Abstract: In the method of driving a plasma display panel according to the present invention, the address electrodes are divided into a plurality of electrode groups, and the an application time point of data pulses applied to one or more of the address electrode groups in the address period is different from that of a scan pulse applied to the scan electrode in all the sub-fields of the frame. In addition, the width of the scan pulse applied during an address period of a predetermined number of the sub-fields is greater than the width of scan pulses applied during the address period of the remaining sub-fields.

Abstract: Disclosed are a radio frequency (RF) front end module and a multi-band communication module using the RF front end module. The RF front end module may use a plurality of bandpass filters and at least one diplexer being connected to at least one of front ends or rear ends of two bandpass filters of the plurality of bandpass filters.

Abstract: The present invention relates to a plasma display apparatus. The plasma display apparatus according to the present invention comprises a plasma display panel comprising a scan electrode, a set-up driver that applies a rising pulse to the scan electrode during a reset period, a set-down driver that applies a first ramp-down pulse before the rising pulse is applied to the scan electrode and applies a second ramp-down pulse after the rising pulse is applied to the scan electrode, and a scan pulse driver that applies a scan pulse having an amount, which is substantially the same as that of the rising pulse, to the scan electrode during an address period subsequent to the reset period.

Abstract: A film bulk acoustic resonator (FBAR) filter and a duplexer are disclosed. At least one series resonator is positioned between an input port for inputting a frequency signal and an output port for outputting a frequency signal, at least two shunt resonators respectively positioned between the input and output ports and a ground, a first trimming inductor connects the at least two shunt resonators and the ground, and a second trimming inductor is positioned between the at least two shunt resonators.

Abstract: The present invention relates to a plasma display apparatus and a driving method thereof in which an erroneous discharge, a misdischarge and an abnormal discharge are prevented, a darkroom contrast is increased, an operation margin is widen, and an influence of a lower substrate wall charge is reduced in a sustain discharge. The plasma display apparatus and its driving method is characterized in that when the plasma display panel has a second temperature higher than a first temperature, a period between the last sustain pulse generated during a sustain period of (n?1)th sub-field (“n” is a positive integer) and an initialization signal generated during a reset period of nth sub-field is more lengthened than when it has the first temperature. The plasma display apparatus and its driving method is characterized in that a pre sustain pulse (PRESUSP) rising from a sustain bias voltage (Vzb) is applied to the second electrode in the sustain period.

Abstract: A tunable resonator is provided. The tunable resonator includes a film bulk acoustic resonator (FBAR) for performing a resonance, and at least one driver which is arranged at a side of the FBAR and is deformed and brought into contact with the FBAR by an external signal, thereby changing a resonance frequency of the FBAR. Accordingly, a multiband integration and a one-chip manufacture can be implemented simply using a micro electro mechanical system (MEMS) technology and a mass production is possible.

Abstract: A film bulk acoustic resonator, and a method for manufacturing the same. The film bulk acoustic resonator includes a substrate, a protection layer vapor-deposited on the substrate, a membrane vapor-deposited on the protection layer and at a predetermined distance from an upper side of the substrate, and a laminated resonance part vapor-deposited on the membrane. Further, the manufacturing method includes vapor-depositing a membrane on a substrate, forming protection layers on both sides of the membrane, vapor-depositing a laminated resonance part on the membrane, and forming an air gap by removing a part of the substrate disposed between the protection layers. Accordingly, the membrane can be formed in a simple structure and without stress, and the whole manufacturing process is simplified.

Abstract: A micro electro-mechanical system (MEMS) device package and a method of manufacturing the same are provided.

Abstract: A RF system which includes a silicon substrate formed with at least one via-hole filled with conductive material so that both sides of the silicon substrate are electrically connected with one another; at least one flat device formed on one side of the silicon substrate; and at least one RF MEMS device formed on the other side of the silicon substrate.

Abstract: A plasma display apparatus is disclosed. A scan driver of the plasma display apparatus supplies a voltage of a scan signal of a negative polarity direction and a voltage of a sustain signal to a scan electrode using one voltage source. Further, a sustain driver of the plasma display apparatus supplies a voltage of a sustain signal and a sustain bias voltage to a sustain electrode using one voltage source.

Abstract: In a plasma display apparatus and a method of driving the same which is driven by a driving signal having a reset period, an address period and a sustain period, a sustain pulse is applied during the sustain period, the sustain pulse including: an interval in which the sustain pulse rises from a ground voltage to a first voltage; an interval in which the first voltage is substantially constant for predetermined period of time; an interval in which the sustain pulse rises from the first voltage to a second voltage; and an interval in which the second voltage is substantially constant for a predetermined period of time. At least two discharges can be generated per a single sustain pulse by applying a sustain pulse rising and falling in two stages during one sustain period, and discharge efficiency and luminance can be improved by lengthening a light emission time by maintaining the light generated by a discharge for a predetermined time.

Abstract: A plasma display device is provided. The plasma display device can reduce the capacity of a pass switch necessary for various driving circuits for applying various driving signals to a plasma display panel (PDP) and can thus contribute to the reduction of the manufacturing cost. In addition, the plasma display device can reduce the amount of heat generated by the various driving circuits and can thus contribute to the improvement of the reliability and the reduction of the power consumption.

Abstract: A RF system which includes a silicon substrate formed with at least one via-hole filled with conductive material so that both sides of the silicon substrate are electrically connected with one another; at least one flat device formed on one side of the silicon substrate; and at least one RF MEMS device formed on the other side of the silicon substrate.

Abstract: A MEMS device package and a method of manufacturing the same. The MEMS device package includes a device substrate having a surface on which a MEMS active device is formed, and multiple sealing pads arranged around the MEMS active device so that the sealing pads provide electric paths for the MEMS active device. In addition, the MEMS device package may include a cap substrate bonded to the device substrate through the multiple sealing pads, the cap substrate including a trench, within which the MEMS active device is positioned, and via holes. One or more outer electrode pads may be formed on one surface of the cap substrate to be electrically connected with the multiple sealing pads through the via holes. Because there are several bonding and sealing areas between the device substrate and the cap substrate, the sealing intensity is strengthened.

Abstract: A resonator having a membrane formed of a piezoelectric layer sandwiched between first and second electrode is suspended above a cavity formed from the back surface of the support structure. In one embodiment, the cavity walls are substantially perpendicular to the back surface. In another embodiment, the first electrode is formed in the cavity such that it is electrically connected to an electrode on the back surface of the support structure. In yet another embodiment, the cavity is formed via an etch through via holes in the back surface of the support structure, which leads to greater flexibility in designing a method of manufacture while reducing the need for alignment relative to other designs.

Abstract: A plasma display panel comprising an energy recovery circuit and a driving method thereof are provided. The plasma display panel comprises an energy charging part for supplying a predetermined voltage, an energy supply and recovery part for receiving an energy of the predetermined voltage from the energy charging part, and a pulse forming part. The pulse forming part supplies the energy of the predetermined voltage supplied from the energy supply and recovery part to the plasma display panel, maintains a sustain voltage of the plasma display panel, and recovers the energy of the predetermined voltage to the energy supply and recovery part.

Abstract: The present invention provides a plasma display apparatus comprising a second driver supplying a first bias signal with a voltage maintained at a first bias voltage in a reset period and an address period, a first sustain rising signal that gradually rises from the first bias voltage to a second bias voltage, and a second bias signal with a voltage maintained at the second bias voltage, to the second electrode.

Abstract: A subminiature, high-performance monolithic duplexer is disclosed. The monolithic duplexer includes a substrate, a transmitting-end filter formed in a first area on an upper surface of the substrate, a receiving-end filter formed in a second area on the upper surface of the substrate, a packaging substrate, bonded on an area on the upper surface of the substrate, for packaging the transmitting-end filter and the receiving-end filter in a sealed state, and a phase shifter, formed on one surface of the packaging substrate and connected to the transmitting-end filter and the receiving-end filter, respectively, for intercepting a signal inflow between the transmitting-end filter and the receiving-end filter.

Abstract: An integrated device is constructed by integrating an FBAR and a tunable capacitor. The integrated device includes a substrate; a resonator formed on the substrate; a driving electrode layer formed on the substrate apart from the resonator; a first electrode layer formed upwardly apart from the substrate and facing the resonator; and a second electrode layer formed upwardly apart from the substrate and facing the driving electrode layer, the second electrode layer stepped from the first electrode layer. Accordingly, the integrated device can increase the tuning range and mitigate the parasitic resistance.

Abstract: An energy recovery circuit is provided that includes: a panel capacitor formed equivalently in a scan electrode and a sustain electrode, a scan electrode driver installed at a side of the scan electrode of the panel capacitor to supply a sustaining pulse to the side of the scan electrode, and a sustain electrode driver installed at a side of the sustain electrode of the panel capacitor to supply the sustaining pulse to the side of the sustain electrode. The energy recovery circuit may further include a first diode coupled to the scan electrode side of the panel capacitor, a second diode coupled to the sustain electrode side of the panel capacitor, a first inductor commonly coupled to the sustain electrode side and the scan electrode side of the panel capacitor, a path providing part coupled to the first inductor, and a single source capacitor connected to the path providing part.