CN207198365U - A kind of light guide plate of single-sided illumination - Google Patents
A kind of light guide plate of single-sided illumination Download PDFInfo
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- CN207198365U CN207198365U CN201721042242.2U CN201721042242U CN207198365U CN 207198365 U CN207198365 U CN 207198365U CN 201721042242 U CN201721042242 U CN 201721042242U CN 207198365 U CN207198365 U CN 207198365U
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- guide plate
- light guide
- color dot
- sided illumination
- row
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Abstract
The utility model provides a kind of light guide plate of single-sided illumination, and side of the light guide plate away from light guide plate exiting surface has scattering point；The side of the light guide plate is provided with LED light source, opposite side on the other side is provided with reflective sheeting；The scattering point is in array distribution, and the scattering point of adjacent two row mutually staggers；The distance between scattered color dot in each row is identical, and the spacing distance between two dissipation color dots is also identical；The scattered color dot by close to one end of LED light source to the other end, its diameter change from small to big after again from large to small；Scattered color dot diameter in each row is identical.
Description
Technical field
It the utility model is related to one kind and go out electro-optical device, more particularly to a kind of light guide plate.
Background technology
There is panel light bloom to lead to, and light the advantages that soft, other indoor lamps can not match in excellence or beauty.Ultra-thin panel light
The significant components used are light guide plates, the scattering point good distribution on light guide plate whether the light extraction efficiency, luminous equal of counter plate lamp
Even influence is very big.
Scattering point can be formed by laser gasification, mode of printing.Laser gasification principle is that beam of laser is irradiated to leaded light
Plate surface, the light guide plate surface that laser energy makes gasify to form concave point, i.e. scattering point.Print principle is that net is first made on half tone
Point, then with ink net-point printing in light guide plate surface, finally dry ink, scattering point one by one be formed on light guide plate.
Laser gasification is to gasify point by point, and efficiency is low, and has particular/special requirement to the material of light guide plate, can only be that PMMA materials (are commonly called as Asia
Gram force)；But mode of printing is used, production efficiency is high, and material is not required.
Single-sided illumination panel light easy structure, there was only a light source board in the side of light guide plate.Single-sided illumination light guide plate
It is characterized in more remote from light source, light energy is lower, so we need to design scattering point on light guide plate and are used for balancing each region
Light extraction efficiency.Irrational scattering point, which is distributed, can influence panel light uniformity of luminance, for example incident side is partially dark, and non-light incidence side has again
Bright border；Enter light and non-light incidence side is partially bright, the middle non-uniform light phenomenon of concealed light etc. partially.
Utility model content
Technical problem underlying to be solved in the utility model is to provide a kind of light guide plate of single-sided illumination, and light extraction is more equal
It is even.
In order to solve above-mentioned technical problem, the utility model provides a kind of light guide plate of single-sided illumination, the leaded light
Side of the plate away from light guide plate exiting surface has scattering point；The side of the light guide plate is provided with LED light source, on the other side another
Side is provided with reflective sheeting；
The scattering point is in array distribution, and the scattering point of adjacent two row mutually staggers；Scattered color dot in each row it
Between distance it is identical, the spacing distance between two dissipation color dots is also identical；
The scattered color dot by close to one end of LED light source to the other end, its diameter change from small to big after again from large to small；It is each
Scattered color dot diameter in row is identical.
In a preferred embodiment：The pace of change that the diameter of the scattered color dot changes from small to big is less than change from large to small
Speed.
The utility model additionally provides a kind of light guide plate of single-sided illumination, the light guide plate away from light guide plate exiting surface one
Side has scattering point；The side of the light guide plate is provided with LED light source, opposite side on the other side is provided with reflective sheeting；
The scattering point is in array distribution, and the scattering point of adjacent two row mutually staggers；Scattered color dot in each row
Diameter is identical, and the spacing distance between two dissipation color dots is also identical；
Dissipated in each row color dot by close to one end of LED light source to the other end, its density by after more than few change again by tailing off more.
In a preferred embodiment：The density of the scattered color dot is less than the change by tailing off more by the pace of change more than few change
Speed.
In a preferred embodiment：Section of the scattered color dot along horizontal direction be circle, ellipse, square, rectangular
One or two kinds of or a variety of combination in shape, polygon, track type, waveform.
In a preferred embodiment：Side of the light guide plate away from light guide plate exiting surface, there is a circle to be left white region；Institute
State and be left white region outside scattered color dot region.
In a preferred embodiment：One piece of diffuser plate is provided with outside the exiting surface of the light guide plate.
In a preferred embodiment：The setting of the light guide plate dissipates the one side of color dot, and one piece is provided with outside light guide plate instead
Machine-glazed paper.
In a preferred embodiment：The light guide plate two sides vertical with LED light source also are provided with reflective sheeting.
Compared to prior art, the technical solution of the utility model possesses following beneficial effect：
A kind of light guide plate of single-sided illumination provided by the utility model, by adjust on light guide plate the density of scattering point or
Diameter, so that the emitting brightness close to light source side and the emitting brightness away from light source side can be roughly the same,
It is more uniform so as to the brightness ratio of whole light guide plate exiting surface.
Brief description of the drawings
Fig. 1 is the distribution map when cross section of scattered color dot in the utility model preferred embodiment 1 is circle；
Fig. 2 is the distribution map when cross section of scattered color dot in the utility model preferred embodiment 1 is square；
Fig. 3 is the distribution map when cross section of scattered color dot in the utility model preferred embodiment 1 is polygon；
Fig. 4 is the distribution map when cross section of scattered color dot in the utility model preferred embodiment 1 is rectangle；
Fig. 5 is the distribution map when cross section of scattered color dot in the utility model preferred embodiment 1 is track type；
Fig. 6 is the distribution map when cross section of scattered color dot in the utility model preferred embodiment 1 is combination shape；
Fig. 7 is the distribution map that color dot is dissipated in the utility model preferred embodiment 2.
Embodiment
The technical solution of the utility model is further detailed below by way of embodiment combination accompanying drawing and
Description.
, will be in light guide plate after light that LED is sent enters light guide plate from side if there is no scattering point on light guide plate
Upper surface or lower surface occur total reflection and propagated forward, this when light guide plate upper surface or lower surface be all no light
Line outgoing.And the scattering point that light guide plate upper surface is set is the total reflection effect for destroying light, so that light reflects through dissipating color dot
It is emitted afterwards from the lower surface of light guide plate, so the exitance of light has light with scattering point size.Some region of light on light guide plate
Exitance is relevant with the regions scatter dot density, and scattering point is closeer, and the exitance of light is higher.
Embodiment 1
Based on above-mentioned analysis, a kind of light guide plate 1 of single-sided illumination is present embodiments provided, the light guide plate 1 is remote to lead
The side of the exiting surface of tabula rasa 1 has scattering point 11；The side of the light guide plate 1 is provided with LED light source 12, on the other side another
Side is provided with reflective sheeting；
The scattering point 11 is in array distribution, and the scattering point 11 of adjacent two row mutually staggers；Scattered color in each row
Point the distance between 11 is identical, and the spacing distance between two dissipation color dots 11 is also identical；
The scattered color dot 11 by close to one end of LED light source 12 to the other end, its diameter change from small to big after again from large to small；
The diameter of scattered color dot 11 in each row is identical.It is because the light sent with LED light source 12 exists to dissipate the diameter of color dot 11 to change from small to big
Propagated in light guide plate, more remote from LED light source 12, emitting brightness is lower, in order to increase emitting brightness it is necessary to increase scattered color dot 11
Diameter.This makes it possible to make emitting brightness uniform.Dissipate the diameter of color dot 11 increase to after maximum and taper into be because,
Side of the light guide plate 1 away from LED light source 12 is provided with reflective sheeting；So due to the reflection of reflective sheeting, allow near reflective sheeting
Light intensity is relatively also stronger, if the diameter of scattered color dot 11 in the region is also held in maximum, then the light extraction in the region
Brightness will be stronger, and therefore, close to the part of reflective sheeting, dissipating the diameter of color dot 11 needs to diminish.
In the present embodiment, the pace of change that the diameter of the scattered color dot 11 changes from small to big is fast less than change from large to small
Degree.So that the diameter of the scattered color dot 11 of the sub-fraction of only close reflective sheeting is from large to small, and need can be reduced to quickly
The size wanted.And the diameter change in the scattered color dot 11 close to the part of LED light source 12 is than shallower.The reason for so setting
As the emitting brightness of LED light line exit direction reduces and relatively stable, therefore dissipating the diameter change of color dot 11 also phase
It should compare steady.And the light intensity near reflective sheeting is increased suddenly, therefore, it is necessary to quickly reduce the scattered color dot near reflective sheeting
11 diameter.
In the present embodiment, section of the scattered color dot 11 along horizontal direction be circle, ellipse, square, rectangle, more
One or two kinds of or a variety of combination in side shape, track type, waveform.The shape setting for dissipating color dot 11 can be very clever
It is living, as long as the total reflection can of light can be destroyed, it is not limited to which this illustrated in the present embodiment is several.
The side of the light guide plate 1 away from the exiting surface of light guide plate 1, there is a circle to be left white region；The region that is left white is located at
Dissipate outside the region of color dot 11.Peak width 7mm or so is left white, bright border and the raising efficiency of light energy utilization can be prevented by so doing.
In addition, it is provided with one piece of diffuser plate outside the exiting surface of the light guide plate 1.The setting of the light guide plate 1 dissipates color dot 11
One side, one piece of reflective sheeting is provided with outside light guide plate 1.The light guide plate 1 two sides vertical with LED light source 12 also are provided with
Reflective sheeting.
Embodiment 2
In the present embodiment, the utility model additionally provides a kind of light guide plate 1 of single-sided illumination, and the light guide plate 1 is remote to lead
The side of the exiting surface of tabula rasa 1 has scattering point 11；The side of the light guide plate 1 is provided with LED light source 12, on the other side another
Side is provided with reflective sheeting；
The scattering point 11 is in array distribution, and the scattering point 11 of adjacent two row mutually staggers；Scattered color in each row
The diameter of point 11 is identical, and the spacing distance between two dissipation color dots 11 is also identical；
Dissipated in each row color dot 11 by close to one end of LED light source 12 to the other end, its density by after more than few change again by more
Tail off.It is because the light sent with LED light source 12 is propagated in light guide plate, from LED light source mostly to dissipate the density of color dot 11 by few change
12 is more remote, and emitting brightness is lower, in order to increase emitting brightness it is necessary to increase the density of scattered color dot 11.This makes it possible to allow light extraction
Brightness uniformity.It is because of in light guide plate 1 away from LED light source 12 to dissipate the density of color dot 11 to increase to after maximum and taper into
Side be provided with reflective sheeting；So due to the reflection of reflective sheeting, the light intensity allowed near reflective sheeting is relatively also stronger, if
The density of scattered color dot 11 in the region is also held in maximum, then and the emitting brightness in the region will be stronger, therefore,
Close to the part of reflective sheeting, dissipating the density of color dot 11 needs to diminish.
In the present embodiment, the density of the scattered color dot 11 is less than the change speed by tailing off more by the pace of change more than few change
Degree.So that there was only the density of the scattered color dot 11 of the sub-fraction close to reflective sheeting by tailing off, and need can be reduced to quickly more
The density size wanted.And the variable density in the scattered color dot 11 close to the part of LED light source 12 is than shallower.So set
Reason exists, as the emitting brightness of LED light line exit direction reduces and compared variable density that is stable, therefore dissipating color dot 11
Also it is corresponding relatively more steady.And the light intensity near reflective sheeting is increased suddenly, therefore, it is necessary to quickly reduce dissipating near reflective sheeting
The density of color dot 11.
It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model discloses
Change or replacement, should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should
It is defined by scope of the claims.
Claims (9)
- A kind of 1. light guide plate of single-sided illumination, it is characterised in that：Side of the light guide plate away from light guide plate exiting surface, which has, to be dissipated Exit point；The side of the light guide plate is provided with LED light source, opposite side on the other side is provided with reflective sheeting；The scattering point is in array distribution, and the scattering point of adjacent two row mutually staggers；Between scattered color dot in each row Apart from identical, the spacing distance between two dissipation color dots is also identical；The scattered color dot by close to one end of LED light source to the other end, its diameter change from small to big after again from large to small；In each row Scattered color dot diameter it is identical.
- A kind of 2. light guide plate of single-sided illumination according to claim 1, it is characterised in that：The diameter of the scattered color dot is by small The pace of change for becoming big is less than pace of change from large to small.
- A kind of 3. light guide plate of single-sided illumination, it is characterised in that：Side of the light guide plate away from light guide plate exiting surface, which has, to be dissipated Exit point；The side of the light guide plate is provided with LED light source, opposite side on the other side is provided with reflective sheeting；The scattering point is in array distribution, and the scattering point of adjacent two row mutually staggers；The diameter of scattered color dot in each row Identical, the spacing distance between two dissipation color dots is also identical；Dissipated in each row color dot by close to one end of LED light source to the other end, its density by after more than few change again by tailing off more.
- A kind of 4. light guide plate of single-sided illumination according to claim 3, it is characterised in that：The density of the scattered color dot is by few The pace of change for becoming more is less than the pace of change by tailing off more.
- A kind of 5. light guide plate of single-sided illumination according to any one of claim 1-4, it is characterised in that：The scattered color dot Along the section of horizontal direction be circle, one kind in ellipse, square, rectangle, polygon, track type, waveform or Two kinds or more of combinations.
- A kind of 6. light guide plate of single-sided illumination according to claim 5, it is characterised in that：The light guide plate is away from light guide plate The side of exiting surface, there is a circle to be left white region；The region that is left white is located at outside scattered color dot region.
- A kind of 7. light guide plate of single-sided illumination according to claim 5, it is characterised in that：Outside the exiting surface of the light guide plate It is provided with one piece of diffuser plate.
- A kind of 8. light guide plate of single-sided illumination according to claim 5, it is characterised in that：The setting of the light guide plate dissipates color The one side of point, is provided with one piece of reflective sheeting outside light guide plate.
- A kind of 9. light guide plate of single-sided illumination according to claim 5, it is characterised in that：The light guide plate and LED light source Two vertical sides also are provided with reflective sheeting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721042242.2U CN207198365U (en) | 2017-08-18 | 2017-08-18 | A kind of light guide plate of single-sided illumination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721042242.2U CN207198365U (en) | 2017-08-18 | 2017-08-18 | A kind of light guide plate of single-sided illumination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207198365U true CN207198365U (en) | 2018-04-06 |
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ID=61794417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721042242.2U Active CN207198365U (en) | 2017-08-18 | 2017-08-18 | A kind of light guide plate of single-sided illumination |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617504A (en) * | 2018-06-20 | 2019-12-27 | 佛山市顺德区美的电热电器制造有限公司 | Cooking device |
| CN114721082A (en) * | 2022-04-24 | 2022-07-08 | 业成科技（成都）有限公司 | Backlight module and display device |
-
2017
- 2017-08-18 CN CN201721042242.2U patent/CN207198365U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617504A (en) * | 2018-06-20 | 2019-12-27 | 佛山市顺德区美的电热电器制造有限公司 | Cooking device |
| CN110617504B (en) * | 2018-06-20 | 2021-08-27 | 佛山市顺德区美的电热电器制造有限公司 | Cooking device |
| CN114721082A (en) * | 2022-04-24 | 2022-07-08 | 业成科技（成都）有限公司 | Backlight module and display device |
| CN114721082B (en) * | 2022-04-24 | 2023-07-04 | 业成科技（成都）有限公司 | Backlight module and display device |
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