CN204855852U - Trapezoidal light guide plate - Google Patents
Trapezoidal light guide plate Download PDFInfo
- Publication number
- CN204855852U CN204855852U CN201520627906.6U CN201520627906U CN204855852U CN 204855852 U CN204855852 U CN 204855852U CN 201520627906 U CN201520627906 U CN 201520627906U CN 204855852 U CN204855852 U CN 204855852U
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- CN
- China
- Prior art keywords
- guide plate
- light guide
- light
- plain noodles
- plate body
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- Expired - Fee Related
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Abstract
The utility model discloses a trapezoidal light guide plate, including glass light guide plate body, the shape of glass light guide plate body is right trapezoid, glass light guide plate body has into the plain noodles, goes out plain noodles and plane of reflection, go into the plain noodles and go out the plain noodles perpendicularly, go into the plain noodles and personally submit acute angle contained angle state with the reflection, it is provided with the recess that is used for placing LED lamp strip to go into the plain noodles, be stained with transparent film on the plane of reflection, the printing had a plurality of leaded light points on transparent film was close to the side on plain noodles, transparent film keeps away from out and is stained with the reflectance coating on the side on plain noodles. The beneficial effects of the utility model are that: improve the processing procedure yield, increased luminance, improved the utilization ratio of light.
Description
Technical field
The utility model relates to LED display light guide plate technical field, refers in particular to a kind of trapezoidal light guide plate.
Background technology
In backlight assembly, light guide plate is crucial optical element, by various density, light guiding points not of uniform size, can make light guide plate uniformly light-emitting.The purposes of reflector plate is that the light exposed bottom surface is reflected back in light guide plate, is used for improving the service efficiency of light.But due to the diversity of LED light source, make its luminous utilization factor not high, especially for the light guide plate of large-size, the utilization factor of light is low causes light guide plate luminance low and uneven.
Moreover, existing LED light guide plate, LED light source is placed on two sides or four sides of light guide plate, light beam is made to enter in light guide plate, the material of light guide plate is the acrylic/PC sheet material of optical grade, then with there is high reflectivity and the hitech materials of not extinction, light guiding points is stamped at the acryl plates bottom surface UV screen printing technology of optical grade, optical grade acryl plates is utilized to draw the stop of light on optical grade acryl plates surface sent from lamp, when light is mapped to each light guiding points, reflected light can toward all angles diffusion, then destroy conditioned reflex to be penetrated by light guide plate front, by various density, light guiding points not of uniform size, light guide plate uniformly light-emitting can be made.Such mode Problems existing is: (one) is owing to being placed on two sides or four sides of light guide plate by LED light source, prior art is that the lamp bar width of LED light source is greater than light guide plate, part light can not enter in light guide plate, cause the loss of some light, thus cause light efficiency lower; (2) light guiding points in the light guide plate of prior art is directly printed on the bottom surface of light guide plate, and this technique is very difficult in practical operation, and yield is lower, and therefore cost is high.
Summary of the invention
In order to overcome above-mentioned defect, the utility model provides a kind of trapezoidal light guide plate.
The technical solution adopted in the utility model is: a kind of trapezoidal light guide plate, comprise glass light guide plate body, the shape of described glass light guide plate body is right-angled trapezium, described glass light guide plate body has incidence surface, exiting surface and reflecting surface, described incidence surface is vertical with exiting surface, and the angle of described incidence surface and reflecting surface is acute angle; Described incidence surface is provided with the groove for placing LED lamp bar; Described reflecting surface is stained with hyaline membrane, and described hyaline membrane is printed with some light guiding points on the side of the side of exiting surface, and the side away from the side of exiting surface is stained with reflectance coating to described hyaline membrane.
Described incidence surface is provided with semi-transparent semi-reflecting rete.
The beneficial effects of the utility model are: (one) the utility model is first printed on hyaline membrane by light guiding points, and then the hyaline membrane being printed with light guiding points is combined with glass light guide plate body, thus formation light guide plate, because light guiding points is printed on hyaline membrane, therefore be directly printed on glass light guide plate body will easilier realize than prior art, improve process rate; (2) groove being used for placing LED lamp bar is set at the incidence surface of glass light guide plate body, make the more multiple beam of LED lamp bar enter glass light guide plate body, because the light beam entering glass light guide plate body increases, its light of deriving also increases, thus brightness is increased, light efficiency gets a promotion; (3) incidence surface is provided with semi-transparent semi-reflecting rete, make incidence surface can not only the light that sends of regular transmission LED lamp bar, and described semi-transparent semi-reflecting rete reflecting part light can be utilized, by the light of described semi-transparent semi-reflecting rete reflection after described reflecting surface again secondary reflection, inject described incidence surface, and the region that the incident light can injecting LED lamp bar does not cover, prevents dark space, improve the uniformity coefficient of light guide plate luminance.(4) shape of described glass light guide plate body is right-angled trapezium, its reflecting surface changes the angle of light guide plate inner total reflection light, reduce the angle of bottom reflection light, reduce the people firing angle of light reflection to light guide plate surface on the one hand, make to reflect light more close to normal direction, make on the other hand originally that this part light that is that can not reflect away from light guide plate surface can reflect away in light guide plate surface because the angle of reflected light is excessive, thus the utilization factor of raising light and brightness.
Accompanying drawing illustrates:
Fig. 1 is side view of the present utility model.
Embodiment:
With reference to Fig. 1, a kind of trapezoidal light guide plate, comprise glass light guide plate body 1, the shape of described glass light guide plate body 1 is right-angled trapezium, described glass light guide plate body 1 has incidence surface 11, exiting surface 13 and reflecting surface 12, described incidence surface 11 is vertical with exiting surface 13, and described incidence surface 11 is acute angle with the angle of reflecting surface 12; Described incidence surface 11 is provided with the groove 2 for placing LED lamp bar; Described reflecting surface 12 is stained with hyaline membrane 3, and described hyaline membrane 3 is printed with some light guiding points 31 on the side of the side of exiting surface 13, and the side away from the side of exiting surface 13 is stained with reflectance coating 4 to described hyaline membrane 3.
Described incidence surface 11 is provided with semi-transparent semi-reflecting rete 5.
Described incidence surface 11 is provided with for placing the groove 2 of LED lamp bar, make LED lamp bar more multiple beam enter glass light guide plate body 1, because the light beam entering glass light guide plate body 1 increases, its light of deriving also increases, thus brightness is increased, and light efficiency gets a promotion.
Light guiding points 31 is first printed on hyaline membrane 3, and then the hyaline membrane 3 being printed with light guiding points 31 is combined with glass light guide plate body 1, thus formation light guide plate, because light guiding points 31 is printed on hyaline membrane 3, be therefore directly printed on glass light guide plate body will easilier realize than prior art, improve process rate, even if there is bad scrapping, also only need to scrap hyaline membrane part, and glass light guide plate body stands intact, therefore, it is possible to reduce costs.
Incidence surface is provided with semi-transparent semi-reflecting rete 5, make incidence surface can not only the light that sends of regular transmission LED lamp bar, and described semi-transparent semi-reflecting rete 5 reflecting part light can be utilized, the light reflected by described semi-transparent semi-reflecting rete 5 is after described reflecting surface 12 again secondary reflection, inject described incidence surface 11, and the region that the incident light can injecting LED lamp bar does not cover, prevents dark space, improve the uniformity coefficient of light guide plate luminance.
The shape of described glass light guide plate body 1 is right-angled trapezium, its reflecting surface 12 changes the angle of glass light guide plate body inner total reflection light, reduce the angle of bottom reflection light, reduce the people firing angle of light reflection to glass light guide plate body surface on the one hand, make to reflect light more close to normal direction, make on the other hand originally that this part light that is that can not reflect away from glass light guide plate body surface can reflect away in light guide plate surface because the angle of reflected light is excessive, thus the utilization factor of raising light and brightness.
Above-described embodiment is only display and describes ultimate principle of the present utility model, principal character and advantage.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.
Claims (2)
1. a trapezoidal light guide plate, comprise glass light guide plate body (1), it is characterized in that: the shape of described glass light guide plate body (1) is right-angled trapezium, described glass light guide plate body (1) has incidence surface (11), exiting surface (13) and reflecting surface (12), described incidence surface (11) is vertical with exiting surface (13), and described incidence surface (11) is acute angle with the angle of reflecting surface (12); Described incidence surface (11) is provided with the groove (2) for placing LED lamp bar; Described reflecting surface (12) is stained with hyaline membrane (3), described hyaline membrane (3) is printed with some light guiding points (31) on the side of the side of exiting surface (13), and the side away from the side of exiting surface (13) is stained with reflectance coating (4) to described hyaline membrane (3).
2. a kind of trapezoidal light guide plate as claimed in claim 1, is characterized in that: described incidence surface (11) is provided with semi-transparent semi-reflecting rete (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520627906.6U CN204855852U (en) | 2015-08-19 | 2015-08-19 | Trapezoidal light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520627906.6U CN204855852U (en) | 2015-08-19 | 2015-08-19 | Trapezoidal light guide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204855852U true CN204855852U (en) | 2015-12-09 |
Family
ID=54746388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520627906.6U Expired - Fee Related CN204855852U (en) | 2015-08-19 | 2015-08-19 | Trapezoidal light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204855852U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017133129A1 (en) * | 2016-02-03 | 2017-08-10 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN107644601A (en) * | 2016-07-22 | 2018-01-30 | 日立空调·家用电器株式会社 | Display device and the refrigerator for possessing the display device |
| CN108897090A (en) * | 2018-05-25 | 2018-11-27 | 深圳创维－Rgb电子有限公司 | A kind of light guide plate, liquid crystal module and display equipment |
| CN114442374A (en) * | 2022-02-18 | 2022-05-06 | 深圳市日普科技有限公司 | Backlight module with diffraction optical element |
-
2015
- 2015-08-19 CN CN201520627906.6U patent/CN204855852U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017133129A1 (en) * | 2016-02-03 | 2017-08-10 | 京东方科技集团股份有限公司 | Backlight module and display device |
| US10310325B2 (en) | 2016-02-03 | 2019-06-04 | Boe Technology Group Co., Ltd. | Backlight module and display device |
| CN107644601A (en) * | 2016-07-22 | 2018-01-30 | 日立空调·家用电器株式会社 | Display device and the refrigerator for possessing the display device |
| CN108897090A (en) * | 2018-05-25 | 2018-11-27 | 深圳创维－Rgb电子有限公司 | A kind of light guide plate, liquid crystal module and display equipment |
| CN114442374A (en) * | 2022-02-18 | 2022-05-06 | 深圳市日普科技有限公司 | Backlight module with diffraction optical element |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20180819 |