Universal Display Corporation

The Galaxy S4 has a 4.99" Full-HD (1920x1080, 441 PPI) Super AMOLED display behind a Corning Gorilla Glass 3.

Universal Display reported that Samsung Display Corporation (SDC) adopted UDC's green PHOLED (host and emitter) in the 5" Full-HD Super AMOLED display used in the Galaxy S4 smartphone. This is a significant development as the green PHOLED increases energy efficiency of displays by up to 25%

Nokia's Lumia 1020 smartphone and BlackBerry's Q10 and Z30 models have OLED screens.

In October 2013, Samsung released the first ever curved display smartphone called the Galaxy Round. Samsung also introduced the "Roll Effect" where when the phone's screen is off and is rolled, it displays basic information like time or battery percentage. While it is possible to curve LCD screens, analysts say OLED screens provide better technical benefits.

Samsung introduced the Galaxy Round in the Korean market in October 2013. The device features a 1080p screen, measuring 5.7 inches (14 cm), that curves on the vertical axis in a rounded case.

The Galaxy S5, launched in Feb 2014, has a 5-inch Super AMOLED screen.

Smart watches

In September 2013 Samsung unveiled their Galaxy Gear Smartwatch having a 1.6 inch OLED screen and multiple apps to link the watch to an Android smartphone. It originally went on sale in the US in October 2013 for $299 and featured a 1.63" 320x320 (275 PPI) Super AMOLED display.

The LG G Watch R is smartwatch featuring a circular face and an OLED screen.

LG has released a second premium smart watch called the "Urbane" which retails for $590.

OLED displays are expected to dominate the smart watch market with 58% market share.

Apple began using OLED panels in its watches in 2015 and all subsequent watches.

Tablets

Panasonic has showcased a 20-inch OLED screened tablet with a resolution of 4K (3840×2160 pixels).

Samsung has released two Galaxy Tablets using OLED technology. The Galaxy Tab S 10.5 was released with Android 4.4.2 Kitkat.

The Galaxy Tab S 10.5 has a 10.5-inch WQXGA Super AMOLED screen with a resolution of 2560x1600 pixels and a pixel density of 287 ppi.

The Galaxy Tab S 8.4 has an 8.4-inch Full HD Super AMOLED screen with a resolution of 2560x1600 pixels and a pixel density of 359 ppi.

Televisions

Samsung and LG-Display showed 55-inch OLED-Television devices at CES-2012. But both companies had to delay their mass production. Also AUO, Sony and Epson will start AMOLED-TV production in 2014.

In June 2013 Samsung announced the Korean availability of a 55-inch curved OLED HDTV. Priced at 15 million Korean won (around $13,500). Samsung also reiterates the claim LG made when it launched its own curved OLED model that "keeping all parts of the screen an equal distance from the viewer makes for a better viewing experience." By August 2013, Samsung dropped the price of the OLED television by 30% claiming "better yields" in manufacturing.

In September 2013 at the IFA electronics show, Samsung unveiled their 98-inch 4K AMOLED television.

LG showcased an Ultra High Definition (UHD) curved 77inch screen at the IFA electronics show. This is a 4K WRGB OLED screen. In October 2014, LG reported that their Television sales has jumped 20x in volume shipments since 2013.

CNET reviewed the LG 55EC9300 OLED Television in September 2014 and called it "The best. Picture. Ever." Combining the best qualities of LED and Plasma without the disadvantages.

With the arrival of Quantum Dot LCD displays, LG released an article describing why they still see OLED as the future of Television displays: "In fact, OLED technology is the technology that is so much advanced that it should not be compared to an LCD based QD. Hence, even though LG already has the technology to create QD backlighting, it is focusing on developing OLED".

In January 2015, LG Display signed a long-term agreement with UDC for the supply of OLED materials and the right to use their patented OLED emitters. LG is the leader in the push for OLED Televisions.

In 2017, LG revealed five new models of OLED TVs, the flagship model being as thin as 0.9mm.

Technological advantages of OLED

The different manufacturing process of OLEDs lends itself to several advantages over flat panel displays made with current LCD technology.

Lower cost in the futureOLEDs can be printed onto any suitable substrate by an inkjet printer or even by screen printing, theoretically making them cheaper to produce than LCD or plasma displays. However, fabrication of the OLED substrate is more costly than that of a TFT LCD, until mass production methods lower cost through scalability. Roll-to-roll vapour-deposition methods for organic devices do allow mass production of thousands of devices per minute for minimal cost, although this technique also induces problems in that devices with multiple layers can be challenging to make because of registration, lining up the different printed layers to the required degree of accuracy.

Lightweight and flexible plastic substratesOLED displays can be fabricated on flexible plastic substrates leading to the possible fabrication of flexible organic light-emitting diodes for other new applications, such as roll-up displays embedded in fabrics or clothing. As the substrate used can be flexible such as polyethylene terephthalate (PET), the displays may be produced inexpensively.

Wider viewing angles and improved brightnessOLEDs can enable a greater artificial contrast ratio (both dynamic range and static, measured in purely dark conditions) and a wider viewing angle compared to LCDs because OLED pixels emit light directly. OLED pixel colors appear correct and unshifted, even as the viewing angle approaches 90° from normal.

Better power efficiency and thicknessLCDs filter the light emitted from a backlight, allowing a small fraction of light through. So, they cannot show true black. However, an inactive OLED element does not produce light or consume power, thus allowing true blacks. Dismissing the backlight also makes OLEDs lighter because some substrates are not needed. This allows electronics potentially to be manufactured more cheaply, but, first, a larger production scale is needed, because OLEDs still somewhat are niche products. When looking at top-emitting OLEDs, thickness also plays a role when talking about index match layers (IMLs). Emission intensity is enhanced when the IML thickness is 1.3–2.5 nm. The refractive value and the matching of the optical IMLs property, including the device structure parameters, also enhance the emission intensity at these thicknesses.

Response timeOLEDs also can have a faster response time than standard LCD screens. Whereas LCD displays are capable of between 1 and 16 ms response time offering a refresh rate of 60 to 480 Hz, an OLED theoretically can have a response time less than 0.01 ms, enabling a refresh rate up to 100,000 Hz. OLEDs also can be run as a flicker display, similar to a CRT, in order to eliminate the sample-and-hold effect that creates motion blur on OLEDs.

Some disadvantages include:

Power consumptionWhile an OLED will consume around 40% of the power of an LCD displaying an image that is primarily black, for the majority of images it will consume 60–80% of the power of an LCD. However, an OLED can use more than three times as much power to display an image with a white background, such as a document or web site. This can lead to reduced battery life in mobile devices, when white backgrounds are used.

According to OLED Display "Samsung Display uses different Sub Pixel Matrix technologies for their smartphone Super-Amoled Displays. For the Galaxy S4 and S5 they use the Diamond Pixel Matrix."