You can't compare eInk with backlit LCD, but front-lit LCD panels totally exist; see any pocket calculator. For a dot-matrix display, the original Gameboy Color is the best example I personally own, but I'm sure countless others exist.

The main trouble I think is that very few (any?) manufacturers are making front-lit LCD panels at typical monitor sizes and resolutions. I guess there's not really a market for it? But if such a thing exists I'd compare the heck out of it and eInk.