LCD - how to invert colors

[Guest greene]

black background , bright characters

have done this to some (lcd) projects & a cellphone, all with good result. here is how i mod lcd modules.

remove the metal or plastic frame around the screen carefully, so the glass corners are expossed. on the surface of the viewing area there is plastic film,    a light polarizing filter. these are usually glued .  so

starting with a razor or a fingernail, peel off the filter.      !fradgile glass!   .  if this filter is held to the screen, & rotated 90`the image reverses. that would be it if your screen is square , but most of the time .

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[Guest greene]

 polarized plastic is easy&cheap - it can be recycled out of a larger, non funtional lcd . it is used in photography ,

sheets cost much less than precut circles. it is offered on the net for around us$8 per sq.ft. .   a low budget method to use window tinting. many types of tint are polarized, a easy way to test different types is to bring your (filter removed) lcd  to a tint shops scrap/trash bucket . look for a light , non "mirrored" piece of tint hold this on the lcd , and when it rotated it will go light/dark  background.  look for the contrast

whith a dark background in mind . turn polarized plastic for the darkest screen, tint should get glued then cut with razor,                         and kodak filter should be marked,cut then glued.  used clear rubber cement .

give it a day to dry ,then put it back together.

       you will need more(brighter) backlight

         and it will look turbo cool