Abstract:
It is an object of the invention to provide an image forming apparatus capable of easily obtaining a white balance and performing image display with excellent color reproduction properties, and a method of manufacturing and adjusting the image forming apparatus. A plurality of surface conduction electron-emitting devices (1002) are arranged on a substrate (1001). Light emission is performed in accordance with the colors (R, G, and B) of phosphors applied to a phosphor film (1008) upon electron emission from the devices, so that an image is formed. The electron-emitting characteristics of the surface conduction electron-emitting devices (1002) are shifted in advance in correspondence with corresponding phosphor colors. Therefore, a satisfactory white balance of light emission of the R, G, and B phosphors can be obtained.
Abstract:
A carbon film having an area of insulating material surrounded by an area of conducting material, and an area of material between the area of insulating material and the area of conducting material having a graded dielectric constant which varies from high to low from the area of insulating material to the area of conducting material.
Abstract:
In order to prevent voltage drops across the wiring resistances in a multi-electron source having a plurality of electron emitters wired in the form of a matrix through a plurality of data wiring layers and a plurality of scanning wiring layers, a constant current signal is output to each data wiring layer. At this time, each non-selected data wiring layer tends to be set at a high impedance and vary in potential, resulting in an abnormal turn-on operation or an electron orbit shift. A driving circuit for solving this problem is provided. A switch for switching a constant current output unit for outputting a constant current regardless of the impedance of a signal output destination, and a constant voltage output unit for outputting a constant voltage regardless of the impedance of a signal output destination is connected to each data wiring layer. For example, a constant-current circuit (17) as a current output unit always outputs the same current (I1 to In) to a switch (30). A pulse width signal (PW1 to PWn) from a pulse-width modulation circuit (7) serves to switch the mode of outputting a current (I1 to In) to a data wiring layer (Dy1 to Dyn) and the mode of fixing a data wiring layer to voltage GND.
Abstract:
An image-forming apparatus comprises a rear plate on which an electron-emitting device is provided, a face plate having an image-forming member and arranged to be opposed to the rear plate, and a spacer provided between the face plate and the rear plate. The spacer comprises a spacer base plate and a coating layer including organic resin and carbon. At least part of the carbon is exposed from the surface of the coating layer. The image-forming apparatus displays an image with a high luminance and a high color saturation over a prolonged time.
Abstract:
In an image forming apparatus, a support member (50) for maintaining the distance between a face plate (30) and a rear plate (31) is interposed between the face plate (30) and the rear plate (31). An intermediate layer (52) is formed at apportion near the face plate (30). The intermediate layer (52) is a low-resistance film, and is set to have almost the same potential as that of the face plate (30). As a result, an electron beam from an electron-emitting portion near the support member (50) follows an orbit which steadily comes close to the support member near the face plate. By setting the interval between electron-emitting devices adjacent to each other via the support member to be larger than the interval between devices adjacent to each other without the mediacy of the support member, the electron beam is irradiated on a proper position on the face plate (30).
Abstract:
An image forming apparatus, according to the present invention, comprises a first substrate whereon are provided a functional element and electric wiring that is connected to the functional element, and a second substrate whereon is an area where an image is to be formed, and wherein, with the first substrate and the second substrate being located opposite to each other, space between the first substrate and the second substrate is kept in a pressure-reduced state so as to form an image in the area on the second substrate, and wherein the electric wiring is formed of a laminated conductive material by a process that plates a printed pattern, which is initially deposited by a printing process.
Abstract:
In order to cause a multi-electron source having electron emitters wired in the form of a matrix to emit electrons without any variations, there is provided an electron generating device including a multi-electron source (601) having a plurality of electron emitters (1002) wired in the form of a matrix through a plurality of data wiring layers (1004) and a plurality of scanning wiring layers (1003), and a driving circuit for driving the multi-electron source (601), the driving circuit including a first driving means (603) for applying a first voltage (Vs) to a scanning wiring layer to which an electron emitter which is to emit electrons is connected, and applying a second voltage (Vns) to a scanning wiring layer to which an electron emitter which is not to emit electrons is connected, and a second driving means (602) for applying a third voltage (Ve) to a data wiring layer to which an electron emitter which is to emit electrons is connected, and applying a fourth voltage (Vg) to a data wiring layer to which an electron emitter which is not to emit electrons is connected, wherein the second voltage (Vns) is substantially equal to the third voltage (Ve).
Abstract:
An electron-emitting device comprises an electroconductive film including an electron-emitting region disposed between a pair of electrodes arranged on a substrate. The electron-emitting region is formed close to the step portion formed by one of the electrodes and the substrate.
Abstract:
An electron-beam generator comprises an electron-emitting device and a modulating electrode capable of modulating an electron beam emitted from the electron-emitting device in response to an information signal. The modulating electrode and the electron-emitting device are laminated so as to interpose an insulating substrate therebetween.
Abstract:
A multi-electron beam source comprises an electron emitting element part including: a plurality of electron emitting elements provided two-dimensionally in a matrix-like arrangement on a substrate; opposing terminals of electron emitting elements arranged adjacently in the column direction thereof being electrically connected to each other; terminals on the same side of all the electron emitting elements in the same row being electrically connected; and the plurality of electron emitting elements being arranged in "m" rows, "m" representing a number of two or more, and a driving circuit part for driving said electron emitting element part. The multi-electron beam source has means for removing a spike noise superposed onto the driving pulse generated by said driving circuit part.