KR100592307B1 - Plasma display panel - Google Patents

Abstract

Plasma display panel according to the present invention comprises a front substrate and a rear substrate disposed to face each other; Address electrodes spaced apart from each other on the rear substrate and disposed side by side; It is provided between the front substrate and the back substrate, a plurality of which is located in each of the central portion and both ends of the central portion and a pair of inclined portion is narrowed away from the central portion, the discharge cell is discharged therein ; Phosphor layers disposed in the discharge cells; Bus electrodes disposed on the front substrate in pairs with each of the discharge cells in a direction crossing the address electrodes; It is disposed to be electrically connected to the bus electrodes, the main body portion disposed in the center portion of each discharge cell, the width thereof is formed to narrow in the direction of the bus electrode from the main body portion and disposed on the inclined portion of the discharge cell Protruding electrodes having an inclined extension; And a width extending from the bus electrode to the inclined extension portion of the protruding electrode and contacting the inclined extension portion, the width of the protruding electrode being further away from the main body portion of the protruding electrode so as to correspond to the shape of the inclined extension portion of the protruding electrode. A conductor layer having a tapered portion is provided. As a result, the resistance generated between the bus electrode and the protruding electrode during the sustain discharge can be reduced, the power consumption can be reduced, and the luminous efficiency can be increased.

Description

Plasma Display Panel {Plasma display panel}

1 is a partially separated perspective view showing an example of a conventional plasma display panel.

FIG. 2 is a rear view illustrating a state in which bus electrodes and protruding electrodes of the plasma display panel of FIG. 1 are disposed.

3 is a rear view illustrating a state in which bus electrodes and protruding electrodes are disposed in the plasma display panel according to the present invention.

4 is a cross-sectional view taken along the line IV-IV of FIG. 3.

<Description of Symbols for Main Parts of Drawings>

10 front substrate 11 front dielectric layer

12 ... protective layer 20 ... back board

21.Back dielectric layer 22.Address electrode

30 bulkhead 31 discharge cell

32 phosphor layer 33 non-discharge area

40 ... Discharge sustaining electrode pair 41 ... Bus electrode

42 Protruding electrode 50 Conductor layer

1, 100 ... plasma display panel 311 ... center

312 Slope 421 Headquarters

422 Slant extension 423 Parallel extension

424 ... concave part 501 ... taper part

502 ... Parallel

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel having an improved structure to reduce power consumption and increase luminous efficiency by reducing resistance between bus electrodes and protruding electrodes generated during sustain discharge.

In general, a plasma display panel is a device for realizing a predetermined image by exciting a phosphor with ultraviolet rays generated by gas discharge, and has been spotlighted as a next-generation thin display device because a large screen can be configured with high resolution.

1 and 2, a conventional plasma display panel 1 includes a front substrate 10 and a rear substrate 20, address electrodes 22, discharge cells 31, and phosphor layers 32. ) And a discharge sustaining electrode pair 40.

The front substrate 10 and the rear substrate 20 are disposed to face each other, and the front substrate 10 is formed of a transparent material such as glass that can transmit visible light so that an image is displayed. The front dielectric layer 11 and the back dielectric layer 21 are formed on the bottom surface of the front substrate 10 and the top surface of the back substrate 20, respectively. The front dielectric layer 11 and back dielectric layer 21 are each made of a dielectric such as PbO, B ₂ O ₃ , SiO _2, and the like. The front dielectric layer 11 is covered with a protective layer 12 such as MgO.

The address electrodes 22 are arranged side by side to be spaced apart from each other on the back substrate 20, and have a stripe shape. The address electrodes 22 are covered by the back dielectric layer 21 and embedded therein, and a partition wall 30 is formed between the address electrodes 22 on the top of the back dielectric layer 21.

The discharge cells 31 are partitioned by the partition walls 30 and are provided between the front substrate 10 and the rear substrate 20. The discharge is generated inside the discharge cell 31 to implement an image. The discharge cell 31 has a central portion 311 and a pair of inclined portions 312 which are positioned at both ends of the central portion 311 and become narrower from the central portion 311. 1 and 2, the discharge cell 31 has an octagonal shape as a whole, and the inclined portion 312 has a trapezoidal shape. As shown in FIGS. 1 and 2, non-discharge regions 33 in which discharge is not generated are arranged around the discharge cells 31 along the direction in which the address electrode 22 is formed. It is provided every time.

The phosphor layer 32 is disposed in each of the discharge cells 31. The phosphor layer 32 is formed by being applied to an inner surface of the barrier rib 30 and an upper surface of the back dielectric layer 21 surrounded by the barrier rib 30. The color of the phosphor layer 32 is roughly divided into red, green, and blue to realize an image. Each discharge cell 31 is filled with a discharge gas in which neon (Ne), xenon (Xe), and the like are mixed, and the phosphor layer 32 emits visible light by being excited by ultraviolet rays generated during discharge.

The discharge sustaining electrode pairs 40 are disposed on the rear surface of the front substrate 10. The discharge sustaining electrode pair 40 is covered by the front dielectric layer 11 and embedded. The discharge sustaining electrode pair 40 has bus electrodes 41 and protruding electrodes 42.

The bus electrodes 41 are arranged in pairs to each of the discharge cells 31 in a direction crossing the address electrodes 22. Since the bus electrodes 41 apply voltage to each of the protruding electrodes 42, the bus electrodes 41 are formed of a metal having excellent conductivity, such as silver (Ag) or copper (Cu).

The protruding electrodes 42 are arranged to be connected to the bus electrodes 41 and electrically connected to the bus electrodes 41. Each of the protruding electrodes 42 has a main body portion 421 disposed at the center portion 311 of each of the discharge cells 31 and the width of the protruding electrodes 42 from the main body portion 421 toward the bus electrode 41. And an inclined extension portion 422 disposed on the inclined portion 312 of the discharge cell 31, extending from the inclined extension portion 422 toward the bus electrode 41, and having an inclined extension portion 422. It has a parallel extension portion 423 is formed in the same width as the width of the end of. A recess 424 immersed in the direction of the bus electrode 41 is formed at an end of the main body 421. The protruding electrodes 42 are disposed to face each other in the discharge cells 31. Each protruding electrode 42 is formed of a transparent material such as indium tin oxide (ITO) in order to transmit visible light emitted from the phosphor layer 32.

However, the following problem occurs in the process of implementing the image by driving the plasma display panel 1 having the above-described configuration. In the process of reaching the parallel extension portion 423 of each of the protruding electrodes 42 after the sustain discharge is generated in the gap between the protruding electrodes 42 arranged to face each other in each discharge cell 31. There is a problem in that resistance is generated at the connecting portion of each protruding electrode 42 and the bus electrode 41 and a partial disconnection is generated. In addition, due to the high resistance at the connection portion between each protruding electrode 42 and the bus electrode 41, there is a problem that the power consumption is high and the luminous efficiency is lowered.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to arrange a conductor layer from the bus electrode toward the protruding electrode so as to contact the protruding electrode, thereby reducing the resistance generated during discharge, reducing power consumption, and emitting light. It is to provide a plasma display panel whose structure is improved to increase efficiency.

In order to achieve the above object, the plasma display panel according to the present invention,

A front substrate and a rear substrate disposed to face each other;

Address electrodes spaced apart from each other on the rear substrate and disposed side by side;

A large number is provided between the front substrate and the rear substrate, each of which has a central portion and a pair of inclined portions positioned at both ends of the central portion thereof and narrowed away from the central portion, and discharge cells are discharged therein. ;

Phosphor layers disposed in the discharge cells;

Bus electrodes disposed on the front substrate in pairs with each of the discharge cells in a direction crossing the address electrodes;

It is disposed to be electrically connected to the bus electrodes, the main body portion disposed in the center portion of each discharge cell, the width thereof is formed to narrow in the direction of the bus electrode from the main body portion and disposed on the inclined portion of the discharge cell Protruding electrodes having an inclined extension; And

Extends from the bus electrode to the inclined extension of the protruding electrode and is disposed to contact the inclined extension, and the width thereof becomes narrower in a direction away from the main body of the protruding electrode so as to correspond to the shape of the inclined extension of the protruding electrode; The paper is characterized by comprising a conductor layer having a tapered portion.

According to the present invention, it is preferable that the conductor layer is disposed to completely cover the rear surface of the inclined extension portion of each of the protruding electrodes.

In addition, according to the present invention, the conductor layer is preferably formed integrally with the bus electrode.

According to the present invention, each of the protruding electrodes further includes a parallel extension portion extending from the inclined extension portion in the direction of the bus electrode and having a width equal to the width of an end portion of the inclined extension portion, wherein the conductor layer is provided with the conductive layer. It is preferable to arrange | position so that the back surface of each parallel extension part and inclination extension part of each protruding electrode may be completely covered.

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

3 is a rear view illustrating a state in which bus electrodes and protruding electrodes are disposed in the plasma display panel according to the present invention, and FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. 3.

Referring to FIGS. 3 and 4, the plasma display panel 100 of the present embodiment is the front substrate 10 and the back substrate 20, similar to the conventional plasma display panel 1 described with reference to FIGS. 1 and 2. And the address electrodes 22, the discharge cells 31, the phosphor layer 32, and the discharge sustaining electrode pair 40.

In the present embodiment, the front substrate 10 and the rear substrate 20, the address electrodes 22, the discharge cells 31, the phosphor layer 32, and the discharge sustain electrode pair 40 are shown in FIG. 1 and 2 have the same configuration and function as those in the conventional plasma display panel 1 described above, and thus, detailed descriptions thereof will be omitted.

3 and 4, the same members or portions as those shown in FIGS. 1 and 2 are given the same reference numerals, and detailed descriptions thereof will be omitted.

On the other hand, the plasma display panel 100 of the present embodiment has a conductor layer 50 unlike the conventional plasma display panel 1.

The conductor layer 50 extends from the bus electrode 41 to the inclined extension portions 422 of the protruding electrodes 42 and contacts the inclined extension portions 422. The conductor layer 50 is formed to correspond to the shape of the protruding electrode 42, and has a tapered portion 501 and a parallel portion 502. The tapered portion 501 is a portion whose width becomes narrower in a direction away from the main body portion 421 of the protruding electrode 42. The parallel portion 502 extends from the tapered portion 501 in the direction of the bus electrode 41 and has a constant width throughout. In the present embodiment, the conductor layer 50 is disposed so as to completely cover the rear surfaces of each of the parallel extension portion 423 and the gradient extension portion 422 of each of the protruding electrodes 42. The rear surface of the protruding electrode 42 is a portion facing the rear substrate 20 of the protruding electrode 42. The conductor layer 50 is formed of a metal having excellent conductivity, such as silver (Ag), copper (Cu), or the like, and is preferably formed integrally with the bus electrode 41 as in the present embodiment.

Hereinafter, the function of the plasma display panel 100 of the present embodiment configured as described above will be described.

As shown in FIG. 3, in order to drive the plasma display panel 100 including the conductor layer 50 to implement an image, first, an address discharge is generated so that a predetermined wall charge is formed in the discharge cell 31. . Thereafter, a voltage is applied to the pair of bus electrodes 41 disposed in each discharge cell 31 so that sustain discharge is generated between the protruding electrodes 42 arranged to face each other in the discharge cells 31. do.

The sustain discharge first occurs in the gap between the protruding electrodes 42 and then reaches the parallel extension 423 through the inclined extension 422 of each protruding electrode 42, and thus discharge cell 31. ) Will spread throughout. However, unlike the conventional display panel 1, the display panel 100 of the present embodiment is integrally formed with the bus electrode 41, and the inclined extension portion 422 of the protruding electrode 42 from the bus electrode 41 is formed. A conductor layer 50 is provided that extends to the parallel extension portion 423 and is disposed in contact so as to completely cover the inclined extension portion 422 and the parallel extension portion 423. Since the conductor layer 50 is in contact with the protruding electrode 42 together with the bus electrode 41, the contact area between the bus electrode 41 and the protruding electrode 42 is increased. Accordingly, resistance is absorbed between the bus electrode 41 and the protruding electrode 42 during the sustain discharge, and no partial break occurs between the bus electrode 41 and the protruding electrode 42. In addition, power consumption is lowered and light emission efficiency is increased due to the low resistance at the connection portion between each protruding electrode 41 and the bus electrode 42.

The charges generated by the sustain discharge as described above collide with the discharge gas, and thus plasma is formed to generate ultraviolet rays. The phosphor layer 32 is excited by the generation of ultraviolet rays, thereby realizing an image.

As mentioned above, the present invention has been described in detail with reference to preferred embodiments, but the present invention is not limited to the above embodiments, and various modifications may be made by those skilled in the art within the technical idea of the present invention. It is obvious.

For example, in the present embodiment, the conductor layer is formed integrally with the bus electrode, but the conductor layer may not be integrally formed with the bus electrode, or may be another kind of conductive metal.

In addition, in this embodiment, the protruding electrode is provided with a parallel extension, but the protruding electrode may not have a parallel extension and may have a hexagonal shape as a whole.

In addition, in the present embodiment, the conductor layer is disposed to completely cover the inclined extension portion and the parallel extension portion of the protruding electrode, but the conductor layer must be inclined of the protruding electrode if the resistance between the protruding electrode and the bus electrode can be appropriately reduced. It may not be arranged to completely cover the extension and the parallel extension.

When using the plasma display panel according to the present invention having the above configuration, the resistance of the connection between the bus electrode and the projecting electrode is lowered, there is no partial disconnection. In addition, the low resistance at the connection portion between each protruding electrode and the bus electrode lowers power consumption and increases luminous efficiency.

Claims (4)

A front substrate and a rear substrate disposed to face each other; Address electrodes spaced apart from each other on the rear substrate and disposed side by side; A large number is provided between the front substrate and the rear substrate, each of which has a central portion and a pair of inclined portions positioned at both ends of the central portion thereof and narrowed away from the central portion, and discharge cells are discharged therein. ; Phosphor layers disposed in the discharge cells; Bus electrodes disposed on the front substrate in pairs with each of the discharge cells in a direction crossing the address electrodes; It is disposed to be electrically connected to the bus electrodes, the main body portion disposed in the center portion of each discharge cell, the width is formed to be narrowed in the direction of the bus electrode from the main body portion and disposed on the inclined portion of the discharge cell Protruding electrodes having an inclined extension; And Extends from the bus electrode to the inclined extension of the protruding electrode and is disposed to contact the inclined extension, and the width thereof becomes narrower in a direction away from the main body of the protruding electrode so as to correspond to the shape of the inclined extension of the protruding electrode; And a conductor layer having a tapered portion. The method of claim 1, And the conductor layer is disposed to completely cover the rear surface of the inclined extension portion of each of the protruding electrodes. The method of claim 1, And the conductor layer is integral with the bus electrode. The method of claim 1, Each of the protruding electrodes further includes a parallel extension part extending from the inclined extension part toward the bus electrode and having a width equal to a width of an end portion of the inclined extension part. And the conductor layer is disposed to completely cover the rear surfaces of each of the parallel extension portion and the gradient extension portion of each of the protruding electrodes.

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