Method for manufacturing an element having electrically conductive members for application in a microelectronic package
View Patent ↗A microelectronic package ( 31 ) has a microelectronic device, which is encapsulated in a quantity of material ( 27 ), and a lead frame element ( 15 ) for enabling the microelectronic device to be electrically contacted from outside of the package ( 31 ). The lead frame element ( 15 ) comprises at least two elongated members ( 11 ) comprising electrically conductive material and a filling material ( 12 ) comprising electrically insulating material, wherein the members ( 11 ) are partially embedded in the filling material ( 12 ). The lead frame element ( 15 ) is manufactured by providing elongated members ( 11 ), positioning the members ( 11 ) according to a predetermined configuration, providing filling material ( 12 ) to spaces ( 13 ) which are present between the members ( 11 ), and possibly removing portions of the filling material ( 12 ) and the members ( 11 ) in order to expose the electrically conductive material of the members ( 11 ). An important advantage of manufacturing the lead frame element ( 15 ) on the basis of elongated members ( 11 ) and a filling material ( 12 ) is that no waste or only a small quantity of waste is produced.
1. Method for manufacturing an element which is intended to be applied in a microelectronic package having at least one microelectronic device, for the purpose of enabling the microelectronic device to be electrically contacted from outside of the package, comprising the following steps:
providing at least two members comprising electrically conductive material and having an elongated appearance;
placing the elongated members in predetermined positions with respect to each other; and
embedding at least a portion of the elongated members in a non-conductive filling material and fixing the elongated members in their predetermined positions with respect to each other; and
after providing the at least two elongated members and after embedding at least the portion of the elongated members in the non-conductive filling material, electrically connecting the at least one microelectronic device to the at least two elongated members.
2. Method according to claim 1 , further comprising the step of removing a portion of the filling material in order to expose a portion of the elongated members.
3. Method according to claim 1 further comprising temporarily supporting the elongated members and ensuring that the elongated members maintain their predetermined positions with respect to each other when the filling material is provided.
4. Method according to claim 1 , wherein the elongated members are positioned at different levels, in a crossed configuration.
5. Method according to claim 1 , wherein the elongated members are interconnected in a first instance, and wherein the elongated members are separated after the step of providing the filling material has been carried out.
6. Method according to claim 1 , wherein, after the step of providing the filling material has been carried out, at least one of the elongated members is interrupted by cutting away a portion of the elongated member.
7. Method according to claim 2 , wherein a layer of the element is removed by cutting through the filling material and the elongated members, wherein a portion of the elongated members extending in a longitudinal direction of the elongated members is removed.
8. Method for manufacturing a foil which is intended to be applied in a process of manufacturing an array of elements, wherein each element is intended to be applied in a microelectronic package having at least one microelectronic device, for the purpose of enabling the microelectronic device to be electrically contacted from outside of the package, comprising the following steps:
providing at least one member comprising electrically conductive material and having an elongated appearance;
providing a winding reel and winding the elongated member around the reel;
embedding the elongated member wound around the reel in a non-conductive filling material;
removing a portion of the filling material in order to expose a portion of the elongated members; and
removing a layer of the element by cutting through the filling material and the elongated members, wherein a portion of the elongated members extending in a longitudinal direction of the elongated members is removed.
9. Method for manufacturing a microelectronic package, comprising the following steps:
providing an element having at least two elongated members comprising electrically conductive material, which are at least partially embedded in a non-conductive filling material;
providing a microelectronic device and establishing electrical connections between this device and at least two elongated members of the element; and
encapsulating the microelectronic device in an encapsulation material;
removing a portion of the non-conductive filling material in order to expose a portion of the elongated members; and
removing a layer of the element by cutting through the non-conductive filling material and the elongated members, wherein a portion of the elongated members extending in a longitudinal direction of the elongated members is removed.
10. Method for manufacturing a microelectronic package, comprising the following steps:
manufacturing an array of microelectronic packages by providing an array of elements, wherein each element has at least two elongated members comprising electrically conductive material, which are at least partially embedded in a non-conductive filling material;
after providing the array of elements, providing microelectronic devices and establishing electrical connections between these devices and at least two elongated members of the elements;
providing material for encapsulating the microelectronic devices; and
dividing the array of microelectronic packages into individual microelectronic packages.
11. Method for manufacturing a microelectronic package, comprising the following steps:
manufacturing an array of microelectronic packages by providing a foil comprising non-conductive material in which elongated members comprising electrically conductive material are at least partially embedded;
after providing the foil, providing microelectronic devices and establishing electrical connections between these devices and at least two elongated members of the foil;
providing material for encapsulating the microelectronic devices; and
dividing the array of microelectronic packages into individual microelectronic packages.
12. Method according to claim 11 , comprising the step of folding the foil.
13. Method for manufacturing an element which is intended to be applied in a microelectronic package having at least one microelectronic device, for the purpose of enabling the microelectronic device to be electrically contacted from outside of the package, comprising the following steps:
providing at least two members comprising electrically conductive material and having an elongated appearance;
placing the elongated members in predetermined positions with respect to each other;
providing a non-conductive filling material for embedding at least a portion of the elongated members and fixing the elongated members in their predetermined positions with respect to each other; and
removing a portion of the filling material in order to expose a portion of the elongated members;
wherein a layer of the element is removed by cutting through the filling material and the elongated members, wherein a portion of the elongated members extending in a longitudinal direction of the elongated members is removed.