CN203810295U - Novel backlight source - Google Patents
Novel backlight source Download PDFInfo
- Publication number
- CN203810295U CN203810295U CN201420206135.9U CN201420206135U CN203810295U CN 203810295 U CN203810295 U CN 203810295U CN 201420206135 U CN201420206135 U CN 201420206135U CN 203810295 U CN203810295 U CN 203810295U
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- China
- Prior art keywords
- reflection cavity
- light
- lgp
- diffusion barrier
- light source
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- Expired - Lifetime
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- 230000004888 barrier function Effects 0.000 claims abstract description 27
- 238000009792 diffusion process Methods 0.000 claims abstract description 27
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 239000004332 silver Substances 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 abstract 3
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000007598 dipping method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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- Planar Illumination Modules (AREA)
Abstract
The utility model discloses a novel backlight source which comprises a diffusion barrier, a light guide plate pasted below the diffusion barrier, an LED light source located on the lateral portion of the light guide plate and a reflection cavity for bearing the diffusion barrier, the light guide plate and the LED light source. The novel backlight source is characterized in that at least one concave portion is formed in the inner wall of the reflection cavity, the inner wall of the reflection cavity is provided with the concave portion opposite to the LED light source in position, the diffusion barrier comprises a middle light-transmitting layer and light blocking portions surrounding the periphery of the middle light-transmitting layer, and the concave portion is covered with the light blocking portions. The concave portion is formed in the position, opposite to the LED light source in position, of the inner wall of the reflection cavity so that the position of reflected light of the LED light source in the reflection cavity can be backwards moved to the bottom position of the concave portion, the diffusion barrier with the light-transmitting middle and the light-blocking periphery is adopted in a combined mode, the reflected light concentrated in the concave portion can be blocked by the light blocking portions of the diffusion barrier, wisp light spots on the periphery of the contact position of the reflection cavity and a display area are effectively reduced, and the light-emitting uniformity of the backlight source product is improved.
Description
Technical field
The utility model relates to LED-backlit source domain, relates in particular to a kind of Novel backlight.
Background technology
In recent years, along with the fast development of LED technology and household electrical appliances market, small size backlight product is gradually by the large batch of buying of household electrical appliances market, and the requirement that client goes out optical property to product is more and more higher.And present traditional backlight, as shown in Figure 1,1 is diffusion barrier, 2 is LGP, 3 is reflectance coating, 4 for posting the wiring board of LED, 5 is reflection cavity, the reflection cavity inner surface of this kind of structure is single planar structure, the backlight product of this structure sends through LGP forming surface light source from light source at light, but and the one side of light-emitting zone symmetry through the effect of reflection cavity, can on LGP and reflection cavity contact area face, form a very bright bright wisp hot spot, have a strong impact on the uniformity of backlight product bright dipping.
The purpose of this utility model provides a kind of Novel backlight, can solve existing backlight product bright dipping problem of non-uniform.
Summary of the invention
The purpose of this utility model is, provides a kind of bright dipping uniform Novel backlight.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of Novel backlight, comprise a diffusion barrier, one pastes the LGP below described diffusion barrier, is positioned at the LED light source of described LGP sidepiece and for carrying the reflection cavity of diffusion barrier, LGP and LED light source, it is characterized in that: described reflection cavity inwall is provided with at least one recess.
Preferably, described reflection cavity inwall is provided with the recess relative with described LED light source position.
Preferably, the light-blocking part of photic zone and the described middle photic zone surrounding of encirclement in the middle of described diffusion barrier comprises, described light-blocking part is covered in recess top.
Preferably, described LED light source comprises a wiring board and is positioned at least one the LED device on described wiring board.
Preferably, one end of described LGP has the groove matching with described LED device shape, number and position, described groove and LED light source homonymy.
Preferably, described light-blocking part is black or silver color.
Preferably, the both sides of described LGP also have at least one LGP fixed part, and the both sides in described reflection cavity are also provided with the reflection cavity fixed part matching with described LGP fixed part.
Preferably, in described reflection cavity, have light resource installing section, described light resource installing section comprises wiring board mounting groove and support portion, and described LED light source is arranged on the wiring board of light resource installing section.
Preferably, in described LGP, there is a protuberance with the opposing one end of groove location, the installation that matches of the recess of the protuberance of described LGP and reflection cavity inwall.
Preferably, the gap between the protuberance of described LGP and the recess of reflection cavity inwall is 0.2mm-0.3mm.
Compared with prior art, the utlity model has following advantage:
Be provided with recess by the reflection cavity inwall relative in LED light source position, can allow LED light source behind the reverberation position of reflection cavity, move on to the bottom position of recess, in conjunction with adopting middle white, the diffusion barrier of surrounding black, the black part of diffusion barrier can stop the reverberation that concentrates on recess, thereby prevent that light from directly reflecting and entering in viewing area through high light in LGP, effectively reduce reflection cavity contacts periphery bright wisp hot spot with viewing area, make the outgoing light homogeneity of viewing area improve 1%-8%, improve the outgoing light homogeneity of backlight product and gone out optical property, the assembling of LGP and reflection cavity need not be controlled by operator, completed knocked down products very easily.
Brief description of the drawings
Fig. 1 is background technology accompanying drawing;
Fig. 2 is the STRUCTURE DECOMPOSITION figure of a kind of Novel backlight of the present utility model.
Detailed description of the invention
For making the technical solution of the utility model clearer, below by specific embodiment, the utility model is elaborated.
As shown in Figure 2, a kind of Novel backlight, comprises that a diffusion barrier 1, pastes LGP below described diffusion barrier 12, and be placed on reflectance coating 3 below described LGP 2, be positioned at the LED light source 4 of LGP 2 sidepieces and for carrying the reflection cavity 5 of diffusion barrier 1, LGP 2, reflectance coating 3 and LED light source 4.
Wherein, described diffusion barrier 1 comprises middle photic zone and surrounds the light-blocking part of described middle photic zone surrounding.In the present embodiment, middle photic zone is white, and light-blocking part is black, and in other embodiments, the light-blocking part of diffusion barrier can be silver color, is not limited to the present embodiment, and described diffusion barrier 1 sticks on LGP 2 tops, make described backlight to go out light effect better.
Described LED light source 4 comprises a wiring board 41 and is positioned at least one the LED device 42 on described wiring board.
One end of described LGP 2 has the groove 21 matching with described LED device 42 shapes, number and position, described groove 21 and LED light source 4 homonymies, the quantity of described groove and LED device 42 is 1-22, and in the present embodiment, described groove 21 and LED device 42 are 5.Install and fix in the time that described reflection cavity 5 is inner when LGP 2, described wiring board 41 is positioned on LGP 2 sidepieces 22, described LED device 42 is positioned at described groove 21 inside, and in the time that LED device is worked, the light of launching is directly transmitted into described LGP from described groove.
The both sides of described LGP 2 also have at least one LGP fixed part 23, and the both sides in described reflection cavity 5 are also provided with the reflection cavity fixed part 51 matching with described LGP fixed part 23, mate with the installation of reflection cavity for LGP.Described LGP mates with the installation of reflection cavity, and pattern tool is processed, and does not need operator's precision contraposition, assembly precision need not be controlled by operator, completed knocked down products very easily.
Described reflectance coating 3 is the reflectance coating of silver color or white, is preferably silver color in the present embodiment, and described reflectance coating 3 is mounted on reflection cavity 5 inside, in other embodiments, also can adopt white reflection cavity, also can play the effect of reflective membrane, is not limited to the present embodiment.
In described reflection cavity 5, have light resource installing section 52, described light resource installing section also has wiring board mounting groove 521 and support portion 522, for the wiring board 41 with LED device 42 is installed.Described wiring board 41 is directly inserted in described wiring board mounting groove 521, and described support portion 522 is for preventing that wiring board 41 and reflection cavity from not becoming 90 degree to place.In described LGP 2, can also have a protuberance 24 with opposing one end, groove 21 positions, relative reflection cavity 5 inwalls of described light resource installing section 52 are provided with recess 53, and LED light source is relative with the position of recess 53.In other embodiments, the reflection cavity inwall of described light resource installing section both sides also can be provided with recess, is not limited to the present embodiment.The installation that matches of recess 53 in protuberance 24 and the reflection cavity 5 of described LGP, the gap between the recess in protuberance and the reflection cavity of described LGP is 0.2mm-0.3mm.In other embodiments, in LGP, can there is no protuberance with the opposing one end of groove location yet, be not limited to the present embodiment.
Described reflection cavity 5 comprises reflection cavity inside casing 54 and reflection cavity housing 55, the area of described diffusion barrier 1 is greater than the area of described reflection cavity inside casing 54 but is not more than the area of described reflection cavity housing 55, the width of the light-blocking part of described diffusion barrier 1 is greater than the recess thickness of described reflection cavity inwall, described light-blocking part can be covered on the recess 53 of described reflection cavity inwall, make light-blocking part can stop the reverberation of recess 53.
In the present embodiment, be provided with recess by the reflection cavity inwall relative in LED light source position, can allow LED light source behind the reverberation position of reflection cavity, move on to the bottom position of recess, in conjunction with adopting middle white, the diffusion barrier of surrounding black, the black part of diffusion barrier can stop the reverberation that concentrates on recess, thereby prevent that light from directly reflecting and entering in viewing area through high light in LGP, effectively reduce reflection cavity contacts periphery bright wisp hot spot with viewing area, make the outgoing light homogeneity of viewing area improve 1%-8%, improve the outgoing light homogeneity of backlight product and gone out optical property, the assembling of LGP and reflection cavity need not be controlled by operator, completed knocked down products very easily.
Above the utility model is described in detail, applies specific case principle of the present utility model and embodiment are set forth in literary composition, the explanation of above embodiment is just for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (10)
1. a Novel backlight, comprise a diffusion barrier, one pastes the LGP below described diffusion barrier, is positioned at the LED light source of described LGP sidepiece and for carrying the reflection cavity of diffusion barrier, LGP and LED light source, it is characterized in that: described reflection cavity inwall is provided with at least one recess.
2. a kind of Novel backlight claimed in claim 1, is characterized in that: described reflection cavity inwall is provided with the recess relative with described LED light source position.
3. a kind of Novel backlight according to claim 1, is characterized in that: the light-blocking part of photic zone and the described middle photic zone surrounding of encirclement in the middle of described diffusion barrier comprises, described light-blocking part is covered in recess top.
4. a kind of Novel backlight according to claim 1, is characterized in that: described LED light source comprises a wiring board and is positioned at least one the LED device on described wiring board.
5. a kind of Novel backlight according to claim 4, is characterized in that: one end of described LGP has the groove matching with described LED device shape, number and position, described groove and LED light source homonymy.
6. a kind of Novel backlight according to claim 3, is characterized in that: described light-blocking part is black or silver color.
7. a kind of Novel backlight according to claim 1, is characterized in that: the both sides of described LGP also have at least one LGP fixed part, the both sides in described reflection cavity are also provided with the reflection cavity fixed part matching with described LGP fixed part.
8. a kind of Novel backlight according to claim 1, is characterized in that: in described reflection cavity, have light resource installing section, described light resource installing section comprises wiring board mounting groove and support portion, and described LED light source is arranged on the wiring board of light resource installing section.
9. a kind of Novel backlight according to claim 5, is characterized in that: in described LGP, have a protuberance with the opposing one end of groove location, the installation that matches of the recess of the protuberance of described LGP and reflection cavity inwall.
10. a kind of Novel backlight according to claim 9, is characterized in that: the gap between the protuberance of described LGP and the recess of reflection cavity inwall is 0.2mm-0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420206135.9U CN203810295U (en) | 2014-04-25 | 2014-04-25 | Novel backlight source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420206135.9U CN203810295U (en) | 2014-04-25 | 2014-04-25 | Novel backlight source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203810295U true CN203810295U (en) | 2014-09-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420206135.9U Expired - Lifetime CN203810295U (en) | 2014-04-25 | 2014-04-25 | Novel backlight source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203810295U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570174A (en) * | 2014-12-11 | 2015-04-29 | 太湖金张科技股份有限公司 | Ultraviolet blocking optical diffusion structure and ultraviolet blocking backlight product |
| CN104570173A (en) * | 2014-12-11 | 2015-04-29 | 太湖金张科技股份有限公司 | Blue-light-proof optical diffusion structures and backlight device |
-
2014
- 2014-04-25 CN CN201420206135.9U patent/CN203810295U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570174A (en) * | 2014-12-11 | 2015-04-29 | 太湖金张科技股份有限公司 | Ultraviolet blocking optical diffusion structure and ultraviolet blocking backlight product |
| CN104570173A (en) * | 2014-12-11 | 2015-04-29 | 太湖金张科技股份有限公司 | Blue-light-proof optical diffusion structures and backlight device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |
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| CX01 | Expiry of patent term |