CN101093783A - Plane light source - Google Patents
Plane light source Download PDFInfo
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- CN101093783A CN101093783A CN 200610095649 CN200610095649A CN101093783A CN 101093783 A CN101093783 A CN 101093783A CN 200610095649 CN200610095649 CN 200610095649 CN 200610095649 A CN200610095649 A CN 200610095649A CN 101093783 A CN101093783 A CN 101093783A
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- lamp source
- substrate
- planar lamp
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- marginal zone
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Abstract
The plane light source includes a main body area, and a peripheral region located around the main body area. The plane light source includes first basal plate, multiple bars of first electrode, multiple dielectric patterns, fluorescent layer, multiple first fluorescent patterns, second basal plate, and a glue frame. Being collocated at first basal plate, first electrodes are arranged at the main body area and the peripheral region. The dielectric patterns cover first electrodes on the first basal plate. The fluorescent layer is collocated between dielectric patterns located inside main body area and peripheral region. First fluorescent patterns are collocated on fluorescent layer in peripheral region. Second basal plate is located above first basal plate. Being located between first basal plate and second basal plate, the glue frame is located outside peripheral region in order to joint first basal plate with second basal plate.
Description
Technical field
The invention relates to a kind of planar lamp source, and particularly relevant for a kind of planar lamp source with high brightness and high luminous uniformity.
Background technology
In recent years, most display screen is a main flow with display panels (Liquid Crystal Display panel, LCD panel) all.Yet, because display panels itself does not have luminous function, thus 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.Lamp source in the module backlight generally is that luminous lamp tube provides, and the light that fluorescent tube sent is again by the blooming piece in the module backlight and after carrying out scattering, forms an area source that is suitable for the irradiating liquid crystal display floater.
But, if can directly utilize planar lamp source, then can promote the utilization ratio of light and uniform surface light source more, and planar lamp source is except the backlight that can be applied to display panels, also can be applicable on many other fields.Therefore, planar lamp source has the advantage of its development.
Generally speaking, planar lamp source is a kind of luminescence of plasma element, and it mainly is to utilize to form a high voltage differential with the generation high energy electron between electrode pair, and clashes into inert gas (inert gas) and form so-called plasma via high energy electron.Afterwards, the excite state atom that is excited in the plasma can discharge energy to radiate ultraviolet mode, and the fluorescent material (phosphor) in the further excitation plane lamp of the ultraviolet ray meeting source of being radiated, to send visible light.
Yet the brightness around it of present planar lamp source is obviously dark or present the color of non-white light.This be because, in the edge of planar lamp source because of the luminous efficiency of fluorescent material luminous efficiency not as the center of planar lamp source.Therefore, the brightness around the planar lamp source is always darker.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of planar lamp source, it can solve known planar lamp source and have the lower shortcoming of brightness around it.
The present invention proposes a kind of planar lamp source, and it comprises a body region and is positioned at a body region marginal zone on every side.This planar lamp source comprises first substrate, many first electrodes, a plurality of dielectric pattern, a fluorescence coating, a plurality of first phosphor pattern, second substrate and glue frames.First electrode is to be disposed on first substrate, and first electrode can be arranged in body region and the marginal zone.Dielectric pattern covers first electrode on first substrate.Fluorescence coating is between these dielectric pattern that are disposed in body region and the marginal zone.First phosphor pattern is on the fluorescence coating that is disposed in the marginal zone.Second substrate is to be disposed at first substrate top.The glue frame is to be disposed between first substrate and second substrate, and is positioned at the outside of marginal zone, so that first substrate and second substrate are bonded together.
In one embodiment of this invention, the material of the first above-mentioned phosphor pattern is identical with the fluorescence coating material.
In one embodiment of this invention, this planar lamp source also comprises a plurality of second phosphor patterns, is disposed on the fluorescence coating in the body region.Preferably, be arranged on the density of second phosphor pattern of body region less than the density of first phosphor pattern that is arranged on the marginal zone.In one embodiment, the material of second phosphor pattern is identical with the fluorescence coating material.In another embodiment, the size of second phosphor pattern and first phosphor pattern is measure-alike.In another embodiment, the size of second phosphor pattern is different with the size of first phosphor pattern.
In one embodiment of this invention, this planar lamp source also comprises a reflector, is disposed on first substrate.
In one embodiment of this invention, this planar lamp source also comprises most separation materials, is disposed between first substrate and second substrate.
In one embodiment of this invention, this planar lamp source also comprises another fluorescence coating, is disposed on the surface of second substrate.
In one embodiment of this invention, this planar lamp source also comprises many second electrodes, is disposed on the surface of second substrate.
In planar lamp source of the present invention, dispose the luminosity of first phosphor pattern owing on the fluorescence coating of marginal zone, also comprising, so the present invention can solve the darker problem of brightness that has in conventional planar lamp source all around with the enhancing marginal zone.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Figure 1A is the generalized section according to the planar lamp source of a preferred embodiment of the present invention.
Figure 1B is the top view that is positioned at the member of second substrate in the planar lamp source of Figure 1A.
Fig. 2 A is the generalized section according to the planar lamp source of another preferred embodiment of the present invention.
Fig. 2 B is the top view that is positioned at the member of second substrate in the planar lamp source of Fig. 2 A.
Fig. 3 A and Fig. 3 B are the generalized sections according to the planar lamp source of preferred embodiment of the present invention.
Fig. 4 A and Fig. 4 B are the generalized sections according to the planar lamp source of preferred embodiment of the present invention.
The main element symbol description
102: body region
104: the marginal zone
106: the first substrates
108a: cathode electrode
108b: anode electrode
108: the first electrodes
109: dielectric pattern
110,116: fluorescence coating
112: the first phosphor patterns
114: the second substrates
118: the glue frame
119: confined space
120: the reflector
122: separation material
124: the second phosphor patterns
126: the second electrodes
Embodiment
Figure 1A is the generalized section according to the planar lamp source of a preferred embodiment of the present invention.Figure 1B is the top view of first substrate in the planar lamp source of Figure 1A.Please also refer to reference to Figure 1A and Figure 1B, planar lamp source of the present invention has a body region 102 and is positioned at body region 102 marginal zone 104 on every side.This planar lamp source comprises first substrate 106, many first electrodes 108, second substrate 114, a frame glue 118, a plurality of dielectric pattern 109, a fluorescence coating 110 and a plurality of first phosphor patterns 112.The material of first substrate 106 and second substrate 114 for example is transparent glass.Frame glue 118 is to be disposed between first substrate 106 and second substrate 114 in 104 outsides, marginal zone, and frame glue 118 is to be used for making two substrates 106,114 to be bonded together, and thus, can constitute a confined space 119 between frame glue 118 and the two substrates 106,114.In this confined space 119, then can insert a discharge gas.
Shown in Figure 1A, first electrode 108 is on configuration first substrate 106, and first electrode 108 can be arranged in body region 102 and the marginal zone 104.First electrode 108 can be divided into cathode electrode 108a and anode electrode 108b.Follow-uply high energy electron can be produced, just so-called plasma can be formed after these high energy electrons bump inert gases when between cathode electrode 108a and anode electrode 108b, forming a high voltage differential.In a preferred embodiment, the material of first electrode 108 comprises metal.
Particularly, also dispose many first phosphor patterns 112 on the fluorescence coating in marginal zone 104 110.In one embodiment, the material of first phosphor pattern 112 is identical with fluorescence coating 110 materials.And these first phosphor patterns 112 for example are to adopt screen printing processing procedure, spraying processing procedure or the like method to form.In addition, the length of first phosphor pattern 112 for example is between 0.1～5mm; The width of first phosphor pattern 112 for example is between 0.1～5mm; The height of first phosphor pattern 112 for example is between 0.03～0.4mm; Distance between adjacent two first phosphor patterns 112 for example is between 0.1～5mm.The visual reality of the size of first phosphor pattern 112 and density is required and adjust.That is to say that the quantity of first phosphor pattern 112 is many more, density is big more, then the brightness of marginal zone 104 will be high more.In addition, the first shown phosphor pattern 112 of accompanying drawing is to be example with the rectangle cube, but the present invention is not specially limited the shape of first phosphor pattern 112, it can also be cylindric or bullet, all can so long as can form raised design (salient point) on the fluorescence coating in the marginal zone 104 110.
Configuration first phosphor pattern 112 can make the fluorescence coating surface area of marginal zone 104 significantly promote on the fluorescence coating 110 in marginal zone 104.Therefore, the present invention can solve known planar lamp source and have the darker shortcoming of brightness in the marginal zone.And in a single day make after the marginal zone brightness lifting of planar lamp source, the luminous uniformity of planar lamp source integral body just can be improved.
In order more to improve the brightness of planar lamp source, above-mentioned planar lamp source is also optionally installed other members, is described as follows.Please refer to Figure 1A, in a preferred embodiment, this planar lamp source also can comprise a reflector 120, is disposed on the surface of first substrate 106.When light directive reflector 120 that planar lamp source produced, light will be reflected to the direction of second substrate 114, makes the light that planar lamp source produced all be gone out by 114 transmissions of second substrate.In addition, planar lamp source of the present invention also can comprise another fluorescence coating 116, and shown in Figure 1A, it is to be disposed on the surface of second substrate 114.This fluorescence coating 116 the brightness that can improve planar lamp source again is set.
According to another embodiment of the present invention, planar lamp source of the present invention also comprises a plurality of separation materials 122, and it is to be disposed between first substrate 106 and second substrate 114, so that maintain a fixed interval (FI) between the two substrates 106,114.Separation material might not be used for undersized planar lamp source, but generally all separation material 122 can be used for large-sized planar lamp source.Separation material 112 can be the gap ball (spacer ball) that is dispersed between the two substrates 106,114.Separation material 112 can also be formed in first substrate 106 or be formed on gap post on second substrate 114.
Fig. 2 A is the generalized section according to the planar lamp source of another preferred embodiment of the present invention.Fig. 2 B is the top view that is positioned at the member of second substrate in the planar lamp source of Fig. 2 A.Please be simultaneously with reference to Fig. 2 A and Fig. 2 B, the planar lamp source of Fig. 2 A is similar to the planar lamp source of Figure 1A, and difference is that the planar lamp source of Fig. 2 A also comprises a plurality of second phosphor patterns 124, is disposed on the fluorescence coating 110 of body region 102.Second phosphor pattern 124 is set on fluorescence coating 110 in addition the fluorescence coating surface area at this place is increased, to improve the brightness of planar lamp source.In other words, the planar lamp source of Fig. 2 A also is provided with second phosphor pattern 124 in body region 102 except being provided with in marginal zone 104 first phosphor pattern 112.In order to make the good luminous uniformity that has of body region 102 and marginal zone 104, the density that is arranged on first phosphor pattern 112 of marginal zone 104 can be come highly than the density of second phosphor pattern 124 that is arranged on body region 102.Thus, not only can increase the brightness of planar lamp source, and the whole luminous uniformity of planar lamp source is improved.In one embodiment, it is identical with fluorescence coating 110 materials to be arranged at the material of second phosphor pattern 124 in the body region 102.And the size of the size of second phosphor pattern 124 and first phosphor pattern 112 can be identical or inequality.
Fig. 3 A is the generalized section according to the planar lamp source of another preferred embodiment of the present invention.The planar lamp source that planar lamp source and Figure 1A illustrated that Fig. 3 A is illustrated is similar, and difference is that the reflector 120 in the planar lamp source of Fig. 3 A is to be disposed between first substrate 106 and first electrode 108.Just on first substrate 106, form earlier after the reflector 120, on reflector 120, form first electrode 108 again.Same, the planar lamp source of Fig. 3 A can required according to reality (for example size) and whether decision will dispose separation material (not illustrating) between two substrates 106,114.
Fig. 3 B is the generalized section according to the planar lamp source of another preferred embodiment of the present invention.The planar lamp source that the planar lamp source that Fig. 3 B is illustrated and Fig. 3 A are illustrated is similar, and difference is that the planar lamp source of Fig. 3 B also comprises second phosphor pattern 124, and it is to be configured on the fluorescence coating 110 of body region 102.In other words, the planar lamp source of Fig. 3 B is except being disposed at reflector 120 between first substrate 106 and first electrode 108, the fluorescence coating 110 of its marginal zone 104 is provided with first phosphor pattern 112, and the fluorescence coating 110 of body region 102 is provided with second phosphor pattern 124.
What deserves to be mentioned is that in above-mentioned several embodiment, first electrode 108 on first substrate 106 is that to be one group with two strip electrode 108a, 108b be that example illustrates.In fact, first electrode 108 can also be that the electrode more than three or three is one group (not showing).
Fig. 4 A is the generalized section according to the planar lamp source of another preferred embodiment of the present invention.The planar lamp source that planar lamp source and Figure 1A illustrated that Fig. 4 A is illustrated is similar, and difference is that the planar lamp source of Fig. 4 A also comprises second electrode 126, and it is to be disposed between second substrate 114 and the fluorescence coating 116.In this embodiment, first electrode 108 on first substrate 106 is as anode (or negative electrode), and second electrode 126 is as negative electrode (or anode) on second substrate 114.In other words, follow-uply high energy electron can be produced, just so-called plasma can be formed after these high energy electrons bump discharge gass when between two electrodes 108,126, forming a high voltage differential.
Fig. 4 B is the generalized section according to the planar lamp source of another preferred embodiment of the present invention.The planar lamp source that the planar lamp source that Fig. 4 B is illustrated and Fig. 4 A are illustrated is similar, and difference is that the planar lamp source of Fig. 4 B also comprises second phosphor pattern 124, and it is to be configured on the fluorescence coating 110 of body region 102.In other words, the planar lamp source of Fig. 4 B is except configuration second electrode 126 on second substrate 114, and the fluorescence coating 110 of its marginal zone 104 is provided with first phosphor pattern 112, and the fluorescence coating 110 of body region 102 is provided with second phosphor pattern 124.
Above-mentioned for several embodiment in, electrode be with simple strip shaped electric poles be example as an illustration, but the invention is not restricted to this.In fact, the shape of each electrode can also have other kinds variation, for example is to have to protrude most advanced and sophisticated strip shaped electric poles, non-rectilinear strip shaped electric poles or the like.
Comprehensive the above, planar lamp source of the present invention has the following advantages:
Because the present invention additionally is provided with the phosphor pattern of many projectioies in the marginal zone of planar lamp source, and the fluorescence coating surface area of marginal zone is increased, thereby has improved the luminosity at this place.So planar lamp source of the present invention has solved known planar lamp source and has had edge brightness problem on the low side.
Therefore the present invention can improve the luminous uniformity of planar lamp source integral body simultaneously because of improving the brightness of planar lamp source marginal zone.
The present invention can also be provided with phosphor pattern except being provided with the phosphor pattern in the marginal zone in body region, use the brightness that more improves planar lamp source.And by adjustment phosphor pattern density that is arranged on the marginal zone and the phosphor pattern density that is arranged on body region, the brightness of planar lamp source and the luminous uniformity all can be improved.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; anyly be familiar with present technique field 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. planar lamp source, it has a body region and is positioned at a marginal zone around this body region, and this planar lamp source comprises:
First substrate;
Many first electrodes are disposed on this first substrate, and these first electrodes can be arranged in this body region and this marginal zone;
A plurality of dielectric pattern cover these first electrodes on this first substrate;
One fluorescence coating is disposed between these dielectric pattern in this body region and this marginal zone;
A plurality of first phosphor patterns are disposed on this fluorescence coating in this marginal zone;
Second substrate is disposed at this first substrate top; And
One glue frame is disposed between this first substrate and this second substrate in this outside, marginal zone, so that this first substrate and this second substrate are bonded together.
2. planar lamp source as claimed in claim 1 is characterized in that, the material of these first phosphor patterns is identical with this fluorescence coating material.
3. planar lamp source as claimed in claim 1 is characterized in that, also comprises a plurality of second phosphor patterns, is disposed on this fluorescence coating in this body region.
4. planar lamp source as claimed in claim 3 is characterized in that, the density of these second phosphor patterns that is arranged on this body region is less than the density of these first phosphor patterns that are arranged on the marginal zone.
5. planar lamp source as claimed in claim 3 is characterized in that, the material of these second phosphor patterns is identical with this fluorescence coating material.
6. planar lamp source as claimed in claim 3 is characterized in that, the size of these second phosphor patterns and these first phosphor patterns measure-alike.
7. planar lamp source as claimed in claim 3 is characterized in that, the size of these second phosphor patterns is different with the size of these first phosphor patterns.
8. planar lamp source as claimed in claim 1 is characterized in that, also comprises a reflector, is disposed on the surface of this first substrate.
9. planar lamp source as claimed in claim 1 is characterized in that, also comprises most separation materials, is disposed between this first substrate and this second substrate.
10. planar lamp source as claimed in claim 1 is characterized in that, also comprises another fluorescence coating, is disposed on the surface of this second substrate.
11. planar lamp source as claimed in claim 1 is characterized in that, also comprises many second electrodes, is disposed on the surface of this second substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100956491A CN100557760C (en) | 2006-06-22 | 2006-06-22 | Planar lamp source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100956491A CN100557760C (en) | 2006-06-22 | 2006-06-22 | Planar lamp source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101093783A true CN101093783A (en) | 2007-12-26 |
| CN100557760C CN100557760C (en) | 2009-11-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100956491A Expired - Fee Related CN100557760C (en) | 2006-06-22 | 2006-06-22 | Planar lamp source |
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| CN (1) | CN100557760C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022267058A1 (en) * | 2021-06-25 | 2022-12-29 | 京东方科技集团股份有限公司 | Backlight module and display device |
-
2006
- 2006-06-22 CN CNB2006100956491A patent/CN100557760C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022267058A1 (en) * | 2021-06-25 | 2022-12-29 | 京东方科技集团股份有限公司 | Backlight module and display device |
| US11630348B2 (en) | 2021-06-25 | 2023-04-18 | BOE MLED Technology Co., Ltd. | Backlight modules and display devices |
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| Publication number | Publication date |
|---|---|
| CN100557760C (en) | 2009-11-04 |
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Owner name: CPT TECHNOLOGY (GROUP) CO., LTD. Free format text: FORMER OWNER: CHINA PROJECTION TUBE CO., LTD. Effective date: 20130717 |
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Free format text: CORRECT: ADDRESS; FROM: TAIWAN, CHINA TO: 350000 FUZHOU, FUJIAN PROVINCE |
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Effective date of registration: 20130717 Address after: 350000, No. 1, building 6, building No. third, fourth, Confucian Road West, Mawei District, Fujian, Fuzhou Patentee after: CPT DISPLAY TECHNOLOGY (SHENZHEN)CO., LTD. Address before: Taiwan, Taipei, China Zhongshan North Road three paragraph twenty-two Patentee before: Chunghwa Picture Tubes Ltd. |
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Granted publication date: 20091104 Termination date: 20190622 |