WO2022141827A1 - 一种骨传导传声装置 - Google Patents
一种骨传导传声装置 Download PDFInfo
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- WO2022141827A1 WO2022141827A1 PCT/CN2021/082492 CN2021082492W WO2022141827A1 WO 2022141827 A1 WO2022141827 A1 WO 2022141827A1 CN 2021082492 W CN2021082492 W CN 2021082492W WO 2022141827 A1 WO2022141827 A1 WO 2022141827A1
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- transmission device
- bone conduction
- sound transmission
- conduction sound
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Abstract
Description
Claims (66)
- 一种骨传导传声装置,其特征在于,包括:由振动单元和声学换能单元形成的叠层结构;基体结构,被配置为承载所述叠层结构,所述叠层结构的至少一侧与所述基体结构通过物理方式进行连接;所述基体结构基于外部振动信号产生振动,所述振动单元响应于所述基体结构的振动发生形变;所述声学换能单元基于所述振动单元的形变产生电信号。
- 根据权利要求1所述的骨传导传声装置,其特征在于,所述骨传导传声装置的谐振频率为1kHz-5kHz。
- 根据权利要求2所述的骨传导传声装置,其特征在于,所述骨传导传声装置的谐振频率为2.5kHz-4.5kHz。
- 根据权利要求3所述的骨传导传声装置,其特征在于,所述骨传导传声装置的谐振频率为2.5KHz-3.5kHz。
- 根据权利要求1所述的骨传导传声装置,其特征在于,所述骨传导传声装置的谐振频率与所述振动单元的刚度成正相关的关系。
- 根据权利要求1所述的骨传导传声装置,其特征在于,所述骨传导传声装置的谐振频率与所述叠层结构的质量成负相关的关系。
- 根据权利要求1-6中任一项所述的骨传导传声装置,其特征在于,所述振动单元包括至少一个支撑臂和质量元件,所述质量元件通过所述至少一个支撑臂与所述基体结构连接。
- 根据权利要求7所述的骨传导传声装置,其特征在于,所述声学换能单元位于所述至少一个支撑臂的上表面、下表面或内部。
- 根据权利要求7所述的骨传导传声装置,其特征在于,所述声学换能单元包括由上至下依次设置的第一电极层、第一压电层和第二电极层,所述第一电极层或所述第二电极层与所述至少一个支撑臂的上表面或下表面连接。
- 根据权利要求9所述的骨传导传声装置,其特征在于,所述质量元件位于所述第一电极层或所述第二电极层的上表面或下表面。
- 根据权利要求9所述的骨传导传声装置,其特征在于,所述第一电极层、所述第一压电层和/或所述第二电极层的面积不大于所述支撑臂的面积,所述第一电极层、所述第一压电层和/或第二电极层的局部或全部覆盖所述至少一个支撑臂的上表面或下表面。
- 根据权利要求9所述的骨传导传声装置,其特征在于,所述第一电极层的面积不大于所述第一压电层的面积,所述第一电极层的全部区域位于所述第一压电层表面。
- 根据权利要求9所述的骨传导传声装置,其特征在于,所述声学换能单元的所述第一电极层、所述第一压电层、所述第二电极层位于所述支撑臂与所述质量元件的连接的一端和/或所述支撑臂与所述基体结构连接的一端。
- 根据权利要求9所述的骨传导传声装置,其特征在于,所述声学换能单元包括至少一个弹性层,所述至少一个弹性层位于所述第一电极层或所述第二电极层的上表面和/或下表面。
- 根据权利要求14所述的骨传导传声装置,其特征在于,所述声学换能单元还包括第一种子层,所述第一种子层设于所述弹性层与所述第一电极层之间或设于所述弹性层与所述第二电极层之间。
- 根据权利要求14所述的骨传导传声装置,其特征在于,所述声学换能单元还包括至少一个绑线电极层,所述绑线电极层设于所述基体结构上,所述绑线电极层用于从所述基体结构引出电信号。
- 根据权利要求9所述的骨传导传声装置,其特征在于,所述骨传导传声装置上形成有中性层,所述中性层在所述支撑臂发生形变时形变应力为零;所述中性层与所述第一压电层在厚度方向上不重合。
- 根据权利要求9所述的骨传导传声装置,其特征在于,所述第一电极层的厚度为80nm-250nm,和/或所述第二电极层的厚度为80nm-250nm。
- 根据权利要求9所述的骨传导传声装置,其特征在于,所述第一压电层的厚度为0.8um-2um。
- 根据权利要求14所述的骨传导传声装置,其特征在于,所述弹性层的厚度为0.5um-10um。
- 根据权利要求15所述的骨传导传声装置,其特征在于,所述第一种子层的厚度为10nm-120nm。
- 根据权利要求14所述的骨传导传声装置,其特征在于,所述弹性层的厚度是所述第一压电层的厚度的1-6倍。
- 根据权利要求7所述的骨传导传声装置,其特征在于,所述质量元件的厚度为1um-400um。
- 根据权利要求7所述的骨传导传声装置,其特征在于,所述质量元件包括由下至上依次设置的基底层、第三电极层、第二压电层以及第四电极层。
- 根据权利要求24所述的骨传导传声装置,其特征在于,所述质量元件还包括设于所述基底层与所述第三电极层之间的第二种子层。
- 根据权利要求24所述的骨传导传声装置,其特征在于,所述基底层的厚度为20um-400um。
- 根据权利要求1所述的骨传导传声装置,其特征在于,所述骨传导传声装置的电信号的强度与噪声的强度的比值为最大化电信号与噪声的强度的比值的50%-100%。
- 根据权利要求7所述的骨传导传声装置,其特征在于,所述声学换能单元包括第一电极层、第一压电层和第二电极层,所述第一电极层、所述第一压电层以及所述第二电极层三者的重叠区域的面积与所述支撑臂的垂直于厚度方向的截面的面积的比值为5%-40%。
- 根据权利要求9所述的骨传导传声装置,其特征在于,所述第一电极层或所述第二电极层上设有电极绝缘沟道,所述电极绝缘沟道用于将所述第一电极层或所述第二电极层分隔为两个及以上电极区域。
- 根据权利要求29所述的骨传导传声装置,其特征在于,所述电极绝缘沟道的宽度为小于等于20um。
- 根据权利要求9所述的骨传导传声装置,其特征在于,所述第一电极层或所述第二电极层上具有电极引线,所述电极引线用于将所述电极区域与所述基体相连。
- 根据权利要求31所述的骨传导传声装置,其特征在于,所述电极引线的宽度为小于等于20um。
- 根据权利要求9所述的骨传导传声装置,其特征在于,所述第一电极层、所述第一压电层以及所述第二电极层三者的重叠区域朝向所述质量元件延伸而形成延伸区域,所述延伸区域位于所述质量元件的上表面或下表面。
- 根据权利要求33所述的骨传导传声装置,其特征在于,所述延伸区域在垂直于厚度方向的平面上的宽度为支撑臂与质量元件的连接部位在垂直于厚度方向的平面上的宽度的1.2倍-2倍。
- 根据权利要求7所述的骨传导传声装置,其特征在于,所述支撑臂的数量是两个以上,所述两个以上支撑臂围绕所述质量元件设置。
- 根据权利要求7所述的骨传导传声装置,其特征在于,所述至少一个支撑臂的垂直于厚度方向的截面的形状为多边形。
- 根据权利要求36所述的骨传导传声装置,其特征在于,所述多边形的边长为100~600um。
- 根据权利要求36所述的骨传导传声装置,其特征在于,所述至少一个支撑臂的垂直于厚度方向的截面的形状为矩形或梯形。
- 根据权利要求7所述的骨传导传声装置,其特征在于,所述质量元件的垂直于厚度方向的截面为多边形,所述支撑臂的数量与所述多边形的边数相对应。
- 根据权利要求38所述的骨传导传声装置,其特征在于,当所述支撑臂的垂直于厚度方向的截面的形状为矩形时,所述支撑臂的长度是100um~500um,所述支撑臂的宽度是150um~400um。
- 根据权利要求38所述的骨传导传声装置,其特征在于,当所述支撑臂的垂直于厚度方向的截面的形状为梯形;所述梯形的高为150um~600um,所述梯形的长边的长度为300um~600um;所述梯形的短边的长度为100um~400um。
- 根据权利要求7所述的骨传导传声装置,其特征在于,所述支撑臂包括第一条形部和第二条形部;所述第一条形部的一端与所述质量元件相连,而其另一端与所述第二条形部的一端相连;所述第二条形部的另一端与所述基体相连。
- 根据权利要求42所述的骨传导传声装置,其特征在于,所述第一条形部的长度为20um~200um;所述第一条形部的长宽为50um~400um。
- 根据权利要求42所述的骨传导传声装置,其特征在于,所述第二条形部的长度为500um~1300um;所述第二条形部的长度为50um~400um。
- 根据权利要求43所述的骨传导传声装置,其特征在于,当所述第一条形部与所述质量元件的连接处位于所述质量元件的侧边的端部时;所述第一条形部宽度为50um~300um,所述第一条形部的长度为20um~200um。
- 根据权利要求44所述的骨传导传声装置,其特征在于,当所述第一条形部与所述质量元件的连接处位于所述质量元件的侧边的端部时;所述第二条形部的宽度为50um~300um;所述第二条形部的长度为800um~1300um。
- 根据权利要求43所述的骨传导传声装置,其特征在于,当所述第一条形部与所述质量元件的连接处位于所述质量元件的侧边的中点处时;所述第一条形部的宽度为100um~400um;所述第一条形部的长度为20um~200um。
- 根据权利要求44所述的骨传导传声装置,其特征在于,当所述第一条形部与所述质量元件的连接处位于所述质量元件的侧边的中点处时;所述第二条形部的宽度为100um~400um;所述第二条形部的长度为500um~1000um。
- 根据权利要求42所述的骨传导传声装置,其特征在于,所述质量元件的垂直于厚度方向的截面为矩形,所述第一条形部与所述第二条形部垂直。
- 根据权利要求7所述的骨传导传声装置,其特征在于,所述支撑臂包括第一条形部、第二条形部和第三条形部;所述第一条形部的一端与所述质量元件相连,而其另一端与所述第二条形部的一端相连;所述第二条形部的另一端与所述第三条形部的一端相连;所述第三条形部的另一端与所述基体相连。
- 根据权利要求50所述的骨传导传声装置,其特征在于,所述第一条形部的长度为20um~200um;所述第一条形部的长宽为50um~300um。
- 根据权利要求50所述的骨传导传声装置,其特征在于,所述第二条形部的长度为500um~1200um;所述第二条形部的长度为50um~300um。
- 根据权利要求50所述的骨传导传声装置,其特征在于,所述第三条形部的长度为800um~1300um;所述第三条形部的宽度为50um~300um。
- 根据权利要求51所述的骨传导传声装置,其特征在于,当所述第一条形部与所述质量元件的连接处位于所述质量元件的侧边的端部时,所述第一条形部的宽度为50um~300um;所述第一条形部的长度为20um~200um。
- 根据权利要求52所述的骨传导传声装置,其特征在于,当所述第一条形部与所述质量元件的连接处位于所述质量元件的侧边的端部时,所述第二条形部的宽度为50um~300um;所述第二条形部的长度为600um~1200um。
- 根据权利要求53所述的骨传导传声装置,其特征在于,当所述第一条形部与所述质量元件的连接处位于所述质量元件的侧边的端部时,所述第三条形部的宽度为50um~300um;所述第三条形部的长度为800um~1300um。
- 根据权利要求51所述的骨传导传声装置,其特征在于,当所述第一条形部与所述质量元件的连接处位于所述质量元件的侧边的中点时,所述第一条形部的宽度为50um~300um;所述第一条形部的长度为20um~200um。
- 根据权利要求52所述的骨传导传声装置,其特征在于,当所述第一条形部与所述质量元件的连接处位于所述质量元件的侧边的中点时,所述第二条形部的宽度为50um~300um;所述第二条形部的长度为500um~1000um。
- 根据权利要求53所述的骨传导传声装置,其特征在于,当所述第一条形部与所述质量元件的连接处位于所述质量元件的侧边的中点时,所述第三条形部的宽度为50um~300um;所述第三条形部的长度为800um~1300um。
- 根据权利要求50所述的骨传导传声装置,其特征在于,所述质量元件的垂直于厚度方向的截面为矩形,所述第二条形部与所述第一条形部垂直,所述第二条形部与所述第三条形部垂直。
- 根据权利要求7所述的骨传导传声装置,其特征在于,所述基体结构包括具有中空的内腔的框架结构体;所述支撑臂和所述质量元件均设置于所述框架结构体的内腔中。
- 根据权利要求61所述的骨传导传声装置,其特征在于,所述质量元件的形状与所述内腔的形状相对应。
- 根据权利要求7所述的骨传导传声装置,其特征在于,所述支撑臂和所述声学换能单元的厚度总和小于所述质量元件的厚度。
- 根据权利要求7所述的骨传导传声装置,其特征在于,所述支撑臂和所述声学换能单元的厚度总和大于或等于所述质量元件的厚度。
- 根据权利要求7所述的骨传导传声装置,其特征在于,还包括限位结构,所述限位结构位于所述基体结构的内腔中,其中,所述限位结构的与所述基体结构连接,所述限位结构位于所述质量元件的上方和/或下方。
- 根据权利要求1所述的骨传导传声装置,其特征在于,还包括至少一个阻尼层,所述至少一个阻尼层覆盖于所述叠层结构的上表面、下表面和/或内部。
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EP4187924A1 (en) | 2023-05-31 |
EP4203508A4 (en) | 2024-04-10 |
EP4184946A4 (en) | 2024-02-21 |
CN116349249A (zh) | 2023-06-27 |
CN116325802A (zh) | 2023-06-23 |
KR20230060523A (ko) | 2023-05-04 |
KR20230084268A (ko) | 2023-06-12 |
JP2023550132A (ja) | 2023-11-30 |
CN116803102A (zh) | 2023-09-22 |
EP4203508A1 (en) | 2023-06-28 |
JP2023542396A (ja) | 2023-10-06 |
WO2022141828A1 (zh) | 2022-07-07 |
EP4184946A1 (en) | 2023-05-24 |
WO2022141585A1 (zh) | 2022-07-07 |
CN114697838A (zh) | 2022-07-01 |
US20230188911A1 (en) | 2023-06-15 |
EP4187924A4 (en) | 2024-03-20 |
CN114697837A (zh) | 2022-07-01 |
JP2023543513A (ja) | 2023-10-16 |
KR20230066092A (ko) | 2023-05-12 |
US20230217163A1 (en) | 2023-07-06 |
US20230247352A1 (en) | 2023-08-03 |
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