CN1844990A - Backlight module and flat panel display - Google Patents
Backlight module and flat panel display Download PDFInfo
- Publication number
- CN1844990A CN1844990A CN 200610082744 CN200610082744A CN1844990A CN 1844990 A CN1844990 A CN 1844990A CN 200610082744 CN200610082744 CN 200610082744 CN 200610082744 A CN200610082744 A CN 200610082744A CN 1844990 A CN1844990 A CN 1844990A
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- backlight module
- light source
- backboard
- module according
- outer electrode
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Abstract
The invention discloses an aphototropism module, which comprises a back plate, a light source, and a separator. Wherein, the light source has two opposite external electrode; the back plate has at least one through hole under at least one external electrode; the separator is on the back plate to keep a fixed distance between the light source and the back plate.
Description
Technical field
The invention relates to a kind of backlight module of flat-panel screens, particularly about a kind of backlight module that can avoid producing stray-capacity effect.
Background technology
General LCD can roughly be divided into two partly: one is liquid crystal panel, and another then is the backlight module that places the liquid crystal panel rear, is used to provide light source.See also Fig. 1, it illustrates the structural representation of traditional backlight module.As shown in FIG., backlight module 1 has comprised a backboard 2, a light source 3 and a support member 4.Light source 3 can adopt outer electrode formula light source, for example plane fluorescent fluorescent tube (FlatFluorescent Lamp; Or external electrode fluorescent lamp pipe (External ElectrodeFluorescent Lamp FFL); EEFL).This kind outer electrode formula light source 3 has two electrodes 31,32 that are arranged at outside the fluorescent tube 30.Support member 4 is arranged between light source 3 and the backboard 2, is used for supporting light sources 3, makes 2 of light source 3 and backboards can keep a constant spacing.
The principle of luminosity of external electrode fluorescent lamp pipe is by the mercury vapour of secondary electron bump fluorescent tube 30 inside, produces plasma, sends ultraviolet light, and by exciting the fluorescent powder of coating fluorescent tube 30 tube walls to be converted into visible light.On the other hand, the principle of luminosity of the principle of luminosity of plane fluorescent fluorescent tube and external electrode fluorescent lamp pipe is similar, and maximum difference is that the external form of fluorescent tube is the plane pattern.
Yet,, all need higher voltage to drive usually, and the material of the backboard 2 of backlight module 1 is generally metal no matter be external electrode fluorescent lamp pipe or outer electrode planar light source.When driving the light source 3 of outer electrode formula, be easy to generate unnecessary stray capacitance between metal backing 2 and the outer electrode 31,32, thereby reduce whole lighting efficiency backlight.
Summary of the invention
Because the problem that above-mentioned conventional art met with the invention provides a kind of backlight module, it comprises: a backboard, a light source and a sept; Wherein, light source has two relative outer electrodes, has at least one through hole on the backboard, is positioned at the below, position with respect at least one outer electrode.Sept is arranged on the backboard, is used for keeping light source and backboard at a constant spacing.
In addition, the present invention also provides a kind of flat-panel screens, comprising: a backlight module and a display panel; Wherein, this display panel is arranged at the top of this backlight module.Above-mentioned light source has two relative outer electrodes, has at least one through hole on the backboard, and the position is below the position with respect at least one outer electrode.Sept is arranged on the backboard, is used for keeping light source and backboard at a constant spacing.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, preferably especially exemplified by preferred implementation, and conjunction with figs., be described in detail below.Yet following preferred implementation is only for reference and explanation usefulness with figure, is not to be used for the present invention is limited.
Description of drawings
Fig. 1 is the structural representation of traditional backlight module.
Fig. 2 is the structural representation of backlight module of the present invention.
Fig. 3 is the synoptic diagram of the relative position of through hole on the backboard of backlight module of the present invention and outer electrode.
Fig. 4 is another synoptic diagram of the relative position of through hole on the backboard of backlight module of the present invention and outer electrode.
Fig. 5 is another synoptic diagram of the relative position of through hole on the backboard of backlight module of the present invention and outer electrode.
Fig. 6 is another synoptic diagram of the relative position of through hole on the backboard of backlight module of the present invention and outer electrode.
The main element symbol description
1 backlight module, 2 backboards
3 light sources, 4 support members
5 backlight modules, 6 backboards
7 light sources, 8 septs
9 high temperature insulation sheets, 10 reflector plates
11 diffuser plates, 12 display panels
13 stilts, 14 blooming pieces
30 fluorescent tubes, 31 electrodes
32 electrodes, 61 through holes
70 fluorescent tubes, 71 outer electrodes
72 outer electrodes
Embodiment
Fig. 2 is the structural representation of backlight module of the present invention.As shown in FIG., backlight module 5 comprises: a backboard 6, a light source 7 and a sept 8.
In the present embodiment, light source 7 comprises fluorescent tube 70 and lays respectively at the outer electrode 71,72 of fluorescent tube 70 relative two sides.Have two through holes 61 on the backboard 6, the position is below two outer electrodes 71,72 respectively.Sept 8 is arranged on the backboard 6, is used for light source support 7, makes light source 7 and backboard 6 can keep a constant spacing.Certainly in real example, as long as externally have through hole 61 on the backboard 6 of electrode below, for example only form a through hole 61 below of an outer electrode (71 or 72) therein, still contained by scope of the present invention.
At this moment, under outer electrode 71,72, there is not the backboard 6 of metal, can reduces the situation that stray-capacity effect exists.
According to embodiments of the invention, light source 7 can be plane fluorescent fluorescent tube (Flat FluorescentLamp; FFL), external electrode fluorescent lamp pipe (External Electrode Fluorescent Lamp; Or the fluorescent tube of the outer electrode of other types EEFL).
Sept 8 can be an insulating part, as plastics etc.In certain embodiments of the present invention, can fill some tinsels in the sept 8, be used for avoiding the electromagnetic interference (EMI) that is produced because of the backboard through hole.The heat that light source 7 produces according to a preferred embodiment of the invention, between sept 8 and light source 7, also can comprise a high temperature insulation sheet 9, so that can directly not reach sept 8.
According to a preferred embodiment of the invention, one reflector plate 10 also can be set on the backlight module 5, and smooth on backboard 6, the light from light source 7 can be reused fully, make the light can be fully and expose to the diffuser plate 11 that is arranged at light source 7 tops equably simultaneously; Wherein, diffuser plate 11 is to place the stilt 13 on the outer electrode to support by at least one, makes 7 of diffuser plate 11 and light sources exist enough gaps to carry out mixed light.
Backlight module 5 disclosed in this invention can use on flat-panel screens, and this flat-panel screens can comprise a display panel 12 and the blooming piece 14 that is positioned at backlight module 5 tops.
Fig. 3 is the synoptic diagram of the through hole on the backboard 6 of backlight module 5 of the present invention 61 with the relative position of outer electrode 71,72.The width of through hole 61 (as " d " among the figure) can be big than the width (as " w " among the figure) of outer electrode 71,72, or equate with the width of outer electrode 71,72, i.e. w≤d.
Fig. 4 is the through hole on the backboard 6 of backlight module 5 of the present invention 61 another synoptic diagram with the relative position of outer electrode 71,72.The width d of through hole 61 also can be little than the width w of outer electrode 71,72, i.e. w＞d.
Fig. 5 is another synoptic diagram of the relative position of through hole on the backboard of backlight module of the present invention and outer electrode.In this embodiment, light source 7 is the external electrode fluorescent lamp pipe, and backboard 6 has a plurality of through holes 61 respectively in outer electrode 71,72 parts of correspondence connection fluorescent tube 70 2 ends.
Fig. 6 is another synoptic diagram of the relative position of through hole on the backboard of backlight module of the present invention and outer electrode.At light source 7 is under the situation of external electrode fluorescent lamp pipe, and the through hole 61 of corresponding two outer electrodes 71,72 also can be the whole structure that is communicated with.
In sum, backlight module of the present invention and flat-panel screens not only can solve the ill effect that the traditional backlight module can produce stray capacitance, and the function of avoiding the electromagnetic interference (EMI) that produced because of the backboard through hole is more arranged.
The above only is the preferred embodiments of the present invention, and is all according to equalization variation and modification that the present invention did, all should belong to covering scope of the present invention.
Claims (13)
1. backlight module comprises:
One light source has first outer electrode and second outer electrode;
One backboard has first through hole, is positioned at the below of this first outer electrode; And
One sept is arranged on this backboard, makes between this light source and this backboard to be a spacing.
2. backlight module according to claim 1, wherein this backboard has second through hole in addition, is positioned at the below of this second outer electrode.
3. backlight module according to claim 1, wherein the width of this first through hole is more than or equal to the width of this first outer electrode.
4. backlight module according to claim 1, wherein the width of this first through hole is less than the width of this first outer electrode.
5. backlight module according to claim 1 and 2, wherein this light source comprises a plane fluorescent fluorescent tube.
6. backlight module according to claim 1 and 2, wherein this light source comprises an external electrode fluorescent lamp pipe.
7. backlight module according to claim 1 and 2 also comprises a high temperature insulation sheet, is arranged between this sept and this light source.
8. backlight module according to claim 1 and 2, wherein this sept is an insulating part.
9. backlight module according to claim 6, wherein this sept is plastics.
10. backlight module according to claim 1 and 2 is wherein filled at least one tinsel in this sept.
11. backlight module according to claim 1 and 2 also comprises a diffuser plate, is arranged at the top of this light source.
12. backlight module according to claim 1 and 2 also comprises a reflector plate, is arranged on this backboard.
13. a flat-panel screens comprises:
One backlight module according to claim 1; And
One display panel is arranged at the top of this backlight module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610082744 CN1844990A (en) | 2006-05-15 | 2006-05-15 | Backlight module and flat panel display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610082744 CN1844990A (en) | 2006-05-15 | 2006-05-15 | Backlight module and flat panel display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1844990A true CN1844990A (en) | 2006-10-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610082744 Pending CN1844990A (en) | 2006-05-15 | 2006-05-15 | Backlight module and flat panel display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1844990A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047588A (en) * | 2013-01-06 | 2013-04-17 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display utilizing same |
| CN104460111A (en) * | 2014-12-08 | 2015-03-25 | 厦门天马微电子有限公司 | Backlight module and liquid crystal display device |
-
2006
- 2006-05-15 CN CN 200610082744 patent/CN1844990A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047588A (en) * | 2013-01-06 | 2013-04-17 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display utilizing same |
| CN104460111A (en) * | 2014-12-08 | 2015-03-25 | 厦门天马微电子有限公司 | Backlight module and liquid crystal display device |
| CN104460111B (en) * | 2014-12-08 | 2017-11-10 | 厦门天马微电子有限公司 | A kind of backlight module and liquid crystal display device |
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