KR20050038938A - Plasma display and plasma display device with the same - Google Patents

Abstract

The present invention relates to a plasma display and a plasma display device having the same, which minimizes reflection of external light and secures a viewing angle of a peripheral screen and obtains the same visual effect as in actual situations. And a plasma display for forming an image by phosphors excited by plasma discharge, the plasma display comprising an upper plate and a lower plate disposed to face each other, wherein at least an inner surface of the upper plate and the lower plate. And the outer surface is convexly formed with a constant curvature toward the lower plate, and when the horizontal curvature radius of the inner and outer surfaces is Rh, the vertical curvature radius is Rv, and the diagonal curvature radius is Rd, the curvature radii are 2.0R. ≤Rh ≤10.0R, 50,000R ≤Rv ≤100,000R, 2.0R ≤Rd ≤1 Each condition of 0.0R is satisfied.

Description

Plasma display and plasma display device having same {PLASMA DISPLAY AND PLASMA DISPLAY DEVICE WITH THE SAME}

The present invention relates to a plasma display, and more particularly, to a plasma display and a plasma display apparatus having the same, which minimizes reflection of external light and secures a viewing angle with respect to a peripheral part of the screen, and obtains the same visual effect as the actual situation. It is about.

A plasma display is an apparatus for forming an image by phosphors excited by plasma discharge, and usually includes an upper plate and a lower plate facing each other.

The lower plate is provided with address electrodes, a dielectric layer is provided over the address electrodes, and a plurality of barrier ribs are provided over the dielectric layer to maintain a discharge distance and prevent electro-optical crosstalk between cells.

The top plate is provided with display electrodes in a direction orthogonal to the address electrodes, and a dielectric layer, an MgO passivation layer, and the like are sequentially provided on the display electrodes.

Further, red, green and blue phosphor layers are provided on the inner surface of the partition and the surface of the dielectric layer.

The plasma display having such a configuration applies a predetermined voltage to the address electrode and the display electrode to cause a plasma discharge therebetween, and excites a phosphor layer formed in a predetermined pattern by ultraviolet rays generated at the time of discharge to realize a predetermined image. Done.

However, according to the plasma display having the above-described configuration, since the upper plate is formed in a substantially flat plane, when a large panoramic system is implemented using the plasma display, a visual effect as in a real situation can be obtained. In addition, there is a problem that it is not easy to secure the viewing angle with respect to the screen peripheral portion in the front.

Accordingly, an object of the present invention is to provide a plasma display and a plasma display device having the same, which can easily secure a viewing angle with respect to a screen peripheral part in the front and obtain visual effects as in actual situations. do.

The object of the present invention described above,

An upper plate and a lower plate disposed to face each other;

Display electrodes and address electrodes provided on the upper and lower plates, respectively;

Barrier ribs forming a discharge space while maintaining a constant cell gap between both substrates;

Phosphors excited and emitted by the discharge gas filled in the discharge space between the two substrates;

At least the inner and outer surfaces of the upper plate and the upper plate of the upper plate and the lower plate is formed in a convex shape, for example inverse spherical shape toward the lower plate, the major axis radius of curvature Rh, the minor axis radius of curvature Rv, When the diagonal curvature radius is Rd, the following conditions are satisfied.

2.0R ≤Rh ≤10.0R

50,000R ≤Rv ≤100,000R

2.0R ≤Rd ≤10.0R

In the above, 1R represents the product of 1.767 and the effective surface diagonal length of the upper plate.

Plasma display device having a plasma display having such a configuration is characterized in that it is easy to secure the viewing angle of the screen periphery in front when implementing the panoramic system, and obtain a visual effect as in actual situations.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a cross-sectional view of a plasma display according to an exemplary embodiment of the present invention, and FIG. 2 is a view for illustrating the outer surface and inner surface curvature radii of FIG. 1.

As shown, the plasma display 100 of the present embodiment includes an upper plate 10 maintaining a predetermined interval and a lower plate 20 disposed to face the upper plate 10.

In the above, a plurality of address electrodes 22 are provided on the inner surface of the lower plate 20 at regular intervals, and a first dielectric layer 24 is provided on the address electrodes 22, and on the first dielectric layer 24. A plurality of partitions 26 are provided in the same direction as the address electrodes 22 in a portion corresponding to a space where the address electrodes 22 are not provided, and an upper end of the partition 26 is formed on an inner surface of the upper plate 10. Is in contact with the second dielectric layer 12 formed in 10a).

Here, the partition 30 is not limited to the present embodiment and various types may be used.

In addition, a phosphor layer 28 having a predetermined color is provided on the side surface of the partition 26 and the first dielectric layer 24 between the partition walls 26, and an address is disposed between the top plate 10 and the second dielectric layer 12. Display electrodes 14 orthogonal to the electrodes 22 are provided.

Here, although not shown, the display electrodes 14 are arranged in a group in parallel with the scan electrode (not shown) and the common electrode (not shown), and are generally discharged on the surface of the second dielectric layer 12. A protective layer (not shown), such as MgO, is formed to protect the second dielectric layer 12 from the ion bombardment.

In the plasma display device having such a configuration, the upper plate 10 is formed into a spherical surface, preferably an inverted spherical shape, in which the inner surface 10a and the outer surface 10b are convex toward the lower plate 20, and in front of the upper plate 10. When observed, the central part is formed to have a concave shape.

According to the shape of the upper plate 10 having such a configuration, since the thickness t1 of the peripheral portion and the thickness t2 of the central portion are the same, there is no fear that the image quality is deteriorated due to the luminance difference of the peripheral portion compared to the central portion.

In addition, according to the experiments of the present inventors, in order to obtain the same visual effect as the actual situation while minimizing external light reflection, the radius of curvature Rh of the major axis X direction of the outer surface 10b of the upper plate 10 is 2.0R ≦ Rh ≦ 10.0R. Formed within the range satisfying the condition of, the short curvature (Y) direction curvature radius (Rv) is formed within the range satisfying the condition of 50,000R ≤ Rv ≤ 100,000R, diagonal (Z) direction curvature radius (Rd) It was found that it is preferable to form the silver within a range satisfying the condition of 2.0R ≦ Rd ≦ 10.0R.

In the above, 1R was published in the 1993 SID Society paper by Matsushita, Japan, and represents the product of 1.767 and the effective surface diagonal length (d) of the top plate 10. The definition of 1R is different depending on the specifications of the top plate. Will have

Thus, when the outer surface 12b and the inner surface of the upper plate 12 are formed within the radius of curvature described above, the viewing angle with respect to the screen periphery in front of the upper plate 10 is easily secured, and the observer's eyes are long-axis. In the case where it is assumed to be located at the same position as the radius of curvature Rh of the outer surface curvature, only the observer's eyes are reflected on the outer surface of the upper plate 10, thereby minimizing external light reflection.

3 illustrates an embodiment of a plasma display apparatus having a plasma display panel according to an embodiment of the present invention described above, and particularly illustrates an exploded perspective view.

As shown, the plasma display apparatus includes the above-described plasma display 100, the chassis base 110 on which the display 100 is installed, and the driving circuit boards 120 mounted on one surface of the chassis base 110. And front and rear cases 130 and 140 forming an appearance.

Therefore, when using the plasma display device formed with the plasma display 100 as a large panoramic system, the same visual effect as the actual situation can be obtained.

4 is a cross-sectional view of a plasma display according to another embodiment of the present invention. The plasma display 100 'of the present embodiment has the above-described structure except that the lower plate 20' is formed with the same curvature as the upper plate 10. It has the same configuration as in one embodiment.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the range of.

As described above, a plasma display having a top plate formed of a concave spherical surface having a constant curvature and an outer surface as described above, and a display device having the display can minimize reflection of external light and easily secure a viewing angle around the screen in the front, It is possible to prevent the deterioration of image quality due to the difference in luminance between the and peripherals.

In addition, since the image implemented through the upper plate is implemented in the viewer's eyes with the same visual effect as the actual situation, when the large-scale panorama system is implemented using the plasma display, it is possible to improve the realism.

1 is a cross-sectional view of a plasma display according to an embodiment of the present invention.

FIG. 2 is a diagram for illustrating an outer surface and inner surface radius of curvature of FIG. 1. FIG.

3 is an exploded perspective view of the plasma display device having the plasma display of FIGS. 1 and 2;

4 is a sectional view of a plasma display according to another embodiment of the present invention;

Claims (5)

An upper plate and a lower plate disposed to face each other; Display electrodes and address electrodes provided on the upper and lower plates, respectively; Barrier ribs forming a discharge space while maintaining a constant cell gap between both substrates; Phosphors excited and emitted by the discharge gas filled in the discharge space between the two substrates; And an inner surface and an outer surface of the upper plate are convexly formed with a constant curvature toward the lower plate. The plasma display device of claim 1, wherein the radius of curvature of the outer surface and the inner surface of the upper plate satisfies the following conditions when the long axis radius of curvature of the plasma display is Rh, the short axis radius of curvature is Rv, and the diagonal direction radius of curvature is Rd. display. 2.0R ≤Rh ≤10.0R 50,000R ≤Rv ≤100,000R 2.0R ≤Rd ≤10.0R 1R represents the product of 1.767 and the effective surface diagonal length of the face plate. The plasma display panel according to claim 1 or 2, wherein the lower plate is formed in the same shape as the upper plate. A plasma display device comprising a plasma display for forming an image by a phosphor excited by plasma discharge, the plasma display device comprising: The plasma display includes an upper plate and a lower plate disposed to face each other, wherein at least an inner surface and an outer surface of the upper plate and the lower plate are convexly formed with a constant curvature toward the lower plate. The plasma display apparatus of claim 4, wherein the radius of curvature of the outer surface and the inner surface of the upper plate satisfies the following condition when the long axis radius of curvature of the plasma display is Rh, the short axis radius of curvature is Rv, and the diagonal direction radius of curvature is Rd. Display device .. 2.0R ≤Rh ≤10.0R 50,000R ≤Rv ≤100,000R 2.0R ≤Rd ≤10.0R 1R represents the product of 1.767 and the effective surface diagonal length of the face plate.