CN102278677A - Backlight module - Google Patents
Backlight module Download PDFInfo
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- CN102278677A CN102278677A CN2011102538689A CN201110253868A CN102278677A CN 102278677 A CN102278677 A CN 102278677A CN 2011102538689 A CN2011102538689 A CN 2011102538689A CN 201110253868 A CN201110253868 A CN 201110253868A CN 102278677 A CN102278677 A CN 102278677A
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- lgp
- incidence surface
- circuit board
- module backlight
- slot
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- Planar Illumination Modules (AREA)
Abstract
The invention provides a backlight module which comprises a light guide plate, a circuit board, a plurality of light sources and a framework, wherein a plurality of protruded extension arms are connected with one side of the light incidence surface of the light guide plate; each protruded extension arm has a first end and a second end; the first end is connected with one side of the light incidence surface of the light guide plate and wider than the second end; a plurality of insertion slots corresponding to each protruded extension arm are formed on the body of the circuit board; each insertion slot is penetrated in a direction vertical to the light incidence surface of the light guide plate and wider than the first end; the plurality of light sources are arranged on one side, close to the light incidence surface of the light guide plate, of the circuit board and staggered with the plurality of insertion slots; the framework is provided with a plurality of grooves for accommodating the second ends; the plurality of protruded extension arms are correspondingly inserted into the plurality of insertion slots, so that the first ends are flatly attached to the insertion slots and the second ends penetrate through the insertion slots; meanwhile, the plurality of light sources are attached to the light incidence surface of the light guide plate; and when the light guide plate and the circuit board are accommodated in the framework, the second ends are accommodated in the grooves. By adopting the backlight module, the light sources can be precisely aligned with the light guide plate, so that the utilization rate of the light sources of the backlight module can be increased.
Description
Technical field
The present invention relates to a kind of module backlight, relate in particular to the module backlight of a kind of light source of contraposition better and LGP.
Background technology
Because LCD (Liquid Crystal Display, be abbreviated as LCD) have compact a, low power consumption, radiationless, flat square shows and the stable many-sided advantage such as do not glimmer of image, be applied in the various electronic products at present in large quantities, comprise personal digital assistant, mobile phone, digital camera and the digital camera etc. of using the small size panel, and the display of large size panel, notes type phone and TV etc.Along with the manufacturing technology of LCD is more and more ripe, LCD (LCD) has captured sizable a part of market, and progressively replaces cathode-ray tube display.But, because liquid crystal itself can be not luminous, thus regardless of different kinds of the panel of size all can only provide backlight by means of module backlight, show with image information liquid crystal panel.
Module backlight comprises light source, LGP, circuit board and framework, in the conventional art, have raised structures and light source alignment mark on the circuit board, have light source alignment mark and ear on the LGP, have groove that cooperates the circuit board raised structures and the groove that cooperates the LGP ear on the framework, when being assembled into module backlight, with light source alignment mark on the circuit board and the light source alignment mark contraposition on the LGP, make light source near LGP, and use the glue material to fix.LGP that will install with circuit board group and framework assembling again, raised structures on the circuit board and the ear on the LGP with respectively with framework on groove fit.By the module backlight that this kind mode is assembled into, light source is in the not effectively accurately contraposition of placement location of X-direction, and when confirming the position, artificial thick aligning accuracy is not high, influences optics and goes out light quality.Contraposition on Y direction, light source do not have accurately contraposition effectively yet, and when confirming the position, can influence source-coupling efficiency and optical characteristics near the position of LGP.Placement location on Z-direction can't confirm to answer the high and low position of contraposition to LGP.
In view of this, how designing a kind of novel module backlight, with contraposition light source and LGP better on X-direction, Y direction and Z-direction, is the problem that those skilled in the art need solution badly.
Summary of the invention
At the effective defective of contraposition of light source and LGP in the module backlight in the prior art, the invention provides a kind of module backlight.
According to the invention provides a kind of module backlight, comprising: LGP, circuit board, a plurality of light source and framework.A plurality of projection arms are connected in incidence surface one side of LGP, and each projection arm has first end and second end, and first end is connected in incidence surface one side of LGP and is wider than second end; Be provided with a plurality of slots corresponding to each projection arm on the circuit board body, each slot connects on the direction perpendicular to the LGP incidence surface, and is wider than first end; A plurality of light sources are arranged at a side of the incidence surface that is adjacent to LGP on the circuit board, and are staggered with a plurality of slots; Framework has a plurality of grooves with ccontaining second end.A plurality of projection arms are corresponding to insert a plurality of slots, makes first to hold level with both hands and be affixed on slot and second end passes slot, and a plurality of light sources fit in the incidence surface of LGP simultaneously, and when LGP and circuit board were placed in framework, second end was placed in the groove.
Preferably, second end is a strip cuboid.
Preferably, first end can be cube-shaped, rectangular-shaped, terrace with edge shape or bullet-shaped.
Preferably, slot all covers first end on perpendicular to the incidence surface direction of LGP.
Preferably, slot cover part second end more on perpendicular to the incidence surface direction of LGP.
Preferably, a plurality of light sources are light emitting diode.
Preferably, circuit board is a flexible PCB.
Preferably, the projection arm can be formed by the LGP extension.
Adopt the present invention can be on X-direction, Y direction and Z-direction contraposition light source and LGP better, to improve the utilization rate of die set light source backlight.
Description of drawings
The reader will become apparent various aspects of the present invention after the reference accompanying drawing has been read the specific embodiment of the present invention.Wherein,
Fig. 1 shows the structural representation according to LGP in the prior art module backlight;
Fig. 2 shows the structural representation according to circuit board in the prior art module backlight;
Fig. 3 shows the structural representation according to prior art module middle frame backlight;
Fig. 4 shows the structural representation according to prior art module backlight;
Fig. 5 shows the structural representation according to one embodiment of the present of invention module middle frame backlight;
Fig. 6 shows the structural representation according to LGP in the one embodiment of the invention module backlight;
Fig. 7 shows the structural representation according to circuit board in the one embodiment of the invention module backlight;
Fig. 8 shows the structural representation according to one embodiment of the invention module backlight;
Fig. 9 shows according to the LGP of further embodiment of this invention module backlight and structural representation after circuit board cooperates;
Figure 10 shows according to the LGP of yet another embodiment of the invention module backlight and structural representation after circuit board cooperates.
The specific embodiment
With reference to the accompanying drawings, the specific embodiment of the present invention is described in further detail.
Fig. 1 shows the structural representation according to LGP in the prior art module backlight.With reference to Fig. 1, LGP 110 with dual-side 112 that incidence surface 111 links to each other on a lug 1121 is respectively arranged.Fig. 2 shows the structural representation according to circuit board in the prior art module backlight.With reference to Fig. 2, circuit board 120 has body 121 and extension 122, has a plurality of raised structures 1211 on the body 121, and extension 122 is connected in wherein a raised structures 1211 and extends to incidence surface 111 1 sides away from LGP 110.A plurality of light sources 140 are arranged on the side of incidence surface 111 of the contiguous LGPs 110 of body 121 of circuit board 120, and are staggered with raised structures 1211.Is (Tu Qi Knot structure Should The exactly a led light source?)
Fig. 3 shows the structural representation according to prior art module middle frame backlight.With reference to Fig. 3, framework 130 has an accommodation space 131 to be used for holding LGP 110 and circuit board 120.Framework 130 and circuit board 120 corresponding sides 132 be provided with circuit board 120 on a plurality of raised structures 1211 corresponding a plurality of first grooves 1321, be provided with the opening 1322 that matches with extension 122 on the circuit board 120 on the side 132 of framework 130 simultaneously.The dual-side 133 that links to each other with side 132 is provided with and two lugs, 1121 corresponding second grooves 1331 that are positioned on LGP 110 dual-sides 112.
Fig. 4 shows the structural representation according to prior art module backlight.In conjunction with reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4.In the module 10 backlight, the light source 140 on LGP 110 and the circuit board 120 can only carry out contraposition by being positioned at alignment mark on LGP 110 and the circuit board 120 (indicating), and needs other use glue material (sign) fixing.In the method, light source 140 is at the placement location of X-direction, accurately contraposition effectively, and when confirming alignment mark, artificial thick aligning accuracy is not high, influences optics and goes out light quality.Light source 140 is accurately contraposition on Y direction, influences light source 140 coupling efficiencies and optical characteristics.Light source 140 on Z-direction equally can not with the accurate contraposition of the height of LGP 110.After will assembling through the LGP after the contraposition 110 and circuit board 120 and framework 130, two lugs 1121 on LGP 110 dual-sides 112 are sticked in second groove 1331 on framework 130 dual-sides 133.Leaded light raised structures 1211 on circuit board 120 bodies 121 engages mutually with first groove 1321 on framework 130 sides 132, and the extension 122 of circuit board 120 is placed in opening 1322 places on framework 130 sides 132 simultaneously.Though the raised structures 1211 of circuit board 120 can play certain fixation with after first groove 1321 of framework 130 engages, and can not closely cooperate.
Fig. 5 shows the structural representation according to LGP in the present invention's module backlight.Fig. 6 shows the structural representation according to circuit board in the present invention's module backlight.Fig. 7 shows the structural representation according to the present invention's module middle frame backlight.Fig. 8 shows the structural representation according to the present invention's module backlight.In conjunction with reference to Fig. 5, Fig. 6, Fig. 7 and Fig. 8, module 20 backlight comprises LGP 210, flexible PCB 220, framework 230 and a plurality of light source 240.Wherein, a plurality of projection arms 211 are connected in incidence surface 212 1 sides of LGP 210, and in the present embodiment, projection arm 211 is extended to form to incidence surface 212 outsides by LGP 210.Each projection arm 211 has first end 2111 and second end, 2112, the second ends 2112 are the strip cuboid.In the present embodiment, first end 2111 is cube-shaped, and in a further embodiment, first end 2111 can also be rectangular-shaped, truncated rectangular pyramids shape or bullet-shaped.First end 2111 is connected in incidence surface 212 1 sides of LGP 210 and is wider than second end 2112.
Continue combination with reference to Fig. 5, Fig. 6, Fig. 7 and Fig. 8, be provided with a plurality of slots 2211 corresponding to each projection arm 211 on flexible PCB 220 bodies 221, each slot 2211 connects on the direction perpendicular to LGP 210 incidence surfaces 212, and is wider than first end 2111 of projection arm 211.Second end 2112 of projection arm 211 can pass slot 2211 like this, and in the present embodiment, on incidence surface 211 directions perpendicular to LGP 210, slot 2211 covers first end 2111 fully, and second end 2112 of projection arm 211 passes completely through slot 2211.Flexible PCB 220 has by body 221 to the extension 222 that extends away from incidence surface 212 directions of LGP 210.Light source 240 is a light emitting diode, and a plurality of light emitting diodes 240 are arranged at a side of the incidence surface 212 that is adjacent to LGP 210 on the circuit board 220, and is staggered with a plurality of slots 2211.When projection arm 211 inserted slot 2211, first end 2111 fitted tightly to play the effect of lightguide plate fixing 210 and flexible PCB 220 with slot 2211.Simultaneously, light emitting diode 240 is close to the incidence surface 212 of LGP 210, and on X-axis, Y direction with LGP 210 accurate contrapositions, in addition, on Z-direction, light emitting diode 240 can with the accurate contraposition of the height of LGP 210.Therefore can improve the utilization rate of module 20 light sources backlight.
Has an accommodation space 231 on the framework 230 to hold the LGP 210 and flexible PCB 220 after assembling.Incidence surface 212 corresponding sides 232 of framework 230 and LGP 210 are provided with second end, the 2112 corresponding grooves 2321 with the projection arm 211 of LGP 210, groove 2321 and second end, 2112 matching design, part second end 2112 that promptly passes the slot 2211 of flexible PCB 220 and expose tightly is sticked in the groove 2321, like this can lightguide plate fixing 210 with flexible PCB 220 on framework 230.Also have on the side 232 of framework 230 one with the extension 222 corresponding openings 2322 of flexible PCB 220, to hold extension 222.
Fig. 9 shows according to the LGP of further embodiment of this invention module backlight and structural representation after circuit board cooperates.With reference to Fig. 9, in the present embodiment, first end 2111 of the projection arm of LGP 210 (not indicating) is a bullet-shaped, covers first end 2111 fully on incidence surface (the not indicating) direction perpendicular to LGP 210, and covers the part of second end 2112.When the projection arm inserted slot 2211, the part of first end 2111 and second end 2112 fitted tightly in slot 2211, played the effect of lightguide plate fixing 210 and flexible PCB (indicating) equally.Simultaneously, light emitting diode 240 is close to the incidence surface of LGP 210, and on X-axis, Y direction with LGP 210 accurate contrapositions, in addition, on Z-direction, light emitting diode 240 can with the accurate contraposition of the height of LGP 210.
Figure 10 shows according to the LGP of yet another embodiment of the invention module backlight and structural representation after circuit board cooperates.With reference to Figure 10, in the present embodiment, first end 2111 of the projection arm of LGP 210 (not indicating) is rectangular-shaped, part in a plurality of slots 2211 of flexible PCB (not indicating) covers first end 2111 fully on incidence surface (the not indicating) direction perpendicular to LGP 210, and covers the part of second end 2112.Another part in a plurality of slots 2211 of flexible PCB only covers first end 2111 fully on perpendicular to the incidence surface direction of LGP 210, and second end 2112 all passes slot 2211.When the projection arm inserted slot 2211, the part of first end 2111 and second end 2112 fitted tightly in slot 2211, played the effect of lightguide plate fixing 210 and flexible PCB equally.Simultaneously, light emitting diode 240 is close to the incidence surface of LGP 210, and on X-axis, Y direction with LGP 210 accurate contrapositions, in addition, on Z-direction, light emitting diode 240 can with the accurate contraposition of the height of LGP 210.
Adopt the present invention, lightguide plate fixing and circuit board better, and can make backlight and LGP accurate location better, with the utilization rate of lifting backlight.
Above, describe the specific embodiment of the present invention with reference to the accompanying drawings.But those skilled in the art can understand, and under situation without departing from the spirit and scope of the present invention, can also do various changes and replacement to the specific embodiment of the present invention.These changes and replacement all drop in claims restricted portion of the present invention.
Claims (8)
1. a module backlight is characterized in that, comprising:
LGP, a plurality of projection arms are connected in incidence surface one side of described LGP, and each described projection arm has first end and second end, and incidence surface one side and described first end that described first end is connected in described LGP are wider than described second end;
Circuit board is provided with a plurality of slots corresponding to each described projection arm on the described circuit board body, and each described slot connects on the direction perpendicular to described LGP incidence surface, and described slot is wider than described first end;
A plurality of light sources are arranged at a side of the incidence surface that is adjacent to described LGP on the described circuit board, and described a plurality of light source and described a plurality of slot are staggered; And
Framework has a plurality of grooves with ccontaining described second end,
Wherein, the described a plurality of slots of the corresponding insertion of described a plurality of projection arm, make described first to hold level with both hands and be affixed on described slot and described second end passes described slot, described a plurality of light sources fit in the incidence surface of described LGP simultaneously, when described LGP and described circuit board were placed in described framework, described second end was placed in the described groove.
2. module backlight as claimed in claim 1 is characterized in that, described second end is a strip cuboid.
3. module backlight as claimed in claim 1 is characterized in that, described first end can be cube-shaped, rectangular-shaped, terrace with edge shape or bullet-shaped.
4. as the described module backlight of the arbitrary claim of claim 1 to 3, it is characterized in that, described first end is all covered at the above slot of incidence surface direction perpendicular to described LGP.
5. module backlight as claimed in claim 4 is characterized in that, perpendicular to the above slot of incidence surface direction of described LGP described second end in cover part more.
6. module backlight as claimed in claim 1 is characterized in that, described a plurality of light sources are light emitting diode.
7. module backlight as claimed in claim 1 is characterized in that, described circuit board is a flexible PCB.
8. module backlight as claimed in claim 1 is characterized in that, described projection arm can be formed by described LGP extension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102538689A CN102278677A (en) | 2011-08-24 | 2011-08-24 | Backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102538689A CN102278677A (en) | 2011-08-24 | 2011-08-24 | Backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102278677A true CN102278677A (en) | 2011-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102538689A Pending CN102278677A (en) | 2011-08-24 | 2011-08-24 | Backlight module |
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| Country | Link |
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| CN (1) | CN102278677A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019200868A1 (en) * | 2018-04-20 | 2019-10-24 | 京东方科技集团股份有限公司 | Backlight module and display device |
-
2011
- 2011-08-24 CN CN2011102538689A patent/CN102278677A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019200868A1 (en) * | 2018-04-20 | 2019-10-24 | 京东方科技集团股份有限公司 | Backlight module and display device |
| US10928663B2 (en) | 2018-04-20 | 2021-02-23 | Boe Technology Group Co., Ltd. | Backlight module and display device |
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| C06 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111214 |