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Tamara Schmitz

Using Flexible PC Boards in Consumer Electronics

Tamara Schmitz
TamaraISchmitz
TamaraISchmitz
3/14/2013 5:16:34 PM
User Rank
Newbie
Re: Bigger parts
This is a brilliant suggestion!  I am surprised that manufacturers haven't asked for this.  My suspicion is that the tooling (handlers) for assembly wouldn't be cheap to adapt to the nonstandard heights.

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TamaraISchmitz
TamaraISchmitz
3/14/2013 5:14:49 PM
User Rank
Newbie
Re: Stacking?
Yes, I've seen that!  It was a pretty nifty design.  The issue was solid connection through the spring connections from the daughter card to the main board.

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TamaraISchmitz
TamaraISchmitz
3/14/2013 5:12:00 PM
User Rank
Newbie
Re: Aperture
Manufacturers guard their aperture sizes like my brother guarded his halloween candy.  The aperture (and the candy stash) can get smaller, but not bigger.


As for management understanding, I sing the durge along with you!

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TamaraISchmitz
TamaraISchmitz
3/14/2013 5:09:54 PM
User Rank
Newbie
Re: Stacking?
Currently, the IR sensors are too large and would cause black dots on the screen.  This would be unwanted.  With technology scaling, someday this might be possible.

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mhanuel
mhanuel
3/13/2013 7:32:34 PM
User Rank
Newbie
Re: Stacking?
I think it;s possible to include the IR sensor on the lens sensor, that is, the touch screen sensor. I haven't seen a dedicated FPCB for the IR sensor yet.

Very interesting article.

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TheMeasurementBlues
TheMeasurementBlues
3/8/2013 2:02:11 PM
User Rank
Teacher
Aperture
@Tamara, can the aperture be larger? I'm guessing not. If that case, you need to raise the LED and senros or lower the aperture. Basic physics at work here. But then, when did management ever believe that the laws cost couldn't overcome the laws of physics?

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eafpres1
eafpres1
3/8/2013 11:49:11 AM
User Rank
Blogger
Stacking?
Hi Tamara--interesting problem.  I suppose the final decision includes many variables, including can you use that FPC to support any other components, signals, power, etc. that might spread the cost over more of the system, and possibly reduce complexity somewhere else?

I wonder if you have seen anyone using a daughter rigid PCB in a stack to raise the parts?  This could be relatively cheap to do--design a small rectangular PCB with the pads for the sensor on both sides, large vias to pass power.  Assembly would be a challenge, however, as either the daughter or the sensor would have to go on in a 2nd operation.  

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Michael Dunn
Michael Dunn
3/7/2013 9:33:18 AM
User Rank
Blogger
Bigger parts
I suppose if you're a large enough user, you could get taller components made! (within reason)

Of course, in olden times, components had things called leads, and we could place them as far above the PCB as we liked.

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