KR20090034685A - Plasma display apparatus - Google Patents
Plasma display apparatus Download PDFInfo
- Publication number
- KR20090034685A KR20090034685A KR1020070100075A KR20070100075A KR20090034685A KR 20090034685 A KR20090034685 A KR 20090034685A KR 1020070100075 A KR1020070100075 A KR 1020070100075A KR 20070100075 A KR20070100075 A KR 20070100075A KR 20090034685 A KR20090034685 A KR 20090034685A
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- KR
- South Korea
- Prior art keywords
- board
- sustain
- scan
- electrode
- plasma display
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
- H01J11/20—Constructional details
- H01J11/34—Vessels, containers or parts thereof, e.g. substrates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
- H01J11/20—Constructional details
- H01J11/46—Connecting or feeding means, e.g. leading-in conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
- H01J11/10—AC-PDPs with at least one main electrode being out of contact with the plasma
- H01J11/12—AC-PDPs with at least one main electrode being out of contact with the plasma with main electrodes provided on both sides of the discharge space
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2211/00—Plasma display panels with alternate current induction of the discharge, e.g. AC-PDPs
- H01J2211/20—Constructional details
- H01J2211/66—Cooling arrangements
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Control Of Gas Discharge Display Tubes (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention relates to a plasma display device.
A plasma display apparatus according to an embodiment of the present invention includes a plasma display panel including a front substrate having scan electrodes and sustain electrodes formed thereon, and a rear substrate having address electrodes disposed to intersect the scan electrodes and sustain electrodes; A heat dissipation frame disposed on a rear surface of the heat dissipation frame and a drive board disposed on a rear surface of the heat dissipation frame, wherein the drive board includes a scan board for supplying a drive signal to the scan electrode, a sustain board for supplying a drive signal to the sustain electrode, and an address; And a data board for supplying a driving signal to the electrodes, wherein the scan board and the sustain board are insulated from the heat dissipation frame, and the scan board and the sustain board are electrically connected by a ground line.
Plasma display device according to an embodiment of the present invention is disposed between the ground voltage source connected to the scan board and the sustain board and the ground voltage source connected to the data board so that the address electrode is floating (floating) during the sustain period, By suppressing discharge, there is an effect of improving driving efficiency and improving stability and reliability.
Description
The present invention relates to a plasma display device.
The plasma display apparatus may include a plasma display panel having electrodes formed thereon, and a driving board supplying driving signals to the electrodes of the plasma display panel.
In the plasma display panel, a phosphor layer is formed in a discharge cell divided by a partition, and a plurality of electrodes are formed.
When the drive signal is supplied to the electrode of the plasma display panel, the discharge is generated by the drive signal supplied in the discharge cell. Here, when discharged by a drive signal in the discharge cell, the discharge gas filled in the discharge cell generates vacuum ultraviolet rays, and the vacuum ultraviolet light emits the phosphor formed in the discharge cell to emit visible light. Generate. The visible light displays an image on the screen of the plasma display panel.
An embodiment of the present invention is to provide a plasma display device having a ground separation control unit to float the address electrode during the sustain period, thereby improving the driving efficiency by suppressing the opposite discharge, and improved stability and reliability The purpose is.
A plasma display apparatus according to an embodiment of the present invention includes a plasma display panel including a front substrate having scan electrodes and sustain electrodes formed thereon, and a rear substrate having address electrodes disposed to intersect the scan electrodes and sustain electrodes; A heat dissipation frame disposed on a rear surface of the heat dissipation frame and a drive board disposed on a rear surface of the heat dissipation frame, wherein the drive board includes a scan board for supplying a drive signal to the scan electrode, a sustain board for supplying a drive signal to the sustain electrode, and an address; And a data board for supplying a driving signal to the electrodes, wherein the scan board and the sustain board are insulated from the heat dissipation frame, and the scan board and the sustain board are electrically connected by a ground line.
In addition, the ground voltage of the scan board and the sustain board is different from the ground voltage of the heat radiation frame.
In addition, a ground separation control unit is further disposed between the scan board and the sustain board and the heat dissipation frame to connect the ground of the scan board and the sustain board to the ground of the heat dissipation frame.
In addition, an insulating layer is disposed between the scan board and the sustain board and the heat dissipation frame.
In addition, the plasma display device according to another embodiment of the present invention, the plasma display panel including a front substrate formed with the scan electrode and the sustain electrode, and a rear substrate formed with an address electrode disposed to cross the scan electrode and the sustain electrode, plasma A heat dissipation frame disposed on the back of the display panel and a drive board disposed on the back of the heat dissipation frame, wherein the drive board includes a scan board for supplying a drive signal to the scan electrode and a sustain board for supplying a drive signal to the sustain electrode. And a data board for supplying a drive signal to the address electrode, wherein the data board and the heat dissipation frame are insulated.
In addition, the ground voltage of the data board is different from the ground voltage of the heat radiation frame.
In addition, a ground separation controller is further disposed between the data board and the heat dissipation frame to connect the ground of the data board and the ground of the heat dissipation frame.
In addition, an insulating layer is disposed between the data board and the heat dissipation frame.
Plasma display device according to an embodiment of the present invention is disposed between the ground voltage source connected to the scan board and the sustain board and the ground voltage source connected to the data board so that the address electrode is floating (floating) during the sustain period, By suppressing discharge, there is an effect of improving driving efficiency and improving stability and reliability.
Hereinafter, a plasma display device according to the present invention will be described in detail with reference to the accompanying drawings.
1 is a view for explaining the configuration of a plasma display device according to an embodiment of the present invention.
Referring to FIG. 1, a plasma display apparatus according to the present invention includes a
The
Next, FIG. 2 is a diagram for describing a structure of a plasma display panel that may be included in a plasma display device according to an embodiment of the present invention.
Referring to FIG. 2, a plasma display panel that may be included in a plasma display device according to an embodiment of the present invention may include a
An upper
The upper
A
In addition, an electrode, for example, an address electrode 213 is disposed on the
On top of the lower
On the other hand, in the plasma display panel according to an embodiment of the present invention, the red (R), green (G), and blue (B) discharge cells may have substantially the same width, but the red (R), green (G), and The width of at least one of the blue (B) discharge cells may be different from that of the other discharge cells.
For example, the width of the red (R) discharge cell is the smallest, and the width of the green (G) and blue (B) discharge cells can be made larger than the width of the red (R) discharge cell. Here, the width of the green (G) discharge cell may be substantially the same as or different from the width of the blue (B) discharge cell.
The width of the
In addition, the plasma display panel according to the exemplary embodiment may not only have a structure of the
In the case of such a differential partition structure, the height of the
In addition, although the red (R), green (G), and blue (B) discharge cells are each shown and described as being arranged on the same line in FIG. 2, they may be arranged in other shapes. For example, a delta type arrangement in which red (R), green (G) and blue (B) discharge cells are arranged in a triangular shape is also possible. In addition, the shape of the discharge cell is not only rectangular but also various polygonal shapes such as pentagon and hexagon.
In addition, although only the case where the
The discharge cell partitioned by the
In addition, a
In addition, in addition to the red (R), green (G) and blue (B) phosphors, at least one of a white (W) or yellow (Yellow: Y) phosphor layer may be further disposed.
In addition, the thickness of the
In the above description, only one example of the plasma display panel according to an exemplary embodiment of the present invention is illustrated and described. However, the present invention is not limited to the plasma display panel having the above-described structure. For example, in the above description, only the case where the lower
In addition, a black matrix (not shown) may be further disposed on the
In addition, although the width and thickness of the address electrode 213 disposed on the
3A to 3B are views for explaining the insulating layer.
The
Such a ground line will be described in detail with reference to FIGS. 4A to 4B.
In addition, since the ground voltage source of the
In order to separate the ground voltage source, the
First, referring to FIG. 3A, the
Accordingly, the
Alternatively, in FIG. 3B, the
Accordingly, the
Here, in FIGS. 3A to 3B, the insulation layers 750 and 760 are disposed as a method of insulating the
4A to 4B are diagrams for explaining an example of the configuration of the plasma display device according to the present invention.
First, referring to FIG. 4A, the plasma display apparatus according to the present invention includes a
In addition, the plasma display device may further include a
The
The
The sustain
The
The
The
Here, the
Next, in FIG. 4B, unlike the
The ground lines 370 and 371 of FIGS. 4A to 4B show an example of connecting the
5 is a diagram for explaining a ground separation controller.
Referring to FIG. 5, the plasma display apparatus further includes a
The
One end of the
Here, the
The voltage of the first
When the
In the plasma display apparatus according to the exemplary embodiment of the present invention, the
On the other hand, in the sustain period, the
In this case, the
The floating state of the address electrode X in this sustain period will be described in more detail with reference to FIGS. 6A to 6B.
6A to 6B are views for explaining an example of the operation of the plasma display device according to an embodiment of the present invention. 6A to 6B illustrate an example of a method of operating a plasma display panel according to an embodiment of the present invention. The present invention is not limited to FIGS. 6A to 6B, but an embodiment of the present invention. The method of operating the plasma display panel may be variously changed.
First, referring to FIG. 6A, a reset signal may be supplied to a scan electrode in a reset period for initialization. The reset signal may include a ramp-up signal and a ramp-down signal.
For example, in the set-up period, the voltage gradually increases from the second voltage V2 to the third voltage V3 after the voltage rises rapidly from the first voltage V1 to the second voltage V2 with the scan electrode. Rising rising ramp signals may be supplied. Here, the first voltage V1 may be a voltage of the ground level GND.
In this setup period, a weak dark discharge, that is, setup discharge, occurs in the discharge cell by the rising ramp signal. By this setup discharge, some wall charges can be accumulated in the discharge cells.
In the set-down period after the set-up period, the rising ramp signal and the falling ramp signal in the opposite polarity direction may be supplied to the scan electrode after the rising ramp signal.
Here, the falling ramp signal may gradually fall from the peak voltage of the rising ramp signal, that is, the fourth voltage V4 lower than the third voltage V3 to the fifth voltage V5.
As the falling ramp signal is supplied, a weak erase discharge, that is, a setdown discharge, occurs in the discharge cell. By this set-down discharge, wall charges such that address discharge can be stably generated in the discharge cells remain uniformly.
In the address period after the reset period, a scan bias signal that substantially maintains the lowest voltage of the falling ramp signal, that is, a voltage higher than the fifth voltage V5, for example, the sixth voltage V6, is supplied to the scan electrode.
In addition, a scan signal falling from the scan bias signal may be supplied to the scan electrode.
Meanwhile, the pulse width of the scan signal Scan supplied to the scan electrode in the address period of at least one subfield may be different from the pulse width of the scan signal of another subfield. For example, the width of the scan signal in the subfield located later in time may be smaller than the width of the scan signal in the preceding subfield. In addition, the reduction of the scan signal width according to the arrangement order of the subfields can be made gradually, such as 2.6 Hz (microseconds), 2.3 Hz, 2.1 Hz, 1.9 Hz, or 2.6 Hz, 2.3 Hz, 2.3 Hz, 2.1 Hz. .... 1.9 ㎲, 1.9 ㎲ and so on.
As such, when the scan signal is supplied to the scan electrode, the data signal may be supplied to the address electrode corresponding to the scan signal.
When the scan signal and the data signal are supplied, an address discharge may be generated in the discharge cell to which the data signal is supplied while the voltage difference between the scan signal and the data signal and the wall voltage generated by the wall charges generated in the reset period are added. .
Here, the sustain bias signal may be supplied to the sustain electrode in order to prevent the address discharge from becoming unstable due to the interference of the sustain electrode in the address period.
The sustain bias signal can keep the sustain bias voltage Vz smaller than the voltage of the sustain signal supplied in the sustain period and larger than the voltage of the ground level GND.
In the above-described reset period and the address period, as described above with reference to FIG. 5, the
Subsequently, in the sustain period for displaying an image, a sustain signal may be supplied to at least one of the scan electrode and the sustain electrode. For example, a sustain signal may be alternately supplied to the scan electrode and the sustain electrode.
When such a sustain signal is supplied, the discharge cell selected by the address discharge is added with the wall voltage in the discharge cell and the sustain voltage Vs of the sustain signal, and a sustain discharge, i.e., display between the scan electrode and the sustain electrode when the sustain signal is supplied. Discharge may occur.
In this case, the
In addition, the ground separation controller is turned off so that the first ground voltage and the second ground voltage are separated while the sustain signal is supplied to the scan electrode.
Accordingly, the voltage of the first ground voltage source and the voltage level of the second ground voltage source may be different, thereby inducing the address electrode to float.
As such, the voltage of the address electrode during the sustain period during which the sustain signal is supplied to the scan electrode is different from the voltage of the sustain signal of the scan electrode in a floating state, and the period may be substantially the same.
Next, FIG. 6B is a single sustain driving method, and the reset period is the same as that of FIG. 6A, and voltages supplied to the address period and the sustain period may be different.
In the address period, the signals supplied to the address electrode and the scan electrode are the same as in FIG. 6A. However, unlike the case in FIG. 6A, the sustain electrode is not supplied with the sustain bias signal and the ground voltage is supplied to maintain the ground level at the ground (GND) level. have.
Subsequently, in the sustain period for displaying an image, a sustain signal may be supplied to the scan electrode, and a ground voltage may be supplied to the sustain electrode to be maintained at the ground (GND) level.
When such a sustain signal is supplied, the discharge cell selected by the address discharge is added with the wall voltage in the discharge cell and the sustain voltage Vs of the sustain signal, and a sustain discharge, i.e., display between the scan electrode and the sustain electrode when the sustain signal is supplied. Discharge may occur.
In the single sustain driving method, as in FIG. 6A, the
During the sustain period of the single sustain driving method, the scan electrode is supplied with a sustain signal in which the positive sustain voltage Vs and the negative sustain voltage −Vs are alternately repeated.
Here, the ground electrode GND is supplied to the sustain electrode while the sustain signal is supplied to the scan electrode.
In addition, the ground separation controller is turned off so that the first ground voltage and the second ground voltage are separated while the sustain signal is supplied to the scan electrode.
Accordingly, the voltage of the first ground voltage source and the voltage level of the second ground voltage source may be different, thereby inducing the address electrode to float.
As such, the voltage of the address electrode during the sustain period during which the sustain signal is supplied to the scan electrode is different from the voltage of the sustain signal of the scan electrode in a floating state, and the period may be substantially the same.
As shown in FIGS. 6A to 6B, the discharge cells are repeatedly discharged during the sustain period by causing a signal similar to the sustain signal supplied to the scan electrode Y to be implemented in the floating state during the sustain period. By suppressing the counter-discharge generated when to cause the surface discharge can be effective.
Such counter discharge and surface discharge will be described in more detail with reference to FIGS. 7A to 7C.
Next, FIGS. 7A to 7C are views for explaining surface discharge and counter discharge.
If a sustain signal is supplied to the
In this case, deterioration of the phosphor layer (not shown) disposed on the
In addition, when a path of discharge generated between the
On the other hand, when the
Then, as shown in FIG. 7B, a path of the discharge generated between the
In more detail, when the voltage of the
Similarly, the counter discharge is reduced even when the voltage between the
In addition, as shown in FIG. 7C, when the distance d2 between the
In the large-inch plasma display device, the width of the cell is wider than that of the small-inch, and thus, the distance between the
As such, the technical configuration of the present invention described above can be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention.
Therefore, the exemplary embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the foregoing detailed description, and the meaning and scope of the claims are as follows. And all changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.
1 is a view for explaining the configuration of a plasma display device according to an embodiment of the present invention.
2 is a view for explaining the structure of a plasma display panel that can be included in a plasma display device according to an embodiment of the present invention.
3A to 3B are views for explaining the insulating layer.
4A to 4B are diagrams for explaining an example of the configuration of the plasma display device according to the present invention;
5 is a diagram for explaining a ground separation control unit;
6A to 6B are views for explaining an example of the operation of the plasma display device according to one embodiment of the present invention;
7A to 7C are diagrams for explaining surface discharge and counter discharge.
<Explanation of symbols for the main parts of the drawings>
100: plasma display panel 110: heat dissipation frame
120a, 120b, 120c: drive board
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020070100075A KR20090034685A (en) | 2007-10-04 | 2007-10-04 | Plasma display apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020070100075A KR20090034685A (en) | 2007-10-04 | 2007-10-04 | Plasma display apparatus |
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KR20090034685A true KR20090034685A (en) | 2009-04-08 |
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Family Applications (1)
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KR1020070100075A KR20090034685A (en) | 2007-10-04 | 2007-10-04 | Plasma display apparatus |
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2007
- 2007-10-04 KR KR1020070100075A patent/KR20090034685A/en not_active Application Discontinuation
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