Can I change the viewing angle of an LCD display?

[mike]

I have a bunch of battery-operated digital clocks with LCD displays.
They all look good from above, but when viewed from
below, the display looks blank.

I want to be able to view it from bed when it's on the night
stand.

If memory serves, the contrast input on an LCD display
changes the viewing angle.

I've not taken 'em apart, but I fully expect to find
a glob of epoxy covering an unpackaged clock chip and not
much else.

Yes, I could build a weighted wedge to make the display
face down slightly, but I'd rather just fix the display.

Ideas?
Thanks, mike

 

[Robert Roland]

I have a bunch of battery-operated digital clocks with LCD displays.
They all look good from above, but when viewed from
below, the display looks blank.

Some graphical LCDs can be configured for either viewing angle. You
set a configuration parameter in the controller, and it turns the
image upside-down.

If your LCDs are simple 7-segment ones, it is only a matter of
swapping the segment connections around so it displays an upside-down
image.

 

[[email protected]]

Some graphical LCDs can be configured for either viewing angle. You
set a configuration parameter in the controller, and it turns the
image upside-down.

If your LCDs are simple 7-segment ones, it is only a matter of
swapping the segment connections around so it displays an upside-down
image.

He's not talking about inverting the characters, rather changing the viewing
angle. LCDs have a limited viewing angle for maximum contrast which is often
quite limited (for any contrast). Often this angle can be set with a bias
voltage, though sometimes this note isn't accessible or is software
controllable.

 

[Rich Grise]

.krow ton did tI .ecno taht deirt I

And what the heck is an "ECNALUMBA?" ;-)

Thanks,
Rich

 

[[email protected]]

And what the heck is an "ECNALUMBA?" ;-)

If you can't read it, it doesn't matter. ;-)

 

[Charlie E.]

And what the heck is an "ECNALUMBA?" ;-)

Thanks,
Rich

That drove me crazy until I realized you misspelled "ECNALUBMA"

Charlie

 

[Rich Grise]

That drove me crazy until I realized you misspelled "ECNALUBMA"

OOpps! I guess that's egg on my face!

Thanks,
Rich