Abstract: Disclosed is a carbon-based composite particle for an electron emission source comprising: a particle of a material selected from the group consisting of metals, oxides, and ceramic materials; and a carbon-based material such as a carbon nanotube which is partially buried inside of the particle and which partially protrudes from the surface of the particle.

Abstract: Provided is a method of manufacturing an electron emission device. The method includes: forming electron emission sources including a carbon-based material; and emitting electrons from the electron emission sources in a chamber containing a gas. Accordingly, an electron emission display device employing the electron emission device can improve uniformity between pixels and increase device lifespan.

Abstract: In a liquid crystal display, a plurality of gate lines and data lines are provided on a first substrate including a display area as a screen, and a peripheral area external to the display area wherein a plurality of pixel electrodes are electrically connected to the gate lines and to the data lines, and some of the pixel electrodes extend to be located in the peripheral area; and optionally, a black matrix is formed on a second substrate disposed opposite to the first substrate for screening the extended portions of the pixel electrodes located in the peripheral area, a rubbing direction of aligning films is formed on the first and the second substrates towards the extended portions of the pixel electrodes located in the peripheral area so that impurity ions on the surface of the aligning film travel along the rubbing direction to stop at the extended portions of the pixel electrode, and an image defect area caused by the impurity ions is screened with the black matrix.

Abstract: An electron emission device that is driven at a low voltage has lower power consumption, and can be mass-produced. An electron emission display device includes the electron emission device, The electron emission device includes: a base substrate; a cathode electrode disposed on the base substrate; an electron emission source disposed on the cathode electrode; a data electrode disposed above the electron emission source; a scan electrode disposed above the data electrode; and insulating layers insulating each electrode from the other electrodes. A method of driving the electron emission device includes maintaining a voltage at the cathode electrode of below 0 V or a ground level, maintaining a positive voltage at the scan electrode, and maintaining a voltage at the data electrode of below 0 V; and intermittently providing a positive voltage at the data electrode for a predetermined period of time such that electrons can travel toward the scan electrode for the predetermined period of time.

Abstract: In a liquid crystal display, a plurality of gate lines and data lines are provided on a first substrate including a display area as a screen, and a peripheral area external to the display area wherein a plurality of pixel electrodes are electrically connected to the gate lines and to the data lines, and some of the pixel electrodes extend to be located in the peripheral area; and optionally, a black matrix is formed on a second substrate disposed opposite to the first substrate for screening the extended portions of the pixel electrodes located in the peripheral area, a rubbing direction of aligning films is formed on the first and the second substrates towards the extended portions of the pixel electrodes located in the peripheral area so that impurity ions on the surface of the aligning film travel along the rubbing direction to stop at the extended portions of the pixel electrodes, and an image defect area caused by the impurity ions is screened with the black matrix.

Abstract: An electron emission source including a carbon-based material coated with metal carbide in the surface coating layer, of which the metal has a negative Gibbs free energy when forming the metal carbide at 1,500 K or lower, a method of preparing electron emission sources, and an electron emission device including the electron emission source. The electron emission source includes a carbon nanotube coated with metal carbide or a carbon nanotube having a metal carbide layer and a metal coating layer, which are sequentially formed thereon. Thus, the electron emission source has long lifespan without deterioration of electron emitting characteristics. The electron emission source can be used to manufacture electron emission devices with improved reliability.

Abstract: An electron emission source including a carbon-based material and a UV shielding material, a method of preparing the same, and an electron emission device using the electron emission source are provided. The UV shielding material is added to an electron emission source forming composition to more easily control the sharpness of an electron emission source tip. The electron emission source composition may include a carbon-based material, a vehicle including a resin and a solvent, and a UV shielding material.

Abstract: A method and apparatus for accumulative vector drawing are provided. The method includes receiving a graphics command, accumulating the graphics command, and rendering the graphics command in an order reverse to an order in which the graphics command was stored, and when the graphics command is a valid definite drawing command, calculating a clipping area of the valid definite drawing command and reflecting the clipping area when rendering graphics commands rendered after the valid definite drawing command.

Abstract: The present invention provides a composition for forming an electron emission source comprising a carbon-based material and a vehicle comprising a resin component and a solvent component. The resin component is a material that has less than 0.5 wt % of carbon deposits after undergoing a heat treatment at 450° C. under nitrogen atmosphere. The present invention also provides a method of preparing an electron emission source using the composition for forming an electron emission source, and an electron emission source that is prepared using the electron emission source. The electron emission source prepared using the composition has a small amount of the carbon deposits which improves its electric current density and lengthens its lifespan.

Abstract: In a liquid crystal display, a plurality of gate lines and data lines are provided on a first substrate including a display area as a screen, and a peripheral area external to the display area wherein a plurality of pixel electrodes are electrically connected to the gate lines and to the data lines, and some of the pixel electrodes extend to be located in the peripheral area; and optionally, a black matrix is formed on a second substrate disposed opposite to the first substrate for screening the extended portions of the pixel electrodes located in the peripheral area, a rubbing direction of aligning films is formed on the first and the second substrates towards the extended portions of the pixel electrodes located in the peripheral area so that impurity ions on the surface of the aligning film travel along the rubbing direction to stop at the extended portions of the pixel electrodes, and an image defect area caused by the impurity ions is screened with the black matrix.

Abstract: A power glitch free internal voltage generation circuit includes: a voltage divider for dividing level of an internal voltage; a reference voltage generator generating a reference voltage having a predetermined voltage level by dividing a level of an external voltage; a comparator connected to the external voltage and the internal voltage and comparing the divided internal voltage with the reference voltage to generate a compared output; and a driver for supplying the external voltage to the internal voltage in response to the output of the comparator. In this manner, a high voltage level from either of the external voltage and the internal voltage is used as a source of the comparator. This, in turn, stably maintains the internal voltage because the driver for transferring the external voltage to the internal voltage is intercepted in the case where a glitch occurs that lowers the external voltage to a level lower than the internal voltage.

Abstract: The present invention relates to a method for forming an electron emission source for an electron emission device and an electron emission device produced by the method. The method for forming an electron emission source comprises: depositing at least one kind of charged particles selected from the group consisting of carbon-based materials, metal particles, inorganic particles, and organic materials to a substrate charged by the opposite charge. The method provides an electron emission source for an electron emission device upon which carbon nanotubes are selectively deposited in a desired pattern without leaving surplus organic carbon. The resulting electron emission devices exhibit excellent life and electron emission characteristics. The method does not require additional surface treatment.

Abstract: In a liquid crystal display, a plurality of gate lines and data lines are provided on a first substrate including a display area as a screen, and a peripheral area external to the display area wherein a plurality of pixel electrodes are electrically connected to the gate lines and to the data lines, and some of the pixel electrodes extend to be located in the peripheral area; and optionally, a black matrix is formed on a second substrate disposed opposite to the first substrate for screening the extended portions of the pixel electrodes located in the peripheral area, a rubbing direction of aligning films is formed on the first and the second substrates towards the extended portions of the pixel electrodes located in the peripheral area so that impurity ions on the surface of the aligning film travel along the rubbing direction to stop at the extended portions of the pixel electrodes, and an image defect area caused by the impurity ions is screened with the black matrix.

Abstract: A dynamic managing device and method thereof in which a memory for storing the off-screen data is automatically determined by means of an operation value obtained after performing a predetermined operation using a variable including a weight corresponding to each memory included in the off-screen data, thereby avoiding the need for a user to personally determine which memory should be used for storing the off-screen data and, thus, improving the convenience to the user. The off-screen data can be transferred to other memories by means of a variable value included in the off-screen data after the off-screen data are stored in a predetermined memory. Therefore, it is possible to improve performance of a system.

Abstract: A method of forming a carbon nanotube emitter includes: forming a carbon nanotube composite on a substrate with a predetermined shape, coating surface treating material in a liquid phase on the carbon nanotube composite and drying the surface treating material, and peeling the dried surface treating material off of the carbon nanotube composite.

Abstract: Disclosed is an electron emission source composition for a field emission display device including 1 to 20% by weight of carbon nano tubes; glass frit; an organic binder resin comprising ethyl cellulose and acrylate resin and/or acryl resin; and an organic solvent, wherein the glass frit is present in an amount of 1 to 500 parts by weight with respect to 100 parts by weight of the carbon nano tubes.

Abstract: Disclosed is a composition for forming an electron emission source of a flat panel display device, and the electron emission source fabricated from the same. The composition includes one or more carbon series materials for electron emission with a purity of at least 95%, glass frit, a binder resin, and a solvent. The electron emission source fabricated from the composition for forming the electron emission source of the present invention has high electron emission efficiency.

Abstract: Disclosed is a carbon-based composite particle for an electron emission source comprising: a particle of a material selected from the group consisting of metals, oxides, and ceramic materials; and a carbon-based material such as a carbon nanotube which is partially buried inside of the particle and which partially protrudes from the surface of the particle.

Abstract: Disclosed is an electron emission source composition for a field emission display device including 1 to 20% by weight of carbon nano tubes; glass frit; an organic binder resin comprising ethyl cellulose and acrylate resin and/or acryl resin; and an organic solvent, wherein the glass frit is present in an amount of 1 to 500 parts by weight with respect to 100 parts by weight of the carbon nano tubes.

Abstract: A power glitch free internal voltage generation circuit includes: a voltage divider for dividing level of an internal voltage; a reference voltage generator generating a reference voltage having a predetermined voltage level by dividing a level of an external voltage; a comparator connected to the external voltage and the internal voltage and comparing the divided internal voltage with the reference voltage to generate a compared output; and a driver for supplying the external voltage to the internal voltage in response to the output of the comparator. In this manner, a high voltage level from either of the external voltage and the internal voltage is used as a source of the comparator. This, in turn, stably maintains the internal voltage because the driver for transferring the external voltage to the internal voltage is intercepted in the case where a glitch occurs that lowers the external voltage to a level lower than the internal voltage.