CN202733684U - Backlight module - Google Patents
Backlight module Download PDFInfo
- Publication number
- CN202733684U CN202733684U CN2012204313321U CN201220431332U CN202733684U CN 202733684 U CN202733684 U CN 202733684U CN 2012204313321 U CN2012204313321 U CN 2012204313321U CN 201220431332 U CN201220431332 U CN 201220431332U CN 202733684 U CN202733684 U CN 202733684U
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- Prior art keywords
- light source
- backlight module
- circuit board
- printed circuit
- lgp
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Abstract
The utility model relates to a backlight module which comprises a light source, a light guide panel and a printed circuit board, wherein the light guide panel is arranged close to the light source and used for guiding a light beam emitted by the light source; the light guide panel is provided with a light outlet surface and a bottom surface opposite to the light outlet surface; the printed circuit board carries and is electrically connected with the light source; the printed circuit board is distributed at one bottom side of the light guide panel in an extension manner; and the printed circuit board comprises a solid reflection material to reflect light emitted from the bottom surface of the light guide panel back to the light guide panel. Thus, the problem that the light guide panel, the light source and a reflection plate are less prone to precise alignment in the assembling process in the existing design is avoided, the assembling gap between the light guide panel and the light source can be easily maintained, and the assembling procedure, working time and manufacturing cost are reduced. Besides, the solid reflection material can be arranged in the printed circuit board (e.g. in a gluing manner), so that the manufacturing process can be simplified, and the manufacturing cost can be reduced.
Description
Technical field
The utility model is about a kind of backlight module.
Background technology
Fig. 4 is the schematic diagram of an existing backlight module.As shown in Figure 4, backlight module 100 comprises a backboard 110 and spacing a LGP 102, an anti-dazzling screen 103, a light source 104, a printed circuit board (PCB) 106 and a reflector plate 108 in backboard 110.LGP 102 is arranged on contiguous light source 104 positions and the light beam in order to guide light source 104 to send, and LGP 102 has an exiting surface 102a and a bottom surface 102b who is oppositely arranged, reach with exiting surface 102a and press from both sides an incidence surface 102c of an angle, anti-dazzling screen 103 is fixed on the exiting surface 102a place of contiguous light source 104 positions.Printed circuit board (PCB) 106 carrying also is electrically connected light source 104, and reflector plate 108 will return LGP 102 by the light reflection of the bottom surface 102b outgoing of LGP 102.Yet above-mentioned design is independent the setting because of reflector plate 108, thereby light source 104 and reflector plate 108 must have separately contraposition reference during assembling, and easily affects optical appearance because of the contraposition inaccuracy, and is difficult for keeping the assembly clearance between LGP 102 and the light source 104.
TaiWan, China patent announcement TWM288694 discloses a kind of structure-improved of LCD MODULE, comprises liquid crystal panel, brightness enhancement film, diffusion sheet, LGP and printed circuit board (PCB).Printed circuit board (PCB) is fixed on the dorsal part of LGP and the reflective and material that adds lustre to replaces reflector plate in the side coating of contiguous LGP.United States Patent (USP) notification number US6969189 discloses a kind of backlight module, wherein plates reflective material on the LED circuitboard with the cremasteric reflex effect, and improves outgoing light homogeneity at reflective material coating one transparent material.
The utility model content
The utility model provides a kind of backlight module, this kind backlight module can be when element be assembled exactitude position and have fabrication schedule and the lower manufacturing cost of simplification.
Other purpose of the present utility model and advantage can be further understood from the disclosed technical characterictic of the utility model.For realizing one of above-mentioned or partly or entirely purpose or other purpose, an embodiment of the present utility model provides a kind of backlight module, comprises a light source, a LGP and a printed circuit board (PCB).LGP is arranged on place, adjacent light source position and the light beam in order to guide light source to send, and LGP has a bottom surface of an exiting surface and the setting of relative exiting surface.Printed circuit board (PCB) carrying also is electrically connected light source, and printed circuit board (PCB) extends a bottom side that is distributed in LGP, and printed circuit board (PCB) comprises a solid reflecting material returning LGP by the light reflection of the bottom surface outgoing of LGP.
Another embodiment of the present utility model provides a kind of backlight module, comprises a LGP, one first light source, a secondary light source and a printed circuit board (PCB).LGP has an exiting surface and a bottom surface that is oppositely arranged, and one first incidence surface that is oppositely arranged and one second incidence surface, and the first incidence surface and the second incidence surface press from both sides an angle with exiting surface respectively.The first light source is arranged on contiguous the first incidence surface position, and secondary light source is arranged on contiguous the second incidence surface position, and a printed circuit board (PCB) carries and be electrically connected the first light source and secondary light source.Printed circuit board (PCB) extends the bottom side be distributed in LGP, and printed circuit board (PCB) comprises a solid reflecting material returning LGP by the light reflection of the bottom surface outgoing of LGP.
In one embodiment, printed circuit board (PCB) is a flexible printed wiring board, and light source comprises light-emitting diode component.
In one embodiment, one first section that printed circuit board (PCB) comprises more contiguous light source reaches than one second section away from light source, and the structure of the first section is different from the structure of the second section.The solid reflecting material that the first section can comprise a base material, be arranged on the conducting wire layer on the base material and cover the conducting wire layer, the solid reflecting material is in order to the light of reflection by the bottom surface outgoing of LGP, and the second section comprises base material and is attached to the solid reflecting material on the base material and do not comprise the conducting wire layer.Colloid can be in order to being fixed on the conducting wire layer on the base material, and the solid reflecting material is fixed on the layer of conducting wire.
In one embodiment, the material of conducting wire layer comprises Copper Foil, and the solid reflecting material comprises a white reflection material.
In sum, the backlight module of embodiment of the present utility model has following one of them advantage at least:
Design by above-described embodiment, be distributed in a bottom side of LGP and have a solid reflecting material so that end reflector plate function to be provided because printed circuit board (PCB) extends, so an end reflector plate independently must be set in addition, can avoid when assembling, being difficult between LGP, light source and the reflector plate in the existing design problem of exactitude position, and be easy to keep the assembly clearance between LGP and the light source, and reduce assembling procedure, man-hour and manufacturing expense.In addition, the solid reflecting material can utilize for example gluing mode to be arranged in the printed circuit board (PCB), therefore can simplify manufacture process and reduce manufacturing expense.
Other purpose of the present utility model and advantage can be further understood from the disclosed technical characterictic of the utility model.
Description of drawings
For above and other objects of the present invention, feature and advantage can be become apparent, embodiment cited below particularly also cooperates accompanying drawing, is described in detail below.
Fig. 1 is the schematic diagram according to the backlight module of the utility model one embodiment.
Fig. 2 is the schematic diagram according to the printed circuit board (PCB) of the utility model one embodiment.
Fig. 3 is the schematic diagram according to the backlight module of another embodiment of the utility model.
Fig. 4 is the schematic diagram of backlight module in the prior art.
The specific embodiment
About aforementioned and other technology contents, characteristics and effect of the present utility model, in the detailed description of following cooperation embodiment with reference to the accompanying drawings, can clearly present.The direction term of mentioning in following examples such as: upper and lower, left and right, front or rear etc., only is direction with reference to the accompanying drawings.Therefore, the direction term of use is to illustrate not to be to limit the utility model.
Fig. 1 is the backlight module schematic diagram according to the utility model one embodiment.As shown in Figure 1, backlight module 10 comprises a backboard 18 and spacing a LGP 12, a light source reflector plate 13, a light source 14 and a printed circuit board (PCB) 16 in backboard 18.LGP 12 is arranged on contiguous light source 14 positions and is used for the light beam that guiding light source 14 sends, and LGP 12 has an exiting surface 12a and a bottom surface 12b who is oppositely arranged, reach with exiting surface 12a and press from both sides an incidence surface 12c of an angle, light source reflector plate 13 is fixed on the exiting surface 12a place of adjacent light source position.One optical diaphragm group 20 can be stacked in the exiting surface 12a of LGP 12 upward so that blast and light diffusion effect to be provided.Printed circuit board (PCB) 16 carryings also are electrically connected light source 14, in the present embodiment, printed circuit board (PCB) 16 extends a bottom side that is distributed in LGP 12 and the light reflecting effect can be provided, and therefore by the light of the bottom surface 12b outgoing of LGP 12, the printed circuit board (PCB) 16 that can be extended setting is reflected back LGP 12.In one embodiment, the first section 16a that printed circuit board (PCB) 16 has more contiguous light source 14 reaches than the second section 16b away from light source 14, and the structure of the first section 16a is different from the second section 16b.As shown in Figure 2, the first section 16a of contiguous light source 14 comprises a base material 22, is arranged on a conducting wire layer 24 and a solid reflecting material 26 on the base material 22, and solid reflecting material 26 can cover conducting wire layer 24 and reflection by the light of the bottom surface 12b outgoing of LGP 12.In one embodiment, the material of conducting wire layer 24 comprises Copper Foil, and solid reflecting material 26 comprises but is not defined as a white reflection material.The second section 16b is not because comprising conducting wire layer 24, so solid reflecting material 26 can directly be attached on the base material 22.In addition, can utilize colloid 32 that conducting wire layer 24 is fixed on the base material 22, and solid reflecting material 26 is fixed on the conducting wire layer 24.In one embodiment, printed circuit board (PCB) 16 for example can be a flexible printed wiring board, and light source 14 for example comprises light-emitting diode component.
As shown in Figure 3, in another embodiment, the LGP 42 of backlight module 40 has one first incidence surface 421 and one second incidence surface 422 that is oppositely arranged, and the first incidence surface 421 and the second incidence surface 422 respectively with an exiting surface 423 folders one angle.One light source 14a is arranged on contiguous the first incidence surface 421 positions, and a light source 14b is arranged on contiguous the second incidence surface 422 positions.46 carryings of one printed circuit board (PCB) and electrical connection light source 14a, 14b and extension are distributed in a bottom side of LGP 42.The light that light source 14a and light source 14b send can enter LGP 42 by the first incidence surface 421 and the second incidence surface 422 respectively, and extends the printed circuit board (PCB) 46 that arranges and the light reflection of LGP 42 downward outgoing can be returned LGP 42 equally.
In sum, the backlight module of embodiment of the present utility model has following one of them advantage at least:
Design by above-described embodiment, be distributed in a bottom side of LGP and have a solid reflecting material so that end reflector plate function to be provided because printed circuit board (PCB) extends, so an end reflector plate independently must be set in addition, and can avoid when assembling, being difficult between LGP, light source and the reflector plate in the existing design problem of exactitude position, and be easy to keep the assembly clearance between LGP and the light source, and reduce assembling procedure, man-hour and manufacturing expense.In addition, the solid reflecting material can utilize for example gluing mode to be arranged in the printed circuit board (PCB), therefore can simplify manufacture process and reduce manufacturing expense.
The above, it only is preferred embodiment of the present utility model, when not limiting the scope that the utility model is implemented with this, the simple equivalence of namely generally doing according to the utility model claim and utility model description changes and modifies, and all still belongs in the scope that the utility model patent contains.Arbitrary embodiment of the present utility model or claim must not reached the disclosed whole purposes of the utility model or advantage or characteristics in addition.In addition, summary part and title only are auxiliary patent document searches, are not to limit interest field of the present utility model.In addition, the terms such as " first " mentioned in this specification or claims, " second " are only in order to the title of naming element (element) or distinguish different embodiment or scope, and are not the quantitative upper limit of limiting element or lower limit.
The reference number table
10,40 backlight modules
12,42 LGPs
14,14a, 14b light source
12a, 423 exiting surfaces
The 12b bottom surface
12c, 421,422 incidence surfaces
13 light source reflector plates
16,46 printed circuit board (PCB)s
16a the first section
16b the second section
18 backboards
20 optical diaphragm group
22 base materials
24 conducting wire layers
26 solid reflecting materials
32 colloids
100 optical modules
102 LGPs
The 102a exiting surface
The 102b bottom surface
The 102c incidence surface
103 anti-dazzling screens
104 light sources
106 printed circuit board (PCB)s
108 reflector plates
110 backboards
Claims (14)
1. backlight module comprises:
One light source;
One LGP is arranged on contiguous described light source position place and for a light beam that guides described light source to send, wherein said LGP has a bottom surface of an exiting surface and the setting of relatively described exiting surface; And
One printed circuit board (PCB), carrying also is electrically connected described light source, described printed circuit board (PCB) extends a bottom side that is distributed in described LGP, and described printed circuit board (PCB) comprises a solid reflecting material returning described LGP by the light reflection of the described bottom surface outgoing of described LGP.
2. backlight module according to claim 1 is characterized in that, described printed circuit board (PCB) is a flexible printed wiring board, and described light source comprises light-emitting diode component.
3. backlight module according to claim 1, it is characterized in that, one first section that described printed circuit board (PCB) comprises contiguous described light source reaches than one second section away from described light source, and the structure of described the first section is different from the structure of described the second section.
4. backlight module according to claim 3 is characterized in that, described the first section comprises:
One base material;
One conducting wire layer is arranged on the described base material; And
One solid reflecting material covers described conducting wire layer and in order to the light of reflection by the described bottom surface outgoing of described LGP.
5. backlight module according to claim 4 is characterized in that, described the second section comprises described base material and is attached to the described solid reflecting material on the described base material and do not comprise described conducting wire layer.
6. backlight module according to claim 4 is characterized in that, described backlight module also comprises:
Colloid in order to described conducting wire layer is fixed on the described base material, and is fixed on described solid reflecting material on the layer of described conducting wire.
7. backlight module according to claim 4 is characterized in that, the material of described conducting wire layer comprises Copper Foil, and described solid reflecting material comprises a white reflection material.
8. backlight module comprises:
One LGP has the exiting surface and the bottom surface that are oppositely arranged, and one first incidence surface that is oppositely arranged and one second incidence surface, and described the first incidence surface and described the second incidence surface press from both sides an angle with described exiting surface respectively;
One first light source is arranged on contiguous described the first incidence surface position;
One secondary light source is arranged on contiguous described the second incidence surface position; And
One printed circuit board (PCB), carrying also is electrically connected described the first light source and described secondary light source, wherein said printed circuit board (PCB) extends a bottom side that is distributed in described LGP, and described printed circuit board (PCB) comprises a solid reflecting material returning described LGP by the light reflection of the described bottom surface outgoing of described LGP.
9. backlight module according to claim 8 is characterized in that, described printed circuit board (PCB) is a flexible printed wiring board, and described light source comprises light-emitting diode component.
10. backlight module according to claim 8, it is characterized in that, one first section that described printed circuit board (PCB) comprises contiguous described light source reaches than one second section away from described light source, and the structure of described the first section is different from the structure of described the second section.
11. backlight module according to claim 10 is characterized in that, described the first section comprises:
One base material;
One conducting wire layer is arranged on the described base material; And
One solid reflecting material covers described conducting wire layer and is used for reflection by the light of the described bottom surface outgoing of described LGP.
12. backlight module according to claim 11 is characterized in that, described the second section comprises described base material and is attached to the described solid reflecting material on the described base material and does not comprise described conducting wire layer.
13. backlight module according to claim 11 is characterized in that, described backlight module also comprises:
Colloid in order to described conducting wire layer is fixed on the described base material, and is fixed on described solid reflecting material on the layer of described conducting wire.
14. backlight module according to claim 11 is characterized in that, the material of described conducting wire layer comprises Copper Foil, and described solid reflecting material comprises a white reflection material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204313321U CN202733684U (en) | 2012-08-22 | 2012-08-22 | Backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204313321U CN202733684U (en) | 2012-08-22 | 2012-08-22 | Backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202733684U true CN202733684U (en) | 2013-02-13 |
Family
ID=47659379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204313321U Expired - Fee Related CN202733684U (en) | 2012-08-22 | 2012-08-22 | Backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202733684U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115113433A (en) * | 2021-03-17 | 2022-09-27 | 苏州璨鸿光电有限公司 | Backlight module and display device |
-
2012
- 2012-08-22 CN CN2012204313321U patent/CN202733684U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115113433A (en) * | 2021-03-17 | 2022-09-27 | 苏州璨鸿光电有限公司 | Backlight module and display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20160822 |