KR100718998B1 - Plasma display panel - Google Patents

Abstract

The present invention relates to a barrier rib and an electrode structure in a plasma display panel.

Accordingly, the present invention provides a plasma display panel in which a plurality of discharge cells are formed in a delta structure and each discharge cell is composed of three subpixels. A bus electrode formed on the partition wall formed in parallel to partition the gap, a central bus electrode formed in parallel with the bus electrode at the center of the discharge cell, and a transparent electrode extending from the bus electrode and the central bus electrode so as to face each other at the center of the subpixel. It is characterized by including.

Plasma Display Panel, Bulkhead, Delta, Subpixel, Color Temperature, Bus Electrode, Transparent Electrode

Description

Plasma Display Panel {PLASMA DISPLAY PANEL}

1 is a perspective view schematically showing the structure of a conventional plasma display panel.

2 is a view showing a partition of a conventional stripe type plasma display panel.

3 is a view showing a partition of a conventional grid type plasma display panel.

4 is a view illustrating a partition of a conventional delta plasma display panel.

5 is a view showing the partition and electrode structure of the plasma display panel having a delta-type partition structure according to an embodiment of the present invention.

FIG. 6 is a view illustrating a barrier rib and an electrode structure of a plasma display panel having a bent center bus electrode according to another exemplary embodiment of the present invention. FIG.

FIG. 7 is a view illustrating barrier ribs and electrode structures of plasma display panels having different shapes of transparent electrodes according to another exemplary embodiment of the present invention.

The present invention relates to an AC plasma display panel (hereinafter, referred to as a 'PDP'). More specifically, one pixel is delta type, and each subpixel is a PDP having a polygonal partition structure. And a PDP having an effect of compensating the structural strength and color temperature of the panel.

1 is a perspective view showing the structure of a general plasma display panel.

As shown in FIG. 1, a plasma display panel includes a front substrate in which a plurality of sustain electrode pairs formed by pairing a scan electrode 102 and a sustain electrode 103 are formed on a front glass 101, which is a display surface on which an image is displayed. The rear substrate 110 having the plurality of address electrodes 113 arranged to intersect the plurality of sustain electrode pairs on the back glass 111 forming the back surface 100 and the rear surface is coupled in parallel with a predetermined distance therebetween. .

The front substrate 100 is made of a scan electrode 102 and a sustain electrode 103, that is, a transparent electrode (a) formed of a transparent ITO material and a metal material to mutually discharge and maintain light emission of the cells in one discharge cell. The scan electrode 102 and the sustain electrode 103 provided as the bus electrode b are included in pairs. The scan electrode 102 and the sustain electrode 103 are covered by one or more upper dielectric layers 104 that limit the discharge current and insulate the electrode pairs, and to facilitate the discharge conditions on the upper dielectric layer 104 top surface. A protective layer 105 on which magnesium oxide (MgO) is deposited is formed.

The rear substrate 110 is arranged in such a manner that a plurality of discharge spaces, that is, barrier ribs 112 of a stripe type (or well type) for forming discharge cells are maintained in parallel. In addition, a plurality of address electrodes 113 for performing address discharge to generate vacuum ultraviolet rays are disposed in parallel with the partition wall 112. On the upper side of the rear substrate 110, R, G, and B phosphors 114 which emit visible light for image display during address discharge are coated. A lower dielectric layer 115 is formed between the address electrode 113 and the phosphor 114 to protect the address electrode 113.

FIG. 2 is a diagram illustrating a stripe-type barrier rib structure of a conventional plasma display panel.

Referring to FIG. 2, the partition wall is arranged in a stripe shape while being perpendicular to the sustain electrode formed of the bus electrode and the transparent electrode.

Such a stripe-type partition wall structure is a stripe-shaped partition wall structure, and the manufacturing process is simple. However, there is a problem that visible light generated at the time of discharge leaks in the stripe direction of the partition wall, and phosphor printing and exhausting are easy, but misdischarge and phosphor coating area affecting adjacent cells are small.

FIG. 3 is a view showing a grating-type partition wall structure of a conventional plasma display panel.

Referring to FIG. 3, the partition wall is arranged in a grid shape while being horizontal or vertical with a sustain electrode formed of a bus electrode and a transparent electrode.

Such a lattice-shaped partition wall structure can designate each color cell to improve luminance, block leakage light, and prevent crosstalk in all directions.

However, the lattice-shaped partition wall structure has a small influence of the adjacent cells and a large coating area of the phosphor, which can increase the brightness, but causes a problem of poor exhaust.

4 is a diagram illustrating a delta-type partition wall structure of a conventional plasma display panel.

Referring to FIG. 4, the delta-type barrier rib structure is formed in a stripe-type barrier rib structure and a well-type barrier rib structure. To solve the problem, one discharge cell 100 is surrounded by a six-sided structure is connected to a narrow channel (401). In this structure, one discharge cell 100 is surrounded by six surfaces to improve luminance due to an increase in the coating area and the reflectance of the phosphor. Each discharge cell 100 is connected to a narrow channel 401 to exhaust the Gas injection can be made smoothly.

However, in the conventional plasma display panel, since the scan electrode 402 and the sustain electrode 403 are symmetrically located in all the discharge cells 100, the bus electrodes 402b and 403b are centered on the transparent electrodes 402a and 403a. The light at the top and bottom of the cell is blocked by the bus electrodes 402b and 403b. Accordingly, there is a problem that black lines are generated in the directions of the bus electrodes 402b and 403b so that the luminance is reduced.

Accordingly, an object of the present invention is to provide a plasma display panel capable of improving the partition and electrode structures of the plasma display panel to improve luminance and luminous efficiency, and to improve color temperatures of R (red) and B (blue) subpixels. There is.

In order to achieve the above object, in the plasma display panel according to the present invention, in the plasma display panel in which a plurality of discharge cells are formed in a delta-type structure and each discharge cell is composed of three subpixels, the subpixels are divided into pentagonal shapes. A bus electrode formed on the partition wall formed parallel to partition the discharge cells located above and below, a central bus electrode formed parallel to the bus electrode at the center of the discharge cell, and a bus electrode facing each other at the center of the subpixel. And a transparent electrode extending from the central bus electrode.

Here, the partition wall may include a first partition wall formed parallel to each other to separate pixels positioned up and down, and a plurality of second partition walls and sub pixels extending into the pixel from the first partition wall to separate left and right sub pixels. And a third partition wall connecting the second partition walls to separate the delta structure.

In this case, the second partition wall has a size smaller than the distance from the first partition wall to the central bus electrode.

The bus electrode is formed on the first partition wall, and the transparent electrode becomes wider toward the center of the subpixel and has the same width near the center of the subpixel.

In addition, the transparent electrode is formed on the same line as the second partition wall.

In addition, the center bus electrode may be bent to correspond to the third partition at the center of the pixel, and may be formed flat at a portion where the second partition and the third partition are connected to each other.

In addition, the transparent electrode may be formed on the same line as the second partition wall, and may have different sizes and shapes of R (red), G (green), and B (blue).

Other objects and advantages other than the above object will become apparent from the description of the preferred embodiment of the present invention with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS. 5 to 7.

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

Referring to FIG. 5, a plasma display panel according to an exemplary embodiment of the present invention has a plurality of pixels having a delta structure, and each pixel has three subs of R (red), G (green), and B (blue). It consists of pixels.

The first barrier ribs 501a and 501b formed parallel to each other to separate discharge cells adjacent to each other are formed in a plurality of discharge cells extending from the first barrier ribs 501a and 501b into the discharge cells so as to form a delta structure. It is connected with the second partitions 506.

Here, the plurality of second partitions 506 are vertically connected to the first partitions 501a and 501b, and each of the aforementioned subpixels R (red), G (green), and B (blue) has a delta structure. It is connected with a plurality of third partitions 507 to separate. At this time, bus electrodes 503a and 503b are formed on the first partitions 501a and 501b in parallel with the first partitions 501a and 501b, and a central bus is parallel to the bus electrodes 503a and 503b in the center of the pixel. An electrode 504 is formed.

The second barrier ribs 506 are vertically connected to the first barrier ribs 501a and 501b and are formed in the direction of the central bus electrode 504 and have a size smaller than the distance to the central bus electrode 504. Accordingly, the third partition 507 forms a bent shape by connecting the second partitions 506 in a delta shape.

That is, in the discharge cell structure of the plasma display panel according to the present invention, a discharge cell is formed of a plurality of partitions, and in detail, one discharge cell is composed of three subpixels between two parallel partition walls 501a and 501b. Form a discharge cell.

The delta discharge cell has a shape in which each subpixel has a pentagon, and two bus electrodes 503a and 503b formed along two parallel first partition walls 501a and 501b and the center portion of the pixel. The central bus electrode 504 is formed in parallel with the two bus electrodes 503a and 503b.

In addition, the bus electrodes 503a and 503b and the transparent electrodes 505a and 505b extending from the center bus electrode 504 are formed in the center portion of the service pixel having a pentagon. In this case, the transparent electrodes 505a and 505b are preferably formed on the same line as the second partition 506.

The transparent electrodes 505a and 505b become wider toward the center of the subpixel, and face each other with the same width near the center of the subpixel.

As described above, when the PDP partition and the bus electrode are configured as in the temporary embodiment of the present invention, the coated area of the phosphor is increased and the barrier reflection is increased as compared with the conventional well-shaped partition structure in FIG. It is possible to improve and increase the mechanical strength due to the partition structure of the pentagonal subpixel.

In addition, compared to the delta partition structure of FIG. 4, the bus electrodes are formed along the first partition wall in parallel to solve the problem that the bus electrodes enter the discharge cell and the aperture ratio is reduced.

FIG. 6 is a diagram illustrating a barrier rib and an electrode structure of a plasma display panel having a bent center bus electrode according to another exemplary embodiment of the present invention.

Referring to FIG. 6, in the plasma display panel according to another embodiment of the present invention, a plurality of pixels are formed in a delta-type structure, and each pixel includes three subs of R (red), G (green), and B (blue). It consists of pixels.

The first barrier ribs 603a and 603b formed in parallel with each other to separate discharge cells adjacent to each other are formed in a plurality of discharge cells extending from the first barrier ribs 603a and 603b into the discharge cells so that the discharge cells form a delta structure. It is connected to the second partitions 606.

Here, the plurality of second partitions 606 are vertically connected to the first partitions 603a and 603b, and each of the aforementioned subpixels R (red), G (green), and B (blue) has a delta structure. It is connected with a plurality of third partitions 607 to separate. At this time, the bus electrodes 601a and 601b are formed on the first partitions 603a and 603b in parallel with the first partitions 603a and 603b, and the centers of the pixels are bent to correspond to the third partitions 607. Bus electrode 602 is formed.

The center bus electrode 602 is formed to correspond to the upper portion of the third partition 607 unlike the structure of the center bus electrode 504 of FIG. 5 described above. Accordingly, by forming the center bus electrode 602 to be bent, the aperture ratio can be increased by minimizing the center bus electrode 602 entering the discharge cell for the pentagonal subpixel.

In addition, the above-described second barrier ribs 606 are vertically connected to the first barrier ribs 603a and 603b and formed in the direction of the central bus electrode 602, and have a size smaller than the distance to the central bus electrode 602.

In addition, bus electrodes 601a and 601b and transparent electrodes 605a and 605b extending from the central bus electrode 602 are formed in the center portion of the service pixel to face each other. In this case, the transparent electrodes 605a and 605b are preferably formed on the same line as the second partition 606.

In addition, the widths of the transparent electrodes 605a and 605b become wider toward the center of the subpixel and face each other with the same width near the center of the subpixel.

On the other hand, FIG. 7 illustrates a transparent electrode having different sizes and shapes for each subpixel in the same barrier rib structure as in the other exemplary embodiment of FIG. 6.

FIG. 7 shows the area of the red (R), green (G), and B (blue) transparent electrodes having different sizes and shapes for the delta structure having the pentagonal subpixels shown in FIG. Form them differently.

Referring to FIG. 7, as shown in FIG. 6, the first partitions 703a and 703b formed in parallel to separate discharge cells adjacent to each other in the up and down directions have the first partitions 703a and 703b so that the discharge cells have a delta structure. Is connected to a plurality of second partitions 708 extending into the discharge cell.

Here, the plurality of second partitions 708 are vertically connected to the first partitions 703a and 703b, and each of the aforementioned subpixels R (red), G (green), and B (blue) has a delta structure. It is connected with a plurality of third partitions 709 to separate. At this time, the bus electrodes 701a and 701b are formed on the first partitions 703a and 703b in parallel with the first partitions 703a and 703b, and the centers of the pixels are bent to correspond to the third partition 709. Bus electrode 704 is formed.

The subpixels 702a, 702b, and 702c of R, G, and B in the pair of transparent electrodes facing each other at the bus electrodes 701a and 701b and the center bus electrode 704 and extending toward the center of each subpixel. Each of the transparent electrodes 705, 706, and 707 formed in the substrate has different sizes and shapes.

As a result, when the facing portion or the area of the transparent electrode is large, the discharge is easily performed to obtain high luminance. Therefore, the luminous efficiency of the phosphors is different for the R, G, and B cells, and thus the luminance of the R, G, and B phosphors can be adjusted without changing the structure of the panel by controlling the area or the area of the transparent electrode facing each other in each subpixel. The difference is easily compensated for, thereby making it easier to adjust the white balance, which is also effective in improving the color temperature.

The best embodiments have been disclosed in the drawings and specification above. Although specific terms have been used herein, they are used only for the purpose of describing the present invention and are not used to limit the scope of the present invention as defined in the meaning or claims. Accordingly, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom.

As described above, according to the structure of the plasma display panel according to the present invention, it is possible to increase the coating area of the phosphor and improve the decrease of the aperture ratio of the discharge cell to increase the luminance, and the mechanical emphasis is improved due to the polygonal structure. The luminance difference of the phosphors can be easily compensated for.

Claims (10)

In a plasma display panel in which a plurality of discharge cells are formed in a delta structure and each discharge cell is composed of three subpixels, A partition wall dividing the subpixel into a pentagonal shape; A bus electrode formed on a partition wall formed in parallel to partition discharge cells positioned up and down; A central bus electrode formed parallel to the bus electrode at a central portion of the discharge cell; And And a transparent electrode extending from the bus electrode and the center bus electrode so as to face each other at the center of the subpixel. The method of claim 1, The barrier rib may include: a first barrier rib formed in parallel with each other to separate pixels positioned up and down; A plurality of second partition walls extending into the pixel from the first partition wall to separate the left and right subpixels; And a third partition wall that connects the second partition walls to separate the subpixels into a delta structure. The method of claim 2, And the second partition wall has a size smaller than a distance from the first partition wall to the center bus electrode. The method of claim 2, And the bus electrode is formed on the first partition wall. The method of claim 1, And the transparent electrode becomes wider toward the center of the subpixel and has the same width near the center of the subpixel. The method of claim 2, And the transparent electrode is formed on the same line as the second partition wall. The method of claim 2, And the center bus electrode is bent to correspond to the third partition at the center of the pixel. The method of claim 2, And the center bus electrode is formed flat at a portion where the second and third partition walls are connected. delete The method of claim 1, And wherein the transparent electrodes have different sizes and shapes of R (red), G (green), and B (blue).

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