Abstract:
A liquid crystal display includes; first and second substrates facing each other, a liquid crystal layer interposed between the first and second substrates and including liquid crystal molecules, a first subpixel electrode disposed on the first substrate, the first subpixel electrode receiving a first data voltage, a second subpixel electrode disposed on the first substrate, the second subpixel electrode receiving a second data voltage; and a short protrusion disposed on the second substrate and simultaneously facing the first and second subpixel electrodes, wherein the liquid crystal layer is vertically aligned and has positive dielectric anisotropy.
Abstract:
An oscillatory wave generating unit and an oscillatory wave sensing unit are installed at both ends of a refrigerant pipe of an evaporator of the cooling system, an amount of frost formed on the refrigerant pipe is determined by comparing a wave form of an oscillatory wave generated from one end of the refrigerant through the oscillatory wave generating unit and a wave form of the oscillatory wave sensed by the other one end of the refrigerant through the oscillatory wave sensing unit, and whether or not a defrosting operation is performed is determined by a result of the determination. The cooling system increases the accuracy in sensing the amount of the frost formed on the evaporator of a refrigerator, a Kimchi refrigerator, or an air conditioner, and respectively starts and ends the defrosting operation at proper points of time, thus enhancing a heat-exchanging performance and increasing energy efficiency.
Abstract:
A packing box for an electronic product to protect an electronic product from external impact. The packing box includes a first packing unit to pack an upper part of the product, a second packing unit passing through the first packing unit and joined to a lower part of the first packing unit, to pack a middle part of the product, and a third packing unit passing through the first and second packing units and joined to a lower part of the second packing unit, to pack a lower part of the product. The packing box is readily disassembled and allows the product to be easily repacked.
Abstract:
A semiconductor device includes a semiconductor package, a circuit board and an interval maintaining member. The semiconductor package has a body and a lead protruded from the body. The circuit board has a first land electrically connected to the lead. The interval maintaining member is interposed between the circuit board and the body. The interval maintaining member maintains an interval between the lead and the first land. Thus, an interval between the lead and the land is uniformly maintained, so that a thermal and/or mechanical reliability of the semiconductor device is improved.
Abstract:
A channel allocation method for use in a wireless communication environment, where Wireless Local Area Networks (WLANs) and Wireless Personal Area Networks (WPANs) coexist, includes collecting, at an access point, information on channels used by the WLANs and WPANs, determining available WLAN channels and available WPAN channels based on the channel information, allocating one of the available WLAN channels and one of the available WPAN channels to the access point, and informing the WLANs and WPANs of the allocated WLAN and WPAN channels.
Abstract:
It is an aspect of the present invention to provide a wafer bonding apparatus having a pressing apparatus configured to press wafers fixed in a fixing apparatus, wherein the fixing apparatus is configured to allow the pressing apparatus to press the wafers without interference. The wafer bonding apparatus may include an upper wafer and a lower wafer, a support member configured to support the upper wafer and the lower wafer, a push member on the upper wafer, and a fixing apparatus configured to fix the push member to the support member, wherein the push member includes a fixing part extending outward from a periphery of the upper wafer, and the fixing apparatus is coupled to the fixing part. It is also an aspect of the present invention to provide a method for bonding wafers.
Abstract:
Controller unit includes local dimming logic board and controller board. Local dimming logic board generates local dimming signals in response to image data received from external device. When boost-worthy portion of image data is found to satisfy predefined boosting conditions, local dimming logic board increases luminance value of backlight dimming signal supplied for corresponding boost-worthy area portion of image data. Controller board receives image data from local dimming logic board, and gamma converts peripheral area data corresponding to peripheral area of image data into converted image data using compensating gamma conversion different than that used for image data of backlight boosted area so that luminance of peripheral area adjacent to boosting area is decreased by use of compensating gamma conversion in place of normal or reference gamma conversion. Decreased luminance substantially counter compensates for increased luminance due to light from spreading into peripheral area from adjacent boosted area.
Abstract:
A stacked semiconductor module, a method of fabricating the same, and an electronic system using the module are provided. A first semiconductor module having a plurality of semiconductor devices mounted on a rigid printed circuit board (PCB) and a second semiconductor module having a plurality of other semiconductor devices mounted on a flexible PCB are provided. On the rigid PCB a number L of first tabs may be disposed on a first surface, and a number K of second tabs may be disposed on a second surface of the rigid PCB. The flexible PCB may have a number M of third tabs on a third surface, and a number N of fourth tabs on a fourth surface of the flexible PCB. The second tabs may be combined with the third tabs using a conductive adhesive. The third tabs may be electrically connected to corresponding ones of the second tabs.
Abstract:
An IC package including a plurality of BGA IC packages stacked on a printed circuit board and a method of manufacturing the same. The IC package includes a printed circuit board, a first BGA IC package, having a plurality of first solder balls, stacked on the printed circuit board, a second BGA IC package, having a plurality of second solder balls, stacked on the first BGA IC package, and an interposer having a plurality of through-holes, which are filled by the second solder balls in a molten state such that the length of the second solder balls increases while the second solder balls harden, the interposer being joined to the top of the first BGA IC package.
Abstract:
A burn-in board connection device includes a first connection unit to hold a burn-in board and move in a first direction perpendicular to the burn-in board that is inserted in a chamber of a burn-in test device, a second connection unit to move in a second direction parallel to the burn-in board to attach/detach the burn-in board that is held by the first connection unit to/from a connector disposed in the chamber. A burn-in board connection method includes coupling a finger to the burn-in board by moving the finger in a first direction, attaching the burn-in board to a connector by moving the finger in a second direction, and driving the finger by converting a rotation of a servo motor into a linear movement of the finger.