CN1300820C - Plasma display panel structure - Google Patents
Plasma display panel structure Download PDFInfo
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- CN1300820C CN1300820C CNB2003101204722A CN200310120472A CN1300820C CN 1300820 C CN1300820 C CN 1300820C CN B2003101204722 A CNB2003101204722 A CN B2003101204722A CN 200310120472 A CN200310120472 A CN 200310120472A CN 1300820 C CN1300820 C CN 1300820C
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Abstract
The present invention relates to a structure of a plasma display panel, which comprises a front plate, a backplate, a sustaining electrode, a scanning electrode, a separating wall and an address electrode, wherein the sustaining electrode is arranged on the front plate and extends towards a first direction; the scanning electrode is arranged on the front plate and extends towards the first direction; the separating wall is arranged on the backplate and extends towards a second direction which is vertical with the first direction, and the separating wall crosses over the lower part of the sustaining electrode and the scanning electrode; the address electrode is arranged on the backplate; the address electrode comprises a first part which extends the second direction and is arranged below the separating wall and a second part which is electrically connected with the first part and is positioned below the sustaining electrode in a protrudent mode.
Description
The application be that September 27 calendar year 2001, application number are 01140953.3 the applying date, denomination of invention divides an application for the patent application of " panel structure of plasma display and driving method thereof ".
Technical field
The present invention relates to a kind of plasma display technology, particularly a kind of panel structure of plasma display that can strengthen display brightness by the space discharge effect.
Background technology
Plasma display mainly is to utilize the mode of electrode discharge stored charge to show, owing to have large-screen, high power capacity and can show full-color (full-color) image, is the flat-panel screens of following tool potentiality.
Fig. 1 represents the side cutaway view of the display cell structure of general plasma display, and wherein plasma display is to adopt three-electrode structure.As shown in the figure, plasma display mainly is made up of two glass substrates 1 and 7, and wherein general glass substrate 1 is referred to as header board, and glass substrate 7 is referred to as the back plate.Cavity between glass substrate 1 and 7 is then inserted inert gas, as Ne, Xe.Be provided with two electrodes on glass substrate 1, comprise and keep electrode X and scan electrode Yi, both are parallel to each other.Keeping then be covered on electrode X and the scan electrode Yi one dielectric layer 3 and diaphragm 5.On the other hand, bit address electrode (address electrodes) Ai is set then on glass substrate 7, it is the relation that is perpendicular to one another with keeping electrode X and keep on the bearing of trend of electrode Yi.Isolated with dividing wall (rib) 8 around each unit.Between 8 of dividing walls fluorescent material 9 is arranged, be used in discharge process luminous, between fluorescent material 9 and the address electrode Ai then at interval with dielectric layer 4.
Fig. 2 represents the top view of the display cell structure of general plasma display.As shown in the figure, keep electrode X and scan electrode Yi and utilize transparency electrode to form, both are parallel direction, are positioned at former board part; Address electrode Ai then strides across with vertical direction and keeps electrode X and scan electrode Yi, is positioned at the back plate portion.Cut apart the zone that wall 8 is surrounded, then form display unit 10.
Fig. 3 represents the calcspar of the plasma scope that general plasma display constitutes.As shown in the figure, plasma display 100 is by scan electrode Y1～Yn parallel to each other and keeps electrode X, and drives across the A1 of the address electrode on it～Am.Except comprising plasma display 100, still comprise control circuit 110, Y scanner driver 112, X common actuator 114 and address driver 116 in the plasma scope.Wherein, control circuit 110 is according to clock signal C LOCK, video data signal DATA, vertical synchronizing signal VSYNC and horizontal-drive signal HSYNC that the outside provided, produce video data and scan clock, deliver to respectively in the corresponding driver, use making it produce the needed signal of each electrode of driving.
Fig. 4 represents that then known technology drives the sequential chart that plasma display shows a frame.Each frame can be divided into a plurality of subframes, and for example in Fig. 3, each frame is to be distinguished into 8 subframe SF1～SF8.Each subframe then is to be used for all showing corresponding GTG (gray scale) on the scan lines, when for example desire shows 256 rank GTGs (corresponding to 8), just can use 8 subframes to handle respectively.In addition, each subframe then is made up of three operating periods, be respectively RS1～RS8 during the replacement, write during (address period) AR1～AR8 and keep during (sustain period) SS1～SS8.
During the replacement RS1～RS8 be when being used for removing previous subframe and showing remaining electric charge.AR1～AR8 then is by address discharge accumulation wall electric charge in specific display unit during writing.That is, scan each scan electrode Yi (each scan line) respectively, and the address pulse that will comprise video data delivers on each address electrode A i, by the discharge between scan electrode Yi and the address electrode Ai, in the display unit of desiring to show, form the wall electric charge.SS1～SS8 then is to scan electrode Yi and keeps electrode X and send in turn and keep pulse (sustain pulses) during keeping, and the display unit by address discharge generation wall electric charge once during writing only is lasting luminous in just can be during keeping.
Fig. 5 keeps the signal waveforms that electrode X and scan electrode Yi go up drive signal in representing that known technology is during the keeping of plasma display.As shown in Figure 5, X common actuator 114 and Y scanner driver 112 can be sent in turn and keep pulse to keeping on electrode X and each scan electrode Yi, and the voltage swing of wherein keeping pulse is made as Vs, then maintains on the address electrode Ai on the fixed voltage Vd.By the electric field action of keeping between electrode X and the scan electrode Yi, the display unit that once write data in can making during writing continues luminous.Must be noted that it keeps voltage Vs and must be lower than the discharge start voltage of keeping between electrode X and the scan electrode Yi (firing voltage), avoid because discharge causes storage effect to disappear.
Summary of the invention
The display brightness of plasma display is determined by time length during described the keeping and the mean flow rate during keeping.Main purpose of the present invention then is to utilize so-called space discharge effect (volume discharge), improves display brightness and luminous efficiency at plasma display, uses the demonstration usefulness that improves plasma display.The usage space discharge effect increased the mode of display brightness and luminous efficiency in the past, all was to adopt quite complicated type of drive, and was not easy to implement.
According to described purpose, the present invention then proposes a kind of driving method of plasma display panel.On the header board of plasma display, be provided with electrode and the scan electrode kept parallel to each other, on the plate of back, then be provided with and keep the address electrode that electrode and scan electrode are vertical relation.The feature of this driving method is during keeping, and can send into first simultaneously and keep pulse to keeping electrode and address electrode, uses and is keeping between electrode/scan electrode and between address electrode/scan electrode, causing positive differential pressure; In addition, then then send into second and keep pulse, use and keeping between electrode/scan electrode and causing Negative Pressure Difference between address electrode/scan electrode to scan electrode.Wherein, first keep that pulse and second keeps that pulse is all square wave but phase place is opposite.That is, between address electrode/scan electrode, cause complementary electric field, form the space discharge effect, use and improve display brightness and luminous efficiency thereof.Must be noted that first keeps pulse and second and keep the magnitude of voltage of pulse and must be lower than address electrode/scan electrode and keep discharge start voltage between electrode/scan electrode, avoid writing fashionable storage effect and disappear.Therefore, in order to increase the scope of keeping the pulse voltage value, the discharge start voltage between address electrode/scan electrode must be improved.In the present embodiment, then be to utilize the mode that changes panel structure of plasma display to improve its discharge start voltage.
First kind of mode is that address electrode is divided into two parts, and it is to be electrically connected to first and outstanding being positioned at kept the electrode below that first then places dividing wall below, second portion.The second way then is the width that changes address electrode, that is address electrode is divided into two parts of different in width, and wherein being positioned at the width of keeping electrode below part is greater than another part.The third mode then is to change to keep distance between electrode and scan electrode and the address electrode, that is the feasible vertical range of the vertical range of electrode and header board greater than scan electrode and header board of keeping.The 4th kind of mode then is to increase by a supplemental address electrode, places on the plate of back and electrically connects with original address electrode, and its position is with to keep electrode parallel and place the below of keeping electrode.By described structure-improved, all can reach the purpose that improves discharge start voltage between address electrode and scan electrode.
The present invention also provides a kind of panel structure of plasma display, and it comprises: a header board; One back plate; One keeps electrode, places on the described header board, extends at first direction; The one scan electrode places on the described header board, extends upward in described first party; Partition wall places on the plate of described back, the second party vertical with described first direction extend upward and stride across described keep electrode and described scan electrode below; An and address electrode, place on the plate of described back, described address electrode is included in the first that the below of described dividing wall is extended and placed to described second direction, and electrically connects described first and outstandingly be positioned at the described second portion of keeping the electrode below.
Below, with regard to description of drawings panel structure of plasma display of the present invention and driving method thereof.
Description of drawings
Fig. 1 represents the side cutaway view of the display cell structure of plasma display.
Fig. 2 represents the top view of the display cell structure of plasma display.
Fig. 3 represents the calcspar of the plasma scope that plasma display constitutes.
Fig. 4 represents that known technology drives the sequential chart that plasma display shows a frame.
Fig. 5 keeps the signal waveforms that electrode X, scan electrode Yi and address electrode Ai go up drive signal in representing that known technology is during the keeping of plasma display.
Fig. 6 A and Fig. 6 B represent the schematic diagram of usage space discharge effect among the present invention.
Fig. 7 keeps the signal waveforms that electrode X, scan electrode Yi and address electrode Ai go up drive signal in representing that first embodiment of the invention is during the keeping of plasma display.
Fig. 8 represents the top view of first embodiment of the invention ionic medium body display panel structure.
Fig. 9 represents the top view of second embodiment of the invention ionic medium body display panel structure.
Figure 10 represents the side cutaway view of third embodiment of the invention ionic medium body display panel structure.
Figure 11 represents the side cutaway view of fourth embodiment of the invention ionic medium body display panel structure.
Embodiment
The present invention utilizes the space discharge effect, strengthens display brightness and the luminous efficiency of plasma display in during keeping.That is in during keeping, not only utilize keeping between electrode X and the scan electrode Yi and apply voltage, also between address electrode Ai and scan electrode Yi, apply complementary voltage simultaneously.In order to reach the space discharge effect, mode of the present invention be exactly during keeping in, identical drive signals delivered to simultaneously keeps on electrode X and the address electrode Ai.
Fig. 6 A and Fig. 6 B represent the schematic diagram of usage space discharge effect among the present invention.In Fig. 6 A, will keep pulse voltage Vs simultaneously and deliver to and keep electrode X and address electrode Ai, this moment, scan electrode Yi was 0V.Therefore, the wall electric charge in display unit 10 (being cation) then can move towards scan electrode Yi.In Fig. 6 B, will keep electrode X simultaneously and address electrode Ai is made as 0V, on this moment scan electrode Yi then for keeping pulse voltage Vs, this moment the wall electric charge then respectively court keep electrode X and address electrode Yi moves.By this, during keeping in except keeping the electric field between the electrode X/ scan electrode Yi originally, still increased the auxiliary electric field between the scan electrode Yi/ address electrode Ai, strengthen the space discharge effect by this, just can promote display brightness and luminous efficiency.
Fig. 7 represents in the present embodiment, keeps the signal waveforms that electrode X, scan electrode Yi and address electrode Ai go up drive signal.As shown in the figure, itself and known technology difference be, keeping electrode X in during keeping is to send into identical voltage with address electrode Ai.That is alternately keeping on electrode X/ address electrode Ai and the scan electrode Yi, send into and keep pulse voltage Vs, strengthen display brightness by this and improve luminous efficiency.
Must be noted that keeping pulse voltage Vs must be lower than discharge start voltage between scan electrode Yi and the address electrode Ai, use the data of guaranteeing during writing to be write and can not be eliminated.Generally speaking, keep discharge start voltage between electrode X and the scan electrode Yi greatly about about 190V, address electrode Ai and keep discharge start voltage between the electrode X/ scan electrode Yi then greatly about about 160V.Therefore, in practical operation, keep pulse voltage Vs and must below 160V, can avoid eliminating storage effect.Yet in order to reach the effect during keeping, keeping pulse voltage Vs also must be more than certain voltage value on the other hand.In other words, but the opereating specification of keeping pulse voltage Vs be rather narrow.This problem perhaps can reach for undersized plasma display, but for large-sized plasma display, because the inhomogeneous broadening effect of making enlarges, therefore just not necessarily goes for described type of drive.In order to improve this phenomenon, the discharge start voltage between address electrode Ai and the scan electrode Yi must be improved, but so just can increase the opereating specification of keeping pulse voltage Vs.The mode that is adopted in the present embodiment then is the display cell structure that changes on the plasma display.
Fig. 8 represents the top view of present embodiment ionic medium body display panel structure.As shown in the figure, keep electrode X and scan electrode Yi still keeps original structure.Difference is address electrode Ai.Address electrode Ai is divided into two parts, and wherein address electrode part 20a is a strip, and be placed at the back plate on dividing wall 8 under, its direction is perpendicular to keeps electrode X and scan electrode Yi; The address electrode part divides 20b to electrically connect address electrode part 20a in addition, and outstandingly places the below of keeping electrode X, and its width is also greater than keeping electrode X.Address electrode part 20a and 20b are still on same plane.This structure improved purpose is to adjust the average distance of address electrode Ai and scan electrode Yi, and when its average distance becomes big, then discharge start voltage therebetween also can increase, and increases the purpose of keeping the pulse voltage opereating specification but so just can reach.
By the panel structure of plasma display after described type of drive and the improvement, not only can utilize the space discharge effect to improve display brightness and luminous efficiency, but the opereating specification of keeping pulse voltage simultaneously is also quite big, can be easier to actual application.
Be the mode that adopt to change the address electrode position in first embodiment, use the discharge start voltage that improves between address electrode Ai and the scan electrode Yi, but and then increase the opereating specification of keeping pulse voltage.Except structure shown in Figure 8, can also adopt other structures to reach described purpose.
Fig. 9 represents the top view of second embodiment of the present invention ionic medium body display panel structure.As shown in the figure, keep electrode X and scan electrode Yi still keeps original structure, difference is that address electrode Ai divides into two parts according to conductor width.Wherein address electrode Ai still is positioned on the plate of back, and address electrode part 30a and the width thicker address electrode part 30b thinner by width are formed, and wherein the address electrode part 30b of broad is positioned at and keeps under the electrode X (at header board).The live width of address electrode is to keep unanimity in the known technology, between 80 μ m～100 μ m, in the present embodiment, address electrode part 30a is greatly about about 50 μ m greatly, about about 150 μ m, both ratios are greatly about about 1: 3 greatly for address electrode part 30b.Because address electrode Ai is uneven live width, particularly has bigger live width keeping electrode X lower part (being address electrode part 30b), so it is big that the average distance between address electrode Ai and the scan electrode Yi becomes, then discharge start voltage therebetween also can increase, and increases the purpose of keeping the pulse voltage opereating specification but so just can reach.
Be to adopt the mode that changes address electrode in first embodiment and second embodiment, use the discharge start voltage that improves between address electrode Ai and the scan electrode Yi, then be to change the distance of keeping between electrode X and scan electrode Yi and the address electrode Ai in the present embodiment, adjust the discharge start voltage by this.
Figure 10 represents the side cutaway view of third embodiment of the invention ionic medium body display panel structure.As shown in the figure, address electrode Ai still keeps original structure, and difference is to keep the distance between electrode X ' and scan electrode Yi ' and the address electrode Ai, that is the vertical range between the glass substrate 1 of described two arrays of electrodes and header board is different.Wherein, the vertical range (being made as first length) of keeping electrode X ' and glass substrate 1 is greater than the vertical range (be made as second length) of scan electrode Yi ' with glass substrate 1.In other words, the distance between address electrode Ai and the scan electrode Yi ' becomes big, and then discharge start voltage therebetween also can increase, and increases the purpose of keeping the pulse voltage opereating specification but so also can reach.
The fourth embodiment of the present invention mainly is by increasing by a supplemental address electrode, use the discharge start voltage that changes between scan electrode Yi and the address electrode Ai, but and then reaches and increase the purpose of keeping the pulse voltage opereating specification.
Figure 11 represents the side cutaway view of present embodiment ionic medium body display panel structure.As shown in the figure, keep electrode X, scan electrode Yi and address electrode Ai and still keep original structure, difference increases by a supplemental address electrode A i ' below original address electrode Ai, and forms a dielectric layer 6 between raw address electrode A i and supplemental address electrode A i ', as isolation.The position of supplemental address electrode A i ' is still on the plate of back, and original address electrode Ai electrically connects, its do not exist together be its bearing of trend be be positioned at header board to keep electrode X parallel, and place keep electrode X under.In other words,, can increase the discharge start voltage between address electrode Ai (comprising supplemental address electrode A i ') and the scan electrode Y, increase the purpose of keeping the pulse voltage opereating specification but so also can reach by the effect of supplemental address electrode A i '.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention should be with being as the criterion that the claim scope is defined.
Claims (5)
1. panel structure of plasma display, it comprises:
One header board;
One back plate;
One keeps electrode, places on the described header board, extends at first direction;
The one scan electrode places on the described header board, extends upward in described first party;
Partition wall places on the plate of described back, the second party vertical with described first direction extend upward and stride across described keep electrode and described scan electrode below; And
One address electrode places on the plate of described back, and described address electrode is included in the first that the below of described dividing wall is extended and placed to described second direction, and electrically connects described first and outstandingly be positioned at the described second portion of keeping the electrode below.
2. panel structure of plasma display as claimed in claim 1, the width of wherein said second portion is greater than the described width of keeping electrode.
3. panel structure of plasma display, it comprises:
One header board;
One back plate;
One keeps electrode, places on the described header board, extends at first direction;
The one scan electrode places on the described header board, extends upward in described first party; And
One address electrode, place on the plate of described back and and extend upward in the second party vertical with described first direction, described address electrode comprises the first with first width, and has than wideer second width of described first width and be positioned at the described second portion of keeping the electrode below.
4. panel structure of plasma display as claimed in claim 3, the ratio of wherein said first width and described second width was at 1: 3.
5. panel structure of plasma display, it comprises:
One header board;
One back plate;
One keeps electrode, places on the described header board, extends at first direction;
The one scan electrode places on the described header board, extends upward in described first party;
One first address electrode places on the plate of described back and in the second party vertical with described first direction to extend upward; And
One second address electrode places on the plate of described back and with described first address electrode to electrically connect, described first party extend upward and place described keep electrode below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101204722A CN1300820C (en) | 2001-09-27 | 2001-09-27 | Plasma display panel structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101204722A CN1300820C (en) | 2001-09-27 | 2001-09-27 | Plasma display panel structure |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011409533A Division CN1157706C (en) | 2001-09-27 | 2001-09-27 | Plasma display panel structure and its driving method |
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| Publication Number | Publication Date |
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| CN1503300A CN1503300A (en) | 2004-06-09 |
| CN1300820C true CN1300820C (en) | 2007-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2003101204722A Expired - Fee Related CN1300820C (en) | 2001-09-27 | 2001-09-27 | Plasma display panel structure |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6211614B1 (en) * | 1997-08-13 | 2001-04-03 | Fujitsu Limited | Electrode structure of an AC type plasma display panel |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6211614B1 (en) * | 1997-08-13 | 2001-04-03 | Fujitsu Limited | Electrode structure of an AC type plasma display panel |
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