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    • 6. 发明公开
    • Method of manufacturing an electromechanical transducer
    • Verfahren zur Herstellung eines elektromechanischen Wandlers
    • EP2572804A2
    • 2013-03-27
    • EP12006480.3
    • 2012-09-14
    • Canon Kabushiki Kaisha
    • Kato, AyakoTorashima, Kazutoshi
    • B06B1/02
    • B06B1/0292B81B3/0075B81B2201/0221B81B2203/0127B81B2203/0315B81B2203/0392H04R19/005H04R31/00
    • Provided is a method of manufacturing an electromechanical transducer having a reduced variation in a breakdown strength caused by a variation in flatness of an insulating layer. In the method of manufacturing the electromechanical transducer, a first insulating layer (2) is formed on a first substrate (1), a barrier wall (3) is formed by removing a part of the first insulating layer, and a second insulating layer (10) is formed on a region of the first substrate after the part of the first insulating layer has been removed. Next, a gap is formed by bonding a second substrate (18) on the barrier wall, and a vibration film (23) that is opposed to the second insulating layer via the gap is formed from the second substrate. In the forming of the barrier wall, a height on a gap side in a direction vertical to the first substrate becomes lower than a height of a center portion.
    • 提供一种制造机电换能器的方法,该机电换能器由绝缘层的平坦度的变化引起的击穿强度的变化减小。 在制造机电换能器的方法中,在第一基板(1)上形成第一绝缘层(2),通过去除第一绝缘层的一部分形成阻挡壁(3),以及第二绝缘层 10)在第一绝缘层的一部分被去除之后形成在第一衬底的区域上。 接下来,通过将第二基板(18)接合在阻挡壁上而形成间隙,并且从第二基板形成经由间隙与第二绝缘层相对的振动膜(23)。 在形成阻挡壁时,与第一基板垂直的方向上的间隙侧的高度比中心部的高度低。