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(sub) miniture LCD

C

ChronoFish

Jan 1, 1970
0
Hi there,

I'm looking for a VERY small 1 line LCD display - approximately 9 chars long.

Size of the digits should be no larger than 6mm and would prefer something on the order 3 mm. No backlight - prefer black on grey.

Thanks!
- CF
 
W

Wim Ton

Jan 1, 1970
0
I'm looking for a VERY small 1 line LCD display - approximately 9 chars
long.
Size of the digits should be no larger than 6mm and would prefer something
on the order 3 mm. No backlight - prefer black on grey.

Salvage one from a calculator.

Wim
 
C

ChronoFish

Jan 1, 1970
0
Wim Ton said:
on the order 3 mm. No backlight - prefer black on grey.

Salvage one from a calculator.

Wim


This seems easier said than done. That is exactly what I tried to do - but the connection point is pretty funky - some sort of
conductive rubber that lays on the PCB. While intriguing and fun to play with - I need something a little more robust to mount in
my case. It is about the right size though.

Any other thoughts?

Thanks!
CF
 
J

John Woodgate

Jan 1, 1970
0
I read in sci.electronics.design that ChronoFish <[email protected]>
wrote (in <[email protected]>) about '(sub) miniture LCD',
This seems easier said than done. That is exactly what I tried to do -
but the connection point is pretty funky - some sort of conductive
rubber that lays on the PCB.

That's how they normally are connected. The idea is to mount the device
resiliently and without any bending force developing.
While intriguing and fun to play with - I
need something a little more robust to mount in my case. It is about
the right size though.

The conductive rubber connectors are quite robust (think of the hard
treatment calculators often get) but the mounting does need some careful
dimensioning.
 
P

Phil Hobbs

Jan 1, 1970
0
John said:
I read in sci.electronics.design that ChronoFish <[email protected]>
wrote (in <[email protected]>) about '(sub) miniture LCD',



That's how they normally are connected. The idea is to mount the device
resiliently and without any bending force developing.




The conductive rubber connectors are quite robust (think of the hard
treatment calculators often get) but the mounting does need some careful
dimensioning.

Right, plus the brittleness of the glass and the size of the CTE mismatch
with FR-4 board causes massive breakage or peeling of the metal pads under
temperature cycling.

Cheers,

Phil Hobbs

IBM T. J. Watson Research Center
Yorktown Heights NY 10598
 
B

BobGardner

Jan 1, 1970
0
the connection point is pretty funky - some sort of
conductive rubber that lays on the PCB.

That's a 'zebra strip'. I've had buffalo burgers and clam strips, but those
zebra strips are tricky....
 
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