What type of LCD monitors/TVs have this type of part?

Some time ago I took apart a few small LCD monitors. One part that I kept was a piece of plastic which was part of the "layered cake" that a typical LCD monitor has as its screen. It's made of translucent plastic, is the size of a laptop screen, but what makes it different from most other plastic screen layers I have pulled out is that (i) it's thick (maybe about 5 mil) and (ii) it's hard.

This is a question to those who know a lot more about LCD technology that I do (which is probably most people on this forum): what types of LCD monitors/TVs might have this type of thick hard plastic "layer"? I am asking because I want to find a part like this, but bigger, I need at least 33" horizontally or vertically, to repurpose for a special project. (If I succeed, I'll post photos of that project in a separate thread)



I have not taken apart that many LCDs but from what I remember, no other one that I've processed has a part like that. That is, they all have layers but they all seem to be thin and flexible rather than thick and rigid.

So am I likely to find a part like this as large as I need? Is this older technology and they don't make them like that anymore? Or some specific type/make/model uses them? I am just trying to make my search a bit more focused, or maybe abandon it altogether if I know in advance I won't find what I need. Thx