| 摘要 |
<p>An electroluminescent cell (20) comprises a first electrode (22), a latticed second electrode (28) and a luminiferous layer (24) and a dielectric insulating layer (26) interposed between the first and second electrodes (22, 28). The latticed electrode (28) comprises an electric conductive layer (30) with a plurality of openings (32) therein. In use an alternating electric field is applied across the first and second electrodes (22, 28). The openings (32) may be arranged in adjacent rows (35) which are electrically isolated from each other to form a plurality of separate second electrodes (28). In a particular embodiment, the electroluminescent cell (20) is used for converting an analog image of electrically conductive matter, such as an image of a human fingerprint, into a digital image and includes a sensing device such as a photodiode (34), for sensing electromagnetic radiation emitted by the luminiferous layer (24) responsive to the presence or absence of electrically conductive matter across the openings (32) and electronic circuitry for converting the electromagnetic radiation into digital information (36).</p> |
