CN100545992C - Asymmetric shadow mask plasma display panel - Google Patents
Asymmetric shadow mask plasma display panel Download PDFInfo
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- CN100545992C CN100545992C CNB2006100860643A CN200610086064A CN100545992C CN 100545992 C CN100545992 C CN 100545992C CN B2006100860643 A CNB2006100860643 A CN B2006100860643A CN 200610086064 A CN200610086064 A CN 200610086064A CN 100545992 C CN100545992 C CN 100545992C
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Abstract
The discharge space that the present invention is directed to existing shadow mask plasma display panel is less, discharge path is shorter, fluorescent powder coated area less thereby brightness and the lower a kind of asymmetric shadow mask plasma display panel of problem invention of luminous efficiency with higher brightness and luminous efficiency, it mainly comprises forward and backward substrate and is clipped in the conductive shadow mask that comprises the grid hole array that is used to support forward and backward substrate in the forward and backward substrate, its each grid hole and addressing electrode and scan electrode intersect vertically, and form basic discharge cell.The under shed that the invention is characterized in scan electrode and conductive shadow mask grid hole departs from the discharge cell center simultaneously, and both offset directions are opposite, therefore prolong discharge path between scan electrode and addressing electrode, increased the surface covered of fluorescent material, thereby improved the brightness and the luminous efficiency of display panel.
Description
Technical field
The present invention relates to a kind of plasma display panel, relate in particular to shadow mask plasma display panel, specifically a kind of asymmetric shadow mask plasma display panel.
Background technology
Conventional shadow mask plasma display panel mainly comprises prebasal plate, metacoxal plate and shadow mask.Metacoxal plate comprises the back substrate glass substrate, and the addressing electrode that forms on the back substrate glass substrate is having the dielectric layer that forms on the back substrate glass substrate of addressing electrode, the protective layer that forms on dielectric layer; Substrate glass substrate and on the lower surface of preceding substrate glass substrate, form scan electrode with the addressing electrode spatial vertical before prebasal plate comprises, the dielectric layer that forms on the lower surface of the preceding substrate glass substrate that scan electrode is arranged is at the protective layer of dielectric layer lower surface formation; Being clipped in the middle shadow mask of forward and backward substrate is the thin web plate that comprises the mesh array that is processed by electric conducting material (for example iron or its alloy).To charge into predetermined working gas after above-mentioned prebasal plate, shadow mask and the metacoxal plate assembling sealing-in, for example various inert gases have promptly formed shadow mask plasma display panel.The operation principle of this plasma display panel is as follows: at first, add a high voltage narrow pulse or slope pulsed erase signal between address electrodes of address electrode group and scan electrode, wipe the wall electric charge of discharge accumulation last time; On scan electrode, add a high impulse addressing voltage then and choose this row, on addressing electrode, apply simultaneously the data pulse of this row, the difference of this data pulse voltage amplitude and scanning voltage is higher than the firing voltage between scan electrode and the addressing electrode, control triggers discharge, thereby forms the wall CHARGE DISTRIBUTION corresponding with required display message at this row; After finishing whole screen image initial discharge line by line, between scan electrode group and addressing electrode, apply and keep discharge pulse, to show this two field picture.Circulation like this is display image frame by frame.For colour plasma display board, the coated inner wall three primary colors fluorescent powder of shadow mask, the plasma resonance vacuum-ultraviolet light that gas discharge forms in each discharge cell excites different fluorescent materials to send corresponding three primary colors light.Yet have following problem in the above-mentioned shadow mask plasma display panel: 1. owing to adopt subtend formula discharging structure, discharge space is less, and discharge path is shorter, so discharging efficiency is lower.2. owing to but the area of coating fluorescent powder on the shadow mask hole wall is less, so brightness is lower.3. because region of discharge is far away apart from phosphor powder layer, and the 147nm vacuum-ultraviolet light of discharge generation is big in resonance absorption loss in the fluorescent material radiative process, so brightness and luminous efficiency are lower.
Summary of the invention
The objective of the invention is at the discharge space of existing shadow mask plasma display panel less, discharge path is shorter, fluorescent powder coated area less thereby brightness and the lower a kind of asymmetric shadow mask plasma display panel with higher brightness and luminous efficiency of problem invention of luminous efficiency.
Technical scheme of the present invention is:
A kind of asymmetric shadow mask plasma display panel, comprise metacoxal plate 1, prebasal plate 2, shadow mask 3, wherein shadow mask 3 is positioned at forward and backward substrate 1, between 2, described metacoxal plate 1 is main by back substrate glass substrate 4, form as first electrode 5, dielectric layer 6, the diaphragm 7 of row electrode group or address electrodes of address electrode group, wherein first electrode 5 is positioned on the back substrate glass substrate 4, and dielectric layer 6 covers on first electrode 5, and 7 of diaphragms cover on the dielectric layer 6; Described prebasal plate 2 is mainly by preceding substrate glass substrate 8; second electrode 9 as column electrode group or scan electrode group; dielectric layer 10; diaphragm 11 is formed; before wherein second electrode 9 is positioned on substrate glass substrate 8 lower surfaces and with metacoxal plate 1 on 5 one-tenth spatial vertical quadratures of first electrode; dielectric layer 10 covers on second electrode 9; 11 of diaphragms cover on the dielectric layer 10; it is characterized in that described shadow mask 3 is one to comprise the conductive plate of grid hole 12 arrays; described grid hole 12 and prebasal plate 2 relative upper shed areas are 1～20 times of the relative under shed area of itself and metacoxal plate 1; and the off(-)center of upper and lower opening; centre-to-centre spacing is 0.15～0.35 times of cell columns direction length; second electrode 9 departs from the cell columns at 0.1～0.4 times at grid hole 12 upper shed centers to length; and second electrode 9 is opposite with the offset direction of grid hole 12 under sheds; each grid hole 12 and first electrode 5 and second electrode 9 intersect vertically, described shadow mask grid hole 12; cover the medium blocking type alternating current discharge elementary cell of first electrode 5 with second electrode, 9 formation, one unsymmetric structure that is coated with dielectric layer 10 of dielectric layer 6.
The present invention has also further taked following technical measures:
It is 0.01～0.9 shadow mask thickness that the position of the row that the back side of the shadow mask 3 that contacts with metacoxal plate 1 is formed corresponding to first electrode 5 forms the degree of depth, width is the groove array 13 of 0.1～1.5 times first electrode, 5 width, this groove 13 connects the adjacent net checkerwork cell 12 of column direction, and extends to the shadow mask frame always.
The upper shed of shadow mask grid hole 12 can be strip, quadrangle, circle, trapezoidal, " T " font, hexagon or octagon, under shed also can be strip, quadrangle, circle, trapezoidal, " T " font, hexagon or octagon, but and the structure combination in any of upper and lower opening.
The present invention has the following advantages:
1. after applying suitable firing voltage on second electrode 9 and first electrode 5, promptly produce in the plasma display panel discharge cell of the present invention and tiltedly draw discharge, this oblique discharge had both had the advantage of surface discharge structure discharge path 16 length, can improve luminous efficiency, have the low characteristics of subtend discharging structure operating voltage again, can reduce power consumption.2. the under shed of shadow mask grid hole 12 is far smaller than upper shed, makes the area of grid hole perisporium increase greatly, but the surface covered of fluorescent material increase greatly, thereby can improve display brightness, improve luminous efficiency.
Description of drawings
Fig. 1 is the structural representation for display panel of the present invention.
Fig. 2 is a shade mask structure schematic diagram of the present invention.
Fig. 3 is the structure front view of strip groove shadow mask of the present invention.
Fig. 4 is the encapsulating structure schematic diagram of display panel of the present invention.
Fig. 5 is the second electrode arranging structure schematic diagram of the present invention.
Fig. 6 is the structural representation of the various shadow mask grid holes of the present invention.
Fig. 7 is the comparison of three kinds of discharge modes, and wherein (a) is the surface discharge structure, (b) is the subtend discharging structure, (c) is asymmetric oblique discharging structure.
Embodiment
The present invention is further illustrated for following structure drawings and Examples.
Embodiment one.
Shown in Fig. 1-4.
A kind of asymmetric shadow mask plasma display panel comprises metacoxal plate 1, prebasal plate 2, shadow mask 3, and wherein shadow mask 3 is positioned between the forward and backward substrate 1,2.Described metacoxal plate 1 mainly is made up of back substrate glass substrate 4, first electrode 5, dielectric layer 6, diaphragm 7, wherein first electrode 5 (being commonly referred to row electrode group or address electrodes of address electrode group) is positioned on the back substrate glass substrate 4, dielectric layer 6 covers on first electrode 5, and diaphragm 7 (magnesium oxide) then covers on the dielectric layer 6; Described prebasal plate 2 mainly is made up of preceding substrate glass substrate 8, second electrode 9, dielectric layer 10, diaphragm 11; before wherein second electrode 9 (being commonly referred to column electrode group or scan electrode group) is positioned on substrate glass substrate 8 lower surfaces and with metacoxal plate 1 on 5 one-tenth spatial vertical quadratures of first electrode; dielectric layer 10 covers on second electrode 9, and 11 of diaphragms cover on the dielectric layer 10.The shadow mask 3 that is clipped between the front- back baseboard 1,2 is conductive plates that comprise grid hole 12 arrays, its material can be coated with the nonmetallic materials of conductive material membrane for iron, iron containing alloy, other metal alloys or surface, its thickness d is 0.1～1.0mm, the upper shed area that grid hole 12 in the shadow mask 3 contacts with prebasal plate 2 is 1～20 times of its under shed area that contacts with metacoxal plate 1, and the upper and lower opening centre-to-centre spacing of grid hole 12 is cell columns 0.15～0.35 times to length.Second electrode 9 departs from the cell columns at 0.1～0.4 times at grid hole 12 upper shed centers to length, and second electrode 9 is opposite with the offset direction of grid hole 12 under sheds, and each grid hole 12 and first electrode 5 and second electrode 9 intersect.The effect of shadow mask 3 is as follows: on the one hand, shadow mask 3 supports front- back baseboard 1,2; Shadow mask grid hole 12, second electrode 9 that applies dielectric layer 10 and coating dielectric layer 6 first electrodes 5 form the medium blocking type alternating current discharge elementary cell of unsymmetric structures on the other hand.The sealing-in frame of making of low-melting glass all around 14 of prebasal plate 2, shadow mask 3, metacoxal plate 1 is carried out hermetic seal, outside the viewing area, in the sealing-in frame 14, blast pipe 15 is set, link to each other with vacuum system by this blast pipe, can carry out vacuum degassing to above-mentioned device, and fill with behind the required working gas of certain air pressure with the vacuum system sealed-off, this has just formed plasma display panel provided by the present invention.The operation principle of this plasma display panel is as follows: if with the first electrode group 5 as addressing electrode, the second electrode group 9 is made scan electrode, with shadow mask 3 as public electrode or suspension, at first, between address electrodes of address electrode group and scan electrode, add a high voltage narrow pulse or slope pulsed erase signal, wipe the wall electric charge of discharge accumulation last time; On scan electrode, add a negative high voltage addressing pulse then and choose this row, on addressing electrode, apply simultaneously the positive data pulse corresponding with this row display message, the difference of this data pulse voltage amplitude and scanning voltage is higher than the firing voltage between scan electrode and the addressing electrode, control triggers discharge, thereby forms the wall CHARGE DISTRIBUTION corresponding with required display message at this row; After finishing whole screen image initial discharge line by line, between scan electrode group 9 and addressing electrode 5, apply and keep discharge pulse, to show this two field picture.Circulation like this is display image frame by frame.
Embodiment two.
In embodiment one, forming the degree of depth at the lower surface of the shadow mask 3 that contacts with metacoxal plate 1 corresponding to the position of row electrode group 5 is that (d is the thickness of shadow mask 3 to 0.01d～0.9d, be generally 0.1～1.0mm), width is the groove 13 of 0.1～1.5 times row electrode width, as Fig. 3, this groove 13 connects column direction adjacent net checkerwork cell, and extends to the shadow mask frame always.This has just formed second kind of embodiment provided by the present invention, and its operation principle is with first kind of embodiment.
Embodiment three.
In the foregoing description one, two, each grid hole is that second electrode 9 in the discharge cell is the parallel pole group of many strip electrodes, or adds a vertical electrode on the parallel pole group, and its length is that 0.1～0.8 times of cell columns is to length, as Fig. 5, just constituted third embodiment of the present invention group.
Embodiment four.
In the foregoing description one, two, shadow mask grid hole 12 forms the upper shed of arbitrary polygon structures such as strips, quadrangle, circle, trapezoidal, " T " font, hexagon or octagon, and the under shed of arbitrary polygon structure such as strip, quadrangle, circle, trapezoidal, " T " font, hexagon or octagon, and the structure of upper and lower opening can be according to the said structure combination in any, as Fig. 6, this has just constituted fourth embodiment of the present invention group.
Embodiment five.
In the foregoing description one to four, if apply ultraviolet excited fluorescence powder 17 at shadow mask grid hole perisporium, and fill with suitable working gas, the ultraviolet excitation ultraviolet fluorescence powder that makes it to produce respective wavelength sends visible light, thereby realize that image shows that this has just constituted fifth embodiment of the present invention group.
Embodiment six.
In the foregoing description one to four, if apply red, green, blue three primary colors ultraviolet excited fluorescence powder 17 successively at shadow mask grid hole array, and fill with suitable working gas, the ultraviolet excitation ultraviolet fluorescence powder that makes it to produce respective wavelength sends red, green, blue three primary colors visible light, can realize that coloured image shows that this has just constituted the 6th kind of embodiment group of the present invention.
Claims (7)
1, a kind of asymmetric shadow mask plasma display panel, comprise metacoxal plate (1), prebasal plate (2), shadow mask (3), wherein shadow mask (3) is positioned at forward and backward substrate (1,2) between, described metacoxal plate (1) mainly is made up of back substrate glass substrate (4), first electrode (5) as row electrode group or address electrodes of address electrode group, first dielectric layer (6), first diaphragm (7), wherein first electrode (5) is positioned on the back substrate glass substrate (4), first dielectric layer (6) covers on first electrode (5), and first diaphragm (7) then covers on first dielectric layer (6); Described prebasal plate (2) is mainly by preceding substrate glass substrate (8), second electrode (9) as column electrode group or scan electrode group, second dielectric layer (10), second diaphragm (11) is formed, become the spatial vertical quadrature on substrate glass substrate (8) lower surface and with first electrode (5) on the metacoxal plate (1) before wherein second electrode (9) is positioned at, second dielectric layer (10) covers on second electrode (9), second diaphragm (11) then covers on second dielectric layer (10), it is characterized in that described shadow mask (3) is one to comprise the conductive plate of grid hole (12) array, the upper shed area that described grid hole (12) is relative with prebasal plate (2) is 1～20 times of its under shed area relative with metacoxal plate (1), and the off(-)center of upper and lower opening, centre-to-centre spacing is cell columns 0.15～0.35 times to length, second electrode (9) departs from the cell columns at 0.1～0.4 times at center of grid hole (12) upper shed to length, and second electrode (9) is opposite with the offset direction of grid hole (12) under shed; Each grid hole (12) and first electrode (5) are all vertical with second electrode (9), and described shadow mask grid hole (12), second electrode (9) that is coated with first electrode (5) of first dielectric layer (6) and is coated with second dielectric layer (10) form the medium blocking type alternating current discharge elementary cell of a unsymmetric structure.
2, asymmetric shadow mask plasma display panel according to claim 1, it is 0.01～0.9 times shadow mask thickness that the position of the row that the back side that it is characterized in that the shadow mask (3) that contacts with metacoxal plate (1) is formed corresponding to first electrode (5) forms the degree of depth, width is the groove array (13) of 0.1～1.5 times first electrode (5) width, this groove (13) connects the adjacent net checkerwork cell (12) of column direction, and extends to the shadow mask frame always.
3, asymmetric shadow mask plasma display panel according to claim 1, it is characterized in that second electrode (9) in the corresponding alternating current discharge elementary cell of each grid hole (12) or form by some parallel electrodes, or form by some parallel electrodes and a vertical electrode, the length of described vertical electrode is that 0.1～0.8 times cell columns is to length.
4, asymmetric shadow mask plasma display panel according to claim 1, the upper shed that it is characterized in that shadow mask grid hole (12) is quadrangle, circle, " T " font, hexagon or octagon, under shed also is quadrangle, circle, " T " font, hexagon or octagon, and the structure of upper and lower opening is the combination of described shape.
5, asymmetric shadow mask plasma display panel according to claim 4 is characterized in that described quadrangle is trapezoidal.
6, asymmetric shadow mask plasma display panel according to claim 1 is characterized in that grid hole (12) the perisporium part on the shadow mask (3) or all applies monochromatic ultraviolet excitated fluorescent powder (17).
7, asymmetric shadow mask plasma display panel according to claim 1 is characterized in that grid hole (12) perisporium of shadow mask (3) applies red, green, blue three primary colors ultraviolet fluorescence powder (17) successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100860643A CN100545992C (en) | 2006-07-21 | 2006-07-21 | Asymmetric shadow mask plasma display panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100860643A CN100545992C (en) | 2006-07-21 | 2006-07-21 | Asymmetric shadow mask plasma display panel |
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| Publication Number | Publication Date |
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| CN1889223A CN1889223A (en) | 2007-01-03 |
| CN100545992C true CN100545992C (en) | 2009-09-30 |
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| CNB2006100860643A Expired - Fee Related CN100545992C (en) | 2006-07-21 | 2006-07-21 | Asymmetric shadow mask plasma display panel |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009152661A1 (en) * | 2008-06-20 | 2009-12-23 | 南京华显高科有限公司 | A plasma display panel |
| CN101474611B (en) * | 2009-02-18 | 2011-01-26 | 南京华显高科有限公司 | Shadow mask aligning workstation |
| CN109767966A (en) * | 2018-12-27 | 2019-05-17 | 西安交通大学 | A kind of microcavity discharge ultraviolet radioactive device and preparation method thereof and microcavity array based on it |
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Granted publication date: 20090930 Termination date: 20120721 |