Elastic wave device chip, method for manufacturing same, elastic wave device, and module including elastic wave device chip or elastic wave device

An elastic wave device chip includes a piezoelectric substrate, a wiring pattern formed on a main surface of the piezoelectric substrate, and a plurality of resonators formed on the main surface of the piezoelectric substrate and electrically connected to the wiring pattern, the piezoelectric substrate including: a first piezoelectric element forming a first region of the main surface; and a second piezoelectric element which has characteristics different from those of the first piezoelectric element, is provided on the first piezoelectric element, and forms a second region different from the first region in the main surface. Thus, an elastic wave device chip and the like which improve filter characteristics and achieve miniaturization can be provided. 一种弹性波装置芯片，包含压电基板、形成于所述压电基板的主面的布线图案，及形成于所述压电基板的所述主面并电连接于所述布线图案的多个共振器，所述压电基板包括：第1压电性元件，形成所述主面的第1区域；及第2压电性元件，具有与所述第1压电性元件的特性相异的特性，设置于所述第一压电性元件上，并形成所述主面中不同于所述第1区域的第2区域。借此，能提供一种改善滤波器特性并达成小型化的弹性波装置芯片等。