PPI - Page 10

Visionox developed a new high-density (604 PPI) AMOLED panel. The new 2560x1440 prototype is 4.85" in size and was deposited using FMM / VTE. It uses Visionox's Z-Type AMOLED RGB sub-pixel arrangement first demonstrated in 2014.

Visionox recently started to mass produce the company's first AMOLED panel, a 5.5" display aimed towards the mid/high smartphone market. Visionox's Gen-5.5 AMOLED line can currently produce 4,000 monthly substrate, and once yields stabilize they will reach a full capacity of 15,000 monthly substrates.

During a trade show in Beijing, Everdisplay (EDO) demonstrated the company's first transparent OLED, a 5.57" panel as you can see below. The panel features a pixel density of 264 PPI and the transmittance seems to be 40%.

Everdisplay recently also unveiled a 5.6" WQHD (2560x1440, 525 PPI) flexible OLED prototype. Everdisplay started mass producing 5" 720p AMOLED displays towards the end of 2014. Since then the company seems to be accelerating its OLED program, and besides the new transparent and flexible prototypes, we know it is developing larger displays (5.5", 6" and an 8" AMOLED for the automobile market), round AMOLEDs (a 1.4" 400x400 circular AMOLED for the wearable market) and high density (734 PPI) AMOLEDs.

Everdisplay (EDO) unveiled a 5.6" WQHD (2560x1440, 525 PPI) flexible AMOLED prototype. This impressive display is the first flexible OLED prototype by the Chinese OLED maker. EDO says that flexible OLEDs are set to become the display of choice for top-tier brands.

Everdisplay started mass producing 5" 720p AMOLED displays towards the end of 2014. Since then the company seems to be accelerating its OLED program. The company is developing larger displays (5.5", 6" and an 8" AMOLED for the automobile market), round AMOLEDs (a 1.4" 400x400 circular AMOLED for the wearable market) and also recently demonstrated a 6" 4K (734 PPI) AMOLED display.

A few days ago AU Optronics announced that it will unveil a new 5" bendable AMOLED prototype with an integrated touch sensor, and today we have more details and a photo of this interesting AUO prototype.

The new panel is a 5" 720p (295 PPI) AMOLED display on an LTPS backplane. The frontplane is a top-emission AMOLED and the substrate is a plastic film, encapsulated using a thin-film barrier film. The whole panel, including the "film-type" touch sensor, is 0.2 mm thick.

Professor Bjorn Lussem from Kent State University received a $180,000 grant from the Binational Science Foundation to continue his development of an OLED display that is driven by a vertical organic transistor.

Professor Lussem explains that vertical transistors use less voltage so they are more power efficient. A vertical design also means you can make higher density displays. Professor Lussem's partner in this reserach is Professor Nir tessler from Israel's Technion institute for technology.

Everdisplay developed a 6" 4K AMOLED display - achieving 734 PPI. This is the first 4K 6" AMOLED prototype to be demonstrated. Everdisplay says that emerging applications such as virtual reality will demand such high-resolution displays.

Everdisplay started mass producing 5" 720p AMOLED displays towards the end of 2014. The company is also developing 5.5" and 6" panels for mobile devices, a 1.4" 400x400 circular AMOLED for the wearable market and an 8" AMOLED for the automobile market.

Samsung today announced two new AMOLED tablets, the Galaxy Tab S2 9.7-inch and Galaxy Tab S2 8-inch. Both tablets adopt QXGA (2048x1536) Super AMOLED displays (263 PPI on the 9.7" and 320 PPI on the 8").

Those AMOLED displays are actually of lower density than those used in the first-gen Tab S tablets (which were WQXGA, or 2560x1600 or 287/359 PPI). Samsung however says that the Tab S2 OLEDs are "newly optimized" and deliver 94% of the Adobe RGB standard for true-to-life colors. The new aspect ratio (the tablets are not as wide as the Tab S ones) is better for reading, too.

Samsung Display announced it launched a new project (called EnDK) to develop the world's first 11K mobile display, that will achieve 2250 PPI(!). The Korean government will support this five-year project with a $26.5 million grant. Samsung is collaborating with 13 companies on this project, and they expect to show the first prototype by the 2018 Pyeongchang Winter Olympics.

This seems crazy at first for a mobile device - after all the human eye cannot physically distinguish a higher than 2K resolution in a mobile phone. But Samsung explains that this "super dimension" display will enable an "optical illusion" that will enable 3D images.

Back in 2013, Fujifilm and imec jointly developed a new process to deposit and pattern OLED materials using existing i-line photolithography equipment. The two companies have now demonstrated a full-color photoresist OLED. They say that this could lead to a new process that can be used to produce high-resolution large-area OLED displays in a cost-effective way.

In the new prototype, the two companies patterned red, green and blue OLED materials to create a subpixel pitch of 20 micrometer. The full device is 40x40 pixels and achieved a density of 640 PPI. As you can see in the image above, UV rays were used to confirm the result.

While we confirmed Apple's Watch uses a flexible AMOLED display back in September 2014, now we are set to get some more confirmations as Apple starts shipping their first wearable device. iFixit posted a tear-down of the Watch, in which they confirm it is an AMOLED panel.

iFixit also finally details the Watch display resolution: the small editions use a 38mm display (272x340, 290 PPI) while the larger Watches use a 42 mm panel (312x390, 302 PPI). Those are flexible OLED panels produced by LG Display.