Patent ID: 7288883
Filing Date: 2007-10-30
Classification: H01J

Abstract:
1. A flat panel display device comprising: first and second substrates facing each other and separated by a predetermined distance; a sealant sealing the first and the second substrates to one another; a plurality of electron emission sources arranged at the first substrate; a light emission unit arranged at the second substrate; and a grid electrode disposed between the first and the second substrates to control the focusing of the electrons, wherein the grid electrode comprises: a mask portion with apertures through which electrons may pass; and a plurality of fixtures arranged around the perimeter of the mask portion and defining a predetermined margin for allowing the thermal expansion of the mask portion, wherein each fixture comprises: a fixation frame externally attached to the mask portion; and a fixation piece penetrating the respective fixation frame and placed between the first and the second substrates, wherein the mask portion is generally of a rectangular shape defined by a rectangle with a pair of long sides and a pair of short sides, wherein the plurality of fixation frames comprise first and second frames provided at either end of each of the long sides of the rectangle and third frames provided midway along each of the long sides.