摘要:
A transformer and a liquid crystal display apparatus having the transformer are provided. The transformer includes a bobbin having at least one first winding section, at least one second winding section, and at least one core insertion groove formed therein. The transformer also includes at least one coil wound around the first winding section and the second winding section with at least one core inserted into the core insertion groove.
摘要:
A backlight unit includes; a light source, an inverter which provides the light source with an input voltage, and a printed circuit board (“PCB”) connected to the light source, wherein the PCB includes a protection circuit which detects an open-lamp-protection voltage which varies according to a change of the input voltage and changes a reference voltage according to the change of the input voltage, wherein the protection circuit turns off the inverter when the detected open-lamp-protection voltage is higher than the changed reference voltage.
摘要:
A liquid crystal display device includes a liquid crystal display panel, a lamp disposed behind the liquid crystal display panel, a cover accommodating the lamp, and an inverter disposed behind the cover. The inverter includes a substrate and a transformer mounted on the substrate and driving the lamp. The transformer includes a core and a coil that is wound around at least a part of the core. The liquid crystal display panel further includes a transformer cover which covers the coil, an inverter cover which covers the inverter and the transformer cover, and a metal member in the transformer cover.
摘要:
According to one or more embodiments, an inverter provides a light source with an input voltage. A protection circuit shuts down the inverter based on an overvoltage protection level that is detected based on the input voltage. A protection circuit control part shuts down the operation of the protection circuit during a predetermined interval. Abnormal operation of the protection circuit caused by a high voltage provided when the light source is turned on may be prevented. Therefore, a turn-on defect of the light source may be prevented.
摘要:
A backlight assembly includes: a plurality of lamp units; and an inverter which includes a plurality of pattern capacitors, wherein each of the pattern capacitors is electrically connected to a respective one of the plurality of lamp units, wherein each of the pattern capacitors comprises a printed circuit board, and a conductive layer formed on one side of the printed circuit board, and at least one of the plurality of pattern capacitors has a different electric capacity than another of the pattern capacitors.
摘要:
A balance board includes; a substrate, a first wire disposed on the substrate, a second wire disposed on the substrate and spaced apart from the first wire, a plurality of first balance coils connected to the first wire and which uniformly distribute a first power supply voltage, a plurality of second balance coils connected to the second wire and which uniformly distribute a second power supply voltage, and a conductive pattern disposed on the substrate and spaced apart from the first and second wires, wherein the first and second wires are disposed substantially in parallel with each other, the second wire being divided into a plurality of parts with respect to an area where the first wire and the second wire cross over one another and the plurality of parts of the second wire are connected by a plurality of jumper connectors overlapping the first wire.
摘要:
An inverter circuit includes plural pairs of third coils, in which adjacent third coils are serially connected to each other so as to offset AC voltage generated from the paired third coils, one end of the paired third coils being connected to ground. Input terminals of plural diodes are connected to one end of the paired third coils so as to generate the voltage detection value by detecting voltage generated from the paired third coils. A fault detector compares the voltage detection value generated from the diodes with a predetermined threshold value to detect a fault and generates the comparison result.
摘要:
According to one or more embodiments, an inverter provides a light source with an input voltage. A protection circuit shuts down the inverter based on an overvoltage protection level that is detected based on the input voltage. A protection circuit control part shuts down the operation of the protection circuit during a predetermined interval. Abnormal operation of the protection circuit caused by a high voltage provided when the light source is turned on may be prevented. Therefore, a turn-on defect of the light source may be prevented.
摘要:
A balance board includes; a substrate, a first wire disposed on the substrate, a second wire disposed on the substrate and spaced apart from the first wire, a plurality of first balance coils connected to the first wire and which uniformly distribute a first power supply voltage, a plurality of second balance coils connected to the second wire and which uniformly distribute a second power supply voltage, and a conductive pattern disposed on the substrate and spaced apart from the first and second wires, wherein the first and second wires are disposed substantially in parallel with each other, the second wire being divided into a plurality of parts with respect to an area where the first wire and the second wire cross over one another and the plurality of parts of the second wire are connected by a plurality of jumper connectors overlapping the first wire.
摘要:
A liquid crystal display device includes a liquid crystal display panel, a lamp disposed behind the liquid crystal display panel, a cover accommodating the lamp, and an inverter disposed behind the cover. The inverter includes a substrate and a transformer mounted on the substrate and driving the lamp. The transformer includes a core and a coil that is wound around at least a part of the core. The liquid crystal display panel further includes a transformer cover which covers the coil, an inverter cover which covers the inverter and the transformer cover, and a metal member in the transformer cover.