Abstract:
This invention relates to a fluorescent screen structure wherein a plurality of first electrodes (for example stripelike selected electrodes) having a plurality of fluorescent substances (especially fluorescent substances of different colors for a color screen) severally deposited thereon and second electrodes (for example stripelike reverse bias electrodes not for electrodeposition) not having the fluorescent substances deposited thereon between these first electrodes are provided on a common base (especially a glass substrate for a fluorescent screen panel) and a field emission display (FED) using this and methods for manufacturing these. According to the invention, even in such cases as when pillars for supporting a high vacuum are formed in an FED, a uniform fluorescent screen can be obtained without the pillars constituting an obstruction and a fluorescent substance can be deposited in such a way that it will not subsequently impair the level of a vacuum in a display in which the fluorescent screen is used and also a fluorescent substance can be deposited in a pattern such as a narrow stripe pattern having fine widths and fine pitches highly precisely and without mixed colors and with good manufacturability.
Abstract:
A field-emission display has a phosphor panel assembly comprising a transparent electrode (12), a plurality of coated phosphor layers (15) disposed on said transparent electrode (12) for emitting light in response to bombardment of electron beams emitted from field-emission cathodes, a plurality of black insulating layers (13) disposed between said coated phosphor layers (15), and a plurality of conductive layers (14) disposed on said black insulating layers (13), respectively, between said coated phosphor layers (15) and electrically insulated from said transparent electrode (12) by said black insulating layer (13). The black insulating layers (13) provide a black mask between the phosphor layers to improve the contrast ratio, and the conductive layers are effective to increase the percentage of electron beam utilization, thus improving the quality and resolution of displayed images. These advantages can be achieved without making image display unstable due to charging-up of the black mask and straying of secondary electrons.
Abstract:
This invention relates to a fluorescent screen structure wherein a plurality of first electrodes (for example stripelike selected electrodes) having a plurality of fluorescent substances (especially fluorescent substances of different colors for a color screen) severally deposited thereon and second electrodes (for example stripelike reverse bias electrodes not for electrodeposition) not having the fluorescent substances deposited thereon between these first electrodes are provided on a common base (especially a glass substrate for a fluorescent screen panel) and a field emission display (FED) using this and methods for manufacturing these. According to the invention, even in such cases as when pillars for supporting a high vacuum are formed in an FED, a uniform fluorescent screen can be obtained without the pillars constituting an obstruction and a fluorescent substance can be deposited in such a way that it will not subsequently impair the level of a vacuum in a display in which the fluorescent screen is used and also a fluorescent substance can be deposited in a pattern such as a narrow stripe pattern having fine widths and fine pitches highly precisely and without mixed colors and with good manufacturability.
Abstract:
A method of forming a fluorescent screen for a field emission display by electrodeposition comprises: forming a transparent solid electrode or transparent stripe or dot electrodes (1) in an effective area and a guard electrode (3, 8) in an ineffective area surrounding the effective area on the inner surface of a screen panel (13), immersing the screen panel (13) in an electrodeposition solution (12G, 12B, 12R, 12M) containing dispersed particles of a fluorescent material and contained in an electrodeposition tank (11), applying a voltage to the transparent solid electrode or the transparent stripe or dot electrodes, and a reverse bias voltage to the guard electrode (3, 8) to deposit particles of the fluorescent material only on the transparent solid electrode or the transparent stripe or dot electrodes to which the voltage is applied. The guard electrode (3, 8) prevents the deposition of particles of the fluorescent material in the ineffective area.
Abstract:
A method of forming a fluorescent screen for a field emission display by electrodeposition comprises: forming a transparent solid electrode or transparent stripe or dot electrodes (1) in an effective area and a guard electrode (3, 8) in an ineffective area surrounding the effective area on the inner surface of a screen panel (13), immersing the screen panel (13) in an electrodeposition solution (12G, 12B, 12R, 12M) containing dispersed particles of a fluorescent material and contained in an electrodeposition tank (11), applying a voltage to the transparent solid electrode or the transparent stripe or dot electrodes, and a reverse bias voltage to the guard electrode (3, 8) to deposit particles of the fluorescent material only on the transparent solid electrode or the transparent stripe or dot electrodes to which the voltage is applied. The guard electrode (3, 8) prevents the deposition of particles of the fluorescent material in the ineffective area.
Abstract:
A field-emission display has a phosphor panel assembly comprising a transparent electrode (12), a plurality of coated phosphor layers (15) disposed on said transparent electrode (12) for emitting light in response to bombardment of electron beams emitted from field-emission cathodes, a plurality of black insulating layers (13) disposed between said coated phosphor layers (15), and a plurality of conductive layers (14) disposed on said black insulating layers (13), respectively, between said coated phosphor layers (15) and electrically insulated from said transparent electrode (12) by said black insulating layer (13). The black insulating layers (13) provide a black mask between the phosphor layers to improve the contrast ratio, and the conductive layers are effective to increase the percentage of electron beam utilization, thus improving the quality and resolution of displayed images. These advantages can be achieved without making image display unstable due to charging-up of the black mask and straying of secondary electrons.
Abstract:
PROBLEM TO BE SOLVED: To provide a display panel capable of reducing deterioration of display quality due to different light distribution characteristics, and a display unit including the display panel.SOLUTION: The display panel comprises, on a wiring substrate: a mounting substrate on which a plurality of light-emitting elements having emission wavelengths different to each other are mounted for each pixel; and a counter substrate disposed opposite to a pixel side face of the mounting substrate. The counter substrate includes, on a pixel side face of a light transmissive substrate, a light-blocking layer having an opening in a position opposite to each of the light-emitting elements, and a light diffusion layer that blocks each opening, is provided on a light-emitting element side face of the light-blocking layer, and that is at least in contact with an edge of each opening. A gap is formed between the light diffusion layer and the light-emitting element.
Abstract:
PROBLEM TO BE SOLVED: To provide a light source module which will not increase a drive voltage or the number of drive circuits, even when the number of light-emitting diodes is increased, and can be driven by a simple drive circuit without lowering a lifetime of the light-emitting diode, its manufacturing method, a light source device using this light source module, and to provide a liquid crystal display device using this light source device. SOLUTION: In the light source module mounting the light-emitting diode, in at least a kind of light-emitting diode L, a pair S in which a given number (for example, 2 pieces) of light-emitting diodes are parallel connected is formed, and a plurality (for example, 5 pieces) of pairs S are series connected. In each of the pairs S 1 to S 5 , light-emitting diodes La 1 and Lb 1 , La 2 and Lb 2 , La 3 and Lb 3 , La 4 and Lb 4 , La 5 and Lb 5 are configured to have mutually substantially identical current - voltage characteristic. The light-emitting diode having substantially the identical characteristics is selected, based on positional information on a wafer in which the light-emitting diode is formed. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a field emission element improved in electron emission efficiency by forming an electron emission layer, an insulation layer and a gate electrode on a supporting body in that order, by forming an opening part in the gate electrode and the insulation layer and by forming a fine uneven part on the surface of a part of the electron emission layer exposed at the bottom of the opening. SOLUTION: An electron emission layer 11 extending in one direction in a stripe-like form, an insulation layer 13 and a gate electrode 15 extending in the direction perpendicular to the electron emission layer 11 in a stripe-like form are formed on a supporting body 10 in that order, an opening part 14 is formed in the gate electrode 15 and the insulation layer 13, and a fine uneven part 12 is formed in a part of the electron emission layer 11 exposed at the bottom of the opening 14. A large electric field is applied to the projecting parts of the fine uneven part 12 of the electron emission layer 11 from the gate electrode 15. At that time, the electric field concentrating on the projecting parts is large compared with the case that the surface of the electron emission layer 11 is smooth, so that electrons are efficiently emitted from the projecting parts by a quantum tunneling effect. The improvement in luminance can be expected when this element is incorporated in a display device.
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of an electron emission device, which shows excellent electron-emission characteristics in a low voltage and has greatly improved shape precision of an emitter electrode and precision of a position where the emitter electrode is formed. SOLUTION: This manufacturing method of an electron emission device is so composed that a conductive layer is laminated on a cathode electrode 9 through an insulating layer 10, and primary opening 20 is formed on the conductive layer, and secondary opening 8, from which the cathode electrode 9 is exposed, is formed, as it is connected to the primary opening 20, and also an emitter electrode 12 is formed on the cathode electrode 9 exposed from the secondary opening 8. In this case, a porous layer, which has numerous holes in the direction of the film thickness, is formed on the conductive layer, and the primary opening 20 is formed on the conductive layer, utilizing the porous layer as a mask.