CN101312110A - Planar florescent lamp and its fluorescent powder composition - Google Patents
Planar florescent lamp and its fluorescent powder composition Download PDFInfo
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- CN101312110A CN101312110A CNA2007101042340A CN200710104234A CN101312110A CN 101312110 A CN101312110 A CN 101312110A CN A2007101042340 A CNA2007101042340 A CN A2007101042340A CN 200710104234 A CN200710104234 A CN 200710104234A CN 101312110 A CN101312110 A CN 101312110A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
Disclosed is a flat fluorescent lamp, which comprises a plurality of substrates, a plurality of electrode groups, a plurality of supports, a fluorescent layer and discharge gas. The plurality of substrates are in mutual opposite arrangement, the plurality of electrode groups are arranged on one of the plurality of substrates, the plurality of supports is connected with the substrates to form a plurality of discharge spaces among the substrates, and the fluorescent layer and the discharge gas are arranged in the discharge spaces, wherein the fluorescent layer comprises red fluorescent materials, green fluorescent materials and blue fluorescent materials, and the general chemical formula of the red fluorescent materials is (Y1-xEuxPyV1-Y)O4, wherein 0<=x<=0.5, 0<y<1. The general chemical formula of the green fluorescent materials is (Ba1-xMnx)Al12O19, (Zn2-xMnx)SiO4 or the mixture thereof, wherein 0<=x<=0.5. And the general chemical formula of the blue fluorescent materials is (Ba1-xEux)MgAl14O23, wherein 0<=x<=0.5.
Description
Technical field
The invention relates to a kind of flat florescent lamp, and particularly relevant for a kind of fluorescent composition of flat florescent lamp.
Background technology
Along with industry is flourishing day by day, digitization tools such as mobile phone, digital camera, mobile computer, desktop PC develop towards more convenient, greater functionality and direction more attractive in appearance invariably.The display screen of these electronic products is indispensable man-machine communication interfaces, and the display screen of the said goods can be the user and brings more operation convenient.In recent years, display screen on most mobile phone, digital camera, digital code camera, mobile computer and the desktop PC is a main flow with display panels (LCD panel) all, yet, because display panels itself does not have luminous function, so below display panels, must provide backlight module (back light module) so that light source to be provided, and then reach the function of demonstration.
The backlight module of prior art comprise light-emitting diode (LED) backlight module, cathode fluorescent tube backlight module, flat florescent lamp (Flat Fluorescent Lamp, FFL) etc.The flat florescent lamp of prior art comprises that a pair of substrate and a plurality of supporter, multi-group electrode are to, fluorescent material layer and discharge gas.Wherein, fluorescent material layer is disposed between each electrode pair, the space that discharge gas then is positioned at substrate and supporter and is surrounded, and fluorescent material layer comprises the fluorescent material of ruddiness, green glow, blue light.The type of drive of flat florescent lamp is to apply driving voltage earlier to give electrode pair with the generation discharge electric field, and discharge electric field can be ionized into plasma with discharge gas.Afterwards, the electronics that is in excite state in the plasma in each ion can send ultraviolet ray when getting back to ground state, and when fluorescent material was arrived in the ultraviolet irradiation that plasma sent, the meeting excitation fluorescent material was luminous.
U.S. Patent number 6034470 discloses a kind of flat florescent lamp, comprise upper substrate and infrabasal plate, and the discharging chamber that constitutes by upper substrate and infrabasal plate, the upper substrate surface in discharging chamber is coated with fluorescence coating, and this fluorescence coating comprises red fluorescence powder, blue colour fluorescent powder and green emitting phosphor.Wherein red fluorescence powder is (Y, Gd) BO
3: Eu
3+, blue colour fluorescent powder is (BaMgAl
10O
17): Eu
2+, and green emitting phosphor is LaPO
4: (Tb
3+, Ce
3+).
The mixed color saturation of the fluorescent material of the flat florescent lamp of aforementioned prior art is approximately 65～70%, therefore, how to provide a kind of flat florescent lamp, and it has good color saturation, and real is one of important problem.
Summary of the invention
Because above-mentioned, purpose of the present invention just provides a kind of phosphor combination thing, and it has good luminous intensity and color saturation.
A further object of the present invention just provides a kind of flat florescent lamp, and it uses the good phosphor combination thing of color saturation, therefore makes flat florescent lamp possess good performance characteristic.
For reaching above-mentioned or other purpose, the present invention proposes a kind of flat florescent lamp, comprises a plurality of substrates, plurality of electrodes group, a plurality of supporter, fluorescence coating and discharge gas.Opposite each other between a plurality of substrates, the plurality of electrodes assembly place substrate one of them, a plurality of supporters are connected with substrate, constituting a plurality of discharge spaces between substrate, and fluorescence coating and discharge gas are disposed in the discharge space.Wherein fluorescence coating comprises red light flourescent material, green glow fluorescent material and blue-light fluorescent material, and the general chemical formula of red light flourescent material is (Y
1-xEu
xP
yV
1-y) O
4, wherein 0≤x≤0.5,0＜y＜1, the general chemical formula of green glow fluorescent material is (Ba
1-xMn
x) Al
12O
19Or (Zn
2-xMn
x) SiO
4Or its mixture, wherein 0≤x≤0.5.The general chemical formula of blue-light fluorescent material is (Ba
1-xEu
x) MgAl
14O
23, 0≤x≤0.5 wherein.
According to the described flat florescent lamp of the preferred embodiment of the present invention, it also comprises the white light fluorescent material, this white light fluorescent material is mixed by red light flourescent material, green glow fluorescent material and blue-light fluorescent material and forms, the weight ratio of its mixing is respectively 0.1＜a＜0.5,0.3＜b＜0.8 and 0.05＜c＜0.5, and wherein a+b+c is 1.
According to the described flat florescent lamp of the preferred embodiment of the present invention, discharge gas comprises xenon, argon gas, helium or deuterium gas, and when this discharge gas was xenon, the wavelength of its radiation was 172nm.
According to the described flat florescent lamp of the preferred embodiment of the present invention, fluorescence coating is formed at substrate at least on one of them surface, and is disposed in the discharge space.
According to the described flat florescent lamp of the preferred embodiment of the present invention, it comprises that also dielectric layer is covered on the electrode group.
According to the described flat florescent lamp of the preferred embodiment of the present invention, it comprises that also protective layer is disposed on the fluorescence coating.
For reaching above-mentioned or other purpose, the present invention proposes a kind of flat florescent lamp in addition, comprises a plurality of substrates, plurality of electrodes group, a plurality of supporter, fluorescence coating and discharge gas.Opposite each other between a plurality of substrates, the plurality of electrodes assembly place substrate one of them, a plurality of supporters are connected with substrate, constituting a plurality of discharge spaces between substrate, and fluorescence coating and discharge gas are disposed in the discharge space.Wherein fluorescence coating comprises red light flourescent material, green glow mixing fluorescent material and blue-light fluorescent material, and the general chemical formula of red light flourescent material is (Y
1-xEu
xP
yV
1-y) O
4, wherein 0≤x≤0.5,0＜y＜1, green glow mixing fluorescent material is selected from (Zn
2-xMn
x) SiO
4And (Ba
1-xMn
x) Al
12O
19The mixture of being formed, wherein 0≤x≤0.5.The general chemical formula of blue-light fluorescent material is (Ba
1-xEu
x) MgAl
14O
23, 0≤x≤0.5 wherein.
For reaching above-mentioned or other purpose, the present invention reintroduces a kind of phosphor combination thing, comprises red light flourescent material, green glow fluorescent material and blue-light fluorescent material, and wherein the general chemical formula of red light flourescent material is (Y
1-xEu
xP
yV
1-y) O
4, wherein 0≤x≤0.5,0＜y＜1.
For reaching above-mentioned or other purpose, the present invention also proposes a kind of phosphor combination thing, comprises red light flourescent material, green glow fluorescent material and blue-light fluorescent material, and wherein the general chemical formula of green glow fluorescent material is (Ba
1-xMn
x) Al
12O
19Or (Zn
2-xMn
x) SiO
4, 0≤x≤0.5 wherein.
For reaching above-mentioned or other purpose, the present invention also proposes a kind of phosphor combination thing, comprises red light flourescent material, green glow fluorescent material and blue-light fluorescent material, and wherein the general chemical formula of blue-light fluorescent material is (Ba
1-xEu
x) MgAl
14O
23, 0≤x≤0.5 wherein.
For reaching above-mentioned or other purpose, the present invention also proposes a kind of phosphor combination thing, comprises red light flourescent material, green glow mixing fluorescent material and blue-light fluorescent material, and wherein the general chemical formula of red light flourescent material is (Y
1-xEu
xP
yV
1-y) O
4, wherein 0≤x≤0.5,0＜y＜1, green glow mixing fluorescent material is selected from (Zn
2-xMn
x) SiO
4And (Ba
1-xMn
x) Al
12O
19The mixture of being formed, the general chemical formula of wherein 0≤x≤0.5, and blue-light fluorescent material is (Ba
1-xEu
x) MgAl
14O
23, 0≤x≤0.5 wherein.
In sum, in flat florescent lamp of the present invention,, therefore make flat florescent lamp have good performance characteristic owing to use above-mentioned phosphor combination thing.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 is the structural representation of the flat florescent lamp of first preferred embodiment of the invention;
Fig. 2 is the structural representation of the flat florescent lamp of first preferred embodiment of the invention, and wherein protective layer is disposed on the fluorescence coating;
Fig. 3 is the excitation spectrum intensity map of the red light fluorescent powder of first preferred embodiment of the invention;
Fig. 4 is the excitation spectrum intensity map of the green light fluorescent powder of first preferred embodiment of the invention;
Fig. 5 is the excitation spectrum intensity map of the blue light fluorescent powder of first preferred embodiment of the invention;
Fig. 6 is the excitation spectrum intensity map of the green light fluorescent powder of second preferred embodiment of the invention;
Fig. 7 is the luminescent spectrum figure of white emitting fluorescent powder of the present invention; And
Fig. 8 is the chromaticity coordinate figure of the white fluorescent powder of white fluorescent powder of the present invention and prior art.
Main description of reference numerals
100 flat florescent lamps
114 upper substrates
112 infrabasal plates
116 supporters
120 electrode groups
130 dielectric layers
140 fluorescence coatings
150 discharge gass
170 protective layers
Embodiment
First embodiment
Fig. 1 illustrates the structural representation of the flat florescent lamp of first embodiment of the invention.The flat florescent lamp 100 of present embodiment comprises infrabasal plate 112, upper substrate 114, a plurality of supporter 116, plurality of electrodes group 120, fluorescence coating 140 and discharge gas 150.Wherein, supporter 116 is positioned at the edge of infrabasal plate 112 and upper substrate 114, and is disposed between infrabasal plate 112 and the upper substrate 114.Electrode group 120 is disposed on the infrabasal plate 112,140 of fluorescence coatings are disposed between each electrode pair 120,150 of discharge gass are positioned at the discharge space that upper substrate 114, infrabasal plate 112 and supporter 116 are surrounded, and supporter 116 is in order to keep the spacing between first substrate 112 and second substrate 114.In addition, the thickness that is disposed at the fluorescence coating 140 between each electrode pair 120 for example is between 5 microns to 300 microns, and discharge gas 150 for example is helium (He), xenon (Xe), deuterium gas (D
2), argon gas (Ar) or other suitable inert gas, when this discharge gas was xenon, the wavelength of its radiation was 172nm.
It should be noted that in the present embodiment, fluorescence coating 140 comprises red light flourescent material, green glow fluorescent material and blue-light fluorescent material at least, the general chemical formula of red light flourescent material is (Y
1-xEu
xP
yV
1-y) O
4, wherein 0≤x≤0.5,0＜y＜1.And the general chemical formula of green glow fluorescent material is (Ba
1-xMn
x) Al
12O
19, 0≤x≤0.5 wherein.The general chemical formula of blue-light fluorescent material is (Ba
1-xEu
x) MgAl
14O
23, 0≤x≤0.5 wherein.Above-mentioned red light flourescent material (a), green glow fluorescent material (b) and blue-light fluorescent material (c) are mixed into the white light fluorescent material, and the weight ratio of its mixing is respectively 0.1＜a＜0.5,0.3＜b＜0.8 and 0.05＜c＜0.5, and wherein a+b+c is 1.Fig. 3 illustrates the excitation spectrum intensity distribution of red light flourescent material through measuring, and X-axis represent wavelength, and Y-axis is represented intensity, and wherein when red light flourescent material was radiating wavelength and is 619nm, its maximum intensity was approximately 0.78a.u..Fig. 4 illustrates the excitation light spectral intensity distribution map of green glow fluorescent material through measuring, and wherein when the green glow fluorescent material was radiating wavelength and is 517nm, its maximum intensity was approximately 0.8a.u..Fig. 5 illustrates the excitation spectrum intensity distribution of blue-light fluorescent material through measuring, and wherein when blue-light fluorescent material was radiating wavelength and is 452nm, its maximum intensity was approximately 0.38a.u..Fig. 7 illustrates the luminescent spectrum figure of the white light fluorescent material of present embodiment, and the weight content of its red light flourescent material, green glow fluorescent material and blue-light fluorescent material is respectively 25%, 50% and 25%.This white light fluorescent material is when excitation wavelength is 172nm, and its luminescent spectrum figure as shown in Figure 7.
Please continue to consult Fig. 1, flat florescent lamp 100 also comprises dielectric layer 130, is covered on the electrode pair 120, so that electrode pair 120 is electrically insulated with discharge gas 150, and keeps out the bombardment of the ion pair electrode pair 120 that is produced when discharge gas 150 forms plasmas.The fluorescence coating 140 that is noted that flat florescent lamp 100 does not in addition limit as Fig. 1 and illustrates, and is formed on the surface of infrabasal plate 112, and fluorescence coating of the present invention also can be formed on the surface of upper substrate 114 simultaneously, illustrates as Fig. 2.And in order to keep out discharge gas 150 effectively when forming plasmas; ion bombardment to fluorescence coating 140; the flat florescent lamp 100 of present embodiment also can comprise protective layer 170, is disposed on the fluorescence coating 140 of upper substrate, and the material of this protective layer 170 comprises magnesium oxide or magnesium fluoride.Because the ion bombardment fluorescence coating 140 that protective layer 170 can avoid discharge gas 150 to be produced when forming plasma, the therefore rate of decay that can slow down fluorescence coating 140 effectively.
Second embodiment
The flat florescent lamp of second embodiment of the invention is similar to first embodiment, and wherein both main difference parts are, the green glow fluorescent material of the flat florescent lamp of present embodiment is (Zn
2-xMn
x) SiO
4, 0≤x≤0.5 wherein.Fig. 6 illustrates the excitation spectrum intensity distribution of this green glow fluorescent material through measuring, and wherein when the green glow fluorescent material was radiating wavelength and is 531nm, its maximum intensity was approximately 0.6a.u..Red light flourescent material (a), green glow fluorescent material (b) and the blue-light fluorescent material (c) of present embodiment are mixed into the white light fluorescent material, and the weight ratio of its mixing is respectively 0.1＜a＜0.5,0.3＜b＜0.8 and 0.05＜c＜0.5, and wherein a+b+c is 1.
The 3rd embodiment
The flat florescent lamp of third embodiment of the invention is similar to the aforementioned embodiment, wherein both main difference parts are, the green glow fluorescent material of the flat florescent lamp of present embodiment comprises the first green glow fluorescent material and the second green glow fluorescent material, and its general chemical formula is respectively (Zn
2-xMn
x) SiO
4And (Ba
1-xMn
x) Al
12O
19, 0≤x≤0.5 wherein.Red light flourescent material, the first green glow fluorescent material, the second green glow fluorescent material and the blue-light fluorescent material of present embodiment are mixed into the white light fluorescent material, the weight ratio of its mixing is respectively 0.1＜a＜0.5,0.3＜b＜0.8,0.3＜b '＜0.8 and 0.05＜c＜0.5, and wherein a+b+b '+c is 1.
In addition, table one illustrates the cie color (x of fluorescent material of the present invention, y) table, Fig. 8 is red light flourescent material (a), green glow fluorescent material (b) and the mixed chromaticity coordinate figure of blue-light fluorescent material (c) of the present invention and prior art, wherein the green glow fluorescent material is BaAl
12O
19: Mn.By experimental data as can be known, the attainable color saturation of white fluorescent powder of the present invention is approximately 90%, and compared to prior art, the color saturation of fluorescent material of the present invention increases about 20%.
Table one. the CIE of fluorescent material of the present invention (x, y) color table
| X | Y | |
| (Y，P)VO 4:Eu | 0.6645 | 0.3332 |
| BaAl 12O 19:Mn | 0.1510 | 0.7509 |
| Zn 2SiO 4:Mn | 0.2419 | 0.6923 |
| BaMgAl 14O 23:Eu | 0.1473 | 0.0710 |
In sum, because flat florescent lamp of the present invention uses above-mentioned phosphor combination thing, therefore flat florescent lamp of the present invention has good performance characteristic.
Though the present invention discloses as above with preferred embodiment; yet it is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when the definition that look appending claims.
Claims (18)
1. flat florescent lamp comprises:
A plurality of substrates, these substrates are opposite each other, and have a plurality of discharge spaces between these substrates;
The plurality of electrodes group, be disposed at these substrates one of them; And
At least one deck fluorescence coating and discharge gas are disposed in this discharge space;
Wherein this fluorescence coating comprises red light flourescent material, green glow fluorescent material and blue-light fluorescent material, and wherein the general chemical formula of this red light flourescent material is (Y
1-xEu
xP
yV
1-y) O
4, the general chemical formula of this green glow fluorescent material is (Ba
1-xMn
x) Al
12O
19Or (Zn
2-xMn
x) SiO
4, the general chemical formula of this blue-light fluorescent material is (Ba
1-xEu
x) MgAl
14O
23, wherein 0≤x≤0.5,0＜y＜1.
2. according to the flat florescent lamp of claim 1, wherein this red light flourescent material (a), this green glow fluorescent material (b) and this blue-light fluorescent material (c) mix and form the white light fluorescent material, wherein this red light flourescent material (a), this green glow fluorescent material (b) and this blue-light fluorescent material (c) weight ratio of mixing and be 1.
3. according to the flat florescent lamp of claim 2, wherein the weight ratio of this red light flourescent material (a), this green glow fluorescent material (b) and this blue-light fluorescent material (c) mixing is respectively 0.1＜a＜0.5,0.3＜b＜0.8 or 0.05＜c＜0.5.
4. according to the flat florescent lamp of claim 1, wherein this discharge gas comprises xenon, argon gas, helium, deuterium gas or suitable inert gas.
5. according to the flat florescent lamp of claim 1, wherein when this discharge gas was xenon, the wavelength of its radiation was 172nm.
6. according to the flat florescent lamp of claim 1, wherein the thickness of this fluorescence coating is between 5 microns to 300 microns.
7. according to the flat florescent lamp of claim 1, wherein this fluorescence coating is formed at these substrates at least on one of them surface, or is formed at simultaneously on the surface of these substrates, and this fluorescence coating is disposed in this discharge space.
8. according to the flat florescent lamp of claim 1, it also comprises dielectric layer, is covered on these electrode groups.
9. according to the flat florescent lamp of claim 1, it also comprises protective layer, is disposed on this fluorescence coating, and wherein the material of this protective layer comprises magnesium oxide or magnesium fluoride.
10. according to the flat florescent lamp source of claim 1, it comprises that also a plurality of supporters connect these substrates, to constitute these discharge spaces between these substrates.
11. a phosphor combination thing comprises red light flourescent material, green glow fluorescent material and blue-light fluorescent material, wherein the general chemical formula of this red light flourescent material is (Y
1-xEu
xP
yV
1-y) O
4, wherein 0≤x≤0.5,0＜y＜1.
12. a phosphor combination thing comprises red light flourescent material, green glow fluorescent material and blue-light fluorescent material, wherein the general chemical formula of this green glow fluorescent material is (Ba
1-xMn
x) Al
12O
19Or (Zn
2-xMn
x) SiO
4, 0≤x≤0.5 wherein.
13. a phosphor combination thing comprises red light flourescent material, green glow fluorescent material and blue-light fluorescent material, wherein the general chemical formula of this blue-light fluorescent material is (Ba
1-xEu
x) MgAl
14O
23, 0≤x≤0.5 wherein.
14. according to claim 11,12 or 13 phosphor combination thing, wherein this red light flourescent material (a), this green glow fluorescent material (b) and this blue-light fluorescent material (c) mix and form the white light fluorescent material, wherein this red light flourescent material (a), this green glow fluorescent material (b) and this blue-light fluorescent material (c) weight ratio of mixing and be 1.
15. according to the phosphor combination thing of claim 14, wherein the weight ratio of this red light flourescent material (a), this green glow fluorescent material (b) and this blue-light fluorescent material (c) mixing is respectively 0.1＜a＜0.5,0.3＜b＜0.8 or 0.05＜c＜0.5.
16. a phosphor combination thing comprises red light flourescent material, green glow mixing fluorescent material and blue-light fluorescent material, wherein the general chemical formula of this red light flourescent material is (Y
1-xEu
xP
yV
1-y) O
4, this green glow mixing fluorescent material is selected from the mixture that the first green glow fluorescent material and the second green glow fluorescent material are formed, and the general chemical formula of this first green glow fluorescent material and this second green glow fluorescent material is respectively (Zn
2-xMn
x) SiO
4And (Ba
1-xMn
x) Al
12O
19, and the general chemical formula of this blue-light fluorescent material is (Ba
1-xEu
x) MgAl
14O
23, wherein 0≤x≤0.5,0＜y＜1.
17. phosphor combination thing according to claim 16, wherein this red light flourescent material (a), this first green glow fluorescent material (b), this second green glow fluorescent material (b ') and this blue-light fluorescent material (c) mix and form the white light fluorescent material, wherein this red light flourescent material (a), this first green glow fluorescent material (b), this second green glow fluorescent material (b ') and this blue-light fluorescent material (c) weight ratio of mixing and be 1.
18. according to the phosphor combination thing of claim 17, wherein this red light flourescent material (a), this first green glow fluorescent material (b), this second green glow fluorescent material (b ') and this blue-light fluorescent material (c) weight ratio of mixing is respectively 0.1＜a＜0.5,0.3＜b＜0.8,0.3＜b '＜0.8 or 0.05＜c＜0.5.
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|---|---|---|---|
| CNA2007101042340A CN101312110A (en) | 2007-05-23 | 2007-05-23 | Planar florescent lamp and its fluorescent powder composition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101042340A CN101312110A (en) | 2007-05-23 | 2007-05-23 | Planar florescent lamp and its fluorescent powder composition |
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| CN101312110A true CN101312110A (en) | 2008-11-26 |
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ID=40100678
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105131943A (en) * | 2015-07-31 | 2015-12-09 | 苏州宏展信息科技有限公司 | Preparation method of fluorescent layer |
-
2007
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105131943A (en) * | 2015-07-31 | 2015-12-09 | 苏州宏展信息科技有限公司 | Preparation method of fluorescent layer |
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Open date: 20081126 |