Abstract:
The present invention relates to a plasma display panel, more particularly to a plasma display panel including an address electrode. A plasma display panel according to the present invention comprises a scan electrode comprising at least one a first hole disposed in the area protruding to the center of a discharge cell; a sustain electrode comprising at least one a second hole disposed in the area protruding to the center of a discharge cell; and an address electrode comprising a third hole formed corresponding to at least one of the first hole or the second hole. The present invention implements an address electrode corresponding to a transparent electrode to enlarge the overlapping size between the two electrodes for improving jitter characteristic and providing two pad transparent electrode having a high efficiency.

Description:
[0001]     This Nonprovisional application claims priority under 35 U.S.C. § 119(a) on Patent Application No. 10-2004-0075693 filed in Korea on Sep. 21, 2004, the entire contents of which are hereby incorporated by reference.  
       BACKGROUND OF THE INVENTION  
       [0002]     1. Field of the Invention  
         [0003]     The present invention relates to a plasma display panel, more particularly to a plasma display panel including an address electrode.  
         [0004]     2. Description of the Background Art  
         [0005]     A plasma display panel (PDP) emits light from a fluorescent body by ultraviolet (UV) rays of 147 nm generated when an inactive mixed gas such as He+Xe, Ne+Xe, or He+Xe+Ne is discharged to display images comprising characters and graphics.  
         [0006]      FIG. 1  is a perspective view representing the structure of a plasma display panel of the related art. As shown in  FIG. 1 , the plasma display panel of related art comprises an upper substrate  10  where a scan electrode  11  and a sustain electrode  12  are formed, and comprises a lower substrate  20  where an address electrode  22  is formed.  
         [0007]     Both of the scan electrode  11  and the sustain electrode  12  comprise transparent electrodes  11   a,    12   a  and bus electrodes  11   b,    12   b.  Transparent electrodes  11   a,    12   a  are made of Indium-Tin-Oxide ITO. Bus electrodes  11   b,    12   b  are made of a metal to reduce resistance.  
         [0008]     An upper dielectric layer  13   a  and a protection layer  14  are accumulated on the upper substrate  10  where a scan electrode  11  and a sustain electrode  12  are formed.  
         [0009]     Wall charges generated by the plasma discharge are accumulated on the upper dielectric layer  13   a.  The protection layer  14  prevents the upper dielectric layer  13   a  from being damaged by sputtering generated during plasma discharge and improves the efficiency of emitting secondary electrons. MgO is commonly used as the protection layer  14 .  
         [0010]     A lower dielectric layer  13   b  and a partition wall  21  are formed on the lower substrate  20  where the address electrode X  22  is formed. The surfaces of the lower dielectric layer  13   b  and a partition wall  21  are coated with a fluorescent body layer  23 .  
         [0011]     The address electrode  22  is formed to intersect the scan electrode  11  and the sustain electrode  12 . The partition wall  21  is formed to run parallel with the address electrode  22  to prevent the UV rays and the visible rays generated by discharge from leaking to an adjacent discharge cell.  
         [0012]     The fluorescent body layer  23  is excited by the UV rays generated during plasma discharge to generate any one visible ray among red, green, and blue visible rays. An inactive mixed gas is implanted into a discharge space of a discharge cell provided between the upper and lower substrates  10 ,  20  and the partition wall  21 .  
         [0013]      FIG. 2  is a plane figure representing the electrode structure of a plasma display panel of the related art. As shown in  FIG. 2 , the plasma display panel of the related art comprises a first bus electrode  100 , a second bus electrode  170 , a first transparent electrode  110 , a second transparent electrode  140  and an address electrode  120 . The area of the first transparent electrode  110  and the second transparent electrode  140  which are adjacent to a discharge gap  130  is still maintained, while a part of the area of the first transparent electrode  110  and the second transparent electrode  140  which are adjacent to the first bus electrode  100  and the second bus electrode  170  is removed. As a result, the discharge efficiency will be increased with a stable firing voltage.  
         [0014]     However, the overlapping size between the area of the address electrode  120  and the area of the first transparent electrode  110  and the second transparent electrode  140  having the structure described above decreases. In other words, the overlapping size between the area of the address electrode  120  and the area of the first transparent electrode  110  and the second transparent electrode  140  decreases, because the width of the address electrode  120  is similar to the width of a hole formed in the first transparent electrode  110  and the second transparent electrode  140 . As described above, in the plasma display panel of the related art, as the overlapping size between the area of the address electrode  120  and the area of the first transparent electrode  110  and the second transparent electrode  140  becomes smaller, there is a problem in that jitter characteristic decreases resulting in the inadequate performance of addressing.  
       SUMMARY OF THE INVENTION  
       [0015]     Accordingly, an object of the present invention is to solve at least the problems and disadvantages of the background art.  
         [0016]     The object of the present invention is to provide a plasma display panel comprising an electrode having the structure capable of increasing a discharge efficiency and enlarging the overlapping size between a transparent electrode and an address electrode.  
         [0017]     A plasma display panel according to the present invention comprises a scan electrode comprising at least one first hole disposed in the area protruding to the center of a discharge cell; a sustain electrode comprising at least one second hole disposed in the area protruding to the center of a discharge cell; and an address electrode comprising a third hole formed corresponding to at least one of the first hole or the second hole.  
         [0018]     A plasma display panel according to the present invention comprises a scan electrode comprising at least one first hole disposed in the area protruding to the center of a discharge cell; a sustain electrode comprising at least one second hole disposed in the area protruding to the center of a discharge cell; and an address electrode comprising a third hole formed corresponding to at least one of the first hole or the second hole, wherein the width of the address electrode is greater than the width of the first hole and the second hole.  
         [0019]     The present invention implements an address electrode corresponding to a transparent electrode to enlarge the overlapping size between the two electrodes for improving the jitter characteristic and providing two highly efficient transparent electrodes. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0020]     The invention will be described in detail with reference to the following drawings in which like numerals refer to like elements.  
         [0021]      FIG. 1  is a perspective view representing the structure of a plasma display panel of related art.  
         [0022]      FIG. 2  is a plane figure representing the electrode structure of a plasma display panel of related art  
         [0023]      FIG. 3  is a plane figure representing a plasma display panel according to a first embodiment of the present invention.  
         [0024]      FIG. 4  is a plane figure representing a plasma display panel according to a second embodiment of the present invention.  
         [0025]      FIG. 5  is a plane figure representing a plasma display panel according to a third embodiment of the present invention.  
         [0026]      FIG. 6  is a plane figure representing a plasma display panel according to a fourth embodiment of the present invention.  
         [0027]      FIG. 7  is a plane figure representing a plasma display panel according to a fifth embodiment of the present invention. 
     
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS  
       [0028]     Preferred embodiments of the present invention will be described in a more detailed manner with reference to the drawings.  
         [0029]     A plasma display panel according to the present invention comprises a scan electrode comprising at least one first hole disposed in the area protruding to the center of a discharge cell; a sustain electrode comprising at least one second hole disposed in the area protruding to the center of a discharge cell; and an address electrode comprising a third hole formed corresponding to at least one of the first hole or the second hole.  
         [0030]     The scan electrode is formed with a first bus electrode, a first transparent electrode connected with the first bus electrode to form the first hole, wherein the sustain electrode is formed with a second bus electrode, a second transparent electrode connected with the second bus electrode to form the second hole.  
         [0031]     The address electrode comprises a third hole separated corresponding to the first hole and the second hole.  
         [0032]     The address electrode comprises a third hole formed as one hole corresponding to the first hole and the second hole.  
         [0033]     The address electrode comprises the third hole separated corresponding to the first hole and the second hole, wherein the width of non-discharge gap area is greater than the width of the discharge gap area formed by the scan electrode and the sustain electrode.  
         [0034]     The address electrode comprises the third hole formed as one hole corresponding to the first hole and the second hole, wherein the width of non-discharge gap area is greater than the width of the discharge gap area formed by the scan electrode and the sustain electrode.  
         [0035]     The width of the address electrode is greater than the width of the first hole and the second hole.  
         [0036]     A plasma display panel according to the present invention comprises a scan electrode comprising at least one first hole disposed in the area protruding to the center of a discharge cell; a sustain electrode comprising at least one second hole disposed in the area protruding to the center of a discharge cell; and an address electrode comprising a third hole formed corresponding to at least one of the first hole or the second hole, wherein the width of the address electrode is greater than the width of the first hole and the second hole.  
         [0037]     The scan electrode is formed with a first bus electrode, a first transparent electrode connected with the first bus electrode to form the first hole, while the sustain electrode is formed with a second bus electrode, a second transparent electrode connected with the second bus electrode to form the second hole.  
         [0038]     The address electrode comprises a third hole separated corresponding to the first hole and the second hole.  
         [0039]     The address electrode comprises a third hole formed as one hole corresponding to the first hole and the second hole.  
         [0040]     The address electrode comprises the third hole separated corresponding to the first hole and the second hole, wherein the width of non-discharge gap area is greater than the width of the discharge gap area formed by the scan electrode and the sustain electrode.  
         [0041]     The address electrode comprises the third hole formed as one hole corresponding to the first hole and the second hole, wherein the width of non-discharge gap area is greater than the width of the discharge gap area formed by the scan electrode and the sustain electrode.  
         [0042]     Hereinafter, the embodiments of the invention will be described with reference to the following drawings  
       A First Embodiment  
       [0043]      FIG. 3  is a plane figure representing a plasma display panel according to a first embodiment of the present invention. As shown in  FIG. 3 , a plasma display panel according to the first embodiment of the present invention includes a scan electrode  310 , a sustain electrode  330  and an address electrode  350 .  
         [0044]     The scan electrode  310  comprises at least one first hole  315  disposed in the area protruding to the center of a discharge cell. The scan electrode  310  comprises a first bus electrode  311 , a first transparent electrode  313  connected with the first bus electrode  311  to form the first hole  315 .  
         [0045]     The sustain electrode  330  comprises at least one second hole  335  disposed in the area protruding to the center of a discharge cell. The sustain electrode  330  comprises a second bus electrode  331 , a second transparent electrode  333  connected with the second bus electrode  331  to form the second hole  335 .  
         [0046]     The address electrode  350  comprises a third hole  355  formed corresponding to at least one of the first hole  315  or the second hole  335 . The shape of the address electrode  350  is represented in the right side of  FIG. 3 . The address electrode  350  comprises the third hole  355  separated corresponding to the first hole  315  and the second hole  335 . It is preferable that the width of the address electrode  350  w 2  is greater than the width of the first hole  315  and the second hole  335 .  
         [0047]     Accordingly, the plasma display panel according to the first embodiment of the present invention improves a discharge efficiency and enlarges the overlapping size between the electrodes to improve the jitter characteristic and to improve the performance of addressing.  
       A Second Embodiment  
       [0048]      FIG. 4  is a plane figure representing a plasma display panel according to a second embodiment of the present invention. As shown in  FIG. 4 , a plasma display panel according to the second embodiment of the present invention includes a scan electrode  310 , a sustain electrode  330  and an address electrode  350 .  
         [0049]     The scan electrode  310  comprises at least one first hole  315  disposed in the area protruding to the center of a discharge cell. The scan electrode  310  comprises a first bus electrode  311 , a first transparent electrode  313  connected with the first bus electrode  311  to form the first hole  315 .  
         [0050]     The sustain electrode  330  comprises at least one second hole  335  disposed in the area protruding to the center of a discharge cell. The sustain electrode  330  comprises a second bus electrode  331 , a second transparent electrode  333  connected with the second bus electrode  331  to form the second hole  335 .  
         [0051]     The address electrode  350  comprises a third hole  355  formed corresponding to at least one of the first hole  315  or the second hole  335 . The shape of the address electrode  350  is represented in the right side of  FIG. 4 . The address electrode  350  comprises the third hole  355  formed as one hole corresponding to the first hole  315  and the second hole  335 . It is preferable that the width of the address electrode  350  w 2  is greater than the width of the first hole  315  and the second hole  335 .  
         [0052]     Accordingly, the plasma display panel according to the second embodiment of the present invention improves the discharge efficiency and enlarges the overlapping size between the electrodes to improve the jitter characteristic and to improve the performance of addressing.  
       A Third Embodiment  
       [0053]      FIG. 5  is a plane figure representing a plasma display panel according to a third embodiment of the present invention. As shown in  FIG. 5 , a plasma display panel according to the third embodiment of the present invention includes a scan electrode  310 , a sustain electrode  330  and an address electrode  350 .  
         [0054]     The scan electrode  310  comprises at least one first hole  315  disposed in the area protruding to the center of a discharge cell. The scan electrode  310  comprises a first bus electrode  311 , a first transparent electrode  313  connected with the first bus electrode  311  to form the first hole  315 .  
         [0055]     The sustain electrode  330  comprises at least one second hole  335  disposed in the area protruding to the center of a discharge cell. The sustain electrode  330  comprises a second bus electrode  331 , a second transparent electrode  333  connected with the second bus electrode  331  to form the second hole  335 .  
         [0056]     The address electrode  350  comprises a third hole  355  formed corresponding to at least one of the first hole  315  or the second hole  335 . The shape of the address electrode  350  is represented in the right side of  FIG. 5 . The address electrode  350  comprises the third hole  355  separated corresponding to the first hole  315  and the second hole  335 . It is preferable that the width w 2  of non-discharge gap area is greater than the width w 1  of the discharge gap  370  area of the address electrode  350 . It is preferable that the width of the address electrode  350  w 2  is greater than the width of the first hole  315  and the second hole  335 .  
         [0057]     Accordingly, the plasma display panel according to the third embodiment of the present invention improves the discharge efficiency and enlarges the overlapping size between the electrodes to improve the jitter characteristic and to improve the performance of addressing.  
       A Fourth Embodiment  
       [0058]      FIG. 6  is a plane figure representing a plasma display panel according to a fourth embodiment of the present invention. As shown in  FIG. 6 , a plasma display panel according to the fourth embodiment of the present invention includes a scan electrode  310 , a sustain electrode  330  and an address electrode  350 .  
         [0059]     The scan electrode  310  comprises at least one first hole  315  disposed in the area protruding to the center of a discharge cell. The scan electrode  310  comprises a first bus electrode  311 , a first transparent electrode  313  connected with the first bus electrode  311  to form the first hole  315 .  
         [0060]     The sustain electrode  330  comprises at least one second hole  335  disposed in the area protruding to the center of a discharge cell. The sustain electrode  330  comprises a second bus electrode  331 , a second transparent electrode  333  connected with the second bus electrode  331  to form the second hole  335 .  
         [0061]     The address electrode  350  comprises a third hole  355  formed corresponding to at least one of the first hole  315  or the second hole  335 . The shape of the address electrode  350  is represented in the right side of  FIG. 6 . The address electrode  350  comprises the third hole  355  formed as one hole corresponding to the first hole  315  and the second hole  335 . It is preferable that the width w 2  of non-discharge gap area is greater than the width w 1  of the discharge gap  370  area of the address electrode  350 . It is preferable that the width of the address electrode  350  w 2  is greater than the width of the first hole  315  and the second hole  335 .  
         [0062]     Accordingly, the plasma display panel according to the fourth embodiment of the present invention improves the discharge efficiency and enlarges the overlapping size between the electrodes to improve the jitter characteristic and to improve the performance of addressing.  
       A Fifth Embodiment  
       [0063]      FIG. 7  is a plane figure representing a plasma display panel according to a fifth embodiment of the present invention. As shown in  FIG. 7 , a plasma display panel according to the fifth embodiment of the present invention includes a scan electrode  310 , a sustain electrode  330  and an address electrode  350 .  
         [0064]     The scan electrode  310  comprises at least two first holes  315  disposed in the area protruding to the center of a discharge cell. In other words, the first hole  315  of the fifth embodiment is plural. The scan electrode  310  comprises a first bus electrode  311 , a first transparent electrode  313  connected with the first bus electrode  311  to form the first hole  315 .  
         [0065]     The sustain electrode  330  comprises at least two a second holes  335  disposed in the area protruding to the center of a discharge cell. In other words, the first hole  315  of the fifth embodiment is plural. The sustain electrode  330  comprises a second bus electrode  331 , a second transparent electrode  333  connected with the second bus electrode  331  to form the second hole  335 .  
         [0066]     The address electrode  350  comprises a third hole  355  formed corresponding to at least one of the first hole  315  or the second hole  335 . The shape of the address electrode  350  is represented in the right side of  FIG. 7 . The address electrode  350  comprises the third hole  355  separated corresponding to the first hole  315  and the second hole  335 . It is preferable that the width of the address electrode  350  w 2  is greater than the width of the first hole  315  and the second hole  335 .  
         [0067]     Accordingly, the plasma display panel according to the fifth embodiment of the present invention improves the discharge efficiency and enlarges the overlapping size between the electrodes to improve the jitter characteristic and to improve the performance of addressing.  
         [0068]     The invention being thus described may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.