摘要:
An electron emitting device comprising: a pair of conductors opposed to each other on a substrate; and a pair of deposition films having carbon as a main component which are respectively connected to the pair of conductors and disposed with a gap therebetween. The deposition film contains sulfur in a range of not less than 1 mol % and not more than 5 mol % as a ratio to carbon.
摘要:
In an electron-emitting device having a pair of electric conductors disposed on a substrate in opposed relationship with each other, and a pair of piled films composed chiefly of carbon and connected to the pair of electric conductors and disposed with a gap interposed therebetween, the piled films contain therein one or more kinds of elements selected from the group of lithium, potassium, sodium, calcium, strontium and barium within the range of 1 mol % to 5 mol % in terms of the percentage to carbon.
摘要:
In manufacturing or adjusting an electron-emitting device which has at least two electrodes and emits electrons by applying a voltage between the two electrodes, or before performing normal driving, a voltage V1 is applied which has the following relationship with a maximum voltage value V2 applied as a normal driving voltage to the electron-emitting device between the two electrodes. Giving a current I flowing upon application of a voltage V when the voltage V falling within a voltage range causing electron emission upon application of the voltage between the two electrodes is applied between the two electrodes: I=f(V) and letting f′(V) be the differential coefficient of f(V) at the voltage V, the voltage V1 has a relationship with the voltage V2 that satisfies, upon application of the voltage, the first condition: f(V1)/{V1·f′(V1)−2f(V1)}>f(V2)/{V2·f′(V2)−2f(V2)} Further, letting Xn-1 be the value of the right side of inequality (2) upon a first application of the pulse-like voltage V2 when the voltage V2 is applied as pulses successively twice between the two electrodes after application of the voltage V1, and Xn be the value of the right side of inequality (2) upon a second application of the pulse-like voltage V2, the relationship with the voltage V2 satisfies the second condition that Xn−1 and Xn satisfy: (Xn-1−Xn)/Xn-1≦0.02
摘要:
The present invention provides an electron emitting device comprising: a pair of conductors opposed to each other on a substrate; and a pair of deposition films having carbon as a main component which are respectively connected to the pair of conductors and disposed with a gap therebetween. The deposition film contains sulfur in a range of not less than 1 mol % and not more than 5 mol % as a ratio to carbon.
摘要:
Provided is an image display apparatus capable of displaying a preferable image whose dark place contrast has a large value and whose color-reproducibility and gray-level reproducibility are excellent. A voltage level of a scanning selective signal is changed in response to a request from an outside or the like, so that a black level luminance is reduced to improve dark place contrast. In addition, when the voltage level of the scanning selective signal is changed, a conversion table for converting an input luminance into a modulation signal is changed to another conversion table. Therefore, for example, it is possible to maintain a display gray-level characteristic before and after the voltage level of the scanning selective signal is changed.
摘要:
An electron source comprises a plurality of electron-emitting devices and a drive means for driving the devices. The drive means applies a voltage above a threshold level to selected ones of the plurality of electron-emitting devices according to an image signal to cause the selected devices to emit electrons. The drive means also applies a voltage pulse for bringing the plurality of electron-emitting devices into a high resistance state. The voltage pulse for bringing into a high resistance state has a polarity reverse to that of the voltage for causing electron emission and has a voltage rising rate of greater than 10V/sec.
摘要:
An image-forming apparatus comprising an envelope formed of a plurality of members, an electron source arranged within the envelope and an image forming member for forming images by irradiation of electron beams from the electron source is manufactured by heating the plurality of members to bond them together to produce the envelope in an atmosphere containing at least a gas selected from reducing gases, inert gases and non-reducing and non-oxidizing gases or in a vacuum. The electron source comprises preferably an electron-emitting element having a thin film for electron emission arranged between a pair of electrodes.
摘要:
An electron source comprises a plurality of electron-emitting devices and a drive means for driving the devices. The drive means applies a voltage above a threshold level to selected ones of the plurality of electron-emitting devices according to an image signal to cause the selected devices to emit electrons. The drive means also applies a voltage pulse for bringing the plurality of electron-emitting devices into a high resistance state. The voltage pulse for bringing into a high resistance state has a polarity reverse to that of the voltage for causing electron emission and has a voltage rising rate of greater than 10 V/sec.
摘要:
An image display apparatus is provided with an external housing constituted by members including first and second substrates positioned with a gap therebetween, an electron source positioned on the first substrate in the external housing, and a fluorescent film and an accelerating electrode provided on the second substrate. A first getter is positioned in the image display area in the external housing. A second getter is provided, so that it is insulated from the electron source and the accelerating electrode, which surrounds the first getter.
摘要:
The present invention provides an electron emitting device including electrodes disposed with a space therebetween on a surface of a substrate, a carbon film disposed between the electrodes and connected to one of the electrodes, and a gap disposed between the carbon film and the other electrode. In the gap, the distance between the edge of the carbon film connected to one of the electrode and the edge of the other electrode at an upper position apart from the surface of the substrate is smaller than that at the surface of the substrate. The present invention also provides an electron source and an image display device each including the electron emitting device.