Abstract:
A spacer disposed between first and second substrates of an electron emission display is provided. The spacer includes a main body and a heat dissipation layer formed on a side surface of the main body.
Abstract:
A spacer which can effectively discharge secondary electrons and an electron emission display having the spacer include: a main body disposed between first and second substrates which have first and second electrode layers, respectively; and a coating layer formed on a side surface of the main body. The coating layer has a first portion contacting one of the first and second electrode layers and a second portion formed on a central portion of the side surface of the main body. A thickness of the first portion is greater than that of the second portion.
Abstract:
An electron emission display includes first and second substrates facing each other to form a vacuum envelope, a plurality of driving electrodes formed on the first substrate, a plurality of electron emission regions controlled by the driving electrodes, a focusing electrode disposed on and insulated from the driving electrodes and provided with first openings through which electron beams pass, a plurality of phosphor layers formed on a surface of the second substrate, an anode electrode formed on surfaces of the phosphor layers, and a plurality of spacers for maintaining a gap between the first and second substrates. The focusing electrode includes second openings for forming a potential control unit for forming a potential well, the potential control unit being formed between the first openings to correspond to the spacers. The potential well attracts the electron beams, improving the directionality of the beams.
Abstract:
A field emission display device includes: a first substrate; an electron emission assembly arranged on the first substrate; a second substrate arranged a predetermined distance from the first substrate, the first and second substrates forming a vacuum space; an illumination assembly arranged on the second substrate, the illumination assembly being illuminated by electrons emitted from the electron emission assembly; and a mesh grid and above the electron emission assembly.
Abstract:
An electron emission display and a method of controlling the same, in which a voltage applied between a cathode electrode and a gate electrode is adjusted according to an image level, includes: a pixel portion having a plurality of electron emission devices formed adjacent to a region where a plurality of data lines intersects a plurality of scan lines; a data driver supplying a data signal corresponding to video data to the plurality of data lines; a scan driver supplying scan signals to the plurality of scan lines in sequence; a power supply supplying power to the data driver and the scan driver; and a voltage level controller controlling a voltage difference between an cathode electrode and a gate electrode of the electron emission device on the basis of an image level corresponding to the video data. With this configuration, a contrast of an image is high in the case of a low image level and a power consumption is limited in the case of a high image level, and an electron emission device is prevented from deterioration.
Abstract:
An electron emission device includes a first electrode having a data signal applied thereto, a second electrode having a scan signal applied thereto, an electron emitter for emitting electrons in response to a voltage difference between the data signal and the scan signal, and a third electrode having a focusing signal for focusing the electrons emitted from the electron emitter. In the electron emission device, an off-voltage of the scan signal is set lower than an on-voltage of the data signal.
Abstract:
An electron emission display includes first and second substrates facing each other to form a vacuum envelope, a plurality of driving electrodes formed on the first substrate, a plurality of electron emission regions controlled by the driving electrodes, a focusing electrode disposed on and insulated from the driving electrodes and provided with first openings through which electron beams pass, a plurality of phosphor layers formed on a surface of the second substrate, an anode electrode formed on surfaces of the phosphor layers, and a plurality of spacers for maintaining a gap between the first and second substrates. The focusing electrode includes second openings for forming a potential control unit for forming a potential well, the potential control unit being formed between the first openings to correspond to the spacers. The potential well attracts the electron beams, improving the directionality of the beams.
Abstract:
An electron emission device includes a first electrode having a data signal applied thereto, a second electrode having a scan signal applied thereto, an electron emitter for emitting electrons in response to a voltage difference between the data signal and the scan signal, and a third electrode having a focusing signal for focusing the electrons emitted from the electron emitter. In the electron emission device, an off-voltage of the scan signal is set lower than an on-voltage of the data signal.
Abstract:
A flat panel display having a mesh grid assembly which includes upper and lower spacers integral therein. The flat panel display includes a faceplate and a backplate provided opposing one another with a predetermined gap therebetween to define an exterior of the display. An illuminating assembly is provided in the display, the illuminating assembly realizing predetermined images. A mesh grid is provided between the backplate and the faceplate. A lower spacer is connected to a surface of the mesh grid opposing the backplate to be supported by the backplate. Upper spacers are connected to a surface of the mesh grid opposing the faceplate to be supported by the faceplate. The mesh grid, the lower spacer, and the upper spacers thereby integrally forming a single structural assembly.
Abstract:
An electron emission display includes first and second substrates facing each other, a plurality of driving electrodes formed on the first substrate, a plurality of electron emission regions controlled by the driving electrodes, a focusing electrode disposed on and insulated from the driving electrodes and provided with openings through which electron beams pass, a plurality of phosphor layers formed on a surface of the second substrate, an anode electrode formed on surfaces of the phosphor layers, and a plurality of spacers for maintaining a gap between the first and second substrates. Among the electron emission regions disposed in the opening adjacent to the spacer, one electron emission region, which is closest to the adjacent spacer, is spaced apart from an inner wall of the opening by a first distance that is different from a second distance from another electron emission region, which is farthest from the adjacent spacer, to the inner wall of the opening.