Patent ID: 6450621
Filing Date: 2002-09-17
Classification: B41J

Abstract:
A semiconductor device having an inkjet recording capability, comprising:a silicon substrate having a denuded zone (DZ) and an oxygen precipitate (OP) region, where the OP region contains oxygen precipitates (OPs); energy-generating elements for generating energy for ejecting ink, which are formed on the silicon substrate; ink-supplying openings provided as through-holes formed on the silicon substrate; ink-flow channels provided in a layer of forming flow channels being stacked on the silicon substrate, communicating with the ink-supplying openings and corresponding to the energy-generating elements, respectively; and ink-ejecting orifices provided in a layer of forming orifices being stacked on the layer of forming flow channels, communicating with the ink-flow channels, respectively, wherein a size of each defect caused by the oxygen precipitates (OPs) in the OP region is 50 &mgr;m or less.