CN1790125A - Backlight module assembly - Google Patents
Backlight module assembly Download PDFInfo
- Publication number
- CN1790125A CN1790125A CN 200410077650 CN200410077650A CN1790125A CN 1790125 A CN1790125 A CN 1790125A CN 200410077650 CN200410077650 CN 200410077650 CN 200410077650 A CN200410077650 A CN 200410077650A CN 1790125 A CN1790125 A CN 1790125A
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- CN
- China
- Prior art keywords
- light
- light source
- guide plate
- module backlight
- light guide
- Prior art date
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Abstract
The invention discloses an aphototropism mould, which consists of light conducting plate and light source, wherein the light conducting plate contains colorful particle of corresponding light source color system; the emergent light beam of light source is transmitted into high-purity white light through scattering the colorful particle.
Description
[technical field]
The present invention relates to a kind of module backlight, relate in particular to a kind of employing light emitting diode (Light Emitting Diode, LED) module backlight of light source.
[background technology]
The advantage that operating voltage is low, luminosity is high, response speed is fast because light emitting diode has, the life-span is long makes in its module backlight that is widely used in mobile phone, PDA (personal digital assistant), display.
Because the light guide plate material is the light conductivity material of clear, colorless, therefore the chromaticity coordinates of module backlight is determined by the colour system of light-emitting diode, if white light source colour system purity is higher, could show the higher white of purity and other color when then it is by optical element and liquid crystal panel (tool colored filter), for example blue, green, red, if white light source colour system purity is lower, the yellow partially light beam of outgoing then, it shows yellow partially white and other color during by optical element and liquid crystal panel, for example blue, green, red.
Seeing also Fig. 1, is the synoptic diagram of a kind of prior art module first embodiment backlight.This module 10 backlight comprises the light guide plate 13 of light source 12 and clear, colorless, this light guide plate 13 comprise exiting surface 132 that an incidence surface 131, links to each other with incidence surface 131 and with exiting surface 132 opposed bottom surface 133.Light source 12 is that the incidence surface 131 of relative light guide plate 13 is provided with, and this light source 12 is a plurality of white light-emitting diodes, and the outgoing beam of these a plurality of white light-emitting diodes reflects in light guide plate 13 after entering light guide plate 13 by the incidence surface 131 of light guide plate 13.These light guide plate 13 guiding light sources 12 send the transmission direction of light beam, and convert thereof into exiting surface 132 outgoing of planar light from light guide plate 13.
But the white light emitting diode technology also fails effectively its white light to be controlled at the higher ideal range of purity, promptly much present inclined to one side yellow, thereby make the inclined to one side yellow that presents backlight, and and then the color effect of video display.
[summary of the invention]
To send white light purity lower in order to overcome in the prior art module white light source backlight, thereby influence the defective of display color effect, the invention provides a kind of module backlight of can outgoing purity higher white light.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of module backlight is provided, and it comprises a light guide plate and a light source, this light guide plate have to should light source colour the colored particle of system; Wherein pass through the scattering of this light guide plate colored particle, and be transformed into the higher white light of purity from the light beam of this light source outgoing.
Compared with prior art, effect of the present invention is: light guide plate of the present invention be to should light source colour coloured light guide plate of system, the white color system light beam that purity is the lower or colour system light beam is arranged, scattering by this light guide plate colored particle, and be transformed into the higher white light of purity, therefore the higher module backlight of outgoing white light purity can be obtained, thereby the display color effect can be promoted.
[description of drawings]
Fig. 1 is the synoptic diagram of a kind of prior art module backlight.
Fig. 2 is the synoptic diagram of the present invention's module first embodiment backlight.
Fig. 3 is the mixed light principle schematic.
Fig. 4 is the synoptic diagram of the present invention's module second embodiment backlight.
[embodiment]
Seeing also Fig. 2, is the synoptic diagram of the present invention's module first embodiment backlight.This module 20 backlight comprises a light guide plate 22 and a light source 23, this light source 23 is white light-emitting diodes, its outgoing beam is yellow partially light beam 230, this light guide plate 22 has inclined to one side blue particles 220 that should yellow partially light beam, promptly this light guide plate 22 presents inclined to one side blueness, this light guide plate 22 comprise an incidence surface 221, the exiting surface 222 that links to each other with incidence surface 221 and with exiting surface 222 opposed bottom surface 223.
Seeing also Fig. 3, is the mixed light principle schematic.Blue light beam 40 mixes with yellow light beam 50, penetrates white light beam 60, wherein blue light beam 40 and yellow light beam 50 purity more quite and matching ratio more suitably, then white light beam 60 purity are higher.
As mentioned above, this incidence surface 221 is in order to receiving the yellow partially light beam 230 of this light source 23, and this yellow partially light beam 230 is converted into the higher white plane light of purity 231 and penetrates under the scattering of blue particles 220 partially, mixed light effect.
Wherein this light guide plate 22 is plate shaped, and the material of this light guide plate 22 is methacrylic resins, and these light guide plate 22 general injection forming methods that adopt are made.
Wherein, this light guide plate 22 be when ejection formation with inclined to one side blue particles 220 and methacrylic resin one ejection formation, promptly blue particles 220 is mixed among the light guide plate 22 partially.This inclined to one side blue particles 220 is a kind of chemical materials, and in order to control outgoing uniformity of light and brightness, the quantity of inclined to one side blue particles 220 is controlled in segmentation in the ejection formation process.
This module 20 backlight further comprises a reflector plate 21 right with these light source 23 monoclinic phases, and these reflector plate 21 materials are silver, and this reflector plate 21 is a concave curved surface shape.
Seeing also Fig. 4, is the second embodiment synoptic diagram of light source of the present invention.This module 30 backlight comprises a light guide plate 32 and a light source 33, this light source 33 is a plurality of yellow light-emitting diodes, it is the yellow light beam 330 of its outgoing, these light guide plate 32 tools are to blue particles 320 that should the sodium yellow bundle, this light guide plate 32 comprise an incidence surface 321, the exiting surface 322 that links to each other with incidence surface 321 and with exiting surface 322 opposed bottom surface 323.This incidence surface 321 is to be used to receive the yellow light beam 330 that light source 33 sends, and this yellow partially light beam 330 is converted into the higher white plane light of purity 331 and penetrates in the scattering of blue particles 320 partially under the mixed light effect.
But, the invention is not restricted to first embodiment and second embodiment is described, wherein this light source also can be to send other light source that light fails to reach desirable pure white light, as the cold cathode fluorescent tube.The light beam that light source sends can be other colour system also, and as blueness, it is yellow that its corresponding colored particle is.This light guide plate material is the resin material with good light penetration, for example the thermoplastic resin of melting moulding such as polycarbonate, polystyrene, methyl methacrylate and cinnamic copolymer resin, noncrystalline cyclic olefin polymer, polypropylene, tygon, thermoplastics type's vibrin.
Claims (10)
1. a module backlight, it comprises a light guide plate and a light source, it is characterized in that: this light guide plate has colored particle that should light source colour system, wherein from the scattering by this light guide plate colored particle of the light beam of this light source outgoing, and is transformed into the higher white light of purity.
2. module backlight as claimed in claim 1 is characterized in that: this light source is a light emitting diode.
3. module backlight as claimed in claim 2 is characterized in that: this light source is a white light emitting diode, and its emitted light beams is inclined to one side sodium yellow.
4. module backlight as claimed in claim 3 is characterized in that: this colored particle is inclined to one side blueness.
5. module backlight as claimed in claim 2 is characterized in that: this light source is a Yellow light emitting diode.
6. module backlight as claimed in claim 5 is characterized in that: this colored particle is blue.
7. module backlight as claimed in claim 2 is characterized in that: this light source is a blue light-emitting diode.
8. module backlight as claimed in claim 7 is characterized in that: this colored particle is yellow.
9. module backlight as claimed in claim 1 is characterized in that: this colored particle is with this light guide plate ejection formation, and becomes an one-piece construction.
10. module backlight as claimed in claim 9 is characterized in that: the quantity of segmentation control colored particle during ejection formation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB2004100776502A CN100376963C (en) | 2004-12-18 | 2004-12-18 | Backlight module assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB2004100776502A CN100376963C (en) | 2004-12-18 | 2004-12-18 | Backlight module assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1790125A true CN1790125A (en) | 2006-06-21 |
CN100376963C CN100376963C (en) | 2008-03-26 |
Family
ID=36788083
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2004100776502A Expired - Fee Related CN100376963C (en) | 2004-12-18 | 2004-12-18 | Backlight module assembly |
Country Status (1)
Country | Link |
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CN (1) | CN100376963C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101165561B (en) * | 2006-10-18 | 2010-05-12 | 群康科技(深圳)有限公司 | Backlight module group and liquid crystal display device |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07176794A (en) * | 1993-12-17 | 1995-07-14 | Nichia Chem Ind Ltd | Planar light source |
CN2310926Y (en) * | 1997-09-26 | 1999-03-17 | 陈兴 | Area source device for LED |
JP2000180633A (en) * | 1998-12-16 | 2000-06-30 | Shiseido Co Ltd | Light guide plate, lighting system and liquid crystal display unit |
JP2002358812A (en) * | 2002-02-12 | 2002-12-13 | Nichia Chem Ind Ltd | Light source using galium nitride compound semiconductor |
JP2004055772A (en) * | 2002-07-18 | 2004-02-19 | Citizen Electronics Co Ltd | Led light emitting device |
CN1477721A (en) * | 2002-08-20 | 2004-02-25 | 何文志 | Light-mixed layer and method for mixing lights |
US6871972B2 (en) * | 2002-11-25 | 2005-03-29 | Toppoly Optoelectronics Corp. | Light module for LCD panel |
CN1266778C (en) * | 2003-01-10 | 2006-07-26 | 晶元光电股份有限公司 | Packaging material and its package light-mixed type light-emitting diode device |
TW594256B (en) * | 2003-05-21 | 2004-06-21 | Toppoly Optoelectronics Corp | Light structure for panel display |
-
2004
- 2004-12-18 CN CNB2004100776502A patent/CN100376963C/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101165561B (en) * | 2006-10-18 | 2010-05-12 | 群康科技(深圳)有限公司 | Backlight module group and liquid crystal display device |
Also Published As
Publication number | Publication date |
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CN100376963C (en) | 2008-03-26 |
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Granted publication date: 20080326 Termination date: 20151218 |
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