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    • 4. 发明公开
    • 압전 구조체, 액체 토출 헤드 및 그 제조 방법
    • 压电元件结构,液体喷射头及其制造方法
    • KR1020020066226A
    • 2002-08-14
    • KR1020020007658
    • 2002-02-09
    • 캐논 가부시끼가이샤와사 기요따까
    • 운노아끼라요네하라다까오후꾸이데쯔로마쯔다다까노리와사기요따까
    • B41J2/16
    • B41J2/1628B41J2/161B41J2/1629B41J2/1632B41J2/1646H01L41/0815H01L41/0973Y10T29/42Y10T29/49128Y10T29/4913Y10T29/49401
    • PURPOSE: To provide a highly reliable stabilized liquid ejection head having a piezoelectric element structure exhibiting excellent durability and piezoelectric characteristics and long ejection openings formed at a high density, and to provide its manufacturing method in which micromachining of semiconductor process can be employed by making thin a piezoelectric film or a diaphragm constituting a piezoelectric element. CONSTITUTION: The piezoelectric element structure 10 comprises a diaphragm 11, and a piezoelectric film 15 having upper and lower electrodes 16 and 17. The diaphragm 11 is formed of single crystal silicon or a single crystal silicon material doped with an element, e.g. boron, and has a structure sandwiched by an oxide layer 13 of SiO2, YSZ, MgO, or the like, and an oxide layer 14 of at least one material selected from SiO2, YSZ, MgO, SRO, and the like. The piezoelectric film 15 is a single orientation crystal or single crystal having one layer structure of PZT, PMN, PSN-PT, PMN-PT, or the like, or multilayer structure of different composition.
    • 目的:提供一种高可靠性稳定的液体喷射头,其具有表现出优异的耐久性和压电特性的压电元件结构,并且以高密度形成的长喷射开口,并且提供其制造方法,其中可以通过制造薄的半导体工艺来进行微加工 构成压电元件的压电膜或隔膜。 构成:压电元件结构10包括隔膜11和具有上电极16和下电极17的压电膜15.隔膜11由单晶硅或掺杂有元件的单晶硅材料形成。 并且具有由SiO 2,YSZ,MgO等的氧化物层13以及选自SiO 2,YSZ,MgO,SRO等的至少一种材料的氧化物层14夹持的结构。 压电膜15是具有PZT,PMN,PSN-PT,PMN-PT等的一层结构的单取向晶体或单晶,或者具有不同组成的多层结构。