摘要:
Apparatus and methods for providing a robust solder connection in a flip chip arrangement using lead free solder are disclosed. A copper column extends from an input/output terminal of an integrated circuit. A cap layer of a material comprising one of nickel, nickel alloys, palladium, platinum, cobalt, silver, gold, and alloys of these is formed on the exterior surface of the copper column. A lead free solder connector is disposed on the cap layer. A substrate having a metal finish solder pad is aligned with the solder connector. A thermal reflow is performed. The metal finish may be of nickel, nickel alloy and nickel based materials. Following a thermal reflow, the solder connection formed between the copper terminal column and the metal finish solder pad is less than 0.5 wt. %.
摘要:
This invention relates to a wafer-leveled chip packaging method, comprising the steps of: providing a wafer; attaching at least one first chip to the wafer; forming a first insulating layer on the wafer; forming a plurality of first conductive vias penetrating the first insulating layer, wherein parts of the first conductive vias are electrically connected with the first chip; forming a conductive pattern layer on the surface of the first insulating layer wherein the conductive pattern layer is electrically connected with the first conductive vias; forming a plurality of through holes penetrating the wafer; filling a second insulating layer in the through holes; and forming a plurality of second conductive vias in the second insulating layer, wherein the second conductive vias are electrically connected with the first conductive vias.
摘要:
A wafer-leveled chip packaging method, comprising the steps of: providing a wafer; attaching at least one first chip to the wafer; forming a first insulating layer on the wafer; forming a plurality of first conductive vias penetrating the first insulating layer, wherein parts of the first conductive vias are electrically connected with the first chip; forming a conductive pattern layer on the surface of the first insulating layer wherein the conductive pattern layer is electrically connected with the first conductive vias; forming a plurality of through holes penetrating the wafer; filling a second insulating layer in the through holes; and forming a plurality of second conductive vias in the second insulating layer, wherein the second conductive vias are electrically connected with the first conductive vias.
摘要:
A method for packaging a semiconductor device disclosed. A substrate comprising a plurality of dies, separated by scribe line areas respectively is provided, wherein at least one layer is overlying the substrate. A portion of the layer within the scribe lines area is removed by photolithography and etching to form openings. The substrate is sawed along the scribe line areas, passing the openings. In alternative embodiment, a first substrate comprising a plurality of first dies separated by first scribe line areas respectively is provided, wherein at least one first structural layer is overlying the first substrate. The first structural layer is patterned to form first openings within the first scribe line areas. A second substrate comprising a plurality of second dies separated by second scribe line areas respectively is provided, wherein at least one second structural layer is overlying the substrate. The second structural layer is patterned to form second openings within the second scribe line areas. The first substrate and the second substrate are bonded to form a stack structure. The stack structure is cut along the first and second scribe line areas, passing the first and second openings.
摘要:
The present invention discloses an electronic device package and a method of the package. In particular, an electronic device package and a method of the package suitable for a bumpless electronic device package with enhanced electrical performance and heat-dissipation efficiency are disclosed. The method comprises: providing a substrate having a plurality of vias and a plurality of electronic devices; forming a gluing layer on a surface of the substrate and fixing the electronic devices on the gluing layer, wherein the electronic devices have I/O units aligned with the vias respectively; forming a plurality of fixing layers in the gaps between the electronic devices; trenching a plurality of openings aligned with the vias respectively in the fixing layer; forming a plurality of metallic conductive units in the vias, the openings and part of the surface of the substrate; and forming a passivation layer over the other surface of the substrate.
摘要:
A method to control the pretilt angle of a liquid crystal device is disclosed. The claimed invention provides two substrates and at least one vertical alignment layers, which are fabricated on one side of each substrate and are opposite to each other. Moreover, a liquid crystal layer is sandwiched between the alignment layers, and the preferred embodiment of the liquid crystal device has an Optically Compensated Birefrigence (OCB) configuration. More particularly, before the process of alignment for the liquid crystal device is performed, a pretilt angle disclosed in the present invention is adjusted since at least one vertical alignment layer is treated with a particle beam generated by plasma or ions. The pretilt angle can range between 5 and 85 degrees.
摘要:
This invention relates to a packaging structure and method of an image sensor module. The method comprises: providing a transparent substrate having a first patterned conductive layer; carrying an image sensor integrated circuit chip having a photosensitive active area and at least one passive chip on the transparent substrate, wherein the photosensitive active area faces the transparent substrate; forming an insulating build-up film over the transparent substrate; and forming a plurality of conductive vias in the insulating build-up film wherein the ends of the conductive vias are connected with the passive chip or the first patterned conductive layer of the transparent substrate while the other ends of the conductive vias are exposed on the surface of the insulating build-up film. The packaging method is capable of down-sizing the construction of the image sensor module and simplifying the processing steps.
摘要:
A method to control the pretilt angle of a liquid crystal device is disclosed. The claimed invention provides two substrates and at least one vertical alignment layers, which are fabricated on one side of each substrate and are opposite to each other. Moreover, a liquid crystal layer is sandwiched between the alignment layers, and the preferred embodiment of the liquid crystal device has an Optically Compensated Birefrigence (OCB) configuration. More particularly, before the process of alignment for the liquid crystal device is performed, a pretilt angle disclosed in the present invention is adjusted since at least one vertical alignment layer is treated with a particle beam generated by plasma or ions. The pretilt angle can range between 5 and 85 degrees.
摘要:
A method that uses at least one hydrogen ion beam for alignment of liquid crystal molecules is proposed in the present invention. The method of the present invention is proposed to resolve the problems of physical destruction and surface deterioration of the alignment films caused by the conventional method using argon ions beams. The method of the present invention directly uses at least one hydrogen ion beam to impact the alignment film. Hence, the physical destruction of the alignment film is reduced. In addition, via the reaction between hydrogen ions and the alignment films, the quality of the alignment film is improved.
摘要:
This invention relates to a packaging structure and method of an image sensor module. The method comprises: providing a transparent substrate having a first patterned conductive layer; carrying an image sensor integrated circuit chip having a photosensitive active area and at least one passive chip on the transparent substrate, wherein the photosensitive active area faces the transparent substrate; forming an insulating build-up film over the transparent substrate; and forming a plurality of conductive vias in the insulating build-up film wherein the ends of the conductive vias are connected with the passive chip or the first patterned conductive layer of the transparent substrate while the other ends of the conductive vias are exposed on the surface of the insulating build-up film. The packaging method is capable of down-sizing the construction of the image sensor module and simplifying the processing steps.