I've been looking for a small transparent display to use as a programmable light mask in a pinhole camera between light source and the film. I presume OLED woul

I've been looking for a small transparent display to use as a programmable light mask in a pinhole camera between light source and the film. I presume OLED wouldn't actually block light passing through. Maybe LCD would? Does the things I'm searching for exist. A high clarity transparent display that will cast a shadow behind the parts that are darkened.