Expert: iPad heat claims overblown, not a real issue
Thursday, March 22, 2012 @ 4:01 pm › MacDailyNews
“DisplayMate Technologies Corporation president Ray Soneira has delved further into the technology behind the new iPad’s Retina Display as well as its relationship to the battery and come up with a simple conclusion: the new iPad, operating normally, should run a bit warmer than the previous model,” Electronista reports.
“He calls the thermographic portraits circulating the web ‘overblown’ and says the extra heat is the natural consequence of increased power,” Electronista reports. “The third-generation iPad uses 2.5 times as much backlight power to illuminate the new display at the same luminance levels as the previous model, Soneira found. The high pixels-per-inch (PPI) ratio of the new display makes the LCD have a lower light efficiency and thus power efficiency. The doubled number of LEDs also give off 2.5 times as much heat, but remarkably the new battery in the iPad manages to (mostly) compensate for the increase.”
“The number of backlight LEDs has risen from 36 to an estimated 72 to 82, contributing heavily to the need for a battery with 70 percent more output than the previous model,” Electronista reports. “Soneira calls for future iPads to employ IGZO displays as soon as possible, saying the display technology pushed by Sharp offers even more efficiency and lower cost than the LTPS technology used in the iPhone. After a production delay, Sharp is expected to start supplying displays for iPads along with Samsung and LG Display, though it is not expected to incorporate IGZO technology at this point.” |
