Abstract:
PROBLEM TO BE SOLVED: To provide a charged particle beam lens in which pressure resistance in a peripheral part of the lens is enhanced, and a manufacturing method for manufacturing the charged particle beam lens at low cost.SOLUTION: A charged particle beam lens 1 comprises at least a first electrode 11, a second electrode 12 and an insulator 13 disposed between the first electrode 11 and the second electrode 12. Each of the insulator 13, the first electrode 11 and the second electrode 12 includes at least one beam passing part (21, 22, 23) for passing a charged beam therethrough. An outer edge of the first electrode 11 is disposed inside of an outermost edge of the insulator 13 and an outer edge of the second electrode 12, and a step is provided in a direction where at least a part of a surface of the insulator 13 which is exposed without contacting the first electrode 11 is retracted with respect to a coarse surface 14 or a contact surface between the first electrode 11 and the insulator 13.
Abstract:
PROBLEM TO BE SOLVED: To provide an electrostatic lens having an electrode protection film that allows suppression of axis deviation of a charged particle line in the electrostatic lens, or allows achievement and retention of a highly precise positioned state of a component member.SOLUTION: An electrostatic lens comprises: a plurality of electrodes 1 each having a through hole 3; and an insulating spacer 2 disposed between the electrodes and defines a distance between the electrodes. The insulating spacer 2 is integrated with the electrodes 1 opposed to each other by allowing both surfaces of the insulating spacer 2 to be respectively joined to the electrodes. An electrode protection film 4 is disposed on both surfaces of each of the electrodes 1. The electrode protection film 4 exists on an inner wall of the through hole 3 and on the surfaces of the electrode 1 in a region around the through hole 3 continuously connected from the inner wall to end parts of the electrode 1. The electrode protection film 4 does not exist at the interface between the electrode 1 and the insulating spacer 2.
Abstract:
PROBLEM TO BE SOLVED: To provide an electron emitting element, an electronic source, and an image forming device wherein leakage current flowing at a gap end part neighborhood is completely eliminated and the leakage current is less. SOLUTION: Element electrodes 2, 3 are concentrically formed on a circuit board 1, a conductive membrane 4 is formed straddling over the element electrodes 2, 3, and a gap 5 to become an electron emitting part is formed in a loop-like shape (endlessness). By such a constitution, the electron emitting element in which there is no leakage current to flow through the element membrane end part and the leakage current is less as the total can be realized, and furthermore, the image forming apparatus having low power consumption and high quality can be realized by using that electron emitting element. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To suppress a leakage current flowing between element electrodes 2, 3 at the time of the low voltage when un-driving in an electron source substrate having an electron emission element provided with a substrate 1, a pair of element electrodes 2, 3 located on the substrate 1 and a conductive thin film 4 provided with an electron emission part 5 between the element electrodes 2, 3 and a antistatic film 6 contacting with at least a pair of element electrodes 2, 3 and covering an exposed upper part of the substrate 1. SOLUTION: A antistatic film 6 is provided with a high impedance part 7 preventing a current generated between the pair of element electrodes 2, 3 through the antistatic film 6. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To prevent a brazing material for bonding a shield and a target from reaching an electron passage, thereby preventing the deterioration of radiation quality caused by electron beams hitting flowed out brazing material, even if the brazing material flows out.SOLUTION: A radiation generating tube comprises: an electron emission source 3 for emitting electrons; a target 9 for generating radiation when radiated with the electrons; a tubular electron passage 8 whose one opening is spaced from and opposed to the electron emission source and whose other opening faces the target; a rear shield 7c positioned nearer the electron emission source than the target; and a brazing material 14 for connecting the rear shield and a periphery of the target at a position spaced from the other opening. In the radiation generating tube, a closed space 20 separated from the electron passage is provided between the target and the rear shield.