Dual-Screen Siam 7X Smartphone Portends Competition For YotaPhone

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aldaia

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Dual screen is a dead end. The way to go is a hybrid screen that either behaves as rich color Oled or low power e-ink depending on the situation.
In 2010 Pixel Qi developed a hybrid LCD screen for netbooks that lets the user toggle between a low-power reading mode and a brighter, standard LCD mode.
The 2011 Apple patent, “Systems and Methods for Switching Between an Electronic Paper Display and a Video Display,” illustrates a method for displaying static content in e-ink while other portions of the screen appear using standard LCD technology.
However, the question remains if it is cost competitive to implement, since no phones (where the screen is known to be the main battery drainer), have been produced with such screen yet.
 

InvalidError

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And I doubt any ever will be: adding an eInk layer on top of the LCD/OLED causes additional optical loss and light dispersion even in "translucent" mode, which means you need a stronger backlight/OLED and end up with a slightly more blurry display. Not ideal if you want to design a device that has ~10 hours of LCD/OLED screen-on time per charge using the smallest, thinnest, lightest battery possible.
 

jasonelmore

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i can already tell the build quality is crap.. notice the sim card slot wont go in all the way and is crooked, notice how bad the micro usb port is scuffed up, and this is supposed to be a impeccable quality sample for promotional videos.
 

aldaia

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adding an eInk layer on top of the LCD/OLED causes additional optical loss and light dispersion even in "translucent" mode, which means you need a stronger backlight/OLED and end up with a slightly more blurry display.
OLED dosn't use backlit, and OLED can be made transparent.
http://www.oled-info.com/transparent-oleds
So the actual way to go for hybrid screens is probably OLED on top of e-ink
By the way Geak Watch 2 Pro smartwatch has an innovative display that uses both colour LCD and E-Ink, aparently its a transparent LCD display on top of a e-ink.
http://www.gizmodo.co.uk/2014/10/dual-e-ink-and-lcd-displays-gives-the-geak-watch-2-pro-smartwatch-an-18-day-battery-life/


P..S: sorry for previous double post (probably due to reloading page)
 
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