JPH10199427A - Discharge tube for display and its driving method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To separate the distance of display electrodes, widen the electrode area, and display an image with high intensity and high efficiency by arranging a display electrode, a first address electrode, and a second address electrode in one pixel, and commonly using the display electrode in between two pixels by using a barrier rib. SOLUTION: A pair of electrodes of a first address electrode (cathode) 6 and a display electrode 5 comprising a mother electrode 5a and a transparent electrode 5b arranged on both sides of the first address electrode 6, and a second address electrode (anode) 7 are arranged in a display pixel formed with a discharge region partitioned with a barrier rib 4 on a front glass substrate 1 side and a barrier rib 3 on a back glass substrate 2 side. By separating the address electrode 6 and the display electrode 5, the display electrode 5 can commonly use the display electrode 5 for constituting a pair of electrodes in the adjacent discharge region. The distance between the display electrodes 5 can be separated, and light emitting efficiency and brightness can be enhanced.

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 pixels by an address operation using plasma discharge and a driving method thereof.

[0002]

2. Description of the Related Art A display discharge tube for selecting a pixel by an address operation using plasma discharge, a so-called plasma display panel (hereinafter also referred to as a PDP) is a direct current (DC) type.
Type) and AC type (AC type), or a hybrid type obtained by combining these types. In particular, the AC-type PDP has a memory function utilizing wall charges, and is provided on the opposing inner surfaces of a first substrate which is a front plate made of a glass substrate or the like and a second substrate which is a back plate made of a glass substrate or the like. It has a first electrode (display electrode) and a second electrode (address electrode) covered with intersecting dielectric layers, and performs an initial discharge, that is, an address discharge, between the address electrode and the display electrode to perform dielectric discharge. An electric charge is charged on the surface of the body layer, and thereafter, display is performed by utilizing a discharge between the display electrode and the charged potential of the dielectric layer.

FIGS. 22 to 24 show a conventional AC type PDP.
Will be described.

FIG. 22 is a schematic perspective view of a conventional AC PDP, and FIG. 23 is a schematic sectional view of a conventional AC PDP.
Note that in FIG. 23, the first substrate is shown rotated by 90 ° with respect to the second substrate in order to facilitate understanding of the structure.

In FIGS. 22 and 23, 1 is a transparent front glass substrate as a first substrate, 2 is a rear glass substrate as a second substrate, 3 is a partition, 5 is a display electrode (memory electrode), 5a is a mother electrode, 5b is a transparent electrode, 7 is an address electrode, 8a is a dielectric layer, 9 is a protective film (MgO), and 10 is an R, G, B phosphor.

On the back glass substrate 2 constituting the PDP, a plurality of parallel stripe-like address electrodes 7 are provided.
Is formed by a thick film technique such as screen printing or a thin film technique such as vapor deposition or etching, and a stripe-shaped partition wall 3 is formed by screen printing so as to surround the address electrode 7 in parallel with the address electrode 7 on the rear glass substrate 2. , Formed by a sand blast method or the like.

The phosphors 10 of the three primary colors R, G, and B are separately applied to the inside of the stripe-shaped partition walls 3 by screen printing, sand blasting, or the like.

On a transparent front glass substrate 1 which forms a tube in cooperation with the rear glass substrate 2, a plurality of parallel and mutually parallel address electrodes 7 formed on the rear substrate 2 are provided. A display electrode 5 is formed. Note that one display pixel has two display electrodes 5.

During display, an address discharge is performed between the address electrode 7 and one display electrode 5 in one display pixel, and thereafter, a display discharge is performed between the two display electrodes 5.
The display electrode 5 is a so-called memory electrode. The phosphor 10 is excited by the plasma of the discharge of the display electrode to emit ultraviolet light, which is extracted from the front substrate 1 as display light.

The dielectric layer 8a is formed on the display electrode 5.
Is formed by printing or the like, and a protective film (MgO
Film 9 is deposited. Further, a discharge gas is sealed in the inside of the tube constituted by the front glass substrate 1 and the rear glass substrate 2.

FIG. 24 shows a hybrid type P according to the prior art.
It is sectional drawing which shows DP.

Referring to FIG. 1, a plurality of orthogonal address electrodes 22 and 23 having a self-scanning function by direct current discharge (DC discharge) are provided on the rear glass substrate 2 side. A semi-AC type memory section comprising a front electrode 17 provided on the front glass substrate 1 side where a discharge space is coupled between the address electrodes 22 and 23, and a perforated metal plate 20 having a plurality of through holes opposed thereto. (AC type memory unit) is provided.

An insulating substrate 24 is provided in each gap between the plurality of address electrodes 22, the transparent entire surface electrode 17 is covered with a transparent insulating layer 18, and a space between the perforated metal electrode plate 20 and the transparent insulating layer 18 is provided. And perforated metal electrode plate 20 and insulating substrate 24
Partition walls 19 and 21 are respectively provided between them, and they are sealed in a tube composed of a back glass substrate 2 and a front glass substrate 1 having a discharge gas therein.

In this hybrid type PDP, the electrons generated by the discharge between the address electrodes 22 and 23 are drawn out to the memory side by the voltage applied to the perforated metal electrode plate 20, and are extracted by the transparent insulating layer 18 on the front glass substrate 1 side. Transparent full surface electrode 1 covered
AC type discharge is maintained between the metal electrode 7 and the perforated metal electrode plate 20.

This type of hybrid type PDP is designed to simplify the circuit by the self-scanning function and to increase the brightness by the memory function.

The above PDP is disclosed in Japanese Patent Publication No. 3-7646.
No. 8 discloses this.

[0017]

In the conventional AC type PDP shown in FIG. 22, the control of the presence or absence of discharge between adjacent display electrodes is performed by the difference in distance. It is not possible to cope with an increase in luminance due to separation (by widening the electrode width, etc.).

On the other hand, the conventional hybrid type PDP shown in FIG. 24 has a complicated structure, which makes mass production difficult, and has the following problems. That is, in order for this PDP to operate reliably, the diameter of the hole for connecting the discharge space on the address side and the memory side must be increased to strengthen the connection between the two discharge spaces. If the diameter is too large, there is a contradiction that the separation between the two discharge spaces becomes uncertain. When erasing memory discharge,
The wall charge accumulated on the insulating layer on the transparent electrode on the front glass substrate side must be erased. It becomes difficult. Further, when the diameter of the hole is large, there is a problem that stable addressing and self-scanning function are impaired due to the influence of memory discharge.

The perforated metal plate separating the address side and the display side of the PDP may have a metal layer formed on an insulator without using a metal plate, even if a part of the metal plate is covered with an insulating layer. However, since it is an essential requirement for operation that the metal electrode is exposed, high-precision structural separation is required for insulation from the DC scanning unit and stable operation.
This makes production more difficult. In addition, half AC
Because of the mold operation, the wall charges contributing to the memory are accumulated only on one side of the address side, so that there is a problem that the memory function is weak and the discharge sustaining voltage is high.

An object of the present invention is to provide a display discharge tube which solves the above-mentioned problems of the conventional PDP, simplifies the structure, and enables high-brightness and high-definition display, and a driving method thereof. It is in.

[0021]

The outline of the configuration of the present invention for achieving the above object will be briefly described as follows.

That is, the display discharge tube according to the present invention has a display electrode and an address electrode pair covered with a dielectric layer, and at least one address electrode is covered with the dielectric layer to provide a display. The electrodes are commonly used in the two discharge spaces by the partition walls. As a result, the distance between the display electrodes can be increased, and the electrode area can be increased.
An image display with high brightness and high efficiency can be obtained.

Hereinafter, the constitutions of the present invention will be enumerated as follows.

(1) a first substrate having a plurality of display electrodes constituted by electrodes substantially parallel to each other, and a plurality of first address electrodes arranged substantially parallel to the display electrodes; A second substrate having a plurality of second address electrodes disposed to face the substrate, intersecting the display electrode and the first address electrode, and substantially parallel to each other, wherein the first substrate and the second substrate are provided. A display discharge tube in which a discharge region is formed by sealing a gas between the display electrode, the display electrode, the first address electrode, and the first address electrode in one pixel. And two display electrodes, wherein the display electrodes are arranged adjacent to each other in the direction in which the second address electrodes extend.

(2) A first substrate having a plurality of display electrodes substantially parallel to each other, and a plurality of first address electrodes arranged substantially in parallel with the display electrodes, and disposed facing the first substrate. A second substrate having a plurality of second address electrodes intersecting the display electrode and the first address electrode and being substantially parallel to each other, wherein a second substrate is provided between the first substrate and the second substrate. A display discharge tube in which a discharge region is formed by filling a gas has a dielectric layer covering the display electrode, and the display electrode, a first address electrode, and a second address electrode are provided in one pixel. The display electrode is commonly arranged for pixels adjacent in the direction in which the second address electrode extends.

(3) A display electrode common to the adjacent pixels is provided by a partition formed on the display electrode in (2).

(4) The distance D (mm) between the display electrode and the first address electrode in (2), the width W (mm) of the display electrode, the plane of the first substrate and the first The relationship between the distance (hereinafter abbreviated as gap) L (mm) of the discharge space in a direction substantially perpendicular to the plane of the substrate 2 and the pressure P (torr) of the sealed gas is represented by K = ((√ D) / (W / 2 + D)) / (1000 × (√
L) / P), wherein 0.5 ≦ K ≦ 2.

(5) A first substrate having a plurality of display electrodes substantially parallel to each other, and a second substrate forming a discharge space together with the first substrate, wherein the first substrate intersects the display electrodes and A second address electrode comprising a plurality of electrodes substantially parallel to each other and a first address electrode intersecting with the second address electrode and being parallel to each other;
A display discharge tube in which a gas is sealed between substrates to form a discharge region, comprising a dielectric layer covering the display electrode, wherein the display electrode comprises an electrode pair arranged in one pixel. A first address electrode and a second address electrode disposed in one pixel to form a four-electrode structure, and at least one of the first address electrode and the second address electrode is covered with a dielectric layer. And

(6) One of the pair of electrodes forming the display electrode in (5) and the pair of electrodes forming the display electrode adjacent to each other in a pixel adjacent in the extending direction of the second address electrode. An electrode adjacent to one of the electrodes forming the electrode pair has the same potential.

(7) An electrode constituting a display electrode covered with a dielectric layer and arranged in parallel at a predetermined interval on one of the first substrate and the second substrate in (5) or (6). A pair, a first address electrode covered with a dielectric layer, and a second address electrode.
It is characterized in that one or both of the address electrodes are provided.

(8) A first address electrode is provided on the one substrate on which the electrode pair constituting the display electrode in (7) is formed, and a second address electrode is provided on the other substrate. A dielectric layer covering the second address electrode is provided. (9) The method according to (7), wherein the second address electrode is disposed so as to be exposed to the discharge region.

(10) A substantially stripe shape is formed on the other substrate, which is disposed opposite to the one substrate on which the electrode pair constituting the display electrode and the first address electrode in (8) or (9) are formed. Characterized by having a partition wall.

(11) The display device according to (8) to (10), wherein the first address electrode is interposed between the electrodes constituting the electrode pair of the display electrode, and is formed on the same substrate. (12) One of the electrode pairs constituting the display electrode in (11) is formed by a partition wall formed between one substrate on which the display electrode is formed and the other substrate opposed to the one substrate. , One of an electrode pair forming a display electrode of two adjacent discharge regions.

(13) One electrode of the pair of electrodes constituting the display electrode in (12) constitutes one display electrode common to two adjacent discharge spaces, and the one common display electrode The width W (mm), the distance D (mm) between the common one display electrode and the other electrode constituting the display electrode adjacent to the common one display electrode, and the pressure P (to
rr) and the distance L (mm) of the discharge space in a direction substantially perpendicular to the one substrate plane and the other substrate plane is represented by K = (√ (D) / (W / 2 + D)) / (1000 × √
(L) / P), wherein 0.5 ≦ K ≦ 2.

(14) In the liquid crystal display device having the constitution (12), there is provided an electrode pair which constitutes a display electrode of the two adjacent discharge regions by the adjacent partition wall.

(15) The height d (μm) of the partition wall formed on the common one display electrode in (12) or (14), and the pressure P (tor) of the sealed gas.
r) is 4000 / P ≦ d ≦ 40000 / P.

(16) The structure according to (12) or (14), wherein the shape of the partition wall formed on the display electrode is substantially a lattice.

(17) The display device according to (12) or (14), further comprising a substantially grid-shaped partition formed on the display electrode, and having the substantially striped partition on the other substrate. 2. The method according to claim 1, wherein two sides of the partition and the substantially stripe-shaped partition are overlapped.
15. The display discharge tube according to 2 or 14.

(18) (8) (9) (11) (12)
Alternatively, in (14), a grid-shaped partition wall is provided on the other substrate disposed opposite to the one substrate on which the electrode pair constituting the display electrode and the first address electrode are formed. Features.

(19) (12) (14) or (1)
8) The distance of the discharge space in a direction substantially perpendicular to the first substrate plane and the second substrate plane in 60 to 250 μm.
m.

(20) (12) (14) or (1)
In 8), the ratio of the width of the display electrode to the pitch of the display region in the direction intersecting the extending direction of the display electrode and the display electrode is 0.05: 1 to 0.8: 1. It is characterized by the following.

(21) The display electrode according to (20), wherein the display electrode comprises a transparent electrode and a mother electrode made of a conductor having a different electric resistance from the transparent electrode.

(22) The display device according to (21), wherein the mother electrode of the display electrode is arranged so as to overlap a partition formed on the display electrode.

(23) The ratio of the electrode width of the mother electrode of the display electrode in (21) or (22) to the pitch of the display area in a direction intersecting with the extending direction of the display electrode is 0.05: 1 to 0.3: 1.

(24) (1) The display electrode or the electrode pair constituting the display electrode in (2) or (5) is bundled into one or more pieces in a display discharge tube. And

(25) The distance between the width of at least one address electrode covered with the dielectric layer in (5) and the pitch of discharge regions arranged in the direction in which the pair of electrodes constituting the display electrode extends. The ratio is 0.03: 1 to 0.4: 1.

(26) In the constitution (25), at least one address electrode covered with the dielectric layer comprises a transparent electrode and a mother electrode made of a conductor having a different electric resistance from the transparent electrode. I do.

(27) In (26), the ratio of the width of the mother electrode constituting the address electrode to the pitch of the discharge region arranged in the extending direction of the electrode pair constituting the display electrode is 0.03. : 1 to 0.1: 1.

(28) A first substrate having a plurality of display electrodes constituted by a pair of electrodes substantially parallel to each other, and a plurality of first address electrodes arranged substantially parallel to the display electrodes;
The display electrode and the first electrode are disposed opposite to the first substrate.
A plurality of second electrodes intersecting the address electrodes and substantially parallel to each other;
A method for driving a display discharge tube, comprising: a second substrate having an address electrode, wherein a discharge region is formed by filling a gas between the first substrate and the second substrate. A display electrode comprising a pair of electrodes; an address electrode pair; at least one address electrode being covered with the dielectric layer, between the display electrode pair or the display electrode; After a reset discharge is performed between the pair of electrodes and the address electrode to erase charges on the electrode surface, an address discharge is performed between the pair of address electrodes, and a space charge generated by the address discharge is applied to the pair of electrodes of the display common electrode. It is characterized in that a main discharge for display is performed between the electrode pairs by accumulating.

(29) A first substrate having a plurality of display electrodes constituted by electrode pairs substantially parallel to each other, and a plurality of first address electrodes arranged substantially in parallel with the display electrodes; A second substrate having a plurality of second address electrodes disposed to face the display electrode and intersecting the display electrode and the first address electrode, and being substantially parallel to each other, wherein the first substrate and the second A method for driving a display discharge tube in which a discharge region is formed by sealing a gas between the substrate and a substrate, comprising a dielectric layer covering the display electrode, wherein the display electrode is formed of an electrode pair; An address electrode pair is provided, at least one address electrode is covered with a dielectric layer, and a reset discharge is caused between the display electrode pair or between the display electrode pair and the address electrode to cause a charge on the electrode surface. After accumulating evenly, The discharge between the serial address electrode pairs, characterized in that erasing the wall charges accumulated in the electrode pair of the display electrodes.

(30) A first substrate having a plurality of display electrodes constituted by pairs of electrodes substantially parallel to each other, and a plurality of first address electrodes arranged substantially in parallel with the display electrodes; A second substrate having a plurality of second address electrodes that are arranged to face the display electrode and intersect with the display electrode and the first address electrode, and are substantially parallel to each other. The first substrate and the second substrate A method for driving a display discharge tube in which a discharge region is formed by sealing a gas between the substrate and a substrate, comprising a dielectric layer covering the display electrode, wherein the display electrode is formed of an electrode pair; An address electrode pair, and at least one address electrode covered with a dielectric layer on the same substrate as the display electrode pair, wherein the address electrode is disposed between the display electrode pair. Address electrode. And performing reset discharge for equalizing the potential of the electrode surface between the display electrode and the.

(31) A first substrate having a plurality of display electrodes constituted by pairs of electrodes substantially parallel to each other, and a plurality of first address electrodes arranged substantially parallel to the display electrodes; A second substrate having a plurality of second address electrodes that are arranged to face the display electrode and intersect with the display electrode and the first address electrode, and are substantially parallel to each other. The first substrate and the second substrate A method for driving a display discharge tube in which a discharge region is formed by sealing a gas between the substrate and a substrate, comprising a dielectric layer covering the display electrode, wherein the display electrode is formed of an electrode pair; An address electrode pair, and at least one address electrode covered with a dielectric layer on the same substrate as the display electrode pair, wherein the address electrode is disposed between the display electrode pair. Address electrode. Characterized in that adding a trigger signal to.

According to the present invention having the above-described configurations, since the distance between the discharge electrode tubes can be increased, the luminous efficiency can be improved, the luminance can be greatly increased, and a high-definition, high-quality image display can be achieved. Can be obtained.

[0054]

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

(Embodiment 1 of Display Discharge Tube) FIG. 1 is an exploded perspective view for explaining a schematic structure of a first embodiment of a display discharge tube according to the present invention, and FIG. 2 is a display discharge tube shown in FIG. It is sectional drawing explaining the schematic structure of.

In FIG. 2, in order to facilitate understanding of the structure, the first substrate is 90 ° with respect to the second substrate.
It is rotated and displayed.

This display discharge tube is used as a first substrate.
For example, using a transparent glass substrate, the front glass substrate 1
And Further, as the second substrate, for example, a transparent glass substrate is used, which is referred to as a back glass substrate 2.

The periphery of the front glass substrate 1 and the rear glass substrate 2 is sealed with frit glass, and the following structure is housed in a sealed tube, and the tube is evacuated. Helium (He), neon (
A discharge gas (gas) such as Ne), argon (Ar), xenon (Xe), or a mixture thereof is sealed therein.

As a structure housed in the tube, a second address electrode 7 (anode) is formed on the back glass substrate 2 by a thin film process or a thick film process such as printing. A (striped) partition wall 3 is formed by screen printing, sand blasting, or the like so as to surround the (anode). On the address electrodes 7 (anodes), the phosphors 10 of the three primary colors of RGB are also formed on the wall surfaces of the stripe-shaped partition walls 3 by a method such as printing.

FIG. 3 is a sectional view similar to FIG. 2 illustrating a schematic structure of a modification of the first embodiment of the display discharge tube according to the present invention.

As shown in FIG. 3, after forming the white dielectric layer 8b on the address electrode 7 (anode) by printing or the like, the stripe-shaped partition wall 3 and the phosphor 10 may be formed.
Other configurations are the same as those of the first embodiment shown in FIG.

On the other hand, in FIGS. 2 and 3, a display electrode 5 composed of a pair of electrodes 5M1 and 5M2 is formed on the front glass substrate 1 by a thin film process or a thick film process such as printing. The electrode pair 5M1, 5M of the display electrode 5
A first address electrode 6 (cathode) is formed between the two by a thin film process or a thick film process such as printing.

On the electrode pair 5M1, 5M2 of the display electrode 5 and the first address electrode 6 (cathode), a dielectric layer 8
a and the protective film 9 are formed.

The dielectric layer 8a is an insulator made of transparent glass or the like, is formed by printing or the like, and the protective film 9 is an oxide such as MgO having a high secondary electron emissivity, and is formed by vapor deposition or the like. .

A discharge region 1 defined by a partition 4 on the front glass substrate 1 side and a partition 3 on the rear glass substrate 2 is formed.
In one display pixel (hereinafter, also simply referred to as a pixel), two electrode pairs 5M1 and 5M2 of the display electrode 5, a second address electrode 7 (anode), and a first address electrode 6 (cathode) are arranged. You.

By separating the address electrode and the display electrode, the display electrode can commonly use the electrode 5M1 and the electrode 5M2 which form an electrode pair in the adjacent discharge region. For example, by forming the partition wall 4 on 5M1 and 5M2, a discharge space (discharge area)
Can be separated. In order to separate the discharge region, the distance D (mm) and the electrode width W (mm) between the electrode pair 5M1 and 5M2 of the display electrode 5 and the front glass substrate
And the length L (m) of the discharge space in the vertical direction of the back glass substrate 2
m) and the pressure P (tor) at 25 ° C. of the enclosed gas.
r). That is, these dimensions D (mm), W (mm), L (mm), P (t
orr) is experimentally determined as follows: K = (√ (D) / (W / 2 + D)) / (1000 × √)
It was found that the design should be made so as to satisfy 0.5 ≦ K ≦ 2 when (L) / P).

According to experiments, when K is smaller than 0.5, crosstalk occurs, and when K is larger than 2, it is not realistic.

Between the distance D between the electrodes to be discharged and the distance (W / 2 + D) to the electrodes not to be discharged, the above-mentioned distance between the gas pressure P and the vertical length L of the discharge space is obtained. What is necessary is just to design so that a relationship may hold. The gas pressure P affects the thickness of the negative glow, and the length L of the discharge space limits the spread of the electric field to control the spread of the discharge.

Such a display discharge tube is manufactured as follows.

FIG. 4 is a process chart for explaining the outline of the manufacturing process of the display discharge tube according to the present invention.

First, on the front glass substrate 1, the electrode pairs 5M1 and 5M2 of the display electrodes 5 and the transparent electrodes 5b as the first address electrodes 6 are formed by patterning an ITO film, for example, at the center on the electrode pairs 5M1 and 5M2. A Cr—Cu—Cr film is formed as a mother electrode 5a by a thin film process.
The reason for using a transparent electrode here is to increase the electrode area,
In addition, the transmittance is improved to achieve higher luminance.

In order to simplify the manufacturing process or to manufacture an ultrahigh-efficiency display discharge tube, only the mother electrode may be used without forming a transparent electrode. Further, the material of the mother electrode 5a is only required to have a small electric resistance, and there is no problem even if a metal such as Ni or a multilayer winding such as Cr-Au-Cr is used.

After forming the above electrodes, a dielectric layer 8a made of transparent glass or the like is formed on the entire surface so as to cover the electrodes.
Further, on the electrode pair 5M1 and 5M2 constituting the display electrode 5, the lattice-shaped partition wall 4 is formed so that two sides of the four sides overlap, and an MgO film is formed thereon as a protective film 9. . The lattice-shaped partition walls 4 are made of black glass or the like. When laminating by printing, it is preferable that the first layer or the upper layer is black and the lower layer is white glass similar in material. The reason why black glass is used for the partition wall 4 is to improve the contrast of a displayed image, and the reason why white is used in the lower portion and thereafter is to improve luminance. However, the whole is black glass,
Alternatively, the whole may be white glass. Next, a second address electrode 7 is formed on the rear glass substrate 2 by printing or a thin film process, and thereafter, a white dielectric 8b is formed on the entire surface by printing or the like. It should be noted that there is no significant difference in basic functions even if the white dielectric is not formed as shown in FIG.

Then, the stripe-shaped partition walls 3 are formed so as to surround the second address electrodes 7 by printing or sandblasting. After that, the phosphors 10 of each color of RGB are formed on the second address electrode 7 between the stripe-shaped partitions by printing or the like.

The second address electrode 7 is preferably made of a metal such as Ag, Ni or Au, or a multilayer film such as Cr-Cu-Cr or Cr-Au-Cr. Also, the white dielectric 8
b, The second stripe-shaped partition 3 is formed of an insulating material such as white glass. The reason why the white insulating material is used is to efficiently reflect the light emitted from the phosphor 10 toward the front glass substrate.

Thereafter, the front glass substrate 1 and the rear glass substrate 2 are sealed with frit glass or the like, and after the evacuation process, the above-mentioned gas is sealed. The manufacturing process of the display discharge tube having the structure of the present invention is basically the same as that of the conventional AC discharge tube.

In the display discharge tube according to the present invention, the electrode pairs 5M1 and 5M2 constituting the display electrode 5 may be basically bundled outside the discharge tube or inside the discharge tube (in the panel). There is no big difference in the functions. Even if only one of the electrode pairs 5M1 of the display electrode 5 is bound to a plurality or the electrodes 5M1 and 5M2 are bundled by the electric capacitance, there is no significant difference in the basic function.

Hereinafter, embodiments of the display discharge tube according to the present invention will be described with specific numbers.

Front glass substrate 1 and rear glass substrate 2
Is 2.0 mm thick soda glass, and the display pixel pitch is 0.33 mm × 1.0 mm. The thickness of the glass substrate basically has vacuum strength, and is not particularly limited as long as there is no problem in handling. Further, if a high strain point glass is used as a glass material, it is even better than soda glass.

On the front glass substrate 1, a display electrode 5 is formed by patterning an ITO film, which is a transparent electrode having a width of 0.6 mm, on which a mother electrode Cr-Cu-C for lowering resistance is formed.
r is formed by a thin film process with an electrode width of 0.08 mm.

The first address electrode 6 is formed of an ITO film which is also a transparent electrode and has an electrode width of 0.3 mm.
Then, an electrode pair 5M1, 5M2 constituting the display electrode 5
Cr-Cu-Cr as a mother electrode has an electrode width of 0.05
mm.

The display electrode 5 has a transparent electrode 5b and a mother electrode 5a.
The electrode area can be increased without lowering the light transmittance.

The electrode width of the electrode pair 5M1 and 5M2 of the display electrode 5 is as follows when the discharge cell (discharge area) pitch is 1.0 mm.
It is approximately 0.05-0.8 mm, and the electrode pairs 5M1 and 5M
The width of the transparent electrode constituting No. 2 is 0.3 to 0.8 mm. The width of the electrode pair 5M1 and 5M2 of the display electrode is 0.8 m.
If it is more than m, the electrode width of the first address electrode 6 formed on the same substrate cannot be sufficiently secured, and it takes time for address discharge, which is not practical.

When the width of the transparent electrodes 5b constituting the electrode pairs 5M1 and 5M2 is 0.3 mm or less, a mother electrode for lowering the electric resistance of the transparent electrodes is required, so that it is not significant.

Electrode pair 5M1,5 constituting display electrode 5
The width of the mother electrode 5a formed on M2 is approximately 0.05 to 0.5.
3 mm. When the width of the mother electrode 5a is 0.3 mm or more, the transmittance of the discharge cells becomes poor, and the luminance decreases. If the width of the mother electrode 5a is 0.05 mm or less, the electric resistance of the display electrode 5 (transparent electrode) does not decrease, and it is difficult to drive.
Although not shown, if a transparent electrode and a base electrode similar to the electrode pair 5M1 and 5M2 of the display electrode 5 are used as the first address electrode 6, the electrode area can be increased without lowering the transmittance of the discharge cell. .

At this time, the electrode width of the first address electrode is approximately 0.03 to 0.4 when the discharge cell pitch is 1.0 mm.
mm. The electrode width of the first address electrode 6 is 0.03 m
If it is less than m, the electrode area becomes small, so that the voltage for address discharge becomes high, or a long time is required for reliable discharge. If the electrode width of the first address electrode 6 is 0.4 mm or more, the electrode width of the display electrode 5 becomes narrow, and it is difficult to increase the brightness, which is not preferable.

At this time, the electrode width of the mother electrode formed on the transparent electrode of the first address electrode is approximately from 0.03 to 0.3.
1 mm. When the electrode width of the mother electrode is 0.1 mm or more, the transmittance of the discharge cell is deteriorated, and the luminance is undesirably reduced. When the width of the mother electrode is 0.03 mm or less, the electric resistance of the first address electrode does not decrease and driving is difficult.

After the electrodes are formed, a transparent dielectric layer 8a is uniformly formed on these electrodes over the entire surface, and the mother electrode 5a formed on the transparent electrode 5b of the electrode pair 5M1 and 5M2 of the display electrode 5 is formed.
When the filling gas pressure is 400 torr, the lattice-shaped partition wall 4 is formed to have a height of about 0.03 mm so that two sides of the four sides overlap with each other. The partition walls may not have a lattice shape, but are preferably in a substantially lattice shape in order to prevent optical crosstalk of light emission of adjacent discharge cells. Also, the partition 4
Is formed on the transparent electrode 5b of the display electrode, there is no problem in the image display function, but the transmittance is higher when formed on the mother electrode 5a, and the displayed image is not formed. It becomes bright.

The height of the partition 4 is related to the height of the negative glow. For example, the filling gas is He-5% Xe, 400 torr.
In the case of r, crosstalk occurred when the height of the partition wall was 0.01 mm. On the other hand, if the height of the partition wall 4 is 0.1 mm or more, the viewing angle at which the image quality of the displayed image does not deteriorate is narrowed, which is not preferable. When the substantially grid-like partition is formed by a printing method or the like, it is preferable that the first layer or the upper layer is printed with black and the lower layer is printed with white partition.

The stripe-shaped barrier ribs 3 formed on the rear glass substrate 2 and the substantially lattice-shaped barrier ribs 4 formed on the front glass substrate 1 are arranged so as to overlap two sides.

After forming the grid-like partition walls 4, an MgO film is formed as the protective film 9 to a thickness of 500 to 800 nm by a known method such as electron beam evaporation (EB evaporation).

Here, the electrode pair 5 of the display electrode 5 is used.
Although an example in which transparent electrodes are used for M1, 5M2 and the first address electrode 6 has been described, the electrode pair 5M of the display electrode 5 is used.
A transparent electrode may not be used for each of the 1,5M2 and the first address electrodes. In particular, the electrode pair 5M of the display electrode 5
In a pattern composed of only a mother electrode without using a transparent electrode for 1,5M2, for example, the electrode width is set to 0.2 to 0.4 m.
When formed with m, the discharge sustaining voltage increases, but the luminous efficiency can be increased.

In the above description, the ITO film is used as the transparent electrode. However, it is needless to say that a Nesa film or the like can be used since there is no problem if the electrode area can be secured without lowering the transmittance.

On the rear glass substrate 2, a second address electrode 7 is formed by a printing method or a photo process using Ag, Ni or the like with an electrode width of 0.10 mm. On this electrode, a white dielectric layer 8b is uniformly formed with a thickness of 0.015 mm.

The electrode width of the second address electrode 7 is approximately 0.05 to 0.2 when the discharge cell pitch is 0.33 mm.
mm. If the electrode width becomes narrow, the discharge starting voltage becomes high or time is required.
Below, address discharge is difficult. The white dielectric 8b has no significant difference in basic function whether or not it is formed. The formation of the white dielectric 8b improves the utilization of the reflected light from the phosphor 10, and also serves as a protective film for the second address electrode 7 when the stripe-shaped partition 3 is formed using sandblasting.

The width of the stripe-shaped partition 3 is 0.06 mm,
The height is 0.15 mm. The width of the striped partition walls 3 is approximately 0.02 to 0.1 mm, and the height is 0.05 to 0.1 mm.
20 mm, and formed by printing or sandblasting.

If the width of the stripe-shaped partition walls 3 is 0.1 mm or more, the aperture ratio becomes poor, and sufficient brightness and discharge space cannot be secured. The smaller the width of the stripe-shaped partition wall 3 is, the better it is. However, if the width is 0.02 mm or less, a partition wall having a sufficient height cannot be formed.

If the height of the stripe partition walls 3 is less than 0.05 mm, a sufficient amount of phosphor cannot be applied.
If the height of the stripe-shaped partition walls 3 is 0.2 mm or more, it becomes difficult to form the partition walls.

The phosphor 10 is formed on the rear glass substrate 2 by applying a paste-like phosphor by printing or the like to correspond to each of the RGB colors.

In this manner, the front glass substrate 1 and the rear glass substrate 2 are manufactured. The thus obtained front glass substrate 1, rear glass substrate 2, and exhaust pipe (not shown) are sealed with frit glass, then evacuated, filled with a sealing gas, and chip-off. The sealing gas is an ionizable gas such as He-Xe, Ne-Xe, etc., and approximately 400 t at 25 ° C.
It is sealed at a pressure of about orr.

It should be noted that there is no significant difference in the basic function of the present invention between the types of gas to be sealed.

In the above description, the partition formed on the back glass substrate 2 has been described as the stripe-shaped partition 3. However, the partition on the lattice may be formed on the back glass substrate 2. In this case, the lower layer of the lattice-shaped partition walls 3 uses a white glass material, and the uppermost layer uses a black glass material.

In this case, the phosphors 10 are formed macroscopically in stripes inside the lattice partition. A transparent dielectric layer 8a is formed on the front glass substrate 1 and a lattice-shaped partition is not formed on the front glass substrate 1, but of course, there is no problem in forming. Then, as a protective film, Mg
After forming the O film 9, it is sealed with the rear glass substrate 2.
(Embodiment 2 of Display Discharge Tube) FIG. 5 is a schematic cross-sectional view for explaining the configuration of a second embodiment of the display discharge tube according to the present invention. I do.

In the present embodiment, for example, only 5M1 of the electrode pair 5M1 and 5M2 constituting the display electrode 5 is used as an electrode of two discharge spaces (discharge areas) by the partition 4.
The other electrode 5M2 of the electrode pair is formed at a position symmetrical with respect to the partition 4, and serves as a display electrode in an adjacent discharge region.
Other configurations are the same as those of the first embodiment.

(Embodiment 3 of Display Discharge Tube) FIG. 6 is a schematic sectional view for explaining the structure of a third embodiment of the display discharge tube according to the present invention. Corresponding to the part.

In this embodiment, the electrode pair 5M1 of the display electrode 5 is used.
And 5M2 are structures formed at symmetric positions with respect to the partition wall 4, respectively. That is, one electrode 5M1 of the electrode pair
(Indicated by 5M1-1 in the figure) and the other electrode 5M2 (5M1-1 in the figure).
M2-2) are arranged so as to constitute a display electrode in one discharge region, and the electrodes 5M1-1 and 5M2-2 are arranged.
The first address electrode 6 is arranged between the first address electrodes. Other configurations are the same as those of the first embodiment.

According to the present embodiment, the address electrode pair and the display common electrode pair are provided, so that the distance between the display electrode pairs can be increased.

In this embodiment, 5M2 (5M1), which performs a main discharge with the electrode 5M1 (5M1-1) even without the partition wall 4, is provided.
2-2) The relationship between the distance D1 to the other electrode 5M2 and the distance D2 to the other electrode 5M, the pressure P (Torr) of the sealed gas at 25 ° C., the front glass substrate 1 and the rear glass substrate 2
May be designed to satisfy the length L (mm) of the discharge space in the vertical direction. That is, K = (√ (D1) / D2) / (1000 × √ (L) /
P), it is sufficient that the relationship of 0.5 ≦ K ≦ 2 is satisfied. According to experiments, if the value of K is smaller than 0.5, crosstalk occurs, and if it is larger than 2, it is not realistic.

The gas pressure P controls the thickness of the negative glow, and the length L of the discharge space limits the spread of the electric field to control the spread of the discharge.

(Embodiment 4 of Display Discharge Tube) FIG. 7 is a schematic sectional view for explaining the structure of a fourth embodiment of a discharge display tube according to the present invention.

In this embodiment, the display electrodes 5M1 and 5M2
Are formed so as to be located on both sides of the partition wall 4, respectively, and the first address electrode 6 is the same as that of the first embodiment except that the first address electrode 6 is not located between the display electrode pairs 5M1 and 5M2 but on the partition wall 4 side. .

According to the present embodiment, the address electrode pair and the display common electrode pair are provided as in the first embodiment, so that the distance between the display electrode pair is smaller than that of the conventional AC type display discharge tube. Can be released.

(Embodiment 5 of Display Discharge Tube) FIG. 8 is a schematic sectional view for explaining the structure of a discharge display tube according to a fifth embodiment of the present invention. FIG. 8 shows the first substrate rotated by 90 ° with respect to the second substrate for easy understanding of the structure.

In this embodiment, the electrode pairs 5M1 and 5M2 constituting the display electrode 5 are located in the same discharge space on the front glass substrate 1, and the first address electrode 6 and the second address electrode 7 are It is formed on the substrate 2 side.

That is, the first glass substrate 2
An address electrode 6 is formed, on which a second address electrode 7 is formed via a dielectric layer 8b.

According to the present embodiment, the formation position of the address electrode is the same as that of the first embodiment. However, since it has a pair of address electrodes and a pair of display electrodes, it can be used in a conventional AC type display discharge tube. In comparison, the distance between the display electrode pairs can be increased.

(Embodiment 6 of Display Discharge Tube) FIG. 9 is a schematic sectional view for explaining the structure of a discharge display tube according to a sixth embodiment of the present invention. Note that FIG. 9 shows the first substrate rotated by 90 ° with respect to the second substrate for easy understanding of the structure.

In this embodiment, the display electrode 5 is a single electrode formed on the front glass substrate 1 and functions as a common display electrode in the discharge space adjacent to the partition 4.

The first address electrodes 6 are formed on the front glass substrate 1 side, and the second address electrodes 7 are formed on the rear glass substrate 2 side.

In this configuration, a main discharge for display is performed between the display electrode 5 and the first address electrode 6, and the display electrode 5 is shared by the partition walls 4 in two discharge spaces. The drive and the like may be the same as those of the conventional AC PDP.

According to this configuration, as in the above-described embodiments, the luminous efficiency is improved, the luminance can be greatly increased, and a high-definition, high-quality image display can be obtained. (Embodiment 7 of Display Discharge Tube) FIG. 10 is a schematic sectional view for explaining the structure of a discharge display tube according to a seventh embodiment of the present invention.

In this embodiment, the display electrode 5 is a single electrode formed on the front glass substrate 1, and differs from the sixth embodiment only in that there is no partition for partitioning the display electrode 5. It is.

That is, a main discharge for display is performed between the display electrode 5 and the first address electrode 6, and the display electrode 5 is shared by the two discharge spaces. The drive etc. are conventional AC type PD
It may be the same as P.

In this configuration, a main discharge for display is performed between the display electrode 5 and the first address electrode 6, and the common display electrode 5 is filled with the pressure P (Torr) of the gas to be sealed and the front glass substrate. 1 and the length of discharge L (mm) in the vertical direction of the rear glass substrate 2. That is, the distance D (m) to the first address electrode 6 where the main discharge is performed together with the display electrode 5 is performed.
m), width W (mm) of display electrode 5, front glass substrate 1
And the length L (m) of the discharge space in the vertical direction of the back glass substrate 2
m), and the pressure P (T
orr) is experimentally determined as K = ({(D1) / (W / 2 + D)) / (1000 × １０００)
When (L) / P), the design may be made to satisfy 0.5 ≦ K ≦ 2. According to experiments, when K is smaller than 0.5, crosstalk occurs, and when K is larger than 2, it is not realistic.

Between the distance D between the electrodes to be discharged and the distance (W / 2 + D) to the electrodes not to be discharged, the above relationship is established between the gas pressure and the vertical length L of the discharge space. Holds. The gas pressure P affects the thickness of the negative glow, and the length L of the discharge space limits the spread of the electric field to control the spread of the discharge. The drive and the like are the same as the conventional AC type P
Same as DP.

According to this configuration, the luminous efficiency is improved, the luminance can be greatly increased, and a high-definition and high-quality image display can be obtained, similarly to the above-described embodiments. (Eighth Embodiment of Display Discharge Tube) FIG. 11 is a schematic sectional view for explaining the structure of an eighth embodiment of a discharge display tube according to the present invention. FIG. 11 shows the first structure for easy understanding of the structure.
Is rotated by 90 ° with respect to the second substrate.

In this embodiment, the display electrode 5 is composed of the electrode 5M1 and the electrode 5M2, which form an electrode pair, and the main discharge for display is performed by the electrode 5M1 of the electrode pair and the first address electrode 6 (the adjacent pixel ( In the discharge space), the electrode 5M2 of the electrode pair and the first
This is performed between the address electrodes 6), and the electrode pairs 5M1 and 5M2 are arranged symmetrically with respect to the boundary of the discharge space (the position of the partition wall 3). Other configurations are the same as in the sixth embodiment.

In this embodiment, the electrodes 5M1 and 5M2
Although there is no partition between them, a partition similar to that of the sixth embodiment may be provided.

According to this structure, the luminous efficiency is improved, the luminance can be greatly increased, and a high-definition and high-quality image display can be obtained, similarly to the above-described embodiments. Hereinafter, an embodiment of a method for driving a display discharge tube according to the present invention will be described. In the following drive waveform diagrams, the electrodes 5M1 forming the electrode pair of the display
1) 5M2 is described as 5-M2.

(Embodiment 1 of Driving Method) FIG. 12 is a simplified sectional view of a discharge display tube for explaining the driving of the discharge display tube described in the first embodiment of the present invention, and FIG. 13 is a display according to the present invention. FIG. 4 is a drive waveform diagram for explaining a first embodiment of a method for driving a discharge tube for use. In FIG. 12, the first substrate is rotated by 90 ° with respect to the second substrate for easy understanding of the structure. Hereinafter, a first embodiment of the driving method of the display discharge tube will be described with reference to FIGS.

First, in order to make all the discharge cells on the screen of the display discharge tube uniform, that is, the electric charges on the electrodes 5M1 and 5M2 and the first address electrode 6 constituting the electrode pair of the display electrode 5 are set. Is discharged between the electrodes 5M1 and 5M2 to erase the wall charges on the surface of the dielectric layer 8a.

That is, the pulse of Pwsa is applied to the electrode 5M1 and the pulse of Pwsk is applied to 5M2 during the reset period of FIG. Since this pulse is intended to prevent wall charges from being applied, it is a narrow pulse.

In general, in a so-called AC display discharge tube, wall charges are not generated if the pulse width is short during discharge, and wall charges are generated if the pulse width is wide.

In this embodiment, the pulse width of Pwsa and Pwsk is 1 μs, the voltage of Pwsa is +40 V,
Pwsk is -240V.

After this discharge (that is, after the entire reset), the waveform during the address period of FIG. 13 is changed to the first address electrodes 6 (6-1, 6-2,... 6-n) and the first address electrodes 7 (7-n), electrodes 5M1 and 5M2 of display common electrode
Is applied.

In a discharge cell to be addressed, a negative pulse Pc is applied to the first address electrode 6 and a positive pulse Pa is applied to the second address electrode 7 with a potential difference that causes a discharge. At this time, a voltage + Vm higher than the potential of the discharge space generated by the address discharge is applied to one side of the electrode of the display common electrode 5, for example, 5M1, within a range where the first address electrode 6 on the low voltage side does not cause a discharge. The other electrode 5M2 has a voltage -Vm lower than the potential of the discharge space generated by the address discharge within a range in which no discharge occurs with the second address electrode 7 on the high voltage side.
Is applied.

The pulses applied to these address electrodes are pulses (Pc, Pa) having a short pulse width such that no wall charges are generated on the address electrodes, causing an address discharge, and the space charges after the address discharge are reduced. Wall charges having opposite characteristics are accumulated in the electrodes 5M1 and 5M2 of the display electrode 5, respectively.

Note that the pulse width of the pulse Pc and the pulse Pa is 1 μs, the voltage of the pulse Pc is −140 V, the pulse Pa is +40 V, + Vm is +30 V, and −Vm is −30 V.

In the sustain period, the sustaining pulse Ps is applied to the electrodes 5M1 and 5M2 constituting the display electrodes during the sustain period of FIG.
That is, a cell having a wall charge in the display common electrode is discharged,
A cell in which no address discharge has occurred, that is, a cell having no wall charge in the display common electrode does not discharge.

Here, Ps has a pulse width of 4 μs and a voltage of −
At 240 V, wall discharge is formed by the discharge in the cell where the discharge has occurred.

As described above, discharge sustain during the sustain period can be controlled according to the presence or absence of the address discharge (image information).

(Embodiment 2 of Driving Method) FIG. 14 is a driving waveform diagram for explaining a second embodiment of the driving method of the display discharge tube according to the present invention.

In the present embodiment, first, in order to make all the discharge cells on the screen of the display discharge tube uniform,
In order to initialize the charges on the electrodes 5M1 and 5M2 and the first address electrode 6 of the electrode pair constituting the display electrode 5, a discharge for accumulating wall charges is performed between the electrodes 5M1 and 5M2.

During the reset period in FIG. 14, P is applied to the electrode 5M1.
The pulse of wwa is performed by applying a pulse of Pwwk to 5M2. Since the purpose of this pulse is to add wall charges, the pulse width is long enough to accumulate wall charges.

Note that the pulse width of Pwwa and Pwwk is 4
μs, the voltage of Pwwa is +40 V, and the voltage of Pwwk is −240 V.

After this discharge (after the entire wall charge accumulation), FIG.
4 during the address period, the first address electrode 6, the second
The voltage is applied to the address electrode 7 and the display electrodes 5M1 and 5M2. In a discharge cell that does not want to be addressed, a negative pulse Pc is applied to the first address electrode 6 and a positive pulse Pa is applied to the second address electrode 7 with a potential difference that causes a discharge.

The pulse applied to the address electrode is a pulse having a narrow pulse width such that no wall charge is generated on the address electrode to cause an address discharge, and the space charge after the address discharge is applied to the display electrodes 5M1 and 5M2. Eliminate wall charges. The pulse width of the pulse Pc and the pulse Pa is 1 μm.
s, the voltage of the pulse Pc is -140 V, the pulse Pa is
Is + 40V.

In the sustain period, the display electrode 5M
1 and 5M2, the sustaining pulse Ps was applied, and the address discharge did not occur. That is, the cell having the wall charge on the display electrode was discharged, and the address discharge occurred, that is, the wall charge was on the display common electrode. A cell without a mark does not discharge.

The pulse width of Ps is 4 μs, and the voltage is −
The voltage is 240 V, and in the cell where the discharge has occurred, wall charges are formed by the discharge.

As described above, the sustaining of the discharge during the sustain period can be controlled according to the presence or absence of the address discharge (that is, the image information).

(Third Embodiment of Driving Method) FIGS. 15 and 16 are driving waveform diagrams for explaining a third embodiment of the driving method of the display discharge tube according to the present invention.

In the present embodiment, first, in order to make all the discharge cells on the screen of the discharge tube uniform, that is, the charges on the display electrodes 5M1, 5M2 and the first address electrode 6 are initialized. Display electrodes 5M1, 5M2
A discharge for erasing wall charges is performed between the first address electrode 6 and the first address electrode 6.

The reset discharge during the reset period shown in FIGS. 15 and 16 is not performed between the display common electrodes M1 and M2, but the first address electrode 6 and the electrode 5M1 (FIG. 16) or the first address electrode 6 and the electrode. Perform between 5M1 and 5M2.

Since these pulses (Pwsa, Pwsk) are intended to prevent generation of wall charges,
The pulse has a short pulse width. In this embodiment, P
wsa and Pwsk have a pulse width of 1 μm and a voltage of Psa
wsa is + 40V and Pwsk is -240V.

In the reset discharge, the display electrodes 5M1, 5M
The same applies to the case where M2 is set to the same phase and the first address electrode 6 is reset and the reset discharge is performed individually, that is, when the electrode 5M1 and the first address electrode 6 are discharged and the electrode 5M2 and the first address electrode 6 are discharged.

The address period and the sustain period are the same as those in the first embodiment of the driving method.

(Embodiment 4 of Driving Method) FIG. 17 is a driving waveform diagram for explaining a fourth embodiment of the driving method of the display discharge tube according to the present invention.

First, a discharge is caused between the electrode 5M1 and the first address electrode 6 by a reset discharge during the reset period. The pulses (Pwwa, Pwwk) at this time have such a pulse width that wall charges are accumulated, and the pulse width is 4 μs.
The voltage of wwa is + 40V, the voltage of Pwwk is -240V
It is.

The address period and the sustain period are the same as those in the first embodiment of the driving method.

In the driving method of the present embodiment and the driving method of the third embodiment, the luminance caused by the discharge between the display electrodes 5M1 and 5M2 and the discharge between the first address electrode 6 and both the display electrodes 5M1 and 5M2. This is a driving method utilizing the difference between the two.

The display pixel pitch is 0.33 mm × 1.03
mm, the electrode width of the electrode 5M1 and the electrode 5M2 is 0.6 m
m, when the width of the first address electrode 6 is 0.2 mm, assuming that the brightness caused by the discharge between the electrodes 5M1 and 5M2 of the electrode pair constituting the display electrode 5 is 1, the first address electrode 6 and the electrode 5M1 The brightness due to the discharge between 5M2 is about 0.6.

(Embodiment 5 of Driving Method) FIGS. 18 and 19 are driving waveform diagrams for explaining a fifth embodiment of the driving method of the display discharge tube according to the present invention.

First, in order to make all the discharge cells on the screen of the display discharge tube uniform, that is, the electric charges on the first address electrode 6 and the electrodes 5M1 and 5M2 which constitute the display electrode pair. Display electrode 5 to bring the
A discharge for accumulating wall charges is performed between M1 and 5M2 and the first address electrode 6.

Pulses (Pwwa, Pwwk) as shown in FIG. 18 and FIG. 19 are applied to the electrodes 5M1, 5M2 and the first address electrode 6 as shown in the reset period. Since this pulse is intended to generate wall charges, the pulse width is a pulse (4 μs) long enough to accumulate wall charges, and the voltage of Pwwa is +
The voltage of 40V, Pwwk is -240V.

The reset discharge is caused by the first address electrode 6
And one of the display electrodes 5M1 and 5M2. That is, it is only necessary that wall charges are generated on the first address electrode 6.

After this discharge (after accumulation of the entire wall charge), FIG.
8, the first address electrode 6, the second address electrode 7, and the display electrode pair 5M1
And 5M2.

In a discharge cell that does not want to be addressed, a negative pulse Pc is applied to the first address electrode 6 with a potential difference that causes discharge.
And a positive pulse Pa is applied to the second address electrode 7. The pulse width of Pc and Pa is 1 μm, and the voltage is −140 V for Pc and +40 V for Pa.

The pulse applied to the address electrode is a pulse having a short pulse width such that no wall charge is generated on the address electrode, causing an address discharge, and the space charge after the address discharge displacing the wall charge on the first address electrode 6. Let it be erased.

The first discharge in the sustain period causes a discharge between the first address electrode 6 and the display electrode 5M1, and shifts the discharge to another electrode 5M2.

At the beginning of the sustain period in FIGS. 18 and 19, the pulse P is applied to the electrodes 5M1 and 5M2 of the display electrode pair and the first address electrode 6 to either the electrode 5M1 or the electrode 5M2.
s and a pulse Pt is applied to the first address electrode 6. The pulse Pt has a pulse width of 1 μs to the extent that wall charges cannot be generated, and the pulse width of the pulse Ps has a pulse width of 4 μs to accumulate wall charges. The voltage of Pt is -200V,
The voltage of Ps is -240V.

In the cell where the address discharge did not occur, that is, the cell in which the first address electrode 6 has wall charges, a trigger discharge first occurs between the first address electrode 6 and the electrode 5M1 in the drawing, and then the electrode 5M1 and the electrode 5M1 The discharge shifts between 5M2.

Note that the pulse width of the pulse Ps is wide, and in the cell where the discharge has occurred, the wall charges are generated by the discharge due to the discharge.
The discharge is formed on M1 and 5M2, respectively, and the discharge continues as wall charges of the next discharge.

In this embodiment, the method of accumulating wall charges at the time of reset discharge and erasing wall charges at unnecessary portions has been described. However, all wall charges are erased at the time of reset discharge and the first address is erased. It is also possible to drive by accumulating wall charges on the surface of the first address electrode 6 by an address discharge between the electrode 6 and the second address electrode 7.

(Embodiment 6 of Driving Method) FIGS. 20 and 21 are driving waveform diagrams for explaining a sixth embodiment of the driving method of the display discharge tube according to the present invention.

First, in order to make all the discharge cells on the screen of the display discharge tube uniform, that is, the electrodes 5M1 and 5M2 and the first address electrode 6 which constitute the display electrode pair.
In order to set the upper charges to an initial state, a discharge for accumulating wall charges is performed between the electrode 5M1 and the first address electrode 6. Pulses (Pwwa, Pwwk) as shown are applied to the electrodes 5M1, 5M during the reset period in FIGS.
The voltage is applied to the M2 and the first address electrode 6 as illustrated. Since this pulse is intended to generate wall charges, the pulse width is a pulse (4 μs) long enough to accumulate wall charges. The voltage of Pwwa is +4.
The voltage of 0V and Pwwk is -240V.

The reset discharge is caused by the first address electrode 6
And one of the display electrodes 5M1 and 52 may be used. That is, it is only necessary that wall charges are generated in the first address electrode 6.

After this discharge (after the entire wall charge accumulation), FIG.
0, the waveforms during the address period in FIG. 21 are represented by the first address electrode 6, the second address electrode 7, and the display electrodes 5M1 and 5M2.
Is applied.

In a discharge cell which is not desired to be addressed, a negative pulse Pc is applied to the first address electrode 6 with a potential difference causing discharge.
And a positive pulse Pa is applied to the second address electrode 7.

As a pulse applied to the address electrode, a pulse (1 μs) having a short pulse width such that no wall charge is generated on the address electrode is applied to cause an address discharge, and the space charge after the address discharge is applied to the first address electrode 6. To eliminate the wall charges.

The discharge during the sustain period causes a discharge to occur with the first address electrode 6 and an electrode constituting a display electrode pair, for example, 5M1, and the discharge is transferred to another electrode 5M2.

The pulse (Pt) to the first address electrode 6 functions as a trigger pulse that triggers a main discharge as a narrow pulse (1 μs).

The electrodes 5M1 and 5M constituting the display electrode pair
A pulse P is applied to the electrode 5M1 and the electrode 5M2 during the sustain period of FIGS.
Alternately, a pulse of -Pt is applied to the first address electrode 6 first, and a pulse of + Pt is applied thereafter. The voltage is -200 V for -Pt, +200 V for + Pt, and -200 V for Ps.
240V.

Although the pulse to the first address electrode 6 is shown as a negative pulse at first and a positive pulse thereafter, this is as positive as possible (+) in order to protect the surface of the first address electrode 6. The trigger discharge pulse may be a pulse of positive, negative or bipolar polarity, and is effective from the relationship between the distance between the electrodes 5M1 and 5M2 and the address electrode and the distance between the electrodes 5M1 and 5M2.

A cell in which no address discharge has occurred, that is, a cell having wall charges on the first address electrode 6 is discharged,
A cell in which an address discharge has occurred, that is, a cell having no wall charge on the first address electrode 6 does not discharge.

The pulse Pt has a narrow pulse width and is 1 μs so that no wall charge is generated. The pulse Ps has a wide pulse width of 4 μs. In the cell where the discharge has occurred, the wall charge is reduced by the discharge to the display electrode 5M1. , 5M2. Note that the pulse width and voltage of each pulse in this embodiment are the same as those in Embodiment 5 of the driving method.

Further, in the present embodiment, a method has been described in which wall charges are accumulated at the time of reset discharge to erase wall charges at unnecessary locations. However, all wall charges are erased at the time of reset discharge, and the first address is erased. The wall charges may be accumulated on the surface of the first address electrode 6 by the address discharge between the electrode 6 and the second address electrode 7 and driven.

[0187]

As described above, according to the present invention,
The distance between the electrodes can be increased as compared with the conventional surface discharge AC type PDP. Further, by separating the electrodes, the luminous efficiency is increased, and the luminance can be greatly increased. Compared with the conventional surface discharge AC type PDP, the electrode area of the discharge cell can be increased, and the luminance can be greatly increased. Can be uploaded.

Furthermore, even if the discharge cells are arranged at a high-definition pitch, it is possible to suppress a decrease in efficiency and a decrease in luminance due to the miniaturization of the distance between electrodes and the electrode area as in a conventional AC-type PDP. If a thin film process can be used for display, the insulating layer formed on the display electrode pair or the address electrode can be almost completely flattened, so that the grid-like partition formed thereon can be flattened, A PDP with less crosstalk due to irregularities can be provided.

According to the driving method of the present invention,
Luminous efficiency is improved, and brightness can be greatly increased,
Crosstalk is reduced, and a high-definition, high-quality image display can be obtained.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view for explaining a schematic structure of a first 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 sectional view similar to FIG. 2, illustrating a schematic structure of a modification of the first embodiment of the display discharge tube according to the present invention.

FIG. 4 is a process diagram illustrating an outline of a manufacturing process of a display discharge tube according to the present invention.

FIG. 5 is a schematic cross-sectional view illustrating a configuration of a second embodiment during a display discharge according to the present invention.

FIG. 6 is a schematic cross-sectional view illustrating the configuration of a third embodiment during display discharge according to the present invention.

FIG. 7 is a schematic sectional view illustrating the configuration of a fourth embodiment of the discharge display tube according to the present invention.

FIG. 8 is a schematic sectional view illustrating the configuration of a fifth embodiment of the discharge display tube according to the present invention.

FIG. 9 is a schematic sectional view illustrating the configuration of a sixth embodiment of the discharge display tube according to the present invention.

FIG. 10 is a schematic sectional view illustrating the configuration of a seventh embodiment of the discharge display tube according to the present invention.

FIG. 11 is a schematic sectional view illustrating the configuration of an eighth embodiment of a discharge display tube according to the present invention.

FIG. 12 is a simplified cross-sectional view of a discharge display tube for explaining driving of the discharge display tube described in the first embodiment of the present invention.

FIG. 13 shows a first method of driving a display discharge tube according to the present invention.
FIG. 6 is a driving waveform diagram for explaining an embodiment.

FIG. 14 shows a second method of driving the display discharge tube according to the present invention.
FIG. 6 is a driving waveform diagram for explaining an embodiment.

FIG. 15 shows a second method of driving the display discharge tube according to the present invention.
FIG. 6 is a driving waveform diagram for explaining an embodiment.

FIG. 16 shows a second method of driving the display discharge tube according to the present invention.
FIG. 16 is a drive waveform diagram similar to FIG. 15 for explaining an example.

FIG. 17 shows a fourth method of driving the display discharge tube according to the present invention.
FIG. 6 is a driving waveform diagram for explaining an embodiment.

FIG. 18 shows a fifth method of driving the display discharge tube according to the present invention.
FIG. 6 is a driving waveform diagram for explaining an embodiment.

FIG. 19 shows a fifth method of driving the display discharge tube according to the present invention.
FIG. 19 is a drive waveform diagram similar to FIG. 18 for explaining the embodiment.

FIG. 20 shows a sixth method of driving the display discharge tube according to the present invention.
FIG. 6 is a driving waveform diagram for explaining an embodiment.

FIG. 21 is a sixth method for driving the display discharge tube according to the present invention.
FIG. 21 is a drive waveform diagram similar to FIG. 20, illustrating an example.

FIG. 22 is a schematic perspective view of a conventional AC PDP.

FIG. 23 is a schematic sectional view of a conventional AC PDP.

FIG. 24 is a cross-sectional view showing a hybrid type PDP according to the related art.

[Explanation of symbols]

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

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akio Yamaguchi 3300 Hayano, Mobara-shi, Chiba Pref.Electronic Devices Division, Hitachi, Ltd. (72) Inventor Akira Shintani 3681-Hayano, Mobara-shi, Chiba Pref. 72) Inventor Hiroshi Kawasaki 3681 Hayano Mobara City, Chiba Prefecture Inside Hitachi Device Engineering Co., Ltd.

Claims (31)

[Claims] A first substrate having a plurality of display electrodes formed of electrodes substantially parallel to each other, a plurality of first address electrodes arranged substantially in parallel with the display electrodes, and the first substrate; A second substrate having a plurality of second address electrodes, which are disposed to face each other, intersect the display electrode and the first address electrode, and are substantially parallel to each other.
A display discharge tube in which a discharge region is formed by sealing a gas between the display electrode and the substrate, further comprising a dielectric layer covering the display electrode, and the display electrode, the first address electrode, and The second address electrode, and wherein the display electrode is the second address electrode.
A display discharge tube which is arranged adjacently to pixels adjacent to each other in a direction in which an address electrode extends. 2. A first substrate having a plurality of display electrodes substantially parallel to each other, a plurality of first address electrodes arranged substantially parallel to the display electrodes, and a first substrate opposed to the first substrate. A second substrate having a plurality of second address electrodes crossing the display electrode and the first address electrode and being substantially parallel to each other, wherein a gas is interposed between the first substrate and the second substrate. A display discharge tube in which a discharge region is formed by enclosing the display electrode, a dielectric layer covering the display electrode, and the display electrode, a first address electrode and a second address electrode in one pixel. A display discharge tube, wherein the display electrode is commonly arranged for pixels adjacent to each other in the direction in which the second address electrode extends. 3. The display discharge tube according to claim 2, wherein a partition formed on the display electrode serves as a display electrode common to the adjacent pixels. 4. A distance D (mm) between the display electrode and the first address electrode, and a width W (mm) of the display electrode.
The relationship between the distance L (mm) of the discharge space in a direction substantially perpendicular to the first substrate plane and the second substrate plane and the pressure P (torr) of the sealed gas is represented by K = (√ (D) / (W / 2 + D)) / (1000 × √)
The display discharge tube according to claim 2, wherein 0.5 ≦ K ≦ 2 when (L) / P). 5. A display apparatus comprising: a first substrate having a plurality of display electrodes substantially parallel to each other; and a second substrate forming a discharge space together with the first substrate, wherein the first substrate intersects the display electrodes and is mutually separated. A second address electrode comprising a plurality of substantially parallel electrodes; and a first address electrode intersecting with the second address electrode and being parallel to each other, and filling a gas between the first substrate and the second substrate. A display discharge tube having a discharge region formed therein, comprising a dielectric layer covering the display electrode, wherein the display electrode is formed of an electrode pair disposed in one pixel and disposed in one pixel. A display discharge tube comprising: a first address electrode and a second address electrode forming a four-electrode structure; and at least one of the first address electrode and the second address electrode is covered with a dielectric layer. 6. An electrode pair comprising one of a pair of electrodes constituting the display electrode and a pair of electrodes constituting a display electrode arranged adjacently to a pixel adjacent in a direction in which the second address electrode extends. 6. The display discharge tube according to claim 5, wherein an electrode adjacent to one of the electrodes has the same potential. 7. An electrode pair forming display electrodes covered with a dielectric layer and arranged in parallel at a predetermined interval on one of the first substrate and the second substrate, and covered with a dielectric layer. 7. The display discharge tube according to claim 5, comprising one or both of a first address electrode and a second address electrode. 8. A display device comprising: a first address electrode on one of the substrates on which an electrode pair forming the display electrode is formed; a second address electrode on the other substrate; and the second address electrode. The discharge tube for display according to claim 7, further comprising a dielectric layer covering the first discharge tube. 9. The display discharge tube according to claim 7, wherein said second address electrode is disposed so as to be exposed to said discharge region. 10. An electrode pair constituting the display electrode and a first electrode pair.
The display discharge tube according to claim 8 or 9, further comprising a partition formed in a substantially striped shape on the other substrate disposed opposite to the one substrate on which the address electrodes are formed. 11. The display according to claim 8, wherein said first address electrode is formed between electrodes constituting an electrode pair of said display electrodes on the same substrate. For discharge tubes. 12. An electrode pair forming one of said display electrodes is adjacent to one another by a partition formed between one of said substrates on which said display electrodes are formed and another of said substrates opposed to said one of said substrates. The display discharge tube according to claim 11, wherein one of a pair of electrodes forming a display electrode of the two discharge regions is formed. 13. An electrode pair constituting the display electrode, wherein one electrode of the pair of electrodes forms one common display electrode in two adjacent discharge spaces, and the common one display electrode width W (m
m), the distance D (mm) between the common one display electrode and the other electrode constituting the display electrode adjacent thereto, the pressure P (torr) of the sealed gas, and the one substrate plane. And the distance L (mm) of the discharge space in a direction substantially perpendicular to the other substrate plane is expressed as K = (＝ (D) / (W / 2 + D)) / (1000 × √).
The display discharge tube according to claim 12, wherein 0.5 (L) / P) satisfies 0.5 ≦ K ≦ 2. 14. The display discharge tube according to claim 12, wherein said adjacent partition walls have an electrode pair forming display electrodes of said two adjacent discharge regions. 15. A relationship between a height d (μm) of a partition wall formed on the common one display electrode and a pressure P (torr) of the sealed gas is 4000 / P ≦ d ≦ 40000 /. The display discharge tube according to claim 12, wherein the discharge tube is P 2. 16. The display discharge tube according to claim 12, wherein the partition formed on the display electrode has a substantially lattice shape. 17. A substantially grid-like partition formed on the display electrode, and the other substrate has a substantially stripe-like partition, and two sides of the substantially grid-like partition and the substantially stripe-like partition are provided. 15. The display discharge tube according to claim 12, wherein the partition wall is overlapped with the partition wall. 18. A display device according to claim 18, further comprising: a grid-like partition wall provided on the other substrate, which is disposed opposite to the one substrate on which the electrode pairs forming the display electrodes and the first address electrodes are formed. Claim 8, 9, 11, 12 or 14
2. The display discharge tube according to claim 1. 19. A distance of a discharge space in a direction substantially perpendicular to the first substrate plane and the second substrate plane is 60 to 250.
15. The micrometer of claim 12, 14 or 1
9. The display discharge tube according to any one of 8. 20. A ratio of a width of the display electrode to a pitch of a display region in a direction intersecting an extending direction of the display electrode and the display electrode is 0.05: 1 to 0.8: 1. The display discharge tube according to any one of claims 12, 14 and 18, wherein: 21. The display discharge tube according to claim 20, wherein the display electrode comprises a transparent electrode and a mother electrode made of a conductor having a different electric resistance from the transparent electrode. 22. The display discharge tube according to claim 21, wherein the mother electrode of the display electrode is disposed so as to overlap a partition formed on the display electrode. 23. A ratio of the electrode width of the mother electrode of the display electrode to the pitch of the display region in a direction intersecting with the extending direction of the display electrode is 0.05: 1 to 0.3: 1. The display discharge tube according to claim 21, wherein: 24. The display device according to claim 1, wherein the display electrodes or the electrode pairs constituting the display electrodes are bundled into one or more in a display discharge tube.
The display discharge tube according to any one of 2 and 5. 25. A ratio of a width of at least one address electrode covered with the dielectric layer to a pitch of a discharge region arranged in a direction in which an electrode pair constituting the display electrode extends is 0.03. The display discharge tube according to claim 5, wherein the ratio is from 1 to 0.4: 1. 26. The method according to claim 25, wherein at least one address electrode covered with the dielectric layer comprises a transparent electrode and a mother electrode made of a conductor having a different electric resistance from the transparent electrode. The discharge tube for display according to the above description. 27. A ratio of a width of a mother electrode constituting the address electrode to a pitch of a discharge region arranged in an extending direction of an electrode pair constituting the display electrode is 0.03: 1 to 0.03.
27. The display discharge tube according to claim 26, wherein the ratio is 1: 1. 28. A first substrate comprising: a plurality of display electrodes formed of a pair of electrodes substantially parallel to each other; and a plurality of first address electrodes arranged substantially in parallel with the display electrodes;
A second substrate having a plurality of second address electrodes disposed to face the display electrode and intersecting the display electrode and the first address electrode and substantially parallel to each other, wherein the first substrate and the second A method for driving a display discharge tube in which a discharge region is formed by sealing a gas between the substrate and a substrate, comprising: a dielectric layer covering the display electrode, wherein the display electrode is formed of an electrode pair; With address electrode pairs,
At least one address electrode is covered with a dielectric layer, and a reset discharge is performed between the display electrode pairs or between the display electrode pairs and the address electrodes to erase charges on the electrode surfaces. Address discharge, a space charge generated by the address discharge is accumulated in an electrode pair of the display common electrode, and a main discharge for display is performed between the electrode pair. Drive method. 29. A first substrate comprising: a plurality of display electrodes formed of a pair of electrodes substantially parallel to each other; and a plurality of first address electrodes arranged substantially parallel to the display electrodes;
A second substrate having a plurality of second address electrodes disposed to face the display electrode and intersecting the display electrode and the first address electrode, and being substantially parallel to each other, wherein the first substrate and the second A method for driving a display discharge tube in which a discharge region is formed by sealing a gas between the substrate and a substrate, comprising: a dielectric layer covering the display electrode, wherein the display electrode is formed of an electrode pair; With address electrode pairs,
At least one address electrode is covered with a dielectric layer, and a reset discharge is caused between the electrode pair of the display electrodes or between the electrode or the electrode pair of the display electrode and the address electrode, and on the electrode pair of the display electrode. A method of driving a display discharge tube, comprising: after accumulating charges uniformly, erasing wall charges accumulated in the electrode pairs of the electrodes by discharging between the address electrode pairs. 30. A first substrate comprising: a plurality of display electrodes formed of a pair of electrodes substantially parallel to each other; and a plurality of first address electrodes arranged substantially parallel to the display electrodes;
A second substrate having a plurality of second address electrodes that are arranged to face the display electrode and intersect with the display electrode and the first address electrode, and are substantially parallel to each other. The first substrate and the second substrate A method for driving a display discharge tube in which a discharge region is formed by sealing a gas between the substrate and a substrate, comprising: a dielectric layer covering the display electrode, wherein the display electrode is formed of an electrode pair; With address electrode pairs,
The semiconductor device has a four-electrode structure in which at least one address electrode covered with a dielectric layer is provided on the same substrate as the electrode pair of the display electrode, and the address electrode is arranged between the electrode pair of the display electrode. And a reset discharge for making the potential of the electrode surface uniform between the address electrode and the display electrode. 31. A first substrate having a plurality of display electrodes constituted by pairs of electrodes substantially parallel to each other, and a plurality of first address electrodes arranged substantially parallel to the display electrodes;
A second substrate having a plurality of second address electrodes that are arranged to face the display electrode and intersect with the display electrode and the first address electrode, and are substantially parallel to each other. The first substrate and the second substrate A method for driving a display discharge tube in which a discharge region is formed by sealing a gas between the substrate and a substrate, comprising: a dielectric layer covering the display electrode, wherein the display electrode is formed of an electrode pair; With address electrode pairs,
The semiconductor device has a four-electrode structure in which at least one address electrode covered with a dielectric layer is provided on the same substrate as the electrode pair of the display electrode, and the address electrode is arranged between the electrode pair of the display electrode. And a trigger signal is applied to the address electrode.