| 摘要 |
This invention provides a solid state image-storage panel, in the form of a multi-layered thin film structure, which can exhibit and retain a high resolution image momentarily impressed thereupon by light. The image can either be projected on the panel in entirety or can be recorded sequentially by a scanning light beam. The intensity of light impinging on an elemental area of the image-storage panel creates local conductivity modulations within the storage film thereof which correspond to the input image. These modulations, in turn, alter local field configurations across an electroluminescent layer disposed adjacent the storage film, thus creating a visible output image. After initial exposure, the conductivity modulations in the storage film are maintained for an extended period of time (several tens of seconds) provided that an applied electric field across the storage film continues to be maintained. This phenomenon is hereinafter referred to as "field sustained conductivity." Removal or reversal of the applied electrical field restores the storage film to its initial insulating condition, and the image-storage panel is thereby erased.
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