Self-scanning light-emitting device

Details Self-scanning light-emitting device Self-scanning light-emitting device

B - Operations, Transporting

41

J

B41J 2/45 (2006.01)

Patent

CA 2348400

A self-scanning light-emitting device in which the number of bonding pads can be decreased to three or two comprises a light-emitting element array including a large number of three-terminal light-emitting elements having an electrode for controlling the threshold voltage or threshold current and arranged linearly, an electric means having unidirectionality of voltage or current and interconnecting the control electrodes of adjacent light-emitting elements, two clock pulse lines for supplying a two-phase clock pulse to one of two remaining terminals of every other light-emitting element, and a power supply line connected with each control electrode of each light-emitting element through each load resistor, wherein the resistance of the load resistor connected with the control electrode of the light-emitting element emitting light first is lower than the resistance of the other load resistors.

L'invention concerne un dispositif luminescent à auto-balayage dans lequel le nombre de plots de connexion peut être réduit à deux ou trois, comprenant une matrice d'éléments luminescents comportant un grand nombre d'éléments luminescents à trois bornes ayant un électrode servant à commander la tension seuil ou le courant seuil et disposés de manière linéaire, des moyens électriques unidirectionnels en tension ou en courant servant d'interconnexion entre les électrodes de commande d'éléments luminescents adjacents, deux lignes de signal d'horloge fournissant un signal d'horloge biphasé à une des deux bornes restantes de tous les autres éléments luminescents, et une ligne d'alimentation électrique reliée à chaque électrode de commande de chacun desdits éléments via chaque résistance de charge, la résistance de la résistance de charge reliée à l'électrode de commande de l'élément luminescent étant d'abord inférieure à celle des autres résistances de charge.

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