摘要:
Disclosed herein is a ZnO-based varistor composition including zinc oxide (ZnO) as a main component and a calcium (Ca)-containing compound as an accessory component. The varistor composition provides excellent electrostatic discharge (ESD) characteristics because it has excellent physical properties, such as a nonlinear coefficient, a clamping voltage ratio, a surge absorbance and the like, and, particularly, does not include Bi2O3. Further, the varistor composition provides high work safety because it does not include Sb2O3 that is regulated for environmental purposes. Further, the varistor composition can reduce the manufacturing cost of a varistor because it does not Pr-based components that require high-temperature sintering and increase the manufacturing cost of a varistor. Particularly, the varistor composition has a low clamping voltage as well as a low capacitance.
摘要翻译:本发明公开了以氧化锌(ZnO)为主要成分和含钙(Ca)的化合物作为辅助成分的ZnO系非线性电阻组合物。 由于具有优异的物理性能,例如非线性系数,钳位电压比,浪涌吸光度等,所以非线性电阻组合物提供优异的静电放电(ESD)特性,特别是不包括Bi 2 O 3。 此外,可变电阻组合物提供高的工作安全性,因为它不包括被调节用于环境目的的Sb 2 O 3。 此外,由于不具有需要高温烧结的基于Pr的部件并增加压敏电阻的制造成本,所以可变压敏电阻组合物可以降低变阻器的制造成本。 特别地,压敏电阻组合物具有低钳位电压以及低电容。
摘要:
A multilayer chip capacitor, and a method for manufacturing the same are provided. The capacitor includes a capacitor body having a plurality of dielectric layers stacked therein, a plurality of first and second internal electrodes formed on the dielectric layers, each of the internal electrodes including a main electrode portion and a lead portion, chip-protecting side members formed on both sides of the capacitor body to contact both sides of the first and second internal electrodes, and a pair of external electrodes formed on the outer surface of the capacitor body. The width of the main electrode portion is the same as that of the dielectric layers, and the width of the lead portion is smaller than that of the dielectric layers.
摘要:
The present invention relates to a cosmetic applicator. The cosmetic applicator comprises a rod and a brush. The applicator is formed with a fixing portion pressed to be flat at a lower end of the rod into which the brush is fixedly inserted. Since the brush has a flat face defined by the fixing portion, a region that requires delicate operation can be easily cosmeticized. Further, even when the brush is caused to enter and be withdrawn from a container with a small mouth, it is possible to prevent the brush from being curved outward or bristles of the brush from being entangled. Moreover, since the fixing portion is formed in the rod itself, there is no need for an additional means for making the brush in a flattened shape. Thus, the number of components for the cosmetic applicator can be reduced while an effect of application of cosmetics is further improved. Accordingly, production costs of the cosmetic applicator can be lowered and productivity thereof can also be enhanced.
摘要:
A printed circuit board material for embedded passive devices, which has excellent electromagnetic properties and reliability is provided. The invention provides a printed circuit board material comprises: a conductive copper foil layer; a resin bonding layer formed on the conductive layer and including above 70-100 vol % of resin and 0-30 vol % of filler; and a functional layer formed on the resin bonding layer and including resin and filler. The printed circuit board material has the resin bonding layer interposed between the copper foil layer and the functional layer. Thus, even when the content of fillers in the functional layer is increased, the adhesion strength between the conductive layer and the functional layer is ensured without deteriorating the properties of the functional layer, such as dielectric and magnetic properties.
摘要:
A method for fabricating a field emitter electrode includes the steps of: providing an electrolytic solution containing metal ions to an electrolytic bath; providing carbon nanotubes and a cationic dispersant for preventing the agglomeration of the carbon nanotubes to the electrolytic solution; and applying a predetermined voltage to a cathode drum and an insoluble anodic compartment, both of which are immersed in the electrolytic solution, and forming a metal film containing the carbon nanotubes along the surface of the cathode drum.
摘要:
A glass frit for dielectrics, a dielectric ceramic composition, a multilayer ceramic capacitor, and a method for manufacturing the same are disclosed. The glass frit has a composition represented by the formula aSiO2-bB2O3-cLi2O-dK2O-eCaO-fAl2O3-gTiO2-hZrO2, wherein the ratio of components satisfies the conditions of 20≦a≦35, 20≦b≦35, 20≦c≦30, 3≦d≦5, 2≦e≦12, 2≦f≦10, 1≦g≦12 and 1≦h≦7 in terms of mol % where a+b+c+d+e+f+g+h=100. The dielectric ceramic composition comprises 100 parts by weight of (Ca1-xRx)(Zr1-yTiy)O3, 0.5˜2.5 parts by weight of the glass frit, and 1.0˜5.0 parts by weight of a Mn compound. Additionally, the multilayer ceramic capacitor, and the method for manufacturing the same also use the glass frit having the above composition. The ratio of tetracoordinate boron to tricoordinate boron is increased in a lithium borosilicate glass, thereby enhancing structural property, and the components of Al2O3, TiO2 and ZrO2, enhance acid resistance.
摘要翻译:公开了一种电介质玻璃料,介电陶瓷组合物,多层陶瓷电容器及其制造方法。 所述玻璃料具有式aSiO 2-b B 2 O 3 -cLi 2 O 2 O- dK 2 O-eCaO-fAl 2 O 3 -gTiO 2 -hZrO 2 SUB >,其中组分的比例满足20≤a≤35,20≤b≤35,20,20≤c≤30,3≤d≤5,2=e≤12的条件 其中a + b + c + d + e + f + g + h = 100,以摩尔%表示,2 <= f <= 10,1 <= g <= 12和1 <= h <= 7。 电介质陶瓷组合物包含100重量份的(Ca 1-x N R x x)(Zr 1-y)Ti y / 3> O 3,0.5〜2.5重量份的玻璃料和1.0〜5.0重量份的Mn化合物。 此外,多层陶瓷电容器及其制造方法也使用具有上述组成的玻璃料。 在硼硅酸锂玻璃中四配位硼与三配位硼的比例增加,从而提高结构性能,并且将Al 2 N 3 O 3,TiO 2, / SUB和ZrO 2,提高耐酸性。
摘要:
Disclosed herein is a method for fabricating a field emitter electrode. The method comprises the steps of: providing an electrolytic solution containing metal ions to an electrolytic bath; providing carbon nanotubes and a cationic dispersant for preventing the agglomeration of the carbon nanotubes to the electrolytic solution; and applying a predetermined voltage to a cathode drum and an insoluble anodic compartment, both of which are immersed in the electrolytic solution, and forming a metal film containing the carbon nanotubes along the surface of the cathode drum.
摘要:
A method for manufacturing a multilayer chip capacitor includes: forming screen patterns on mother green sheets such that a widthwise margin is not formed on the mother green sheets, the screen patterns are spaced apart from each other in the width direction and the longitudinal direction, and a width of each screen pattern is greater than a spacing between the adjacent screen patterns; forming internal electrode patterns on the mother green sheets; forming a stack of the mother green sheets; forming a capacitor body having internal electrodes by cutting the stack of the mother green sheets along cutting lines arranged in the width direction and the longitudinal direction; forming chip-protecting side members on both sides of the capacitor body such that the chip-protecting side members contact both sides of the internal electrodes, respectively; and forming a pair of terminal electrodes on the outer surface of the capacitor body.
摘要:
Disclosed is a composition for forming a dielectric, which is applied to an embedded capacitor with a high dielectric constant, a capacitor produced using the composition, and a PCB provided with the capacitor. The composition includes 40 to 99 vol % of thermoplastic or thermosetting resin, and 1 to 60 vol % of semiconductive filler. Alternatively, the composition includes 40 to 95 vol % of thermoplastic or thermosetting resin, and 5 to 60 vol % of semiconductive ferroelectric substance. Furthermore, the present invention provides the capacitor, produced using the composition, and the PCB provided with the capacitor. Therefore, the dielectric, which is produced using the composition including the semiconductive filler or semiconductive ferroelectric substance, is advantageous in that the dielectric constant is high and a dielectric loss is low. The dielectric is usefully applied to produce an embedded capacitor with the high dielectric constant and the PCB provided with the embedded capacitor.
摘要:
Disclosed herein is a method of manufacturing a multilayered ceramic capacitor by a spin coating process, and a multilayered ceramic capacitor obtained by the above method. The method of the current invention provides a plurality of dielectric layers formed by spin coating, in which the process of coating the dielectric layer and the process of printing the inner electrode can be provided as a single process. Therefore, the thickness of the dielectric layer is easily controlled while the dielectric layer is formed to be thin. Further, since the dielectric layers and the inner electrodes are formed successively, the processes of separating and layering the dielectric layers, and the process of compressing the ceramic multilayered body can be omitted. Thereby, the ceramic multilayered body need not be compressed, and thus, a pillowing phenomenon does not occur in the multilayered ceramic capacitor.