摘要:
The present invention relates to a vacuum insulation material using a getter material obtained by mixing zeolite and calcium oxide, and more particularly, to a vacuum insulation material in which zeolite having a large specific surface area to absorb the greater part of remaining water from the vacuum insulation material is mixed with calcium oxide and used as a getter material, thereby achieving improved initial thermal conductivity.
摘要:
Methods and systems for semiconductor packaging are disclosed and may include bonding a semiconductor wafer to a support structure, separating the wafer into discrete die, removing the die from the support structure, and attaching at least a subset of the die to a second support structure. Mold material may be placed in voids between the die utilizing a compression molding process, thereby generating a molded wafer, which may be demounted before depositing redistribution lines on the die and the mold material. Conductive balls may be placed on the redistribution lines before separating into molded packages. The molded wafer may be planarized utilizing a post-mold cure on a heated vacuum chuck after removing it from the second support structure. The redistribution lines may be electrically isolated utilizing polymer layers. The conductive balls may be placed on copper redistribution lines with a surface oxide layer at least 20 angstroms thick.
摘要:
A camera module according to an exemplary embodiment of the present invention includes a PCB (Printed Circuit Board) mounted with an image sensor, a housing mounted therein with camera parts and configured to protect the image sensor, and one or more sheets of lenses mounted at the housing, wherein the a window of the one or more sheets of lenses is formed with an IR (infrared) filter.
摘要:
Provided are methods of spectrum sensing and assigning quiet periods in a cognitive radio system in order to increase the reliability of detection regarding whether an incumbent user appears in his/her frequency channel, customer premises equipment (CPE), a base station, and the structure of a super frame for performing the methods. The spectrum sensing method includes communicating with a base station (BS) and performing spectrum sensing for frequency channels having quiet periods (QPs) during the QPs of the frequency channels used in the cognitive radio system, wherein the QPs of the frequency channels do not overlap each other
摘要:
The present invention relates to a porous ceramic structure, and a dehumidification/humidification apparatus comprising the same. More particularly, the present invention comprises: a porous ceramic humidifying medium having an inner circumferential surface and an outer circumferential surface; a dehumidifying medium which has an inner circumferential surface and an outer circumferential surface, and which is disposed in the porous ceramic humidifying medium; and a cutoff layer formed between the inner circumferential surface of the humidifying medium and the outer circumferential surface of the dehumidifying medium. The porous ceramic structure and the dehumidification/humidification apparatus comprising same according to the present invention can easily increase the humidifying and dehumidifying capacity, simplify a flow channel, and achieve a compact design.
摘要:
A semiconductor package and manufacturing method thereof are disclosed and may include a first semiconductor device comprising a first bond pad on a first surface of the first semiconductor device, a first encapsulant material surrounding side edges of the first semiconductor device, and a redistribution layer (RDL) formed on the first surface of the first semiconductor device and on a first surface of the encapsulant material. The RDL may electrically couple the first bond pad to a second bond pad formed above the first surface of the encapsulant material. A second semiconductor device comprising a third bond pad on a first surface of the second semiconductor device may face the first surface of the first semiconductor device and be electrically coupled to the first bond pad on the first semiconductor device. The first surface of the first semiconductor device may be coplanar with the first surface of the encapsulant material.
摘要:
Provided is a method of operating a semiconductor device, wherein an operating mode is set by adjusting timing of a voltage pulse or by adjusting a voltage level of the voltage pulse.
摘要:
A channel switching method is provided for a base station to allocate a slot for data exchange with each of a plurality of terminals in a frequency channel that is not used by an incumbent user (IU). The method includes include transmitting a channel switching message for requesting to switch to a backup channel when a signal of the IU is sensed in the frequency channel; transmitting a beacon frame via the backup channel, wherein the beacon frame comprises allocation information about slots which are in the frequency channel and which are respectively allocated to each of the plurality of terminals; and allocating the slot for data exchange with each of the plurality of terminals to the backup channel according to the allocation information, and communicating with each of the plurality of terminals.
摘要:
A transmission opportunity setting method in a wireless LAN system using multiple channels includes: receiving a request-to-send (RTS) frame from a wireless station, the RTS frame including information on a wireless LAN mode of the wireless station; and transmitting a clear-to-send (CTS) frame to the wireless station according to at least one of the number of remaining available channels among the multiple channels and the wireless LAN mode of the wireless station.