JPH11329262A - Plasma display panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To alleviate a thermal stresses applied to a panel substrate which is caused by a temperature difference generated in the vicinity of a boundary between a display area and a nondisplay area. SOLUTION: This PDP 1 is provided with a front glass substrate 2 of a display face, and a back glass substrate 3 arranged oppositely faced for sandwiching a discharge space with the front glass substrate 2. Elementary glass such as float glass is used for the front and back glass substrates 2, 3. A network of narrow-opening-like metal member 11 having thermal conductivity higher than that of the material of the front glass substrate 2 is embedded inside the substrate 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a plasma display panel (PDP).
And the structure of a glass substrate used for a PDP.

[0002]

2. Description of the Related Art FIG.
FIG. 1 is a perspective view schematically showing a structure of a conventional PDP 101 described in Japanese Patent Application Laid-Open Publication No. H10-15095. As shown in FIG.
Has a front glass substrate 102 serving as a display surface, and a rear glass substrate 103 disposed opposite to the front glass substrate 102 with a discharge space interposed therebetween. These front glass substrates 1
For the glass substrate 02 and the rear glass substrate 103, a so-called elementary glass such as a float glass is used.

[0005] On the surface of the front glass substrate 102 on the side of the discharge space, the display electrodes 104 opposed to each other at a predetermined interval are provided.
a and 104b (hereinafter collectively referred to as "display electrodes 104") are formed extending in the X direction shown in FIG. On the display electrodes 104, bus electrodes 105 for lowering the resistance of the display electrodes 104 are formed. The display electrode 104 and the bus electrode 105 are covered with a transparent dielectric layer 106, and furthermore, the transparent dielectric layer 106
Is covered with a protective layer 107.

On the other hand, a plurality of address electrodes 10 parallel to each other are formed on the surface of the rear glass substrate 103 on the side of the discharge space.
8 are formed extending in the Y direction perpendicular to the X direction. Between adjacent address electrodes 108, partition walls 110 for separating each discharge cell are formed extending in the Y direction. Then, a phosphor 109 is applied on the surface of each address electrode 108 and on the side wall surface of the partition 110.

The conventional PDP 101 is configured as described above, and when displaying an image, the display electrodes 104a,
By applying a high voltage of about 200 V between the electrodes 104b, a discharge is generated between the two electrodes, and the phosphor 109 is excited by ultraviolet rays generated by the discharge to promote light emission.

[0006]

FIG. 8 shows the PDP 101.
1 is a top view schematically showing the entire configuration of the PDP 101, and particularly corresponds to a view of the entire PDP 101 from the display surface side of the front glass substrate 102. However, for convenience of explanation, the display electrode 1
04 and the address electrodes 108 are indicated by broken lines. FIG.
As shown in the figure, the long side of the front glass substrate 102 is longer than the long side of the rear glass substrate 103,
Is shorter than the short side of the rear glass substrate 103. Therefore, there is a region where the front glass substrate 102 and the rear glass substrate 103 do not face each other.

A display electrode 104c located at the end of the plurality of display electrodes 104 and a front glass substrate 102
There is a certain distance between the short sides of the rear glass substrate 103 and the address electrodes 108c located at the end of the plurality of address electrodes 108, similarly. I do.

For the above reasons, the front glass substrate 1
In 02, there is an area where the display electrode 104 and the address electrode 108 do not face each other and an image is not displayed (hereinafter, referred to as a “non-display area”). Specifically, the front glass substrate 102 and the rear glass substrate 103 do not face each other, and the outer peripheral portion of the front glass substrate 102, which is hatched in FIG.

The display electrode 104 and the address electrode 1
08 is opposed to each other, and heat is generated by discharge in a region where an image is displayed (hereinafter, referred to as a “display region”), whereas no heat is generated in a non-display region because no discharge occurs. Therefore, according to such a conventional PDP 101, a temperature difference is generated near the boundary between the display area and the non-display area, and in the worst case, the sealing of the panel is broken by thermal stress caused by the temperature difference. was there.

The present invention has been made to solve such a problem, and can alleviate thermal stress applied to a panel substrate due to a temperature difference generated near a boundary between a display area and a non-display area. The purpose is to obtain PDP.

[0011]

Means for Solving the Problems Claim 1 of the present invention
The plasma display panel according to the present invention includes: a first substrate on which a plurality of first electrodes are formed; and a second substrate on which a plurality of second electrodes are formed, the first substrate being opposed to the first substrate with a discharge space therebetween, In the inside of the first substrate, at least a non-display area including a boundary between a display area where the first and second electrodes face each other and a non-display area where the first and second electrodes do not face each other, A member made of a material having a higher thermal conductivity than the material is embedded.

According to a second aspect of the present invention, there is provided the plasma display panel according to the first aspect, wherein the member extends to a display area within the first substrate. It is embedded, and the shape of the member is net-like.

According to a third aspect of the present invention, there is provided the plasma display panel according to the second aspect, wherein the member is a metal member, and the metal member is grounded. It is.

The plasma display panel according to a fourth aspect of the present invention is the plasma display panel according to the first aspect, wherein the member is provided only in a non-display area including a boundary in the inside of the first substrate. It is characterized by being buried.

According to a fifth aspect of the present invention, there is provided a plasma display panel according to the fourth aspect, wherein the member is a metal foil.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a perspective view schematically showing a structure of PDP 1 according to Embodiment 1 of the present invention. As shown in FIG. 1, the PDP 1 includes a front glass substrate 2 that is a display surface, and a rear glass substrate 3 that is disposed to face the front glass substrate 2 with a discharge space therebetween. For the front glass substrate 2 and the rear glass substrate 3, so-called elemental glass such as float glass is used. Further, inside the front glass substrate 2, a metal member 11 in the form of a fine mesh is embedded which is made of a material having a higher thermal conductivity than the material of the front glass substrate 2. Although FIG. 1 shows a case where the metal member 11 is embedded only inside the front glass substrate 2, the metal member made of a material having a higher thermal conductivity than the material of the rear glass substrate 3 is replaced with a rear glass substrate. It may be embedded inside the substrate 3. The same applies to the embodiments described below. Although FIG. 1 shows the metal member 11 having a fine mesh shape, any shape may be used as long as the visibility of the display can be ensured when an image is displayed. It may be a metal member having a shape like a letter.

On the surface of the front glass substrate 2 on the side of the discharge space, the display electrodes 4a and 4b facing each other at a predetermined interval are provided.
(Hereinafter collectively referred to as “display electrode 4”), FIG.
Are formed extending in the X direction shown in FIG. Bus electrodes 5 for reducing the resistance value of the display electrodes 4 are formed on the display electrodes 4 respectively. The display electrode 4 and the bus electrode 5 are covered with a transparent dielectric layer 6, and the transparent dielectric layer 6 is covered with a protective layer 7.

On the other hand, a plurality of address electrodes 8 parallel to each other are formed on the surface of the rear glass substrate 3 on the side of the discharge space.
It is formed to extend in the Y direction orthogonal to the direction. Between adjacent address electrodes 8, partition walls 10 for separating each discharge cell are formed extending in the Y direction.
Then, a phosphor 9 is applied on the surface of each address electrode 8 and on the side wall surface of the partition 10.

FIG. 2 is a cross-sectional view showing a cross-sectional structure when the front glass substrate 2 is cut along the XY plane shown in FIG. 1. In particular, the metal member 11 in the front glass substrate 2 is embedded. It shows the structure of the part where it is. However, in FIG. 2, the display area where the display electrode 4 and the address electrode 8 face each other is indicated by a broken line. As shown in the figure, the metal member 11 is formed over the entire surface of the front glass substrate 2 including the display area.

As described above, according to the PDP of the first embodiment, a metal member made of a material having a higher thermal conductivity than the material of the front glass substrate is embedded in the front glass substrate.
This metal member is formed over the entire surface of the front glass substrate including the display area. Therefore, heat generated in the display area of the front glass substrate due to the discharge is transmitted to the non-display area of the front glass substrate through the metal member. Thereby, the temperature difference generated near the boundary between the display region and the non-display region can be reduced, and the thermal stress applied to the front glass substrate can be reduced. When metal members are embedded in both the front glass substrate and the rear glass substrate, the effect of relieving thermal stress is further increased.

Further, by making the shape of the metal member such as a fine mesh or a grid shape, the visibility of display when displaying an image is ensured.

Embodiment 2 FIG. In the first embodiment, the case where the metal member 11 is formed over the entire surface inside the front glass substrate 2 has been described. However, the metal member 11 may be formed only on a part of the inside of the front glass substrate 2.

FIG. 3 is a cross-sectional view showing a cross-sectional structure when the front glass substrate 2 according to the second embodiment is cut along the XY plane shown in FIG. This shows the structure of the portion where the metal member 12 is embedded. The metal member 12 having a fine mesh shape is embedded only in the non-display area including the boundary between the non-display area and the display area in the inside of the front glass substrate 2. In addition, PD
Other configurations of P1 are the same as those of the first embodiment shown in FIG.

As described above, according to the PDP according to the second embodiment, since the metal member is embedded in the non-display area including the boundary between the non-display area and the display area in the inside of the front glass substrate, Thermal stress caused by a temperature difference generated near the boundary between the display and the non-display area can be reduced.

Further, since no metal member is buried in the display area in the inside of the front glass substrate, the visibility of the display in the display area does not decrease. Therefore, compared to the first embodiment in which the metal member is formed on the entire inner surface of the front glass substrate, the visibility of display can be improved.

Embodiment 3 FIG. In the second embodiment, the case where the metal member 12 having the shape of the fine mesh is embedded in the non-display area including the boundary between the non-display area and the display area in the front glass substrate 2 has been described. Instead of the fine net-like metal member 12, a metal foil is
May be buried inside.

FIG. 4 is a sectional view showing a sectional structure when front glass substrate 2 according to the third embodiment is cut along the XY plane shown in FIG. This shows the structure of the portion where the metal foil 13 is embedded. A metal foil 13 made of a material having a higher thermal conductivity than the material of the front glass substrate 2 is embedded in a non-display region including a boundary between the non-display region and the display region in the inside of the front glass substrate 2. I have. Other configurations of the PDP 1 are as follows.
This is the same as Embodiment 1 shown in FIG.

FIG. 5 is a sectional view showing a sectional structure when the front glass substrate 2 shown in FIG. 4 is cut along the XZ plane shown in FIG. The non-display area of the display surface of the front glass substrate 2 is covered with the housing 14, and the non-display area is an invisible area. Since the metal foil 13 is embedded in the front glass substrate 2 in the invisible area, the metal foil 1
The presence of 3 does not hinder the display of the image.

As described above, according to the PDP according to the third embodiment, since the metal foil is embedded in the non-display area including the boundary between the non-display area and the display area in the inside of the front glass substrate, Compared with the second embodiment in which a fine mesh-like metal member is embedded inside the substrate, the thermal stress caused by the temperature difference generated near the boundary between the display area and the non-display area can be further reduced.

In addition, since no metal foil is buried in the display area in the inside of the front glass substrate, the visibility of display when displaying an image is ensured.

Embodiment 4 FIG. FIG. 6 is a cross-sectional view showing a cross-sectional structure when the front glass substrate 2 according to the fourth embodiment is cut along the XY plane shown in FIG. Indicates the structure of the portion where the burial is buried. The metal member 11 is formed over the entire inside surface of the front glass substrate 2 as in the first embodiment shown in FIG. And the metal member 11 is
It is connected via wiring 15 to an aluminum plate or the like arranged as a support plate on the back of DP1, and is grounded. In addition,
Other configurations of the PDP 1 are the same as those of the first embodiment shown in FIG.
Is the same as

As described above, according to the PDP according to the fourth embodiment, since the metal member buried inside the front glass substrate is grounded, the electromagnetic wave generated by the discharge and the PDP
Electromagnetic waves generated by energizing an electric circuit for operating P are shielded by a grounded metal member.
Therefore, it is possible to prevent the electromagnetic waves from being emitted from the front glass substrate to the outside of the PDP.

[0033]

According to the first aspect of the present invention, heat generated in the display area of the first substrate due to discharge is not displayed from the display area by the member embedded inside the first substrate. Can be distributed over the area. Therefore, the temperature difference generated near the boundary between the display area and the non-display area can be reduced.

According to the second aspect of the present invention, since the members are embedded in the display area and the non-display area of the first substrate, the dispersion of heat in the display area to the non-display area is promoted. Thus, the temperature difference generated near the boundary between the display area and the non-display area can be further reduced. Moreover, since the members are mesh-shaped, the visibility of the display is ensured.

According to the third aspect of the present invention, since the metal member is grounded, an electromagnetic wave generated by electric discharge or an electromagnetic wave generated by energizing an electric circuit for operating the plasma display panel. To
It can be shielded by a grounded metal member.

According to the fourth aspect of the present invention, the member is embedded only in the non-display area including the boundary in the inside of the first substrate, and is not embedded in the display area. There is no reduction in the visibility of the display in the area.

According to the fifth aspect of the present invention, since the member buried inside the first substrate is a metal foil, when the fine mesh-like member is buried inside the first substrate. In comparison with the above, the dispersion of heat generation in the display area to the non-display area is promoted, and the temperature difference generated near the boundary between the display area and the non-display area can be further reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing a structure of a PDP 1 according to Embodiment 1 of the present invention.

FIG. 2 shows a metal member 1 inside a front glass substrate 2.
FIG. 2 is a cross-sectional view showing a structure of a portion where 1 is embedded.

FIG. 3 shows a metal member 1 inside the front glass substrate 2.
FIG. 2 is a cross-sectional view illustrating a structure of a portion where a second semiconductor device is embedded.

FIG. 4 shows a metal foil 13 inside the front glass substrate 2.
It is sectional drawing which shows the structure of the part where is embedded.

FIG. 5 is a cross-sectional view showing a cross-sectional structure of front glass substrate 2 shown in FIG.

FIG. 6 shows a metal member 1 inside the front glass substrate 2.
FIG. 2 is a cross-sectional view showing a structure of a portion where 1 is embedded.

FIG. 7 is a perspective view schematically showing a structure of a conventional PDP 101.

FIG. 8 is a top view schematically showing the overall configuration of PDP 101.

[Explanation of symbols]

1 PDP, 2 front glass substrates, 3 rear glass substrates, 11, 12 metal members, 13 metal foil.

Claims (5)

[Claims] A first substrate having a plurality of first electrodes formed thereon; and a second substrate having a plurality of second electrodes formed opposed to the first substrate with a discharge space interposed therebetween. Within the first substrate, at least a display area where the first and second electrodes face each other and the first and second electrodes.
A plasma display panel, wherein a member made of a material having a higher thermal conductivity than the material of the first substrate is buried in the non-display region including a boundary with a non-display region in which electrodes do not face each other. 2. The plasma display panel according to claim 1, wherein the member extends and is embedded in the display region in the inside of the first substrate, and the member has a net shape. 3. The plasma display panel according to claim 2, wherein the member is a metal member, and the metal member is grounded. 4. The member is embedded only in the non-display region including the boundary in the inside of the first substrate,
The plasma display panel according to claim 1. 5. The plasma display panel according to claim 4, wherein said member is a metal foil.