So I went a little different of a route than what I originally planned by trying to make an experimental reflective lcd display. Instead of spray painting inner rear side of the monitor I completely removed the front polarizer layer and disconnected the backlight. In place of the front polarizer I use my maui jim polarized sunglasses. The removal of the front polarizer layer has made the monitor somewhat bright enough to play with as a reflective lcd monitor. Though it is probably 10% or so of the brightness of the Sun Vision Display rlcd monitor.
An interesting thing is that I get noticeably more eyestrain when looking at the monitor in portrait than when it normal landscape orientation. I'm not exactly sure why this is but I'm thinking that the way the LCD subpixel matrix is laid out probably has something to do with it. I try using it for some time to see what it's like.
You can see here the monitor and how the adhesive is still not fully removed. https://imgur.com/IWWZ5DM
This is a picture when looking at the monitor through the polarized sunglasses. https://imgur.com/zIynpwp
Here's a lux meter reading. It's a 10x reading so around 10,000 lux. It seems it needs at least around 5,000 lux for it to be usable. https://imgur.com/VXl8lGf
Here's a portrait orientation of the monitor while looking through the polarized sunglasses with around 3300lux illumination. https://imgur.com/EIUGABM
Note, it was an absolute bear to get the adhesive off and I still haven't fully gotten it all off but it's good enough for my experimentation purposes. I had to use some kleen strip stripping compound for the heavy lifting. 91% isopropyl alcohol was marginal and only used to get the last bit off and make the glass clear.
I did some experimentation with a diy reflective lcd monitor setup that I made. I made it by taking my HP 22es monitor and stripping the front surface of the screen down to the bare glass of the LCD panel itself. I then spray painted the rear surface of the lcd panel with white paint to make it reflective. I disconnected the lcd backlight. I wear polarized sunglasses in place of the front polarizer layer that I removed. It's too dark to be useable normally but there were some interesting effects I've found in experimenting with it.
Primarily that the reflective properties of the panel now are similar to a comb filtering effect of directional speakers. Here is a polar plot picture of what I mean.
Here's a youtube video demonstrating the effect from shining a bright flashlight with a highly directional beam onto the screen. The moving light and dark bands of light are the alternating bright and dark reflectance of the screen depending on the viewing angle.
https://www.youtube.com/watch?v=IUCQZ0mF7-8
I wonder if this comb filtering effect causes the eyes to see slightly different images when looking at the screen and thus just using a single eye alleviates this issue of conflicting signals. I do feel that LCD screens seem easier to focus on clearly the farther back I am from them. I wonder if it's because the eyes are far enough away to not be subject to this comb filtering effect.
Also I wonder if the "static" and "sparkling" effect of the screen that many posters are experiencing, myself included is something of a combination of the comb filtering effect, temporal dithering of the LCD panel, and the effects of the various backlight film layers described in this thread https://ledstrain.org/d/1458-ips-screen-parts-description-and-dangerous-parts-hypothesis-lightvergence that create a kind of unfixable flickering/dithering.
Even a panel with no temporal dithering might still have this glittery effect as the combination of the backlight film layers and lcd panel will create that sort of glittery graininess that will change depending on the viewing angle, and as your eyes and head are constantly moving, the glittery graininess of the screen will be constantly changing, essentially mimicking temporal dithering.