摘要:
The object of the present invention is to provide a laminated circuit board with electronic components buried therein wherein the laminated circuit board may assure excellent reliability of electrical connections and high mechanical strength even with electronic components mounted in high density. It comprises a substrate (1001) on which a land disposed on one main surface thereof is connected and fixed by solder (1007) to integrated circuit (1005) or the like, and a sheet (1011) laminated on the upper surface of the substrate (1001) and also provided with a filling portion by fluid resin formed by clearance (1008) at the outer periphery of integrated circuit (1005) or the like, wherein the sheet (1011) maintains its shape by woven or non-woven cloth having a hole (1012) in which integrated circuit (1005) or the like is buried, and the woven or non-woven cloth is impregnated with resin (1016) having heat fluidity and is thermally compressed. Thus, the electrical and mechanical connections between the laminated circuit board and electronic component can be enhanced in reliability.
摘要:
The object of the present invention is to provide a laminated circuit board with electronic components buried therein wherein the laminated circuit board may assure excellent reliability of electrical connections and high mechanical strength even with electronic components mounted in high density. It comprises a substrate (1001) on which a land disposed on one main surface thereof is connected and fixed by solder (1007) to integrated circuit (1005) or the like, and a sheet (1011) laminated on the upper surface of the substrate (1001) and also provided with a filling portion by fluid resin formed by clearance (1008) at the outer periphery of integrated circuit (1005) or the like, wherein the sheet (1011) maintains its shape by woven or non-woven cloth having a hole (1012) in which integrated circuit (1005) or the like is buried, and the woven or non-woven cloth is impregnated with resin (1016) having heat fluidity and is thermally compressed. Thus, the electrical and mechanical connections between the laminated circuit board and electronic component can be enhanced in reliability.
摘要:
The invention presents a manufacturing method of laminated substrate capable of realizing small size of portable electronic appliances. Prepreg 141 is a thermosetting resin which holds a plate form in first temperature range, has a thermal fluidity in second temperature range, and is cured in third temperature range, and integrating process (118) includes softening (120) of heating prepreg (141) to second temperature range, and softening the resin impregnated in prepreg (141), forced flowing (122) of compressing prepreg (141) before prepreg (141) comes to third temperature range, and forcing the resin to flow into space and gap formed among semiconductor (105), resistor (106), and substrate (101), and hardening (123) of heating prepreg (141) to third temperature range. As a result, without using intermediate material, space and gap formed among semiconductor (105), resistor (106), and substrate (101) can be securely filled with resin.
摘要:
The invention presents a manufacturing method of laminated substrate capable of realizing small size of portable electronic appliances. Prepreg 141 is a thermosetting resin which holds a plate form in first temperature range, has a thermal fluidity in second temperature range, and is cured in third temperature range, and integrating process (118) includes softening (120) of heating prepreg (141) to second temperature range, and softening the resin impregnated in prepreg (141), forced flowing (122) of compressing prepreg (141) before prepreg (141) comes to third temperature range, and forcing the resin to flow into space and gap formed among semiconductor (105), resistor (106), and substrate (101), and hardening (123) of heating prepreg (141) to third temperature range. As a result, without using intermediate material, space and gap formed among semiconductor (105), resistor (106), and substrate (101) can be securely filled with resin.
摘要:
This invention relates to a ceramics and its manufacturing method, and this is to offer a ceramics showing very little dimensional change after sintering and high dimensional accuracies, so that the characteristics of inorganic functional material can be fully maintained and utilized. The invented ceramics comprises of grains of inorganic functional material and grains of complex oxide, and the pores exisiting between said grains of inorganic functional material is filled with said grains of complex oxide produced by a sintering reaction between the oxidized metal and the inorganic compound.
摘要:
A composite ferrite material is provided. The composite ferrite material obtained from a mixture of a magnetic ferrite powder with high crystallinity, prepared by firing at a prescribed temperature, and a glass powder, having a softening temperature lower than said firing temperature, by heat treatment of said mixture at a temperature which is higher than, or equal to said softening temperature of said glass powder and lower than, or equal to said firing temperature, to effect the binding of said magnetic ferrite powder by said glass material. The composite ferrite material has excellent magnetic characteristics and can be obtained in a form of the desired dimensions with high accuracy.
摘要:
A composite ferrite material is provided. The composite ferrite material obtained from a mixture of a magnetic ferrite powder with high crystallinity, prepared by firing at a prescribed temperature, and a glass powder, having a softening temperature lower than said firing temperature, by heat treatment of said mixture at a temperature which is higher than, or equal to said softening temperature of said glass powder and lower than, or equal to said firing temperature, to effect the binding of said magnetic ferrite powder by said glass material. The composite ferrite material has excellent magnetic characteristics and can be obtained in a form of the desired dimensions with high accuracy.