KR100433226B1 - Plasma display panel - Google Patents

Abstract

The present invention relates to a plasma display panel that allows for smooth exhaust.

The plasma display panel of the present invention comprises: a partition wall formed so that the discharge cells are arranged in a delta type structure; An exhaust passage is formed between the barrier ribs in a direction crossing the address electrode, and the exhaust passage is provided in units of the pixel rows of 10 or less.

Description

Plasma Display Panel {PLASMA DISPLAY PANEL}

TECHNICAL FIELD The present invention relates to a plasma display panel, and more particularly, to a plasma display panel for smooth exhaust.

Recently, various flat panel displays have been developed to reduce weight and volume, which are disadvantages of cathode ray tubes. Such flat panel displays include Liquid Crystal Display (LCD), Field Emission Display (FED), Plasma Display Panel (PDP), and Electro-Luminescence (EL). And display devices.

PDP is a display device using a gas discharge has the advantage that it is easy to manufacture a large panel. As a PDP, a three-electrode AC surface discharge type PDP having three electrodes and driven by an alternating voltage is typical.

Referring to FIG. 1, a discharge cell of a three-electrode AC surface discharge type PDP has a first electrode 12Y and a second electrode 12Z formed on the upper substrate 10, and an address formed on the lower substrate 18. An electrode 20X is provided.

The first and second electrodes 12Y and 12Z are made of a transparent material to transmit light supplied from the discharge cells. Bus electrodes 13Y and 13Z formed of a metal material are formed on the rear surfaces of the first electrode 12Y and the second electrode 12Z to be parallel to the first and second electrodes 12Y and 12Z. The bus electrodes 13Y and 13Z are used to supply driving signals to the first and second electrodes 12Y and 12Z having high resistance values.

The upper dielectric layer 14 and the passivation layer 16 are stacked on the upper substrate 10 having the first electrode 12Y and the second electrode 12Z side by side. Wall charges generated during plasma discharge are accumulated in the upper dielectric layer 14. The protective layer 16 prevents damage to the upper dielectric layer 14 due to sputtering generated during plasma discharge, and increases emission efficiency of secondary electrons. As the protective film 16, magnesium oxide (MgO) is usually used.

The lower dielectric layer 22 and the partition wall 24 are formed on the lower substrate 18 on which the address electrode 20X is formed, and the phosphor 26 is coated on the surfaces of the lower dielectric layer 22 and the partition wall 24. The address electrode 20X is formed in the direction crossing the first electrode 12Y and the second electrode 12Z. The partition wall 24 is formed in parallel with the address electrode 20X to prevent ultraviolet rays and visible light generated by the discharge from leaking to the adjacent discharge cells.

The phosphor 26 is excited by ultraviolet rays generated during plasma discharge to generate visible light of any one of red, green, and blue. In the discharge space provided between the upper and lower plates and the partition wall, an inert gas such as He, Ne, Ar, Kr, and Xe, or a discharge gas composed of a combination thereof, or an excimer gas capable of generating ultraviolet rays by discharge, is injected into the discharge space. do.

In the conventional PDP, the first electrode 12Y and the second electrode 12Z are installed to face each other in each of the discharge cells 1 as shown in FIG. 2. The reset pulse, the scan pulse and the first sustain pulse are supplied to the first electrode 12Y. The second sustain pulse is supplied to the second electrode 12Z.

The discharge cells are initialized when the reset pulse is supplied to the first electrode 12Y. When scan pulses are supplied to the first electrode 12Y, data pulses synchronized with the scan pulses are supplied to the address electrode 20X. At this time, address discharge occurs in the discharge cells supplied with the scan pulse and the data pulse.

After the address discharge is generated in the discharge cells, the first and second sustain pulses are alternately supplied to the first electrode 12Y and the second electrode 12Z. When the first and second sustain pulses are supplied to the first electrode 12Y and the second electrode 12Z, the sustain discharge occurs in the discharge cells in which the address discharge has occurred. In this sustain discharge, the discharge time is determined according to the gray scale value, so that an image corresponding to the gray scale value is displayed.

Meanwhile, the conventional first electrode 12Y and the second electrode 12Z are formed to face each other with a large area in the discharge cells. As described above, when the first electrode 12Y and the second electrode 12Z have a large area, a large amount of power is consumed, thereby lowering the discharge efficiency of the PDP.

In order to overcome this disadvantage, the PDP as shown in FIG. 3 has been proposed.

Referring to FIG. 3, the PDP according to another exemplary embodiment has a delta structure in which discharge cells positioned adjacent to each other up and down form one pixel. In other words, according to another conventional embodiment, the PDP includes R subpixels and B subpixels positioned on the nth line (n is a natural number of 1 or more), and G subpixels positioned on the n + 1 or n-1 lines. Form one pixel.

According to another conventional embodiment of the present invention, the PDP includes the address electrode 30X, the first and second bus electrodes 32Y and 32Z provided in a direction crossing the address electrode 30X, and the first bus electrode ( A first electrode 34Y extending from 32Y and a second electrode 34Z extending from the second bus electrode 32Z are provided.

The first electrode 34Y is alternately extended on the first and second sides of the first bus electrode 32Y. In other words, if the first electrode 34Y crossing the n-th address electrode 30X is extended on the first side of the first bus electrode 32Y, the first crossing point of the n + 1th address electrode 30X is crossed. The electrode 34Y extends on the second side of the first bus electrode 32Y.

Similarly to the first electrode 34Y, the second electrode 34Z is formed to alternately extend on the first and second sides of the second bus electrode 32Z. At this time, the second electrode 34Z is formed to face the first electrode 34Y. In other words, if the first electrode 34Y crossing the n-th address electrode 30X is extended on the first side of the first bus electrode 32Y, the second electrode crossing the n-th address electrode 30X ( 34Z extends on the second side of the second bus electrode 32Z.

In the PDP according to another conventional embodiment, since the first and second electrodes 34Y and 34Z are formed only at the portion where the discharge cells are formed, the total area may be reduced while keeping the length of the electrode sufficiently long. Therefore, power consumption is reduced as the area of the first and second electrodes 34Y and 34Z is reduced, thereby improving the discharge efficiency.

4 is a diagram illustrating a partition structure used for a PDP according to another conventional embodiment.

Referring to FIG. 4, the partition wall 42 used in the PDP according to another embodiment of the present invention includes a plurality of first partition walls 36 and parallel to the bus electrodes 32Y and 32Z. The second partition 38 is formed in parallel with the address electrode 30X.

The bus electrodes 32Y and 32Z are disposed to overlap the first partition 36 so as not to block visible light generated in the discharge cells 40. The first and second electrodes 34Y and 34Z extending from the bus electrodes 32Y and 32Z are provided in holes formed by the first and second partitions 36 and 38. At this time, holes provided with the first and second electrodes 34Y and 34Z are used as the discharge cells 40.

The conventional partition wall 42 is spaced apart from the upper substrate 10 by about 3 μm to 5 μm when the upper and lower substrates 10 and 18 are bonded. Therefore, a space (3 μm to 5 μm) is used as the exhaust passage between the partition 42 and the upper substrate 10 during the exhaust process. However, in the conventional PDP, since the exhaust process is performed using a narrow space (3 μm to 5 μm), considerable time is consumed during the exhaust process. In addition, even if the exhaust process is performed for a long time there is a problem that the panel is not sufficiently exhausted.

Accordingly, an object of the present invention relates to a plasma display panel which allows for smooth exhaust.

1 is a perspective view showing a conventional three-electrode AC surface discharge type plasma display panel.

FIG. 2 is a view showing an electrode structure of the plasma display panel shown in FIG.

3 illustrates a plasma display panel according to another conventional embodiment;

4 illustrates a partition of a plasma display panel applied to the structure of FIG. 3; FIG.

5 and 6 illustrate a plasma display panel according to an embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

10: upper substrate 12Y, 34Y, 52Y: first electrode

12Z, 34Z, 52Z: Second electrode 13Y, 13Z, 32Y, 32Z, 51Y, 51Z: Bus electrode

14,22 dielectric layer 16: protective film

18: lower substrate 20X, 30X, 62X: address electrode

24, 56, 58: bulkhead 26, 36, 38, 42: phosphor layer

40: discharge cell 54: pixel

60: exhaust passage

In order to achieve the above object, the plasma display panel of the present invention includes: a partition wall in which discharge cells are disposed in a delta type structure; An exhaust passage is formed between the barrier ribs in a direction crossing the address electrode, and the exhaust passage is provided in units of the pixel rows of 10 or less.

The exhaust passage is located at the boundary of the pixel rows.

A plurality of bus electrodes are formed in a direction crossing the address electrode, and a plurality of transparent electrodes extending from the bus electrodes to discharge cells.

The transparent electrode extending from the bus electrode overlapping the exhaust passage is formed longer than the transparent electrode extending from the bus electrode overlapping the partition wall.

Other objects and features of the present invention in addition to the above objects will become apparent from the description of the embodiments with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS. 5 to 6.

5 is a diagram illustrating a plasma display panel according to an exemplary embodiment of the present invention.

Referring to FIG. 5, in the PDP according to the embodiment of the present invention, discharge cells R, G, and B formed adjacent to each other up and down form one pixel row. In other words, the PDP according to the embodiment of the present invention has a delta structure in which an R subpixel (or discharge cell), a G subpixel, and a B subpixel, which are formed adjacent to each other up and down, form one pixel 54. Has

The PDP according to the embodiment of the present invention includes the address electrode 62X, the first and second bus electrodes 51Y and 51Z provided in the direction crossing the address electrode 62X, and the first bus electrode 51Y. The first electrode 52Y extending from the () and the second electrode 52Z extending from the second bus electrode 51Z.

The first electrode 52Y is alternately extended on the first and second sides of the first bus electrode 51Y. In other words, if the first electrode 52Y crossing the n-th address electrode 62X is extended on the first side of the first bus electrode 51Y, the first crossing point of the n + 1th address electrode 62X is crossed. The electrode 52Y extends on the second side of the first bus electrode 51Y.

Like the first electrode 52Y, the second electrode 52Z is formed to be alternately elongated on the first and second sides of the second bus electrode 51Z. At this time, the second electrode 52Z is formed to face the first electrode 52Y. In other words, if the first electrode 52Y crossing the n-th address electrode 62X extends from the first side of the first bus electrode 51Y, the second electrode crossing the n-th address electrode 62X ( 52Z extends on the second side of the second bus electrode 51Z.

Meanwhile, the partition wall according to the embodiment of the present invention is parallel with the address electrodes 62X between the first partition walls 56 and the plurality of first partition walls 56 formed parallel to the bus electrodes 51Y and 51Z. The second partition 58 is formed to be formed. The partition wall according to the embodiment of the present invention is provided in pixel rows. In other words, the partition wall is formed by a predetermined interval in pixel row units.

Therefore, the exhaust passages 60 having a predetermined interval are formed between the partition walls in the pixel row units. Such exhaust passage 60 provides a passage through which gas and / or air can move during the exhaust process of the PDP. Therefore, according to the PDP according to the embodiment of the present invention, the exhaust process time can be shortened. In addition, sufficient exhaust can be performed in a short time.

Meanwhile, in FIG. 5, the first bus electrode 51Y is formed to overlap the first partition wall 56, and the second bus electrode 51Z is installed to overlap the exhaust passage 60. Therefore, the second electrode 52Z extending from the second bus electrode 51Z is formed longer than the first electrode 52Z so that the same area as that of the first electrode 52Z can be included in the discharge cell.

Meanwhile, in the embodiment of the present invention, the second bus electrode 51Z may be formed to overlap the first partition wall 56, and the first bus electrode 51Y may be installed to overlap the exhaust passage 60. When installed in this way, the first electrode 52Y is formed longer than the second electrode 52Z.

In addition, the exhaust passage 60 of the present invention may be installed in units of 10 or less pixel rows. In other words, the exhaust passage 60 of the present invention may be provided every two pixel rows as shown in FIG.

As described above, according to the plasma display panel according to the present invention, exhaust passages are provided on the partition walls in pixel rows so as to shorten the exhaust process time and to perform sufficient exhaust in a short time.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (5)

A delta having an address electrode and having a plurality of discharge cells arranged up and down adjacent to each other form a pixel row, and the red, green and blue discharge cells arranged up and down adjacent to each other to form one pixel. A plasma display panel having a structure; A partition wall formed to arrange the discharge cells in the delta structure; An exhaust passage formed between the barrier ribs in a direction crossing the address electrode; And the exhaust passage is provided in units of the ten or fewer pixel rows. The method of claim 1, And the exhaust passage is located at a boundary of the pixel rows. delete The method of claim 1, A plurality of bus electrodes formed in a direction crossing the address electrodes; And a plurality of transparent electrodes extending from the bus electrode to the discharge cells. The method of claim 4, wherein And the transparent electrode extending from the bus electrode overlapping the exhaust passage is longer than the transparent electrode extending from the bus electrode overlapping the partition wall.