Printer head and image forming apparatus having the same
AssigneeSeiko Epson Corporation
InventorTakayuki Kitazawa
Life of this patent
Estimating the term…
Abstract
A printer head includes a plurality of current-driven light-emitting elements that are linearly disposed so as to expose a photosensitive member, and a plurality of pixel circuits, each having a driving transistor that is provided for each light-emitting element so as to cause a driving current to flow in the light-emitting element according to a data signal and a storage capacitor that holds an electric charge according to the data signal and having a gate of the driving transistor as one of a pair of capacitance electrodes and an interlayer insulating film interposed between the pair of capacitance electrodes as a dielectric film, such that a voltage according to the electric charge held in the storage capacitor is applied to the gate of the driving transistor.
Claims9
A printer head comprising:
- a plurality of current-driven light-emitting elements that are linearly disposed so as to expose a photosensitive member;
- and
- a plurality of pixel circuits, each having a driving transistor that is provided for each light-emitting element so as to cause a driving current to flow in the light-emitting element according to a data signal, and a storage capacitor that holds an electric charge according to the data signal and having a gate of the driving transistor as one of a pair of capacitance electrodes and an interlayer insulating film interposed between the pair of capacitance electrodes as a dielectric film, such that a voltage according to the electric charge held in the storage capacitor is applied to the gate of the driving transistor.
Dependencies are inferred from the claim text.