Patent application number | Description | Published |
20080197773 | FILTER AND PLASMA DISPLAY DEVICE THEREOF - The present invention relates to a plasma display device, and a filter formed in a plasma display panel includes an external light shielding sheet which includes a base unit, and a plurality of pattern units that are formed on the base unit, wherein an angle between an electrode that is formed on the substrate adjacent to the filter and the pattern unit is 5° or less. | 08-21-2008 |
20080204371 | FILTER AND FLAT PANEL DISPLAY DEVICE USING THE FILTER - A filter and a plasma display device using the filter are provided. The plasma display device includes a plasma display panel (PDP) which includes an upper substrate and a lower substrate that are coupled to each other; and a filter which is disposed on the upper substrate. The filter includes an external light shield sheet which includes a base unit and a plurality of pattern units that are formed in the base unit, and a distance between bottoms of a pair of adjacent electrodes that are formed on the upper substrate is 2.5-12 times greater than a distance between a pair of adjacent pattern units. Since the plasma display device includes the external light shielding sheet which can absorb and shield as much external light incident upon the PDP as possible, the plasma display device can effectively realize black images and enhance bright room contrast. Since the distance between the pair of adjacent pattern units of the external light shielding sheet is within a predetermined percentage range of the distance between a pair of adjacent black matrices formed on the PDP or the width of the pattern units of the external light shielding sheet is a predetermined percentage range of the width of black matrices formed on the PDP, the plasma display device can reduce the probability of occurrence of the moire phenomenon and enhance the luminance of images displayed by the PDP. | 08-28-2008 |
20080272681 | EXTERNAL LIGHT SHIELDING SHEET AND PLASMA DISPLAY PANEL DEVICE HAVING THE SAME - The present invention relates to an external light shielding sheet and a plasma display panel device having the external light shielding sheet. The plasma display panel device of the present invention includes: a plasma display panel; and an external light shielding sheet having a base portion having a groove, and a pattern portion formed in the groove of the base portion, wherein an upper end of the pattern portion is arranged nearer the panel than a lower end of the pattern portion, the lower end being broader in width than the upper end. | 11-06-2008 |
20080272697 | FILTER AND PLASMA DISPLAY DEVICE THEREOF - The present invention relates to a filter and a plasma display device thereof, and the plasma display device includes: a plasma display panel; an EMI shielding sheet, wherein shielding layers including three or more thin film layers are repeatedly stacked; and a sheet for protecting external light having a base unit of which one side is formed with a plurality of grooves and a plurality of pattern units formed inside the grooves of the base unit and having a different refractive index from that of the base unit. | 11-06-2008 |
20090026909 | FILTER AND PLASMA DISPLAY DEVICE THEREOF - The present invention relates to a filter and a plasma display device thereof, and the filter includes: a base unit; and an external light shielding sheet including a plurality of pattern units each formed spaced from the base unit to absorb external light, wherein the base unit includes dye and pigment absorbing light in a specific wavelength region. | 01-29-2009 |
20090026951 | FILTER AND PLASMA DISPLAY DEVICE THEREOF - The present invention relates to a plasma display device. The plasma display device is formed on a upper substrate side of a panel and includes a first base layer; a second base layer having refractive index smaller than that of the first base layer; and a sheet for protecting external light including a plurality of pattern units formed to be spaced from each other between the first and second base layers, wherein an interval between two pattern units adjacent each other of the plurality of pattern units being larger than a height of the pattern unit. | 01-29-2009 |
20090145654 | ELECTROMAGNETIC SHIELDING SHEET, PLASMA DISPLAY APPARATUS USING THE SAME, AND RELATED TECHNOLOGY - There are provided an electromagnetic shielding sheet and a plasma display apparatus. The electromagnetic shielding sheet includes a base sheet; a first layer on a first surface of the base sheet, the first layer including first and second patterns crossing each other; and a second layer on a second surface of the base sheet, the second layer including a third pattern. The first and second patterns include a conductive material, the third pattern includes a light absorbing material, and at least one of the first and second patterns is grounded. Accordingly, conductive patterns for shielding electromagnetic waves and blocking external light are formed on a first surface of a base sheet, and patterns for blocking external light are formed on a second surface of the base sheet, so that the functions of shielding electromagnetic waves and blocking external light can be simultaneously performed using one sheet, and therefore, the ambient contrast ratio of a display image can be enhanced without increasing manufacturing costs. Further, patterns for shielding electromagnetic waves are directly formed a glass member of a filter or an upper substrate of the panel, so that processes of forming an electromagnetic shielding sheet can be easily performed. | 06-11-2009 |
20090295686 | FILTER AND PLASMA DISPLAY DEVICE THEREOF - A plasma display device is provided. The plasma display device includes a plasma display panel (PDP) which includes an upper substrate on which a plurality of black matrices are formed; and an external light shielding sheet which is disposed at a front of the PDP and includes a base unit and a plurality of pattern units that are formed on the base unit and that have a lower refractive index than the base unit. A distance between a pair of adjacent black matrices is 4-12 times greater than a distance between a pair of adjacent pattern units. Therefore, it is possible for a plasma display device to effectively realize black images and enhance bright room contrast with the aid of an external light shielding sheet which is disposed at a front of a PDP and which absorbs and shields as much external light incident upon the PDP as possible. Also, it is possible to reduce the probability of occurrence of the moire phenomenon and enhance the luminance of images displayed by a PDP by forming a plurality of pattern units on an external light shielding sheet so that the distance between the pair of adjacent pattern units can fall within a predetermined percentage range of the distance between the pair of adjacent black matrices formed on a PDP, or that the width of the pattern units can fall within a predetermined percentage range of the width of black matrices formed on the PDP. | 12-03-2009 |
20100019994 | FILTER AND PLASMA DISPLAY DEVICE THEREOF - A plasma display device is provided. The plasma display device includes a plasma display panel (PDP) and a filter which is disposed at a front of the PDP. The filter includes an external light shielding sheet which includes a base unit and a plurality of pattern units that are formed on the base unit and that have a lower refractive index than the base unit. A distance between tops of a pair of adjacent pattern units is 1 3.25 times greater than a distance between bottoms of the pair of adjacent pattern units. Therefore, it is possible for a plasma display device to effectively realize black images and enhance bright room contrast with the aid of an external light shielding sheet which is disposed at a front of a PDP and which absorbs and shields as much external light incident upon the PDP as possible. Also, it is possible to secure an optimum opening ratio for a PDP and enhance the luminance of images displayed by a PDP by forming a plurality of pattern units on an external light shielding sheet so that the distance between the bottoms of the pair of adjacent pattern units can fall within a predetermined percentage range of the distance between the tops of the pair of adjacent pattern units. | 01-28-2010 |
20100264818 | FILTER AND PLASMA DISPLAY DEVICE THEREOF - A plasma display device is provided. The plasma display device includes a plasma display panel (PDP) and a filter which is formed at a front of the PDP. The filter includes an external light shielding sheet which includes a base unit and a plurality of pattern units that are formed on the base unit and that have a lower refractive index than the base unit. Each of the pattern units includes at least one curved edge. Therefore, it is possible for a plasma display device to effectively realize black images and enhance bright room contrast with the aid of an external light shielding sheet which is disposed at a front of a PDP and which absorbs and shields as much external light incident upon the PDP as possible. Also, it is possible to secure an optimum opening ratio for a PDP and enhance the luminance of images displayed by a PDP by forming a plurality of pattern units on an external light shielding sheet so that the distance between the bottoms of the pair of adjacent pattern units can fall within a predetermined percentage range of the distance between the tops of the pair of adjacent pattern units. | 10-21-2010 |
20110080084 | FILTER, PLASMA DISPLAY DEVICE THEREOF, AND RELATED TECHNOLOGIES - A display apparatus includes a plasma display panel (PDP) and a filter. The PDP has a display surface, and the filter has a panel side facing the display surface of the PDP and an opposing viewer side facing away from the display surface. The filter includes a base unit. The filter also includes pattern units that absorb external light from the viewer side. The pattern units have boundaries that define widths of pattern tops and widths of pattern bottoms. A distance between a pattern top and a pattern bottom defines a pattern height. A distance between adjacent boundaries, of a pair of adjacent pattern units, at adjacent pattern bottoms can be less than a distance between the adjacent boundaries at adjacent pattern tops, less than the pattern height, and greater than a width of at least one of the pattern bottoms. | 04-07-2011 |