利索-全球专利检索

  1. 登录
  2. 注册
发明授权
US06933810B2 Surface acoustic wave device with lithium tantalate on a sapphire substrate and filter using the same 失效
在蓝宝石衬底上使用钽酸锂的表面声波器件和使用其的滤波器

Surface acoustic wave device with lithium tantalate on a sapphire substrate and filter using the same
摘要：
A surface acoustic wave device includes a piezoelectric substrate having a first surface on which comb-like electrodes are formed, and a second surface, and a support substrate joined to the second surface of the piezoelectric substrate. The piezoelectric substrate is made of lithium, tantalate, and the support substrate is made of sapphire. The following expressions being satisfied: T/t 10  (2) where T is a thickness of the piezoelectric substrate, t is a thickness of the support substrate, and λ is a wavelength of a surface acoustic filter, propagated along the first surface of the piezoelectric substrate.
摘要（中）：

表面声波装置包括具有形成有梳状电极的第一表面和第二表面的压电基板和连接到压电基板的第二表面的支撑基板。 压电基板由钽酸锂制成，支撑基板由蓝宝石制成。 满足以下表达式：<？in-line-formula description =“In-line Formulas”end =“lead”？> T / t <1/3（1）<？in-line-formula description =“In- 行公式“end =”tail“？> <？in-line-formula description =”In-line Formulas“end =”lead“？> T / lambda> 10（2）<？in-line-formula description = 在线公式“end =”tail“？>其中T是压电基板的厚度，t是支撑基板的厚度，λ是表面声滤波器的波长，沿着压电的第一表面传播 基质。

公开/授权文献
信息查询
Espacenet
0/0