Undesired light passage preventing device - has opaque outer surface of each semiconductor light source cell, parallel to cylinder axis
The device is intended for application in point-like display matrices, using semiconductor light emitting elements, thus preventing light penetration into regions of the display which should remain dark. Each semiconductor light emitting element has a housing whose outer surface, parallel to the cyl...
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| Format: | Patent |
| Sprache: | eng ; ger |
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| Zusammenfassung: | The device is intended for application in point-like display matrices, using semiconductor light emitting elements, thus preventing light penetration into regions of the display which should remain dark. Each semiconductor light emitting element has a housing whose outer surface, parallel to the cylinder axis, is opaque. Preferably this outer surface is provided with a coating of paint. Alternately the housing may have a sleeve for one or several light emitting elements. |
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