Patent ID: 6507057
Filing Date: 2003-01-14
Classification: B41J,H01L

Abstract:
A cross under metal wiring structure for a self-scanning light-emitting device including a self-scanning transfer element array having such a structure that a plurality of three-terminal transfer elements of pnpn-structure each having a control electrode are arranged, the control electrodes of the transfer elements neighbored to each other are connected via first electrical means, a power supply line is connected to the control electrodes via second electrical means, and clock lines are connected to one of two terminals except the control electrodes of each of the transfer elements; and a light-emitting element array having such a structure that a plurality of three-terminal light-emitting elements of pnpn-structure are arranged, the control electrodes of the light-emitting element array are connected to the control electrodes of the transfer element array, and a line for applying a write signal connected to one of two terminals except the control electrode of each of the light-emitting elements is provided; characterized in that:the cross under metal wiring structure comprises, a lower wiring provided on a topmost layer of the pnpn-structure isolated in an island by a groove, and an upper wiring connected to the lower wiring through a first contact hole opened in an insulating film covering the isolated pnpn-structure and to a layer just below the topmost layer through a second contact hole opened in the insulating film.