Sharp Aims 5-Inch, 443 PPI 1920x1080 Pixel Displays at Smartphone Market
October 1, 2012 11:14 AM
comment(s) - last by
New display will vie with LG, Samsung, and others for dominance
While Samsung Electronics Comp., Ltd. (
the thriving smartphone commodity display market, a number of Asian rivals are aiming to unseat the South Korean giant. Among them is Japan's Sharp Corp. (
this week that it would be mass-producing a monstrous 443 ppi (pixels-per-inch) 1920x1080 pixel smartphone screen. The 5-inch screen could appear in devices as early as the holiday season, but will likely show up in greater quantities next year. The new display features a brand new pixel technology dubbed CG-Silicon, which Sharp promises brings smartphone displays in line with their full-size counterparts. Sharp's display likely makes use of the company's new "Igzo" power efficient thin-display tech, as well.
The release marks the latest round in a game of brinksmanship by Japan and South Korea's top display makers. Early this year South Korea's LG Electronics Inc. (
) announced production of a
similar 5-inch 440 ppi unit
, which will likely launch in a similar window. LG calls its display technology "Retina" displays.
Sharp is thinking small with its latest 5-inch 1080 display. [Image Source: IntoMobile]
Sharp is reportedly looking to displace LG in Apple, Inc.'s (
) coveted iPhone, using a slightly smaller display unit. The company announced in August that it would be
shipping displays for the iPhone 5
announced similar shipments
, indicating that Apple would split its demand between the two manufacturers.
A third player is Japan's Toshiba Corp. (
a 498 ppi 6-inch display. Toshiba's display could be the most impressive of the bunch -- unfortunately it's not yet quite ready for the market.
This article is over a month old, voting and posting comments is disabled
10/1/2012 8:29:41 PM
Screen size is irrelevant. What's important is the angular separation between pixels. This is purely a function of DPI and distance from the eye to the screen. Screen size never factors into it.
150-200 DPI is a good target for screens viewed from about 2-3 feet away. 20/20 vision is the ability to distinguish two lines one arc-minute apart, or half an arc-minute per pixel (two black lines need a white line in between). So viewed at 36" the smallest distinguishable pixel is:
36" * tan(1/120 degrees) = 0.005236 inches, or 190.9 DPI. Any higher DPI than this is pointless at 36" inches - you can't see the difference with 20/20 vision.
If you squint at your phone from 12 inches away, this increases to 573 DPI. If you sit at a table with your big monitor 4 feet away, this drops to 143 DPI. Do note that this is for the very threshold of seeing - as in have to stare at it for a while to say for sure there are two lines and not one. In practical terms, moderately lower DPI is sufficient.
Along the same token, a TV viewed from 10 feet away only needs 57 DPI for 20/20 vision. For 1080p, that's a 39" screen. Similarly, a 4k screen (4096x2160) viewed from 10 feet would need to be 81" diagonal for you to just barely benefit from the resolution. For this reason I'm very skeptical of the market for 4k displays outside of theaters, work monitors, and for videophiles creating a cult over imperceptible improvements similar to audiophiles.
10/1/2012 8:45:53 PM
^^^ Exactly this. As many people here have been saying, the need for higher pixel density is partly the product of viewing distance.
"Game reviewers fought each other to write the most glowing coverage possible for the powerhouse Sony, MS systems. Reviewers flipped coins to see who would review the Nintendo Wii. The losers got stuck with the job." -- Andy Marken
LG's New Dual-Function Display Tech Hit Mass Production, Headed for iPhone
August 23, 2012, 12:31 PM
Sharp Confirms iPhone Screen Shipment for This Month, Posts Quarterly Loss
August 2, 2012, 12:45 PM
LG Looks to Leave Apple Behind With 5-Inch Retina Display
May 28, 2012, 2:23 PM
Samsung Display Officially Launches as World's Largest Display Manufacturer
April 2, 2012, 9:26 AM
Samsung Announces Galaxy S5 Plus with Snapdragon 805 Processor, LTE-A
October 22, 2014, 3:40 PM
Motorola Further Increases Moto 360 Battery Life with New Update
October 22, 2014, 8:08 AM
Apple's iPad Air 2 Features Triple-core A8X Processor, 2GB of RAM
October 21, 2014, 8:32 PM
Toshiba Launches 11”, 2-in-1 Convertible PC for $329
October 21, 2014, 2:11 PM
Microsoft Begins Shifting Nokia Lumia Branding to "Microsoft Lumia"
October 21, 2014, 10:52 AM
Tim Cook Touts Apple’s Product Portfolio, Performance in Letter to Employees
October 21, 2014, 8:05 AM
Most Popular Articles
Cool Science Video of the Day: Carnivorous Leech Eats Giant Jungle Worm
October 16, 2014, 6:44 PM
Chinese Government Declares Digital War Against America's Top Tech Firms
October 20, 2014, 12:07 PM
PS4 "Masamune" Update 2.0 Will Bring New Music and Customization Features
October 17, 2014, 1:05 PM
HBO, CBS Lead Charge to Ditch Cable
October 16, 2014, 4:40 PM
Update: Motorola Droid Turbo Coming Oct 28, 48-hour Battery Life Confirmed
October 19, 2014, 9:19 PM
Latest Blog Posts
The Surface Mini That Was Never Released Gets "Hands On" Treatment
Sep 26, 2014, 8:22 AM
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
Space Terrorism is a Looming Threat For the United States
Apr 23, 2014, 7:47 PM
Facebook Aims to Provide Internet to "Every Person in the World" with Drones, Satellites
Apr 1, 2014, 10:20 AM
Retail Mobile Sites Experience Outages in Light of Simplexity's Bankruptcy
Mar 14, 2014, 8:48 AM
More Blog Posts
Copyright 2014 DailyTech LLC. -
Terms, Conditions & Privacy Information