Smallest LCD/LED-module character/dot display ???

[watchjohn]

.


Hi,

For my wristwatch sized bugdetector
i need a very small display(module)...it should be:

a) Small as possible something like 20 mm x 10 mm x 3 mm

b) 4 characters (alphanumeric or even better dotmatrix)

c) Low voltage 5 V or better less

d) Low power draw 100mA or better much less

e) LCD or LED technique

f) Interface methods can be serial/i2C/parallel/any other

Examples of what it should display (one at the time)

VOL4
SQL8
BND3
MENU
1256

Battery power available 2.4 V/3 V (2x Nimh/Nlkaline)
If higher voltage required a DC/DC converter could be used
but should be inductor/RF-less since that might cause
interference in the receiver

Display should be a current model
Available from stock...NOT custom
Preferably more then only 1 supplier
Price max 40 Euro´s

I have done very extensive internet searches
what i found might work but each of them has it´s own
problems:


a)

Siemens/Osram/HP/Avago
SLR2016/SLO2016/SLG2016/SLY2016

http://tinyurl.com/2ryoum

Not bad...but slightly to big (hight)
Needs 5 V /110 mA (a litle to high/much)
Don´t like the (to much)separation between digits
Price OK.



b)
Osram ISD-series...same as Avago/HP (LED dotmatrix)

http://tinyurl.com/34od7n

Almost same as a) but less higher

Very nice...but very expensive and nowhere in stock.



c) PacificDisplays 4101 (LCD serial I2C)

http://tinyurl.com/3a46pq

http://tinyurl.com/3cgkh6

http://www.pacificdisplay.com/char_lcd.htm

Almost !
...just it does only seven segment numbers
NOT alphanumeric characters.
I like to have real charactars not ugly characters
made-up from 7 digit numerical displays.

Power supply can be 2 to 6 volts at less then 200 uA !
I2C interface is perfect !

Needs a backlight diffuser ( adds 3 mm )
so total thickness a little to much again

Biggest problem...NOT Alphanumeric
Only 1 supplier in the world.


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Resuming
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Anyone knows of a display (module) that suits my needs ?


Thanks !

WatchJohn

 

[watchjohn]

Arrggghh,

Checkout the new iPhone...out tomorrow

http://tinyurl.com/2y7zwe

Wonder what display that is...probably OLED
but...with a touchscreen !


WatchJohn

 

[richs]

Skogsgurra- (continuing OT thread for a moment).

Remember those "battery check" caloric indicators that used to be on the Duracell? batteries and were also available as stand alone little strips? Would suspect that the current through these would be not too bad. Wonder also if they are still available. Certianly, if found, they could be really cheap and might replace the analog meter? Would it be worthwhile to check some of the chinese manufactures if they are still making them?

Cheers,

Rich S.

 

[geekEE]

Rich, those battery indicators are actually just resistances across the battery with a simple liquid crystal thermometer on them (similar to the liquid crystal thermometers that you see on many fish tanks). The resistor is only connected when you press on a couple of contacts at each end of the battery because it heats up and the liquid crystal shows the temperature, which translates to battery voltage roughly. It puts quite a load on the battery when it's connected, so that not a low power solution. On the other hand, because it puts a load on the battery, it makes them better battery indicators (helps take internal resistance into account).

 

[richs]

Hiya-

Yep. I'm familiar with them. Thanks. Yeah, probably take a bunch of power to drive it continously.