Structure and method of bi-layer pixel isolation in advanced LCOS back-plane

Processing methods may be performed to form a pixel isolation structure on a semiconductor substrate. The method may include forming a pixel isolation bilayer on the semiconductor substrate. The pixel isolation bilayer may include a high-k layer overlying a stopping layer. The method may include for...

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Bibliographische Detailangaben
Hauptverfasser: Yang, Zihao, Briggs, Benjamin D, Yu, Lan, Sherwood, Tyler
Format: Patent
Sprache:eng
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Zusammenfassung:Processing methods may be performed to form a pixel isolation structure on a semiconductor substrate. The method may include forming a pixel isolation bilayer on the semiconductor substrate. The pixel isolation bilayer may include a high-k layer overlying a stopping layer. The method may include forming a lithographic mask on a first region of the pixel isolation bilayer. The method may also include etching the pixel isolation bilayer external to the first region. The etching may reveal the semiconductor substrate. The etching may form the pixel isolation structure.