Explanation
Also called non silver photosensitive materials, it refers to all kinds of photographic materials except silver halide photographic materials. The working principle is that under the action of light, it can undergo photochemical or photophysical changes, causing differences in the chemical or physical properties of the unexposed area in the exposed area, thereby achieving the purpose of information storage and display.
Classification
Information materials -> Photosensitive and display materials -> Photosensitive and display materials