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    • 3. 发明申请
    • ACOUSTIC WAVE FILTER
    • 声波滤波器
    • US20120105298A1
    • 2012-05-03
    • US13344274
    • 2012-01-05
    • Kazunori InoueTakashi MatsudaMichio Miura
    • Kazunori InoueTakashi MatsudaMichio Miura
    • H03H9/64H01Q1/50H03H9/72
    • H03H9/02992H03H9/02952H03H9/6483H03H9/725
    • A configuration that reduces a parasitic capacitance between wires is achieved at a low cost. Disclosed is an acoustic wave filter provided with a piezoelectric substrate 1, resonators 2a and 2b that include a comb-shaped electrode formed on the piezoelectric substrate 1, a wiring portion 3 that is connected to the comb-shaped electrode, and a dielectric layer 4 formed to cover the comb-shaped electrode. The wiring portion 3 is provided with a lower layer wiring portion 3d that is disposed in the same layer as the comb-shaped electrode and an upper layer wiring portion 3e that is disposed on the lower layer wiring portion 3d. The upper layer wiring portion 3e includes a region that has a wider electrode width than the electrode width of the lower layer wiring portion 3d.
    • 以低成本实现降低电线之间的寄生电容的结构。 公开了一种设置有压电基板1的谐波滤波器,包括形成在压电基板1上的梳状电极的谐振器2a和2b,连接到梳状电极的布线部分3和介电层4 形成为覆盖梳状电极。 布线部分3设置有与梳状电极相同的层中的下层布线部分3d和布置在下层布线部分3d上的上层布线部分3e。 上层布线部分3e包括具有比下层布线部分3d的电极宽度更宽的电极宽度的区域。
    • 6. 发明授权
    • Method of manufacturing an acoustic wave device
    • 制造声波装置的方法
    • US07721411B2
    • 2010-05-25
    • US11987175
    • 2007-11-28
    • Shunichi AikawaJyouji KimuraKeiji TsudaKazunori InoueTakashi Matsuda
    • Shunichi AikawaJyouji KimuraKeiji TsudaKazunori InoueTakashi Matsuda
    • H04R31/00
    • H03H3/08H03H9/1092Y10T29/42Y10T29/49005Y10T29/4908Y10T29/49798
    • A method of manufacturing an acoustic wave device includes: forming a conductive pattern on a wafer made of a piezoelectric substrate having an acoustic wave element, the conductive pattern including a first conductive pattern being continuously formed on a cutting region for individuating the wafer, a second conductive pattern being formed on an electrode region where a plated electrode is to be formed and being connected to the acoustic wave element and a third conductive pattern connecting the first conductive pattern and the second pattern; forming an insulating layer on the wafer so as to have an opening on the second conductive pattern; forming the plated electrode on the second conductive pattern by providing an electrical current to the second conductive pattern via the first conductive pattern and the third conductive pattern; and cutting off and individuating the wafer along the cutting region.
    • 一种制造声波器件的方法包括:在由具有声波元件的压电基片制成的晶片上形成导电图案,所述导电图案包括连续形成在用于个别晶片的切割区域上的第一导电图案,第二 导电图案形成在要形成镀覆电极的电极区域上,并连接到声波元件;连接第一导电图案和第二图案的第三导电图案; 在所述晶片上形成绝缘层,以在所述第二导电图案上具有开口; 通过经由第一导电图案和第三导电图案向第二导电图案提供电流,在第二导电图案上形成电镀电极; 并沿着切割区域切割和分离晶片。