Re: LCD evaluation and other preparations for FC handset

2018-04-17 Thread Mychaela Falconia
OK, so I picked up the package from HaoRan LCD company and examined their LCDs. Two observations, one expected, the other unexpected: The expected observation: the end of the FPC tail that is meant to go into a connector has straight edges, the corners are sharp 90 deg, no rounding. The unexpect

Re: LCD evaluation and other preparations for FC handset

2018-04-17 Thread Pičugins Arsenijs
> [...] this idea will NOT work for our FreeCalypso handset. Our PCB will > have 8 layers with lots of traces on every layer (intricate 2+4+2 HDI > structure with inner buried vias and two levels of staggered microvias > on each side), and the width of the PCB will extend only slightly past > the w

Re: LCD evaluation and other preparations for FC handset

2018-04-17 Thread Das Signal
Hi Mychaela, > * For the data and control lines, the other end of the wire would need > to go to a pin on an FT2232D breakout board just like the ones we use > for FCDEV3B UARTs - how would this connection be made? Each Kynar wire would be soldered to a classic 2.54mm female wire that can be plug

Re: LCD evaluation and other preparations for FC handset

2018-04-17 Thread Mychaela Falconia
Hi Arsenijs! > A common practice is also putting the connector on the other side of > the PCB, then making a slot which the cable is supposed to go through. > This way, you don't have to worry about LCD and the connector > occupying the same space. Startek folks (one of the two LCD vendors I am w

Re: LCD evaluation and other preparations for FC handset

2018-04-17 Thread Pičugins Arsenijs
> At first I thought "OK, fine, I'll just put the needed FPC connector > on our board", but then I realized that there is a problem: where will > the body of the connector go? Two solid objects cannot occupy the > same space at the same time... How can the LCD rest flat against the > PCB surface if