What is the proper order of diffuser panels?

@ericsacks It'll depend on how many sheets yours has. The one I'd work on had a piece of (start from the backlight) Plexiglas followed by a diffuser then a Fresnel lens and finally the polarizer. Yours actual looks properly assembled. You will notice immediately when your sheets are messed up. The light bleed could come from the plastic frame where the LCD assembly sits in. Make sure it is properly/straight assembled. Again, your issue are not your diffuser sheets.

@oldturkey03 Thank you for the reply! So if I’m understanding you correctly, the order and numbers of diffusers vary by display? I don’t know what a fresnel lens or polarizer are nor what they look like, but I think you are probably correct that mine seem to be in the correct order. I believe the order I put them in was a diffuser, followed by plexiglass, then either a diffuser followed by a silver sheet (shiny side down) or possibly just the silver sheet on top of the plexiglass, I don’t quite remember, then one more diffuser before the LCD. I have added a number of test screens to this posting, could you please take a look and let me know if things look as should be expected (assuming that I have yet to re-tape the display to try to curb the leaking)? Please note that the 1st pic is supposed to be a BLACK background….

@ericsacks “numbers of diffusers vary by display” more by manufacturer and technology. It does look it is right. Do you remember if your plexiglass was clear or if it was milky white? As for the bleeding, yes, if the diffuser sheets are just slightly bowed, the light will leak. It is absolutely possible that reapplying the tape will fix this.

@oldturkey03 If I remember correctly I believe the plexiglass was clear on the smooth side and the bumps on the back were translucent.

After reading your response as well as the response from @danj, I think it’s probably worth attempting to replace the aged diffusers while I still have the display more or less apart in order to restore it’s original clarity. However it does not appear that anybody manufactures new, application specific, diffuser sheets (though I imagine this could be a pretty profitable market segment for someone who has the means to manufacture them, as high end displays become increasingly more expensive and hold their value fairly well, I would think that consumers would prefer to repair rather than replace) but I have found rolls of sheets that I should be able to cut-to-fit. My question regarding this are, is it the diffuser sheets themselves that warp from heat, the polarizer, the prismatic sheet, or all of them? And what specs should I look for in the replacements?

@ericsacks the "bumps" on the plexiglass help to diffuse the light as well. You should see a difference in number of bumps to the center of the sheet. I have not come across a complete set of diffusers/polarizer sheets but I've honestly not specifically looked for those. Let us know what it says on the label that is affixed to your LCD screen. That way we can try and see if we can match them up.

Yes, in theory those sheets could warp under hot conditions, but your monitor is designed to displace that heat efficiently. In all honesty, the backlight should not create heat hot enough to do any harm to those.