It is precisely the end of July. We have not seen a Jolla Tablet at our doorstep.
It is not a bad thing!
Calm your comments down people! Sailors have been hard at work! I have not covered the previous news about the delay because it did not include sufficient information as a lot of the information are under NDA (Non-disclosure Agreement) as mentioned in this post. Thus the post from JollaUsers would be pretty pointless just saying the tablet is delayed.
Therefore I decided to “delay” the post till now (get it? delay? not funny? okay.) so that we can have more information regarding the whole process.
The hardware changes
There has been 2, not one, but TWO display changes despite us hearing one change.
Not one new display, but two
Hence we began our search for alternative displays, and found one that showed great promise from the sample panel. In terms of specs, it translated to an increase in the contrast ratio from 700 to 1000, as well as luminance from 320 to 420. It should be noted that these are values on paper for the panel before it is laminated with touch foil and glass. As it looked good, we decided to make the change for our next build with that display panel. The build was ready just in time for MWC (Mobile World Congress) 2015, where we showed the Jolla Tablet to the whole world. Despite numerous improvements, this new (second) display had a low yield rate, which manifested as yellow spots on the display, and was again something we could not approve for the product. This issue was investigated closely in the build/lamination process as well as on the panel level, but we were not able to fix it with the panel in question. So, it was time to look for another panel that would have feature parity with this second panel, as going back to the first one was not really an option anymore after seeing the beautiful colors on the second display.
The third display which has similar specifications to the second display was found after a period of searching, however this display has a different display interface – MIPI (Mobile Industry Processor Interface) instead of the eDP (embedded Display Port). The difference meant that we had to make changes to the PCB. Intel Baytrail SoC (System on Chip) supports MIPI interface, but that MIPI interface is not capable of providing high enough resolution for our display, thus we had to come up with an alternative solution to this. The identified solution was to add an additional bridge IC (integrated circuit) to the PCB that converts eDP output to MIPI output for the display without losing quality or performance. Furthermore with this PCB change and new display, some mechanical parts required modifications because of the different components.
additional hardware changes
There is more to it, as Saukko explains:
In the meantime, we also did a couple of additional hardware changes. The first one is an issue arising from our internal testing, where the micro-AB type USB connector did not provide proper mechanical protection for users inserting the wrong side of USB cable to the port, so we changed it to the micro-B type connector. Unfortunately we could not go with USB micro-C type connector, due to limited availability. Finally as a bonus to all of you, we added a Hall-sensor which allows accessory covers to turn off the display when the cover is closed.
So it is looking bright. Hopefully we will have the tablet pretty soon. Although no dates were mentioned anywhere, but it is looking pretty solid to my eyes.
Keep it up sailors!
With love from JU.