release date. Without the S5, the M8 would grab all of the current generation’s sales. Also, bear in mind that no Snapdragon 805 phones are on the US market yet.

  • jpeg711

    Higher resolution is good, but, SDC & UDC, please enhance the lifetime of OLED emitters. It’s more important.

  • gt-01

    I want a Galaxy S5 ‘ADVANCED’ model please!!

    Good thing I’m still waiting for the S5′s price to drop down lol…..

  • http://youtube.com/RKHDTech Rahul Kumar

    The way you say WQHD is the best, yet your own worldwide flagship is only FHD, wow…

  • nebsif

    You and your amoled monopoly holding people like me hostage. Hope Galaxy F will be announced alongside Note 5 so I can finally upgrade.

    Honestly, a day before S5 was announced, I saw a leaked picture and instantly dismissed it as a chinese clone of S4. Pls do better. /a proud note10 2014 and s3 owner.

  • John

    Birds have fur, not hair.

  • Mark

    It’s all very well to crow about the ppi of your displays, but you know very well that sub pixels per inch is a fairer metric of comparison of your displays to your competitors. And for every 2 sub pixels you squeeze in, your competitors squeeze in 3. As a result, their displays are much clearer at the same resolution and pixel density, and don’t suffer from the same grainy colors and aliasing. It’s time to put a premium screen in the phones you charge premium prices for.