CN103115282A - Backlight module and diffusion component applied to backlight module - Google Patents
Backlight module and diffusion component applied to backlight module Download PDFInfo
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- CN103115282A CN103115282A CN2011103624766A CN201110362476A CN103115282A CN 103115282 A CN103115282 A CN 103115282A CN 2011103624766 A CN2011103624766 A CN 2011103624766A CN 201110362476 A CN201110362476 A CN 201110362476A CN 103115282 A CN103115282 A CN 103115282A
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- backlight module
- diffuser plate
- pervasion component
- fluorescent coating
- reflecting member
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Abstract
The invention discloses a backlight module which comprises at least one illuminating device, a reflection component and a diffusion component. The reflection component and the diffusion component are oppositely arranged. The illuminating device is arranged between the reflection component and the diffusion component. The diffusion component comprises a diffusion plate and a first fluorescent powder coating coated on the diffusion plate. Consequently, the backlight module is uniform in mixed light and low in manufacturing cost.
Description
Technical field
The present invention relates to the backlight lighting field, relate in particular to a kind of backlight module and be used for pervasion component on the backlight module.
Background technology
Backlight is in field extensive application such as liquid crystal display (LCD), advertising lamp box, indoor and outdoor lighting.Place the difference in orientation according to light source, backlight can be divided into straight-down negative and side-mounted two types.
Direct-light-type backlight is also referred to as direct-lit backlight, and light source is placed on the below of liquid crystal panel, pervasion component or lamp house cloth, direct illumination.Light penetrates through the reflector reflection from light source such as fluorescent tube, light emitting diode (LED) etc., upwards penetrates from the front behind pervasion component, illuminates target with the form of area source.Because the light source accommodation space is larger, can use the more light source of number according to the size of backlight.Its advantage is that high brightness, visual angle are good, light utilization efficiency is relatively high, simple in structure etc., but has vertically thick, the shortcomings such as size is large, difficult mixed light of system, therefore is mainly used in the less demanding LCD TV of compactedness, thicker advertising lamp box and ceiling light.
Side-mounted backlight, light source place a side of LGP, be adjusted to the targets such as liquid crystal panel by LGP Uniform Illumination is provided.The micro structure array that LGP utilizes its bottom surface is converted to spot light or the line source of incident from the area source of LGP upper surface outgoing, then finally illuminates the targets such as liquid crystal panel, lamp house cloth through the acting in conjunction of other optics.This type of backlight is widely used in the liquid crystal display of small-medium size, such as mobile phone, notebook computer, Vehicular display device, Ultrathin advertisement lamp house etc.This backlight is relatively thin.LGP is that weight is larger in this type of backlight, the important spare part that cost is higher, and the processing and fabricating program is complicated, and is dumb.Because the LGP refractive index is higher, when adopting white light LEDs to be light source, the light that penetrates from pervasion component is not white light.Simultaneously, because light source is White LED light source, manufacturing cost is higher.
In view of the above problems, be necessary to provide a kind of mixed light performance backlight module good and low cost of manufacture to reach the pervasion component that is used on the backlight module.
Summary of the invention
For the deficiencies in the prior art, the technical problem that the present invention solves provides a kind of mixed light performance backlight module good and low cost of manufacture and reaches the pervasion component that is used on the backlight module.
For solving the problems of the technologies described above, technical scheme of the present invention is achieved in that
A kind of backlight module, comprise: at least one irradiation unit, reflecting member and pervasion component, described reflecting member and described pervasion component are oppositely arranged, described irradiation unit is between described reflecting member and described pervasion component, and described pervasion component comprises diffuser plate and the first fluorescent coating that is coated on this diffuser plate.
Further, described diffuser plate has the inner surface towards described reflecting member, and described the first fluorescent coating is coated on the inner surface of described diffuser plate.
Further, described diffuser plate has the dorsad outer surface of described reflecting member, and described the first fluorescent coating is coated on the outer surface of described diffuser plate.
Further, described irradiation unit comprises light source and reflector.
Further, described light source is blue led, and described the first fluorescent coating is yellow phosphor coating.
Further, described light source is the high color temperature white light LEDs, and described the first fluorescent coating is the red fluorescence powder coating.
Further, described reflecting member surface is coated with the second fluorescent coating.
Further, form a hollow type optical cavity between described pervasion component and the described reflecting member, described irradiation unit is laterally disposed in a side of described optical cavity.
A kind of for the pervasion component on the backlight module, described pervasion component comprises diffuser plate and the first fluorescent coating that is coated on this diffuser plate.
Further, described the first fluorescent coating is yellow phosphor coating.
Further, described the first fluorescent coating is the red fluorescence powder coating.
The invention has the beneficial effects as follows: backlight module of the present invention is by arranging the first fluorescent coating at pervasion component, can be so that the light of irradiation unit emission be able to first even the mixing in the larger space between pervasion component and reflecting member, and then so that the mixed light better performances; In addition, by the first fluorescent coating is set at pervasion component, can avoid adopting LED that the higher inside of price is provided with fluorescent material as light source, and then can reduce the manufacturing cost of backlight module of the present invention.
Description of drawings
Figure 1 shows that the structural representation of backlight module the first preferred embodiment of the present invention.
Figure 2 shows that the structural representation of backlight module the second preferred embodiment of the present invention.
Figure 3 shows that the structural representation of backlight module the 3rd preferred embodiment of the present invention.
Figure 4 shows that the structural representation of backlight module the 4th preferred embodiment of the present invention.
The specific embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the drawings and specific embodiments.
Please refer to the drawing 1 is depicted as the first preferred embodiment of backlight module 100 of the present invention, and this backlight module 100 comprises irradiation unit 110, reflecting member 120 and pervasion component 130.
Described irradiation unit 110 comprises reflector 111 and light source 112.Described reflector 111 is spill, and described light source 112 is blue led, and described light source 112 is positioned at the centre of described spill reflector 111.
Described reflecting member 120 and described pervasion component 130 opposing parallel settings, and between reflecting member 120 and pervasion component 130, form a hollow type optical cavity 140.Described irradiation unit 110 is laterally disposed in a side of described optical cavity 140, thereby so that in the described optical cavity 140 of the light directive that described irradiation unit 110 sends, and can well be mixed first in that this optical cavity 140 is interior, and then so that backlight module of the present invention 100 is able to even light mixing.Described pervasion component 130 comprises diffuser plate 131 and the first fluorescent coating 132 that is coated on this diffuser plate 131.Described diffuser plate 131 has towards the inner surface of described optical cavity 140 and the outer surface of described optical cavity 140 dorsad.Described the first fluorescent coating 132 is coated on the inner surface of described diffuser plate 131.Described the first fluorescent coating 132 is yellow phosphor coating.The wavelength visible that inspires behind above-mentioned large-area the first fluorescent coating 132 of described light source 112 light that sends and the irradiation that is sent by described light source 112 this moment mixes, produce white light, described white light penetrates through diffuser plate 131, to play the effect of back lighting.This shows, backlight module 100 of the present invention is by directly applying the first fluorescent coating 132 on diffuser plate 131, can so that the wavelength visible that inspires behind the light that light source 112 sends and large-area the first fluorescent coating 132 of the irradiation that sends via this light source be able on this pervasion component 130, evenly mix, thereby can realize better light mixing effect; In addition, can avoid adopting LED that the higher inside of price is provided with fluorescent material as light source, and then can reduce the manufacturing cost of backlight module 100 of the present invention.
See also the second preferred embodiment that Figure 2 shows that backlight module 300 of the present invention, it also comprises irradiation unit 310, reflecting member 320 and pervasion component 330, described reflecting member 320 forms an optical cavity 340 with described pervasion component 330 opposing parallel settings and between, described pervasion component 330 comprises diffuser plate 331 and the first fluorescent coating 332, and described diffuser plate 331 has the dorsad outer surface of described optical cavity 340.Different from the structure of backlight module 100 in the first preferred embodiment is: described the first fluorescent coating 332 is coated on the outer surface of described diffuser plate 331, equally also can reach purpose of the present invention.
Please refer to the drawing 3 is depicted as the 3rd preferred embodiment of backlight module 200 of the present invention, and wherein said backlight module 200 comprises: irradiation unit 210, reflecting member 220 and pervasion component 230.Described irradiation unit 210 comprises reflector 211 and light source 212, and described reflector 211 is spill, and described light source 212 adopts the high color temperature white light LEDs in the present embodiment, and is positioned at the centre of described spill reflector 211.Described reflecting member 220 and described pervasion component 230 opposing parallel settings, and between reflecting member 220 and pervasion component 230 hollow type optical cavity 240 of formation, described irradiation unit 210 is laterally disposed in a side of described optical cavity 240.Described pervasion component 230 comprises diffuser plate 231 and the first fluorescent coating 232 that is coated on this diffuser plate 231.Described diffuser plate 231 comprises towards the inner surface of described optical cavity 240 and the outer surface of described optical cavity 240 dorsad.Described the first fluorescent coating 232 adopts red fluorescence powder, and be positioned on the inner surface of described diffuser plate 231, thereby so that excite bright dipping to mix behind the light that described light source 212 sends and described the first fluorescent coating 232 of the irradiation that is sent by described light source 212, can produce low colour temperature high-color rendering white-light, described low colour temperature high-color rendering white-light penetrates through stating diffuser plate 231, to play the effect of back lighting.In the present embodiment, described the first fluorescent coating 232 is arranged on the inner surface of described diffuser plate 231, really, and in other embodiments, described the first fluorescent coating 232 can also be arranged on the outer surface of described diffuser plate 231, equally also can reach purpose of the present invention.
See also the 4th preferred embodiment that Figure 4 shows that backlight module 400 of the present invention, this backlight module 400 also comprises irradiation unit 410, reflecting member 420 and pervasion component 430, different from the backlight module 100 among aforementioned the first embodiment is: be provided with the second fluorescent coating 421 on the inner surface of described reflecting member 420, thereby can further play the adjusting colour temperature, improve the effect of colour rendering.
In above embodiment, described backlight module 100,200,300,400 has all adopted an irradiation unit 110,210,310,410, but in other embodiments, backlight module 100 of the present invention, 200,300,400 can adopt a plurality of irradiation units 110,210,310,410, and irradiation unit 110,210,310,410 quantity are selected and can be determined according to backlight module 100,200,300,400 length and width.
In sum, backlight module of the present invention 100 is by directly applying the first fluorescent coating 132 on diffuser plate 131, can so that the wavelength visible that inspires behind the light that light source 112 sends and large-area the first fluorescent coating 132 of the irradiation that sends via this light source be able to sending white light after even the mixing on this pervasion component 130; Simultaneously, avoid adopting LED that the higher inside of price is provided with fluorescent material as light source, and then reduced the manufacturing cost of backlight module 100 of the present invention.
Above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
Claims (11)
1. backlight module, comprise: at least one irradiation unit, reflecting member and pervasion component, described reflecting member and described pervasion component are oppositely arranged, described irradiation unit is characterized in that between described reflecting member and described pervasion component: described pervasion component comprises diffuser plate and the first fluorescent coating that is coated on this diffuser plate.
2. backlight module as claimed in claim 1, it is characterized in that: described diffuser plate has the inner surface towards described reflecting member, and described the first fluorescent coating is coated on the inner surface of described diffuser plate.
3. backlight module as claimed in claim 1, it is characterized in that: described diffuser plate has the dorsad outer surface of described reflecting member, and described the first fluorescent coating is coated on the outer surface of described diffuser plate.
4. backlight module as claimed in claim 1, it is characterized in that: described irradiation unit comprises light source and reflector.
5. backlight module as claimed in claim 4, it is characterized in that: described light source is blue led, described the first fluorescent coating is yellow phosphor coating.
6. backlight module as claimed in claim 4, it is characterized in that: described light source is the high color temperature white light LEDs, described the first fluorescent coating is the red fluorescence powder coating.
7. such as the described backlight module of any one in the claim 1 to 6, it is characterized in that: described reflecting member surface is coated with the second fluorescent coating.
8. backlight module as claimed in claim 1 is characterized in that: form a hollow type optical cavity between described pervasion component and the described reflecting member, described irradiation unit is laterally disposed in a side of described optical cavity.
9. pervasion component that is used on the backlight module is characterized in that: described pervasion component comprises diffuser plate and is coated on the first fluorescent coating on this diffuser plate.
10. as claimed in claim 9 for the pervasion component on the backlight module, it is characterized in that: described the first fluorescent coating is yellow phosphor coating.
11. as claimed in claim 9 for the pervasion component on the backlight module, it is characterized in that: described the first fluorescent coating is the red fluorescence powder coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103624766A CN103115282A (en) | 2011-11-16 | 2011-11-16 | Backlight module and diffusion component applied to backlight module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103624766A CN103115282A (en) | 2011-11-16 | 2011-11-16 | Backlight module and diffusion component applied to backlight module |
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| CN103115282A true CN103115282A (en) | 2013-05-22 |
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| CN2011103624766A Pending CN103115282A (en) | 2011-11-16 | 2011-11-16 | Backlight module and diffusion component applied to backlight module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2633800C2 (en) * | 2013-09-02 | 2017-10-18 | Шэньчжэнь Чайна Стар Оптоэлектроникс Текнолоджи Ко., Лтд. | Method of screening optical film based on phosphorus and used in backlight module and backlight module with such film |
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| US20080158907A1 (en) * | 2006-12-27 | 2008-07-03 | Fitipower Integrated Technology, Inc | Backlight module having light guide plate with fluorescent layer thereon |
| CN201177708Y (en) * | 2007-11-27 | 2009-01-07 | 陈丽雪 | Liquid crystal construction |
| CN201437941U (en) * | 2009-04-30 | 2010-04-14 | 达运精密工业（苏州）有限公司 | LED backlight module and LCD device |
| CN101858566A (en) * | 2010-04-21 | 2010-10-13 | 刘姝 | Light source reflector used in backlight component and backlight component thereof |
| CN201902933U (en) * | 2010-11-30 | 2011-07-20 | 深圳市中联数源电子有限公司 | LED backlight module |
| WO2011118109A1 (en) * | 2010-03-23 | 2011-09-29 | 株式会社朝日ラバー | Flexible reflective substrate, manufacturing method for same, and base material composition for use in reflective substrate |
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2011
- 2011-11-16 CN CN2011103624766A patent/CN103115282A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080158907A1 (en) * | 2006-12-27 | 2008-07-03 | Fitipower Integrated Technology, Inc | Backlight module having light guide plate with fluorescent layer thereon |
| CN201177708Y (en) * | 2007-11-27 | 2009-01-07 | 陈丽雪 | Liquid crystal construction |
| CN201437941U (en) * | 2009-04-30 | 2010-04-14 | 达运精密工业（苏州）有限公司 | LED backlight module and LCD device |
| WO2011118109A1 (en) * | 2010-03-23 | 2011-09-29 | 株式会社朝日ラバー | Flexible reflective substrate, manufacturing method for same, and base material composition for use in reflective substrate |
| CN101858566A (en) * | 2010-04-21 | 2010-10-13 | 刘姝 | Light source reflector used in backlight component and backlight component thereof |
| CN201902933U (en) * | 2010-11-30 | 2011-07-20 | 深圳市中联数源电子有限公司 | LED backlight module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2633800C2 (en) * | 2013-09-02 | 2017-10-18 | Шэньчжэнь Чайна Стар Оптоэлектроникс Текнолоджи Ко., Лтд. | Method of screening optical film based on phosphorus and used in backlight module and backlight module with such film |
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Application publication date: 20130522 |