JP3768221B2 - Fluorescent light emitting display and fluorescent light emitting display - Google Patents

Description

  The present invention relates to a fluorescent light-emitting display that performs light-emitting display by causing electrons from a field electron-emitting device to collide with a phosphor, and a fluorescent light-emitting display device using the fluorescent light-emitting display.

  2. Description of the Related Art Conventionally, a fluorescent light-emitting display device in which a phosphor-coated anode electrode, a cathode that emits electrons, and a grid electrode that is disposed between the anode electrode and the cathode are disposed in a vacuum hermetic container has been used in vehicles. It is used in various fields such as for audio equipment, video equipment, or display cells of large screen display devices (see Patent Document 1).

FIG. 6 is a side sectional view showing a schematic configuration of a fluorescent display tube which is a kind of conventional fluorescent display. In FIG. 6, an anode electrode 604 and a phosphor layer 605 are laminated and deposited on the inner surface of the back substrate 601 located on the back side. A grid electrode 606 formed in a mesh shape is disposed to face the phosphor layer 605.
Above the grid electrode 606, a plurality of linear cathodes 607 for emitting electrons are stretched. The grid electrode 606 and the cathode 607 are connected to the external terminal 608 via an internal terminal (not shown) patterned on the back substrate 601.
The back substrate 601, the translucent front substrate 602, the back substrate 601, and the side substrate 603 surrounding the front substrate 602 constitute a vacuum hermetic container 600 that holds the inside in a vacuum atmosphere.

In the fluorescent display tube configured as described above, by selectively supplying drive signals to the anode electrode 604 and the grid electrode 606 via the external terminal 608, electrons emitted from the linear cathode 607 are selectively used. The phosphor layer 605 is projected onto the light emitting layer, whereby light emission display according to the drive signal can be performed. The light emitting display is visually recognized through the front substrate 602.
Japanese Patent Laid-Open No. 3-152837

  The conventional fluorescent display tube has a triode structure including the anode electrode 604, the grid electrode 606, and the cathode 607, and thus has a problem that the structure is complicated and it is difficult to reduce the thickness. In addition, there is a problem that an anchor, a support, and the like for arranging the cathode 607 in a stretched manner are required, and a frame for arranging the grid electrode 606 in a three-dimensional manner is required, resulting in a complicated structure. . Further, since the cathode 607 is linear, there is a problem that it is weak against vibration.

An object of the present invention is to provide a fluorescent light-emitting display that is simple in structure and can be thinned.
Another object of the present invention is to provide a fluorescent display that is resistant to vibration.
It is another object of the present invention to provide a fluorescent light emitting display device that has a simple structure, is resistant to vibration, and has excellent display quality.

The fluorescent light emitting display according to the present invention includes a vacuum hermetic container having a first insulating substrate and a second insulating substrate disposed to face the first insulating substrate, and an inner surface of the first insulating substrate. A first electrode and a first phosphor layer, a second electrode and a second phosphor layer laminated on the inner surface of the second insulating substrate, and the first and second insulating substrates. And a spacer member that holds the first and second insulating substrates at a predetermined interval, and the first and second phosphor layers include carbon nanotubes and carbon nanofibers. In addition, at least one of fullerene, nanoparticle, nanocapsule, and carbon nanohorn is mixed and arranged to face each other.
At least the phosphor layer may be covered with a non-translucent insulating layer that has been blackened.

  The fluorescent light emitting display device of the present invention includes a vacuum hermetic container having a first insulating substrate and a second insulating substrate disposed to face the first insulating substrate, and the first insulating substrate. A first electrode and a first phosphor layer laminated on the inner surface of the substrate; a second electrode and a second phosphor layer laminated on the inner surface of the second insulating substrate; and the first and second phosphor layers. A spacer member disposed on at least one inner surface side of the insulating substrate and holding the first and second insulating substrates at a predetermined interval; and a driving circuit for driving the first and second electrodes. The first and second phosphor layers are mixed with at least one of carbon nanotubes, carbon nanofibers, fullerenes, nanoparticles, nanocapsules, and carbon nanohorns, and are disposed facing each other. The drive circuit is opposite That the first is characterized by applying a voltage alternating to the second electrode. By applying an alternating voltage to the first and second electrodes by the drive circuit, electrons are emitted from one phosphor layer and the other phosphor layer emits light, and this is repeated alternately.

According to the fluorescent light emitting display of the present invention, there is an effect that the configuration is simple and the thickness can be reduced. In addition, since a linear cathode is not used, it is possible to achieve an effect of being resistant to vibration.
Furthermore, according to the fluorescent light emitting display device of the present invention, there is an effect that the structure is simple and strong against vibration and the display quality is excellent.

FIG. 1 is a front view of a fluorescent light emitting display according to a first embodiment of the present invention, and FIG. 2 is a partial side sectional view thereof.
1 and 2, a front-side insulating substrate 101 as a first insulating substrate made of a light-transmitting glass substrate, a back-side insulating substrate 102 as a second insulating substrate made of a glass substrate, and the insulating substrate 101 The insulating sealing glass 103 that seals the periphery of the insulating substrate 102 forms a vacuum hermetic container 100 that holds the inside in a vacuum atmosphere.

On the inner surface of the insulating substrate 101, a plurality of anode electrodes 104 and phosphor layers 203 constituting four 7-segments and a colon are laminated and deposited. Each anode electrode 104 is connected to a plurality of external terminals 107 printed on the back surface of the insulating substrate 101 via a wiring pattern (not shown) formed on the inner surface of the insulating substrate 101.
The light-transmitting anode electrode 104 can be formed of a light-transmitting electrode such as ITO (Indium Tin Oxide), SnO ₂ or an aluminum electrode formed in a mesh shape. The phosphor layer 203 may be mixed with a carbon material having a getter function and capable of improving contrast by blackening the phosphor. As the carbon material, for example, a carbon material having at least one of carbon nanotubes, carbon nanofibers, fullerenes, nanoparticles, nanocapsules, and carbon nanohorns can be used.

  A plurality of spacer members 105 formed of an insulating material (for example, glass) are formed on the inner surface side of the insulating substrate 101 (for example, a portion other than the phosphor layer 203 on the insulating substrate 101 or the wiring pattern of the anode electrode 104). Is formed. The spacer member 105 is for forming a predetermined distance between the insulating substrate 101 and the insulating substrate 102, and has a function as a support for preventing the two insulating substrates 101 and 102 from coming into contact with each other. This is particularly effective when the areas of the insulating substrate 101 and the insulating substrate 102 are large.

On the other hand, on the inner surface of the insulating substrate 102, a plurality of cathode electrodes 201 and field electron-emitting devices 202 made of a metal having a reflective surface such as Al are laminated. Each cathode electrode 201 is connected to an external terminal 106 printed on the surface of the insulating substrate 102 via a wiring pattern (not shown) formed on the inner surface of the insulating substrate 102.
The field electron-emitting device 202 is formed of a carbon material having at least one of single-walled or multi-walled carbon nanotubes, carbon nanofibers, fullerenes, nanoparticles, nanocapsules, and carbon nanohorns. It has a function of emitting electrons from the carbon material.

  In addition, a spacer member 204 formed of an insulating material (for example, glass) on the inner surface side of the insulating substrate 102 (for example, a portion other than the field electron emission element 202 on the insulating substrate 102 or the wiring pattern of the cathode electrode 201). Is formed. As with the spacer member 105, the spacer member 204 is for holding the insulating substrate 101 and the insulating substrate 102 at a predetermined interval.

  The spacer member 105 and the spacer member 204 are formed at positions facing each other, and are formed in contact with each other as shown in FIG. In this embodiment, both the spacer member 105 and the spacer member 204 are provided. However, only one of the spacer members is provided, and the leading end of the spacer member is attached to the opposing insulating substrate. You may comprise so that it may contact | abut. In the present embodiment, the spacer members 105 and 204 are formed in the shape of dots. However, the insulating substrate 101 may be used depending on the configuration of display pixels in a fluorescent display such as segment display or graphic display. , 102 can be formed into various shapes such as a band shape and a mesh shape as long as a sufficient exhaust conductance can be obtained between them.

  In the fluorescent light emitting display configured as described above, the anode electrode 104 and the cathode electrode 201 are selectively driven to emit light by a drive circuit (not shown) in accordance with a display signal. As a result, electrons are emitted from the field electron emission element 202 positioned between the anode electrode 104 and the cathode electrode 201 driven to emit light, and the phosphor layer 203 positioned between the anode electrode 104 and the cathode electrode 201 driven to emit light is applied to the phosphor layer 203. Electrons strike and the phosphor emits light. Thereby, the light emission display according to a display signal is performed.

FIG. 3 is an explanatory view of the fluorescent light emitting display device according to the first embodiment of the present invention, and shows a timing chart in the case of driving the fluorescent light emitting display device according to the first embodiment. .
In FIG. 3, a difference voltage V between the drive voltage Va of the anode electrode 104 and the drive voltage Vc of the cathode electrode 201 causes electron emission from the field electron-emitting device 202 to the anode electrode 104 and the cathode electrode 201 that are driven to emit light. It is applied and driven so as to be a voltage equal to or higher than a threshold voltage _Vth that can be performed. At the same time, the anode electrode 104 and the cathode electrode 201 adjacent to the anode electrode 104 and the cathode electrode 201 that are driven to emit light are driven by applying a voltage such that the voltage V is less than the threshold voltage _Vth .

That is, when the anode electrode 104 and the cathode electrode 201 are electrodes that are driven to emit light, a voltage is applied so that the voltage V becomes equal to or higher than the threshold voltage _Vth , as shown at times T _{2 to} T _3. To drive. On the other hand, in the case of no light emission driving electrodes, as time T ₀ through T ₂ and time T ₃ after the voltage V is driven by applying a voltage that is less than the threshold voltage V _th.
As a result, electrons are emitted from the portion of the field electron emission device 202 to which the voltage V equal to or higher than the threshold voltage _Vth is applied, and the phosphor layer 203 disposed to face the field electron emission device 202 is formed. Emits light. On the other hand, since the voltage V _lower than the threshold voltage _Vth is applied to the anode electrode 104 and the cathode electrode 201 adjacent to the anode electrode 104 and the cathode electrode 201 driven to emit light, the field electron emission driven to emit light is applied. The spread of the electron beam emitted from the element 202 can be suppressed, and only the phosphor layer 203 corresponding to the anode electrode 104 and the cathode electrode 201 that are driven to emit light emits light, and the adjacent phosphor layer 203 is prevented from emitting light. can do.
Therefore, high-quality light emission display without leaking light emission can be performed. In addition, since the cathode electrode 201 has a reflective surface, luminance can be improved by configuring a short distance between the anode electrode 104 and the cathode electrode 201. The light emitting display is visually recognized through the insulating substrate 101 and the anode electrode 104.

FIG. 4 is a partial sectional side view of a fluorescent light emitting display according to the second embodiment of the present invention, and the same reference numerals are given to the same parts as those in FIGS.
In FIG. 4, a front-side insulating substrate 402 as a second insulating substrate made of a translucent glass substrate, a back-side insulating substrate 401 as a first insulating substrate made of a glass substrate, and the insulating substrate 401 and the insulating substrate An insulating sealing glass (not shown) that seals the periphery of 402 constitutes the vacuum hermetic container 100.

A plurality of cathode electrodes 404 and field electron-emitting devices 202 are stacked on the inner surface of the insulating substrate 402. Each cathode electrode 404 is formed of a light-transmitting electrode such as ITO, SnO ₂ or an aluminum electrode formed in a mesh shape, and via a wiring pattern (not shown) formed on the inner surface of the insulating substrate 402. It is connected to an external terminal (not shown). The field electron emission element 202 is made of the same carbon material as that of the first embodiment.

  Further, a dot-like shape formed of an insulating material (for example, glass) on the inner surface side of the insulating substrate 402 (for example, a portion other than the field electron emission element 202 on the insulating substrate 402 or the wiring pattern of the cathode electrode 404). A plurality of spacer members 406 are formed. The spacer member 406 is for forming a predetermined distance between the insulating substrate 401 and the insulating substrate 402 as in the spacer members 105 and 204 described above.

  On the other hand, a plurality of anode electrodes 403 and a phosphor layer 203 are laminated on the inner surface of the insulating substrate 401. Each anode electrode 403 is made of a metal having a reflective surface such as Al, and is connected to an external terminal (not shown) via a wiring pattern (not shown) formed on the inner surface of the insulating substrate 401. ing. As in the first embodiment, the phosphor layer 203 has a getter function, and a carbon material that can improve the contrast by blackening the phosphor, such as single-wall or multi-wall carbon nanotubes, carbon A carbon material having at least one of nanofibers, fullerenes, nanoparticles, nanocapsules, and carbon nanohorns may be mixed.

A spacer member 405 formed of an insulating material (for example, glass) is formed on the inner surface side of the insulating substrate 401 (for example, a portion other than the phosphor layer 203 on the insulating substrate 401 or the wiring pattern of the anode electrode 403). Is formed. The spacer member 405 is for forming a predetermined distance between the insulating substrate 401 and the insulating substrate 402, similarly to the spacer member 406.
The spacer member 405 and the spacer member 406 are formed at positions facing each other and are in contact with each other. Although both the spacer member 405 and the spacer member 406 are provided, it may be configured such that either one of the spacer members is provided and the leading end portion of the spacer member abuts against the opposing insulating substrate. Good.

Also in the fluorescent light emitting display configured as described above, the anode electrode 403 and the cathode electrode 404 are selected by the drive circuit (not shown) according to the display signal, as in the first embodiment. Drive. At this time, a voltage equal to or higher than a threshold voltage _{Vth at which} electrons can be emitted from the field electron-emitting device 202 is applied between the anode electrode 403 that is driven to emit light and the cathode electrode 404, and the anode electrode 403 that is driven to emit light and A voltage _lower than the threshold voltage _Vth is applied between the anode electrode 403 adjacent to the cathode electrode 404 and the cathode electrode 404 for driving.

  As a result, it is possible to suppress the spread of the electron beam emitted from the field electron-emitting device 202, so that only the phosphor layer 203 corresponding to the anode electrode 403 and the cathode electrode 404 that are driven to emit light emits light, and the adjacent phosphor layer It is possible to prevent 203 from emitting light. Therefore, high-quality light emission display without leaking light emission can be performed. Further, since the anode electrode 403 is formed of a metal having a reflective surface, luminance can be improved. The light-emitting display is visually recognized through the insulating substrate 402, the cathode electrode 404, and the thin film-like field electron emission device 202.

FIG. 5 is a partial sectional side view of a fluorescent light emitting display according to the third embodiment of the present invention, and the same reference numerals are given to the same parts as those in FIGS.
In FIG. 5, a front-side insulating substrate 502 as a second insulating substrate made of a translucent glass substrate, a back-side insulating substrate 501 as a first insulating substrate made of a glass substrate, and the insulating substrate 501 and the insulating substrate An insulating sealing glass (not shown) that seals the periphery of 502 constitutes the vacuum hermetic container 100.

A plurality of second electrodes 504 and a phosphor layer 203 are stacked on the inner surface of the insulating substrate 502. Each second electrode 504 is formed of a light-transmitting electrode such as ITO, SnO ₂ or an aluminum electrode formed in a mesh shape, and a wiring pattern (not shown) formed on the inner surface of the insulating substrate 502 is formed. Via an external terminal (not shown).
Further, a dot shape formed of an insulating material (for example, glass) on the inner surface side of the insulating substrate 502 (for example, a portion other than the phosphor layer 203 on the insulating substrate 502 or the wiring pattern of the second electrode 504). A plurality of spacer members 506 are formed. The spacer member 506 is for forming a predetermined distance between the insulating substrate 501 and the insulating substrate 502, similarly to the spacer members 105 and 204 described above.

On the other hand, a plurality of first electrodes 503 and a phosphor layer 203 are laminated on the inner surface of the insulating substrate 501. Each first electrode 503 is made of a metal having a reflective surface such as Al, and is connected to an external terminal (not shown) via a wiring pattern (not shown) formed on the inner surface of the insulating substrate 501. It is connected.
The phosphor layer 203 deposited on the first electrode 503 and the phosphor layer 203 deposited on the second electrode 504 are formed in the same pattern and are opposed to each other. It is arranged.

A spacer member 505 formed of an insulating material (for example, glass) on the inner surface side of the insulating substrate 501 (for example, a portion other than the phosphor layer 203 on the insulating substrate 501 or the wiring pattern of the first electrode 503). Is formed. The spacer member 505 is for forming a predetermined distance between the insulating substrate 501 and the insulating substrate 502, similarly to the spacer member 506.
The spacer member 505 and the spacer member 506 are formed at positions facing each other and are in contact with each other. Although both the spacer member 505 and the spacer member 506 are provided, either one of the spacer members may be provided so that the leading end portion of the spacer member is in contact with the opposing insulating substrate. Good.

  Each phosphor layer 203 disposed on the insulating substrate 501 and the insulating substrate 502 is mixed with a carbon material as a field electron-emitting device that emits electrons when an electric field is applied. As the carbon material, a carbon material having at least one of single-walled or multi-walled carbon nanotubes, carbon nanofibers, fullerenes, nanoparticles, nanocapsules, and carbon nanohorns can be used. The carbon material is suitable in that it has a getter function and can improve the contrast by blackening the phosphor.

In the fluorescent light emitting display configured as described above, an alternating voltage is applied to the first electrode 503 and the second electrode 504 in accordance with a display signal by a drive circuit (not shown). As a result, electrons are emitted from the carbon material contained in the phosphor layer formed on the electrode driven at the negative voltage, and the phosphor formed on the electrode driven at the positive voltage emits light.
That is, electrons are emitted from the carbon material in the phosphor layer 203 formed on the first electrode 503 during a period in which the first electrode 503 is driven to a negative voltage and the second electrode 504 is driven to a positive voltage. Then, the phosphor layer 203 formed on the second electrode 504 and facing the carbon material that emits electrons emits light. On the other hand, when the first electrode 503 is driven to a positive voltage and the second electrode 504 is driven to a negative voltage, electrons are emitted from the carbon material in the phosphor layer 203 formed on the second electrode 504. The phosphor layer 203 formed on the first electrode 503 and facing the carbon material that emits electrons emits light.

  Accordingly, the phosphor layers 203 formed over the first electrode 503 and the second electrode 504 emit light alternately, so that the luminance can be improved. In addition, if phosphors having different emission colors are used as the phosphors of the phosphor layer 203 formed on the first electrode 503 and the phosphor layer 203 formed on the second electrode 504, each phosphor Various emission colors can be displayed by changing the duty ratio for driving the body layer 203 to emit light. Note that the light-emitting display is visually recognized through the insulating substrate 502, the second electrode 504, and the phosphor layer 203.

In addition, during the light emission driving, the first electrode 503 and the second electrode 504 that are driven to emit light are driven by applying a voltage equal to or higher than a threshold voltage _Vth capable of emitting electrons from the carbon material, A voltage _lower than the threshold voltage _Vth is applied between the first electrode 503 and the second electrode 504 adjacent to the first electrode 503 and the second electrode 504 that are driven to emit light.
Thereby, since it is possible to suppress the spread of the electron beam emitted from the carbon material of the phosphor layer 203, only the phosphor layer 203 corresponding to the first electrode 503 and the second electrode 504 driven to emit light emits light. It is possible to prevent the adjacent phosphor layer 203 from emitting light. Therefore, high-quality light emission display without leaking light emission can be performed. In addition, since the first electrode 503 is formed using a metal having a reflective surface, luminance can be improved.

  As described above, the fluorescent light emitting display according to each of the above embodiments includes the first insulating substrate (insulating substrates 101 and 401) and the second insulating substrate disposed opposite to the first insulating substrate. A vacuum hermetic container 100 having an insulating substrate (insulating substrates 102 and 402), anode electrodes 104 and 403 and phosphor layer 203 sequentially stacked on the inner surface of the first insulating substrate, and an inner surface of the second insulating substrate. The cathode electrodes 201 and 404 and the field electron emission device 202, which are sequentially stacked, are disposed on the inner surface side of at least one of the first and second insulating substrates, and a predetermined distance is provided between the first and second insulating substrates. Spacer members 105, 204, 405, and 406 for holding the anode electrodes 104 and 403 and the cathode electrodes 201 and 404 in accordance with display signals. Accordingly, in response to said configuration pattern of each electrode and the phosphor layer 203, a segment display, graphic display, the pixel display of a large screen display device, various light emitting display is performed. Therefore, since the structure is a bipolar structure, the structure is simplified.

  The field electron-emitting device 202 can use, for example, a carbon material having at least one of single-walled or multi-walled carbon nanotubes, carbon nanofibers, fullerenes, nanoparticles, nanocapsules, and carbon nanohorns. Since the carbon material is very small and the tip of the carbon nanotube or carbon nanofiber is sharp, high-efficiency field emission is possible at low voltage, and it has a simple structure and high brightness even when driven at low voltage. It becomes possible to configure a fluorescent light emitting display.

In addition, by making the phosphor layer 203 contain the carbon material, it is possible to extend the life due to the getter action of the carbon material, and a carbon material that can blacken the phosphor layer 203 is mixed. By doing so, the contrast can be improved.
Further, by forming the first insulating substrate 101 with a light-transmitting substrate and forming the anode electrode 104 with a light-transmitting electrode, the light-emitting display can be visually recognized through the first insulating substrate 101. Is possible.
Furthermore, the second insulating substrate 402 is formed of a light-transmitting substrate, and the cathode electrode 404 is formed of the light-transmitting electrode, so that a light-emitting display can be visually recognized through the second insulating substrate 402. It becomes possible.

The first and second insulating substrates 101, 102, 401, and 402 are formed of a light-transmitting substrate, and the anode electrodes 104 and 403 and the cathode electrodes 201 and 404 are formed of the light-transmitting electrodes. As a result, it is possible to view the light emitting display from either side of the first and second insulating substrates 101, 102, 401, 402.
In addition, when at least one of the anode electrodes 104 and 403 and the cathode electrodes 201 and 404 is formed of a light reflective electrode, luminance can be improved.

  In addition, the fluorescent light emitting display according to the embodiment of the present invention includes a first insulating substrate (insulating substrate 501) and a second insulating substrate (insulating substrate) arranged to face the first insulating substrate. 502), a first electrode 503 and a first phosphor layer 203 stacked on the inner surface of the first insulating substrate, and a second layer stacked on the inner surface of the second insulating substrate. Electrode 504 and second phosphor layer 203, and the first and second phosphor layers 203 are at least one of carbon nanotubes, carbon nanofibers, fullerenes, nanoparticles, nanocapsules, and carbon nanohorns. It is characterized in that one is mixed and arranged opposite to each other.

Therefore, it is possible to configure a fluorescent light emitting display device with improved light emission luminance by applying alternating voltages in which positive and negative are alternately switched to the first and second electrodes 503 and 504 by the driving circuit. . Further, if the phosphor layers 203 having different emission colors are used on the first electrode 503 and the second electrode 504, the emission color of each phosphor can be changed by changing the duty ratio for driving the electrodes 503 and 504 to emit light. A fluorescent light emitting display device capable of mixing colors at various ratios and capable of multicolor display can be configured.
The contrast is improved by covering at least the periphery of each phosphor layer 203 on the insulating substrate, preferably the entire area except for each phosphor layer 203, with a non-translucent insulating layer that has been blackened. It becomes possible to make it.

  The fluorescent light emitting display device according to the embodiment of the present invention includes a first insulating substrate (insulating substrates 101 and 401) and a second insulating substrate (facing the first insulating substrate). A vacuum hermetic container 100 having insulating substrates 102, 402), anode electrodes 104, 403 and phosphor layer 203 stacked on the inner surface of the first insulating substrate, and cathode stacked on the inner surface of the second insulating substrate. The electrodes 201 and 404 and the field electron-emitting device 202 are disposed on the inner surface side of at least one of the first and second insulating substrates, and hold the first and second insulating substrates at a predetermined interval. The spacer members 105, 204, 405, and 406, and a drive circuit that selectively drives the anode electrodes 104 and 403 and the cathode electrodes 201 and 404, the drive circuit including the electrode 104 that drives to emit light. It is characterized in that the voltage between the electrodes 104, 403, 201, 404 adjacent to 403, 201, 404 is driven below the threshold voltage at which electrons can be emitted from the field electron-emitting device. It becomes possible to perform light emission display without leaking light emission. Therefore, a high-definition graphic display device can be realized with a simple configuration.

  It can be used for a fluorescent light emitting display or a fluorescent light emitting display device.

It is a front view of the fluorescence type display which concerns on the 1st Embodiment of this invention. It is a fragmentary sectional side view of the fluorescence type display which concerns on the 1st Embodiment of this invention. FIG. 6 is a timing chart for explaining the operation of the fluorescent light emitting display device of the present invention. It is a fragmentary sectional side view of the fluorescence type display which concerns on the 2nd Embodiment of this invention. It is a fragmentary sectional side view of the fluorescence emission type display which concerns on the 3rd Embodiment of this invention. It is a sectional side view of a conventional fluorescent display tube.

Explanation of symbols

100 ... Vacuum hermetic containers 101, 401 ... Insulating substrates 102, 402 as first insulating substrates ... Insulating substrates 104, 403 as second insulating substrates ... Anode electrodes 201, 404 ... · Cathode electrode 503 · · · first electrode 504 · · · second electrode 202 · · · field emission device 203 · · · phosphor layer 105, 204, 405, 406, 505, 506 · · · spacer member

Claims (3)

A vacuum hermetic container having a first insulating substrate and a second insulating substrate disposed opposite to the first insulating substrate; a first electrode laminated on an inner surface of the first insulating substrate; One phosphor layer, a second electrode and a second phosphor layer laminated on the inner surface of the second insulating substrate, and an inner surface side of at least one of the first and second insulating substrates. A spacer member that holds the first and second insulating substrates at a predetermined interval, and the first and second phosphor layers are carbon nanotubes as field electron-emitting devices that emit electrons when an electric field is applied , A fluorescent light emitting display characterized in that at least one of carbon nanofibers, fullerenes, nanoparticles, nanocapsules, and carbon nanohorns is mixed and disposed to face each other.   2. The fluorescent display according to claim 1, wherein at least the periphery of the phosphor layer is covered with a non-translucent insulating layer that has been blackened. A vacuum hermetic container having a first insulating substrate and a second insulating substrate disposed opposite to the first insulating substrate; a first electrode laminated on an inner surface of the first insulating substrate; One phosphor layer, a second electrode and a second phosphor layer laminated on the inner surface of the second insulating substrate, and an inner surface side of at least one of the first and second insulating substrates. , A spacer member for holding the first and second insulating substrates at a predetermined interval, and a drive circuit for driving the first and second electrodes, wherein the first and second phosphor layers have an electric field At least one of carbon nanotubes, carbon nanofibers, fullerenes, nanoparticles, nanocapsules and carbon nanohorns is mixed and disposed so as to face each other as a field electron emission device that emits electrons by applying Said, Dynamic circuit, said opposed first fluorescence emission type display device and applying a voltage alternating to the second electrode.

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