CN1661764A - Fluorescence planar lamp with cold cathode - Google Patents
Fluorescence planar lamp with cold cathode Download PDFInfo
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- CN1661764A CN1661764A CN 200410005913 CN200410005913A CN1661764A CN 1661764 A CN1661764 A CN 1661764A CN 200410005913 CN200410005913 CN 200410005913 CN 200410005913 A CN200410005913 A CN 200410005913A CN 1661764 A CN1661764 A CN 1661764A
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Abstract
The fluorescence plane lamp includes a cavity, discharge gas, multiple electrodes, fluorescent layer and first light control layer. The cavity possesses a light emergent face. The discharge gas is filled inside the cavity, and the electrodes can be configured inside or outside the cavity. Through salient points on the electrodes divides the cavity into multiple first zones of luminosity and second zones of luminosity. Fluorescent layer is collocated on inner wall of the cavity. Corresponding to the first zones of luminosity, first light control layer is configured on the fluorescent layer in order to reduce light penetration rate on the light emergent face of the cavity. Corresponding to the second zones of luminosity opposite to the first zones of luminosity, second light control layer is configured on the fluorescent layer in order to increase light emergence intensity. Evenness of integral brightness of the lamp is raised through said two layers for controlling light.
Description
Technical field
The invention relates to a kind of cold-cathode fluorescent plant lamp (Cold Cathode Fluorescent FlatLamp, CCFFL), and particularly relevant for a kind of cold-cathode fluorescent plant lamp that uniformly light-emitting intensity is provided.
Background technology
Along with industry is flourishing day by day, digitisation instruments such as mobile phone, digital still camera, numerical digit video camera, notebook computer, desktop computer develop towards direction more convenient, multi-functional and attractive in appearance invariably.Yet the display screen of mobile phone, digital still camera, numerical digit video camera, notebook computer, desktop computer is indispensable man-machine communication interface, and the display screen that sees through the said goods can bring more facility for user's operation.In recent years, display screen on most mobile phone, digital still camera, numerical digit video 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 lightmodule) so that light source to be provided, and then reach the function of demonstration.
Existing common module backlight is made of a fluorescent tube, a reflector (holder) and a light guide plate (LGP).Above-mentioned light guide plate can be converted to the linear light that fluorescent tube sent the kenel of area source, because fluorescent tube is disposed at the side of light guide plate usually, so it is relatively poor by the area source uniformity that light guide plate is throwed, so must be on the light-emitting face of light guide plate configurable number layer blooming piece (as diaphragms such as diffusion sheet, brightening pieces), yet light guide plate and blooming piece cost an arm and a leg, and it causes the cost of module backlight to improve.In addition, because fluorescent tube, reflector and light guide plate all are independent members, must be with a glue frame that above-mentioned fluorescent tube, reflector and light guide plate carrying is fixing in addition.So know as available from the above, this kind module backlight is comparatively loaded down with trivial details in assembling, and assembly cost also can't further reduce.
Consider based on above-mentioned, prior art develops and a kind of cold-cathode fluorescent plant lamp, because cold-cathode fluorescent plant lamp has good illumination efficiency and uniformity, and large-area area source can be provided, so cold-cathode fluorescent plant lamp extensively is applied on the backlight and other applications of display panels.
From the above, cold-cathode fluorescent plant lamp belongs to a kind of electricity slurry light-emitting component, and it is a configured electrodes in a cavity, utilize electronics to penetrate the back by negative electrode and and the negative electrode in the cavity and the inert gas between anode produce collision, and with gas ionization to form the electricity slurry.Afterwards, the gas atom that is in excite state in the electricity slurry can radiate ultraviolet ray when getting back to ground state, and the ultraviolet ray of being radiated then can further excite the fluorescent material of coating cavity inner wall, to produce visible light.
Because in above-mentioned discharge process, light source is concentrated easily and is formed line source, therefore is difficult to reach in large-area cold-cathode fluorescent plant lamp the effect of complanation.And general solution is to adopt controllable partial discharge mode, for example is a plurality of prominent points of design on electrode, so that electrode produces point discharge at this prominent a bit some place, and then makes large-area cold-cathode fluorescent plant lamp as being made up of many facet lamps.
Yet, the mode of above-mentioned partial discharge can make cold-cathode fluorescent plant lamp stronger at the light intensity of point discharge place, other regional light are then darker relatively, thereby the bright dark staggered lines of systematicness occurs, and then influence the integral brightness uniformity of cold-cathode fluorescent plant lamp.
Summary of the invention
Purpose of the present invention just provides a kind of cold-cathode fluorescent plant lamp, can increase the light intensity that is sent by the zone that does not produce point discharge, so that cold-cathode fluorescent plant lamp has briliancy uniformly.
Another object of the present invention provides a kind of cold-cathode fluorescent plant lamp, can reduce the light intensity that is sent by the zone of point discharge, so that cold-cathode fluorescent plant lamp has briliancy uniformly.
For reaching above-mentioned purpose, the present invention proposes a kind of cold-cathode fluorescent plant lamp, mainly is to be made of a cavity, discharge gas, a plurality of electrode, fluorescence coating and first light control layer.Wherein, cavity is to have a light-emitting face.Discharge gas is disposed in the cavity, and electrode is configurable in cavity or outside the cavity, and fluorescence coating is to be disposed on the inwall of cavity.First light control layer then is to be configured on the fluorescence coating, and corresponding to the light-emitting face of cavity.
Described according to embodiments of the invention, cavity is made of first substrate, second substrate and edge strip.Wherein, second substrate is the top that is positioned at first substrate, and edge strip then is between first and second substrate, and is connected to its edge.
Described according to embodiments of the invention, discharge gas for example is an inert gas, and preferably xenon, argon gas or neon one of them.
Described according to embodiments of the invention, the electrode in the cavity for example is to comprise a plurality of salient points.And in another embodiment, these a little electrodes for example are that cavity is divided at least one sub-cavity, and this a little cavity is to distinguish a plurality of first luminous zones and second luminous zone by the salient point on a little electrodes thus.And these a little second luminous zones for example are between these a little first luminous zones.And, first light control layer preferably be disposed at corresponding to these a little first luminous zones fluorescence coating on.
Described according to embodiments of the invention, the material of first light control layer for example is the fluorescence material.And in another embodiment, the material of first light control layer for example is identical with the material of fluorescence coating.
Described according to embodiments of the invention, first light control layer for example is single pattern rete or multi-layered patterned membrane stack.
Described according to embodiments of the invention, this cold-cathode fluorescent plant lamp more comprises one second light control layer, and it is to be disposed on the fluorescence coating, and with respect to first light control layer.And preferably, second light control layer is to be configured on the fluorescence coating corresponding to these a little second luminous zones.
Described according to embodiments of the invention, the material of second light control layer for example is the fluorescence material.And in another embodiment, the material of second light control layer for example is identical with the material of fluorescence coating.
Described according to embodiments of the invention, second light control layer for example is single pattern rete or multi-layered patterned membrane stack.
The present invention proposes a kind of cold-cathode fluorescent plant lamp, mainly is to be made of a cavity, discharge gas, a plurality of electrode, fluorescence coating and second light control layer.Wherein, cavity be have a light-emitting face and with the light-emitting face opposed bottom surface.Discharge gas is disposed in the cavity, and electrode is configurable in cavity or outside the cavity, and fluorescence coating is to be disposed on the inwall of cavity.Second light control layer then is to be configured on the fluorescence coating, and corresponding to the bottom surface of cavity.
Described according to embodiments of the invention, cavity is made of first substrate, second substrate and edge strip.Wherein, second substrate is the top that is positioned at first substrate, and edge strip then is between first and second substrate, and is connected to its edge.
Described according to embodiments of the invention, discharge gas for example is an inert gas, and preferably xenon, argon gas or neon one of them.
Described according to embodiments of the invention, the electrode in the cavity for example is to comprise a plurality of salient points.And in another embodiment, these a little electrodes for example are that cavity is divided at least one sub-cavity, and this a little cavity is to distinguish a plurality of first luminous zones and second luminous zone by the salient point on a little electrodes thus.And these a little second luminous zones for example are between these a little first luminous zones.And second light control layer preferably is disposed on the fluorescence coating corresponding to these a little second luminous zones.
Described according to embodiments of the invention, the material of second light control layer for example is the fluorescence material.And in another embodiment, the material of second light control layer for example is identical with the material of fluorescence coating.
Described according to embodiments of the invention, second light control layer for example is single pattern rete or multi-layered patterned membrane stack.
The present invention disposes light control layer on the fluorescence coating on the cavity inner wall of cold-cathode fluorescent plant lamp, so that the light intensity of control outgoing, and then the briliancy uniformity of raising integral planar lamp.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, a preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below.
Description of drawings
Fig. 1 is the birds-eye perspective that illustrates a kind of cold-cathode fluorescent plant lamp of a preferred embodiment of the present invention;
Fig. 2 illustrates the generalized section into the I-I ' part of Fig. 1;
Fig. 2 A illustrates the generalized section into the I-I ' part of another embodiment of the present invention in Fig. 1;
Fig. 3 illustrates the generalized section of I-I ' part in another embodiment of the present invention into Fig. 1;
Fig. 3 A illustrates the generalized section in the I-I ' of Fig. 1 part into an embodiment more of the present invention;
Fig. 4 illustrates the generalized section of I-I ' part in another embodiment of the present invention into Fig. 1.
Embodiment
The present invention is at the middle design different pattern of cold-cathode fluorescent plant lamp and the fluorescent material of thickness, to promote the luminous uniformity of cold-cathode fluorescent plant lamp.Below will describe the configuration mode of fluorescent material in the cold-cathode fluorescent plant lamp of the present invention for embodiment in detail, yet these embodiment only being illustrational usefulness, is not in order to limit the present invention.
Fig. 1 is the birds-eye perspective that illustrates a kind of cold-cathode fluorescent plant lamp of a preferred embodiment of the present invention.And Fig. 2 illustrates the generalized section into the I-I ' part of Fig. 1.Please be simultaneously with reference to Fig. 1 and Fig. 2, cold-cathode fluorescent plant lamp 100 mainly is to comprise cavity 102, discharge gas 104, electrode 106, fluorescence coating 108 and first light control layer 110.Wherein, the cavity 102 of present embodiment for example is roughly to become a cube, and it for example is made up of first substrate 112, second substrate 114 and edge strip 116, and has light-emitting face 118.Fluorescence coating 108 is to be disposed on the inwall of cavity 102, and in the present embodiment, fluorescence coating 108 for example is to be configured on first substrate 112 and second substrate 114.Discharge gas 104 then is disposed in the cavity 102, and it for example is xenon (Xe), neon (Ne) or argon gas inert gases such as (Ar).
Referring again to Fig. 1, dispose multi-group electrode 106 in the cavity 102, these a little electrodes 106 can be divided into cavity 102 a plurality of sub-cavitys 128.And the lighting in the process of cold-cathode plane lamp 100, mainly be by driving by electrode 106, make electrode 106 produce collision with the atom of discharge gas 104 at cavity 102 internal emission electronics, and with discharge gas 104 ionizations and excite and form the electricity slurry.After, the atom that is in excite state in the electricity slurry can radiate ultraviolet ray when getting back to ground state, and the ultraviolet ray of being radiated can further excite the fluorescence coating 108 on the inwall of cavity 102, to produce visible light.
What deserves to be mentioned is that electrode 106 for example is to have a plurality of salient points 120 and single sub-cavity 128 is divided into first luminous zone 122 and second luminous zone 124 in the present embodiment.And because the electric current of 120 of corresponding salient points is stronger, the therefore ultraviolet intensity that can be radiated greater than second luminous zone 124 of the ultraviolet intensity that radiates in first luminous zone 122.And the light intensity of 100 outgoing of cold-cathode fluorescent plant lamp is relevant with ultraviolet intensity.Except that this, it is also relevant with the amount of the fluorescent material that shone by ultraviolet ray in the unit interval.
Referring again to Fig. 2, based on above-mentioned, the present invention is configured in first light control layer 110 corresponding on the fluorescence coating 108 of the light-emitting face 118 and first luminous zone 122 (as shown in Figure 1), to reduce light penetration rate herein, and then weaken light intensity by 122 outgoing in first luminous zone, so that it is comparable to the light intensity of institute's outgoing in second luminous zone 124, and then reach the effect of uniformly light-emitting.Wherein, first light control layer 110 for example is the patterning rete of palisade, point-like or other suitable shapes and distribution density.And the material of first light control layer 110 is made of fluorescent material, and its preferably with fluorescence coating 108 same materials.In addition, the formation method of first light control layer 110 for example is the screen painting method.
Yet the number of plies of above-mentioned composition first light control layer 110 only is the practice of a preferred embodiment, and the present invention does not limit the number of plies of first light control layer.In another embodiment of the present invention, first light control layer can also be the patterning rete of multiple-level stack, and first light control layer 210 that is illustrated as Fig. 2 A promptly is to be piled up by patterning rete 210a and patterning rete 210b to form.And among Fig. 2 A except first light control layer 210, the label components identical among other labels and Fig. 2, all identical with the explanation of Fig. 2, will repeat no more herein.
It should be noted that, except the uniformity of light intensity with the raising integral brightness that weakens institute's outgoing in first luminous zone 122 with above-mentioned method, the present invention can also be by being improved the uniformity of integral brightness by the light intensity that increases institute's outgoing in second luminous zone 124.Below will lift a preferred embodiment and do more detailed explanation.
Fig. 3 illustrates the generalized section of I-I ' part in another embodiment of the present invention into Fig. 1, and the element numbers among the figure illustrates identical person with Fig. 2, the method of its material, purposes, characteristic and formation all with Fig. 2 in pairing element same or similar, will repeat no more herein.
Please refer to Fig. 3, second light control layer 126 is on the fluorescence coating 108 that is configured in respect to light-emitting face 118 on second substrate 114, and corresponding to second luminous zone 124 that Fig. 1 illustrated.And the material of second light control layer 126 is made of fluorescent material, so that increase the quantity of the ultraviolet fluorescent material that in the unit interval, is shone, and then improve the light intensity of 124 outgoing in second luminous zone.And, the material of second light control layer 126 preferably with fluorescence coating 108 same materials.In addition, the formation method of second light control layer 126 for example is the screen painting method.
Specifically, in the present embodiment, second light control layer 126 is made up of patterning rete 126a and patterning rete 126b.Wherein, patterning rete 126a for example is the fluorescence coating 108 that covers corresponding to second luminous zone 124.And patterning rete 126b is disposed at the point-like on the patterning rete 126a or the rete of palisade.The collocation of patterning rete 126a and patterning rete 126b can increase the area of the ultraviolet fluorescent material that is shone effectively in the unit interval, meaning has promptly increased in second luminous zone 124 by the amount of the fluorescent material of ultraviolet irradiation, and then raising is by the light intensity of 124 outgoing in second luminous zone, so that it is comparable to the light intensity of 122 outgoing in first luminous zone.
Certainly, the present invention is not also limited the number of plies of second light control layer.In another embodiment of the present invention, second light control layer can also be single patterning rete, or piles up the patterning rete that forms more than two-layer.Please refer to Fig. 3 A, second light control layer 226 that it illustrated is made of single patterning rete.And among Fig. 3 A except first light control layer 226, the label components identical among other labels and Fig. 3, all identical with the explanation of Fig. 3, will repeat no more herein.
In addition, the present invention is more in another embodiment in conjunction with two above-mentioned embodiment, just in cold-cathode fluorescent plant lamp, dispose first light control layer and second light control layer simultaneously, as described in the following Examples, so that further improve the integral brightness uniformity of cold-cathode fluorescent plant lamp.
Fig. 4 illustrates the generalized section of I-I ' part in another embodiment of the present invention into Fig. 1.Please refer to Fig. 4, present embodiment is to combine above-mentioned Fig. 2 and the illustrated embodiment of Fig. 3.That is to say, present embodiment is to dispose first light control layer 110 in cold-cathode fluorescent plant lamp on corresponding to the fluorescence coating 108 of the light-emitting face 118 and first luminous zone 122 (as shown in Figure 1), and on the fluorescence coating 108 on second substrate 114 configuration with respect to second light control layer 126 of first light control layer 110, and corresponding to second luminous zone 124 that Fig. 1 illustrated.Therefore, in the present embodiment not only can be by reduce the light penetration rate in first luminous zone 122 by first light control layer 110, and then weaken light intensity by 122 outgoing in first luminous zone, more can be by increasing the quantity of the fluorescent material that in second luminous zone 124, shone in the unit interval of ultraviolet ray by second light control layer 126, and then improve the light intensity of 124 outgoing in second luminous zone.
By the above as can be known, the present invention is the light control layer that disposes one or more layers on the fluorescence coating on the cavity inner wall of cold-cathode fluorescent plant lamp, so that in the less zone of gas atom discharge capacity, increase light outgoing intensity, and the penetrance that reduces light in the more zone of gas atom discharge capacity to be weakening light outgoing intensity, and then improves the briliancy uniformity of whole cold-cathode fluorescent plant lamp.And because the present invention can solve the problem that the existing plane lamp that utilizes partial discharge has bright dark lines, the large-area cold-cathode fluorescent plant lamp of the luminous intensity of therefore utilizing technology of the present invention to produce to have high evenness.
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 (25)
1. a cold-cathode fluorescent plant lamp is characterized in that, comprising:
One cavity has a light-emitting face;
One discharge gas is disposed in this cavity;
Most electrodes are disposed in this cavity or outside the cavity;
One fluorescence coating is disposed on one of this cavity inwall; And
One first light control layer is disposed on this fluorescence coating, and this first light control layer is corresponding to this light-emitting face.
2. cold-cathode fluorescent plant lamp as claimed in claim 1 is characterized in that, described this cavity comprises:
One first substrate;
One second substrate is positioned at this first substrate top; And
One edge strip, between this first substrate and this second substrate, and this edge strip is to be connected with the edge of this first substrate and this second substrate.
3. cold-cathode fluorescent plant lamp as claimed in claim 1 is characterized in that, described this discharge gas comprises an inert gas.
4. cold-cathode fluorescent plant lamp as claimed in claim 3 is characterized in that, described this inert gas comprise xenon, neon and argon gas one of them.
5. cold-cathode fluorescent plant lamp as claimed in claim 1 is characterized in that, comprises most salient points on described each those electrode.
6. cold-cathode fluorescent plant lamp as claimed in claim 5, it is characterized in that, described those electrodes are that this cavity is divided at least one sub-cavity, and this a little cavity is by divided into most first luminous zones and most positions second luminous zone between those first luminous zones by those projections on those electrodes.
7. cold-cathode fluorescent plant lamp as claimed in claim 6 is characterized in that, described this first light control layer is to be disposed on this fluorescence coating corresponding to those first luminous zones.
8. cold-cathode fluorescent plant lamp as claimed in claim 1 is characterized in that the material of described this first light control layer comprises the fluorescence material.
9. cold-cathode fluorescent plant lamp as claimed in claim 1 is characterized in that, the material of described this first light control layer is identical with the material of this fluorescence coating.
10. cold-cathode fluorescent plant lamp as claimed in claim 1 is characterized in that, described this first light control layer comprise single pattern rete and multi-layered patterned membrane stack one of them.
11. cold-cathode fluorescent plant lamp as claimed in claim 1 is characterized in that, more comprises one second light control layer, be disposed on this fluorescence coating, and this second light control layer is with respect to this first light control layer.
12. cold-cathode fluorescent plant lamp as claimed in claim 11 is characterized in that, described this second light control layer is to be disposed on this fluorescence coating corresponding to those second luminous zones.
13. cold-cathode fluorescent plant lamp as claimed in claim 11 is characterized in that, the material of described this second light control layer comprises the fluorescence material.
14. cold-cathode fluorescent plant lamp as claimed in claim 11 is characterized in that, the material of described this second light control layer is identical with the material of this fluorescence coating.
15. cold-cathode fluorescent plant lamp as claimed in claim 11 is characterized in that, described this second light control layer comprise single pattern rete and multi-layered patterned membrane stack one of them.
16. a cold-cathode fluorescent plant lamp is characterized in that, comprising:
One cavity has a light-emitting face and a bottom surface, and wherein this light-emitting face is relative with this bottom surface;
One discharge gas is disposed in this cavity;
Most electrodes are disposed in this cavity or outside the cavity;
One fluorescence coating is disposed on one of this cavity inwall; And
One second light control layer is disposed on this fluorescence coating, and this second light control layer is corresponding to this bottom surface.
17. cold-cathode fluorescent plant lamp as claimed in claim 16 is characterized in that, described this cavity comprises:
One first substrate;
One second substrate is positioned at this first substrate top; And
One edge strip, between this first substrate and this second substrate, and this edge strip is to be connected with the edge of this first substrate and this second substrate.
18. cold-cathode fluorescent plant lamp as claimed in claim 16 is characterized in that, described this discharge gas comprises an inert gas.
19. cold-cathode fluorescent plant lamp as claimed in claim 16 is characterized in that, described this inert gas comprise xenon, neon and argon gas one of them.
20. cold-cathode fluorescent plant lamp as claimed in claim 16 is characterized in that, comprises most salient points on described each those electrode.
21. cold-cathode fluorescent plant lamp as claimed in claim 20, it is characterized in that, described those electrodes are that this cavity is divided at least one sub-cavity, and this a little cavity is by divided into most first luminous zones and most positions second luminous zone between those first luminous zones by those projections on those electrodes.
22. cold-cathode fluorescent plant lamp as claimed in claim 21 is characterized in that, described this second light control layer is to be disposed on this fluorescence coating corresponding to those second luminous zones.
23. cold-cathode fluorescent plant lamp as claimed in claim 16 is characterized in that, the material of described this second light control layer comprises the fluorescence material.
24. cold-cathode fluorescent plant lamp as claimed in claim 16 is characterized in that, the material of described this second light control layer is identical with the material of this fluorescence coating.
25. cold-cathode fluorescent plant lamp as claimed in claim 16 is characterized in that, described this second light control layer comprise single pattern rete and multi-layered patterned membrane stack one of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410005913 CN1661764A (en) | 2004-02-24 | 2004-02-24 | Fluorescence planar lamp with cold cathode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410005913 CN1661764A (en) | 2004-02-24 | 2004-02-24 | Fluorescence planar lamp with cold cathode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1661764A true CN1661764A (en) | 2005-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410005913 Pending CN1661764A (en) | 2004-02-24 | 2004-02-24 | Fluorescence planar lamp with cold cathode |
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| CN (1) | CN1661764A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101123267B (en) * | 2006-08-09 | 2010-11-03 | 统宝光电股份有限公司 | System for displaying images and method for fabricating the same |
| CN105842917A (en) * | 2016-04-20 | 2016-08-10 | 乐视控股（北京）有限公司 | Composite light guide plate, manufacturing method thereof, backlight module, display equipment and light box |
-
2004
- 2004-02-24 CN CN 200410005913 patent/CN1661764A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101123267B (en) * | 2006-08-09 | 2010-11-03 | 统宝光电股份有限公司 | System for displaying images and method for fabricating the same |
| US7863807B2 (en) | 2006-08-09 | 2011-01-04 | Tpo Displays Corp. | System for displaying images and method for fabricating the same |
| US8188648B2 (en) | 2006-08-09 | 2012-05-29 | Chimei Innolux Corporation | System for displaying images and method for fabricating the same |
| CN105842917A (en) * | 2016-04-20 | 2016-08-10 | 乐视控股（北京）有限公司 | Composite light guide plate, manufacturing method thereof, backlight module, display equipment and light box |
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