CN100371802C - Light source assembly - Google Patents
Light source assembly Download PDFInfo
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- CN100371802C CN100371802C CNB2006100057306A CN200610005730A CN100371802C CN 100371802 C CN100371802 C CN 100371802C CN B2006100057306 A CNB2006100057306 A CN B2006100057306A CN 200610005730 A CN200610005730 A CN 200610005730A CN 100371802 C CN100371802 C CN 100371802C
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- circuit board
- reflector plate
- hole
- light sources
- pointolites
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Abstract
The present invention relates to a light source assembly, which comprises a circuit board, a plurality of point light sources arranged on the circuit board and a reflecting sheet with a plurality of first holes, wherein the reflecting sheet is arranged on the circuit plate, each of the first holes respectively corresponds to each of the point light sources, and the periphery of each hole at least is provided with a cut line extending from the hole. The present invention also discloses a light source assembly, which comprises a circuit board, a plurality of point light sources arranged on the circuit board and a reflecting sheet with a plurality of first holes, wherein the reflecting sheet is arranged on the circuit plate, and each of the first holes respectively corresponds to each of the point light sources, wherein a bevel angle of 0 DEG to 90 DEG is formed between the reflecting sheet positioned at the periphery part of the hole and the circuit board.
Description
Technical field
The invention relates to a kind of light sources, particularly about a kind of be the light sources of light source with the light emitting diode.
Background technology
Now, LCD is generally used at various information display devices, its primary structure can be divided into panel module and backlight module two large divisions, and panel module comprises assemblies such as glass substrate, liquid crystal layer, alignment film, colored filter, polaroid, drive IC generally; Backlight module mainly comprises light source, light guide plate, prismatic lens, diffuser plate and reflector plate etc., provides the panel module light source by backlight module, to reach the purpose that information shows.The performance of lcd products integral body is subjected to the reciprocal effect of all intrawares, and wherein backlight module has been played the part of the key player on screen intensity, uniformity coefficient, contrast and visual angle.
Backlight module generally can be divided into two kinds of ora terminalis formula and straight-down negatives according to the position of light source, and the ora terminalis formula is that light source is placed the backlight module side end face, can reduce the thickness of backlight module, so majority is used in the portable liquid crystal display.Straight-down negative is that light source is placed in the backlight module below, can obtain homogeneity brightness preferably, and because of having bigger installing space, can install more light source, needing in the display device of high brightness, wide viewing angle to be suitable for.
Aspect light source, LED source will have breakthrough help to liquid crystal display product, and main cause is that the luminous efficacy of light emitting diode has obtained significantly to improve.It is generally acknowledged the light emitting diode of present stage, technical possessed the usefulness of cold cathode fluorescent lamp pipe about half, in addition to the luminous efficacy of light emitting diode in 2005 be expected to run neck and neck with the cold cathode fluorescent lamp pipe.Certainly, this only is with regard to the brightness aspect of light emitting diode, if the characteristic of the high reaction velocity of light emitting diode is used, red, blue, green three kinds of LED source are switched at a high speed in regular turn lit a lamp, then can replace the colored filter of high unit price in the liquid crystal panel.In view of this, LED source will be comprehensively and completely to the influence of liquid crystal display product future development trend.
Light emitting diode offers the light extraction efficiency of LCD, and except the luminescence efficiency meeting of light emitting diode itself was influential, the design and installation mode that is arranged at the other reflector plate of light emitting diode also can have suitable influence to light extraction efficiency.
In existing Technical Architecture, the area coverage of reflector plate and the light extraction efficiency of light emitting diode have remarkable influence.
Please refer to Figure 1A and Figure 1B.In conventional art, when using a plurality of light emitting diodes 200 (being the masterpiece explanation with among the figure) as light source, because some factor, may cause the position that is provided with of each light emitting diode 200 to have a little change, therefore, for the assembling nargin of considering that reflector plate 300 pastes, reflector plate 300 needs to reserve bigger opening 350.Therefore cause the area coverage of reflector plate 300 to diminish.Perhaps, in some cases, because light emitting diode 200 is to electrically connect with mode and the circuit board 100 that welds by the leg 250 of scolder 400 with light emitting diode 200; But, because the irregular face that connects that welding causes will cause reflector plate 300 to paste bad phenomenon, so opening 350 essential increasings of reflector plate 300, to avoid the welding position, therefore also can cause the area coverage of reflector plate 300 to diminish.
In view of this, how to improve the area coverage of the reflector plate 300 that is arranged at light emitting diode 200 sides, and then can effectively improve the light extraction efficiency of the light source of backlight module, be the direction that the insider endeavoured.
Summary of the invention
Fundamental purpose of the present invention provides a kind of light sources that can effectively improve the light extraction efficiency of light source, is the light sources of light source about can effectively improving with the light emitting diode particularly.
According to one embodiment of the present invention, this light sources comprises: a circuit board; A plurality of pointolites are arranged on this circuit board; And a reflector plate, having a plurality of first holes, this reflector plate is arranged on this circuit board, and each first hole corresponds to each pointolite respectively, and each first hole periphery has a line of cut at least and extends from this first hole.
According to another preferred embodiment of the present invention, this light sources comprises: at least two circuit boards; A plurality of pointolites, these a plurality of pointolites are that the mode with inverse bonding is arranged between this two circuit board at least; And a reflector plate, having a plurality of first holes, this reflector plate is arranged on this two circuit board at least, and each first hole is to correspond to each pointolite respectively, and each first hole periphery has a line of cut at least and extends from this first hole.
According to the present invention's preferred embodiment again, this light sources comprises: a circuit board; A plurality of pointolites are arranged on this circuit board; An and reflector plate, have a plurality of first holes, this reflector plate is arranged on this circuit board, and each first hole corresponds to each pointolite respectively, wherein, between the reflector plate of each first hole peripheral part and this circuit board, form one between the oblique angles of 0 degree to 90 degree.
According to the another preferred embodiment of the present invention, this light sources comprises: at least two circuit boards; A plurality of pointolites, these a plurality of pointolites are that the mode with inverse bonding is arranged between this two circuit board at least; An and reflector plate, have a plurality of first holes, this reflector plate is arranged on this two circuit board at least, each first hole corresponds to each pointolite respectively, wherein, between the reflector plate of each first hole peripheral part and this two circuit board, form one at least between the oblique angles of 0 degree to 90 degree.
For above and other objects of the present invention, feature and advantage can be become apparent, cited below particularlyly go out preferred embodiment, and conjunction with figs., be described in detail below:
Description of drawings
Figure 1A is a conventional art light sources synoptic diagram (front view).
Figure 1B is a conventional art light sources synoptic diagram (top view).
Fig. 2 is a reflector plate embodiment of the present invention.
Fig. 3 A is an embodiment synoptic diagram (front view) of light sources of the present invention.
Fig. 3 B is an embodiment synoptic diagram (top view) of light sources of the present invention.
Fig. 4 is used to illustrate the increasable reflector plate reflective surface area of the present invention.
Fig. 5 is arranged at the synoptic diagram of circuit board in the inverse bonding mode for pointolite of the present invention.
Fig. 6 has an embodiment synoptic diagram of the light sources of a plurality of pointolites for the present invention.
Fig. 7 has another embodiment synoptic diagram of the light sources of a plurality of pointolites for the present invention.
Fig. 8 has an embodiment synoptic diagram again of the light sources of a plurality of pointolites for the present invention.
Fig. 9 has the another embodiment synoptic diagram of the light sources of a plurality of pointolites for the present invention.
Figure 10 is that pointolite inverse bonding of the present invention is in the another kind of example of circuit board.
The primary clustering symbol description
1,2,3,4～light sources; 100～circuit board;
200～light emitting diode; 250～leg;
300～reflector plate; 350～hole;
400～scolder; 500～circuit board;
600～light emitting diode; 650～leg;
700～reflector plate; 750～hole;
760～line of cut; 800～scolder;
The reflective surface area of A～increase; θ～oblique angle;
500 '～circuit board; 600 '～light emitting diode;
650 '～leg; 700 '～reflector plate;
800 '～scolder; 1500～circuit board;
1600～light emitting diode; 1650～leg;
1700～reflector plate; 1750～hole;
1500 '～circuit board; 1600 '～light emitting diode;
1650 '～leg; 1700 '～reflector plate;
1750 '～hole; 2500～circuit board;
3000～hole.
Embodiment
Please refer to Fig. 2, its demonstration can be for a kind of reflector plate 700 of light sources use of the present invention.Reflector plate 700 has a plurality of holes 750 when reality is used, and still, for simplicity, only lists the reflector plate 700 with a hole 750 in this figure.Periphery in hole 750 has 760 extensions of a line of cut at least from this hole 750.In Fig. 2, the periphery of hole 750 has four lines of cut 760, extends the periphery from this hole 750 separately.Certainly, line of cut 760 can also be looked the needs of actual fabrication process for extending the line from these hole 750 central points, and is to extend from the periphery of this hole 750 but have the not line of cut of specific direction.The number of line of cut 760 is under the tetragonal situation in hole 750, and is comparatively easy with the design of four symmetrical lines of cut 760 being positioned at tetragonal four corners.In hole 750 is under the situation of N limit shape, comparatively easy with the design of the N bar symmetry line of cut 760 in N corner being positioned at N limit shape.In hole 750 is under the situation of circle, then is the symcenter point with the center of circle, and mean allocation is comparatively easy in the design of several lines of cut 760 of circumference.But on practice, the shape of hole 750 mainly is the use that cooperates light source, does not have certain restriction, so the demand that can look design, and the line of cut 760 that design has different numbers and allocation scheme.But the length of each bar line of cut 760 is the matching design demand also, and different length variations is arranged.In addition, the formation method of line of cut 760 and hole 750 does not have certain restriction, and it can utilize impression, cutting, even the mode of punching press (punch) is obtained.For simplifying manufacture craft, in the preferred case, line of cut 760 and hole 750 can form in same manufacturing step simultaneously.
Please refer to shown in Fig. 3 A and Fig. 3 B, be the synoptic diagram of light sources of the present invention.For simplicity, in this figure, only list 500, one pointolites of a circuit board (for example light emitting diode 600), be arranged on this circuit board 500 in the mode of welding, and a reflector plate 700.Wherein, reflector plate 700 has a described hole 750 and corresponds to pointolite (light emitting diode 600), and hole 750 peripheries as shown in Figure 2, have a line of cut 760 at least and extend from this hole 750.The size of hole 750 is slightly less than the size of pointolite (light emitting diode 600), under the preferable case, is arranged at after this circuit board 500 with this reflector plate 700, and the light-emitting area that can not cover pointolite (light emitting diode 600) is a cardinal rule.Pointolite (light emitting diode 600) has the luminous light-emitting area that makes progress in the present embodiment, and reflector plate 700 does not cover the light-emitting area of pointolite (light emitting diode 600).
After reflector plate 700 is arranged at this circuit board 500, between the reflector plate 700 of hole 750 peripheral parts and this circuit board 500, form one between the oblique angle θ of 0 degree to 90 degree.The angle of this oblique angle θ can change to some extent according to the amount of leg 650 length of the height of pointolite (light emitting diode 600) and pointolite (light emitting diode 600) and scolder 800.In this figure, reflector plate 700 only exposes the light-emitting area of pointolite (light emitting diode 600), yet, on practice, not as limit, as long as can cover leg 650 and scolder 800.
Please refer to Fig. 4.Around the regional A representative of pointolite (light emitting diode 600) design via reflector plate 700 of the present invention, under preferable case, the reflective surface area that can increase.That is to say,, can improve the total area with the closely-related reflector plate 700 of the light extraction efficiency of pointolite, therefore can improve the light extraction efficiency of pointolite via the design of reflector plate 700 of the present invention.
In the foregoing description, pointolite (light emitting diode 600) is to be arranged on this circuit board 500 with general welding manner.In another embodiment, please refer to Fig. 5, the leg 650 ' of pointolite (light emitting diode 600 ') is the below via circuit board 500 ', in the mode of scolder 800 ' with inverse bonding, pointolite (light emitting diode 600 ') is arranged on this circuit board 500 '.
Please refer to Fig. 6, have an embodiment synoptic diagram of the light sources of a plurality of pointolites for the present invention.Please also refer to Fig. 3 A, light sources 1 comprises: a circuit board 500, a plurality of pointolites 600 are arranged on this circuit board 500, and a reflector plate 700, have a plurality of first holes 750.This reflector plate 700 is arranged on this circuit board 500, and each first hole 750 corresponds to each pointolite 600 respectively, and each hole 750 periphery has 760 extensions of a line of cut at least from this hole 750.
Please refer to Fig. 7, have another embodiment synoptic diagram of the light sources of a plurality of pointolites for the present invention.Please also refer to Fig. 5, light sources 2, comprise: at least two circuit boards 500 ', a plurality of pointolites 600 ', these a plurality of pointolites 600 ' are that the mode with inverse bonding is arranged between this two circuit board 500 ' at least, an and reflector plate 700 ', have a plurality of holes 750 ', this reflector plate 700 ' is arranged on this two circuit board 500 ' at least, each hole 750 ' corresponds to each pointolite 600 ' respectively, and each hole 750 ' periphery has the 760 ' extension of a line of cut at least from this hole 750 '.
Please refer to Fig. 8, have an embodiment synoptic diagram again of the light sources of a plurality of pointolites for the present invention.Please also refer to Fig. 3 A, light sources 3, comprise: a circuit board 1500, a plurality of pointolites 1600 are arranged on this circuit board 1500, an and reflector plate 1700, have a plurality of first holes 1750, this reflector plate 1700 is arranged on this circuit board 1500, and each first hole 1750 corresponds to each pointolite 1600 respectively, wherein, between the reflector plate 1700 of each hole 1750 peripheral part and circuit board 1500, form one between the oblique angle θs of 0 degree to 90 degree.
In the present embodiment, reflector plate 1700 can adopt has deformable material, for example has the resin film of reflecting effect, and therefore, reflector plate 1700 does not need to have line of cut.Reflector plate 1700 can be because of deformation effect after being arranged at circuit board 1500, and makes form one between the oblique angle θs of 0 degree to 90 degree between the reflector plate 1700 of hole 1750 peripheral parts and circuit board 1500.
Please refer to Fig. 9, have the another embodiment synoptic diagram of the light sources of a plurality of pointolites for the present invention.Please also refer to Fig. 5, light sources 4, comprise: at least two circuit boards 1500 ', a plurality of pointolites 1600 ', these a plurality of pointolites 1600 ' are that the mode with inverse bonding is arranged between this two circuit board 1500 ' at least, an and reflector plate 1700 ', have a plurality of holes 1750 ', this reflector plate 1700 ' is arranged on this two circuit board 1500 ' at least, each hole 1750 ' corresponds to each pointolite 1600 ' respectively, wherein, be positioned at and form one between the reflector plate 1700 ' of each hole 1750 ' peripheral part and this circuit board 1500 ' between the oblique angle θ of 0 degree to 90 degree.
In the present embodiment, reflector plate 1700 ' can adopt has deformable material, for example has the resin film of reflecting effect, and therefore, reflector plate 1700 ' does not need to have line of cut.Reflector plate 1700 ' can be because of deformation effect after being arranged at circuit board 1500 ', and make form between the reflector plate 1700 ' that is positioned at hole 1750 ' peripheral part and the circuit board 150 ' 0 one between 0 degree to the 90 oblique angle θ that spend.
Other please refer to Figure 10, for pointolite 2600 inverse bondings of the present invention in the another kind of example of circuit board 2500.Circuit board 2500 has a plurality of second holes 3000 (for simplicity, only list two second holes 3000 in the accompanying drawing), each second hole 3000 corresponds at least one pointolite 2600 respectively (for simplicity, only list two pointolites 2600 in the accompanying drawing), described pointolite 2600 is that the mode with inverse bonding is arranged on this circuit board 2500.In the accompanying drawings, be that example illustrates with corresponding two pointolites 2600 of one second hole 3000, still on practice, one second hole 3000 can correspond to one, the pointolite more than two or two 2600.
In this case embodiment, though be to be that example illustrates with the light emitting diode,, so long as pointolite, all applicable technology of the present invention.For the exiting surface of grazing point light source not, and reduce the light extraction efficiency of integrated light source, therefore, be applicable to that the pointolite of the technology of the present invention serves as preferred to have the luminous pointolite that makes progress.
Though the present invention with several preferred embodiments openly as above; right its is not in order to qualification the present invention, any insider, without departing from the spirit and scope of the present invention; when can changing arbitrarily and retouching, so protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (12)
1. light sources comprises:
One circuit board;
A plurality of pointolites are arranged on this circuit board; And
One reflector plate has a plurality of first holes, and this reflector plate is arranged on this circuit board, and each first hole corresponds to each pointolite respectively, and each first hole periphery has a line of cut extension at least from this first hole.
2. light sources according to claim 1 is characterized in that, these a plurality of pointolites are to be arranged on this circuit board in the mode of welding.
3. light sources according to claim 1 is characterized in that, this circuit board has a plurality of second holes, and each second hole corresponds at least one pointolite respectively, and these a plurality of pointolites are that the mode with inverse bonding is arranged on this circuit board.
4. light sources according to claim 1 is characterized in that, these a plurality of pointolites are light emitting diode.
5. light sources comprises:
At least two circuit boards;
A plurality of pointolites, these a plurality of pointolites are that the mode with inverse bonding is arranged between this two circuit board at least; And
One reflector plate has a plurality of first holes, and this reflector plate is arranged on this two circuit board at least, and each first hole corresponds to each pointolite respectively, and each first hole periphery has a line of cut extension at least from this first hole.
6. light sources according to claim 5 is characterized in that, these a plurality of pointolites are light emitting diode.
7. light sources comprises:
One circuit board;
A plurality of pointolites are arranged on this circuit board; And
One reflector plate, have a plurality of first holes, this reflector plate is arranged on this circuit board, and each first hole corresponds to each pointolite respectively, wherein, between the reflector plate of each first hole peripheral part and this circuit board, form one between the oblique angles of 0 degree to 90 degree.
8. light sources according to claim 7 is characterized in that, these a plurality of pointolites are to be arranged on this circuit board in the mode of welding.
9. light sources according to claim 8 is characterized in that, this circuit board has a plurality of second holes, and each second hole corresponds at least one pointolite respectively, and these a plurality of pointolites are that the mode with inverse bonding is arranged on this circuit board.
10. light sources according to claim 7 is characterized in that, these a plurality of pointolites are light emitting diode.
11. a light sources comprises:
At least two circuit boards;
A plurality of pointolites, these a plurality of pointolites are that the mode with inverse bonding is arranged between this two circuit board at least; And
One reflector plate, have a plurality of first holes, this reflector plate is arranged on this two circuit board at least, each first hole corresponds to each pointolite respectively, wherein, between the reflector plate of each first hole peripheral part and this two circuit board, form one at least between the oblique angles of 0 degree to 90 degree.
12. light sources according to claim 11 is characterized in that, these a plurality of pointolites are light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100057306A CN100371802C (en) | 2006-01-06 | 2006-01-06 | Light source assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100057306A CN100371802C (en) | 2006-01-06 | 2006-01-06 | Light source assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1800945A CN1800945A (en) | 2006-07-12 |
| CN100371802C true CN100371802C (en) | 2008-02-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100057306A Active CN100371802C (en) | 2006-01-06 | 2006-01-06 | Light source assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100371802C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563460B (en) * | 2010-01-19 | 2013-12-18 | 友达光电股份有限公司 | Light source structure and backlight module |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001195904A (en) * | 2000-01-12 | 2001-07-19 | Gc Corp | Roentgen film viewer and display apparatus |
| JP2002072901A (en) * | 2000-08-25 | 2002-03-12 | Nippon Seiki Co Ltd | Back light device |
| CN1702523A (en) * | 2004-05-24 | 2005-11-30 | 株式会社日立显示器 | Display device and backlight device |
-
2006
- 2006-01-06 CN CNB2006100057306A patent/CN100371802C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001195904A (en) * | 2000-01-12 | 2001-07-19 | Gc Corp | Roentgen film viewer and display apparatus |
| JP2002072901A (en) * | 2000-08-25 | 2002-03-12 | Nippon Seiki Co Ltd | Back light device |
| CN1702523A (en) * | 2004-05-24 | 2005-11-30 | 株式会社日立显示器 | Display device and backlight device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1800945A (en) | 2006-07-12 |
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