Abstract:
A chip stacked package structure and applications are provided, wherein the chip stacked package structure comprises a substrate, a first chip, a patterned circuit layer and a second chip. The substrate has a first surface and an opposite second surface. The first chip with a first active area and an opposite first rear surface is electrically connected to first surface of substrate by a flip chip bonding process. The patterned circuit layer set on the dielectric layer is electrically connected to the substrate via a bonding wire. The second chip set on the patterned circuit layer has a second active area and a plurality of second pads formed on the second active area, wherein the second bonding pad is electrically connected to the patterned circuit layer.
Abstract:
A method of fabricating a quad flat non-leaded package includes first forming a patterned conductive layer on a sacrificial layer. The patterned conductive layer includes a number of lead sets. A number of chips are attached to the sacrificial layer. Each of the chips is surrounded by one of the lead sets. Each of the chips is electrically connected to one of the lead sets, and a molding compound is formed on the sacrificial layer to cover the patterned conductive layer and the chips. The molding compound and the patterned conductive layer are then cut and singulated, and the sacrificial layer is pre-cut to form a number of recesses on the sacrificial layer. After the molding compound and the patterned conductive layer are cut and singulated and the sacrificial layer is pre-cut, the sacrificial layer is removed.
Abstract:
A manufacturing process for a Quad Flat Non-leaded (QFN) chip package structure is provided. First, a conductive layer having a plurality of recesses and a patterned solder resist layer on the conductive layer are provided, wherein the patterned solder resist layer covers the recesses of the conductive layer. A plurality of chips are bonded onto the patterned solder resist layer such that the patterned solder resist layer is between the chips and the conductive layer. The chips are electrically connected to the conductive layer by a plurality of bonding wires. At least one molding compound is formed to encapsulate the conductive layer, the patterned solder resist layer, the chips and the bonding wires. A part of the conductive layer uncovered by the patterned solder resist layer is removed so as to form a patterned conductive layer. Then, the molding compound and the patterned conductive layer are separated.
Abstract:
A manufacturing process for a chip package structure is provided. First, a patterned conductive layer having a plurality of first openings and a first patterned solder resist layer on the patterned conductive layer are provided. A second patterned solder resist layer is formed on the patterned conductive layer such that the first patterned solder resist layer and the second patterned solder resist layer are disposed at two opposite surfaces of the patterned conductive layer. Chips are bonded onto the first patterned solder resist layer such that the first patterned solder resist layer is between the chips and the patterned conductive layer. The chips are electrically connected to the patterned conductive layer by a plurality of bonding wires passing through the first openings. At least one molding compound is formed and the molding compound, the first patterned solder resist layer and the second patterned solder resist layer are separated.
Abstract:
To improve the yield, lifetime and driving voltage of the micro scratch drive actuator (SDA), this invention proposes a novel layout design including the etch holes and flange structure designs.Once the etch holes added to the layout of conventional SDA plate, the releasing of structure layer can be accelerated and the accumulated residual charges in the front end of SDA plate is reduced. In this innovative design, a longer lifetime and lower driving voltage of the SDA device can be achieved. On the other hand, adding the flange structure design in the corner of the beam-to-plate conjunction can improve the flexural rigidity of the narrow polysilicon supporting beam which will further enhance the yield of the SDA device and reduce the crack failure under actuating situation.
Abstract:
Based on the voltage-division theory, this invention proposes a new method to decrease the driving voltage of the micro scratch drive actuator (SDA) by using an ultra-low resistivity silicon wafer as substrate. This patent has compared two SDA actuators with the same layout and fabricating processes but under different resistivity of substrate. The SDA fabricated on the ultra-low resistivity silicon wafer has demonstrated a lower driving voltage of only about 4˜12 Vo-p. However, the conventional SDA using normal silicon wafer needs higher driving voltage (30˜75 Vo-p), thus has lower probability for commercial applications. On the other hand, this invention presents a new SDA process to overcome the inherent 2 μm line-width limitation of conventional mask aligner with 4360 Å UV wavelength light source (g-line) and further to reduce the driving voltage of SDA.
Abstract:
An automatic multimedia searching method and the multimedia downloading system thereof are provided, which are capable of increasing user's convenience on multimedia searching and downloading events. The method includes the following steps. First, an electronic device which stores a multimedia file and a data source connection are provided. Next, a multimedia file is played. When playing the multimedia file, the electronic device automatically searches the data source for multimedia files having the same content as the content of the information tag in the multimedia file. Finally, the found multimedia files are displayed on the electronic device.
Abstract:
A dual-layer recordable optical disc includes a first recording layer and a second recording layer disposed on the first recording layer. The first recording layer is made of organic material, and the second recording layer is made of inorganic material. The optical disc may further includes a first substrate, a second substrate and a bonding layer. The first recording layer includes a dye recording layer disposed on the first substrate, and a first reflection layer disposed on the dye recording layer, whereas the second recording layer includes an inorganic recording layer and a second reflection layer disposed on the inorganic recording layer. In addition, the second substrate is disposed on the second reflection layer, and the bonding layer is disposed between the first reflection layer and the inorganic recording layer. A manufacturing process of the optical disc is also provided to increase production yield and lower manufacturing cost.
Abstract:
A method and structure for intensifying track seeking signals from an optical disk, in particular, a recordable digital versatile disk (DVD-R). With the addition of an optical correction layer between a dye material layer and a reflection layer inside the DVD-R, track-seeking signals of the optical disk are intensified and recording quality of the optical disk is improved. The optical correction layer is a transparent or semi-transparent layer made from inorganic materials. The optical correction layer is formed over the dye material layer in a sputtering process.
Abstract:
A Quad Flat Non-leaded (QFN) chip package including a patterned conductive layer, a first solder resist layer, a chip, a plurality of bonding wires and a molding compound is provided. The patterned conductive layer has a first surface and a second surface opposite to each other. The first solder resist layer is disposed on the first surface, wherein a part of the first surface is exposed by the first solder resist layer. The chip is disposed on the first solder resist layer, wherein the first solder resist layer is between the patterned conductive layer and the chip. The bonding wires are electrically connected to the chip and the patterned conductive layer exposed by the first solder resist layer. The molding compound encapsulates the pattern conductive layer, the first solder resist layer, the chip and the bonding wires.