Elastic wave device, filter, splitter, and communication device

An acoustic wave device comprising:

• a piezoelectric body having a first surface;
• and
• an IDT electrode positioned on the first surface,
• wherein the IDT electrode includes
• a first busbar,
• a second busbar facing the first busbar,
• multiple first electrode fingers electrically connected to the first busbar,
• multiple second electrode fingers electrically connected to the second busbar and arranged in an alternating manner with the multiple first electrode fingers in an acoustic wave propagation direction,
• multiple bar electrodes interposed between the first busbar and the multiple first electrode fingers, and extending parallel to the first busbar and parallel to each other, and
• multiple connection portions including
• a first connection portion that is interposed between the first busbar and a corresponding one of the bar electrodes adjacent to the first busbar and that connects the first busbar to the corresponding one of the bar electrodes, and
• a second connection portion that is interposed between and connects adjacent bar electrodes, among the bar electrodes, to each other, and
• wherein at least some of the multiple connection portions are disposed in a Y shape that opens toward a side where the second busbar is located.

An acoustic wave device comprising:

• a piezoelectric body having a first surface;
• and
• an IDT electrode positioned on the first surface,
• wherein the IDT electrode includes
• a first busbar,
• a second busbar facing the first busbar,
• multiple first electrode fingers electrically connected to the first busbar,
• multiple second electrode fingers electrically connected to the second busbar and arranged in an alternating manner with the multiple first electrode fingers in an acoustic wave propagation direction,
• multiple bar electrodes interposed between the first busbar and the multiple first electrode fingers, and extending parallel to the first busbar and parallel to each other, and
• multiple connection portions including
• a first connection portion that is interposed between the first busbar and a corresponding one of the bar electrodes adjacent to the first busbar and that connects the first busbar to the corresponding one of the bar electrodes, and
• a second connection portion that is interposed between and connects adjacent bar electrodes, among the bar electrodes, to each other, and
• at least some of edges of the multiple connection portions positioned on one side in the acoustic wave propagation direction are located on a same straight line inclined with respect to the extension direction or on a same curved line.