Patent application number | Description | Published |
20080317944 | Protecting layer, composite for forming the same, method of forming the protecting layer, plasma display panel comprising the protecting layer - A protecting layer is formed of a magnesium oxide and at least one additional component selected from the group consisting of a copper component selected from copper and a copper oxide, a nickel component selected from nickel and a nickel oxide, a cobalt component selected from cobalt and a cobalt oxide, and an iron component selected from iron and an iron oxide; a composite for forming the protecting layer; a method of forming the protecting layer; and a plasma display panel including the protecting layer. The protecting layer, which is used in a PDP, protects an electrode and a dielectric layer from a plasma ion generated by a gaseous mixture of Ne and Xe, or He, Ne, and Xe, and discharge delay time and dependency of the discharge delay time on temperature can be decreased and sputtering resistance can be increased. | 12-25-2008 |
20090058297 | PROTECTING LAYER COMPRISING MAGNESIUM OXIDE LAYER AND ELECTRON EMISSION PROMOTING MATERIAL, METHOD FOR PREPARING THE SAME AND PLASMA DISPLAY PANEL COMPRISING THE SAME - A protecting layer is formed of a magnesium oxide layer and electron emission promoting material formed on the magnesium oxide layer. The electron emission promoting material may be patterned on the magnesium oxide layer, or may be sprayed and heat-treated on the surface of the magnesium oxide layer. The protecting layer exhibits excellent electron emission characteristics while not being substantially damaged by plasma ions, thereby improving the reliability of a PDP. | 03-05-2009 |
20090153019 | Protecting layer having magnesium oxide particles at its surface, method of preparing the same, and plasma display panel comprising the protecting layer - Provided are a protecting layer for a plasma display panel (PDP), a method of forming the same, and a PDP including the protecting layer. The protecting layer includes a magnesium oxide-containing layer having a surface to which magnesium oxide-containing particles having a magnesium vacancy-impurity center (VIC) are attached. The protecting layer is resistant to plasma ions and has excellent electron emission effects, and thus, a PDP including the protecting layer can be operated at low voltage with high discharge efficiency. | 06-18-2009 |
20100060139 | MATERIAL FOR FORMING PROTECTIVE LAYER, METHOD OF PREPARING THE MATERIAL, AND PDP COMPRISING THE PROTECTIVE LAYER - Disclosed is a material for forming a protective layer, a protective layer employing the material and a PDP with the protective layer. Unlike conventional protective layers which employ MgO created in conditions of pressurized artificial gas, the instant protective layer uses MgO created by heating Mg and allowing it to oxidize naturally in air. The result is MgO with fewer defects that is more effective as a protective layer in many uses, such as in a PDP. The instant MgO also shows many specific spectral characteristics and contains impurities in amounts of less than about 2 ppm each. Also disclosed is a PDP which takes advantage of the advantages of the inventive protective layer. | 03-11-2010 |
20100164361 | PLASMA DISPLAY PANEL PROTECTIVE LAYER - A plasma display panel (PDP) protective layer including a ternary compound in the form of BaXO, wherein X is selected from the group consisting of Sc, Y, Gd, La, Er, Ho, Nd, Sm, and Ce. Such protective layer has excellent electron emission characteristics and phase stability. | 07-01-2010 |
20100308710 | MATERIAL FOR PREPARING PROTECTIVE LAYER AND PLASMA DISPLAY PANEL COMPRISING THE PROTECTIVE LAYER - A plasma display panel (PDP) including a protective layer and a material for preparing the protective layer that can be easily fabricated and has little defects, includes a magnesium oxide (MgO) powder including a cathode rays emission spectrum having a first emission peak in a wavelength in the range of 300 to 450 nm, a second emission peak in a wavelength in the range of 650 to 750 nm, and an intensity ratio between 1:0.15 and 0.40 as an intensity ratio of the second emission peak with respect to the first emission peak. | 12-09-2010 |
20150213831 | SPINDLE MOTOR AND HARD DISK DRIVE INCLUDING THE SAME - There are provided a spindle motor and a hard disk drive including the same. The spindle motor includes: a lower thrust member fixedly attached to a base member; a shaft having a lower end portion coupled to the lower thrust member and an upper end portion provided with a flange portion; a rotating member including a sleeve rotating based on the shaft; and a fixed member including a fitting protrusion protruding upwardly in an axial direction and fitted into and fixed to a fixation groove recessed upwardly from a lower end of the shaft in the axial direction and a flange caught by a lower surface of the lower thrust member. | 07-30-2015 |
20150323002 | HYDRODYNAMIC BEARING DEVICE, SPINDLE MOTOR HAVING THE SAME, AND RECORDING DISK DRIVING DEVICE - A hydrodynamic bearing device includes a stator and a rotor. The rotor forms a bearing clearance and a sealing part connected with the bearing clearance. A liquid-vapor interface is disposed in the sealing part together with the stator, and the bearing clearance is filled with a lubricating fluid. The stator and the rotor form a storage space connected with the sealing part to receive the lubricating fluid. The storage space has a region in which force applied to the liquid-vapor interface increases by a capillary phenomenon at a time that the lubricating fluid leaks to fill the bearing clearance. | 11-12-2015 |