CN101101852A - Cold cathode fluorescent planar lamp - Google Patents
Cold cathode fluorescent planar lamp Download PDFInfo
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- CN101101852A CN101101852A CNA2006100903969A CN200610090396A CN101101852A CN 101101852 A CN101101852 A CN 101101852A CN A2006100903969 A CNA2006100903969 A CN A2006100903969A CN 200610090396 A CN200610090396 A CN 200610090396A CN 101101852 A CN101101852 A CN 101101852A
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Abstract
The invention is concerned with the cold cathode blue-fluorescence plane light, it includes the first and the second plaque, several of the backstops, several of the first electrodes, the blue-fluorescence layer, and the discharge gas. The first and the second plaque are with their first and the second surfaces opposite to each other, where the first electrode sets on the first surface and the blue-fluorescence layer sets on the second surface. The backstops are in the middle of the first and the second plaque and form the chamber with the discharge gas filling in. The design of the invention keeps the electrode and the blue-fluorescence layer away from the electricity slurry of the discharge gas to reduce the ion bombardment of the electricity slurry to the blue-fluorescence layer.
Description
Technical field
The invention relates to a kind of cold-cathode fluorescent plant lamp, and particularly relevant for a kind of cold-cathode fluorescent plant lamp (COLD CATHODE FLUORESCENT FLATLAMP) that can slow down the blue light rate of decay.
Background technology
Along with industry is flourishing day by day, digitization tools such as mobile phone, digital camera, notebook computer, desktop computer 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, notebook computer and the desktop computer 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 a module backlight (back light module) so that light source to be provided, and then reach the function of demonstration.
Existing module backlight comprise light-emittingdiode module backlight, cathode fluorescent tube module backlight, cold-cathode fluorescent plant lamp (cold cathode fluorescent flat lamp, CCFFL) etc.Fig. 1 illustrates the structural representation of existing a kind of cold-cathode fluorescent plant lamp.Please refer to Fig. 1, existing cold-cathode fluorescent plant lamp 100 comprises that an infrabasal plate 112, a upper substrate 114 and a plurality of supporter 116, multi-group electrode are to 120, one dielectric layer 130, a fluorescent material layer 140 and a 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 pair 120 is disposed on the infrabasal plate 112, and dielectric layer 130 coated electrodes are to 120.140 of fluorescent material layers are to be disposed between each electrode pair 120, and comprise the fluorescent material of ruddiness, green glow, blue light in the fluorescent material layer 140.150 of discharge gass are positioned at the space that upper substrate 114, infrabasal plate 112 and supporter 116 are surrounded.
The type of drive of cold-cathode fluorescent plant lamp 100 is to apply driving voltage earlier to give electrode pair 120, makes discharge gas 150 be dissociated to become the electricity slurry.Afterwards, the electronics that is in excite state in each ion and the metastable molecule in the electricity slurry (as Xe2* etc.) can send ultraviolet ray when getting back to ground state, and the ultraviolet irradiation of being sent when electricity slurry is during to fluorescent material layer 140, will make the fluorescent material of ruddiness in the fluorescent material layer 140, green glow, blue light send ruddiness, green glow, blue light.After three kinds of light colour mixtures, just form white light.
Yet in discharge gas 150 free processes for the electricity slurry, fluorescent material layer 140 can be subjected to ion bombardment, especially in order to send the blue light material of blue light, itself and red light material and green light material easily because of suffering ion bombardment, and decay its blue light strength of sending in comparison fast.Hence one can see that, the existing cold-cathode fluorescent plant lamp 100 that originally can send white light in use for some time, meeting is because of the damage of blue light material, and past red, the green skew of the light color coordinate that makes cold-cathode fluorescent plant lamp 100 be sent, so can't stably send white light.
Summary of the invention
Because above-mentioned, the objective of the invention is is providing a kind of cold-cathode fluorescent plant lamp that can slow down the blue light rate of decay.
Based on above-mentioned purpose and other purposes, the present invention proposes a kind of cold-cathode fluorescent plant lamp, comprises one first substrate, one second substrate, a plurality of supporter, many first electrodes, a blue light fluorescence coating and discharge gass.Wherein, first substrate has a first surface, and second substrate then has a second surface, and first surface is with respect to second surface.Supporter is to be connected between first substrate and second substrate, and forms a chamber between first substrate, second substrate and those supporters.These first electrodes are disposed on the first surface of first substrate, and the blue light fluorescence coating is disposed on the second surface of second substrate, discharge gas then filling in this chamber.
According to the described cold-cathode fluorescent plant lamp of preferred embodiment of the present invention, more comprise a dielectric layer, be disposed on the first surface of first substrate and cover these first electrodes.And in a preferred embodiment, above-mentioned cold-cathode fluorescent plant lamp more comprises a mixed light fluorescence coating, be disposed at each between first electrode, and this mixed light fluorescence coating is suitable for inspiring the mixed light of ruddiness and green glow.Wherein, the thickness of this mixed light fluorescence coating for example is between 10 microns to 200 microns.
According to the described cold-cathode fluorescent plant lamp of preferred embodiment of the present invention, more comprise a protective layer, be disposed on the blue light fluorescence coating.In a preferred embodiment, the material of this protective layer for example is magnesium oxide or magnesium fluoride.
According to the described cold-cathode fluorescent plant lamp of preferred embodiment of the present invention, wherein discharge gas for example is xenon, argon gas, helium or deuterium gas.
According to the described cold-cathode fluorescent plant lamp of preferred embodiment of the present invention, wherein the spacing between first substrate and second substrate is for example between 0.5 millimeter to 8 millimeters.
According to the described cold-cathode fluorescent plant lamp of preferred embodiment of the present invention, wherein the thickness of blue light fluorescence coating is for example between 2 microns to 15 microns.
In sum, in cold-cathode fluorescent plant lamp of the present invention, the blue light fluorescence coating is to be disposed on second substrate, and first electrode pair is to be disposed on first substrate, and therefore the ion that is produced in the electricity slurry forming process is difficult for bombarding the blue light fluorescence coating.Thus, can slow down the rate of decay of the blue light strength that the blue light fluorescence coating sends.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below.
Description of drawings
Fig. 1 illustrates a kind of structural representation of cold-cathode fluorescent plant lamp.
Fig. 2 to Fig. 4 illustrates the structural representation of the cold-cathode fluorescent plant lamp of different embodiments of the invention respectively.
Fig. 5 illustrates the structural representation of a module backlight of the cold-cathode fluorescent plant lamp making that utilizes Fig. 2.
100,200,300: cold-cathode fluorescent plant lamp
112: infrabasal plate
114: upper substrate
212: the first substrates
214: the second substrates
116,216: supporter
120: electrode pair
130,260,310: dielectric layer
140: fluorescent material layer
150,240: discharge gas
210: chamber
210a: first surface
210b: second surface
220: the first electrodes
230: the blue light fluorescence coating
250: the mixed light fluorescence coating
270: protective layer
280: diffuser plate
290: the second electrodes
500: module backlight
Embodiment
Fig. 2 illustrates the structural representation of the cold-cathode fluorescent plant lamp of preferred embodiment of the present invention.Please refer to Fig. 2, the cold-cathode fluorescent plant lamp 200 of present embodiment mainly comprises first substrate 212, second substrate 214, a plurality of supporter 216, many first electrodes 220, a blue light fluorescence coating 230 and discharge gass 240.First substrate 212 has a first surface 210a, second substrate 214 is to be positioned at first substrate, 212 tops, and second substrate 214 has a second surface 210b, wherein second surface 210b is relative with first surface 210a, and first electrode 220 is disposed on the first surface 210a, and blue light fluorescence coating 230 is disposed on the second surface 210b.Supporter 216 is to be connected between first substrate 212 and second substrate 214, and formation one chamber surrounds a chamber 210 between first substrate 212, second substrate 214 and supporter 216, and discharge gas 240 promptly is that filling is in chamber 210.What deserves to be mentioned is that cold-cathode fluorescent plant lamp 200 also can comprise a plurality of supporters 216, in order to keep the spacing between first substrate 212 and second substrate 214.
Please continue with reference to Fig. 2, the distance between the second surface 210b of the first surface 210a of first substrate 212 and second substrate 214 is for example between 0.5 millimeter to 8 millimeters.Specifically, in one embodiment, second substrate of the present invention also can be the substrate of non-flat forms, and as shown in Figure 3, second substrate 320 for example is to be concavo-convex fluctuating shape.
In addition, the thickness that is disposed at the blue light fluorescence coating 230 on the second surface 210b is for example between 2 microns to 15 microns, and discharge gas 240 for example is helium (He), xenon (Xe), deuterium gas (D2), argon gas (Ar) or other suitable inert gases.
In addition, cold-cathode fluorescent plant lamp 200 more comprises a dielectric layer 260, is covered on first electrode 220, so that first electrode 220 is electrically insulated with discharge gas 240, and keeps out the bombardment of ion pair first electrode 220 that is produced when discharge gas 240 forms the electricity slurry.In another embodiment, as shown in Figure 4, cold-cathode fluorescent plant lamp 300 more can comprise a plurality of second electrodes 290, be disposed on the second surface 210b of second substrate 214, and each second electrode 290 corresponds respectively to each to first electrode 220.Also be coated with dielectric layer 310 on second electrode 290, blue fluorescent body 230 then is to cover the dielectric layer 310 and second electrode 290.
What deserves to be mentioned is that can send mixed light for making cold-cathode fluorescent plant lamp 200, cold-cathode fluorescent plant lamp 200 more comprises the fluorescence coating that can inspire other coloured light.In the present embodiment, cold-cathode fluorescent plant lamp 200 for example is to comprise a mixed light fluorescence coating 250, be disposed on the first surface 210a of first substrate 212, and between each is to first electrode 220.And this mixed light fluorescence coating 250 is suitable for inspiring the mixed light of ruddiness and green glow, and its thickness is for example between 10 microns to 200 microns.
Cold-cathode fluorescent plant lamp 200 is to apply driving voltage to the first electrode 220 earlier as flowing mode, so that discharge gas 240 is dissociated to become the electricity slurry.The electricity slurry inspires ultraviolet ray thus again, and when ultraviolet ray can shine blue light fluorescence coating 230 and mixed light fluorescence coating 250, will make blue light fluorescence coating 230 send blue light, and make mixed light fluorescence coating 250 send the mixed light of green glow and ruddiness, these light can form white light behind mixed light.
In above-mentioned start process,,, can compare near first substrate 212 from discharge gas 240 ion that dissociates therefore in the process that forms the electricity slurry because electrode pair 220 is to be disposed on first substrate 212.At this moment, blue light fluorescence coating 230 is to be disposed on second substrate 214, and is far away apart from these ions.Based on above-mentioned, compared to mixed light fluorescence coating 250, the suffered ion bombardment meeting of blue light fluorescence coating 230 is smaller, thereby slows down the rate of decay of the blue light strength that blue light fluorescence coating 230 sent.Thus, cold-cathode fluorescent plant lamp 200 still can more stably send equal white light through after the long-term use, and can not produce the problem of light color coordinate skew.
In addition; in order more effectively to keep out discharge gas 240 ion bombardment to blue light fluorescence coating 230 when forming the electricity slurry; the cold-cathode fluorescent plant lamp 200 of present embodiment more can comprise a protective layer 270; it is disposed on the blue light fluorescence coating 230, and the material of this protective layer 270 comprises magnesium oxide or magnesium fluoride.Because the ion bombardment blue light fluorescence coating 230 that protective layer 270 can avoid discharge gas 240 to be produced, therefore can slow down the rate of decay of the blue light that blue light fluorescence coating 230 inspired effectively when forming the electricity slurry.
Fig. 5 illustrates the structural representation of another module backlight of the cold-cathode fluorescent plant lamp making that utilizes Fig. 2.Please refer to Fig. 5, what deserves to be mentioned is, the cold-cathode fluorescent plant lamp 200 of present embodiment can add a diffuser plate 280 and form a module 500 backlight.Wherein, diffuser plate 280 is to be fixed on the cold-cathode fluorescent plant lamp 200 by a fixed mount (not illustrating), and its purposes is that the light luminance that module 500 backlight is sent is more even.And, with the foregoing description, must have a light mixing distance in the module 500 backlight, so that the blue light that red, green mixed light that mixed light fluorescence coating 250 is inspired and blue light fluorescence coating 230 are inspired evenly blendes together white light, and this light mixing distance promptly is the distance of 200 of diffuser plate 280 and cold-cathode fluorescent plant lamps, and it is decided by the required light mixing distance of reality.In the present embodiment, the distance of 200 of diffuser plate 280 and cold-cathode fluorescent plant lamps is for example between 1 millimeter to 5 millimeters.
In sum, in cold-cathode fluorescent plant lamp of the present invention, electrode pair is disposed on first substrate, and the blue light fluorescence coating is disposed on second substrate, so can reduce the suffered ion bombardment of blue light fluorescence coating, slowing down the rate of decay of the blue light that the blue light fluorescence coating inspired, and then make the blue light fluorescence coating stably send blue light, and therefore prolong the useful life of cold-cathode fluorescent plant lamp.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; anyly have the knack of this skill person; 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 looking accompanying the claim person of defining.
Claims (11)
1. cold-cathode fluorescent plant lamp is characterized in that it comprises:
One first substrate has a first surface;
One second substrate is positioned at this first substrate top, and this second substrate has a second surface, and wherein this second surface is with respect to this first surface;
A most supporter are connected between this first substrate and this second substrate, and form a chamber between this first substrate, this second substrate and those supporters.
Many first electrodes are disposed on this first surface of this first substrate;
One blue light fluorescence coating is disposed on this second surface of this second substrate; And
One discharge gas, filling is in this chamber.
2. cold-cathode fluorescent plant lamp according to claim 1 is characterized in that it more comprises one first dielectric layer, is covered on those first electrodes.
3. cold-cathode fluorescent plant lamp according to claim 2 is characterized in that it more comprises a mixed light fluorescence coating, be disposed at each between first electrode, and this mixed light fluorescence coating is suitable for inspiring the mixed light of ruddiness and green glow.
4. cold-cathode fluorescent plant lamp according to claim 2, the thickness that it is characterized in that this mixed light fluorescence coating wherein is between 10 microns to 200 microns.
5. cold-cathode fluorescent plant lamp according to claim 1 source is characterized in that it more comprises a protective layer, is disposed on this blue light fluorescence coating.
6. cold-cathode fluorescent plant lamp according to claim 5 source is characterized in that wherein the material of this protective layer comprises magnesium oxide or magnesium fluoride.
7. cold-cathode fluorescent plant lamp according to claim 1 is characterized in that wherein this discharge gas comprises xenon, argon gas, helium or deuterium gas.
8. cold-cathode fluorescent plant lamp according to claim 1 is characterized in that wherein the spacing between this first substrate and this second substrate is between 0.5 millimeter to 8 millimeters.
9. cold-cathode fluorescent plant lamp according to claim 1, the thickness that it is characterized in that this blue light fluorescence coating wherein is between 2 microns to 15 microns.
10. cold-cathode fluorescent plant lamp according to claim 1 is characterized in that it more comprises many second electrodes, be disposed on this second surface of this second substrate, and respectively this second electrode is corresponding between a pair of first electrode.
11. cold-cathode fluorescent plant lamp according to claim 10 is characterized in that it more comprises one second dielectric layer, is covered on those second electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100903969A CN101101852A (en) | 2006-07-05 | 2006-07-05 | Cold cathode fluorescent planar lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100903969A CN101101852A (en) | 2006-07-05 | 2006-07-05 | Cold cathode fluorescent planar lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101101852A true CN101101852A (en) | 2008-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100903969A Pending CN101101852A (en) | 2006-07-05 | 2006-07-05 | Cold cathode fluorescent planar lamp |
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| Country | Link |
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| CN (1) | CN101101852A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049360A (en) * | 2014-06-10 | 2014-09-17 | 京东方科技集团股份有限公司 | Electric wetting displaying device |
| CN105278160A (en) * | 2015-10-29 | 2016-01-27 | 深圳市华星光电技术有限公司 | Backlight unit, backlight module and display device |
-
2006
- 2006-07-05 CN CNA2006100903969A patent/CN101101852A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049360A (en) * | 2014-06-10 | 2014-09-17 | 京东方科技集团股份有限公司 | Electric wetting displaying device |
| CN105278160A (en) * | 2015-10-29 | 2016-01-27 | 深圳市华星光电技术有限公司 | Backlight unit, backlight module and display device |
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