摘要:
A method is disclosed for fabricating a patterned embedded capacitance layer. The method includes fabricating (1305, 1310) a ceramic oxide layer (510) overlying a conductive metal layer (515) overlying a printed circuit substrate (505), perforating (1320) the ceramic oxide layer within a region (705), and removing (1325) the ceramic oxide layer and the conductive metal layer in the region by chemical etching of the conductive metal layer. The ceramic oxide layer may be less than 1 micron thick.
摘要:
One of a plurality of capacitors embedded in a printed circuit structure includes a first electrode (415) overlaying a first substrate layer (505) of the printed circuit structure, a crystallized dielectric oxide core (405) overlaying the first electrode, a second electrode (615) overlying the crystallized dielectric oxide core, and a high temperature anti-oxidant layer (220) disposed between and contacting the crystallized dielectric oxide core and at least one of the first and second electrodes. The crystallized dielectric oxide core has a thickness that is less than 1 micron and has a capacitance density greater than 1000 pF/mm2. The material and thickness are the same for each of the plurality of capacitors. The crystallized dielectric oxide core may be isolated from crystallized dielectric oxide cores of all other capacitors of the plurality of capacitors.
摘要翻译:嵌入印刷电路结构中的多个电容器之一包括覆盖印刷电路结构的第一衬底层(505)的第一电极(415),覆盖第一电极的结晶化电介质氧化物芯(405),第二电极 615),以及设置在结晶的电介质氧化物芯和第一和第二电极中的至少一个之间并与其接触的高温抗氧化剂层(220)。 结晶的电介质氧化物芯的厚度小于1微米,电容密度大于1000pF / mm 2。 多个电容器的材料和厚度相同。 结晶的电介质氧化物芯可以与多个电容器的所有其它电容器的结晶的电介质氧化物芯隔离。
摘要:
A method is for fabricating an embedded capacitance printed circuit board assembly (400, 1100). The embedded capacitance printed circuit board assembly includes two embedded capacitance structures (110). Each capacitance structure (110) includes a crystallized dielectric oxide layer (115) sandwiched between an outer electrode layer (120) and an inner electrode layer (125) in which the two inner electrode layers are electrically connected together. A rivet via (1315) and a stacked via (1110) formed from a button via (910) and a stacked blind via (1111) may be used to electrically connect the two inner electrode layers together. A spindle via (525) may be formed through the inner and outer layers. The multi-layer printed circuit board may be formed from a capacitive laminate (100) that includes two capacitance structures.
摘要:
Fabricating (100, 1300) a printed circuit board includes fabricating patterned conductive traces (305, 310, 1410, 1415) onto a foil, laminating the patterned conductive traces to a printed circuit board substrate (405, 1505) by pressing on the foil, such that the conductive traces are pressed into a dielectric layer of the printed circuit board, and removing the foil to expose a co-planar surface of conductive trace surfaces and dielectric surfaces. Removal may be done by peeling (125) and/or etching (130, 1315).
摘要:
Fabricating (100, 1300) a printed circuit board includes fabricating patterned conductive traces (305, 310, 1410, 1415) onto a foil, laminating the patterned conductive traces to a printed circuit board substrate (405, 1505) by pressing on the foil, such that the conductive traces are pressed into a dielectric layer of the printed circuit board, and removing the foil to expose a co-planar surface of conductive trace surfaces and dielectric surfaces. Removal may be done by peeling (125) and/or etching (130, 1315).
摘要:
A dielectric circuit board foil (400, 600) includes a conductive metal foil layer (210, 660), a crystallized dielectric oxide layer (405, 655) disposed adjacent a first surface of the conductive metal foil layer, a lanthanum nickelate layer (414, 664) disposed on the crystallized dielectric oxide layer, and an electrode layer (415, 665) that is substantially made of one or more base metals disposed on the lanthanum nickelate layer. The foil (400, 600) may be adhered to a printed circuit board sub-structure (700) and used to economically fabricate a plurality of embedded capacitors, including isolated capacitors of large capacitive density (>1000 pf/mm2).
摘要翻译:电介质电路板箔(400,600)包括导电金属箔层(210,660),邻近导电金属箔层的第一表面设置的结晶介电氧化物层(405,655),镍酸镧层(414) ,664)和基本上由设置在镍酸镧层上的一种或多种贱金属制成的电极层(415,665)。 箔(400,600)可以粘附到印刷电路板子结构(700)上,并用于经济地制造多个嵌入式电容器,包括具有大电容密度(> 1000pf / mm 2)的隔离电容器, / SUP>)。
摘要:
A meso-electromechanical system (900, 1100) includes a substrate (215), a standoff (405, 1160) disposed on a surface of the substrate, a first electrostatic pattern (205, 1105, 1110, 1115, 1120) disposed on the surface of the substrate, and a glass beam (810). The glass beam (810) has a fixed region (820) attached to the standoff and has a second electrostatic pattern (815, 1205, 1210, 1215, 1220) on a cantilevered location of the glass beam. The second electrostatic pattern is substantially co-extensive with and parallel to the first electrostatic pattern. The second electrostatic pattern has a relaxed separation (925) from the first electrostatic pattern when the first and second electrostatic patterns are in a non-energized state. In some embodiments, a mirror is formed by the electrostatic materials that form the second electrostatic pattern. The glass beam may be patterned using sandblasting (140).
摘要:
A method for forming embedded capacitors on a printed circuit board is disclosed. The capacitor is formed on the printed circuit board by a depositing a first dielectric layer over one or more electrodes situated on the PCB. Another electrode is formed on top of the first dielectric layer and a second dielectric layer is deposited on top of that electrode. A third electrode is formed on top of the second dielectric layer. The two dielectric layers are abrasively delineated in a single step by a method such as sand blasting to define portions of the first and second dielectric layers to create a multilayer capacitive structure.
摘要:
A method for manufacturing a microelectronic assembly to have a resistor, and particularly a metal resistive film, with desirable processing and dimensional characteristics. The method generally entails applying a photosensitive dielectric to a substrate to form a dielectric layer. The dielectric layer is photoimaged to polymerize a first portion of the dielectric layer on a first region of the substrate, leaving the remainder of the dielectric layer unpolymerized. An electrically resistive film is then applied to the dielectric layer, and the dielectric layer is developed to remove concurrently the unpolymerized portion thereof and the portion of the resistive film overlying the unpolymerized portion, so that a portion of the resistive film remains over the second portion to form the resistor. An alternative process order is to apply the resistive film prior to exposing the dielectric layer to radiation, and then exposing the dielectric layer through the resistive film. The resistive film is preferably a multilayer film that includes an electrically resistive layer, such as NiP, NiCr or another nickel-containing alloy, and a sacrificial backing such as a layer of copper.
摘要:
High capacitance value capacitors are formed using bimetal foils of an aluminum layer attached to a copper layer. The copper side of a bimetallic copper/aluminum foil or a monometallic aluminum foil is temporarily protected using aluminum or other materials, to form a sandwich. The exposed aluminum is treated to increase the surface area of the aluminum by at least one order of magnitude, while not attacking any portion of the protected metal. When the sandwich is separated, the treated bimetal foil is formed into a capacitor, where the copper layer is one electrode of the capacitor and the treated aluminum layer is in intimate contact with a dielectric layer of the capacitor.