Acoustic vibration plate, manufacturing method thereof and acoustic equipment

The invention provides an acoustic diaphragm having characteristics required for a vibrating portion and a dangling portion. The acoustic diaphragm is characterized in that a vibrating part (11) and a dangling edge part (12) located on the outer periphery of the vibrating part are each made of a thermoplastic liquid crystal polymer having the same composition, and the elastic modulus (Ed) of the vibrating part (11) and the elastic modulus (Ee) of the dangling edge part (12), which are measured by a nanoindentation method, satisfy the relationship of Ed > Ee. For example, the ratio (Ed/Ee) between the elastic modulus (Ed) of the vibrating part (11) and the elastic modulus (Ee) of the dangling edge part (12) may be 1.05-5.0. 本发明提供具备在振动部和悬边部所要求的特性的音响振动板。上述音响振动板是振动部(11)和位于该振动部的外周的悬边部(12)分别由相同组成的热塑性液晶聚合物构成的音响振动板，其中，通过纳米压痕法测定的振动部(11)的弹性模量Ed和悬边部(12)的弹性模量Ee满足Ed＞Ee的关系。例如，振动部(11)的弹性模量Ed与悬边部(12)的弹性模量Ee的比Ed/Ee可以为1.05～5.0。