Abstract: A color gamut conversion device includes: a target color coordinate converter configured to convert each RGB value of red (R), green (G), blue (B), cyan (C), magenta (M), yellow (Y), and white (W) of a target color coordinate into a tristimulus value XYZ; a reference conversion matrix generator configured to generate a first reference conversion matrix for converting each tristimulus value XYZ into an R?G?B? value according to a color gamut of a reference display; a low power corrected value calculator configured to calculate a low power corrected value for correcting the R?G?B? value; a lookup table (LUT) generator configured to generate an LUT including an R?G?B? value corresponding to each RGB value by using a second reference conversion matrix that the low power corrected value is applied to the first reference conversion matrix; and a color gamut converter configured to convert image data of the RGB values into image data of the R?G?B? values using the LUT.

Abstract: The present invention relates to a field emission apparatus and a method of driving the field emission apparatus, which has a three-pole structure of dual emitters formed on both first and second electrodes of a rear substrate in order to obviate a distinction between a gate and a cathode, thus enabling dual field emission. In such a field emission apparatus, a ground is formed between an anode and a point of the first and second electrodes of the rear substrate, and a square wave is applied thereto in order to alternately generate field emission in the first and second electrodes, thus increasing a light-emitting area and emission efficiency, decreasing a driving voltage and consumption power, saving the manufacturing cost and manufacturing time, and accomplishing a longer lifespan.

Abstract: The field emission device includes: a front substrate and a rear substrate which are disposed at a certain distance and opposite to each other; at least one or more cathode electrodes formed on the rear substrate; at least one or more gate electrodes formed to be distant from the cathode electrodes and to be insulated with the rear substrate; emitters formed on the upper surfaces of the cathode electrodes; an anode electrode formed on the front substrate toward the rear substrate side; a fluorescent layer formed on the anode electrode; a first voltage application circuit for applying an AC voltage to the anode electrode; and a second voltage application circuit for applying an AC voltage to the gate electrode, wherein the AC voltages being applied to the anode electrode and the gate electrode are synchronized.

Abstract: A constant current driving circuit for a field emission device has a ground current of an anode electrode measured in real time and the measured ground current is fedback to vary the frequency and duty ratio of a voltage applied to gate and cathode electrodes of the field emission device, thereby causing the ground current of the anode electrode to be constantly maintained. The field emission device has an anode electrode formed on a front substrate, gate and cathode electrodes formed on a rear substrate disposed opposite to the front substrate to be spaced apart from the front substrate by a predetermined distance, and an emitter formed on a top surface of the cathode electrode.

Abstract: The present invention relates to a field emission device. More specifically, the present invention may prohibit unnecessary voltage from being applied to an anode electrode during non-operating time that no voltage is applied to a gate electrode to reduce driving power, prohibit electrons from being emitted with unnecessary high voltage which is applied to the anode electrode to increase luminous efficiency, and reduce a time that unnecessary high voltage is applied to the anode electrode to extend life time of the field emission device, by applying AC voltage to the anode electrode to correspond to a time that voltage is applied to the gate electrode and a type of voltage which is applied to the gate electrode.

Abstract: The present invention relates to a field emission apparatus and a method of driving the field emission apparatus, which has a three-pole structure of dual emitters formed on both first and second electrodes of a rear substrate in order to obviate a distinction between a gate and a cathode, thus enabling dual field emission. In such a field emission apparatus, a ground is formed between an anode and a point of the first and second electrodes of the rear substrate, and a square wave is applied thereto in order to alternately generate field emission in the first and second electrodes, thus increasing a light-emitting area and emission efficiency, decreasing a driving voltage and consumption power, saving the manufacturing cost and manufacturing time, and accomplishing a longer lifespan.

Abstract: A liquid crystal display (LCD) monitor comprises: a front casing; an LCD assembly combined with or joined to the rear of the front casing; a printed circuit board (PCB) assembly transmitting electrical signals to the LCD assembly; and a support including an LCD support part combined with or joined to the front casing and positioned at the rear of the LCD assembly against the front casing, and a board accommodating part integrated with the LCD support part in a single body and accommodating the PCB assembly therein. With this configuration, the present invention simplifies the assembly process and reduces the cost of production by reducing the components thereof.

Abstract: A liquid crystal display (LCD) monitor comprises: a front casing; an LCD assembly combined with or joined to the rear of the front casing; a printed circuit board (PCB) assembly transmitting electrical signals to the LCD assembly; and a support including an LCD support part combined with or joined to the front casing and positioned at the rear of the LCD assembly against the front casing, and a board accommodating part integrated with the LCD support part in a single body and accommodating the PCB assembly therein. With this configuration, the present invention simplifies the assembly process and reduces the cost of production by reducing the components thereof.

Abstract: A securing structure for VESA cover of a LCD monitor. The securing structure has a rear cover, a VESA cover, a shield, and a plurality of extended nuts. The rear cover has a depression formed on a predetermined location of the rear surface. A plurality of first through holes are formed at an indented portion of the depression. The VESA cover has a plurality of second through holes formed at locations corresponding to the first through holes and the second through holes engage the depression of the rear cover. The shield is placed at inner side of the rear cover and has a plurality of third through holes at locations corresponding to the first and the second through holes. The extended nuts are inserted into the third holes of the shield. Engaging screws penetrate the first and the second through holes and engage the extended nuts so that said VESA cover is installed onto the squared depression of the rear cover.

Abstract: A display device comprises a front case having a microphone hole, a rear case assembled with the front case into a single casing, an intermediary case positioned between the front case and the rear case, and a microphone. The intermediary case has a through hole at a position corresponding to the microphone hole. In one embodiment, the microphone is mounted adjacent to the microphone hole in the front case, and between the microphone hole and the through hole, with the front end of the microphone being directed to the microphone hole. In another embodiment, the microphone and its holder are both mounted in the front case.

Abstract: A support frame has second lugs at a location corresponding to the first lugs provided at corners of a CRT secured by the support frame. The support frame supports the weight of the CRT, and is disposed between the CRT and the rear case of a monitor. Each first lug and each second lug engage a front case by a means of bolt, securing the CRT and the support frame. A guide groove provided at the support frame and a guide portion push the front case outward, maintaining the outer form of the front case during and after assembly, and act as a guide when assembling the support frame and the front cover.

Abstract: A degaussing coil fixing technique in which, after inserting four shaping holders into a frame of a monitor, shaping a degaussing coil by the shaping holders and fixing the frame are simultaneously carried out while the frame is fixed onto a front cover by putting the degaussing coil on an electron tube. The shaping holder includes a seating part with an elastic force for fixing the degaussing coil by being bent to have a radius which is set to be integrally formed with a holder body of the shaping holder assembled to the frame in a body, and a hooking plate extending from a free end of the seating part for smoothly catching the degaussing coil to guide it to the seating part when assembling the frame and a front cover.

Abstract: In the installation and removal of a fastener cap for covering a fastener which makes a front cover constructed as a first cover and a back cover constructed as a second cover fixed to each other by a fastener such as screw, which would appear on the exterior of products, the fastener cap is easily disassembled from the covers without marring the exterior of products, while maintaining an attractive appearance thereof. A back cover 20 which is coupled to a front cover 10 by means of a screw fastener 40, includes a fastener well 21 having a front assembly groove 23 and a back assembly groove 25 into which a front assembly projection 31 and a back assembly projection 32 on fastener cap 30 are respectively inserted during assembly.