Method for forming thermal inkjet printhead, thermal inkjet printhead, and semiconductor wafer

    公开(公告)号:US11225080B2

    公开(公告)日:2022-01-18

    申请号:US16333194

    申请日:2016-10-19

    Abstract: The present invention provides a method for forming a thermal inkjet printhead, comprising at least the following steps: providing a semiconductor wafer including an integrated electronic circuit and a section for forming a thermal actuator element, the integrated circuit comprising at least: a thermal insulating layer formed over a substrate; and a first metal layer formed over the thermal insulating layer; wherein the first metal layer extends into the section for forming the thermal actuator element; and etching a section for forming a thermal actuator element to the first metal layer such that the first metal layer is acting as an etch stop layer. Further there is provided a thermal inkjet printhead formed by a method of the present invention and a semiconductor wafer for forming the thermal inkjet printheads by a method of the present invention.

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