초록 ▼

A three-dimensional memory based on the electron trapping materials, comprising at least two thin film layers of different or the same electron trapping materials for storing information in the form of the trapped charges and releasing information in the form of light energy, each of the thin film l

A three-dimensional memory based on the electron trapping materials, comprising at least two thin film layers of different or the same electron trapping materials for storing information in the form of the trapped charges and releasing information in the form of light energy, each of the thin film layers of the electron trapping materials being sandwiched between a pair of transparent electrodes. The thin film layer itself is a multiple layer of one or more than two types of electron trapping materials in which the impurity atoms are modulation doped with predetermined modulation profiles. The page-by-page addressing is achieved by applying a suitable voltage to the information to be addressed. Separate control of writing and reading processes is made possible by varying the voltage polarity.

대표청구항 ▼

[ What is claimed is:] [6.] An optical memory recording and/or reading system comprising a three-dimensional multi-page optical memory, electrical means for addressing pages of the memory, and optical input and/or output means, wherein the optical memory comprises first and second information layers

[ What is claimed is:] [6.] An optical memory recording and/or reading system comprising a three-dimensional multi-page optical memory, electrical means for addressing pages of the memory, and optical input and/or output means, wherein the optical memory comprises first and second information layers and electrodes sandwiching the layers for selecting a layer to be accessed by the application of an electric field, wherein each information layer comprises electron trapping material with impurity atoms in a generally non-random distribution, wherein the thickness of each unit of storage medium is such that the round-trip optical path difference is an integer number of wavelengths of the writing light, and of the reading light.