CN204650102U - A kind of LCD backlight source - Google Patents
A kind of LCD backlight source Download PDFInfo
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- CN204650102U CN204650102U CN201520245674.8U CN201520245674U CN204650102U CN 204650102 U CN204650102 U CN 204650102U CN 201520245674 U CN201520245674 U CN 201520245674U CN 204650102 U CN204650102 U CN 204650102U
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Abstract
A kind of LCD backlight source, comprise lamp source, light dielectric-slab, reflectance coating and blooming, blooming is positioned at the upper front of light dielectric-slab, reflectance coating is positioned at the lower rear of light dielectric-slab, also reflector element is provided with, outgoing beam incident described smooth dielectric-slab after reflector element reflection in described lamp source between described lamp source and light dielectric-slab.The utility model provides a kind of light path that can increase between lamp source and light dielectric-slab and makes the well-mixed backlight of emission of light; Expanding light path by increasing reflector element in the optical path, effectively controlling the volume of backlight; It is simple that the utility model backlight also has structure, the feature that manufacture difficulty is little.
Description
Technical field
The utility model relates to back light source technique field, particularly a kind of backlight for liquid crystal display.
Background technology
Liquid crystal display is primarily of liquid crystal panel (Liquid Crystal Display, LCD) and backlight composition.Liquid crystal molecule itself is not luminous, so need external light source to realize transmission or reflective display, the characteristic of backlight determines the important optical parametric of the picture taste, colourity, colour gamut etc. of liquid crystal display, and plays the supporting role of whole liquid crystal module.Backlight has the type such as cold-cathode fluorescence lamp and light emitting diode (Light-Emitting Diode, LED).Because LED has the features such as brightness is high, the life-span long, luminescence is even, current most backlight uses the LED back of the body as lamp source.
Common LED lamp source is distributed in by the LED of single the line source that PCB forms discretely, certain interval is had between adjacent LED, and the light due to LED has certain dispersion angle, there will be light and dark striped when the coupling light of LED is in light guide plate or on incident diffuser plate, be referred to as Hotspot phenomenon.One of the method solving Hotspot increases the distance between LED and light guide plate or diffuser plate, the emission of light of adjacent LED can fully be mixed, but usual this mode can increase the width of side-edge type backlight side, or increase the thickness of back of the body directly-down light source entirety.Obtaining a kind ofly the backlight of effective controlling dimension can become a technical matters urgently to be resolved hurrily again increasing while light mixing distance.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provide a kind of can fully mixed light and the backlight of small volume.
In order to solve the problems of the technologies described above, the technical solution of the utility model is:
A kind of LCD backlight source, comprise lamp source, light dielectric-slab, reflectance coating and blooming, blooming is positioned at the upper front of light dielectric-slab, reflectance coating is positioned at the lower rear of light dielectric-slab, also reflector element is provided with, outgoing beam incident described smooth dielectric-slab after reflector element reflection in described lamp source between described lamp source and light dielectric-slab.
Preferably, described lamp source is LED or lasing light emitter.
Preferably, described smooth dielectric-slab is light guide plate, and the outgoing beam in described lamp source is from light guide plate incident sideways.
Preferably, the emergent light self-diffusion back in described lamp source is incident.
Preferably, described reflector element is catoptron or triangular prism.
Preferably, described reflector element is made up of multiple catoptron, the outgoing beam in described lamp source in reflector element after multiple reflections incident light dielectric-slab.
The beneficial effects of the utility model are, provide a kind of light path that can increase between lamp source and light dielectric-slab and make the well-mixed backlight of emission of light; Expanding light path by increasing reflector element in the optical path, effectively controlling the volume of backlight; Meanwhile, the utility model back light source structure is simple, and manufacture difficulty is less.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment 1 side-edge type backlight;
Fig. 2 is the structural representation of the utility model embodiment 2 side-edge type backlight;
Fig. 3 is the structural representation of the utility model embodiment 3 side-edge type backlight;
Fig. 4 is the structural representation of the utility model embodiment 4 direct-light-type backlight.
Wherein:
1. lamp source; 2. reflector element; 21. first catoptrons; 22. second catoptrons; 3. smooth dielectric-slab; 4. reflectance coating; 5. blooming; 6. outgoing beam; 7. incident beam.
Embodiment
The utility model is described further by embodiment below in conjunction with accompanying drawing, to understand the utility model better.
Embodiment 1
As shown in Figure 1, lamp source 1 is LED, and reflector element 2 is catoptron, and light dielectric-slab 3 is light guide plate.The outgoing beam 6 that lamp source 1 sends enters reflector element 2, changes direction form incident beam 7 by reflector element 2; Incident beam 7 enters light dielectric-slab 3, finally under the effect of reflectance coating 4 by blooming 5 one side outgoing.Distance between lamp source 1 and reflector element 2 is d1, and the distance between reflector element 2 and light dielectric-slab 3 is d2.When not increasing d2, increase light mixing distance by increasing d1.
When reflector element 2 is catoptron, the angle of catoptron and horizontal direction is 10-80 degree, and outgoing beam 6 is 10-80 degree with the angle of catoptron normal direction.In the present embodiment, the angle of catoptron and horizontal direction is 45 degree, and outgoing beam 6 is 45 degree with the angle of reflector element 2 normal direction.
Embodiment 2
As shown in Figure 2, lamp source 1 is LED, and reflector element 2 is two catoptrons, and light dielectric-slab 3 is light guide plate; First catoptron 21 and the second catoptron 22 are 45 degree with the angle of horizontal direction, and the angle of outgoing beam 6 and the first catoptron 21 normal direction is 45 degree.Outgoing beam 6 successively changes direction through the first catoptron 21 and the second catoptron 22, forms incident beam 7 and enters light dielectric-slab 3.Distance between lamp source 1 and the first catoptron 21 is d1, and the distance between two catoptrons is d2, and the distance between the second catoptron 22 and light dielectric-slab 3 is d3.When not changing d3, light mixing distance can be increased by increasing d1 and d2.Owing to employing two reflective mirrors, in limited space, make light path longer, further enhance light mixing effect.
Embodiment 3
As shown in Figure 3, lamp source 1 is LED, and reflector element 2 is triangular prism, and light dielectric-slab 3 is light guide plate; The triangular prism used is glass material, and refractive index is 1.51, two sharp angle is 45 degree.During outgoing beam 6 triangular prism incident perpendicular to bottom surface with horizontal direction, light beam is totally reflected two of prism orthogonal sides successively, changes direction formation incident beam 7 by total reflection.Distance between lamp source 1 and reflector element 2 is d1, and the distance at the upper and lower two ends of reflector element 2 triangular prism is d2, and the distance between reflector element 2 and light dielectric-slab 3 is d3.When not changing d2, d3, increase light mixing distance by increasing d1.
Embodiment 4
As shown in Figure 4, in the present embodiment, lamp source 1 is LED, and reflector element 2 is catoptron, and light dielectric-slab 3 is diffuser plate.Distance between lamp source 1 and reflector element 2 is d1, and the distance between reflector element 2 and light dielectric-slab 3 is d2.The angle of reflector element 2 catoptron and horizontal direction is 45 degree, and outgoing beam 6 is 45 degree with the angle of reflector element 2 normal direction.
Many compared to common downward back photo structure d1, so light mixing distance increases to some extent.Suitably can reduce d2 like this, thus reduce the thickness of direct-light-type backlight; Or do not reduce d2, reduce the quantity in lamp source 1, thus reduce costs.
Should understand; above-described embodiment is only for illustrating technical conceive of the present utility model and feature; its object is to understand content of the present utility model for those skilled in the art and implement according to this, not embodiment is exhaustive, can not limit protection domain of the present utility model with this.Allly modify according to technical scheme of the present utility model or equivalent to replace, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (6)
1. a LCD backlight source, comprise lamp source, light dielectric-slab, reflectance coating and blooming, blooming is positioned at the upper front of light dielectric-slab, reflectance coating is positioned at the lower rear of light dielectric-slab, it is characterized in that: between described lamp source and light dielectric-slab, be provided with reflector element, outgoing beam incident described smooth dielectric-slab after reflector element reflection in described lamp source.
2. LCD backlight source according to claim 1, is characterized in that: described lamp source is LED or lasing light emitter.
3. LCD backlight source according to claim 1, is characterized in that: described smooth dielectric-slab is light guide plate, and the outgoing beam in described lamp source is from light guide plate incident sideways.
4. LCD backlight source according to claim 1, is characterized in that: described smooth dielectric-slab is diffuser plate, and the emergent light self-diffusion back in described lamp source is incident.
5. the LCD backlight source according to any one of Claims 1-4, is characterized in that: described reflector element is catoptron or triangular prism.
6. LCD backlight source according to claim 5, is characterized in that: described reflector element is made up of multiple catoptron, the outgoing beam in described lamp source in reflector element after multiple reflections incident light dielectric-slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520245674.8U CN204650102U (en) | 2015-04-22 | 2015-04-22 | A kind of LCD backlight source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520245674.8U CN204650102U (en) | 2015-04-22 | 2015-04-22 | A kind of LCD backlight source |
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| Publication Number | Publication Date |
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| CN204650102U true CN204650102U (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520245674.8U Active CN204650102U (en) | 2015-04-22 | 2015-04-22 | A kind of LCD backlight source |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302381A (en) * | 2017-01-13 | 2018-07-20 | 矽创电子股份有限公司 | Back lighting device |
| CN111081168A (en) * | 2018-10-19 | 2020-04-28 | 致伸科技股份有限公司 | Display device |
-
2015
- 2015-04-22 CN CN201520245674.8U patent/CN204650102U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302381A (en) * | 2017-01-13 | 2018-07-20 | 矽创电子股份有限公司 | Back lighting device |
| US10754155B2 (en) | 2017-01-13 | 2020-08-25 | Sitronix Technology Corp. | Backlight device |
| CN111081168A (en) * | 2018-10-19 | 2020-04-28 | 致伸科技股份有限公司 | Display device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210308 Address after: 210038 A building, Longgang science and Technology Park, Heng Yuan Road, Nanjing economic and Technological Development Zone, Jiangsu Patentee after: NANJING INSTITUTE OF ADVANCED LASER TECHNOLOGY Patentee after: NANJING ZHONGKE SHENGUANG TECHNOLOGY Co.,Ltd. Address before: No.18, Xinghe Road, Nanjing Economic and Technological Development Zone, Jiangsu Province, 210038 Patentee before: NANJING ZHONGKE SHENGUANG TECHNOLOGY Co.,Ltd. |