Process for displaying information.

摘要

A display panel comprises a semiconducting oxide layers (12) between a hole injection layer (11) and an electron injection layer (15). The electron injector contains a metal oxide in a fine particulate form. When the electron injection layes is biased negatively with respect to the hole injection layer, both holes and electrons are injected and an image is formed by the trapping of electrons in color centers in the oxide layer. Reverse biasing erases the image.