ins and outs of capacitive touch screen

[Dr_Doggy]

so here is where i am, i have a android which i dropped and sent a crack right through the middle, touchscreen below the crack workd but nothing above, so i pulled off all the glass hoping it work better, after that though nothing,

also after pulling off the glass there is a flap, which looks like the connector for the topplate but there looks to be foam between? is this correct, or should the ribbon connect directly to the plate?

right now i can hold the plate to certain position and get the cursor to show and hold still,

and i can get a bit of motion but not stable enough to enter passkey(which is all i need)
wetting my finger and touching the flap causes erratic responses ALL OVER the screen, which leads me to believe all the data goes in on that flap...?
I figure the little flap is the +side of the capacitor, and the metal plate under the LCD is the -side of the capacitor,


I am at the point now where i want to put some clips on the flap and feed it some data,
which leads me to the question,

it its prolly oscillator which changes f @ capacitive response, but how does it do
X-axis && Y-axis (or should i look for more flaps!)??

what is best way to simulate xC? how should i go about hacking in??

scope on plate says:


but is this just stray rf, i did get 60hz noise too?

 

[CalebG]

All the ones I have seen have microscopic wires in the glass in a checkerboard pattern, sometimes you can get new glass from Ifixit.com depending on your model. Without the glass Id say its done for.

 

[response02]

All the ones I have seen have minute cables in the cup in a checkerboard design, sometimes you can get new cup from Ifixit based on your design. Without the cup Id say its done for.

 

[Dr_Doggy]

definitely toast, i could not see any checkerboards though, but upon closer inspection i am able to see the bus in the ribbon, it looks to have a bus on the left, space, bus on the right, I will guess that this checerboard is much like a keyboard matrix, the phone is definitely toast, but i need to unlock it, so i can flip it to usb storage mode,

I just have this feeling that unlike a keyb matrix, this one is analog, so i would think to use resistors to close the circuit, but this is CAPACITIVE system, lol does that mean i should close the circuit with capacitors??

 

[CalebG]

Mine mounts automatically in my computer when I plug it in with the usb cord, then you can copy the contents onto a backup drive. Maybe try wiring up two probes with a tiny capacitor between to try to activate the bus?