CN203404678U - Backlight module and liquid crystal display device - Google Patents
Backlight module and liquid crystal display device Download PDFInfo
- Publication number
- CN203404678U CN203404678U CN201320504140.3U CN201320504140U CN203404678U CN 203404678 U CN203404678 U CN 203404678U CN 201320504140 U CN201320504140 U CN 201320504140U CN 203404678 U CN203404678 U CN 203404678U
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- backlight module
- plate
- reflector plate
- led lamp
- reflector
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Abstract
The utility model discloses a backlight module and a liquid crystal display device. The backlight module comprises a back board, a plurality of LED lamps and a reflector plate assembly, wherein the back board comprises a base plate and side plates extending outwards along the base plate, the LED lamps are arranged on the opposite side plates, the reflector plate assembly comprises a first reflector plate installed on the base plate, second reflector plates installed on the side plates and located below the LED lamps, and third reflector plates installed on the side plates and located above the LED lamps, and the first reflector plate and the second reflector plates are connected to form a semi-closed reflection surface located below the LED lamps. According to the backlight module, light sources emitted by the LED lamps can be uniformly distributed through the reflection effect of the reflector plate assembly, therefore, uniformity of the brightness of the backlight module is guaranteed, meanwhile the number of the LED lamps can be reduced compared with that of a directly downward type backlight module, and therefore production cost of the backlight module is saved.
Description
Technical field
The utility model relates to technical field of liquid crystal display, relates in particular to a kind of backlight module and liquid crystal indicator.
Background technology
At present the backlight module of television set industry mainly contains two kinds of straight-down negative and side entering types.
Down straight aphototropism mode set concrete structure is with reference to shown in Fig. 1.LED lamp 1 is evenly distributed on the backboard of backlight module, by being arranged at the light that the diffuser plate of LED lamp 1 top sends LED lamp 1, is spread in equably whole LCDs.The backlight module light of this structure is even.But down straight aphototropism mode set requires enough many of LED lamp 1 quantity, just can reach good brightness uniformity.Therefore, down straight aphototropism mode set holistic cost is higher.
The LED lamp of side entrance back module is arranged in the side of backboard, and light LED lamp being sent by LGP is transferred to the middle section of LCD screen, and the light that LED sends produces an area source by LGP.A number of the backlight module LED lamp used of this structure is less, but this light inlet mode can cause edge, the television set viewing area bright central authorities of picture dark.
Utility model content
Main purpose of the present utility model is to provide a kind of backlight module and liquid crystal indicator, is intended to guarantee reduce in the situation of backlight module brightness uniformity the usage quantity of LED lamp simultaneously.
In order to achieve the above object, the utility model proposes a kind of backlight module, comprise backboard, a plurality of LED lamps and reflector plate assembly, wherein, described backboard comprises base plate and along the outward extending side plate of described base plate, a plurality of described LED lamps are arranged on relative side plate, described reflector plate assembly comprises the first reflector plate that is installed on described base plate, be installed on described side plate and be positioned at the second reflector plate of described LED lamp below and be installed on described side plate and be positioned at the 3rd reflector plate of described LED lamp top, described the first reflector plate and described the second reflector plate are connected to form a semiclosed reflecting surface that is positioned at a plurality of described LED lamps below.
Preferably, described the 3rd reflector plate is fan-shaped laminated structure, described in each LED lamp top correspondence arrange one described in the 3rd reflector plate.
Preferably, the light-emitting area of described LED lamp is parallel towards the surface of described LED lamp one side with described the 3rd reflector plate.
Preferably, described in two, side plate is that two long sides that described base plate is relative stretch out and form, and described in two, between the madial wall of side plate and the upper surface of described base plate, all forms obtuse angle.
Preferably, be oppositely arranged two described in described LED lamp on side plate be crisscross arranged.
Preferably, described LED lamp is a lens LED lamp, and described LED lamp is pasted on described side plate by heat-conducting glue.
Preferably, on described the 3rd reflector plate, offer loophole.
Preferably, the arc reflection sheet that described the second reflector plate extends to the side near described the first reflector plate for the described side plate along being positioned at described LED lamp below, described the first reflector plate comprises a plurality of tapered protrusion sheets that are arranged side by side, and a plurality of tapered protrusion sheets connect successively.
Preferably, described the second reflector plate is provided with two, lays respectively on the two described side plates that are oppositely arranged, and the cross section of described tapered protrusion sheet is triangular in shape, between this leg-of-mutton dual-side and described base plate, all becomes obtuse angle.
The utility model further also proposes a kind of liquid crystal indicator, comprise backlight module, described backlight module comprises backboard, a plurality of LED lamps and reflector plate assembly, wherein, described backboard comprises base plate and along the outward extending side plate of described base plate, a plurality of described LED lamps are arranged on relative side plate, described reflector plate assembly comprises the first reflector plate that is installed on described base plate, be installed on described side plate and be positioned at the second reflector plate of described LED lamp below and be installed on described side plate and be positioned at the 3rd reflector plate of described LED lamp top, described the first reflector plate and described the second reflector plate are connected to form a semiclosed reflecting surface that is positioned at a plurality of described LED lamps below.
The backlight module the utility model proposes, by LED lamp is arranged on side plate, the light source homogenising of LED lamp being sent by the reflex of reflector plate assembly, thereby guarantee the uniformity of this backlight module brightness, therefore the usage quantity that meanwhile, can reduce LED lamp with respect to down straight aphototropism mode set has been saved the production cost of backlight module.In addition, this backlight module with respect to side entrance back module because not using LGP, therefore can save the cost of LGP.
Accompanying drawing explanation
Fig. 1 is the structural representation of down straight aphototropism mode set in prior art;
Fig. 2 is the structural representation of the utility model backlight module preferred embodiment;
Fig. 3 is the sectional structure schematic diagram of the A-A direction shown in Fig. 2.
The realization of the utility model object, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
The specific embodiment
Below in conjunction with drawings and the specific embodiments, with regard to the technical solution of the utility model, be described further.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
With reference to Fig. 2 and Fig. 3, Fig. 2 is the structural representation of the utility model backlight module preferred embodiment; Fig. 3 is the sectional structure schematic diagram of the A-A direction shown in Fig. 2.
In this preferred embodiment, backlight module comprises backboard 10, a plurality of LED lamps 20 and reflector plate assembly 30, wherein, backboard 10 comprises base plate 11 and along the outward extending side plate 12 of base plate 11, a plurality of LED lamps 20 are arranged on relative side plate 12, reflector plate assembly 30 comprises the first reflector plate 31 that is installed on base plate 11, be installed on side plate 12 and be positioned at the second reflector plate 32 of LED lamp 20 belows and be installed on side plate 12 and be positioned at the 3rd reflector plate 33 of LED lamp 20 tops, the first reflector plate 31 and the second reflector plate 32 are connected to form a semiclosed reflecting surface that is positioned at a plurality of LED lamps 20 belows.
In the present embodiment, down straight aphototropism mode set also comprises and is fixed on successively the upper surface of backboard 10 and the diffuser plate be arrangeding in parallel with base plate 11, brightening piece and glass (not shown), by glue frame, diffuser plate, brightening piece and glass is fixed on backboard 10.In the present embodiment, a plurality of LED lamps 20 intervals on same side plate 12 arrange.In the present embodiment, preferably the first reflector plate 31 and the 3rd reflector plate 33 are white reflection sheet, have white reflection sheet and silver-colored reflector plate in the second reflector plate 32, and wherein, white reflection sheet is mainly diffuse reflection, and silver-colored reflector plate is mainly mirror-reflection.The light that a plurality of LED lamps 20 of installing on side plate 12 send through the reflex of the first reflector plate 31, the second reflector plate 32 and the 3rd reflector plate 33 by divergence of beam, pass through again diffuser plate, brightening piece, spot light through reflection, diffusion and humidification to form uniform area source.Preferably, the top of close glue frame that LED lamp 20 is positioned at side plate 12 is to increase the light utilization of LED lamp 20.
The backlight module that the present embodiment proposes, by LED lamp 20 is arranged on side plate 12, the light source homogenising of LED lamp 20 being sent by the reflex of reflector plate assembly 30, thereby guarantee the uniformity of this backlight module brightness, therefore the usage quantity that meanwhile, can reduce LED lamp 20 with respect to down straight aphototropism mode set has been saved the production cost of backlight module.Especially, this backlight module with respect to side entrance back module because not using LGP, therefore can save the cost of LGP.
Particularly, in the present embodiment, the 3rd reflector plate 33 is fan-shaped laminated structure, and each LED lamp 20 top correspondence arranges one the 3rd reflector plate 33.
By the 3rd reflector plate 33 is to fan-shaped laminated structure, the light that LED lamp 20 is sent is reflected uniformly, thereby further improves the uniformity of this backlight module brightness.
Further, each LED lamp 20 equates apart from the distance of base plate 11, thereby further improves the uniformity of this backlight module brightness.
Further, on a plurality of the 3rd reflector plates 33, offer signal in loophole 331(Fig. 2 and draw a loophole 331 on the 3rd reflector plate 33).In the present embodiment, loophole 331 is in order suitably to weaken the light intensity at light source place, to promote on the whole brightness uniformity, and the aperture of loophole 331 arranges smallerly to prevent that a large amount of light that LED lamp 20 sends from penetrating through loophole.
By offering loophole 331 on the 3rd reflector plate 33, can weaken LED lamp 20 brightness around, thereby further improve the uniformity of this backlight module brightness.
Further, the light-emitting area of LED lamp 20 is parallel towards the surface of LED lamp 20 1 sides with the 3rd reflector plate 33.
The light-emitting area of LED lamp 20 and the 3rd reflector plate 33, when the lower surface of LED lamp 20 1 sides is parallel, can be optimized the light path that LED lamp 20 emits beam.The LED lamp 20 of traditional down straight aphototropism mode set is installed on base plate 11, and the light that LED lamp 20 sends is more at random.And in the present embodiment, light-emitting area by LED lamp 20 is parallel towards the lower surface of LED lamp 20 1 sides with the 3rd reflector plate 33, the 3rd reflector plate 33 be positioned at LED lamp 20 directly over, thereby can optimize light path, to reach the identical effect of secondary lens LED of using with traditional down straight aphototropism mode set.
Further, biside plate 12 forms for long limit, the relative both sides of base plate 11 stretches out, and between the upper surface of the madial wall of biside plate 12 and base plate 11, all becomes obtuse angle.
Be in the present embodiment, LED lamp 20 is installed on the side plate 12 on two long limits.In the present embodiment, backboard 10 can comprise a base plate 11 and four side plates 12, also can be set to a base plate 11 and two side plates 12.Wherein, the side plate 12 of mounted LED lamp 20 is connected with the long side of base plate 11, and the row LED lamp 20 that a plurality of LED lamps 20 form is distributed on two long sides of backboard 1010 rather than on short side.
Further, the LED20 lamp on the biside plate 12 being oppositely arranged is crisscross arranged, i.e. gap location setting between the two adjacent LED lamps 20 of LED lamp 20 on side plate 12 on another side plate 12.
By the LED20 lamp on the biside plate being oppositely arranged 12 is crisscross arranged, thereby can reduce the usage quantity of LED lamp 20 in this backlight module, and then save the production cost of this backlight module.
Further, LED lamp 20 is a lens LED lamp.In addition, in this backlight module, LED lamp 20 is pasted on side plate 12 by heat-conducting glue, is different from LED lamp 20 in prior art and is welded on pcb board.In the present embodiment, between a plurality of LED lamps 20, by wire, connect.
With respect to down straight aphototropism mode set, need use secondary lens LED lamp, in the present embodiment, LED lamp 20 is a lens LED lamp, and a lens LED lamp is with respect to the not only moulding process simplification of secondary lens LED lamp, and cost is also low simultaneously.
Further, the arc reflection sheet that the second reflector plate 32 extends to the side near the first reflector plate 31 for the side plate 12 along being positioned at the below of LED lamp 20, the first reflector plate 31 comprises a plurality of tapered protrusion sheets that are arranged side by side, a plurality of tapered protrusion sheets connect successively.In the present embodiment, the second reflector plate 32 is provided with two, lays respectively on two side plates that are oppositely arranged 12, and two tapered protrusion sheets of the upper and lower both sides of base plate 11 are connected with two arc reflection sheets respectively, thereby forms a semi-enclosed reflecting surface.
In the present embodiment, the cross section of tapered protrusion sheet is triangular in shape, between this leg-of-mutton dual-side and base plate 11, all becomes obtuse angle.Certainly in other variant embodiment, tapered protrusion sheet also can be arranged to other shape, and the utility model is not construed as limiting this.
The backlight module that the present embodiment proposes, the first reflector plate 31 comprises a plurality of tapered protrusion sheets that are arranged side by side, coordinate arc reflection sheet (i.e. the second reflector plate 32), thereby the light that LED lamp 20 is sent carries out the reflection of multiple directions, and then further improve the uniformity of this backlight module brightness.
The utility model further also proposes a kind of liquid crystal indicator.
In the present embodiment, liquid crystal indicator comprises backlight module, and the concrete structure of this backlight module, with reference to above-described embodiment, does not repeat them here.
The backlight module that the present embodiment proposes, by LED lamp is arranged on side plate, the light source homogenising of LED lamp being sent by the reflex of reflector plate assembly, thus the uniformity of this backlight module brightness guaranteed, with respect to down straight aphototropism mode set, can reduce the usage quantity of LED lamp.In addition, this backlight module with respect to side entrance back module because not using LGP, therefore can save the cost of LGP.
The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure transformation that utilizes the utility model description and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. a backlight module, it is characterized in that, comprise backboard, a plurality of LED lamps and reflector plate assembly, wherein, described backboard comprises base plate and along the outward extending side plate of described base plate, a plurality of described LED lamps are arranged on relative side plate, described reflector plate assembly comprises the first reflector plate that is installed on described base plate, be installed on described side plate and be positioned at the second reflector plate of described LED lamp below and be installed on described side plate and be positioned at the 3rd reflector plate of described LED lamp top, described the first reflector plate and described the second reflector plate are connected to form a semiclosed reflecting surface that is positioned at a plurality of described LED lamps below.
2. backlight module as claimed in claim 1, is characterized in that, described the 3rd reflector plate is fan-shaped laminated structure, described in each LED lamp top correspondence arrange one described in the 3rd reflector plate.
3. backlight module as claimed in claim 1, is characterized in that, the light-emitting area of described LED lamp is parallel towards the surface of described LED lamp one side with described the 3rd reflector plate.
4. backlight module as claimed in claim 1, is characterized in that, described in two, side plate is that two long sides that described base plate is relative stretch out and form, and described in two, between the madial wall of side plate and the upper surface of described base plate, all forms obtuse angle.
5. backlight module as claimed in claim 1, is characterized in that, be oppositely arranged two described in described LED lamp on side plate be crisscross arranged.
6. backlight module as claimed in claim 1, is characterized in that, described LED lamp is a lens LED lamp, and described LED lamp is pasted on described side plate by heat-conducting glue.
7. backlight module as claimed in claim 1, is characterized in that, on described the 3rd reflector plate, offers loophole.
8. backlight module as claimed in any of claims 1 to 7 in one of claims, it is characterized in that, the arc reflection sheet that described the second reflector plate extends to the side near described the first reflector plate for the described side plate along being positioned at described LED lamp below, described the first reflector plate comprises a plurality of tapered protrusion sheets that are arranged side by side, and a plurality of tapered protrusion sheets connect successively.
9. backlight module as claimed in claim 8, it is characterized in that, described the second reflector plate is provided with two, lays respectively on the two described side plates that are oppositely arranged, the cross section of described tapered protrusion sheet is triangular in shape, between this leg-of-mutton dual-side and described base plate, all becomes obtuse angle.
10. a liquid crystal indicator, is characterized in that, comprises backlight module as in one of claimed in any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320504140.3U CN203404678U (en) | 2013-08-16 | 2013-08-16 | Backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320504140.3U CN203404678U (en) | 2013-08-16 | 2013-08-16 | Backlight module and liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203404678U true CN203404678U (en) | 2014-01-22 |
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ID=49940614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320504140.3U Expired - Fee Related CN203404678U (en) | 2013-08-16 | 2013-08-16 | Backlight module and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203404678U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559668A (en) * | 2017-08-21 | 2018-01-09 | 深圳创维－Rgb电子有限公司 | A kind of down straight aphototropism mode set and display device |
| CN110998420A (en) * | 2017-05-23 | 2020-04-10 | Lg电子株式会社 | Backlight unit and display device including the same |
-
2013
- 2013-08-16 CN CN201320504140.3U patent/CN203404678U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110998420A (en) * | 2017-05-23 | 2020-04-10 | Lg电子株式会社 | Backlight unit and display device including the same |
| CN107559668A (en) * | 2017-08-21 | 2018-01-09 | 深圳创维－Rgb电子有限公司 | A kind of down straight aphototropism mode set 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: 20140122 |