Abstract: An image forming apparatus includes a phase controller for controlling input power applied to a heating body through phase control. The image forming apparatus includes a fuser having the heating body, a switching unit supplying the input power to the heating body, and a phase controller determining an input phase of the input power based on a temperature of the fuser, in which the phase controller further controls the switching unit to vary a phase of the input power supplied to the heating body within a phase range set based on the input phase, for each control cycle of the input power.

Abstract: An image forming apparatus includes a fuser configured to fuse printing paper where a toner has been developed; and a fuser driver configured to provide power being provided from an external AC to a heating element inside the fuser so that the fuser has a predetermined temperature, wherein, in response to an operational state of the image forming apparatus being at a waiting state, the fuser driver performs a phase control on the power being provided to the heating element using AC power of sections other than a phase angle of a range predetermined based on a peak voltage value of the external AC power.

Abstract: Provided is a method of manufacturing a high-purity lithium phosphate by utilizing a lithium waste liquid of a wasted battery. Lithium phosphate is manufactured and refined by using a minimized amount of sodium hydroxide and by using phosphate, lithium hydroxide, and an optimized pH condition, so that it is possible to manufacture high-purity lithium phosphate from which fine impurities which cannot be removed by cleaning are effective removed. A waste water treatment process of processing waste water as to be immediately discharged is integrated, so that the method is very efficient and environment-friendly. Therefore, since the high-purity lithium phosphate can be manufactured by utilizing a lithium waste liquid discarded in a wasted battery recycling process, the method has an effect in that the method is applied to a wasted battery recycling industry to prevent environmental pollution and facilitate recycling resources.

Abstract: Provided is a method of manufacturing high-purity, high-quality manganese sulfate which can be immediately used for manufacturing a lithium ion secondary battery from manganese sulfate waste liquid of a wasted battery. Since impurities are removed from the manganese sulfate waste liquid by using sulfides causing no secondary contamination in the manganese sulfate waste liquid and the manganese sulfate is manufactured by performing evaporation concentration through heating, the manufacturing method is very environment-friendly and economical. Since the manganese recovering process improving the manufacturing yield of the manganese sulfate and the waste water treatment process capable of recycling the source materials and discharging waste water are integrated, the manufacturing method is very efficient and environment-friendly. The manufacturing method is applied to the recycling industry, and thus, it is possible to obtain effects of preventing environmental pollution and facilitating recycling the resources.

Abstract: A backlight unit includes a backlight module with a printed circuit board including blocks and MJT LEDs disposed on the blocks, respectively and a backlight control module generating a signal for drive control of each of the blocks, wherein each of the blocks comprises at least one MJT LED, and the backlight control module includes a drive controller for On/Off control and dimming control of each of the blocks.

Abstract: A backlight unit including a backlight module and a backlight control module. The backlight module includes a printed circuit board including blocks, and light emitting diode (LED) chips disposed on the blocks, and the backlight control module is configured to perform a dimming control of the LED chips. Each of the LED chips includes light emitting cells spaced apart from each other, each of the light emitting cells including a lower semiconductor layer, an upper semiconductor layer, and an active layer therebewteen, in which the lower semiconductor layers are partially exposed, connection structures electrically connecting the light emitting cells to each other, and an insulation layer disposed between the light emitting cells and the connection structures, the insulation layer covering a portion of the exposed lower semiconductor layers and having a width wider than the connection structures.

Abstract: A backlight unit including a backlight module and a backlight control module. The backlight module includes a printed circuit board including blocks arranged in an M×N matrix, in which M and N are natural numbers of 2 or greater, and M blocks are arranged in a horizontal direction and N blocks are arranged in a vertical direction, and at least one light emitting device disposed on each of the blocks. The backlight control module is configured to perform a dimming control of the M×N blocks such that the at least one light emitting device in one block can be controlled independently from other light emitting devices disposed in the remaining blocks that are disposed in the horizontal direction and in the vertical direction with respect to the one block.

Abstract: A direct type backlight unit disposed under a liquid crystal panel includes a backlight module including a printed circuit board including blocks arranged in an M×N matrix, in which M and N are natural numbers of 2 or greater, light emitting devices disposed on the printed circuit board such that at least one light emitting device is disposed in each block, each of the light emitting devices including light emitting cells disposed on a single substrate, and optical members disposed on the light emitting devices, each of the optical members being configured to change a light beam distribution of a corresponding light emitting device, and a backlight control module configured to control dimming levels of the light emitting devices and to independently control the light emitting devices disposed in different blocks.

Abstract: A display device includes a display panel and a backlight unit configured to provide light towards the display panel. The backlight unit includes a backlight module including multi junction technology (MJT) light emitting diodes (LEDs) disposed on blocks disposed on a printed circuit board, an operating power generator configured to generate a DC voltage based on an input voltage, and an operation controller configured to independently control an operation of each of the blocks, the operation controller disposed in an IC of drive circuits. Each of the blocks includes at least one of the MJT LEDs, a single anode, and a single cathode. Each of the MJT LEDs includes at least two light emitting cells disposed in a single LED chip, and anodes of the blocks are connected to the operating power generator, and cathodes of the blocks are directly connected to the IC of drive circuits.

Abstract: Disclosed herein is a light device of a vehicle including: a light emitting diode module emitting light; and a light guide plate having a side on which the light emitted from the light emitting diode module is incident and emitting the light incident on the side to perform surface emission upwardly, in which the light guide plate has a plane shape including at least one concave portion and the light emitting diode module is installed in the at least one concave portion. According to the exemplary embodiments of the present invention, when the light guide plate used in the light device installed at the rear of the vehicle to perform the surface emission is formed in a horseshoe shape or a ring shape, the light emitting diode module may be installed at a concave position of the horseshoe shape or the light emitting diode module may be installed along a ring-shaped inner side, thereby uniformly performing the surface emission over the whole of the light guide plate.

Abstract: A phase detector includes an alternating current input unit to which input power is applied; a zero cross generator that outputs a zero cross signal at a zero cross point of the input power by using a photo coupler; and a zero cross detector that converts the zero cross signal to a pulse signal and detects the phase of the input power based on the pulse signal. A compensation capacitor is connected in parallel at a first side of the photo coupler.

Abstract: A thin film deposition apparatus and a thin film deposition method using an electric field are provided. The thin film deposition apparatus includes: a first substrate; a plurality of electrodes in a 2D arrangement on the first substrate; and a solution provided on the plurality of electrodes and in which charged nanoparticles are distributed, wherein the charged nanoparticles are selectively deposited on at least a part of the plurality of electrodes by independently applying a voltage to each of the plurality of electrodes.

Abstract: An image forming apparatus includes a phase controller for controlling input power applied to a heating body through phase control. The image forming apparatus includes a fuser having the heating body, a switching unit supplying the input power to the heating body, and a phase controller determining an input phase of the input power based on a temperature of the fuser, in which the phase controller further controls the switching unit to vary a phase of the input power supplied to the heating body within a phase range set based on the input phase, for each control cycle of the input power.

Abstract: A phase detector includes an alternating current input unit to which input power is applied; a zero cross generator that outputs a zero cross signal at a zero cross point of the input power by using a photo coupler; and a zero cross detector that converts the zero cross signal to a pulse signal and detects the phase of the input power based on the pulse signal. A compensation capacitor is connected in parallel at a first side of the photo coupler.

Abstract: Embodiments of the disclosure provide a backlight module using MJT LEDs and a backlight unit including the same. More specifically, embodiments of the disclosure provide a backlight module, which includes MJT LEDs configured to increase an effective light emitting area of each of light emitting cells and optical members capable of uniformly dispersing light emitted from the MJT LEDs. In addition, embodiments of the disclosure provide a backlight unit using the backlight module, thereby reducing the number of LEDs constituting the backlight unit while allowing operation at low current.

Abstract: A thin film deposition apparatus and a thin film deposition method using an electric field are provided. The thin film deposition apparatus includes: a first substrate; a plurality of electrodes in a 2D arrangement on the first substrate; and a solution provided on the plurality of electrodes and in which charged nanoparticles are distributed, wherein the charged nanoparticles are selectively deposited on at least a part of the plurality of electrodes by independently applying a voltage to each of the plurality of electrodes.

Abstract: Embodiments of the disclosure provide a backlight module using MJT LEDs and a backlight unit including the same. More specifically, embodiments of the disclosure provide a backlight module, which includes MJT LEDs configured to increase an effective light emitting area of each of light emitting cells and optical members capable of uniformly dispersing light emitted from the MJT LEDs. In addition, embodiments of the disclosure provide a backlight unit using the backlight module, thereby reducing the number of LEDs constituting the backlight unit while allowing operation at low current.

Abstract: A backlight unit includes: a light guide plate of an entirely flat structure; a light emitting element disposed on at least one side of the light guide plate; a first reflection part disposed under the light guide plate and having one side thereof extended to a region where the light emitting element is positioned; a second reflection part disposed on the light emitting element; and a housing for accommodating the light guide plate, the light emitting element, and the first and second reflection parts, wherein the housing has a second side which is vertically extended upwards with respect to a first side which defines a lateral cross section of the housing in which the light emitting element is accommodated as the lower side, and a third side which is vertically extended inwards with respect to the second side.

Abstract: Disclosed is a light source module capable of realizing a slim structure and providing excellent luminous efficiency. The light source module includes a circuit board, a light emitting diode chip mounted on the circuit board by flip-chip bonding or surface mount technology (SMT), a wavelength conversion layer disposed on the light emitting diode chip, and a reflector covering an upper surface and at least one of side surfaces of the light emitting diode chip.

Abstract: A backlight unit includes: a light guide plate of an entirely flat structure; a light emitting element disposed on at least one side of the light guide plate; a first reflection part disposed under the light guide plate and having one side thereof extended to a region where the light emitting element is positioned; a second reflection part disposed on the light emitting element; and a housing for accommodating the light guide plate, the light emitting element, and the first and second reflection parts, wherein the housing has a second side which is vertically extended upwards with respect to a first side which defines a lateral cross section of the housing in which the light emitting element is accommodated as the lower side, and a third side which is vertically extended inwards with respect to the second side.