These are reflective 7-segment LCD displays that are showing this abberration as a splotch from the center. It seems to get worse with age. Does anyone know what causes this?
I thought the LCD fluid is only where the segments are and the displays work so it's not the fluid.
Looking at the display using a polarized filter at different orientations doesn't show anything matching the splotch, it's either all black or the same as using no filter. I thought the polarizers might be causing it.
The LCD sandwich is an aluminum backing and two layers of glass glued together, and a plastic polarizing film on the front. Made by AND Japan.
During a heat wave this summer, maybe 30°C an ANENG AN8008 display showed the same pattern

But it went away when things cooled down. Doubt they're usable in hot weather lol. This is what had me puzzled what is going on with LCD displays.