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US 6,635,984 B1Granted
Image-forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorMasaaki Shibata
Life of this patent
Estimating the term…
Abstract
An image-forming apparatus capable of obtaining an image of high quality is provided, in which the image-forming apparatus has a region formed such that the widths of X- and Y-directional wirings on the outer side of an image forming region in proximity to the image forming region are wider than those within the image forming region.
Claims15
An image-forming apparatus having an image forming region formed in an approximately rectangular shape, comprising:
- an electron source substrate in which electron-emitting devices are connected to m pieces of X-directional wirings and n pieces of Y-directional wirings electrically insulated from each other, and are arranged in matrix;
- and
- a face plate spaced oppositely from the electron source substrate approximately at a constant distance, and having an anode electrode and a fluorescent film therein, wherein
- conductive members, each of which is electrically connected to one of said X-directional wirings and said Y-directional wirings, are arranged respectively in four regions, which are positioned outside of said forming region on said electron source substrate, in which said four regions said X-directional wirings and said Y-directional wirings are not disposed, and which said four regions are positioned respectively in a vicinity of four corners of the approximately rectangular shape of the image forming region, and
- a space between said face plate and said electron source substrate is maintained at a reduced pressure and said conductive member is positioned in said space.
2 more elements
An image forming apparatus having an airtight container, comprising:
- an electron source substrate in which plural electron-emitting devices connected to m pieces of X-directional wirings and n pieces of Y-directional wirings electrically insulated from each other are arranged in matrix;
- and
- a face plate arranged oppositely to the electron source substrate and having a fluorescent film and an anode electrode, wherein
- the interior of said airtight container has a region in which widths of said X-and Y-directional wirings arranged on the outer side of an image forming region are wider than those arranged within said image forming region, and
- a space between said faced plate and said electron source substrate is maintained at a reduced pressure.
2 more elements
An image-forming apparatus having an airtight container, comprising:
- an electron source substrate in which plural electron-emitting devices connected to m pieces of X-directional wirings and n pieces of Y-directional wirings electrically insulated from each other are arranged in matrix;
- and
- a face plate arranged oppositely to the electron source substrate and having a fluorescent film and an anode electrode, wherein
- an image forming regions substantially formed in a rectangular shape is arranged within said airtight container,
- an outer side of said image forming region in proximity to four corners of the image forming region has a region in which widths of said X- or Y-directional wirings are wide in comparison with an interior of said image forming region, and
- an interior of the airtight container is maintained at a reduced pressure.
3 more elements
An image display apparatus comprising:
- an electron source substrate provided with a plurality of X-directional wirings, a plurality of X-directional wirings crossing said plurality of Y-directional wirings and a plurality of electron-emitting devices each of which is connected to one of said X-directional wirings and one of said Y-directional wirings;
- and
- a face plate provided with a phosphor film and an anode electrode,
- wherein a space between said face plate and said electron source substrate is maintained at a reduced pressure, and
- wherein, in said space, said X-directional wirings and said Y-directional wirings have greater width outside of an image displaying region than within the image displaying region.
2 more elements
An image forming apparatus having an airtight container, comprising:
- an electron source substrate on which a plurality of electron-emitting devices, m pieces of X-directional wirings and n pieces of Y-directional wirings are arranged, each electron-emitting device being connected to one of the m pieces of said X-directional wirings and one of the n pieces of said Y-directional wirings;
- and
- a face plate having a fluorescent film and an anode electrode,
- wherein a space between said face plate and said electron source substrate is maintained at a reduced pressure, and
- wherein, in said space, a width of the m pieces of said X-directional wirings outside of an image forming region is greater than any width of the m pieces of said X-directional wirings within the image forming region.
2 more elements
An image forming apparatus having an airtight container, comprising:
- an electron source substrate on which a plurality of electron-emitting devices, m pieces of X-directional wirings and n pieces of Y-directional wirings are arranged, each electron-emitting device being connected to one of the m pieces of said X-directional wirings and one of the n pieces of said Y-directional wirings;
- and
- a face plate having a fluorescent film and an anode electrode,
- wherein a space between said face plate and said electron source substrate is maintained at a reduced pressure, and
- wherein, in said space, a width of the n pieces of said Y-directional wirings outside of an image forming region is greater than any width of the n pieces of said Y-directional wirings within the image forming region.
2 more elements
An image forming apparatus having an airtight container, comprising:
- an electron source substrate on which a plurality of electron-emitting devices, m pieces of X-directional wirings and n pieces of Y-directional wirings are arranged, each electron-emitting device being connected to one of the m pieces of said X-directional wirings and one of the n pieces of said Y-directional wirings;
- and
- a face plate having a fluorescent film and an anode electrode,
- wherein a space between said face plate and said electron source substrate is maintained at a reduced pressure, and
- wherein, in said space, said X-directional wirings have greater width outside of an image forming region than within the image forming region.
2 more elements
An image forming apparatus having an airtight container, comprising:
- an electron source substrate on which a plurality of electron-emitting devices, m pieces of X-directional wirings and n pieces of Y-directional wirings are arranged, each electron-emitting device being connected to one of the m pieces of said X-directional wirings and one of the n pieces of said Y-directional wirings;
- and
- a face plate having a fluorescent film and an anode electrode,
- wherein a space between said face plate and said electron source substrate is maintained at a reduced pressure, and
- wherein, in said space, said Y-directional wirings have greater width outside of an image forming region than within the image forming region.
2 more elements
An image forming apparatus having an airtight container, comprising:
- an electron source substrate on which a plurality of electron-emitting devices, m pieces of X-directional wirings and n pieces of Y-directional wirings are arranged, each electron-emitting device being connected to one of the m pieces of said X-directional wirings and one of the n pieces of said Y-directional wirings;
- and
- a face plate having a fluorescent film and an anode electrode,
- wherein a space between said face plate and said electron source substrate is maintained at a reduced pressure, and
- wherein, in said space, at least one of said X-directional wirings has greater width outside of an image forming region than within the image forming region.
2 more elements
An image forming apparatus having an airtight container, comprising:
- an electron source substrate on which a plurality of electron-emitting devices, m pieces of X-directional wirings and n pieces of Y-directional wirings are arranged, each electron-emitting device being connected to one of the m pieces of said X-directional wirings and one of the n pieces of said Y-directional wirings;
- and
- a face plate having a fluorescent film and an anode electrode,
- wherein a space between said face plate and said electron source substrate is maintained at a reduced pressure, and
- wherein, in said space, at least one of said Y-directional wirings has greater width outside of an image forming region than within the image forming region.
2 more elements
Dependencies are inferred from the claim text.