摘要:
Disclosed is a resin composition for a printed circuit board, which includes a complex epoxy resin including a bisphenol A epoxy resin obtained by dispersing silicone elastomer particles having a core-shell structure in a diglycidyl ether of bisphenol A epoxy resin, a cresol novolac epoxy resin, and a phosphorus-based epoxy resin; a bisphenol A curing agent; a curing accelerator; and an inorganic filler. A printed circuit board using the resin composition is also provided.
摘要:
Disclosed is a resin composition for a printed circuit board, composed of a complex epoxy resin including 41˜80 wt % of a naphthalene-modified epoxy resin having an average epoxy resin equivalent of 100˜200 and 20˜59 wt % of a phosphorus-based epoxy resin having an average epoxy resin equivalent of 400˜800, a bisphenol A curing agent used in an equivalent ratio of 0.3˜1.5 with respect to a total epoxy group equivalent of the complex epoxy resin, a curing accelerator used in an amount of 0.1˜1 part by weight based on 100 parts by weight of the complex epoxy resin and an inorganic filler used in an amount of 10˜40 parts by weight based on 100 parts by weight of the complex epoxy resin. A printed circuit board using the resin composition is also provided.
摘要:
Disclosed is an insulating material for a printed circuit board, including a liquid crystal polyester resin and ceramic powder, thus exhibiting a temperature coefficient of capacitance ranging from −300 to +300 ppm/° C. in the temperature range of −55˜125° C. and a dielectric constant ranging from 5 to 40. This insulating material has superior dielectric properties, and a small change in dielectric constant depending on the change in temperature, and thus exhibits high reliability when applied to high-frequency circuits.
摘要:
Disclosed is an insulating material for a printed circuit board, including a liquid crystal polyester resin and ceramic powder, thus exhibiting a temperature coefficient of capacitance ranging from −300 to +300 ppm/° C. in the temperature range of −55˜125° C. and a dielectric constant ranging from 5 to 40. This insulating material has superior dielectric properties, and a small change in dielectric constant depending on the change in temperature, and thus exhibits high reliability when applied to high-frequency circuits.
摘要:
A capacitor embedded printed circuit board (PCB) includes a multilayer polymer capacitor layer with a plurality of polymer sheets. One or more first inner electrodes and second inner electrodes, separated by one or more of the plurality of polymer sheets, are alternately disposed to form a pair. A plurality of first extended electrodes and second extended electrodes protrude from the first inner electrodes and second inner electrodes, respectively. One or more insulating layers are laminated on one or both surfaces of the multilayer polymer capacitor. A plurality of first via holes for capacitor, and a plurality of second via holes for capacitor, penetrating the multilayer polymer capacitor layer are connected to the first extended electrodes and the second extended electrodes, respectively. The plurality of the first and second extended electrodes are alternately disposed to be opposite to each other.
摘要:
A method of manufacturing a chip capacitor according to an aspect may include: preparing a capacitor lamination including a dielectric sheet formed of a composite having ceramic powder and a polymer mixed with each other, and first and second internal electrodes formed on both surfaces of the dielectric sheet at predetermined intervals; forming covering layers formed of an insulating material on both surfaces of the capacitor lamination; forming a first opening and a second opening in the capacitor lamination having the covering layers formed thereon to expose the first and second internal electrodes, respectively; forming plating layers in the first and second openings, the plating layers connected to the first and second internal electrodes; and dicing the capacitor lamination into chips on the basis of the first and second openings so that the plating layers formed in the first and second openings are provided as first and second external terminals.
摘要:
The present invention is related to a printed circuit board having embedded capacitors using a hybrid material and a method of manufacturing the same. This invention provides a printed circuit board having embedded capacitors using a material for a hybrid dielectric layer including liquid crystal polymer and ceramic powder, and a method of manufacturing such a printed circuit board.
摘要:
Disclosed herein is a composition for forming a substrate, including: a compound prepared by polymerizing a liquid crystal thermosetting oligomer having one or more soluble structural units in a main chain thereof and having a thermosetting group at one or more of two ends of the main chain thereof with a fluorine compound having a functional group which can react with the main chain of the liquid crystal thermosetting oligomer.
摘要:
A method of manufacturing a printed circuit board including embedded capacitors, composed of a polymer condenser laminate including a plurality of polymer condenser layers, each of which has a polymer sheet and a conductor pattern formed on the polymer sheet, and a via hole for interlayer connection therethrough, and a circuit layer formed on either surface or both surfaces of the polymer condenser laminate and having a circuit pattern and a via hole for interlayer connection therethrough. The printed circuit board manufactured by the method of the current invention has higher capacitance density per unit area than conventional embedded capacitor printed circuit boards, whereby capacitors having various capacitance values, such as multilayered ceramic capacitors having high capacitance, can be embedded in the printed circuit board, instead of being mounted thereon.
摘要:
Disclosed herein is a printed circuit board including embedded capacitors, composed of a polymer condenser laminate including a plurality of polymer condenser layers, each of which has a polymer sheet and a conductor pattern formed on the polymer sheet, and a via hole for interlayer connection therethrough, and a circuit layer formed on either surface or both surfaces of the polymer condenser laminate and having a circuit pattern and a via hole for interlayer connection therethrough. The printed circuit board of the current invention has higher capacitance density per unit area than conventional embedded capacitor printed circuit boards, whereby capacitors having various capacitance values, such as multilayered ceramic capacitors having high capacitance, can be embedded in the printed circuit board, instead of being mounted thereon. Also, a method of manufacturing the printed circuit board including embedded capacitors is provided.