CN103090313A - Light guide plate capable of improving light-emitting diode (LED) lamp incidence light efficiency - Google Patents
Light guide plate capable of improving light-emitting diode (LED) lamp incidence light efficiency Download PDFInfo
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- CN103090313A CN103090313A CN2011103477254A CN201110347725A CN103090313A CN 103090313 A CN103090313 A CN 103090313A CN 2011103477254 A CN2011103477254 A CN 2011103477254A CN 201110347725 A CN201110347725 A CN 201110347725A CN 103090313 A CN103090313 A CN 103090313A
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Abstract
The invention provides a light guide plate capable of improving light-emitting diode (LED) lamp incidence light efficiency. The thickness of an incidence light side of the light guide plate is larger than that of a light emerging side, and the incidence light side and the light emerging side are in transition through an inclined face with a reflecting plate. Due to the fact that the thickness of the incidence light side of the light guide plate is larger than that of the light emerging side and the incidence light side and the light emerging side are in transition through the inclined face with the reflecting plate, under the condition of reducing the thickness of the light guide plate and cost, high LED lamp incidence light efficiency can be kept. The light guide plate is injection-molded, the light guide plate and light guide points on the light guide plate are once molded, and manufacture cost of the light guide plate can be further reduced.
Description
Technical field
The present invention relates to the LGP technical field, relate in particular to the LGP that a kind of LED of raising lamp enters optical efficiency.
Background technology
As shown in Figure 1, be LGP 11 in the middle of single-sided illumination formula LED-backlit module at present, its periphery is LED lamp bar 30, LED lamp (LED lamp not shown in the figures, represent LED lamp light-emitting line with arrow) be evenly arranged on LED lamp bar, the side of LGP 11 and bottom surface are provided with reflector plate 13, and the purposes of reflector plate is the light that bottom surface of light guide plate exposes is reflected back in LGP, the light that the reflector plate of side exposes the side is reflected back in LGP, to improve the service efficiency of light.
Wherein, LGP 11 be PMMA/PC take optical grade as base material, stamp light guiding points at bottom surface of light guide plate with the UV screen printing technology or adopt radium-shine technology etching light guiding points.The light that the LED lamp sends enters in LGP 11 by downside.Because the refractive index of PMMA sheet material is very high, total reflection when being mapped to plate surface, the LED lamp wiring occurs, and when light was mapped to light guiding points on each LGP, then reverberation can destroy total reflection condition toward all angles diffusion, is penetrated by the front of LGP 11.So, by various densitys, light guiding points not of uniform size, make LGP luminous evenly.
Continuous slimming along with display device, and the demand that reduces costs, the thickness of LGP was thinned to present 3.0mm by former 4.0mm at present, and the model LED lamps such as 5630,6030,7030 are all 3.0mm broadside lamp, as shown in Figure 2,3.0mm the broadside lighting angle of broadside LED lamp 31 is 120 degree, LED lamp 14 is to the have an appointment spacing of 1.0mm of LGP 11, when the LGP of 3.0mm thickness collocation broadside is the LED lamp of 3.0mm like this, has up and down a large amount of light and directly shoot out and do not enter LGP.So under equal conditions, broadside is that the LGP of the LED lamp collocation 3.0mm thickness of 3.0mm enters optical efficiency than the LGP of collocation 4.0mm thickness and approximately has 10% to descend.Therefore, although the light guide plate attenuate, cost,, LGP is the light inlet Efficiency Decreasing not only, but also can cause that the light leakage phenomena such as firefly phenomenon and light inlet side bright border occur.
Summary of the invention
For this reason, technical problem to be solved by this invention is: provide a kind of LED of raising lamp to enter the LGP of optical efficiency, make its not only reduced thickness, but also can keep the higher optical efficiency that enters.
So, the invention provides the LGP that a kind of LED of raising lamp enters optical efficiency, the thickness of this LGP light inlet side is greater than the thickness of bright dipping side, and light inlet side and bright dipping side are with an inclined plane transition that is provided with reflector plate.
Wherein, LGP light inlet side thickness all incides in LGP as suitable depth take the LED lamp ejaculation light on its peripheral LED lamp bar.
Described LGP light inlet side thickness is 4.0mm.
Described LGP bright dipping side thickness is 2.0mm.
Described inclined plane and horizontal direction angle are 150 °.
Described LGP is ejection formation.
Described LGP sheet material and the light guiding points on it are printing or radium-shine technology moulding.
The LED of raising lamp of the present invention enters the LGP of optical efficiency, thickness by making LGP light inlet side is greater than the thickness of bright dipping side, light inlet side and bright dipping side are provided with the inclined plane of reflector plate as transition with one, make in the attenuate light guide plate, in situation about reducing costs, can also keep higher LED lamp to enter optical efficiency.
LGP is ejection formation by making, and to make the light guiding points on LGP sheet material and its be one-shot forming, can further reduce the LGP manufacturing cost.
Description of drawings
Fig. 1 is single-sided illumination LED-backlit modular structure schematic diagram in prior art;
Fig. 2 is the optical schematic diagram between LGP and LED lamp in LED-backlit template shown in Figure 1;
Fig. 3 is the optical schematic diagram between the described LGP of the embodiment of the present invention and LED lamp.
The specific embodiment
Below, describe the present invention by reference to the accompanying drawings.
As shown in Figure 2, the present embodiment provides a kind of LED of raising lamp to enter the LGP 21 of optical efficiency, the thickness of the light inlet side 22 of this LGP 21 is greater than the thickness of bright dipping side 23, be that an inclined plane 24 is as transition between light inlet side 22 and bright dipping side 23, be provided with reflector plate on inclined plane 24, penetrate from here to prevent light.
The thickness of above-mentioned light inlet side 22 is greater than the thickness of bright dipping side 23, its benefit is: the light inlet side increases thickness can ensure that the LED lamp 31 ejaculation light on LGP peripheral LED lamp bar as much as possible all incide in LGP 21, make in the situation that guarantee to improve LGP to enter optical efficiency, can also reduce the LGP manufacturing cost by the mode with LGP bright dipping side attenuate.
Wherein, the thickness of LGP light inlet side 22 all incides in LGP 21 as suitable depth take the LED lamp 31 ejaculation light on its peripheral LED lamp bar.Take in the market model LED lamps such as 5630,6030,7030 as example, LED lamp broadside is 3.0mm, its lighting angle is 120 °, so, the light inlet side thickness of LGP 21 should be more suitable for 4.0mm, the thickness of bright dipping side 23 can be thinned to 2.0mm, and is even thinner, and inclined plane 24 is 150 ° with the horizontal direction angle.Here, inclined plane 24 is 150 ° with the horizontal direction angle, but is not limited to 150 °.
As shown in Figure 3, LGP 21 exiting surface 23 parts in single-sided illumination mode LED-backlit module adopt the even thinner thickness of 2.0mm, light inlet side 22 is carried out suitable thickening processing reach 4.0mm, difference in thickness is by 30 ° of slope transition, simultaneously 24 places stick on reflector plate and penetrate from here to prevent light on the inclined plane, the central shaft of the corresponding LGP 21 light incident sides 4.0mm of place of the central shaft of LED etc. 31.So, when the higher LED lamp 5630,6030 of collocation light efficiency, when the model broadsides such as 7030 are the 3.0mmLED lamp, at attenuate tabula rasa thickness, in the situation of cost, still can keep the higher optical efficiency that enters.Thereby make the LED liquid crystal module thinner, cost is lower.
Because LGP light inlet side and bright dipping side part variable thickness cause, so LGP should adopt ejection forming technique, and LGP sheet material and the light guiding points one-shot forming on it can further reduce the LGP manufacturing cost.Due to LGP ejection forming technique and sheet material and on the light guiding points one-shaping technique be all prior art, therefore be not described in detail in the present embodiment.
In sum, the described LED of the raising lamp of the present embodiment enters the LGP of optical efficiency, thickness by making LGP light inlet side is greater than the thickness of bright dipping side, light inlet side and bright dipping side are provided with the inclined plane of reflector plate as transition with one, make in the attenuate light guide plate, in situation about reducing costs, can also keep higher LED lamp to enter optical efficiency.
LGP is ejection formation by making, and to make the light guiding points on LGP sheet material and its be one-shot forming, can further reduce the LGP manufacturing cost.
The above is only preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. one kind can be improved the LGP that the LED lamp enters optical efficiency, it is characterized in that, the thickness of this LGP light inlet side is greater than the thickness of bright dipping side, and light inlet side and bright dipping side are with an inclined plane transition that is provided with reflector plate.
2. LGP according to claim 1, is characterized in that, LGP light inlet side thickness penetrates light take the LED lamp on its peripheral LED lamp bar and all incides in LGP as suitable depth.
3. LGP according to claim 2, is characterized in that, described LGP light inlet side thickness is 4.0mm.
4. the described LGP of according to claim 1 to 3 any one, is characterized in that, described LGP bright dipping side thickness is 2.0mm.
5. the described LGP of according to claim 1 to 3 any one, is characterized in that, described inclined plane and horizontal direction angle are 150 °.
6. the described LGP of according to claim 1 to 3 any one, is characterized in that, described LGP is ejection formation.
7. LGP according to claim 6, is characterized in that, described LGP sheet material and the light guiding points on it are printing or radium-shine technology moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103477254A CN103090313A (en) | 2011-11-07 | 2011-11-07 | Light guide plate capable of improving light-emitting diode (LED) lamp incidence light efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103477254A CN103090313A (en) | 2011-11-07 | 2011-11-07 | Light guide plate capable of improving light-emitting diode (LED) lamp incidence light efficiency |
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| CN103090313A true CN103090313A (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103477254A Pending CN103090313A (en) | 2011-11-07 | 2011-11-07 | Light guide plate capable of improving light-emitting diode (LED) lamp incidence light efficiency |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110208898A (en) * | 2019-05-31 | 2019-09-06 | 绍兴上虞威拓机械电子有限公司 | Backlight module high photosynthetic efficiency end face light guide plate and its preparation process |
| CN114001285A (en) * | 2021-10-29 | 2022-02-01 | 深圳市海洋王照明工程有限公司 | Side-emitting flat lamp and assembly method |
Citations (4)
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| CN2731497Y (en) * | 2004-08-05 | 2005-10-05 | 西安海晶光电科技有限公司 | Superthin liquid crystal module back-light source |
| CN101226259A (en) * | 2007-01-16 | 2008-07-23 | 财团法人工业技术研究院 | Coupling light element |
| CN101243355A (en) * | 2005-08-26 | 2008-08-13 | 国立大学法人东北大学 | Liquid crystal display and light guide plate |
| TW201131121A (en) * | 2009-12-28 | 2011-09-16 | Zeon Corp | Surface light source apparatus and liquid crystal display device |
-
2011
- 2011-11-07 CN CN2011103477254A patent/CN103090313A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2731497Y (en) * | 2004-08-05 | 2005-10-05 | 西安海晶光电科技有限公司 | Superthin liquid crystal module back-light source |
| CN101243355A (en) * | 2005-08-26 | 2008-08-13 | 国立大学法人东北大学 | Liquid crystal display and light guide plate |
| CN101226259A (en) * | 2007-01-16 | 2008-07-23 | 财团法人工业技术研究院 | Coupling light element |
| TW201131121A (en) * | 2009-12-28 | 2011-09-16 | Zeon Corp | Surface light source apparatus and liquid crystal display device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110208898A (en) * | 2019-05-31 | 2019-09-06 | 绍兴上虞威拓机械电子有限公司 | Backlight module high photosynthetic efficiency end face light guide plate and its preparation process |
| CN114001285A (en) * | 2021-10-29 | 2022-02-01 | 深圳市海洋王照明工程有限公司 | Side-emitting flat lamp and assembly method |
| CN114001285B (en) * | 2021-10-29 | 2024-04-05 | 深圳市海洋王照明工程有限公司 | Side-emitting flat lamp and assembly method |
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Application publication date: 20130508 |