CN1783407A

CN1783407A - Plasma display panel

Info

Publication number: CN1783407A
Application number: CNA2005101288750A
Authority: CN
Inventors: 朴宪建; 宋武刚
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2001-11-15
Filing date: 2002-11-14
Publication date: 2006-06-07
Anticipated expiration: 2022-11-14
Also published as: CN100538978C; CN100590774C; CN1905119A; CN1905119B; KR20030040718A; CN1783408A

Abstract

There is disclosed a plasma display panel that is adapted to improve brightness uniformity over an entire panel. A disclosed plasma display panel has parameters such as width, thickness and gap of driving electrodes, barrier ribs, black matrix and dielectric layer etc in a central area set differently from in a peripheral area of the plasma display panel.

Description

Plasma display panel

The explanation of dividing an application

The application be on November 14th, 2002 to Patent Office of China national Department of Intellectual Property file an application, application number is 02152267.7, denomination of invention is divided an application for the patent application of " plasma display panel ".

Technical field

The present invention relates to drive the method and apparatus of plasma display panel, relate more specifically to improve the plasma display panel of whole plate brightness uniformity.

Background technology

Usually, plasma display panel (PDP) utilizes the wavelength 147nm ultraviolet ray of inert mixed gas such as He+Xe, Ne+Xe or He+Ne+Xe discharge generation to make fluorescent body luminous, thereby shows the image that comprises character and figure.This PDP makes large-sized film shape easily.And because the development of technology recently, the picture quality that PDP produces is greatly improved.Particularly, because three electrode alternating current (AC) surface discharge PDP have discharge at the wall electric charge of surface accumulation and prevent electrode because therefore the sputter of discharge generation has long advantage of low voltage drive and life-span.

Referring to Fig. 1, the discharge cell lattice of traditional three electrode A C surface discharge PDP are included in transparency electrode 12Y and the 12Z as scan electrode on the upper substrate 11, and the address electrode 17X on the infrabasal plate 16.

Transparency electrode 12Y and 12Z are made by indium tin oxide (ITO) usually.On each transparency electrode 12Y and 12Z, form metal bus electrode 13, in order to reduce resistance.Deposit upper dielectric layer 14 and diaphragm 15 on the upper substrate 11, transparency electrode 12Y and 12Z are formed on the upper substrate 11.

Address electrode 17X and transparency electrode 12Y and 12Z intersect.Have following dielectric layer 18 and shielding muscle 19 on the infrabasal plate, address electrode 17X is formed on the infrabasal plate, and fluorescence coating 20 spreads over down on the surface of dielectric layer 18 and shielding muscle 19.

Inert mixed gas such as He+Xe or Ne+Xe are injected in the discharge space between upper substrate 11, infrabasal plate 16 and the shielding muscle 19 and are used for discharge.

This PDP drives a frame, and frame is divided into each subdomain of different discharge frequencies, thus the tonal gradation of represent images.Each subdomain is divided into the reset cycle that discharge is evenly produced again, is used to select the address cycle of discharge cell unit lattice and is used for keeping the cycle according to discharge frequency realization tonal gradation.For example, when wanting to show the image of 256 tonal gradations, the frame period of 1/60 second (promptly 16.67 milliseconds) is divided into 8 subdomains.In these 8 subdomains each all is divided into reset cycle, address cycle and keeps the cycle, as mentioned above.Here, reset cycle in each subdomain and address cycle all equate in each subdomain, and keep cycle and discharge frequency in each subdomain by 2 ⁿ(wherein n=0,1,2,3,4,5,6 and 7) ratio increases.By this way, because the cycle of keeping is different, therefore can realize the tonal gradation of image in each subdomain.

FPD compares with other flat-panel monitor, and PDP has bigger size as 40 ", 50 ", 60 ".Correspondingly, owing to each electrode 12Y, 12Z, 13 and 17 length of PDP, so the voltage drop and the voltage drop in the external zones that occur in the center that are caused by electrode length differ very big.And, because have discharge gas among the PDP, its pressure is lower than atmospheric pressure, therefore in center that last/infrabasal plate 11 and 16 is only supported by the shielding muscle, compared in conjunction with the external zones of (not shown) by sealant with 16 with last/infrabasal plate 11, substrate 11 is different with 16 intensity.As a result, traditional PD P, as shown in Figure 2, the brightness of center all is lower than external zones 20% in level and vertical direction, and this root of number is the size difference to some extent of plate according to the show.

Summary of the invention

Therefore, the purpose of this invention is to provide the plasma display panel that can improve whole plate brightness uniformity.

In order to reach these and other objects of the present invention, comprise the transparency electrode of a pair of generation continuous discharge according to the plasma display panel of one aspect of the invention; And a plurality of metal bus electrode, be formed on each in a pair of transparency electrode, and its width or they gap each other is in these two, at least one in the center of plasma display panel with different at external zones.

Here, the metal bus electrode width of plasma display panel center is narrower than the external zones.

Here, the gap between the metal bus electrode of plasma display panel center is narrower than the external zones.

Plasma display panel according to a further aspect of the present invention comprises a plurality of paired transparency electrodes, and its width or they gap each other is in these two, at least one in the center of plasma display panel with different at external zones.

Here, the paired width of transparent electrode of plasma display panel center is wideer than the external zones.

Here, the gap between the paired transparency electrode of plasma display panel center is wideer than the external zones.

This plasma display panel also comprises a plurality of metal bus electrode that are formed in a pair of transparency electrode on each, and its width or they gap each other is in the two, at least one in the center with different at external zones.

This plasma display panel also is included in a pair of transparency electrode on each a plurality of blank that the shape with the hole forms side by side.

Here, Kong Bai area or the gap between the blank in the two at least one in the center with different at external zones.

Here, it is bigger than the blank area that is positioned at the center to be positioned at the blank area of external zones.

Here, the gap between the blank of center is than the relief width between the external zones blank.

The plasma display panel of another aspect comprises a plurality of address electrodes according to the present invention, and address voltage is applied to and is used for the selected cell lattice on the address electrode, and the width of address electrode in the center of plasma display panel with different at external zones.

Here, the address electrode width of plasma display panel center is wideer than the external zones.

This plasma display panel also comprises a plurality of paired transparency electrodes, keep voltage and be used to produce continuous discharge above being applied to, and its width or their gaps each other be in the two, at least one in the center with different at external zones.

Here, blank area or the gap between the blank be in the two, at least one in the center with different at external zones.

The plasma display panel of another aspect comprises a plurality of shielding muscle according to the present invention, among its each other gap, its thickness or height three, at least one in the plasma display panel center with different at external zones.

Here, the gap between the center shielding muscle is wideer than the external zones.

Here, the thickness of center shielding muscle is thinner than the external zones.

Here, the height of the aspect ratio external zones of center shielding muscle.

The plasma display panel with a plurality of discharge cell lattice of another feature comprises a plurality of black matrix"s that are formed between the discharge cell lattice according to the present invention, its width in the plasma display panel center with different at external zones.

Here, from the center to the external zones, the width of each black matrix" broadens.

Here, the width of each black matrix" be uniformly and the width of black matrix" according to the position difference in the plasma display panel.

Black matrix" comprises the horizontal black matrix" with the plasma display panel horizontal direction parallel; The vertical black matrix parallel with the plasma display panel vertical direction.

This plasma display panel also is included in the dielectric layer that forms between horizontal black matrix" and the vertical black matrix.

Plasma display panel according to a further aspect of the present invention comprises substrate and dielectric layer, dielectric layer be formed on the substrate and its thickness in the plasma display panel center with different at external zones.

Here, from the external zones to the center, the thickness attenuation of dielectric layer.

Here, from the external zones to the center, the attenuation step by step of the thickness of dielectric layer.

Here, from the external zones to the center, the attenuation linearly of the thickness of dielectric layer.

Description of drawings

With reference to the accompanying drawings and in conjunction with following detailed description to the embodiment of the invention, will know these and other objects of the present invention, in the accompanying drawing:

Fig. 1 represents traditional three electrode A C table and the perspective view of the discharge cell lattice structure of plasma discharging display panel;

The irregularity in brightness that produces in the tradition three electrode A C surface discharge plasma display panels of Fig. 2 presentation graphs 1;

Fig. 3 represents a pair of electrode of keeping according to the first embodiment of the invention plasma display panel;

Fig. 4 represents to be arranged in the center of Fig. 3 PDP and a pair of cutaway view of keeping electrode along I-I ' and II-II ' line of external zones;

Fig. 5 is the curve chart that brightness changes along with the variation of metal bus electrode width among the expression PDP;

Fig. 6 represents to keep electrode in pairs according to second embodiment of the invention PDP;

Fig. 7 represents a pair of electrode of keeping according to third embodiment of the invention PDP;

Fig. 8 represents a pair of electrode of keeping according to fourth embodiment of the invention PDP;

Fig. 9 A is a pair of cutaway view of keeping electrode III-III ' along the line of PDP among Fig. 8;

Fig. 9 B is a pair of cutaway view of keeping electrode IV-IV ' along the line of PDP among Fig. 8;

Fig. 9 C is a pair of cutaway view of keeping electrode V-V ' along the line of PDP among Fig. 8;

Fig. 9 D is a pair of cutaway view of keeping electrode VI-VI ' along the line of PDP among Fig. 8;

Fig. 9 E is a pair of cutaway view of keeping electrode VII-VII ' along the line of PDP among Fig. 8;

Figure 10 is the curve chart that brightness changes along with the variation in gap between the metal bus electrode among the expression PDP;

Figure 11 represents a pair of electrode of keeping according to fifth embodiment of the invention PDP;

Figure 12 represents to keep electrode in pairs according to sixth embodiment of the invention PDP;

Figure 13 represents to keep electrode in pairs according to seventh embodiment of the invention PDP;

Figure 14 represents to keep electrode in pairs according to eighth embodiment of the invention PDP;

Figure 15 represents to keep electrode in pairs according to ninth embodiment of the invention PDP;

Figure 16 represents a pair of electrode of keeping according to tenth embodiment of the invention PDP;

Figure 17 represents a pair of electrode of keeping according to eleventh embodiment of the invention PDP;

Figure 18 is the curve chart that expression brightness changes along with the variation of width of transparent electrode among the PDP;

Figure 19 represents to keep electrode in pairs according to twelveth embodiment of the invention PDP;

Figure 20 represents a pair of electrode of keeping according to thriteenth embodiment of the invention PDP;

Figure 21 represents a pair of electrode of keeping according to fourteenth embodiment of the invention PDP;

Figure 22 is expression brightness along with the variation in gap and the curve chart that changes between the transparency electrode among the PDP;

Figure 23 represents to keep electrode in pairs according to fifteenth embodiment of the invention PDP;

Figure 24 represents to keep electrode in pairs according to sixteenth embodiment of the invention PDP;

Figure 25 represents a pair of electrode of keeping according to seventeenth embodiment of the invention PDP;

Figure 26 represents a pair of electrode of keeping according to eighteenth embodiment of the invention PDP;

Figure 27 is the curve chart that expression brightness changes along with the variation of PDP empty area;

Figure 28 represents to keep electrode in pairs according to nineteenth embodiment of the invention PDP;

Figure 29 represents a pair of electrode of keeping according to twentieth embodiment of the invention PDP;

Figure 30 represents to keep electrode in pairs according to 21st embodiment of the invention PDP;

Figure 31 represents a pair of electrode of keeping according to 22nd embodiment of the invention PDP;

Figure 32 represents a pair of electrode of keeping according to 23th embodiment of the invention PDP;

Figure 33 is the curve chart that expression brightness changes along with the variation in gap between the PDP empty;

Figure 34 represents to keep electrode in pairs according to 24th embodiment of the invention PDP;

Figure 35 represents to keep electrode in pairs according to 25th embodiment of the invention PDP;

Figure 36 represents to keep electrode in pairs according to 26th embodiment of the invention PDP;

Figure 37 represents the address electrode according to 27th embodiment of the invention PDP;

Figure 38 is the curve chart that expression brightness changes along with the variation of address electrode width among the PDP;

Figure 39 represents the address electrode according to 28th embodiment of the invention PDP;

Figure 40 represents the perspective view according to the lower plate of 29th embodiment of the invention PDP;

Figure 41 represents the gap difference between the shielding muscle among Figure 40;

Figure 42 represents the shielding muscle according to 30st embodiment of the invention PDP;

Figure 43 represents the shielding muscle according to 31nd embodiment of the invention PDP;

Figure 44 represents the shielding muscle according to 32th embodiment of the invention PDP;

Figure 45 represents the shielding muscle according to 33th embodiment of the invention PDP;

Figure 46 represents the shielding muscle according to 34th embodiment of the invention PDP;

Figure 47 represents the shielding muscle according to 35th embodiment of the invention PDP;

Figure 48 is the curve chart that expression brightness changes along with the variation of shielding muscle height;

Figure 49 represents the perspective view according to the upper plate of 36th embodiment of the invention PDP;

Figure 50 represents the black matrix" shown in Figure 49 in detail;

Figure 51 represents another embodiment of the black matrix" shown in Figure 49;

Figure 52 is the curve chart that concerns between expression black matrix" width and the brightness;

Figure 53 is the cutaway view of expression according to the upper plate of 37th embodiment of the invention PDP;

Figure 54 represents the upper plate of PDP shown in Figure 53;

Figure 55 represents the black matrix" according to 38th embodiment of the invention PDP;

Figure 56 represents the black matrix" according to 39th embodiment of the invention PDP;

Figure 57 represents the perspective view according to the dielectric layer of 40st embodiment of the invention PDP;

Figure 58 is the curve that concerns between expression medium thickness and the brightness;

Figure 59 represents the perspective view according to the dielectric layer of 41nd embodiment of the invention PDP;

Figure 60 represents the perspective view according to the dielectric layer of 42th embodiment of the invention PDP;

Figure 61 represents the perspective view according to the dielectric layer of 43th embodiment of the invention PDP;

Figure 62 be expression according to the present invention the curve chart of luminance deviation between the center of PDP and the external zones.

Embodiment

Explain the preferred embodiments of the present invention below with reference to Fig. 3 to Figure 62.

To Fig. 4, have metal bus electrode 33 referring to Fig. 3, be formed on each among a pair of transparency electrode 32Y and the 32Z, and its width narrows down to the center from the external zones of PDP according to the PDP of first embodiment of the invention.

In the relation of the width of metal bus electrode 33 and brightness, as shown in Figure 5, along with the brightness of the narrowed width PDP of metal bus electrode 33 increases.Therefore, because the width of metal bus electrode 33 is narrow at external zones at the center ratio, so can compensate the difference in brightness between PDP center and the external zones.Consider board size and external zones brightness, the center width BUSW1 of metal bus electrode 33 need be set at than the width B USW2 narrow 20% of external zones or be less than 20%.

Upper dielectric layer 34 and diaphragm 35 are deposited on the upper substrate 31, with

transparency electrode

32Y and 32Z and metal bus electrode 33 coverings.The wall electric charge that plasma discharge produces is accumulated on the upper dielectric layer 34.Diaphragm 35 prevents that the sputter that plasma discharge produces from damaging upper dielectric layer 34, and increases the efficient of Secondary Emission.The general magnesium oxide MgO that uses is as diaphragm 35.

Address electrode 37X vertically intersects with transparency electrode 32Y and 33Z.Following dielectric layer 38 and shielding muscle 39 are formed on the infrabasal plate 36 at address electrode 37X place, and fluorescence coating 40 spreads on the surface of shielding muscle 39 and following dielectric layer 38.

Shielding muscle 39 is formed on the address electrode 37X abreast, prevents that the ultraviolet ray of discharge generation and luminous ray are leaked in the contiguous discharge cell lattice.

Fluorescence coating 40 by plasma discharge produce ultraviolet ray excited, produce a kind of in three kinds of luminous raies of red, green, blue.

Inert mixed gas that is used for discharging such as He+Xe, Ne+Xe or He+Ne+Xe/

infrabasal plate

31 and 36 and shielding muscle 39 between the discharge space of the discharge cell lattice that form.

In order to compensate between PDP center and the external zones difference in brightness in vertical direction, PDP according to second embodiment of the invention has the metal bus electrode 63 that width is BUSW1 and BUSW2, they are formed on in a pair of transparency electrode 62 each, and from the external zones to the center its narrowed width.External zones be positioned at vertical direction on/downside.

PDP according to third embodiment of the invention, it uses the first and second above-mentioned embodiment simultaneously, on a pair of transparency electrode 72, form, width is the metal bus electrode 73 of BUSW1 and BUSW2, in the horizontal direction with vertical direction, from the external zones to the center, narrow down, thereby compensated difference in brightness between center and the external zones in level and vertical direction simultaneously.

With reference to figure 8 to 10, expression is according to the PDP of fourth embodiment of the invention.Keep the electrode except a pair of of PDP, remainder is identical with the PDP of the foregoing description, therefore it is not explained in detail.

To 9E, have gap BUSG1 and BUSG2 83 of pair of metal bus electrodes referring to Fig. 8 and 9A, from the external zones to the center, broaden, and pair of metal bus electrode 83 is formed on in a pair of transparency electrode 82 each according to the PDP of fourth embodiment of the invention.

Between brightness and metal bus electrode 83 in the relation in gap, the brightness of PDP broadens and increases with gap BUSG1 and BUSG2's between the metal bus electrode 83, as shown in figure 10.And the efficient of PDP broadens and increases with gap between the metal bus electrode 83.Therefore and since metal bus electrode 83 the gap of center BUSG1 than in external zones wide, so can compensate the difference of brightness between PDP center and the external zones.

On the basis of each side 91 and 92, compare with external zones, the gap between the metal bus electrode 83 of center outwards roomy about 20% or be less than 20%, and scan/keep electrode Y and general keep electrode Z on side 91 and 92 mutually towards the other side.The width of each metal bus electrode 83 equates in center and external zones.

Referring to Figure 11, have a pair of metal bus electrode 113 that is formed in a pair of transparency electrode 112 on each according to the PDP of fifth embodiment of the invention, the gap between the metal bus electrode 113 broadens in some PD positions, pixel region unit from the external zones to the center.Here the length of pixel region unit PD comprises several or tens pixels.Therefore, the gap between the metal bus electrode 113 is wide more the closer to the center, the length of center comprise several or tens pixels as its unit.

Referring to Figure 12, in order to compensate the difference in brightness of PDP between vertical direction center and external zones, have a pair of metal bus electrode 123 that is formed in a pair of transparency electrode 122 on each according to the PDP of sixth embodiment of the invention, the gap between the metal bus electrode 123 broadens from the external zones to the center.External zones be positioned at vertical direction on/lower limb.

Referring to Figure 13, has a pair of metal bus electrode 133 that is formed in a pair of transparency electrode 132 on each according to the PDP of seventh embodiment of the invention, gap between the metal bus electrode 133 broadens from the external zones to the center simultaneously in the horizontal and vertical directions, thereby simultaneously in the difference in brightness between compensation center and the external zones on the level of PDP and the vertical direction.

Referring to Figure 14, has a pair of metal bus electrode 143 that is formed in a pair of transparency electrode 142 on each according to the PDP of eighth embodiment of the invention, gap between the metal bus electrode 143 broadens from the external zones to the center simultaneously in the horizontal and vertical directions, and the width of each metal bus electrode 143 from be positioned on the vertical direction/external zones of lower limb broadens to the center, thereby simultaneously in the difference in brightness between compensation center and the external zones on the level of PDP and the vertical direction.

Referring to Figure 15, has a pair of metal bus electrode 153 that is formed in a pair of transparency electrode 152 on each according to the PDP of ninth embodiment of the invention, gap between the metal bus electrode 153 broadens from the external zones to the center simultaneously in the horizontal and vertical directions, and the width of each metal bus electrode 143 from be positioned on the vertical direction/external zones of lower limb narrows down to the center, thereby simultaneously in the difference in brightness between compensation center and the external zones on the level of PDP and the vertical direction.

Figure 16 represents the transparency electrode of the tenth to the 16 embodiment PDP according to the present invention to Figure 23.

Referring to Figure 16 and 17, according to the present invention the tenth and the PDP of the 11 embodiment have a pair of transparency electrode 162 and 172 that width is ITOW1 and ITOW2, and width broadens from the external zones to the center.

As shown in figure 18, in the relation in paired metal bus electrode 162 and 172 between brightness and width ITOW1 and the ITOW2, along with the width increase of paired metal bus electrode 162 and 172, the brightness of PDP improves.Therefore, because the width of metal bus electrode 162 and 172 is wide at external zones at the center ratio, just can compensate the difference of brightness between PDP center and the external zones.In pairs transparency electrode 162 and 172 center width ITOW1 are than external zones width ITOW2 wide about 20% or be less than 20%.

Figure 16 represents that the outside of a pair of transparency electrode 162 has certain gradient, and opposite side is a level, thereby its width broadens the closer to the center.Figure 17 represents that the outside of a pair of transparency electrode 172 is step-like, and opposite side is a level, thereby its width broadens the closer to the center.

Referring to Figure 19, according to a pair of transparency electrode 192 of the PDP of twelveth embodiment of the invention, its width broadens from the external zones to the center simultaneously in the horizontal and vertical directions, thus the difference in brightness of compensation between from the center to the external zones.Embodiment also can implement under the mode identical with the stairstepping of Figure 17.

Referring to Figure 20 and 21, a pair of

transparency electrode

202 and 212 of the PDP of the 13 and 14 embodiment according to the present invention, its gap is ITOG1 and ITOG2 when from external zones to the center.

In brightness and in pairs between the

metal bus electrode

202 and 212 in the relation of gap ITOG1 and ITOG2, increase along with gap ITOG1 and ITOG2 between paired

metal bus electrode

202 and 212, the brightness of PDP improves, as shown in figure 22, if but the gap surpass certain value after brightness descend again.Therefore, because the gap of paired

metal bus electrode

202 and 212 is wide at external zones at PDP center ratio, just can compensate the difference in brightness between PDP center and the external zones.Here, the gap ITOG1 of center is set at and is equal to or less than the numerical value that begins to descend after brightness is risen.Compare the paired transparency electrode 202 of center and 212 gap ITOG1 wide about 20% or be less than 20% with the gap ITOG2 of external zones.

Figure 20 is expressed as transparency electrode 202 is risen and descends with certain gradient and is symmetrical from figure, thereby its gap broadens when from external zones to the center.Figure 21 is expressed as transparency electrode 212 friendly stairsteppings are symmetrically distributed, thereby its gap broadens when from external zones to the center.

Referring to Figure 23, PDP according to fifteenth embodiment of the invention, between a pair of transparency electrode 232, has the gap, when simultaneously in the horizontal direction with vertical direction on during from external zones to the center gap broaden, thereby in the difference in brightness between compensation center and the external zones on the horizontal direction of PDP and the vertical direction.

Referring to Figure 24, PDP according to sixteenth embodiment of the invention, between a pair of transparency electrode 242, has the gap, when simultaneously in the horizontal direction with vertical direction on during from external zones to the center gap broaden, and the width of each transparency electrode 242 simultaneously in the horizontal direction with vertical direction on during from external zones to the center gap broaden, thereby in the difference in brightness between compensation center and the external zones on the horizontal direction of PDP and the vertical direction.

Referring to Figure 25 and 26, the PDP of the 17 and 18 embodiment comprises a pair of

transparency electrode

252 and 262 according to the present invention, wherein have a plurality ofly blank 255 and 265, be used to increase efficient and brightness,

metal bus electrode

253 and 263 is formed on in the paired transparency electrode each.

Because blank 255 and 265 existence, each transparency electrode 252 of PDP and 262 width increase, and the gap between the

transparency electrode

252 and 262 reduces in pairs, thereby discharge can be begun with low-voltage and short discharge path, thereby increases efficient and brightness.

Blank

255 and 265 shapes with the hole are formed in paired

transparency electrode

252 and 262, the contraction in length of vertical side edge when from external zones to the center, thus diminish to center area B LA1 and BLA2 from external zones.

In the area B LA1 and the relation between the BLA2 of brightness and blank 245 and 255, as shown in figure 27, area B LA1 and BLA2 along with blank 245 and 255 diminish, and PDP brightness increases.Therefore, because blank 245 and 255 area diminishes to the center from the PDP external zones, just can compensate the difference in brightness between PDP center and the external zones.At the area B LA2 of external zones blank 255 and 265 the big 5-40% of area B LA1 than center blank 255 and 265.

Figure 25 represent gap between the vertically opposite blank 255 in the center with identical at external zones.Figure 26 represents that the gap between the vertically opposite blank 265 broadens from the external zones to the center, make the gap between the vertically opposite blank 265 become big, thereby increase the brightness of center.

Referring to Figure 28, according to the PDP of nineteenth embodiment of the invention, 285 areas of the blank from the external zones to the center reduce in the horizontal and vertical directions simultaneously, thereby compensate the difference in brightness between center and the external zones simultaneously in the horizontal and vertical directions.In an identical manner, can from the external zones to the center, reduce the area of the blank 265 shown in Figure 26 simultaneously in the horizontal and vertical directions.

Referring to Figure 29, comprise a pair of transparency electrode 292 according to the PDP of twentieth embodiment of the invention, wherein form a plurality of blankly 295 for the efficient that increases PDP and brightness, metal bus electrode 293 is formed on in the paired transparency electrode 292 each.

The length of blank 295 horizontal sides shortens from the external zones to the center, thereby diminishes to center area B LA1 and BLA2 from external zones.The brightness that produces the PDP center thus can be higher than the brightness of external zones, just can compensate the difference in brightness between PDP center and the external zones.At the area B LA2 of external zones blank 295 the big 5-40% of area B LA1 than center blank 295.

Referring to Figure 30, PDP according to 21st embodiment of the invention, simultaneously the area from external zones to center blank 305 diminishes in the horizontal and vertical directions, thereby in the difference in brightness between compensation center and the external zones on the horizontal direction of PDP and the vertical direction.

Referring to Figure 31, according to the PDP of 22nd embodiment of the invention, because the horizontal side from external zones to center blank 315 and the length of vertical side edge all shortens, thereby area B LA1 from external zones to center blank 315 and BLA2 diminish.Although illustrate, blank 315 are applied to level and vertical direction, thereby in the difference in brightness between compensation center and the external zones on the horizontal direction of PDP and the vertical direction.

Referring to Figure 32, according to the PDP of 23th embodiment of the invention, the gap BLG1 between the external zones blank 325 and BLG2 are different with the center.

From external zones to the gap BLG1 the center blank 325 and BLG2 become big, but blank 325 area is identical.

In gap BLG1 between brightness and blank 325 and the relation of BLG2, along with the gap between blank 325 broadens, the brightness of PDP improves.Therefore, owing to broaden to the gap the center blank 325, just can compensate the difference in brightness between PDP center and the external zones from external zones.Gap BLG1 between center blank 325 is than the gap BLG2 wide 140% of external zones or be less than 140%.

Referring to Figure 34, PDP according to 24th embodiment of the invention, though blank 335 area is identical, but broaden to the gap the center blank 335 from external zones in the horizontal and vertical directions simultaneously, thereby in the difference in brightness between compensation center and the external zones on the level of PDP and the vertical direction.

Figure 35 and 36 expressions are according to the present invention the 25 and the PDP of the 26 embodiment.

Referring to Figure 35 and 36, the while, from the external zones to the center, blank 355 and 365 area diminished in the horizontal and vertical directions, and the gap between blank 355 and 365 broadens.

By this way, the center with can be formed on the transparency electrode of PDP in the peripheral sector width metal bus electrode different with the gap, wherein paired transparency electrode is different with width and gap in the center at external zones, and perhaps Kong Bai area is different with the gap.

Figure 37 represents the address electrode according to the PDP of 27th embodiment of the invention.

Referring to Figure 37, comprise address electrode 371 according to the PDP of 27th embodiment of the invention, its width at external zones with different in the center.

Address electrode 371 is in vertical direction its width ADDW1 and ADDW2 increase from the external zones to the center.

In the relation of the width ADDW1 of brightness and address electrode 371 and ADDW2, along with the width ADDW1 and the ADDW2 of address electrode 371 increases, the brightness of PDP improves, as shown in figure 38.Therefore and since the width ADDW1 of address electrode 371 and ADDW2 in the center greater than at external zones, just can compensate the difference in brightness between PDP center and the external zones.The center width ADDW1 of address electrode 371 is than external zones width ADDW2 wide about 20% or be less than 20%.

Figure 39 represents the address electrode according to the PDP of 28th embodiment of the invention.

Referring to Figure 39, PDP according to 28th embodiment of the invention, the width of its address electrode 391 broadens from the external zones to the center simultaneously in the horizontal and vertical directions, thereby in the difference in brightness between compensation center and the external zones on the level of PDP and the vertical direction.

By this way, can with the center with have different width of transparent electrode and gap at external zones or have different blank areas and gap transparency electrode, have the metal bus electrode in different in width or gap and combine with the address electrode that has a different in width at external zones in the center.

The PDP lower plate of Figure 40 and 43 expression the 29 and 31 embodiment and be formed on shielding muscle on the lower plate according to the present invention.

Referring to Figure 40 and 41, according to the PDP of 29th embodiment of the invention, the spacing BRP1 and the BRP2 of gap between the shielding muscle 401 and shielding muscle 401 narrow down.

These shielding muscle 401 are formed on the address electrode 37X abreast with the shape of band, and have certain height and be used to prevent electricity and interference of light between the neighboring discharge cells lattice.And shielding muscle 401 is at external zones and form the difference of discharge cell lattice discharge space in the center, thus the difference in brightness between compensation center and the external zones.

In order more specifically to describe, the gap between the shielding muscle is wide more, and discharge space is big more.If discharge space is big, then the area of dispersion of fluorescent material increases, and produces discharge in the discharge cell lattice on a large scale, and ultraviolet quantity increases equally.On the contrary, if gap turn narrow causes discharge space to reduce between the shielding muscle 401, then produce discharge in the discharge cell lattice on a small scale, ultraviolet quantity reduces equally.Therefore, the gap between center shielding muscle 401 is than the broad at external zones, and each discharge cell lattice brightness of center improves.As a result, because the gap of PDP external zones is different with the gap of center, just can compensate the difference in brightness between PDP center and the external zones.

After the brightness of considering board size and external zones, need to set PDP shielding muscle 401 external zones be about 20% or be less than 20% in the gap of center difference.The shielding muscle 421 and 431 of quadrangle or wall shape, and the shielding muscle 401 of strip-type shown in Figure 42 and 43, are arranged in matrix or triangle, wherein shield muscle 401 the gap of PDP center with can be applied among the PDP the different of PDP external zones.

And in the case, the gap between quadrangle shown in Figure 42 and 43 or the wall shape shielding muscle 421 and 431 is wide at external zones at PDP center ratio.

The PDP shielding muscle of Figure 44 to 46 expression the 32 to the 34 embodiment according to the present invention.

Referring to Figure 44, in PDP, equate at the gap BRP of shielding between the muscle 441 on the whole PDP surface according to 32th embodiment of the invention, and thickness B RT1 and BRT2 from the center of PDP to the external zones thickening.The shielding muscle is thick more, and the brightness of discharge cell lattice is low more.Otherwise the shielding muscle is thin more, and the brightness of discharge cell lattice is high more.

Shielding muscle 441 is formed on the address electrode abreast with the band shape, and is used to prevent between the neighboring discharge cells lattice electricity and light and interference having certain altitude on the infrabasal plate.And, thereby the thickness of shielding muscle 441 is in center and different difference in brightness that compensate between PDP centers and the external zones at external zones.

After the brightness of considering board size and external zones, need to set PDP shielding muscle 441 the center be about 20% or be less than 20% at the thickness B RT1 of external zones and the difference of BRT2.

The shielding muscle

451 and 461 of quadrangle or wall shape, and the shielding muscle 441 of strip-type shown in Figure 45 and 46, are arranged in matrix or triangle, wherein shield muscle 441 at the thin thickness of center and can be applied among the PDP at the external zones thickening.And in the case, the thickness B RT1 and the BRT2 of the quadrangle shown in Figure 45 and 46 or wall

shape shielding muscle

451 and 461 are thin at external zones at PDP center ratio.

Figure 47 represents the PDP according to 35th embodiment of the invention.

Referring to Figure 47, in the PDP according to 35th embodiment of the invention, the thickness of shielding muscle 471 and gap thereof are uniformly, yet its height B RH1 and BRH2 uprise to the center from the external zones of PDP.

Shielding muscle 471 is formed on the address electrode abreast with the band shape, and has certain altitude and be used to prevent between the neighboring discharge cells lattice electricity and light and interference.And, thereby the thickness of shielding muscle 471 is in center and different difference in brightness that compensate between centers and the external zones at external zones.

In order more specifically to describe, shielding muscle 471 is high more, and discharge space is big more.Thus, the area of dispersion of fluorescent material increases, and produces discharge in the discharge cell lattice on a large scale, and ultraviolet quantity increases equally.On the contrary, if gap turn narrow causes discharge space to reduce between the shielding muscle 401, then produce discharge in the discharge cell lattice on a small scale, ultraviolet quantity reduces equally.Therefore, shielding height B RH1 of muscle 471 and BRH2 be higher than at external zones in the PDP center, and as shown in figure 48, each discharge cell lattice brightness of center improves.As a result, because the height of shielding muscle 471 different in PDP external zones and center just can compensate the difference in brightness between PDP center and the external zones.

After the brightness of considering board size and external zones, the height that needs to set shielding muscle 471 is about 20% or is less than 20% at PDP external zones and the difference in the center.Shielding muscle strip-type, quadrangle or wall shape is arranged in matrix or triangle, and it is low and uprise and can be applied among the PDP at external zones in the PDP center wherein to shield the height B RH1 of muscle 471 and BRH2.

The present invention the 32 and the 35 embodiment can combine.Just, can there be difference the gap between the thickness of shielding muscle, the shielding muscle and external zones and the center of height in same PDP of shielding muscle, thus the difference of compensate for brightness.This shielding muscle and drive electrode combine, for example above transparency electrode, metal bus electrode and the address electrode of the PDP described in the embodiment, thereby can compensate difference in brightness between PDP external zones and the center.

The black matrix" of Figure 49 to 56 expression PDP of the 36 to 39 embodiment according to the present invention.

Referring to Figure 49, comprise black matrix" 491 according to the PDP of 36th embodiment of the invention, they are different the width of PDP center and external zones.Black matrix" 491 is formed on the border of neighboring discharge cells lattice, prevents the interference of light between the neighboring discharge cells lattice.And the width of black matrix" 491 is narrow at external zones at the center of PDP ratio, thus the difference in brightness between compensation PDP external zones and the center.Curved shape can be made in the both sides of black matrix" 491, as shown in figure 50, perhaps makes rectilinear form, shown in Figure 51.

In Figure 49, a pair of electrode of keeping of reference number 492 expressions is comprising transparency electrode and metal bus electrode.

If the width of black matrix" 491 is wide, then increase the light absorption area of as much.On the contrary, if the width of black matrix" is narrow, then the area of light absorption reduces as much.Therefore, in the relation of black matrix" 491 and PDP brightness, the brightness of PDP improves with the narrowed width of black matrix" 491, shown in Figure 52.

When considering the brightness of board size and external zones, need the width W 1 of black matrix" 491 and the difference between the W2 20% or be less than in 20%.

Referring to Figure 53 and 54, upper plate according to the PDP of 37th embodiment of the invention comprises a pair of electrode 532 of keeping that is formed on the infrabasal plate, be formed between the neighboring discharge cells lattice the horizontal black matrix" 531A parallel with keeping electrode 532 in pairs, and with keep electrode 532 square crossings and its width in pairs at the external zones of PDP and the vertical black matrix 531B different in the center.In the upper plate of PDP, there is the first dielectric layer 533A to be formed on and is used to cover pairs of sustain electrodes 532 and horizontal black matrix" 531A on the upper substrate 31, and the second dielectric layer 533B that is used to cover vertical black matrix 531B.On the whole surface of the second dielectric layer 533B, has layer protecting film 534.

Vertical black matrix 531B is formed on first dielectric layer 5, and its direction is intersected with horizontal black matrix" 531A.The width of each vertical black matrix 531A is narrow at external zones at the center ratio on the vertical direction of PDP.Because vertical black matrix 531B makes the brightness of center more higher than the external zones in vertical direction, therefore can compensate the difference in brightness between PDP center and the external zones.

After the brightness of the size of considering PDP and external zones, need to form vertical black matrix 531B, the width W 3 that makes its center differs from 20% with the width W 4 of external zones or is less than in 20%.

Referring to Figure 55 and 56, comprise horizontal black matrix" 551A according to the PDP of 38th embodiment of the invention, its width on the vertical direction of PDP in the center different with at external zones; And vertical black matrix 551B, its width on the horizontal direction of PDP in the center different with at external zones.

Each horizontal black matrix" 551A is width uniform stripe shape on the horizontal direction of PDP.Horizontal black matrix" 551A is narrower than the width W 6 of other the horizontal black matrix" 551A that is positioned at external zones in the width W 5 of center in vertical direction.Along with on the PDP vertical direction from the external zones to the center, because the difference of the width W 5 of horizontal black matrix" 551A and W6 forms the raising of PDP brightness.

Each vertical black matrix 551B is width uniform stripe shape on the vertical direction of PDP.Vertical black matrix 551B width W 7 in the center on the PDP horizontal direction is narrower than the width W 8 of other vertical black matrix 551B that is positioned at external zones.Along with on the PDP horizontal direction from the external zones to the center, because the difference of the width W 7 of vertical black matrix 551B and W8 forms the raising of PDP brightness.

After the brightness of the size of considering PDP and external zones, need to form horizontal black matrix" 551A and vertical black matrix 551B, make the width of the width of its center and external zones differ respectively or be less than in 20% 20%.

Therefore, black matrix" 551A shown in Figure 55 and 56 and 551B compensate PDP respectively in the difference in brightness between external zones and the center on vertical and the horizontal direction.

Described as top embodiment, by combining with shielding muscle or drive electrode, for example transparency electrode, metal bus electrode and address electrode, the black matrix" shown in the present invention the 36 to 39 embodiment also can compensate the difference in brightness between PDP center and the external zones.

The PDP of Figure 57 to 61 expression the 40 to the 43 embodiment according to the present invention.

Referring to Figure 57, in PDP according to 40st embodiment of the invention, the thickness that is formed on the dielectric layer 571 on the upper substrate 31 from the external zones of PDP to the center attenuation.MgO diaphragm (not shown) deposition or be printed on the whole surface of dielectric layer 571 with its covering.

Dielectric layer 571 is the thinnest at the center of PDP thickness, and to external zones, its thickness step is thickening gradually from the center of PDP.Therefore, dielectric layer 571 has the cross section of step.Between the center of PDP and external zones, there are the dielectric layer 571 accumulation wall electric charges of thickness difference and compensate weakening of PDP center brightness.In order more specifically describing, shown in Figure 58, to show brightness and be formed on relation between the medium thickness on the PDP upper plate.

Shown in Figure 58, the thickness of dielectric layer is thick more, and brightness is low more.Otherwise the thickness of dielectric layer is thin more, and brightness is high more.Therefore, because dielectric layer 571 is thin and thicker at external zones in the center of PDP, just can compensate the difference in brightness between PDP center and the external zones.After the peripheral brightness of considering board size and PDP, the thickness that needs to set dielectric layer 571 is 20% or is less than 20% in center and the difference between external zones.

Referring to Figure 59, comprise dielectric layer 591 according to the PDP of 41nd embodiment of the invention, the cross section that it has step is formed on the vertical direction of PDP or on the horizontal direction its thickness attenuation from the external zones to the center.When dielectric layer 591 during with dielectric layer 571 contrasts shown in Figure 57, the thickness of the dielectric layer shown in Figure 57 is all inequality on the vertical direction of PDP and horizontal direction.On the other hand, the thickness of the dielectric layer shown in Figure 59 is in vertical direction or the horizontal direction difference of PDP.

The center of the thinnest part of dielectric layer 591 on vertical direction or horizontal direction, and its thickness from the center to external zones step thickening gradually.Dielectric layer 591 is the thinnest and have a step cross section in the center, its thickness from the center to external zones symmetry ground thickening.The zone that dielectric layer 591 thickness equate is the planar structure of strip-type.Because dielectric layer 591 accumulation wall electric charges and the thinnest in the center of PDP just can compensate PDP center lowering of luminance.The MgO diaphragm deposits or is printed on the whole surface of dielectric layer 591.After the brightness of considering board size and PDP external zones, need to set the difference in brightness of dielectric layer 591 between PDP center and external zones and be 20% or be less than 20%.

Referring to Figure 60, comprise dielectric layer 601 according to the PDP of 42th embodiment of the invention, its be formed on the upper substrate 31 and its thickness from external zones attenuation linearly of PDP to the center.

Dielectric layer 601 is the thinnest in the center on the vertical direction of PDP and/or horizontal direction, and its thickness thickening linearly from the center to the external zones.Therefore, the surface of dielectric layer 601 tilts with certain gradient with respect to upper substrate 31.Because dielectric layer 601 accumulation wall electric charges and the thinnest in the center of PDP just can compensate PDP center lowering of luminance.The MgO diaphragm deposits or is printed on the whole surface of dielectric layer 601.After the brightness of considering board size and PDP external zones, need to set the difference in brightness of dielectric layer 601 between PDP center and external zones and be 20% or be less than 20%.

Referring to Figure 61, comprise dielectric layer 611 according to the PDP of 43th embodiment of the invention, it is formed on the upper substrate 31, and thickness is from external zones attenuation gradually to the center of PDP, and curved shape is made on its surface.

Dielectric layer 611 is the thinnest in the center on the vertical direction of PDP and/or horizontal direction, and its thickness from the PDP center to the external zones thickening.The surface of dielectric layer 611 with respect to upper substrate 31 be tilt and bend to certain curvature.Because dielectric layer 611 accumulation wall electric charges and the thinnest in the center of PDP just can compensate PDP center lowering of luminance.The MgO diaphragm deposits or is printed on the whole surface of dielectric layer 611.After the brightness of considering board size and PDP external zones, need to set the difference in brightness of dielectric layer 61 between PDP center and external zones and be 20% or be less than 20%.

The upper plate of PDP, the thickness that makes dielectric layer 571,591,601,611 when making, can engage with traditional lower plate or the PDP lower plate of the present invention in the foregoing description with different at external zones in the center.

As mentioned above, corresponding with the difference of brightness between PDP center and the external zones, the shielding muscle of PDP of the present invention is different with width (or thickness) or gap, the thickness of black matrix" and thickness of dielectric layer or the like of drive electrode such as metal bus electrode, transparency electrode and address electrode etc., shown in Figure 62, thereby the difference in brightness between PDP center and the external zones can be limited in ± 1% with interior or littler, all be uniform on whole screen thereby make the brightness of PDP.

Although the present invention has explained the present invention with the embodiment shown in the above-mentioned accompanying drawing, but the personnel for normal well-known in this area it should be understood that, the present invention is not subjected to the restriction of embodiment, and can make various variations or modification to it in the case of without departing from the spirit of the present invention.Therefore, scope of the present invention only is to be determined by appended claim and equivalents thereof.

Claims

1. plasma display panel that wherein has a plurality of discharge cell lattice comprises:

A plurality of black matrix"s, be formed between the discharge cell lattice and its width in the center of plasma display panel with different at external zones.

2. plasma display panel as claimed in claim 1 is characterized in that the width of each black matrix" broadens from the center to the external zones.

3. plasma display panel as claimed in claim 1, the width that it is characterized in that each black matrix" are uniformly, and have different width according to its position black matrix" in plasma display panel.

4. plasma display panel as claimed in claim 1 is characterized in that black matrix" comprises:

Horizontal black matrix" with the plasma display panel horizontal direction parallel; And

The vertical black matrix parallel with the plasma display panel vertical direction.

5. plasma display panel as claimed in claim 4 also comprises:

Be formed on the dielectric layer between horizontal black matrix" and the vertical black matrix.