CN204164828U - A kind of backlight module for cambered surface TV - Google Patents
A kind of backlight module for cambered surface TV Download PDFInfo
- Publication number
- CN204164828U CN204164828U CN201420607634.9U CN201420607634U CN204164828U CN 204164828 U CN204164828 U CN 204164828U CN 201420607634 U CN201420607634 U CN 201420607634U CN 204164828 U CN204164828 U CN 204164828U
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- China
- Prior art keywords
- backboard
- cambered surface
- backlight module
- light source
- pcb substrate
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Abstract
The utility model discloses a kind of backlight module for cambered surface TV, comprise backboard, reflector plate, diffuser plate and multiple support column, backboard is provided with multiple LED lamp bar, and LED lamp bar comprises PCB substrate and is arranged on the multiple light source assemblies in PCB substrate; Reflector plate to be arranged in PCB substrate and to offer through hole in the position of corresponding light source assembly, and diffuser plate to be arranged on above reflector plate by support column and to form a mixed light space with reflector plate, and diffuser plate is also disposed with prismatic lens and diffusion sheet.A kind of backlight module for cambered surface TV of the present utility model, can meet the backlight demand of two cambered surface TV, improve the brightness uniformity of backlight module, and structure is simple, production cost is low, can be widely used in field of backlights.
Description
Technical field
The utility model relates to LED-backlit field, particularly relates to a kind of backlight module for cambered surface TV.
Background technology
At present LED television on the market, be take LED as the LCD LCD TV of backlight in fact mostly, at present, the backlight module of this LED television is generally divided into side entering type and straight-down negative two kinds.The traditional structure of down straight aphototropism mode set is, by LED light source arrayed in flat back plate, the all LED light sources of this structure are all positioned at same plane, the closer to the LED light source at backlight module edge, the angle of its normal and human eye sight will be larger, and LED light source transmits luminous energy at most on its normal, toward both sides along with the increase luminous energy of angular deflection reduces gradually, therefore cause human eye will be more poorer toward edge to the perception of the brightness uniformity of backlight module.And at present the development trend of LED television is toward cambered surfaceization development, its liquid crystal panel be cambered surface, so more meets the visual demand of human eye, can reduce even elimination television image in principle and enter human eye and the distortion that produces, reach better result of broadcast.But, because the backlight module that a lot of LED cambered surface TV adopts or the down straight aphototropism mode set of traditional plane, the light emission direction of LED light source and liquid crystal panel out of plumb, the light energy causing liquid crystal panel to penetrate reduces, and the light emission direction of the LED light source of diverse location is all different with the angle of liquid crystal panel in backlight module, also liquid crystal panel light penetration rate is everywhere caused to differ, its brightness uniformity is made to be deteriorated further, cause the result of broadcast of LED cambered surface TV not as good as flat-surface television, limit the development and application of LED cambered surface TV.And at present to this situation, the solution of employing is the quantity increasing LED light source, this, by the increase of the production cost and energy consumption that cause backlight module, also limit the development and application of LED cambered surface TV equally.
Utility model content
In order to solve above-mentioned technical problem, the purpose of this utility model is to provide a kind of backlight module for cambered surface TV.
The utility model solves the technical scheme that its technical problem adopts:
For a backlight module for cambered surface TV, comprise backboard, reflector plate, diffuser plate and multiple support column, described backboard is provided with multiple LED lamp bar, and described LED lamp bar comprises PCB substrate and is arranged on the multiple light source assemblies in PCB substrate;
Described reflector plate to be arranged in PCB substrate and to offer through hole in the position of corresponding light source assembly, and described diffuser plate to be arranged on above reflector plate by support column and to form a mixed light space with reflector plate, and described diffuser plate is also disposed with prismatic lens and diffusion sheet.
Further, described backboard is flat back plate or single cambered surface backboard, and described PCB substrate is mounted obliquely within backboard.
Further, described backboard is two cambered surface backboards, and described PCB substrate is close to backboard and is installed or be mounted obliquely within backboard.
Further, the angle theta 1 of the normal of described light source assembly and the long limit middle vertical plane of backboard is 0 ° ~ 30 °, and the angle theta 2 of the normal of described light source assembly and the minor face middle vertical plane of backboard is 0 ° ~ 25 °.
Further, described light source assembly comprises the LED light source be arranged in PCB substrate and the LED lens be vertically set on above LED light source.
Further, the exiting surface of described LED lens is provided with the lens microstructure for diffusing light that multiple central shaft about LED lens distributes axisymmetricly.
Further, the shape of described lens microstructure is triangular prism, convex hemisphere, recessed hemisphere or groove.
Further, described angle theta 1 backboard transversely comprise that 2n+1 is symmetric relative to the long limit middle vertical plane of backboard be in different angles scope and there is the angle constant interval of different variation tendency, angle theta 1 seamlessly transits at the boundary of adjacent angular constant interval, and wherein n is natural number.
Further, what described angle theta 2 comprised in the longitudinal direction of backboard that 2n+1 is symmetric relative to the minor face middle vertical plane of backboard is in different angles scope and has the angle constant interval of different variation tendency, and angle theta 2 seamlessly transits at the boundary of adjacent angular constant interval.
Further, described 2n+1 angle constant interval has different projected lengths on backboard, and has a projected length to be not less than the half of its place length of side.
The beneficial effects of the utility model are: a kind of backlight module for cambered surface TV of the present utility model, comprise backboard, reflector plate, diffuser plate and multiple support column, backboard is provided with multiple LED lamp bar, and LED lamp bar comprises PCB substrate and is arranged on the multiple light source assemblies in PCB substrate; Reflector plate to be arranged in PCB substrate and to offer through hole in the position of corresponding light source assembly, and diffuser plate to be arranged on above reflector plate by support column and to form a mixed light space with reflector plate, and diffuser plate is also disposed with prismatic lens and diffusion sheet.The utility model can meet the backlight demand of two cambered surface TV, improves the brightness uniformity of backlight module, and structure is simple, and production cost is low.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is the structural representation of a kind of backlight module for cambered surface TV of the present utility model;
Fig. 2 is the first structural representation of the light source assembly of a kind of backlight module for cambered surface TV of the present utility model;
Fig. 3 is the second structural representation of the light source assembly of a kind of backlight module for cambered surface TV of the present utility model;
Fig. 4 is the structural representation of the backboard of a kind of backlight module for cambered surface TV of the present utility model;
Fig. 5 is a kind of backboard of the backlight module for cambered surface TV of the present utility model and the position relationship schematic diagram of luminescence component;
Fig. 6 is the schematic cross-section of a kind of backlight module for cambered surface TV of the present utility model;
Fig. 7 is the structural representation after the P part in Fig. 6 is amplified.
Detailed description of the invention
The utility model provides a kind of backlight module for cambered surface TV, comprise backboard, reflector plate, diffuser plate and multiple support column, described backboard is provided with multiple LED lamp bar, and described LED lamp bar comprises PCB substrate and is arranged on the multiple light source assemblies in PCB substrate;
Described reflector plate to be arranged in PCB substrate and to offer through hole in the position of corresponding light source assembly, and described diffuser plate to be arranged on above reflector plate by support column and to form a mixed light space with reflector plate, and described diffuser plate is also disposed with prismatic lens and diffusion sheet.
Be further used as preferred embodiment, described backboard is flat back plate or single cambered surface backboard, and described PCB substrate is mounted obliquely within backboard.
Be further used as preferred embodiment, described backboard is two cambered surface backboards, and described PCB substrate is close to backboard and is installed or be mounted obliquely within backboard.
Further, the angle theta of the normal of described light source assembly and the long limit middle vertical plane of backboard
1be 0 ° ~ 30 °, the angle theta of the normal of described light source assembly and the minor face middle vertical plane of backboard
2it is 0 ° ~ 25 °.
Be further used as preferred embodiment, described light source assembly comprises the LED light source be arranged in PCB substrate and the LED lens be vertically set on above LED light source.
Be further used as preferred embodiment, the exiting surface of described LED lens is provided with the lens microstructure for diffusing light that multiple central shaft about LED lens distributes axisymmetricly.
Be further used as preferred embodiment, the shape of described lens microstructure is triangular prism, convex hemisphere, recessed hemisphere or groove.
Be further used as preferred embodiment, described angle theta
1backboard transversely comprise that 2n+1 is symmetric relative to the long limit middle vertical plane of backboard be in different angles scope and there is the angle constant interval of different variation tendency, angle theta
1seamlessly transit at the boundary of adjacent angular constant interval, wherein n is natural number.
Be further used as preferred embodiment, described angle theta
2what the longitudinal direction of backboard comprised 2n+1 is symmetric relative to the minor face middle vertical plane of backboard is in different angles scope and has the angle constant interval of different variation tendency, angle theta
2seamlessly transit at the boundary of adjacent angular constant interval.
Be further used as preferred embodiment, described 2n+1 angle constant interval has different projected lengths on backboard, and has a projected length to be not less than the half of its place length of side.
Below in conjunction with specific embodiment, the utility model is described further.
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 6 and Fig. 7, a kind of backlight module for cambered surface TV, comprise backboard 1, reflector plate 11, diffuser plate 10 and multiple support column 7, backboard 1 is provided with multiple LED lamp bar 2, multiple light source assemblies 3 that LED lamp bar 2 comprises PCB substrate 4 and is arranged in PCB substrate 4;
Reflector plate 11 is arranged on and offers through hole in PCB substrate 4 and in the position of corresponding light source assembly 3 light source assembly 3 is exposed from through hole, diffuser plate 10 to be arranged on above reflector plate 11 by support column 7 and to form a mixed light space with reflector plate 11, diffuser plate 10 is also disposed with prismatic lens 9 and diffusion sheet 8.
If backboard 1 is flat back plate or single cambered surface backboard, PCB substrate 4 is mounted obliquely within backboard 1; If backboard 1 is two cambered surface backboards, then PCB substrate 4 is close to backboard 1 and is installed or be mounted obliquely within backboard 1; Like this, the light source assembly 3 in PCB substrate 4 is made all to be greater than 0 degree with the long limit middle vertical plane of backboard 1 and the angle of minor face middle vertical plane.In Fig. 4, L1 and L2 is respectively long limit and a minor face of backboard 1, and direction, L1 place, long limit is the transverse direction of backboard 1, and direction, minor face L2 place is the longitudinal direction of backboard 1.Long limit middle vertical plane in the application refer to backboard 1 longitudinal direction perpendicular to backboard 1 and by the plane of backboard central point, namely the plane A in Fig. 4, minor face middle vertical plane refer to backboard 1 transverse direction perpendicular to backboard 1 and by the plane of backboard central point, the plane B namely in Fig. 4.When backboard 1 be flat back plate or single cambered surface backboard time, the special circumstances of two cambered surface backboard can be regarded as, therefore, the description of long limit middle vertical plane and minor face middle vertical plane can be adopted equally.
Preferably, with reference to Fig. 2, the angle theta of the normal of light source assembly 3 and the long limit middle vertical plane of backboard 1
1be 0 ° ~ 30 °, the angle theta of the normal of light source assembly 3 and the minor face middle vertical plane of backboard 1
2it is 0 ° ~ 25 °.The normal of multiple light source assemblies 3 of this backlight module is drawn close towards the center position of backboard 1, as shown in Figure 5, in Fig. 5, point C is the central point of backboard 1, the normal L of multiple light source assembly 3 all draws close towards the direction of central point C, therefore the light emission direction of light source assembly 3 and the formed angle of human eye line (i.e. sight line) will be less than backlight module of the prior art, and more toward the edge of backboard 1, the angle theta of light source assembly 3 and backboard 1
1and angle theta
2larger, thus make in shady face that light source assembly 3 is substantially equal with sight line angle everywhere.Be applied in LED cambered surface TV, liquid crystal panel light penetration rate difference everywhere will reduce, make luminance uniformity higher, and LED cambered surface TV can be made to obtain broader full-view image, the peripheral angle of visibility with more true nature and stronger telepresenc, there is splendid visual experience, the backlight demand of the LED cambered surface TV particularly two cambered surface TV of LED can be met.
This backlight module is by regulating angle theta
1and angle theta
2the arrange in pairs or groups liquid crystal panel of various different curvature of same backboard 1 can be adopted to reach good backlight effect, and meet the backlight demand of two cambered surface TV, simple and convenient, General adaptive is strong, and this back light module unit structure is simple, production cost is low.
The distribution curve flux of light source assembly 3 is approximate Lambertian type, can be the combination of LED light source, other light source or light source and lens.Preferably, in the present embodiment, light source assembly 3 comprises the LED light source 6 be arranged in PCB substrate 4 and the LED lens 5 be vertically set on above LED light source 6, the exiting surface of LED lens 5 is provided with the lens microstructure for diffusing light that multiple central shaft about LED lens 5 distributes axisymmetricly, the shape of lens microstructure is triangular prism, convex hemisphere, recessed hemisphere or groove, and the material of lens microstructure is PMMA, PC, PS, Silicone, epoxy resin, urethane acrylate or dimethyl silicone polymer.After LED lens 5 arrange lens microstructure, will be more even from the hot spot of the light of LED lens 5 outgoing, thus make the backlight effect of this backlight module better.
Angle theta
1backboard 1 transversely comprise that 2n+1 is symmetric relative to the long limit middle vertical plane of backboard 1 be in different angles scope and there is the angle constant interval of different variation tendency, angle theta
1seamlessly transit at the boundary of adjacent angular constant interval; Angle theta
2what the longitudinal direction of backboard 1 comprised 2n+1 is symmetric relative to the minor face middle vertical plane of backboard 1 is in different angles scope and has the angle constant interval of different variation tendency, angle theta
2seamlessly transit at the boundary of adjacent angular constant interval, wherein n is natural number.In 2n+1 angle constant interval, from backboard 1 backlight center C more away from, its angle variation tendency is also more obvious.2n+1 angle constant interval has different projected lengths on backboard, and has a projected length to be not less than the half of its place length of side.When backboard 1 is two cambered surface backboards, and PCB substrate 4 is close to backboard 1 when installing, and the preceding paragraph is to angle theta
1and angle theta
2restriction be equivalent to: the transverse direction of backboard 1 is provided with the cambered surface with gradual curvature that 2n+1 section is symmetric relative to the long limit middle vertical plane of backboard 1; The longitudinal direction of backboard 1 is provided with the cambered surface with gradual curvature that 2n+1 section is symmetric relative to the minor face middle vertical plane of backboard 1, and wherein n is natural number.Curvature varying trend from the center of backboard 1 toward each cambered surface of two edge directions is: curvature first becomes large gradually.The horizontal and vertical cambered surface that in the cambered surface of gradual curvature, length is the longest that has be provided with of backboard 1 is called main transformer cambered surface, and the length of main transformer cambered surface is not less than the half of the length on its limit, place.
Backlight module of the present utility model can be used for LED two cambered surface TV, LED cambered surface TV or flat-surface television, as long as suitably adjust light source assembly 3 and the long limit middle vertical plane of backboard 1 and the angle theta of minor face middle vertical plane
1with θ
2, the normal of light source assembly 3 is drawn close with the center position towards backboard 1.
More than that better enforcement of the present utility model is illustrated, but the invention is not limited to embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and these equivalent modification or replacement are all included in the application's claim limited range.
Claims (10)
1. for a backlight module for cambered surface TV, it is characterized in that, comprise backboard, reflector plate, diffuser plate and multiple support column, described backboard is provided with multiple LED lamp bar, and described LED lamp bar comprises PCB substrate and is arranged on the multiple light source assemblies in PCB substrate;
Described reflector plate to be arranged in PCB substrate and to offer through hole in the position of corresponding light source assembly, and described diffuser plate to be arranged on above reflector plate by support column and to form a mixed light space with reflector plate, and described diffuser plate is also disposed with prismatic lens and diffusion sheet.
2. a kind of backlight module for cambered surface TV according to claim 1, is characterized in that, described backboard is flat back plate or single cambered surface backboard, and described PCB substrate is mounted obliquely within backboard.
3. a kind of backlight module for cambered surface TV according to claim 1, is characterized in that, described backboard is two cambered surface backboards, and described PCB substrate is close to backboard and is installed or be mounted obliquely within backboard.
4. a kind of backlight module for cambered surface TV according to Claims 2 or 3, is characterized in that, the angle theta of the normal of described light source assembly and the long limit middle vertical plane of backboard
1be 0 ° ~ 30 °, the angle theta of the normal of described light source assembly and the minor face middle vertical plane of backboard
2it is 0 ° ~ 25 °.
5. a kind of backlight module for cambered surface TV according to claim 1, is characterized in that, described light source assembly comprises the LED light source be arranged in PCB substrate and the LED lens be vertically set on above LED light source.
6. a kind of backlight module for cambered surface TV according to claim 5, is characterized in that, the exiting surface of described LED lens is provided with the lens microstructure for diffusing light that multiple central shaft about LED lens distributes axisymmetricly.
7. a kind of backlight module for cambered surface TV according to claim 6, is characterized in that, the shape of described lens microstructure is triangular prism, convex hemisphere, recessed hemisphere or groove.
8. a kind of backlight module for cambered surface TV according to claim 4, is characterized in that, described angle theta
1backboard transversely comprise that 2n+1 is symmetric relative to the long limit middle vertical plane of backboard be in different angles scope and there is the angle constant interval of different variation tendency, angle theta
1seamlessly transit at the boundary of adjacent angular constant interval, wherein n is natural number.
9. a kind of backlight module for cambered surface TV according to claim 8, is characterized in that, described angle theta
2what the longitudinal direction of backboard comprised 2n+1 is symmetric relative to the minor face middle vertical plane of backboard is in different angles scope and has the angle constant interval of different variation tendency, angle theta
2seamlessly transit at the boundary of adjacent angular constant interval.
10. a kind of backlight module for cambered surface TV according to claim 9, is characterized in that, described 2n+1 angle constant interval has different projected lengths on backboard, and has a projected length to be not less than the half of its place length of side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420607634.9U CN204164828U (en) | 2014-10-20 | 2014-10-20 | A kind of backlight module for cambered surface TV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420607634.9U CN204164828U (en) | 2014-10-20 | 2014-10-20 | A kind of backlight module for cambered surface TV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204164828U true CN204164828U (en) | 2015-02-18 |
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ID=52538514
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420607634.9U Expired - Fee Related CN204164828U (en) | 2014-10-20 | 2014-10-20 | A kind of backlight module for cambered surface TV |
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|---|---|
| CN (1) | CN204164828U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242343A (en) * | 2015-10-27 | 2016-01-13 | 武汉华星光电技术有限公司 | Display device having curved-surface light guide plate |
| CN114153093A (en) * | 2021-12-09 | 2022-03-08 | 武汉华星光电技术有限公司 | Curved surface backlight module and curved surface display device |
-
2014
- 2014-10-20 CN CN201420607634.9U patent/CN204164828U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242343A (en) * | 2015-10-27 | 2016-01-13 | 武汉华星光电技术有限公司 | Display device having curved-surface light guide plate |
| CN114153093A (en) * | 2021-12-09 | 2022-03-08 | 武汉华星光电技术有限公司 | Curved surface backlight module and curved surface display device |
| CN114153093B (en) * | 2021-12-09 | 2023-04-07 | 武汉华星光电技术有限公司 | Curved surface backlight module and curved surface 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 |
Granted publication date: 20150218 Termination date: 20201020 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |