CN2613785Y - Light reflector assembly - Google Patents
Light reflector assembly Download PDFInfo
- Publication number
- CN2613785Y CN2613785Y CN 03244308 CN03244308U CN2613785Y CN 2613785 Y CN2613785 Y CN 2613785Y CN 03244308 CN03244308 CN 03244308 CN 03244308 U CN03244308 U CN 03244308U CN 2613785 Y CN2613785 Y CN 2613785Y
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- China
- Prior art keywords
- light
- guide plate
- light guide
- semi
- permeable diaphragm
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- Expired - Lifetime
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Abstract
The utility model supplies a back light assembly comprising a luminous body for supplying luminous beam, a light conducting board assembly which is positioned on the two laterals of the luminous body for guiding the scattering direction of the luminous beam, a semi-permeable diaphragm which is positioned on the upper of the luminous body and has holes of complex number, and a reflecting board which is positioned on the lower of the reflecting board and is capable of reflecting the luminous beam back to the light conducting board to enhance the using efficiency of the luminous beam, wherein the luminous beam not only is capable of being conducted through the holes of the semi-permeable diaphragm, but also is capable of being reflected by the semi-permeable diaphragm and the reflecting board, and then being upward conducted by the light conducting board.
Description
(1) technical field
The relevant a kind of backlight assembly of the utility model is especially about a kind of backlight assembly that is applied to panel of LCD.
(2) background technology
Backlight assembly (Backlight Module) is the key part and component of LCD (LCD) panel, because liquid crystal itself can't be luminous, the function of backlight assembly just is to supply the light source that brightness is abundant and be evenly distributed, and makes normally show image of panel.Because the LCD panel has been widely used in numerous electronic products with growth potentiality, as monitor, notebook computer, digital camera, personal digital assistant, projector etc., the demand of backlight assembly and relevant spare part thereof is naturally also along with continuing growth.
See also Fig. 1, it is to be known backlight assembly structural representation.Backlight assembly is mainly assembled by light source 10, light guide plate 11, reflecting plate 12, diffuser plate 13, prismatic lens 14 and housing etc.Light source 10 must possess characteristics such as high brightness and life-span length, present light source has cold cathode fluorescent lamp (Cold CathodeFluorescent Lamp, CCFL) and hot cathode fluorescent lamp, light emitting diode (LED), electroluminescence sheet (EL) etc., wherein be main flow with CCFL.The effect of light guide plate 11 is the scattering direction of direct light, is used for improving the briliancy of panel, and guarantees the homogeneity of panel luminance.Light guide plate 11 is to utilize the method for ejection formation that propylene is pressed into ganoid plate, then with having the high reflection and the material of extinction not, stamp the diffusion point in the bottom surface of light guide plate 11, when light is run into the diffusion point, reflected light can be toward all angles diffusion, destroy conditioned reflex then and penetrate, utilize various densitys, diffusion point not of uniform size, can make light guide plate 11 uniformly light-emittings by light guide plate is positive.In the light reflected back light guide plate 11 that the purposes of reflecting plate 12 is the bottom surface is exposed, be used for promoting the service efficiency of light.Effect as for diffuser plate 13 is to allow the distribution of light more even, makes shadow that can't see reflection spot from the front.Yet because after 13 ejaculations of light self-diffusion plate, the non-constant of the directive property of its light must utilize prismatic lens 14 to revise direction of light, reaches the effect of optically focused, promotes positive brightness.
Generally speaking, backlight assembly can be divided into " straight-down negative " and " side-light type " two kinds of designs according to light source position, and large size panel mostly utilizes the straight-down negative design at present.The straight-down negative design places fluorescent tube under the assembly, but because fluorescent tube is mutually far short of what is expected with the briliancy of other backlight assemblies, makes can be easy to see tangible lamp tube light source on panel, and causes the puzzlement in the design of site.For avoiding this phenomenon, usually light guide plate is thickeied to certain thickness, will design lessly and separation near the site of light source again, too obvious to prevent fluorescent tube, cause uneven backlight assembly, but this design has increased the weight and the thickness of backlight assembly also simultaneously.
(3) utility model content
The purpose of this utility model provides a kind of backlight assembly, and it can evenly disperse the light source of fluorescent tube, avoids fluorescent tube too obvious.
Another purpose of the present utility model provides a kind of backlight assembly, and weight and thickness that it can alleviate backlight assembly meet the lightening trend of present LCD panel.
For reaching above-mentioned purpose, the utility model provides a kind of backlight assembly, and it comprises a luminophor, in order to light to be provided; One light guide plate group is positioned at the dual-side of this luminophor, in order to guide the scattering direction of this light; One semi-permeable diaphragm is positioned at the top of this luminophor, and has a plurality of holes; An and reflecting plate, be positioned at the below of this light guide plate, it can be with in this this light guide plate of light reflected back, in order to promote the service efficiency of this light, wherein, this light can upwards be derived through this holes of this semi-permeable diaphragm, also can upwards derive via this light guide plate with the reflection of this semi-permeable diaphragm and this reflecting plate again.
According to above-mentioned conception, wherein this luminophor comprises at least one fluorescent tube.
According to above-mentioned conception, wherein this light guide plate group comprises two light guide plate.
According to above-mentioned conception, wherein this light guide plate is a clapboard.
According to above-mentioned conception, wherein the thick side of this clapboard is near this luminophor.
According to above-mentioned conception, wherein this semi-permeable diaphragm is curved.
According to above-mentioned conception, this backlight assembly also comprises a diffuser plate, is positioned at the top of this light guide plate group and this semi-permeable diaphragm, uses so that the distribution of this light is more even.
According to above-mentioned conception, this backlight assembly also comprises a prismatic lens, is the top that is positioned at this diffuser plate, in order to revise the direction of this light, reaches the effect of optically focused.
The utility model provides a kind of backlight assembly on the other hand, and it comprises a luminophor, in order to light to be provided; One light guide plate group is positioned at the dual-side of this luminophor, in order to guide the scattering direction of this light; One semi-permeable diaphragm is positioned at the top of this luminophor, and has a plurality of holes; And a diffuser plate, be positioned at the top of this light guide plate group and this semi-permeable diaphragm, with so that the distribution of this light is more even, wherein, this light can upwards be derived through this holes of this semi-permeable diaphragm, also can upwards derive via this light guide plate with the reflection of this semi-permeable diaphragm again.
According to above-mentioned conception, wherein this luminophor comprises at least one fluorescent tube.
According to above-mentioned conception, wherein this light guide plate group comprises two light guide plate.
According to above-mentioned conception, wherein this light guide plate is a clapboard.
According to above-mentioned conception, wherein the thick side of this clapboard is near this luminophor.
According to above-mentioned conception, wherein this semi-permeable diaphragm is curved.
According to above-mentioned conception, this backlight assembly also comprises a reflecting plate, is positioned at the below of this light guide plate, and it can be with in this this light guide plate of light reflected back, in order to promote the service efficiency of this light.
According to above-mentioned conception, this backlight assembly also comprises a prismatic lens, is positioned at the top of this diffuser plate, in order to revise the direction of this light, reaches the effect of optically focused.
The another aspect of the utility model provides a kind of backlight assembly, and it comprises a luminophor, in order to light to be provided; One light guide plate group is positioned at the dual-side of this luminophor, in order to guide the scattering direction of this light; And a semi-permeable diaphragm, be positioned at the top of this luminophor, and have a plurality of holes, wherein, this light can upwards be derived through this holes of this semi-permeable diaphragm, but the also reflection of this semi-permeable diaphragm of mat is upwards derived via this light guide plate again.
According to above-mentioned conception, wherein this luminophor comprises at least one fluorescent tube.
According to above-mentioned conception, wherein this light guide plate group comprises two light guide plate.
According to above-mentioned conception, wherein this light guide plate is a clapboard.
According to above-mentioned conception, wherein the thick side of this clapboard is near this luminophor.
According to above-mentioned conception, wherein this semi-permeable diaphragm is curved.
According to above-mentioned conception, this backlight assembly also comprises a reflecting plate, is positioned at the below of this light guide plate, and it can be with in this this light guide plate of light reflected back, in order to promote the service efficiency of this light.
According to above-mentioned conception, this backlight assembly also comprises a diffuser plate, is positioned at the top of this light guide plate group and this semi-permeable diaphragm, uses so that the distribution of this light is more even.
According to above-mentioned conception, this backlight assembly also comprises a prismatic lens, is positioned at the top of this diffuser plate, in order to revise the direction of this light, reaches the effect of optically focused.
The utility model, can be more clearly understood in conjunction with the accompanying drawings to the detailed description of embodiment by following.
(4) description of drawings
Fig. 1 is known backlight assembly structural representation.
Fig. 2 is the semi-permeable diaphragm synoptic diagram for the utility model preferred embodiment.
Fig. 3 is the backlight assembly structural representation for the utility model preferred embodiment.
(5) embodiment
For improving the too tangible problem of fluorescent tube in the known backlight assembly, the utility model is the design that increases by a semi-permeable diaphragm in backlight assembly.See also Fig. 2, it is semi-permeable diaphragm 20 synoptic diagram for the utility model preferred embodiment.This semi-permeable diaphragm 20 is to be arranged at fluorescent tube 21 tops, and has a plurality of holes 201 on the semi-permeable diaphragm 20, in order to disperse the light source of fluorescent tube, avoids fluorescent tube too obvious.This semi-permeable diaphragm 20 has shaded effect, and its base material can be selected from general PI and PC etc.When light during, the derivation that can directly make progress, and, can be reflected downwards, upwards derive through light guide plate again when light during through the non-broken hole position of semi-permeable diaphragm 20 through the holes 201 of semi-permeable diaphragm 20.The size of holes 201, distribution and spacing design etc. on this semi-permeable diaphragm 20, the gradient and the indentation design of the light guide plate of can arranging in pairs or groups simultaneously reach optimization.In addition, this semi-permeable diaphragm 20 can also a radian be arranged at the top of this fluorescent tube 21.
See also Fig. 3, it is the backlight assembly structural representation for the utility model preferred embodiment.This backlight assembly comprises a luminophor 30, a light guide plate group 31, a semi-permeable diaphragm 32, a reflecting plate 33, a diffuser plate 34, a prismatic lens 35 and housing 36.This luminophor 30 can comprise at least one fluorescent tube, in order to light to be provided.This light guide plate group then comprises two wedge shape light guide plate 31, lay respectively at the dual-side of luminophor 30, wherein, the thick side of this wedge shape light guide plate 31 is near this luminophor 30, and the light that this luminophor 30 is sent can further be guided the scattering direction of light again toward the thin side conduction of this light guide plate 31 by this light guide plate 31.This semi-permeable diaphragm 32 is the tops that are positioned at this luminophor 30, and has a plurality of holes, in order to disperse the light source of fluorescent tube, avoids fluorescent tube too obvious.This reflecting plate 33 is the belows that are positioned at this light guide plate 31, in its this light guide plate 31 of light reflected back that the bottom surface can be exposed, is used for promoting the service efficiency of light.This diffuser plate 34 is the tops that are positioned at this light guide plate 31 and this semi-permeable diaphragm 32, uses so that the distribution of this light is more even.35 tops that are positioned at this diffuser plate 34 of this prismatic lens in order to revise the direction of light, reach the effect of optically focused.
According to above-mentioned backlight assembly, the light that is sent by the arbitrary fluorescent tube in the luminophor 30 is at first toward penetrating from all directions, when light conducts toward the light guide plate 31 of dual-side, can be by the effect of diffusion point or reflection spot in the light guide plate 31, light upwards is directed to LCD panel 37, and can be by the effect of reflecting plate 33, in this light guide plate 31 of the light reflected back that will expose, further upwards derive again.When the light that sends when fluorescent tube up conducts, if when the holes of this semi-permeable diaphragm 32, the derivation that can directly make progress, and when light during through the non-broken hole position of this semi-permeable diaphragm 32, can be downwards by 32 reflections of this semi-permeable diaphragm, further upwards derive again through the effect of this light guide plate 31 and this reflecting plate 33.So utilize the holes design of this semi-permeable diaphragm 30, can evenly disperse lamp tube light source, avoid fluorescent tube too obvious.
In sum, backlight assembly of the present utility model is the centre that fluorescent tube is placed two wedge shape light guide plate, has the advantage of clapboard, can strengthen the control to light going direction, and can alleviate the weight and the thickness of backlight assembly, meet the lightening trend of present LCD panel.In addition, backlight assembly of the present utility model adds a semi-permeable diaphragm above fluorescent tube, utilizes the holes design on the semi-permeable diaphragm, can disperse lamp tube light source, avoids fluorescent tube too obvious, and makes backlight assembly have preferable homogeneity.
Claims (10)
1. a backlight assembly is characterized in that, comprises:
One luminophor is in order to provide light;
One light guide plate group, the dual-side that is positioned at this luminophor is to guide the scattering direction of this light;
One semi-permeable diaphragm is positioned at the top of this luminophor and has a plurality of holes; And
One reflecting plate, the below that is arranged in this light guide plate is with this this light guide plate of light reflected back;
Wherein, this light is upwards derived by this holes of this semi-permeable diaphragm, or upwards derives via this light guide plate by the reflection of this semi-permeable diaphragm and this reflecting plate again.
2. backlight assembly as claimed in claim 1 is characterized in that this luminophor comprises at least one fluorescent tube.
3. backlight assembly as claimed in claim 1 is characterized in that, this light guide plate group comprises two light guide plate, and this light guide plate is a clapboard, and the thick side of this clapboard is near this luminophor.
4. backlight assembly as claimed in claim 1 is characterized in that this semi-permeable diaphragm is curved.
5. backlight assembly as claimed in claim 1 is characterized in that, also comprises:
One diffuser plate is positioned at the top of this light guide plate group and this semi-permeable diaphragm; And
One prismatic lens is positioned at direction and the optically focused of top to revise this light of this diffuser plate.
6. a backlight assembly is characterized in that, comprises:
One luminophor is in order to provide light;
One light guide plate group, the dual-side that is positioned at this luminophor is to guide the scattering direction of this light;
One semi-permeable diaphragm is positioned at the top of this luminophor and has a plurality of holes; And
One diffuser plate is positioned at the top of this light guide plate group and this semi-permeable diaphragm;
Wherein, this light is upwards derived through this holes of this semi-permeable diaphragm, or upwards derives via this light guide plate by the reflection of this semi-permeable diaphragm again.
7. backlight assembly as claimed in claim 6 is characterized in that, also comprises:
One reflecting plate, the below that is arranged in this light guide plate is with this this light guide plate of light reflected back; And
One prismatic lens is positioned at direction and the optically focused of top to revise this light of this diffuser plate.
8. a backlight assembly is characterized in that, comprises:
One luminophor is in order to provide light;
One light guide plate group, the dual-side that is positioned at this luminophor is to guide the scattering direction of this light; And
One semi-permeable diaphragm is positioned at the top of this luminophor and has a plurality of holes;
Wherein, this light is upwards derived through this holes of this semi-permeable diaphragm, or upwards derives via this light guide plate by the reflection of this semi-permeable diaphragm again.
9. backlight assembly as claimed in claim 8 is characterized in that, also comprises a reflecting plate, and the below that is arranged in this light guide plate is with this this light guide plate of light reflected back.
10. backlight assembly as claimed in claim 8 is characterized in that, also comprises:
One diffuser plate is positioned at the top of this light guide plate group and this semi-permeable diaphragm; And
One prismatic lens is positioned at direction and the optically focused of top to revise this light of this diffuser plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03244308 CN2613785Y (en) | 2003-04-21 | 2003-04-21 | Light reflector assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03244308 CN2613785Y (en) | 2003-04-21 | 2003-04-21 | Light reflector assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2613785Y true CN2613785Y (en) | 2004-04-28 |
Family
ID=34251148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03244308 Expired - Lifetime CN2613785Y (en) | 2003-04-21 | 2003-04-21 | Light reflector assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2613785Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100395623C (en) * | 2005-06-10 | 2008-06-18 | 清华大学 | Back light module |
| CN102644886A (en) * | 2005-08-27 | 2012-08-22 | 3M创新有限公司 | Edge-lit backlight having light recycling cavity with concave transflector |
| CN103239212A (en) * | 2013-05-14 | 2013-08-14 | 徐志强 | Vein observation device capable of reducing heat emitting of light emitting tube |
| CN103239213A (en) * | 2013-05-14 | 2013-08-14 | 徐志强 | Observation device for auxiliary observation of venipuncture |
| CN103705211A (en) * | 2013-05-14 | 2014-04-09 | 徐志强 | Light-emitting component for venepuncture auxiliary observation device |
| US9563074B2 (en) | 2013-11-28 | 2017-02-07 | Hon Hai Precision Industry Co., Ltd. | Backlight module |
| US9857518B2 (en) | 2005-08-27 | 2018-01-02 | 3M Innovative Properties Company | Direct-lit backlight having light recycling cavity with concave transflector |
-
2003
- 2003-04-21 CN CN 03244308 patent/CN2613785Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100395623C (en) * | 2005-06-10 | 2008-06-18 | 清华大学 | Back light module |
| CN102644886A (en) * | 2005-08-27 | 2012-08-22 | 3M创新有限公司 | Edge-lit backlight having light recycling cavity with concave transflector |
| US9857518B2 (en) | 2005-08-27 | 2018-01-02 | 3M Innovative Properties Company | Direct-lit backlight having light recycling cavity with concave transflector |
| CN103239212A (en) * | 2013-05-14 | 2013-08-14 | 徐志强 | Vein observation device capable of reducing heat emitting of light emitting tube |
| CN103239213A (en) * | 2013-05-14 | 2013-08-14 | 徐志强 | Observation device for auxiliary observation of venipuncture |
| CN103705211A (en) * | 2013-05-14 | 2014-04-09 | 徐志强 | Light-emitting component for venepuncture auxiliary observation device |
| CN103239212B (en) * | 2013-05-14 | 2014-12-03 | 李娜 | Vein observation device capable of reducing heat emitting of light emitting tube |
| CN103239213B (en) * | 2013-05-14 | 2015-01-07 | 徐志强 | Observation device for auxiliary observation of venipuncture |
| US9563074B2 (en) | 2013-11-28 | 2017-02-07 | Hon Hai Precision Industry Co., Ltd. | Backlight module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130421 Granted publication date: 20040428 |