Sound absorbing material and method of production therefor
    1.
    发明授权
    Sound absorbing material and method of production therefor 失效
    吸声材料及其生产方法

    公开(公告)号:US5820975A

    公开(公告)日:1998-10-13

    申请号:US725680

    申请日:1996-10-02

    摘要: A sound absorbing material which comprises a base layer 1 having a porosity of 5 to 50% by volume and a decorative layer 3 having a porosity of 5 to 50% by volume integrally, and which is obtained by sprinkling inorganic particles 4 containing colored particles in an amount of at least 1% by volume which are coated with a weather-resistant transparent resin so as to form a first particle layer which is to form the decorative layer 3 in the sound absorbing material, sprinkling uncolored inorganic lightweight particles 2 which are coated with a thermosetting resin on the first particle layer so as to form a second particle layer which is to form the base layer 1 in the sound absorbing material, and carrying out thermal compression integral molding of the first particle layer and the second particle layer simultaneously, is lightweight and inexpensive, and is provided with an attractive external stone-grain-like appearance, without impairing the sound absorbing ability of the material. In addition, by placing a reinforcing layer material on the top surface, bottom surface, or both surfaces of the second particle layer, and carrying out thermal compression integral molding of the first particle layer, the second particle layer, and the reinforcing layer material(s) simultaneously, it is possible to provide a sound absorbing material which is provided with rigidity to enable the material to be free-standing, without impairing the above advantages and the sound absorbing ability of the material.

    摘要翻译: 一种吸音材料,其特征在于,其具有孔体积为5〜50体积%的基材1和整体为5〜50体积%的孔隙率的装饰层3,通过将含有着色颗粒的无机粒子4喷洒而得到 涂覆有耐候性透明树脂的至少1体积%的量,以形成在吸音材料中形成装饰层3的第一颗粒层,喷涂涂覆的未着色的无机轻质颗粒2 在第一颗粒层上具有热固性树脂,以形成在吸音材料中形成基底层1的第二颗粒层,同时进行第一颗粒层和第二颗粒层的热压缩一体成型, 重量轻,价格便宜,并且具有吸引力的外部石纹状外观,而不损害材料的吸音能力。 此外,通过在第二颗粒层的顶表面,底面或两个表面上放置增强层材料,并且进行第一颗粒层,第二颗粒层和增强层材料的热压整体成型 同时,可以提供具有刚性的吸声材料,以使材料能够自立,而不会损害材料的上述优点和吸声能力。

    Diaphragm for speaker and manufacturing method therefor
    2.
    发明授权
    Diaphragm for speaker and manufacturing method therefor 有权
    扬声器隔膜及其制造方法

    公开(公告)号:US07775319B2

    公开(公告)日:2010-08-17

    申请号:US11767249

    申请日:2007-06-22

    IPC分类号: G10K13/00 H04R1/00 H04R7/00

    摘要: A diaphragm for use in a speaker is manufactured using a plurality of thin wooden boards having flat rectangular shapes. The thin wooden boards are impregnated with a resin; then, a plurality of cutouts, which are elongated along wooden fiber directions or which are elongated in directions crossing wooden fiber directions, are formed in the thin wooden boards. Instead of the cutouts, it is possible to form a plurality of folded portions elongated in directions crossing wooden fiber directions. The thin wooden boards are integrally laminated together in such a way that the wooden fiber directions thereof mutually cross with a prescribed angle therebetween. The thin wooden boards integrally laminated together are subjected to thermal pressing so as to form a wooden vibrator serving as the diaphragm. Thus, it is possible to easily produce the diaphragm having a high strength and superior acoustic characteristics without causing defects.

    摘要翻译: 使用多个扁平矩形薄板制造用于扬声器的隔膜。 薄木板用树脂浸渍; 然后,在薄木板上形成多个沿着木纤维方向伸长或沿木纤维方向延伸的切口。 代替切口,可以形成多个沿木纤维方向交叉的方向伸长的折叠部分。 薄木板以这样的方式被一体地层叠在一起,使得其木纤维方向在其间以规定的角度相互交叉。 整体层叠在一起的薄木板经受热压,以形成用作隔膜的木制振动器。 因此,可以容易地制造具有高强度和优异的声学特性而不引起缺陷的隔膜。

    Surface acoustic wave device
    3.
    发明授权
    Surface acoustic wave device 失效
    表面声波装置

    公开(公告)号:US06538359B1

    公开(公告)日:2003-03-25

    申请号:US09531353

    申请日:2000-03-20

    IPC分类号: H01L4104

    CPC分类号: H03H9/02574 H03H9/02984

    摘要: A surface acoustic wave device (e.g., filter or convolver) is designed to increase an electromechanical coupling factor K2 and is basically configured by a substrate, a buffer layer, a piezoelectric layer and an electrode layer. Herein, the substrate is made of a bulk material (e.g., SrTiO3), which allows growth of a perovskite compound crystal being expressed by a general chemical formula of SrZO3 (where Z denotes an element such as Zr and Sn whose valence is 4). The buffer layer is formed on the substrate and is made of the perovskite compound crystal (e.g., SrZrO3, SrSnO3), which has good lattice matching with KNbO3. The piezoelectric layer is made of a KNbO3 single crystal and is formed on the buffer layer with a thickness of 500 nm or so. The electrode layer is formed on or below the piezoelectric layer. An interdigital transducer consisting of input and output electrodes is formed by patterning using photolithography technique being effected on the electrode layer, which is made of a metal material (e.g., Al). In addition, it is possible to form a temperature stabilization layer between the piezoelectric layer and electrode layer. The temperature stabilization layer is made of a material (SiO2) having a temperature coefficient reverse to a temperature coefficient of the piezoelectric layer so as to ease distortion being caused to occur due to differences in thermal expansion between the piezoelectric layer and electrode layer. Incidentally, the temperature stabilization layer has a prescribed thickness, which is approximately 1000 nm.

    摘要翻译: 声表面波装置(例如滤波器或卷积器)被设计成增加机电耦合系数K2,并且基本上由衬底,缓冲层,压电层和电极层构成。 这里,基板由体积材料(例如SrTiO 3)制成,其允许通过SrZO3的一般化学式(其中Z表示诸如Zr的元素,且其价数为4的Sn)表示的钙钛矿化合物晶体的生长。 缓冲层形成在基板上,并且由与KNbO 3具有良好晶格匹配的钙钛矿复合晶体(例如,SrZrO 3,SrSnO 3)制成。 压电层由KNbO3单晶制成,形成在缓冲层上,厚度为500nm左右。 电极层形成在压电层上或下方。 由输入和输出电极构成的叉指式换能器通过使用由金属材料(例如Al)制成的电极层上进行的光刻技术进行图案化而形成。 此外,可以在压电层和电极层之间形成温度稳定层。 温度稳定层由具有与压电层的温度系数相反的温度系数的材料(SiO 2)制成,以便由于压电层和电极层之间的热膨胀差异而容易发生变形。 另外,温度稳定层的规定厚度为约1000nm。

    Liquid crystal display having an alignment layer in the form of a porous
alumina layer
    4.
    发明授权
    Liquid crystal display having an alignment layer in the form of a porous alumina layer 失效
    具有多孔氧化铝层形式的取向层的液晶显示器

    公开(公告)号:US5054889A

    公开(公告)日:1991-10-08

    申请号:US477229

    申请日:1990-02-08

    IPC分类号: G02F1/1337

    CPC分类号: G02F1/1337

    摘要: In construction of a liquid crystal display including an alignment film and generally used for video display panels such as television sets, the orientation wafer is given in the form of a porous alumina layer. Substantially vertical molecular orientation is resulted from penetration of liquid crystal molecules into pores in the alignment film. Optical application of rubbing process in production enables free adjustment of the value of pretilt angle. Good reproduction and stability is assured even in the case of large fields of vision.

    摘要翻译: 在包括取向膜的液晶显示器的构造中,通常用于诸如电视机的视频显示面板,定向晶片以多孔氧化铝层的形式给出。 基本垂直的分子取向是由于液晶分子渗透到取向膜中的孔中。 摩擦过程的光学应用在生产中可以自由调节预倾角的值。 即使在大视野的情况下也能保证良好的繁殖和稳定性。