Japan Display Inc announces shipment of 5.5" WQHD displays starting in April

Japan Display Inc. has announced that it is ready to begin volume production of WQHD (Wide Quad HD) products and will begin shipping 5.5-inch WQHD TFT LCD modules starting in April. Japan Display Inc. is a joint venture between Sony, Toshiba, and Hitachi that develops, designs, produces, and sells small to medium size displays. The new WQHD display will have a resolution of 2560 x 1440 and 538 ppi. Japan Display's WQHD display will also utilize enhanced low-temperature poly-silicon (LTPS) technology. This will improve the pixel aperture ratio to achieve high transmittance with low power consumption. The panel will also have the same thinness and compactness of a conventional Full-HD TFT display.

JDI WQHD specifications:

  • Screen size (diagonal) 5.46-inch (13.87cm) 
  • Number of pixels 1440(x RGB) x 2560 (WQHD)
  • Resolution density 538 ppi
  • Dimensions 70.94 mm (W) x 128.26 mm(H) x 1.35mm (D)
  • Dead-band Top 1.0 mm, side 1.0mm, bottom 5.4 mm
  • NTSC ratio 70 %
  • Contrast ratio 1000:1 (Typ.)
  • Viewing angle >160 degree (CR>100:1)
  • Surface luminance 450 cd/m2 (Typ.)

Japan Display Inc. has been known to supply displays for Apple in previous devices. This display size and specifications line up pretty well in regards to the latest rumors of Apple creating a larger sized iPhone. This display could be the next Retina Display in the an upcoming iPhone. 

Source: Japan Display Inc.Image via Japan Display Inc.

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21 Comments

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I feel the same, don't mind having better res on phones, but what about everything else. Not just Desktop Screens either, its really difficult to find a fullHD Roof mount Car media player or headrest mount screens.

This is a bit of a joke. I'd rather not stress the CPU, GPU, and RAM even more. 1080p is enough, I'd rather have other improvements such as better battery life! They make the SoC more power efficient but then they make it work harder to drive displays like this which won't have a visible benefit.

I'd have thought if Apple were going to continue having custom screens built for them they'd simply pixel double again from 1156x640 to 2312x1280. But the aspect ratio is the same so maybe they feel more confident in the scaling abilities of iOS8...

This is probably the best bet if they want to release a larger iPhone and compete with the rest of the industry in screen specs though.

As for the 320ppi comment, not actually true. It's dependant on distance to the eyes as to what is perceived. My Lumia 920 has 330ppi and looks great but I can clearly see a difference when playing with a HTC One, which has 440ppi even when held at normal distance, never mind close up.

I don't mind the better screens on phones but it does annoy me that it's near impossible to get a decent sized monitor (24"+) with even WQHD, let alone anything higher like we're seeing in tablets and some laptops. The 27" WQHD monitors that are available are still a lowly 108ppi and cost the Earth.

Actually that is not true and is close to around 900 ppi but they determine what the ppi should be by the screen size and how far the screen will be from the users eyes.

What's the point of ever increasing display resolution (apart from the need for greater graphics chip) if times when naked eye could tell the difference are long gone?

Who knows. It's getting to the point where specs are getting so ridiculous and people are buying these phones based on them even though it makes crap all difference. Perfect example are Samsung Note tablets which have dual quad-core processors and the damn thing is STILL laggy.

I don't understand why they're increasing the resolution to these levels on small screens and not doing as much for regular PC monitors.

Mabye because Android can scale screen elements, while increasing Windows resolution over 1080p with less than 23 inch screen will make your eyes bleed. Can't get people buying 12 inch laptop with fullHD display.

You must be scaling things wrong or using old garbage applications. Anything correctly developed will scale wonderfully on Windows.

Enron said,
You must be scaling things wrong or using old garbage applications. Anything correctly developed will scale wonderfully on Windows.

Unfortunately even many popular desktop programs don't scale correctly. Adobe software especially.

mrp04 said,

Unfortunately even many popular desktop programs don't scale correctly. Adobe software especially.

Well that's Adobe, among the slowest developers on earth and always ignoring design guidelines for the OS they're creating software for.

Enron said,
I don't understand why they're increasing the resolution to these levels on small screens and not doing as much for regular PC monitors.

They are. You can get 4k monitors now. Kind of absurd that you can buy a monitor for like $2000 but a cell phone only costs $500-700, or $0-200 on a contract. Also, if they can make screens that small with that high of a resolution I don't understand why we don't have monitors with higher than 4k resolution already. But whatever, I'm sure it looks really, really pretty for a 5.5" display.

Darrian said,

They are. You can get 4k monitors now. Kind of absurd that you can buy a monitor for like $2000 but a cell phone only costs $500-700, or $0-200 on a contract. Also, if they can make screens that small with that high of a resolution I don't understand why we don't have monitors with higher than 4k resolution already. But whatever, I'm sure it looks really, really pretty for a 5.5" display.

Higher density means a higher probability for a defect. It costs the manufacture a lot less if they need to discard a 5.5" screen than a 30" screen.

Be that as it may, higher resolution monitors should be readily available, even if they cost a premium. They don't have to be 30"; I think most people would be fine with 22".