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Sharp reportedly working on a 4K (4096 x 2160) resolution smartphone display panel

Posted: , by Paul.K

Sharp reportedly working on a 4K (4096 x 2160) resolution smartphone display panel
One of the recent pop-trends amongst smartphone manufacturers is the strive towards higher resolution screens and higher pixel densities. Just 3 years ago, flagships were topping out at 720p (1280 x 720) and sporting PPI densities well above 300, though, once the larger-screen trend gained momentum, phone suppliers started looking for ways to bump the resolutions further, in order to maintain the high PPI count. In the past couple of years, we've seen a jump from HD (1280 x 720) to FHD (1920 x 1080), to this year's QHD (2560 x 1440).

Now, while half the techie community is busy scratching their heads, wondering whether such an overkill pixel density is even worth having on a ~5" screen, especially at the expense of precious battery life, OEMs are slowly, but surely, climbing aboard the QHD bandwagon, if they haven't already. Even Sony, which a couple of months ago said it doesn't think QHD is worth it even on an 8-inch screen, has been rumored to be planning to equip its next Xperia flagship with a 1440p panel.

Now, Japan-based media has pulled a whisper out of the rumor mill, claiming that Sharp is currently working on the next generation of smartphone LCD panels – the 4K (4096 x 2160) screen. The "sources" said that Sharp felt pressured to develop the pixel-dense screen, due to demand for crazy-high resolutions coming from China. The tech will be ready for mass production some time in 2016 and will be used in 5- to 6-inched displays. So, a 5.5" screen, loaded with a 4K resolution will result in a pixel density of 842 PPI!

The report also claims that Sharp is working on improving the quality of current-gen LTPS LCD panels, by employing an in-house developed method, using polycrystalline silicon (high purity, multicrystalline form of silicon), fused with the glass, which should produce a more transparent, and thus – more vibrant, dispay panel.

Lastly, the rumor claims that Sharp currently has a 600ppi phone display panel ready, which should be hitting markets in China at the start of the next fiscal year.

Well, Sharp does seem to be pretty display-oriented as of late, with the launch of the bezelless Sharp AQUOS Crystal, so at least some of these rumors are likely to be true.

How does a 2160p screen sound to you? And what do you think its marketing name would be – Octa HD?

Source: feng.com (translated) via GSMDome

68 Comments
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posted on 28 Oct 2014, 08:42 25

1. loccoc402 (Posts: 30; Member since: 07 Nov 2013)


Noooooooooo! 1080p in 5,5 inch display is quite enough for me

posted on 28 Oct 2014, 08:45 7

3. Carlitos (Posts: 500; Member since: 23 Oct 2011)


I mean, of it doesn't affect battery life, why not?
The Galaxy S5 LTE Advanced, had a QHD display, and it had an equal battery life to the regular Galaxy s5 (1080p) even though the resolution is significantly higher.
Then again most to all people would not notice the difference. The only thing I see it offering is better color reproduction.

posted on 28 Oct 2014, 08:49 14

6. NexusX (Posts: 482; Member since: 16 May 2013)


but pairing a more efficient chip with a less overkill screen would give you even better battery life, wouldn't it?

posted on 28 Oct 2014, 09:59 3

30. Taters (banned) (Posts: 6474; Member since: 28 Jan 2013)


For one generation maybe and then dismissing battery returns will happen once chips are so efficient it can run any resolution easily while sipping battery.

So why not? Having a 4k screen beats the crap out of them shrinking your battery Xperia Z3 battery size < Xperia Z2 battery size. iPad Air 2 battery size < ipad air battery size. Or even worse in Apples case. Telling you all you need is 1 gb ram, 750p, and 1810 mah battery and charge you for QHD, 5gb of ram, and 5000 mah prices. So if they are going to charge you for it regardless....

I don't give a crap if them using 2013 specs increases the battery life a bit. If I am paying for 2014 specs, I'll take 2014 specs even if the returns are minimal. Like I said, better than them pocketing it.

Now if using less than QHD lowered the price and increased battery life, I would agree with you. But as I see it now. The GS5 LTE A is the same price as a standard GS5 and the Z2 with identical specs 1080p SD801 is a lot cheaper than the Z3. Companies other than Samsung fully intend to charge you 4k prices in 2016 so why would you accept 1080p so they can pocket the price difference and hide behind the fact that they "wanted" you to have better battery life. More like like they "wanted" to pocket your money.

Take the latest tech and let them worry about making the battery life great.

posted on 29 Oct 2014, 04:24

59. iushnt (Posts: 1510; Member since: 06 Feb 2013)


That's not the case every time.,the display of note 3 consumes more power than the QHD display of note 4

posted on 28 Oct 2014, 09:11 4

12. joaolx (Posts: 364; Member since: 16 Aug 2011)


The screen itself might not affect the battery but it requires more horsepower to run all those pixels. So the issue with battery doesn't come from the screen but the CPU and GPu that have to keep up with it.

posted on 28 Oct 2014, 10:48 1

42. strudelz100 (Posts: 644; Member since: 20 Aug 2014)


Facts are dead in this house of dummies.

posted on 28 Oct 2014, 10:11

35. strudelz100 (Posts: 644; Member since: 20 Aug 2014)


But it 100% will effect battery life. More rendered pixels is more work for the SoC. Leading to less battery life. Period.

posted on 29 Oct 2014, 04:29 1

60. iushnt (Posts: 1510; Member since: 06 Feb 2013)


Have been hearing this for years, yet..as time passes by battery life and SoC power both are increasing..period..battery life is not going backwards either..

posted on 28 Oct 2014, 18:11

56. xondk (Posts: 1203; Member since: 25 Mar 2014)


If it doesn't affect battery life, then imagine how much battery life it would have with 'just' 1080p?

Very roughly 4x longer battery life with 4k vs 1080p, and since you wouldn't really be able to see the difference.......well, what do you want, imperceptible screen upgrade? or 4x longer battery lifetime?

I know what my answer is.

posted on 28 Oct 2014, 09:51

28. Duketytz (Posts: 534; Member since: 28 Nov 2013)


At least have a decent 2-3 days battery life before all these s**t...

posted on 29 Oct 2014, 04:32

61. iushnt (Posts: 1510; Member since: 06 Feb 2013)


I think u want the flip phones or other dumb phones..they have great battery life..but as consumers, smartphones should be as advanced as possible with the similar price setting..otherwise u would be having a Galaxy s2 with a week battery life..all(battery, cpu, gpu, screen, camera) should advanced collectively and not isolately..

posted on 28 Oct 2014, 11:59 4

47. sid07desai (Posts: 290; Member since: 03 May 2012)


Just give me a 5 inch screen with 8k (7680x4320) resolution with 1500 PPI. And a 10,000mAh battery and Snapdragon 2000 @ 5GHz with 16GB RAM. Oh and 80MP camera with 16K Video Recording at 500 FPS. I will pass on that phone to my great-grandchildren

posted on 29 Oct 2014, 04:34

62. iushnt (Posts: 1510; Member since: 06 Feb 2013)


Haha, what if the battery is still 4000 may and highly efficient

posted on 28 Oct 2014, 08:44 2

2. Captain_Doug (Posts: 990; Member since: 10 Feb 2012)


Higher res displays is cool as long as I can still find a 5" phone that gets decent battery life. 1080P 5" is nice. Although I could probably tell if the resolution was increased.

posted on 28 Oct 2014, 10:17

38. strudelz100 (Posts: 644; Member since: 20 Aug 2014)


What would you rather have?

More resolution you "could probably tell" or an hour more on-screen time?

posted on 28 Oct 2014, 11:17

45. Taters (banned) (Posts: 6474; Member since: 28 Jan 2013)


It should read half an hour more on screen time plus money in the manufacturers pockets or more resolution you can most likely tell and the satisfaction that they are not charging me 2k prices for a 1080p screen?

The latter each and every time and that's what any sane person should choose too unless you like getting raped by Apple like Mr strudelz here.

posted on 29 Oct 2014, 06:09

67. Captain_Doug (Posts: 990; Member since: 10 Feb 2012)


Depends. As long as I can get a full day of use, more resolution.

posted on 28 Oct 2014, 08:46 10

4. TimCook (banned) (Posts: 450; Member since: 23 Oct 2014)


A Very Sharp Display from Sharp

posted on 28 Oct 2014, 08:47 1

5. Sauce2 (banned) (Posts: 199; Member since: 21 Oct 2014)


This is good because the more 4k (and even 5k [mac]) screens there are, the faster it gets adopted and accepted and used.

posted on 28 Oct 2014, 08:53

7. jasrockett (Posts: 46; Member since: 05 Oct 2011)


Yes please in the form of a Note6 with a 6.2 inch screen and to fast tract across the board 4k adoption.

posted on 28 Oct 2014, 08:54 4

8. HugoBarraCyanogenmod (Posts: 1010; Member since: 06 Jul 2014)


I can see more eyes cancer in the future

posted on 28 Oct 2014, 09:33 5

19. g2a5b0e (Posts: 3716; Member since: 08 Jun 2012)


I can see more fail comments in your future.

posted on 28 Oct 2014, 09:00 1

9. ishan.heru (Posts: 69; Member since: 31 Aug 2014)


No SHARP plz dont do this. 2K trend has just started.

posted on 28 Oct 2014, 09:34 1

21. g2a5b0e (Posts: 3716; Member since: 08 Jun 2012)


It says 2016. That's at least 15 months away & considering that the first 2K phones came out 6 months ago, we're looking at about 2 years in between. I don't see a problem with that. Sure, 4K screens are completely unnecessary in displays of this size, but who still stop the progress of technology?

posted on 29 Oct 2014, 00:40 1

57. Twisted247 (Posts: 282; Member since: 12 Oct 2012)


Not to mention, letting technology go at the rate it is benefits the consumer is other areas as well. Look now, 4k TVs were $20,000 minimum just a few years back. Now you can get them at a grand. And a good one for around 3-5 thousand. So the mobile industry excelling at such a fast rate helps us (the consumer) out in other areas such as PC's, home entertainment, cars, safety etc. I welcome all of what the tech industry is bringing ATM. They're also creating jobs in many ways, and helping economies around the world.

posted on 28 Oct 2014, 09:00 1

10. Mrmark (Posts: 268; Member since: 26 Jan 2013)


The battery life is not all accurate as tech blogs make it seem.

posted on 28 Oct 2014, 09:01 5

11. Anshulonweb (Posts: 430; Member since: 07 Feb 2014)


the main problem is that the cpu manufactures which is basically Qualcomm for majority android phonea is not able to keep up with the display resolution..... the GPU is comparatively weak with such high resolution when compared to apple ipad air 2....

posted on 28 Oct 2014, 09:15

13. Astoni (Posts: 649; Member since: 28 Sep 2013)


Don't GO 4k.. i dont want a 4k trend..

posted on 28 Oct 2014, 09:22 5

14. xperiaDROID (banned) (Posts: 5629; Member since: 08 Mar 2013)


That's too far, to be honest.

posted on 28 Oct 2014, 09:56

29. PapaSmurf (Posts: 10435; Member since: 14 May 2012)


Too far? Did you not say anything over 1080p was pointless? Hmmmm...

posted on 28 Oct 2014, 10:16 2

37. xperiaDROID (banned) (Posts: 5629; Member since: 08 Mar 2013)


Well, I just upgraded to the Xperia Z from the Xperia P that time, so you can't blame someone that came from 540p for saying that.

Right now, I think that 1080p is already enough and 2K is the limit. 4K? Too far.

posted on 28 Oct 2014, 12:03 1

48. Reality_Check (Posts: 277; Member since: 15 Aug 2013)


I think it just makes business sense. Cram everything in there and market it as having all the latest bells and whistles. For me personally a 1080p display is enough, though I wouldn't mind a phone with QHD or even UHD if it doesn't hit battery life, as technology keeps on evolving.

posted on 29 Oct 2014, 04:40

64. iushnt (Posts: 1510; Member since: 06 Feb 2013)


Business sense makes on both by keeping these latest techs and by not keeping..in a marketing way having latest test is a way to go..but in a cost saving way(how apple does for profit margins), not having is better

posted on 29 Oct 2014, 04:38

63. iushnt (Posts: 1510; Member since: 06 Feb 2013)


Real success comes when u have a far view..if all the people in this world try to limit then perhaps we would still be using landline phones

posted on 28 Oct 2014, 09:24 3

15. uchihakurtz (Posts: 358; Member since: 12 Nov 2012)


I think screen nowadays should be measured by ppi, not resolution, 400 ppi should be enough unless you have Legolas 's eye and a bad OCD.

posted on 28 Oct 2014, 09:24 2

16. rsiders (Posts: 852; Member since: 17 Nov 2011)


This is when technology takes a step back from practicality to just numbers. Can we build better phones and stop worrying about bragging rights? At least Apple can say that and I'm no Apple fan boy.

posted on 28 Oct 2014, 10:05

34. Taters (banned) (Posts: 6474; Member since: 28 Jan 2013)


Lol Apple doesn't give you low specs for anything except increasing their profit margins. If the iPad air 2 needed 2 gb of ram than I see no reason why other IOS 8 devices don't need it. All of them run IOS the same. Apple needed and could have given you much more but profit margins first fir them.

Oh and about Apple not bragging.......rofl

posted on 28 Oct 2014, 10:45

41. strudelz100 (Posts: 644; Member since: 20 Aug 2014)


Apple refines and uses proven tech to make a consistent product. Android OEM's use experimental and unproven tech to make "innovative?" products, or swing dummies with spec flaunting; leading to an inconsistent experience.

That's why the iPad Air 2 has 2gb RAM. Future proofing the design for a multi-window in future iPad software. Using a screen that's actually big enough to multi-window effectively. Apple isn't going to throw this feature on every Apple device: Only the ones that will be able to use it effectively. This is fine for Apple, because their penchant for making devices that work effectively set them apart: Their sales do not follow the

This is why Samsung and others use more RAM: The user experience sucks with 1gb RAM when using their devices. They can't afford to skimp on RAM because it destroys user enjoyment: And consumers know a laggy device doesn't live up to the standard the iPhone sets.

The inclusion of more RAM is a cover for their poorly written software, and background data and location collection thats always going on behind the scenes with G Services.

posted on 28 Oct 2014, 11:12

44. Taters (banned) (Posts: 6474; Member since: 28 Jan 2013)


Lol puleeze. So the iPad air 2 is worth future proofing but the 6 plus isn't?

They wanted a higher profit margin on the 6 plus plain and simple. They could have added 2gb and they should have. Just like the 6 plus should have had the A8x and the iphone 6 should have had a 1080p screen.

posted on 29 Oct 2014, 04:42

65. iushnt (Posts: 1510; Member since: 06 Feb 2013)


The main reason for apple not to keep the latest and greatest available parts is profit margin..period..

posted on 28 Oct 2014, 09:26

17. Techfriend (Posts: 32; Member since: 16 Apr 2014)


Bring innovations to the battery plzz i am not seeing any pros having a 5.5 4k display on smartphones.only pros i can imagine right now is lower end smartphone with 720p display and midranger with 1080p display in 2016 (bcz of lower price) !!

posted on 28 Oct 2014, 09:31 1

18. Chuck007 (Posts: 1040; Member since: 02 Mar 2014)


Now this is just getting ridiculous..

posted on 28 Oct 2014, 09:33

20. PhoneArenaUser (Posts: 5498; Member since: 05 Aug 2011)


Good news! :)

posted on 28 Oct 2014, 09:35

22. Andrewtst (Posts: 609; Member since: 25 Jan 2009)


When gonna release 20K mobile display! I desperate need it!

posted on 29 Oct 2014, 04:44

66. iushnt (Posts: 1510; Member since: 06 Feb 2013)


Some people can't handle technology..they have to bitch about any improvements

posted on 28 Oct 2014, 09:37 1

23. Anterv (Posts: 172; Member since: 09 Jul 2014)


I will skip it, wake me up when I can buy 12K resolution phone.

posted on 28 Oct 2014, 09:41 1

24. DefinitiveKid (Posts: 215; Member since: 15 May 2013)


Well, I say bring the 4K smartphones, this way the 1080p and 1440p ones' prices are gonna drop

posted on 28 Oct 2014, 09:41

25. SIGPRO (Posts: 1376; Member since: 03 Oct 2012)


Finaly a real 4K screen not those UHD screens which they see as 4K!

posted on 28 Oct 2014, 09:43 2

26. fzacek (Posts: 2486; Member since: 26 Jan 2014)


I'm doing just fine with a 720p display, so I think this is definitely a complete waste of power and battery...

posted on 28 Oct 2014, 10:01 1

31. Taters (banned) (Posts: 6474; Member since: 28 Jan 2013)


I thought you said 720 was unacceptable somewhere? Haha

posted on 28 Oct 2014, 12:57

50. fzacek (Posts: 2486; Member since: 26 Jan 2014)


Yes, it's unacceptable on a flagship-priced phone, especially if it uses a Pentile-matrix, but otherwise it is perfectly usable. My point is that 1080p is plenty enough for flagship-priced devices, and even 2K is overkill...

posted on 28 Oct 2014, 09:50 1

27. AnukulVcool (unregistered)


In plain words : its just a gimmick

posted on 28 Oct 2014, 10:03

32. Ghost04 (Posts: 329; Member since: 03 May 2014)


I will not look at my smartphone using a Microscope . So , I don't care .
And besides even 2K display phones can't give long battery back up .
I don't want my phone yo get out of charge in 7-8 hrs .
4K is acceptable in 8-12 inch tablets , but not in smartphones right now .

posted on 28 Oct 2014, 10:03

33. aesthetics (Posts: 128; Member since: 02 Oct 2014)


100% useless. Gimmick as QHD

posted on 28 Oct 2014, 10:15 1

36. ncallan (Posts: 33; Member since: 15 Mar 2013)


Top end desktop graphics chips struggle with 4k. What chance does a phone have? I'm all for the never ending march of technological progress but eventually there comes a time when we've reached a pinnacle. For me that was 1080p. R&D should now turn to energy efficiency, contrast and colour reproduction.

posted on 28 Oct 2014, 10:20

39. pwnarena (Posts: 1129; Member since: 15 Feb 2013)


stupidity at its sharpest

posted on 28 Oct 2014, 10:24

40. cGmC11 (Posts: 136; Member since: 02 Apr 2012)


Yeahhhhhh!!!...8" screen phablets it's coming

posted on 28 Oct 2014, 11:01

43. ThePython (Posts: 871; Member since: 08 May 2013)


Frustrating.

posted on 28 Oct 2014, 11:45

46. Oğuzhan_77 (Posts: 82; Member since: 18 Nov 2013)


İ think first 4k phone is vivo xplay 3s succersor wiht sdg810 and 4 gb ram

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