CN101609228A - The light source module of liquid crystal display backlight module and direct-light-type backlight - Google Patents
The light source module of liquid crystal display backlight module and direct-light-type backlight Download PDFInfo
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- CN101609228A CN101609228A CNA2008101270017A CN200810127001A CN101609228A CN 101609228 A CN101609228 A CN 101609228A CN A2008101270017 A CNA2008101270017 A CN A2008101270017A CN 200810127001 A CN200810127001 A CN 200810127001A CN 101609228 A CN101609228 A CN 101609228A
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Abstract
The invention provides a kind of light source module and direct-light-type backlight of liquid crystal display backlight module.Wherein, this liquid crystal display backlight module comprises: circuit substrate and a plurality of light emitting diode are arranged on this circuit substrate.Each light emitting diode has the far field pattern of broad, and each light emitting diode has at least one LED crystal particle and a mould grain is sealed this LED crystal particle.Wherein, above-mentioned a plurality of LED crystal particle is electrically connected with circuit on the circuit substrate.The present invention can make the thickness of backlight module be easier to accomplish that slimming or easy mixed light become even planar light source.
Description
Technical field
The present invention is relevant for a kind of electronic product; Especially relevant for a kind of light source module of LCD.
Background technology
Light emitting diode is used in daily life, is more and more universal.Every indicating equipment, light fixture, uniform surface light source is provided or is applied in backlight liquid crystal display module etc., can see light emitting diode.
Fig. 1 illustrates a kind of diagrammatic cross-section of light emitting diode.Above-mentioned light emitting diode, its packaging body that uses 110 is plastic leaded chip carrier (Plastic Leadframe Chip Carrier; PLCC).This kind light emitting diode can be applicable to the backlight module of the directly-down liquid crystal display that uses the RGB Tricolor LED.
The light emitting diode of Fig. 1 can have far field pattern 112 (far-field pattern).Fig. 2 promptly illustrates the far field pattern synoptic diagram of the light emitting diode of Fig. 1.See also Fig. 2, the lighting angle of the mould grain 116 of above-mentioned light emitting diode is not more than 120 degree.In addition also can consult Fig. 3, it promptly illustrates each lighting angle of light emitting diode of Fig. 2 and the coordinate diagram of intensity.
See also Fig. 3 and Fig. 2, use the light emitting diode of the mould grain 116 of Fig. 1, suitable narrow of its far field pattern 112, in the positions of 120 degree, often without any light beam.In other words, above-mentioned lumination of light emitting diode zone is too concentrated.
Above-mentioned light emitting diode, the rim of a cup 102 of its reflex reflector 100 has the degree of depth.If with this kind light emitting diode, be used to make the light source module of liquid crystal display backlight module, the thickness of its backlight module is not easy to accomplish slimming.In addition, the light-emitting zone of above-mentioned light emitting diode is concentrated, and for plane light source module, is not easy mixed light and becomes even planar light source.
Therefore, be necessary to propose a kind of light source module of liquid crystal display backlight module, its easy mixed light becomes even planar light source, or accomplishes slimming for the thickness of backlight liquid crystal display module easily.
Summary of the invention
One of the object of the invention is to provide a kind of light source module of liquid crystal display backlight module, and the thickness of its backlight module is easier to accomplish slimming, or mixed light becomes even planar light source easily.
Another object of the present invention is to provide a kind of direct-light-type backlight that is used for LCD.
For reaching above-mentioned or other purpose, the present invention discloses a kind of light source module of liquid crystal display backlight module, and it comprises that circuit substrate and a plurality of light emitting diode are arranged on this circuit substrate.Each light emitting diode has the far field pattern of broad, and each light emitting diode has at least one LED crystal particle and the mould grain is sealed this LED crystal particle.Wherein, above-mentioned a plurality of LED crystal particle is electrically connected with circuit on the circuit substrate.
The present invention also provides a kind of light source module of liquid crystal display backlight module, comprising: circuit substrate; And a plurality of light emitting diodes, being arranged on this circuit substrate, each light emitting diode has LED crystal particle and to shift the mold pressing or the mode of injection-molding the mould grain is sealed this LED crystal particle; Wherein above-mentioned a plurality of LED crystal particle are electrically connected with circuit on this circuit substrate.
The light source module of aforesaid liquid crystal display backlight module, wherein above-mentioned each light emitting diode has the far field pattern of broad.
The light source module of aforesaid liquid crystal display backlight module, the surface of wherein above-mentioned mould grain can be plane, convex surface or concave curved surface.
The light source module of aforesaid liquid crystal display backlight module, the surface of wherein above-mentioned mould grain has irregular microstructure.
The light source module of aforesaid liquid crystal display backlight module, the material of wherein above-mentioned mould grain can be the potpourri of epoxy resin, siloxane or epoxy resin and siloxane.
The light source module of aforesaid liquid crystal display backlight module, wherein the foregoing circuit substrate can be tellite, ceramic substrate, aluminium base, aluminium nitride substrate or copper clad laminate.
Above-mentioned light source module can make the thickness of backlight module be easier to accomplish that slimming or easy mixed light become even planar light source.
Also for a kind of direct-light-type backlight that is used for LCD, it comprises a plurality of light source modules in the present invention.Each light source module has circuit substrate and a plurality of light emitting diode is arranged on this circuit substrate.Each light emitting diode no-reflection device is in order to optically focused.Wherein, above-mentioned a plurality of LED crystal particle are electrically connected with circuit on this circuit substrate.Above-mentioned a plurality of light source module is arranged in a plane each other makes a plurality of light emitting diodes on the different light source modules be arranged in planar light source in staggered mode.
The aforesaid direct-light-type backlight that is used for LCD, wherein above-mentioned each light emitting diode has the far field pattern of broad.
The aforesaid direct-light-type backlight that is used for LCD, the surface of wherein above-mentioned mould grain can be plane, convex surface or concave curved surface.
The aforesaid direct-light-type backlight that is used for LCD, the surface of wherein above-mentioned mould grain has irregular microstructure.
The aforesaid direct-light-type backlight that is used for LCD, the material of wherein above-mentioned mould grain can be the potpourri of epoxy resin, siloxane or epoxy resin and siloxane.
The aforesaid direct-light-type backlight that is used for LCD, wherein the foregoing circuit substrate can be tellite, ceramic substrate, aluminium base, aluminium nitride substrate or copper clad laminate.
The present invention can make the thickness of backlight module be easier to accomplish that slimming or easy mixed light become even planar light source.
Description of drawings
Fig. 1 is the diagrammatic cross-section that a kind of light emitting diode is shown;
Fig. 2 is the far field pattern synoptic diagram that the light emitting diode of Fig. 1 is shown;
Fig. 3 illustrates each lighting angle of light emitting diode of Fig. 2 and the coordinate diagram of intensity;
Fig. 4 is the diagrammatic cross-section that illustrates according to a kind of light emitting diode of first preferred embodiment of the invention;
Fig. 5 is the far field pattern synoptic diagram that the light emitting diode of Fig. 4 is shown;
Fig. 6 illustrates each lighting angle of light emitting diode of Fig. 5 and the coordinate diagram of intensity;
Fig. 7 is the diagrammatic cross-section that illustrates according to a kind of light emitting diode of second preferred embodiment of the invention;
Fig. 8 is the diagrammatic cross-section that illustrates according to a kind of light emitting diode of third preferred embodiment of the invention;
Fig. 9 is the diagrammatic cross-section that illustrates according to a kind of light emitting diode of four preferred embodiment of the invention;
Figure 10 A is a kind of light source module diagrammatic cross-section that illustrates according to fifth preferred embodiment of the invention;
Figure 10 B is the light source module schematic top plan view that Figure 10 A is shown; And
Figure 11 is a kind of schematic top plan view that is used for the direct-light-type backlight of LCD that illustrates according to sixth preferred embodiment of the invention.
Wherein, description of reference numerals is as follows:
Prior art
100 reflex reflectors, 102 rims of a cup
110 packaging bodies, 112 far field patterns
116 mould grains
The present invention
200 circuit substrates, 212 far field patterns
214 crystal grain, 216 mould grains
220 irregular microstructure 240 light source modules
300 planes, 500 light emitting diodes
Embodiment
The present invention is a kind of light source module in this direction of inquiring into.In order to understand the present invention up hill and dale, detailed structural detail will be proposed in following description.Apparently, execution of the present invention does not limit the specific details that the technician was familiar with of light source module.On the other hand, well-known element is not described in the details, with the restriction of avoiding causing the present invention unnecessary.The preferred embodiments of the present invention can be described in detail as follows, yet except these were described in detail, the present invention can also implement in other embodiments widely, and scope of the present invention do not limited, and it is as the criterion with appending claims institute restricted portion.
Fig. 4 is the diagrammatic cross-section that illustrates according to a kind of light emitting diode of first preferred embodiment of the invention.See also Fig. 4, light emitting diode 500 has LED crystal particle 214.Above-mentioned light emitting diode 500 also can have mould grain 216, and above-mentioned LED crystal particle 214 is sealed.The method of sealing can be with shifting the mold pressing (transfer-molding) or the mode of injection-molding (inject-molding), above-mentioned mould grain 216 being sealed above-mentioned LED crystal particle 214.
The material of above-mentioned mould grain 216 can be the potpourri of epoxy resin, siloxane or epoxy resin and siloxane.
Above-mentioned light emitting diode 500 also can have circuit substrate 200.According to first preferred embodiment of the invention, above-mentioned light emitting diode 500 can have a plurality of.Above-mentioned a plurality of light emitting diodes 500 are arranged on the above-mentioned circuit substrate 200.
Above-mentioned a plurality of LED crystal particle 214 are electrically connected with circuit on the above-mentioned circuit substrate 200.
Above-mentioned circuit substrate 200 can be tellite, ceramic substrate, aluminium base, aluminium nitride substrate, or copper clad laminate.
According to first preferred embodiment of the invention, the light emitting diode of Fig. 4 can have far field pattern 212 (far-field pattern).Fig. 5 promptly illustrates the far field pattern synoptic diagram of the light emitting diode of Fig. 4.According to first preferred embodiment of the invention, the lighting angle of its light emitting diode 500 when 120 spend, still has the over half of front lighting intensity.In addition also can consult Fig. 6, it is that each lighting angle of light emitting diode of Fig. 5 and the coordinate diagram of intensity are shown.
Please consult Fig. 5 and Fig. 2 simultaneously, far field pattern 212 width of the light emitting diode 500 of first preferred embodiment of the invention are wider than the far field pattern 112 of the light emitting diode of Fig. 1.One of reason of far field pattern 212 wider width of the light emitting diode 500 of first preferred embodiment of the invention is that it does not have reflex reflector in order to optically focused.
See also Fig. 4, the surface of the mould grain 216 of light emitting diode 500 can be the plane, but other possibilities are also arranged.Fig. 7 illustrates according to second preferred embodiment of the invention, a kind of diagrammatic cross-section of light emitting diode.See also Fig. 7, the surface of above-mentioned mould grain also can be convex surface.
Fig. 8 is the diagrammatic cross-section that illustrates according to a kind of light emitting diode of third preferred embodiment of the invention.See also Fig. 8, the surface of above-mentioned mould grain also can be concave curved surface.
Fig. 9 is the diagrammatic cross-section that illustrates according to a kind of light emitting diode of four preferred embodiment of the invention.See also Fig. 9, the surface of above-mentioned mould grain 216 can have irregular microstructure 220.
Figure 10 A is a kind of light source module diagrammatic cross-section that illustrates according to fifth preferred embodiment of the invention.
Figure 10 B illustrates on the light source module of Figure 10 A to look synoptic diagram.See also Figure 10 A and Figure 10 B, above-mentioned light source module 240 has foregoing circuit substrate 200, and the described light emitting diode 500 of a plurality of first, second, third or the 4th preferred embodiment.Above-mentioned a plurality of light emitting diode 500 is arranged on the above-mentioned circuit substrate 200.Each light emitting diode 500 no-reflection device is in order to optically focused.The mould grain 216 of above-mentioned a plurality of light emitting diode 500 is electrically connected with circuit on the above-mentioned circuit substrate 200.
Figure 11 illustrates a kind of schematic top plan view that is used for the direct-light-type backlight of LCD according to sixth preferred embodiment of the invention.See also Figure 11, the above-mentioned direct-light-type backlight that is used for LCD can comprise the described light source module 240 of a plurality of the 5th embodiment.
One of advantage of the present invention's first to the 5th preferred embodiment is that they can reduce back light unit (BLU; Back Light Unit) thickness.Because, the light emitting diode of these preferred embodiments, if be used for the direct type backlight module of the LCD of the 6th embodiment, its light emitting diode is to the distance between the optical plate, compared to light emitting diode shown in Figure 1, the former distance can reduce.
In addition, above-mentioned light emitting diode does not have the rim of a cup of the degree of depth, if therefore use it for the light source module of the liquid crystal display backlight module of making the 6th embodiment, the thickness of its backlight module is easier to accomplish slimming.In addition, the light-emitting zone of light emitting diode of the present invention is concentrated, and for plane light source module, is easier to mixed light and becomes even planar light source.
Moreover, compared to using plastic leaded chip carrier (Plastic Leadframe Chip Carrier; PLCC) packaging body or the light emitting diode of bullet cut packaging body, another advantage of the present invention's first to the 5th preferred embodiment is that its mould grain can utilize the transfer mold pressing or the mode of injection-molding to seal, this kind mode of sealing has lower manufacturing cost.
Though the present invention discloses as above with preferred embodiment, so it is not in order to restriction the present invention.Various changes that those skilled in the art did or correction still belong to the spirit and scope of the present invention.Protection scope of the present invention is looked the scope that appending claims defines and is as the criterion.
Claims (15)
1. the light source module of a liquid crystal display backlight module comprises:
Circuit substrate; And
A plurality of light emitting diodes are arranged on this circuit substrate, and each light emitting diode has the far field pattern of broad, and each light emitting diode has a LED crystal particle and a mould grain is sealed this LED crystal particle;
Wherein above-mentioned a plurality of LED crystal particle are electrically connected with circuit on this circuit substrate.
2. the light source module of a liquid crystal display backlight module comprises:
Circuit substrate; And
A plurality of light emitting diodes are arranged on this circuit substrate, and each light emitting diode has a LED crystal particle and to shift the mold pressing or the mode of injection-molding a mould grain sealed this LED crystal particle;
Wherein above-mentioned a plurality of LED crystal particle are electrically connected with circuit on this circuit substrate.
3. the light source module of liquid crystal display backlight module as claimed in claim 2, wherein above-mentioned each light emitting diode has the far field pattern of broad.
4. the light source module of liquid crystal display backlight module as claimed in claim 1 or 2, the surface of wherein above-mentioned mould grain can be plane, convex surface or concave curved surface.
5. the light source module of liquid crystal display backlight module as claimed in claim 4, the surface of wherein above-mentioned mould grain has irregular microstructure.
6. the light source module of liquid crystal display backlight module as claimed in claim 4, the material of wherein above-mentioned mould grain can be the potpourri of epoxy resin, siloxane or epoxy resin and siloxane.
7. the light source module of liquid crystal display backlight module as claimed in claim 1 or 2, wherein the foregoing circuit substrate can be tellite, ceramic substrate, aluminium base, aluminium nitride substrate or copper clad laminate.
8. direct-light-type backlight that is used for LCD comprises:
A plurality of light source modules, each light source module has:
Circuit substrate; And
A plurality of light emitting diodes are arranged on this circuit substrate, and each light emitting diode no-reflection device is in order to optically focused;
Wherein above-mentioned a plurality of LED crystal particle are electrically connected with circuit on this circuit substrate;
Above-mentioned a plurality of light source module is arranged in a plane each other makes a plurality of light emitting diodes on the different light source modules be arranged in planar light source in staggered mode.
9. the direct-light-type backlight that is used for LCD as claimed in claim 8, wherein above-mentioned each light emitting diode have a LED crystal particle and a mould grain is sealed this LED crystal particle.
10. direct-light-type backlight that is used for LCD comprises:
A plurality of light source modules, each light source module has:
Circuit substrate; And
A plurality of light emitting diodes are arranged on this circuit substrate, and each light emitting diode has a LED crystal particle, and to shift the mold pressing or the mode of injection-molding a mould grain are sealed this LED crystal particle;
Wherein above-mentioned a plurality of LED crystal particle are electrically connected with circuit on this circuit substrate;
Above-mentioned a plurality of light source module is arranged in a plane each other makes a plurality of light emitting diodes on the different light source modules be arranged in planar light source in staggered mode.
11. the direct-light-type backlight that is used for LCD as claimed in claim 10, wherein above-mentioned each light emitting diode has the far field pattern of broad.
12. as claim 8 or the 10 described direct-light-type backlights that are used for LCD, the surface of wherein above-mentioned mould grain can be plane, convex surface or concave curved surface.
13. the direct-light-type backlight that is used for LCD as claimed in claim 12, the surface of wherein above-mentioned mould grain has irregular microstructure.
14. the direct-light-type backlight that is used for LCD as claimed in claim 12, the material of wherein above-mentioned mould grain can be the potpourri of epoxy resin, siloxane or epoxy resin and siloxane.
15. as claim 8 or the 10 described direct-light-type backlights that are used for LCD, wherein the foregoing circuit substrate can be tellite, ceramic substrate, aluminium base, aluminium nitride substrate or copper clad laminate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101270017A CN101609228A (en) | 2008-06-17 | 2008-06-17 | The light source module of liquid crystal display backlight module and direct-light-type backlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101270017A CN101609228A (en) | 2008-06-17 | 2008-06-17 | The light source module of liquid crystal display backlight module and direct-light-type backlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101609228A true CN101609228A (en) | 2009-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101270017A Pending CN101609228A (en) | 2008-06-17 | 2008-06-17 | The light source module of liquid crystal display backlight module and direct-light-type backlight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101609228A (en) |
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2008
- 2008-06-17 CN CNA2008101270017A patent/CN101609228A/en active Pending
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Owner name: ZHANJING TECHNOLOGY (SHENZHEN) CO., LTD. Free format text: FORMER OWNER: ADVANCED DEVELOPMENT PHOTOELECTRIC CO., LTD. Effective date: 20101117 Owner name: RONGCHUANG ENERGY TECHNOLOGY CO., LTD. |
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Free format text: CORRECT: ADDRESS; FROM: HSINCHU COUNTY, TAIWAN PROVINCE, CHINA TO: 518000 NO. 2, E. RING ROAD 2, INDUSTRY ZONE 10, YOUSONG, LONGHUA SUBDISTRICT OFFICE, BAO AN DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE |
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Effective date of registration: 20101117 Address after: 518000, Shenzhen, Guangdong, Baoan District province Longhua Street tenth Pine Industrial Zone, No. two, East Ring Road, No. 2 Applicant after: Zhanjing Technology (Shenzhen) Co., Ltd. Co-applicant after: Advanced Optoelectronic Technology Inc. Address before: Hsinchu County, Taiwan, China Applicant before: Advanced Development Photoelectric Co., Ltd. |
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| C12 | Rejection of a patent application after its publication | ||
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Open date: 20091223 |