Piezoelectric substance element, liquid discharge head utilizing the same and optical element
    7.
    发明授权
    Piezoelectric substance element, liquid discharge head utilizing the same and optical element 有权
    压电体元件,利用其的液体排出头和光学元件

    公开(公告)号:US07759845B2

    公开(公告)日:2010-07-20

    申请号:US11683100

    申请日:2007-03-07

    IPC分类号: H01L41/08

    摘要: An optical element satisfactory in transparency and characteristics as an optical modulation element, and a piezoelectric substance element satisfactory in precision and reproducibility as a fine element such as MEMS can be provided. The piezoelectric substance element includes, on a substrate, at least a first electrode, a piezoelectric substance film and a second electrode. The piezoelectric substance film does not contain a layer-structured boundary plane; the crystal phase constituting the piezoelectric substance film comprises at least two of a tetragonal, a rhombohedral, a pseudocubic, an orthorhombic and a monoclinic; and the piezoelectric substance film includes, in a portion in which a change in the composition is within a range of ±2%, a portion where a proportion of the different crystal phases changes gradually in a thickness direction of the film.

    摘要翻译: 可以提供作为光调制元件的透明度和特性令人满意的光学元件,以及作为微细元件如MEMS的精度和再现性良好的压电体元件。 压电体元件在基板上至少包括第一电极,压电体膜和第二电极。 压电体膜不含有层结构的边界面; 构成压电体膜的晶相包含四方晶,菱方,假立方,斜方晶和单斜晶中的至少两种; 并且压电体膜在组成的变化范围为±2%的范围内包括不同结晶相的比例在膜的厚度方向上逐渐变化的部分。