CN1139962C - Colour plasma Display panel - Google Patents
Colour plasma Display panel Download PDFInfo
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- CN1139962C CN1139962C CNB001047612A CN00104761A CN1139962C CN 1139962 C CN1139962 C CN 1139962C CN B001047612 A CNB001047612 A CN B001047612A CN 00104761 A CN00104761 A CN 00104761A CN 1139962 C CN1139962 C CN 1139962C
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Abstract
The present invention relates to a plasma display panel which comprises a back plate, a front plate, and a gap between the back plate and the front plate. A plurality of partition walls are arranged in the gap to form a plurality of discharge space groups, and each discharge space group has a first discharge space and a second discharge space. A first transverse wall is arranged in the first discharge space; a second transverse wall is arranged in the second discharge space; the lateral length of the second transverse wall is smaller than that of the first transverse wall. A first fluorescent layer is coated on a back plate surface corresponding to the first discharge space, a side wall of the first transverse wall and the partition walls surrounding the first discharge space. A second fluorescent layer is coated on a back plate surface corresponding to the second discharge space, a side wall of the second transverse wall and the partition walls surrounding the second discharge space.
Description
Technical field
The present invention relates to a kind of chromatic plasma display panel, particularly relate to a kind of area coverage of fluorescence coating of can adjusting to improve the chromatic plasma display panel of colour temperature.
Background technology
Chromatic plasma display panel (Plasma Display Panel, PDP) be to be arranged in a combination by hundreds thousand of individual display units of hundreds of microns approximately, its principle of luminosity is to apply a voltage to make ionized gas discharge and produce ultraviolet ray, when ultraviolet irradiation difference fluorophor, just can make fluorophor send the three primary colors of light: red, green and blue.Generally speaking, the color that fluorophor sent is to depend on employed fluorescent material.When fluorescent material is yttrium borate salt ((Y, Gd) BO
3), and add erbium (Eu) as luminescence center, then can produce red fluorescence; When fluorescent material is zinc sulfate (Zn
2SO
4), and add manganese (Mn) as luminescence center, then can produce green fluorescence; When fluorescent material is magnesium aluminate barium salt (BaMgAl
14O
23), and add erbium (Eu) as luminescence center, then can produce blue-fluorescence.But the blue-fluorescence that fluorophor sent has Yin Re and sends the phenomenon of color deterioration.Improve the method for chromatic plasma display panel luminous mass at present, be that the discharge space of blue-fluorescence is strengthened to increase the area coverage of its fluorophor, can adjust the proportion of redness that chromatic plasma display panel sends, green and blue-fluorescence, make colour temperature bring up to 11000 ° of K by 7000 ° of K.
Please refer to Fig. 1, it is the schematic diagram of existing chromatic plasma display panel 10.Existing chromatic plasma display panel 10 includes two parallel first substrate 12 and second substrates 14, one ionized gas is filled between first, second substrate 12,14, a plurality of first electrodes 18, a plurality of second electrodes 20 and a plurality of addressing-electrode (address electrode) 22.Wherein each first electrode 18 and second electrode 20 are arranged on first substrate 12 parallel to each other, and each addressing-electrode 22 is to be arranged on second substrate 14 with the perpendicular mode of first electrode 18 and second electrode 20.Each first electrode 18, second electrode 20 are kept electrode 181,201 and are made up of the auxiliary electrode 182,202 that chromium/copper/chromium (Cr/Cu/Cr) three-layer metal material is constituted by what the ITO material constituted, can be bigger but wherein keep electrode 181,201 by part visible light resistance value, and auxiliary electrode 182,202 has good conductivity, can effectively increase the conductivity of first electrode 18 and second electrode 20.
Chromatic plasma display panel 10 includes a dielectric layer 24 in addition and covers on first substrate 12; one protective layer 26 is covered on the dielectric layer 24; a plurality of barrier ribs (barrier rib) 28 is located on second substrate 14 in mode parallel to each other; be used for isolating two adjacent addressing-electrodes 22; with the discharge space (discharge space) 30 that forms a plurality of strips; and one fluorescence coating 32 be coated on each bar discharge space 30 bottom and barrier rib 28 sidewalls, be used for producing redness, green or blue light.Wherein each bar discharge space 30 has included a plurality of display units (unit display element) 34, is arranged between first substrate 12 and second substrate 14 and all display units 34 are modes with matrix.In addition, all strip discharge spaces 30 are made of a plurality of discharge space groups, and the red discharge space 30R, that each discharge space group includes a coated red fluorescence coating 32R applies the green discharge space 30G of green fluorescence layer 32G and the blue discharge space 30B of a coating blue fluorescent body 32B.Therefore can form a plurality of red display unit 34R in the red discharge space 30R, can form a plurality of green display unit 34G in the green discharge space 30G, can form a plurality of blue display unit 34B in the blue discharge space 30B.Red display unit 34R, a green display unit 34G and a blue display unit 34B are commonly referred to as a pixel (pixel).
In order to improve the blue-fluorescence quality that chromatic plasma display panel 10 is sent, it is the narrowest that existing method is that the A/F with red discharge space 30R is designed to, and the A/F of green discharge space 30G is designed to moderate 1.2 times of being about red discharge space 30R A/F.In addition, the A/F of blue discharge space 30B is designed to the wideest, is about 1.6 times of A/F of red discharge space 30R, make the space minimum of red display unit 34R, the space that makes blue display unit 34B is for maximum.Thus, the surface area that is coated on the blue fluorescent body 34B of blue display unit 34B can be maximum, and be coated on the surface area meeting minimum of the red fluorescence layer 32B of red display unit 34R.When ionized gas discharge generation visible light, the proportion of the blue-fluorescence that is sent can be bigger, make redness, green mix knifeedge with blue-fluorescence and reach preferable white balance (white balance) state, thereby the colour temperature of chromatic plasma display panel 10 is brought up to about 11000 ° of K.
Because the A/F of discharge space 30 is designed in the mode of fixed proportion, when panel resolution rate increases and all discharge spaces 30 when all being required to dwindle, it is very little that the A/F of red discharge space 30R will be designed to be.In manufacturing process, not only can increase the making difficulty of barrier rib 28 and red fluorescence layer 32R, when involution first substrate 12, second substrate 14, also can produce the problem of contraposition.And, because the A/F of red discharge space 30R is narrow, also is easy to make the ionized gas leap (cross talk) of discharge to adjacent discharge space 30, to produce interference, thereby influences the electrical performance of color plasma display 10.
Summary of the invention
The object of the present invention is to provide a kind of chromatic plasma display panel that can improve colour temperature, not only can increase the area coverage of fluorescence coating, the problem that can also avoid prior art on making, to produce.
The objective of the invention is such realization, a kind of chromatic plasma display panel promptly is provided, it includes: a back plate; One header board, this header board are arranged on this back plate, and have a gap between this header board and the back plate; A plurality of barrier ribs (barrier rib) are arranged in this gap, are used for constituting a plurality of discharge space groups, and each discharge space group contains blueness, green, red discharge space; One first transverse wall (traverse rib) is set in this blueness discharge space; One second transverse wall is set in this green discharge space; And the lateral length of this second transverse wall is less than the lateral length of first transverse wall; One blue fluorescent body is coated on plate surface, the pairing back of this blueness discharge space, the first transverse wall sidewall surfaces and around the barrier rib sidewall surfaces of blue discharge space; And a green fluorescence layer, be coated on plate surface, the pairing back of this green discharge space, the second transverse wall sidewall surfaces and around the barrier rib sidewall surfaces of this green discharge space; One red fluorescence layer is coated on plate surface, the pairing back of this redness discharge space and reaches the barrier rib sidewall surfaces that centers on this redness discharge space; So make the area coverage of the area coverage of this first fluorescence coating, make the area coverage of the area coverage of red fluorescence layer less than the green fluorescence layer greater than this second fluorescence coating.
The present invention also provides a kind of chromatic plasma display panel, and it includes: a back plate; One header board, this header board are arranged on this back plate, and have a gap between this header board and the back plate; A plurality of barrier ribs (barrier rib) are arranged in this gap, are used for constituting a plurality of discharge space groups, and each discharge space group contains blueness, green and red discharge space; One first transverse wall is set in blue discharge space; One second transverse wall is set in this green discharge space; And this second transverse wall directly to length less than first transverse wall directly to length; One blue fluorescent body is coated on plate surface, the pairing back of this blueness discharge space, the first transverse wall sidewall surfaces and around the barrier rib sidewall surfaces of this blueness discharge space; And a green fluorescence layer, be coated on plate surface, the pairing back of this green discharge space, the second transverse wall sidewall surfaces and around the barrier rib sidewall surfaces of this green discharge space; One red fluorescence layer is coated on plate surface, the pairing back of this redness discharge space and reaches the barrier rib sidewall surfaces that centers on this redness discharge space; So make distance between the first transverse wall sidewall surfaces and this discharge space central point less than the distance between this second transverse wall sidewall surfaces and this discharge space central point, therefore the luminous intensity of this blue fluorescent body is greater than the luminous intensity of this green fluorescence layer, and the area coverage of this red fluorescence layer is less than the area coverage of green fluorescence layer.
Description of drawings
Below in conjunction with accompanying drawing, describe embodiments of the invention in detail, wherein:
Fig. 1 is the schematic diagram of existing chromatic plasma display panel;
Fig. 2 is the schematic diagram of the chromatic plasma display panel of first embodiment of the invention;
Fig. 3 is the top view of a plurality of barrier ribs shown in Figure 2;
Fig. 4 is the top view of a plurality of barrier ribs of second embodiment of the invention;
Fig. 5 is the top view of a plurality of barrier ribs of third embodiment of the invention.
Embodiment
Please refer to Fig. 2 and Fig. 3, Fig. 2 is the schematic diagram of the chromatic plasma display panel 40 of first embodiment of the invention, and Fig. 3 is the top view of a plurality of barrier ribs 56 shown in Figure 2.The chromatic plasma display panel 40 of first embodiment of the invention includes a back plate 42; one header board 44 is arranged on the plate 42 of back abreast; one ionized gas is filled between back plate 42 and the header board 44; a plurality of first electrodes 46, second electrode 48 and addressing-electrode 50; one dielectric layer 52 is covered on the header board 44, and a protective layer 54 is covered on the dielectric layer 52.Wherein each first electrode 46 and second electrode 48 are to be arranged on the header board 44 in mode parallel to each other, and each addressing-electrode 50 is to be arranged on the plate 42 of back with first electrode 46 mode vertical with second electrode 48.Each first electrode 46 and each second electrode 48 are kept electrode 461,481 and narrower 462,482 compositions of auxiliary electrode of a live width by a live width broad.Wherein keep electrode the 461, the 481st, be used for carrying out surface discharge, have light transmission, can use ITO (Indium Tin Oxide) or SnO (Tin Oxide) as the material of keeping electrode 461,481.But its resistance value is bigger.Auxiliary electrode the 462, the 482nd can increase the conductivity of first electrode 46 and second electrode 48, has good conductivity, can use chromium/copper/chromium (Cr/Cu/Cr) three-layer metal or silver (Ag) metal as material.
Chromatic plasma display panel 40 comprises that a plurality of barrier ribs 56 are fixed on the plate 42 of back in parallel to each other and equidistant mode, are used for constituting a plurality of discharge space groups.Chromatic plasma display panel 40 comprises a plurality of first transverse walls 66 in addition, a plurality of second transverse walls 64, and a plurality of fluorescence coating is covered in all discharge space groups.Each discharge space group includes a red discharge space 60R, a green discharge space 60G and a blue discharge space 60B.The sidewall surfaces of the barrier rib 56 in the blue discharge space 60B is provided with two first transverse walls 66 perpendicular to barrier rib 56, and first transverse wall 66 all links to each other with adjacent two barrier ribs.The sidewall surfaces of the barrier rib 56 in the green discharge space 60G is provided with four to projecting inward but disjunct second transverse wall 64 in the left and right sides.A plurality of fluorescence coatings include a red fluorescence layer 58R, a green fluorescence layer 58G and a blue fluorescent body 58B.Blue fluorescent body 58B is coated on plate 42 surfaces, the pairing back of blue discharge space 60B, first transverse wall, 66 sidewall surfaces reach barrier rib 56 sidewall surfaces around blue discharge space 60B, is used for producing a blue ray.Green fluorescence layer 58G is coated on plate 42 surfaces, the pairing back of green discharge space 60G, second transverse wall, 64 sidewall surfaces reach barrier rib 56 sidewall surfaces around green discharge space 60G, is used for producing a green light.Red fluorescence layer 58R is coated on the pairing back of red discharge space 60R plate 42 surperficial barrier rib 56 sidewall surfaces that reach around red discharge space 60R, is used for producing a red light.
As shown in Figure 3, first transverse wall 66 and second transverse wall 64 are directly to identical length together, but the lateral length 66a of first transverse wall 66 is greater than the lateral length 64a of second transverse wall 64, this makes the barrier rib 56 in the blue discharge space 60B and the surface area maximum of first transverse wall 66, the barrier rib 56 in the green discharge space 60G and the surface area of second transverse wall 64 take second place, barrier rib 56 in the red discharge space 62R is not because comprise horizontal barrier rib, so its surface area minimum.In other words, it is maximum that the blue fluorescent body 58B area coverage in the blue discharge space 60B becomes, and it is minimum that the red fluorescence layer 58R area coverage in the red discharge space 60R becomes.Simultaneously, the shortest because of increasing by first transverse wall 66 in blue emitting phophor and the distance between blue discharge space 60B central point that first transverse wall, 66 sidewall surfaces increase, the green-emitting phosphor and the distance between green discharge space 60G central point that increase in second transverse wall, 64 sidewall surfaces are longer, red discharge space 60R does not have transverse wall and makes the distance of red-emitting phosphors and red discharge space 60R central point maximum, so luminous intensity maximum of blue fluorescent body 58B, the luminous intensity of green fluorescence layer 58G is taken second place, the luminous intensity minimum of red fluorescence layer 58R.When ionized gas discharge generation visible light, the proportion of the blue-fluorescence that is sent can be bigger, mix the white balance state that just can reach preferable by red, green knifeedge with blue-fluorescence, the colour temperature of chromatic plasma display panel 40 is brought up to about 11000 ° of K.
When all discharge spaces all are required to dwindle, barrier rib 56 still can be kept the mode of equidistant arrangement, adjust the area coverage of the fluorescence coating in each discharge space by first transverse wall 66, second transverse wall 64 that different sizes are set on barrier rib 56 sidewall surfaces, and do not need excessively to shorten the spacing between the barrier rib 56.So not only can reduce the difficulty in the making, can also avoid ionized gas in the discharge space to disturb (cross talk) to adjacent discharge space and influence the electrical performance of chromatic plasma display panel 40.
By changing size, shape or the set-up mode of transverse wall, also can adjust the area coverage of the fluorescence coating in each discharge space.Please refer to Fig. 4, Fig. 4 is the top view of a plurality of barrier ribs 56 of second embodiment of the invention.The chromatic plasma display panel 40 of second embodiment of the invention is that a plurality of being parallel to each other and equidistant barrier rib 56 is set, and on the sidewall surfaces of the two adjacent barrier ribs 56 that constitute each blue discharge space 60B, be provided with a plurality of to projecting inward but disjunct first transverse wall 70 in the left and right sides, on the sidewall surfaces of the two adjacent barrier ribs 56 that constitute each green discharge space 60G, be provided with a plurality of to projecting inward but disjunct second transverse wall 69 in the left and right sides, on the sidewall surfaces of the two adjacent barrier ribs 56 that constitute each red discharge space 60R, be provided with a plurality of to projecting inward but disjunct the 3rd transverse wall 68 in the left and right sides.All be provided with in each discharge space to projecting inward but disjunct transverse wall, so can avoid each discharge space complete closed, help front and rear panel when involution, to extract the carrying out that includes gas step out.Wherein first transverse wall 70, second transverse wall 69 and the 3rd transverse wall 68 is directly same to identical length, but the lateral length 70a maximum of first transverse wall 70, and the lateral length 69a of second transverse wall 69 takes second place, the lateral length 68a minimum of the 3rd transverse wall 68.Thus, barrier rib 56 in the blue discharge space 60B and the surface area on first transverse wall 70 can be maximum, barrier rib 56 in the green discharge space 60G and the surface area on second transverse wall 69 take second place, barrier rib 56 in the red discharge space 60R and the surface area minimum on the 3rd transverse wall 68.Therefore, the area coverage of the blue fluorescent body 58B in the blue discharge space 60B can be maximum, and the area coverage of the red fluorescence layer 58R in the red discharge space 60R can be minimum.Simultaneously, distance between fluorophor on first transverse wall, 70 sidewall surfaces and blue discharge space 60B central point is maximum, distance between fluorophor on second transverse wall, 69 sidewall surfaces and green discharge space 60G central point is taken second place, and the distance between fluorophor on the 3rd transverse wall 68 sidewall surfaces and red discharge space 60R central point is minimum.Because of the plasma concentration of discharge space centre the strongest, event is strong more near the ultraviolet ray that the fluorophor of discharge space central authorities is accepted more, so luminous intensity maximum of blue fluorescent body 58B, the luminous intensity of green fluorescence layer 58G is taken second place, the luminous intensity minimum of red fluorescence layer 58R, can increase the proportion of the blue-fluorescence that chromatic plasma display panel 40 sent, and colour temperature is brought up to about 11000 ° of K.
Please refer to Fig. 5, it is the top view of a plurality of barrier ribs 56 of third embodiment of the invention.The chromatic plasma display panel 40 of third embodiment of the invention is that a plurality of being parallel to each other and equidistant barrier rib 56 is set, and on the sidewall surfaces of the two adjacent barrier ribs 56 that constitute each blue discharge space 60B, be provided with a plurality of to projecting inward but disjunct first transverse wall 76 in the left and right sides, on the sidewall surfaces of the two adjacent barrier ribs 56 that constitute each green discharge space 60G, be provided with a plurality of to projecting inward but disjunct second transverse wall 74 in the left and right sides, on the sidewall surfaces of the two adjacent barrier ribs 56 that constitute each red discharge space 60R, be provided with a plurality of to projecting inward but disjunct the 3rd transverse wall 72 in the left and right sides.Wherein first transverse wall 76, second transverse wall 74 are all identical with the lateral length of the 3rd transverse wall 72, but first transverse wall 76 directly to length 76b maximum (being about 320 μ m), directly taking second place (being about 160 μ m) of second transverse wall 74 to length 74b, the 3rd transverse wall 72 directly to length 72b minimum (being about 80 μ m).Thus, the fluorophor in the blue discharge space 60B on first transverse wall, 76 side surfaces can be near the central point of discharge space 60, just near the strength of plasma concentration, the uitraviolet intensity that fluorophor is accepted is the strongest.The central point distance of fluorophor in the green discharge space 60G on second transverse wall, 74 side surfaces and discharge space 60 is moderate, fluorophor in the red discharge space 60R on the 3rd transverse wall 72 side surfaces is away from the central point of discharge space 60, so the uitraviolet intensity that its fluorophor is accepted is the most weak.Therefore, the luminous intensity of blue fluorescent body 58B in the blue discharge space 60B becomes maximum, the luminous intensity of red fluorescence layer 58R in the red discharge space 60R becomes minimum, so can increase the proportion of the blue-fluorescence that chromatic plasma display panel 40 sent, and colour temperature is brought up to about 11000 ° of K.
Compare with existing chromatic plasma display panel 10, chromatic plasma display panel 40 of the present invention is that a plurality of being parallel to each other and equidistant barrier rib 56 is set, and on barrier rib 56 sidewall surfaces the transverse walls of set different sizes, adjusting the area coverage of the fluorescence coating in each discharge space, thereby the colour temperature of chromatic plasma display panel 40 is brought up to about 11000 ° of K.
The above only is preferred embodiment of the present invention, and all equalizations of doing by claim of the present invention change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (4)
1. chromatic plasma display panel, it includes:
One back plate;
One header board, this header board are arranged on this back plate, and have a gap between this header board and the back plate;
A plurality of barrier ribs are arranged in this gap, are used for constituting a plurality of discharge space groups, and each discharge space group contains blueness, green, red discharge space; It is characterized in that,
One first transverse wall is set in this blueness discharge space;
One second transverse wall is set in this green discharge space; And the lateral length of this second transverse wall is less than the lateral length of first transverse wall;
One blue fluorescent body is coated on plate surface, the pairing back of this blueness discharge space, the first transverse wall sidewall surfaces and around the barrier rib sidewall surfaces of blue discharge space; And
One green fluorescence layer is coated on plate surface, the pairing back of this green discharge space, the second transverse wall sidewall surfaces and around the barrier rib sidewall surfaces of this green discharge space;
One red fluorescence layer is coated on plate surface, the pairing back of this redness discharge space and reaches the barrier rib sidewall surfaces that centers on this redness discharge space;
So make the area coverage of the area coverage of this blue fluorescent body, make the area coverage of the area coverage of red fluorescence layer less than the green fluorescence layer greater than this green fluorescence layer.
2. chromatic plasma display panel as claimed in claim 1 wherein should also comprise one the 3rd transverse wall in the redness discharge space, and the lateral length of the 3rd transverse wall is less than the lateral length of this second transverse wall.
3. chromatic plasma display panel, it includes:
One back plate;
One header board, this header board are arranged on this back plate, and have a gap between this header board and the back plate;
A plurality of barrier ribs are arranged in this gap, are used for constituting a plurality of discharge space groups, and each discharge space group contains blueness, green and red discharge space; It is characterized in that,
One first transverse wall is set in blue discharge space;
One second transverse wall is set in this green discharge space; And this second transverse wall directly to length less than first transverse wall directly to length;
One blue fluorescent body is coated on plate surface, the pairing back of this blueness discharge space, the first transverse wall sidewall surfaces and around the barrier rib sidewall surfaces of this blueness discharge space; And
One green fluorescence layer is coated on plate surface, the pairing back of this green discharge space, the second transverse wall sidewall surfaces and around the barrier rib sidewall surfaces of this green discharge space;
One red fluorescence layer is coated on plate surface, the pairing back of this redness discharge space and reaches the barrier rib sidewall surfaces that centers on this redness discharge space;
So make distance between the first transverse wall sidewall surfaces and this discharge space central point less than the distance between this second transverse wall sidewall surfaces and this discharge space central point, therefore the luminous intensity of this blue fluorescent body is greater than the luminous intensity of this green fluorescence layer, and the area coverage of this red fluorescence layer is less than the area coverage of green fluorescence layer.
4. chromatic plasma display panel as claimed in claim 3 wherein should also comprise one the 3rd transverse wall in the redness discharge space, and the 3rd transverse wall directly to length less than this second transverse wall directly to length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001047612A CN1139962C (en) | 2000-03-27 | 2000-03-27 | Colour plasma Display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001047612A CN1139962C (en) | 2000-03-27 | 2000-03-27 | Colour plasma Display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1315741A CN1315741A (en) | 2001-10-03 |
| CN1139962C true CN1139962C (en) | 2004-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001047612A Expired - Fee Related CN1139962C (en) | 2000-03-27 | 2000-03-27 | Colour plasma Display panel |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7649318B2 (en) | 2004-06-30 | 2010-01-19 | Samsung Sdi Co., Ltd. | Design for a plasma display panel that provides improved luminance-efficiency and allows for a lower voltage to initiate discharge |
| CN100353479C (en) * | 2004-11-17 | 2007-12-05 | 南京Lg同创彩色显示系统有限责任公司 | Plasma display device |
| KR100755307B1 (en) * | 2005-12-12 | 2007-09-05 | 엘지전자 주식회사 | A plasma display apparasute |
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2000
- 2000-03-27 CN CNB001047612A patent/CN1139962C/en not_active Expired - Fee Related
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| CN1315741A (en) | 2001-10-03 |
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