Today I received my first set of LPD8806 LEDs and there are six copper pads but only 4 pads are used. All of the images of LPD8806 strips I have looked at before had 4 pads. Does anyone on this forum have experience with this type of strip? I was wondering if the extra traces are capable of supporting ground and power or if they have other functions without opening the tube?
I have 20m of 8806 strips, but they only have four pads. Curious.
Here is the listing: http://www.aliexpress.com/item/10-off-per-100-DHL-free-shipping-30m-lot-dream-color-changing-dc5v-waterproof-ip65/1634145762.html
Email them and ask?
I did send send a request to the vendor but I don’t expect a quick response (its 2 am on Saturday in China). I will follow up with what I get back from the vendor but until then, I was hoping there might be others with experience.
Continuity test. I have a roll of LPD8806 with five pads, two of them are GND.
Actually, it does look like the outer ones are paired with the ones right next to it, so you have two VCC and two GND.
@Ashley_M_Kirchner_No Thanks - I don’t want to open the tube before I fully understand what this was for just in case these are not what I ordered. I took a ruler to these strips and found they are 14mm wide in an 18mm tube.
Are the ends sealed? If not, use that to test for continuity between the pads.
The ends are sealed
Got a small bright flashlight? Look at the strip at an angle, so the ridges of the traces cast a shadow. From your picture, this is what I can see: http://www.ka4designs.com/LPD8806-lines.jpg (the remaining traces are for the LED itself.)
I put the strips under a USB microscope and looked at both sides and it shows you are correct. The VCC and GND are bonded to the first two pads.
https://drive.google.com/file/d/0B3BIUZiBHd2DVksyMXZjOEVuVHc/edit?usp=sharing
https://drive.google.com/file/d/0B3BIUZiBHd2Dc2R4SWZKeXU1THc/edit?usp=sharing
Amazing what a bit of forensics can do. 
Now, keep in mind one thing though: just because you have dual pads, does not mean you can pump twice the amount of juice through the strip. It’s only doubled in size at the pads. Past that, it goes back to the regular thin trace.
It may not give me more power through the strip but it does make it easier to solder the pads. I might even be able to solder without the magnifying lamp.
I can see that being a plus.
This is IC Magic RGB LED Strip Light,GND is used for Signal Wire,contact me by mjjcsales2@163.com and tomorrow I will give you the answer.
The vendor verified what @Ashley_M_Kirchner_No helped me figure out. The extra pads are simply power and ground.