JP2000323041A - Display discharge tube - Google Patents

Abstract

[PROBLEMS] To easily set a desired color balance and to obtain a display tube with high luminance and high efficiency. A partition wall (4R, 4R, 4R) formed on a first substrate 1 side is provided.
4G, 4B), and the red, green, and blue phosphors 10 (10R, 10G,
10B), the areas of the openings are made different so that the color balance at the time of lighting is controlled so as to be a desired one.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display discharge tube, and more particularly to a display discharge tube for selecting a pixel by an address operation using plasma discharge.

[0002]

2. Description of the Related Art A display discharge tube for selecting a pixel by an address operation using a plasma discharge, a so-called plasma display panel (hereinafter referred to as a PDP) has a direct current (DC) type.
Type) and AC type (AC type). In particular, AC type PD
P has a memory function using a wall charge, and a front glass substrate, which is a first substrate made of a glass substrate or the like, and a second glass substrate.
A display electrode, a first address electrode, and a second address electrode, which are covered with a dielectric layer crossing each other on an opposing inner surface of a rear glass substrate made of a glass substrate or the like,
An initial discharge, that is, an address discharge, is performed between the first address electrode and the second address electrode to charge the surface of the dielectric layer, and then the display electrode and the first address are selectively used by using the charging. The display is performed by causing a discharge between the electrodes.

A general three-electrode AC PDP will be described with reference to FIGS. 8, 9 and 10. FIG. FIG. 8 shows a conventional AC type P
FIG. 9 is a schematic perspective view of a DP, and FIG. 9 is a schematic sectional view of a conventional AC PDP. FIG. 10 is a schematic cross-sectional view of a conventional AC-type PDP for facilitating understanding of the structure, and shows the second substrate rotated by 90 ° with respect to the first substrate.

8 to 10, reference numeral 1 denotes a transparent front glass substrate as a first substrate, 2 denotes a rear glass substrate as a second substrate, 3 denotes a partition formed on the rear glass substrate, and 5 denotes a display. Electrodes (memory electrodes), 5a is a mother electrode constituting a display electrode, 5b is also a transparent electrode, 11 is a first address electrode, 11a is a mother electrode constituting a first address electrode, 1a
1b is a transparent electrode, 7 is a second address electrode, 8a is a transparent dielectric layer, 9 is a protective film (magnesium oxide film: Mg
O film), 10 are red, green, and blue phosphors.

On the back glass substrate 2 constituting the PDP, a plurality of stripe-shaped second address electrodes 7 parallel to each other are formed by a thick film technique such as screen printing or a thin film technique such as vapor deposition or etching. ing. The stripe-shaped barrier ribs 3 are formed by screen printing or sandblasting so as to surround the second address electrode 7 in parallel with the second address electrode 7 on the rear glass substrate 2.

[0006] Phosphors 10 of three primary colors of red, green, and blue are screen-printed for each color so as to cover the inside of each of the stripe-shaped partition walls 3 formed on the rear glass substrate 2 and the second address electrode 7. It is painted separately by the sandblast method or the like.

A plurality of second address electrodes 7 formed on the rear glass substrate 2 are arranged on the transparent front glass substrate 1 forming a tube in cooperation with the rear glass substrate 2 so as to be orthogonal to the plurality of second address electrodes 7. A first address electrode 11 and a display electrode 5 which are parallel to each other are formed by adhesion.

At the time of display, the second address electrode 7 and the first
An address discharge is performed between the address electrodes 11, and thereafter, a display discharge is performed between the first address electrode 11 and the display electrode 5. Ultraviolet light generated from the plasma of the discharge excites the phosphor 10 to emit visible light, which is extracted as display light through the front glass substrate 1.

A transparent dielectric layer 8a is formed on the first address electrode 11 and the display electrode 5 by printing or the like, and a protective film (MgO film) 9 is deposited thereon.

The front glass substrate 1 and the rear glass substrate 2 are sealed around the display area with frit glass. At the time of sealing, an exhaust pipe (not shown) is connected to the rear glass substrate 2 or the front glass substrate 1 at the same time. Thereafter, vacuum evacuation is performed while the whole is heated, a discharge gas is sealed, and the panel is sealed to complete the panel. .

[0011] Japanese Patent Application Laid-Open No. H10-177363 discloses this type of prior art.

[0012]

In a conventional AC type PDP as shown in FIGS.
Are formed at substantially uniform intervals, and red, green, and blue phosphors are regularly formed on the second address electrodes 7 and on the side surfaces of the stripe-shaped barrier ribs 3, respectively. However, if the red, green, and blue phosphors for PDP, which emit light by ultraviolet rays, emit light under a certain condition in a certain area of each discharge space (unit discharge space: hereinafter also referred to as a discharge cell), for example, a white color is obtained. The temperature was around 6000K.

In recent years, the white color is 900, depending on the application.
A color temperature of 0K to 10000K is preferred. In order to cope with this, conventionally, a color filter is provided, or a means such as a correction by a driving circuit so as to suppress the luminance of green and red from the luminance of blue is provided. However, when a color filter is used, the cost increases due to the increase in the number of constituent materials, and a decrease in characteristics other than the color temperature is unavoidable. There is a problem that the brightness and gradation of the display screen must be sacrificed.

[0014] The same means as described above is used not only to increase the color temperature but also to adjust it to a desired color temperature.

An object of the present invention is to provide a display discharge tube capable of easily displaying a desired white color, for example, at a high color temperature, without the necessity of using a color filter or performing correction by a drive circuit. is there.

[0016]

In order to achieve the above object, the present invention provides a phosphor having a different aperture area for red, green, and blue to achieve a desired color balance (color temperature) at the time of lighting. The value was controlled. A typical configuration of the present invention is described as follows.

(1) a first substrate having at least a plurality of display electrodes constituted by electrodes substantially parallel to each other and a plurality of first address electrodes arranged substantially in parallel with the display electrodes; A plurality of second address electrodes that are arranged opposite to the substrate and intersect the display electrode and the first address electrodes and are substantially parallel to each other; and at least a partition wall located between the plurality of second address electrodes. A second substrate on which a phosphor that emits red, green, and blue light is formed for each partition, and a dielectric layer that covers the display electrode and the first address electrode. A unit discharge space defined therein includes at least the display electrode, the first address electrode, and the second address electrode, and gas is sealed between the first substrate and the second substrate. Discharge area A formed the display discharge tube, the area of the opening of the phosphor viewed from the first substrate side,
Red, green, and blue phosphors were different.

With the above configuration, the white color temperature of the displayed image can be set to a desired value, and a high-luminance image can be obtained without using a color filter or complicating the configuration of a driving circuit.

(2) The first substrate in (1) is provided with a partition wall for forming the unit discharge space facing the partition wall of the second substrate.

With this configuration, crosstalk between adjacent discharge spaces is suppressed, and a high-quality image can be obtained.

(3) Assuming that the area ratio of the opening of the phosphor when viewed from the first substrate side in (1) and (2) is 100 for blue, red is approximately 93 to 97 , Green is about 9
6 to about 100.

With the above area ratio, 9000
An image display with a white color temperature of K to 10,000K is obtained.

It should be noted that the present invention is not limited to the above configuration and the embodiments described later, and various changes can be made without departing from the technical idea of the present invention.

[0024]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view for explaining a schematic structure of one embodiment of a display discharge tube according to the present invention, FIG. 2 is a sectional view for explaining a schematic structure of the display discharge tube shown in FIG. 1, and FIG. Is
FIG. 4 is a schematic cross-sectional view for explaining the operation of the first embodiment of the display discharge tube according to the present invention. FIG. 4 is a schematic view of an electrode arrangement for explaining the electrode configuration of the front glass substrate in the first embodiment of the display discharge tube according to the present invention.

As shown in FIGS. 1 to 4, the first address electrode 6 formed on the front glass substrate 1 and the back glass substrate 2
Address electrode pair composed of the second address electrode 7 formed on the substrate and a display electrode pair 5 composed of the electrode 5M1 and the electrode 5M2.
Are independently provided, so that the display electrode pair 5 is an electrode constituting the electrode pair in an adjacent discharge space (also referred to as a discharge cell or a display cell; simply referred to as a cell in FIG. 4). 5M1 and the electrode 5M2 can be commonly used. By forming the grid-like partition walls 3 on the rear glass substrate 2, a clear image free from crosstalk can be obtained.

FIG. 5 is a process diagram for explaining the manufacturing process of the first embodiment of the display discharge tube according to the present invention. Referring to FIG. 1
The manufacturing process of the embodiment will be described.

Front glass substrate 1 and rear glass substrate 2
Is 2.0 mm thick soda glass, and the display cell pitch is 0.33 mm in the horizontal (X direction) and 1.0 mm in the vertical (Y direction). The thickness of each of the above glass substrates is
Basically, there is no particular limitation as long as there is vacuum strength and there is no problem in handling. In addition, when high strain point glass is used as the material of the glass substrate, it is more suitable than soda glass because it is not affected by changes in the operating environment.

Referring to FIG. 5, first, electrodes 5M1 and 5M2 constituting the display electrode pair 5 and transparent electrodes 5b and 6b for the first address electrode 6 are formed on the front glass substrate 1 with a width of 0.60 mm and a thickness of 0.5 mm respectively. A pattern is formed to a thickness of 15 mm with, for example, an ITO film. The electrodes 5M1 and 5M2 and the first
For example, a Cr-Cu-Cr multilayer film having a width of 0.06 mm is formed as a mother electrode 5a, 6a on the transparent electrodes 5b, 6b of the address electrode 6 at, for example, a central portion by a thin film process.

By using the transparent electrode 5b and the mother electrode 5a as the electrodes constituting the display electrode pair 5, it is possible to increase the electrode area while suppressing a decrease in light transmittance and an increase in electric resistance.

When a transparent electrode and a mother electrode are used as the first address electrode 6 in the same manner as the electrodes 5M1 and 5M2 of the display electrode pair 5, a decrease in light transmittance and an increase in electric resistance can be suppressed. The area can be increased.

Further, here, an example is described in which transparent electrodes are used for the electrodes 5M1 and 5M2 constituting the display electrode pair 5 and the first address electrode 6, but the electrodes 5M1 and 5M2 of the display electrode pair 5 are used. Each of the first address electrode 6 and the first address electrode 6 does not necessarily need to use a transparent electrode. In particular, in the case where the electrodes 5M1 and 5M2 of the display electrode pair 5 are not used as the transparent electrodes, and are formed as an electrode pattern including only the mother electrode, for example, if the electrode width is formed to 0.2 to 0.4 mm,
Although the electrode spacing is increased and the discharge sustaining voltage is increased, the luminous efficiency can be increased.

The material of the mother electrodes 5a and 6a may be a material having a small electric resistance, and there is no problem even if a metal such as Ag, Ni, Al or Au or a multilayer film such as Cr-Au-Cr is used.

Further, in the above description, the ITO film is used as the transparent electrode. However, if the electrode area can be secured without lowering the transmittance, there is no problem. Therefore, it is possible to use another Nesa film or the like. Needless to say.

After the display electrode pair 5 and the first address electrode 6 are formed, a transparent dielectric layer 8a made of transparent glass or the like is formed on the entire surface so as to cover them.

Further, a stripe-shaped partition wall 4 (4R) is provided at a position facing a portion parallel to the extending direction of the second address electrode 7 of the lattice-shaped partition wall 3 formed on the rear glass substrate 2 to be described later during sealing and evacuation. , 4G, 4B) at a height of 0.02 m
m. This striped partition 4 (4R, 4G,
4B) is made of glass or the like. For example, when a plurality of layers are laminated by printing, at least the first layer can be made black to improve the contrast.

Here, the width (thickness in the direction parallel to the substrate) of the stripe-shaped partition walls 4 (4R, 4G, 4B) formed on the inner surface of the front glass substrate 1 and the exact formation position will be specifically described. In this embodiment, as shown in FIGS. 1 and 2, grid-like partition walls 3 (3R, 3R) formed on the inner surface of the back glass substrate 2 are formed.
G, 3B), the width of the stripe-shaped partition 4R facing the partition 3R separating the blue and red phosphors 10B and 10R is 0.086 mm, and the width of the red phosphor 10B is 0.080 mm.
The protrusion is formed at the position where the protrusion width ΔW = 0.006 mm protrudes to the R side.

On the other hand, the width of the stripe-shaped partition wall 4G facing the partition wall 3G separating the red and green phosphors is 0.086 mm.
And is formed at a position where the width of the protrusion ΔW = 0.006 mm protrudes toward the red phosphor. The width of the stripe-shaped partition wall 4B facing the partition wall 3B that separates the green and blue phosphors is 0.1 mm.
085 mm, and the width ΔW protruding toward the green phosphor 10G side.
= 0.005 mm.

As described above, the partition walls 4 (4
R, 4G, 4B), the width of the opening as viewed from the front glass substrate 1 side is 0.238 mm with respect to the red phosphor, while the cell pitch in the horizontal direction is 0.33 mm.
It is 0.245 mm for the green phosphor and 0.250 mm for the blue phosphor. When a display discharge tube having this configuration was manufactured and lit after completion, the balance of the luminance of the three primary colors became good, and for example, white with a color temperature of 9600K was easily obtained.

Next, after the stripe-shaped partition walls 4 are formed, an MgO film is formed as a protective film 9 to a thickness of 500 to 800 nm by a known method such as electron beam evaporation (EB evaporation).

On the other hand, on the rear glass substrate 2, the second address electrodes 7 (7R, 7G, 7B) have an electrode width of 0.10 m.
m, a metal such as Ag, Ni, Al, Au or Cr-Cu-
It is formed by a printing method or a photo process with a multilayer film of Cr, Cr-Au-Cr, or the like. A white dielectric layer 8 is formed on this electrode.
b is formed to a thickness of 0.015 mm by printing an insulating material such as white glass or the like.

It should be noted that there is no significant difference in basic functions whether or not the white dielectric 8b is formed. However, the utilization of the reflected light from the phosphor 10 is improved by the formation of the white dielectric 8b, and the white dielectric 8b serves as a protective film for the second address electrode 7 when the grid-like partition 3 is formed by using sandblast. .

One direction is the second address electrode 7.
And the direction crossing the second address is substantially opposite to the center of each of the electrodes 5M1 and 5M2 constituting the display electrode pair 5 on the front glass substrate 1 after exhausting, that is, the second address. The portion parallel to the extending direction of the electrode 7 is overlapped with the black stripe-shaped partition wall 4 formed on the front glass substrate 1 after exhaust, and the portion perpendicular to the extending direction of the second address electrode is The grid-like partition 3 is formed by printing or sandblasting so that the width of the zenith becomes 0.080 mm so that the display electrode pair 5 and the first address electrode 6 are present in the display cell defined by the partition. I do.

The lattice partition 3 on the rear glass substrate 2
Is formed by, for example, baking a laminate obtained by laminating a thick film paste by screen printing or a thick film paste formed on the entire surface by sandblasting.

Thereafter, on the second address electrode 7 or on the inner wall surface of the grid-like partition 3, the paste-like phosphor 1 of each color of red, green and blue is arranged so as to be the same color in the extending direction of the second address electrode 7.
0 is formed by printing or the like. The height of the grid-like partition walls 3 on the rear glass substrate 2 of this embodiment is 0.15 mm.

As described above, the front glass substrate 1 and the rear glass substrate 2 are manufactured. The front glass substrate 1 and the rear glass substrate 2 thus obtained are arranged such that the lattice-shaped partition walls 3 formed on the rear glass substrate 2 and the stripe-shaped partition walls 4 formed on the front glass substrate 1 are at the above-described opposing positions. And an exhaust pipe (not shown) is fixed with frit glass.

Next, heating and degassing are performed in the exhausting step, and thereafter, a discharge gas is sealed and the chip is turned off. The discharge gas is an ionizable gas such as Ne-Xe or He-Xe, and is sealed at 25 ° C. at a pressure of approximately 500 Torr.

Note that the type and pressure of the gas to be sealed do not greatly affect the basic function of the present invention.

In the display discharge tube of this embodiment, the case where the partition walls 4 formed on the front glass substrate 1 protrude to one side of the two color phosphors separated by the partition walls 3 formed on the rear glass substrate 2 will be described. However, the present invention is not limited to this,
It goes without saying that the same effect can be obtained if the ratio of the openings when viewed from the front glass substrate 1 side is a desired one even if they protrude from both sides.

Further, in the display discharge tube of this embodiment, the case where the shape of the partition wall 4 formed on the front glass substrate 1 is a stripe has been described. However, the present invention is not limited to this. There may be. The partition walls 4 may be formed so that the areas of the red, green, and blue openings are in a desired ratio.

In the display discharge tube of this embodiment, the case where the shape of the partition walls 3 formed on the rear glass substrate 2 is a lattice shape has been described, but may be a stripe shape.

In the display discharge tube of this embodiment, the case where the partition 4 is formed on the front glass substrate 1 has been described. However, the present invention is not limited to this, and the partition 4 is formed on the front glass substrate 1.
Need not be formed, the shape of the partition walls 3 formed on the rear glass substrate 2 may be similarly controlled so that the ratio of the openings of the phosphors as viewed from the front glass substrate 1 side becomes a desired one. . In this case, at least the zenith of the partition wall 3 formed on the rear glass substrate 2 is black, which is effective for increasing the contrast ratio.

In the display discharge tube of the present embodiment, the electrodes 5M1 and 5M2 constituting the display electrode pair 5 may be bundled either outside the discharge tube or inside the discharge tube (in the panel). There is no big difference in the functional features. One of the electrodes constituting the display electrode pair by electric capacitance, for example, 5M1
Of the electrode 5M1 and the electrode 5
Even if M2 is bundled, there is no great difference in basic functions.

In the display discharge tube of this embodiment, the display electrode pair for performing main discharge for display and the address electrode pair for mainly performing address discharge are separated, so that the reactive power of the main discharge can be easily collected. Can be done. That is, as shown in FIG. 4, the electrodes 5M1 and 5M2 that perform the main discharge can be commonly connected, and a power recovery circuit that recovers the reactive power of the main discharge can be easily connected.

Further, for the main discharge for display, a driving circuit common to each cell can be used for each of 5M1 and 5M2 constituting the display electrode pair 5, and high luminance and high luminance can be obtained.
An adverse effect on the drive circuit due to an increase in the discharge voltage of the main discharge due to the separation of the electrodes for obtaining high efficiency is extremely small.

FIG. 6 is a block diagram illustrating a schematic configuration of a display device using the discharge tube for display of this embodiment. A display electrode 5 is provided around the PDP 20 having the configuration of the above embodiment.
M1 drive circuit 21a, display electrode 5M2 drive circuit 21b,
A first address electrode drive circuit 22 and second address electrode drive circuits 23a and 23b are arranged. Then, the display electrode 5M1 drive circuit 21a and the display electrode 5M2 drive circuit 21
b is provided with reactive power recovery circuits 24a and 24b.

In FIG. 6, the electrodes 5M1 and 5M2 constituting the display electrode pair 5 and the first address electrode driving circuit based on a video signal and a synchronization signal input from a display signal source such as a host computer or a television receiving circuit. 23
a, 23b, second address electrode drive circuits 23a, 23b
The required image is displayed by supplying a drive signal to the.

The reactive power recovery circuit 25 is composed of a current source for charging the display cell of the PDP and an external capacitance connected in parallel to the stray capacitance of the display cell. Reactive power in the main discharge of the display electrode constituting the display cell is collected in an external capacity, and is used as energy for the next main discharge. Thereby, power consumption is reduced.

In the display discharge tube having a circuit configuration as shown in FIG. 6, since the electrodes 5M1 and 5M2 for performing the main discharge are connected in common, a power recovery circuit for recovering the reactive power of the main discharge is easily provided. 5M
1 and the electrode 5M2 can use a common drive circuit for each cell.

FIG. 7 is a waveform chart for explaining an example of a driving method of the display discharge tube of the present embodiment. First, in order to make all the discharge cells of the display discharge tube uniform, that is, the charges on the electrodes 5M1 and 5M2 constituting the display electrode pair 5, the first address electrode 6 and the second address electrode 7 are initialized. In order to make the state, the pulse P _WSA is applied to the electrode 5M1 and the pulse P _WSA is applied to the first address electrodes 6 (6-1, 6-2,..., 6-n).
A reset discharge for erasing wall charges on the electrodes in the discharge cells is performed by applying _WSK .

After the reset, the voltage waveforms V _M2 and V _{C +} shown in the figure are applied to the electrodes 5M1 and 5M2 and the first address electrode 6 during the electric field 1 application period, and negative space charges generated by the reset discharge are applied to the electrodes on the front glass substrate. Positive charges are accumulated in the group as wall charges on the electrode group on the rear glass substrate.

Thereafter, during the address period, the electrodes 5M1 and 5M
2 and the first address electrodes 6 (6-1, 6-2,.
to n), respectively the voltage waveform V _M1-, the pulse P _C, second
The by applying a pulse P _C to the address electrode 7 (7-n) 1
An address discharge is caused between the address electrode 6 and the second address electrode 7 (7-n).

The voltage waveform V _C- is applied to the first address electrodes 6 (6-1, 6-2,... 6-n) during the electric field 2 application period after the address discharge, and the space charges generated by the address discharge are removed. The electrodes 5M1 and 5M2 and the first address electrode 6 (6-1, 6-
2,... 6-n) as wall charges.

Thereafter, at the beginning of the main discharge, that is, the display discharge period, the first address electrodes 6 (6-1, 6-2,.
The pulse P _TC in n), the pulse P _TM1 to electrode 5M1, electrode 5M1 by applying a pulse P _TM2 to electrode 5M2 and the electrode 5
The discharge is transferred between the two. After the transition of this discharge, the electrode 5M
1 and the electrode 52 are alternately _supplied with two types of pulses P _{SM + and} P _SM− to cause a main discharge to be performed.
M1 and a pulse P for erasing wall charges on the electrode 52
_{Apply SSM + and} P _SSM- . The required image is displayed by repeating the above driving sequence.

In the display discharge tube having the four-electrode structure of the present embodiment described above, the electrodes 5M constituting the display electrode pair
The electrodes 5M1 and 5M2, which constitute the display electrode pair, are commonly used in adjacent discharge regions.
A structure in which the distance between M2 is large can be provided. By providing stripe-shaped partitions 4 on the front glass substrate 1 and lattice-shaped partitions 3 on the rear glass substrate 2,
Even if the electrodes 5M1 and 5M2 constituting the display electrode pair 5 are commonly used in adjacent discharge regions, a required color balance, for example, without crosstalk, for example, by a driving sequence as shown in FIG. White with high color temperature can be realized with high efficiency and high luminance.

The specific numerical values in the above embodiment are merely examples, and the present invention can be configured with optimal numerical values according to the discharge cell pitch, the discharge space size, and other conditions.

In the display discharge tube of this embodiment, a structure in which one discharge cell has a total of four electrodes, ie, an address electrode pair and a display electrode pair, has been described. It is self-evident that the above effect can be obtained.

[0068]

As described above, according to the present invention,
The area of the opening of the phosphor as viewed from the first substrate side is
By making the colors red, green, and blue different, the color balance at the time of lighting can be controlled so as to be the desired one, and high efficiency and high efficiency can be achieved without installing color filters or complicating the drive circuit. It is possible to easily obtain a desired color balance with luminance, for example, white with a high color temperature.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view illustrating a schematic structure of an embodiment of a display discharge tube according to the present invention.

FIG. 2 is a cross-sectional view illustrating a schematic structure of the display discharge tube shown in FIG.

FIG. 3 is a schematic sectional view for explaining the operation of the first embodiment of the display discharge tube according to the present invention.

FIG. 4 is a schematic view of an electrode arrangement for explaining an electrode configuration of a front glass substrate in a first embodiment of a display discharge tube according to the present invention.

FIG. 5 is a process diagram illustrating a manufacturing process of the first embodiment of the display discharge tube according to the present invention.

FIG. 6 is a block diagram illustrating a schematic configuration of a display device using a display discharge tube according to one embodiment of the present invention.

FIG. 7 is a waveform diagram illustrating an example of a method of driving the display discharge tube according to the present embodiment.

FIG. 8 is a schematic perspective view of a conventional AC PDP.

FIG. 9 is a schematic sectional view of a conventional AC PDP.

FIG. 10 is a schematic cross-sectional view of a conventional AC type PDP, in which a second substrate is rotated by 90 ° with respect to the first substrate in order to facilitate understanding of the structure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Front glass substrate which is 1st substrate 2 Rear glass substrate which is 2nd substrate 3, 4 Partition wall 5 Display electrode pair 5M1, 5M2 Electrode (memory electrode) which comprises a display electrode 5a Mother electrode 5b Transparent electrode 6 First address electrode 6a Mother electrode 6b Transparent electrode 7 Second address electrode 8a Transparent dielectric layer 8b White dielectric layer 9 Protective film 10 Phosphor.

Continued on the front page (72) Inventor Yuichi Kijima 3300 Hayano, Mobara-shi, Chiba Prefecture Within Hitachi, Ltd. Display Group (72) Inventor Norio Nakamura 3300, Hayano, Mobara-shi, Chiba Prefecture, Within Hitachi Display Group (72) Inventor Hiroshi Kawasaki 3681 Hayano, Mobara-shi, Chiba F-term in Hitachi Device Engineering Co., Ltd. (reference) 5C040 FA01 FA04 GB03 GB14 GC03 GC11 GF03 GF04 GF14 GF16 GG03 GG05 LA02 LA14 MA02 MA03 MA05 MA20

Claims (3)

[Claims] A first substrate having at least a plurality of display electrodes formed of electrodes substantially parallel to each other, and a plurality of first address electrodes arranged substantially in parallel with the display electrodes; At least a plurality of second address electrodes, which are arranged opposite to the substrate and intersect the display electrodes and the first address electrodes and are substantially parallel to each other, and at least a partition wall located between the plurality of second address electrodes. A second substrate on which a phosphor that emits red, green, and blue light is formed for each partition; a dielectric layer covering the display electrode and the first address electrode; and a partition defined by the partition. Having at least the display electrode, the first address electrode, and the second address electrode in a unit discharge space to be formed,
In a display discharge tube in which a gas is sealed between the first substrate and the second substrate to form a discharge region, an area of an opening of the phosphor as viewed from the first substrate is: A display discharge tube characterized in that each of the red, green and blue phosphors is different. 2. The display discharge tube according to claim 1, wherein the first substrate has a partition wall facing the partition wall of the second substrate to form the unit discharge space. 3. When the area ratio of the openings of the phosphor as viewed from the first substrate side is 100 with blue, red is approximately 9%.
3. The display discharge tube according to claim 1, wherein 3 to about 97 and green about 96 to about 100. 4.