Converting Black on White LCD character displays to White on Black - How to

[lesthegrngo]

If anyone is interested, I have converted my black on white LCD character displays to white on black(ish), you can see a before and after. I searched fruitlessly online for these 8x1 modules in white on black, and was always unhappy with the CMSC having the black on white displays. While not a true black background, it is way better than it was

It's not difficult, but it is a bit fiddly. If there is enough interest I will extend this with a how to

Cheers

Les

Edited May 31, 2023 by lesthegrngo

[Nikolas_A]

Polarizer film?

[lesthegrngo]

Yes, although it's not quite as simple as just putting polarizer film over the top, you have to remove what is there already otherwise it acts weirdly. Also I had to get a couple of types of polariser before I found one that was suitable, although as long as you avoid ones with mirror film or other treatments you should be OK

Les

[Scott-S6]

In many cases you can simply take the polarising film that's in the display and flip it. 

[lesthegrngo]

It needs to be rotated through 90 degrees, so in the cases on ones that are not square unfortunately that doesn't work due to shape being wrong. Flipping it front to back will not change the polarisation

Cheers

 

les 

[lesthegrngo]

If anyone is interested I found a very simple and cheap way to make the LCD displays the correct green colour.

It was as simple as some self adhesive transparent green plastic sheet from Ebay, which was simply cut to fit into the front of the LCD display. 

Finally I have the A10 CMSC displays showing in the right colour, which was niggling at my OCD!

Cheers 

Les

[slowmover]

Can you tell us how you do it ?

[lesthegrngo]

Let me do a 'how to' with pictures 

Les