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Diamond Pixel: the unique GS4 sub pixel arrangement

April 28, 2013, 10:53 am
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When Samsung launched the GS4, they said the Super AMOLED display uses PenTile. Back in January, it was reported that Samsung will adopt a new subpixel scheme that uses diamond sub-pixels, but up until now we didn't hear anything official from Samsung. Today the company finally did acknowledge the new design, and published two closeup photos of the GS4 display.

Diamond Pixel architecture

Diamond Pixel, as Samsung's calls their new design, is a PenTile subpixel scheme, in which there are twice as many green subpixels as there are blue and red ones. The green subpixels are oval and small while the red and blue ones are diamond-shaped and larger (the blue subpixel is slightly larger than the red one). DisplayMate says that this is because green is the most efficient (and long lasting) OLED emitter while the blue has the shortest lifetime.

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Samsung's KN55S9C sub-pixel design

September 1, 2013, 3:50 am
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French site Lesnumeriques posted an article on Samsung's KN55S9C curved OLED TV, in which they include a macro-photo showing the TV's sub pixels up close:

As you can see, the blue subpixels are bigger than the red and green ones (about twice as large). This was designed this way because the blue OLED has the lowest lifetime - if it is bigger then you can lower the brightness and so conserve lifetime. We've seen many OLED displays with differently-sized subpixels - including PenTile ones and the rather unique display used in the Note 2.

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Speculation on the Galaxy Note 3 sub-pixel arrangement

September 10, 2013, 4:47 am
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When Samsung unveiled the Galaxy Note 3 they said it's got a 5.7" Full-HD Super AMOLED display (386 PPI) - but they didn't reveal what is the sub-pixel arrangement. Some sites say it is a Pentile display while other say it not.

Galaxy Note 3 display up closeGalaxy Note 3 display up close

According to Chinese site RBMen, the Note 3 uses a Diamond Pixel architecture - similarly to the Galaxy S4. Diamond Pixel is indeed a PenTile subpixel scheme, and there are twice as many green subpixels as there are blue and red ones. The green subpixels are oval and small while the red and blue ones are diamond-shaped and larger. So perhaps both reports are right: it is indeed a PenTile display, but not a regular one...

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DisplayMate: the Galaxy Note 3 has the best performing OLED display ever, beats LCDs across the board

October 1, 2013, 5:59 am
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DisplayMate, the display testing, measurement and calibration experts just got their hands on a pre-release Galaxy Note 3 production unit, with its 5.7" Full-HD Super AMOLED display (386 PPI, PenTile). They put the unit to extensive testing (and also compared it to the Note 2). The conclusion? This is the best performing OLED display ever and it beats LCDs across the board!

The most notable advancement in this new panel is the high brightness. It can achieve 660 cd/m2 in high ambient light. It's not just 55% brighter than the Note 2, it's actually the brightest display ever tested at DisplayMate. A very notable achievement for Samsung's OLEDs, which were lagging behind LCDs in brightness.

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Will Oculus Rift adopt an OLED display for their consumer HMD?

November 14, 2013, 3:01 am
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The Oculus Rift is a VR HMD being developed by Oculus VR. The high profile company raised $16 million (partly by crowdfunding) and already offer "development kits" HMDs. Their consumer version (Oculus CV) will hopefully be released in 2014 and will feature improved components, for example a Full-HD display. The current versions use LCD displays (7" in size, although early prototypes used 5.6").

Oculus VR development editionOculus VR development edition

Yesterday, at Oculus' development forums, a new discussion suggests that Oculus aims to adopt an OLED display in the Oculus CV. They quote Oculus CEO Brandon Iribe as saying that the need a much faster display than the current one, and that OLED was the technology that could achieve that.

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Visionox's new Z-Type AMOLED RGB sub-pixel arrangement reaches 570 PPI

April 21, 2014, 6:24 am
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Visionox developed a new RGB pixel arrangement for OLED technologies that allowed them to reach 570 PPI. The company refers to this new technology as Z-Type arrangement and it includes 3 sub-pixels (RGB) per pixel (unlike Samsung's Pentile displays). The sub-pixels are densely packed (the aperture ratio seems very high) in a way that does not suffer from jagged edges.

Visionox told me that they cannot yet say when such displays can be commercialized, as there are still manufacturing challenges to overcome. In the meanwhile the company applied for both Chinese and international patents.

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The GS5 Diamond Pixel architecture is not the same as the GS4

April 25, 2014, 6:31 am
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When Samsung first released the GS5, we thought the 5.1" FHD Super AMOLED display is pretty similar to the 4.99" FHD one used in the GS4. But DisplayMate found out that this is a much superior display in many aspects, one of them being that it is 27% more efficient.

The GS5 new Diamond Pixel subpixels photoGS5 subpixelsDiamond Pixel architectureGS4 subpixels

Samsung told DisplayMate that the improvement mostly came from more efficient OLED materials. They also incorporated new display electronics and optics and that helped as well. But now Chipworks posted a teardown of the GS5, and they published a macro image of the display's sub pixels. It turns out that it's a different architecture than the GS4, and this may explains some of the performance boost, too.

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DisplayMate: the OLED displays in Samsung's new tablets are the best tablet displays ever tested

June 24, 2014, 10:25 am
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DisplayMate posted yet another interesting display shoot-out, this one testing Samsung's new QHD (2560x1600) Super AMOLED displays used in the upcoming Galaxy Tab S (8.4 and 10.5) tablets. As these displays are very similar to the GS5 display, it's not surprising that DisplayMate found those tablets to offer the best performing displays ever. This is yet another testimony to how great OLED displays are - and the rate of improvement in OLEDs is very rapid.

As DisplayMate found out, the Galaxy Tab S establishes new records for best Tablet display performance in: Highest Color Accuracy, Infinite Contrast Ratio, Lowest Screen Reflectance, and smallest Brightness Variation with Viewing Angle. These are also the highest resolution tablets at QHD.

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Tianma shows a 5.5" Full-HD AMOLED prototype

April 15, 2015, 4:37 am
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The OLED Association reports that Shanghai Tianma demonstrated a new 5.5" Full-HD (400 PPI) AMOLED prototype. This is the highest-resolution display ever shown by the Chinese display maker, and reportedly they have adopted a subpixel scheme not unlike Samsung's Pentile technology. To achieve the high resolution, Tianma developed a dual-FMM technology in-house.

Tianma 5.5'' FHD AMOLED prototype photo

Tianma has been developing LTPS AMOLED technology for quite a while, and according to our information they are getting ready to release the first panels in 2016. Tianma has plans for three separate OLED production lines.

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eMagin reports their financial results for Q3 2015, updates on direct-emission displays and AR/VR efforts

November 12, 2015, 11:40 pm
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eMagin, the OLED microdisplay maker, reported their financial results for Q3 2015. Revenues were $5.4 million - down from $7 million in Q2 2015 due to a decrease in both product sales and R&D contract revenue. Net loss was $2.2 million, and eMagin currently has $5.1 million in cash and equivalents.

eMagin SXGA OLED-XL microdisplay photoAn eMagin OLED microdisplay

eMagin decreased its revenue guidance for 2015 and now anticipates annual revenues of $24 million or above. A couple of months ago eMagin has entered into an agreement with Craig-Hallum Capital Group that will allow them to raise up to $4.5 million.

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SDC developed a 806 PPI OLED display for VR applications

June 5, 2016, 11:36 pm
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Samsung Display developed a new high-resolution OLED display, specifically for VR applications. The 5.5" panel, on display at SID DisplayWeek, sported a 3840x2160 resolution - or 806 PPI. The panel offered a brightness of 350 nits and a color gamut of 97% adobe RGB.

SDC 806 PPI VR OLED at SID 2016

This is the highest resolution mobile phone sized OLED ever demonstrated, and it exactly matches the highest resolution LCD - Sharp's 5.5" 806 PPI IGZO panel unveiled in 2015. Samsung's display probably uses some sort of PenTile architecture, though, so actual sub-pixel count is smaller.

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Red Gate: is there a problem with Samsung's latest OLED panels?

April 19, 2017, 6:27 am
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Samsung started shipping its Galaxy S8 and Galaxy S8+ phones in Korea, and some of the first customers are complaining that the display have a reddish tint - which did not go away even after correcting the color display settings. This issues was quickly labeled as "Red Gate"... will Samsung face a new crisis?

Red tinted Samsung Galaxy S8 (Yonhap image)

Samsung itself says that there are no quality issues - and that the problem can be adjusted. Customers are welcome to replace their device, though, at service centers in Korea.

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The iPhone X has a different diamond pixel structure than Samsung's Galaxy displays

November 8, 2017, 11:04 pm
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Samsung introduced the Diamond Pixel display architecture back in 2013 when it launched the Galaxy S4 smartphone, and since then it has adopted this sub-pixel scheme in all of its OLED displays (replacing the previous PenTile scheme).

Galaxy (right) vs iPhone X (left) Diamond Pixel structure

The 2014 Galaxy S5 introduced a different Diamond Pixel scheme which Samsung uses till today. DisplayMate tested the Apple iPhone X and it turns out that Apple's OLED, even though it is produced by Samsung Display, uses a slightly different Diamond Pixels - the fill factor of Apple's display is higher than in the Galaxy phones. You can see the two different displays in the macro photos above (courtesy of Display Mate). The iPhone X OLED is on the left, while the right shows the Galaxy OLED.

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Tianma demonstrates its latest foldable, flexible and rigid AMOLEDs at SID 2018

June 5, 2018, 11:23 pm
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Tianme had an large booth in SID, showcasing many display technologies and demonstrating its latest LCD and OLED panels. Tianma started producing rigid and flexible OLEDS in April 2017 at the company's 6-Gen fab in Wuhan, and at SID the company demonstrated its 5.5" on-cell rigid AMOLEDs now in production. Tianma told us that this display was adopted in smartphones by Lenovo and Asus.

Tianma also demonstrated several flexible OLEDs in many configurations which we will list below. Almost all of the panels were based on the same basic display - a flexible 5.99" WQHD 1440x2280 (537.5 PPI) AMOLED produced on a polyimide substrate. Tianma showed this panel in a regular design, and also in a notch-type design.

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A macro photo of the Nintendo Switch OLED shows it is not a Pentile display

October 10, 2021, 12:11 am
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A few days ago Nintendo started shipping its anticipated Switch OLED gaming console, with its 7-inch 1280x720 OLED display. The console costs $349.99, and initial reviews find the display to be an excellent improvement over the LCD used in the previous model.

Nintendo Switch OLED macro photo

This is an interesting sub-pixel structure, quite similar to the one used by the Apple Watch - and also to Samsung's S-Stripe displays (for example the one used in the Galaxy Note II). This is not Samsung's standard architecture for mobile devices, the Pentile display (or Diamond Pixel structure).

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Samsung launches three new AMOLED phones, the A33, A53 and the A73

March 17, 2022, 11:44 pm
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Samsung announced three new Samsung Galaxy phones, in its popular mid-range A-series. First up is the Galaxy A33 which features a 6.4" 90Hz 1080x2400 Super AMOLED display, and the second is the Galaxy A53 which features a larger 6.5" 120Hz 1080x2400 Super AMOLED display.

Samsung Galaxy A33 photo

Most interesting is the Galaxy A73,which sports a 6.7" 120Hz 1080x2400 Super AMOLED+. It is not clear what Samsung refers to as a Super AMOLED+, it could be a non-pentile display like the old Super AMOLED Plus displays.

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The GS5 Diamond Pixel architecture is not the same as the GS4

April 25, 2014, 6:31 am
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When Samsung first released the GS5, we thought the 5.1" FHD Super AMOLED display is pretty similar to the 4.99" FHD one used in the GS4. But DisplayMate found out that this is a much superior display in many aspects, one of them being that it is 27% more efficient.

The GS5 new Diamond Pixel subpixels photoGS5 subpixelsDiamond Pixel architectureGS4 subpixels

Samsung told DisplayMate that the improvement mostly came from more efficient OLED materials. They also incorporated new display electronics and optics and that helped as well. But now Chipworks posted a teardown of the GS5, and they published a macro image of the display's sub pixels. It turns out that it's a different architecture than the GS4, and this may explains some of the performance boost, too.

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DisplayMate: the OLED displays in Samsung's new tablets are the best tablet displays ever tested

June 24, 2014, 10:25 am
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DisplayMate posted yet another interesting display shoot-out, this one testing Samsung's new QHD (2560x1600) Super AMOLED displays used in the upcoming Galaxy Tab S (8.4 and 10.5) tablets. As these displays are very similar to the GS5 display, it's not surprising that DisplayMate found those tablets to offer the best performing displays ever. This is yet another testimony to how great OLED displays are - and the rate of improvement in OLEDs is very rapid.


As DisplayMate found out, the Galaxy Tab S establishes new records for best Tablet display performance in: Highest Color Accuracy, Infinite Contrast Ratio, Lowest Screen Reflectance, and smallest Brightness Variation with Viewing Angle. These are also the highest resolution tablets at QHD.


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Tianma shows a 5.5" Full-HD AMOLED prototype

April 15, 2015, 4:37 am
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The OLED Association reports that Shanghai Tianma demonstrated a new 5.5" Full-HD (400 PPI) AMOLED prototype. This is the highest-resolution display ever shown by the Chinese display maker, and reportedly they have adopted a subpixel scheme not unlike Samsung's Pentile technology. To achieve the high resolution, Tianma developed a dual-FMM technology in-house.

Tianma 5.5'' FHD AMOLED prototype photo

Tianma has been developing LTPS AMOLED technology for quite a while, and according to our information they are getting ready to release the first panels in 2016. Tianma has plans for three separate OLED production lines.

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eMagin reports their financial results for Q3 2015, updates on direct-emission displays and AR/VR efforts

November 12, 2015, 11:40 pm
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eMagin, the OLED microdisplay maker, reported their financial results for Q3 2015. Revenues were $5.4 million - down from $7 million in Q2 2015 due to a decrease in both product sales and R&D contract revenue. Net loss was $2.2 million, and eMagin currently has $5.1 million in cash and equivalents.

An eMagin OLED microdisplayAn eMagin OLED microdisplay

eMagin decreased its revenue guidance for 2015 and now anticipates annual revenues of $24 million or above. A couple of months ago eMagin has entered into an agreement with Craig-Hallum Capital Group that will allow them to raise up to $4.5 million.

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