CN101907247A - Flicker-free backlight module for display panel - Google Patents
Flicker-free backlight module for display panel Download PDFInfo
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- CN101907247A CN101907247A CN2009102032985A CN200910203298A CN101907247A CN 101907247 A CN101907247 A CN 101907247A CN 2009102032985 A CN2009102032985 A CN 2009102032985A CN 200910203298 A CN200910203298 A CN 200910203298A CN 101907247 A CN101907247 A CN 101907247A
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Abstract
The invention discloses a backlight module for a display panel. The backlight module comprises a diffuser, at least one light tube and a single-side light-emitting diode (LED) light source, wherein the at least one light tube is provided with a patterned surface in the diffuser; and the single-side LED light source is attached to each terminal of the diffuser. When a plurality of light tubes are used, the light tubes are connected together by a double-side LED light source. The patterned surfaces of the light tubes are diffused or reflected by rays emitted by the LED light source to provide rays with uniform brightness and intensity. The light tubes are covered by an organic dye molecule doped visible light transparent material of a thin layer. The organic dye has strong ultraviolet light absorption characteristic. By changing the doping concentration of the dye molecules, a coating can become fully opaque or semitransparent for certain wavelengths, and obtains selective wavelength conversion. The mode can change or control color, brightness and intensity of the rays.
Description
Technical field
The present invention is relevant for a kind of light source.A kind of flicker-free backlight module that is used in display pannel of the more special announcement of the present invention, it is for artificial safety, environment friendliness and have very long service life.
Background technology
Display pannel for example LCD (LCD) panel needs backlight.LCD (LCD) is illuminated in this from the side backlight or back.This cathode fluorescent tube (CCFL), thermal cathode fluorescent tube (HCFL), electroluminescence panel (ELP) or incandescent lamp bulb of typically being backlight.
CCFL is backlight to be a kind of common light source that used.In a fluorescent lamp, the galvanism mercury atom, this causes mercury atom to disengage ultraviolet photon, to stimulate the phosphor coating in pipe.The phosphorus of this irriate is the visible emitting photon then.
With reference to figure 1, its explanation traditional C CFL backlight module.As be same as shown in Fig. 1, this traditional C CFL backlight module 100 is made of sealed glass tube 110, and it comprises: a spot of mercury and inert gas, and have phosphorus powder coating on glass tube 110 inside.Electrode 120 is to be positioned on the two ends of sealed tube 110.The serum cap dress that will have coiling 112 invests: each electrode 120 on the two ends of pipe 110; And 112 dresses that will wind the line invest phase inverter 150, to allow electric current to flow through with sealed glass tube 110 conductings.
When applying alternating current 130, electronics from manage an end of 110 via gas transfer to the other end.Therefore, this liquid mercury is converted into gas.Collision between electronics, charge atom and mercury atom causes these electronics to move to higher-energy position standard.After the time durations of a weak point, these electronics will return back to its original energy level, and disengage photon.
Electronics in mercury atom disengages the photon in ultraviolet range, and it is for artificially invisible.In order to convert ultraviolet to visible light, use phosphor coating to disengage more low-energy photon.
Though quite effective, traditional C CFL is backlight to have multinomial shortcoming.A shortcoming is: this CCFL is backlight to need the several seconds to emit beam beginning.
Another shortcoming is, it is difficult to keep via gas the steady flow of electric current, and this can cause the fluorescent tube blast in some cases or destroy other assemblies in circuit.
In addition, the CCFL diffuser that needs backlight is so that provide uniform light.ELP is backlight must to need inverter circuit by a suitable high voltage drive.Incandescent lamp is backlight to have relatively shorter service life and produces relatively large heat.
More shortcoming is: this CCFL phase inverter that needs backlight, and to provide by the employed about 300 volts of voltages of CCFL fluorescent tube, this light intensity also can't change, and cold temperature influences light output unfriendly, and vibration can be shortened the service life of fluorescent tube.
In addition, the processing of throwing aside of CCFL backlight module is problematic, and this is because some of its waste material are harmful to.For example, the CCFL fluorescent tube comprises a spot of mercury, and it is harmful for environment and human health.
To handle the necessary SC of CCFL backlight module in order suitably throwing aside, and must to use harmful especially garbage bury (landfill).This is not only expensive and dangerous potentially, and can damage environment.
Therefore, need the display pannel of improvement backlight, replacing the traditional backlight module, and be economical, effectively and to the mankind and Environmental security.
Summary of the invention
In order to reach,, the invention provides a kind of backlight module of flicker free and safety of environment friendliness as realizing and broad description person at this according to these and other advantage of the object of the invention and so that overcome the shortcoming of conventional method.
Purpose of the present invention is for providing a kind of backlight module, to be substituted in the traditional backlight in the display pannel.Flicker free formula of the present invention is backlight can be installed in the conventional backlight unit, therefore also need not change this back light unit, so that use of the present invention backlight.Flicker free formula of the present invention replacement backlight CCFL, HCFL, ELP and incandescent backlight.
A kind of backlight module that is used for display pannel of the present invention comprises: a diffuser; At least one light pipe is arranged in this diffuser; And at least one LED source, dress invests this diffuser.Backlight comprising of the present invention a: anemostat; Light pipe in anemostat; An and light emitting diode (LED) light source that is arranged on an end of this anemostat or respectively holds.
Because use led light source backlight of the present invention, and this light emitted line can't glimmer, and this backlight not having postpones and (turn on) opened in conducting at once.In case conducting backlight is opened, it can get started emission and stablize visible light.
In addition, backlight module of the present invention does not comprise mercury or other deleterious materials, and makes the expense of light source abandon to handle easily and for Environmental security.
Another object of the present invention is for providing a kind of low-power backlight module, and it uses low amounts of power and has long service life.This causes saving for manufacturer and consumer's prime cost.
Another object of the present invention is for providing a kind of the backlight of selective wavelength conversion that have.With this light pipe be coated with one or the number thin layers with the organic dye molecule doped visible light transparent material.This organic dyestuff is composed in ultraviolet ray (UV) and some short-wavelength visible light has strong light absorption feature in zone.In this way, can change or control the color or the colour temperature of the light emitted line of light source thus.
Therefore, a kind of led light source of pattern can produce different light rays color, brightness, intensity or colour temperature.Therefore, manufacturer or supplier only must make or store a kind of light source of pattern, and are not the light source of broad variety.
Another advantage of the present invention is that backlight module of the present invention is not applied in pressure.Therefore, of the present invention backlight and can't explode through the gas-pressurized pipe unlike tradition.
The present invention also provides a kind of flicker-free backlight module, and it comprises: a plurality of light pipes and led light source.The bilateral led light source is arranged on each between the light pipe, and light pipe is maintained together.One-sided led light source is arranged on through connecting the two ends of light pipe.In this way, can extend the length of this flicker free formula light source, maybe can increase the light intensity of this light source.
These and other purpose of the present invention will be after the detailed description of reading following preferred embodiment, for haveing the knack of this technology personage for obvious in this technology.Should be appreciated that above general remark and following detailed description only are the model, further explanation of invention is provided with being intended to provide for it.
These are appended graphicly to be included in this, so that being provided, the present invention further understands, and these graphic being included in wherein to constitute the some of this specification.These appended graphic explanation embodiments of the invention, and it illustrates together therewith, is used to explain principle of the present invention.
Description of drawings
Fig. 1 illustrates traditional C CFL backlight module;
Fig. 2 A explanation is according to one embodiment of the invention flicker-free backlight module;
Fig. 2 B is the exploded view according to one embodiment of the invention flicker-free backlight module;
Fig. 3 illustrates led light source according to an embodiment of the invention;
Fig. 4 explanation is according to the anemostat of one embodiment of the invention flicker-free backlight module;
Fig. 5 A explanation is according to the light pipe of one embodiment of the invention flicker-free backlight module;
Fig. 5 B is for having the vertical view of the light pipe of patterned surface according to one embodiment of the invention;
Fig. 5 C is for having the side view of the light pipe of patterned surface according to one embodiment of the invention;
Fig. 5 D is for having the upward view of the light pipe of patterned surface according to one embodiment of the invention;
Coupler is assembled in Fig. 6 explanation according to an embodiment of the invention;
Fig. 7 explanation is installed in the backlight module of the present invention in the conventional backlight unit;
Fig. 8 A is for comprising the exploded view of the flicker-free backlight module of two light pipes and bilateral led light source according to an embodiment of the invention;
Fig. 8 B is the module map according to one embodiment of the invention illustrated flicker-free backlight module in Fig. 8 A;
Fig. 8 C explanation is according to first coupler of one embodiment of the invention bilateral led light source;
Fig. 8 D explanation is according to second coupler of one embodiment of the invention bilateral led light source;
Fig. 8 E explanation is according to the radiator of one embodiment of the invention bilateral led light source;
Fig. 8 F is for comprising the exploded view of the flicker-free backlight module of three light pipes and two bilateral led light sources according to an embodiment of the invention; And
Fig. 9 A and 9B are instead of optical tube shape according to an embodiment of the invention.
Description of reference numerals
The 100-CCFL backlight module; The 110-glass tube; The 112-coiling; The 120-electrode; The 130-alternating current; The 150-phase inverter; The 200-flicker-free backlight module; The 210-anemostat; The 220-light pipe; The 221-smooth surface; The 222-patterned surface; 222A-is shallow; 222B-spike breach; The 223-terminal end surface; 230-light emitting diode (LED) light source; 231-light emitting diode (LED); The 232-housing; The 235-electric connector; The 281-protuberance; The 282-protuberance; The 310-flicker-free backlight module; The 320-AC/DC converter; The 330-power supply; 840-bilateral led light source; 841-first coupler; 842-light emitting diode (LED); The 843-radiator; 844-second coupler; The 845-protuberance; The 846-hole; 849-dress attaching is put.
The specific embodiment
Describe preferred embodiment of the present invention now in detail, and its example is described in the accompanying drawings.When may the time, the identical reference number of use in these figure and explanation is to refer to identical or like.
With reference to figure 2A, its explanation is according to the flicker-free backlight module of the embodiment of the invention; And with reference to figure 2B, its explanation is according to the exploded view of embodiment of the invention flicker-free backlight module.
As shown in being same as among Fig. 2 A and the 2B, this flicker-free backlight module 200 comprises: an anemostat 210: at least one light pipe 220 in this anemostat 210; And two led light sources 230, its each respectively holding at this anemostat 210.Each these led light source 230 comprises electric connector 235, is used to allow to supply power to led light source 230.Assembling coupler 280 maintains backlight module together.
With reference to figure 3, it illustrates led light source according to an embodiment of the invention.Each these led light source 230 comprises: at least one LED 231; One housing 232 is used to hold this LED 231; And an electric connector 235, being used for allowing electric power is supplied to this at least one light emitting diode by a power supply, this electric connector 235 is applicable to and replaces a traditional backlight module.In some embodiments of the invention, this led light source more comprises: the AC/DC electric pressure converter in housing 232 somes.
With reference to figure 4, its explanation is according to the anemostat of one embodiment of the invention flicker-free backlight module.This anemostat 210 comprises: one of transparent, a translucent or color material prolongs hollow tube.This material comprises, for example: plastic cement, acrylic, butyric acid salt (butyrate), Merlon, PETG, ETFE or the other materials with suitable character.
This anemostat 210 is as the housing around light pipe.In these embodiment of the present invention, this anemostat 210 comprises trnaslucent materials, and this anemostat 210 will be spread via light pipe by the light emitted line of led light source.In these embodiment of the present invention, this anemostat 210 comprises color material, and this anemostat 210 more influences light color.
In an embodiment of the present invention, the led light source dress is invested anemostat 210.In another embodiment of the present invention, the led light source dress is invested anemostat 210 and light pipe.
With reference to figure 5A, its explanation is according to the light pipe of one embodiment of the invention flicker-free backlight module.As be same as shown in Fig. 5 A, this light pipe 220 comprises: the extension rod of a transparent or semitransparent material.This light pipe 220 comprises: smooth surface 221, two terminal end surface 223 and patterned surfaces 222 in fact.In some embodiments of the invention, this patterned surface 222 is the light reflecting surface.In some embodiments of the invention, this patterned surface 222 is the light diffusing surface.
This patterned surface 222 comprises: a plurality of breach, depression, pit, bending or other patterns, and it will be by the light emitted line reflection of led light source, diffusion or expansion, and this light transmits via light pipe 220 from terminal end surface 223.This pattern on patterned surface 222 allows this by the light emitted line of flicker-free backlight module, has even quality and intensity in this whole length backlight.
In application, electric power is supplied to led light source via electric connector.This in led light source the LED conducting and light injected in light pipe via the terminal end surface of light pipe.This light transmits via light pipe, and launches from the patterned surface of light pipe, or is reflected by the patterned surface of light pipe, and is launched by the smooth surface of light pipe.
With reference to figure 5B, it is for having the vertical view of the light pipe of light diffusing surface according to one embodiment of the invention; And with reference to figure 5C, it is for having the side view of the light pipe of light diffusing surface according to one embodiment of the invention; And with reference to figure 5D for have the upward view of the light pipe of light diffusing surface according to one embodiment of the invention.
As be same as shown in Fig. 5 B, Fig. 5 C and Fig. 5 D: the patterned surface 222 of light pipe 220 comprises pattern, with reflection or diffusion light.In the illustrated embodiment of Fig. 5 B and Fig. 5 C, this pattern comprises a series of breach, and it is the shallow 222A on light pipe 220 terminals, and its intermediate depth at light pipe 220 increases gradually, and becomes spike breach 222B.In this embodiment, the pattern of patterned surface 222 provides the suitableeest pattern, to spread equably or reflection ray.Because the terminal 223 of light pipe 220 is more near led light source, and more diffusions of needs and reflection.Then need less diffusion or reflection from led light source is far away more.
In other embodiments of the invention, can use this to be used for other pattern patterns of patterned surface.For example, in an embodiment of the present invention, only use a led light source.Therefore, this pattern comprises: from then near the terminal of the light pipe of led light source, the notch depth of increase gradually of the terminal of distance L ED light source light pipe farthest so far.
In another embodiment of the present invention, this pattern is included in the raising spike that extends on the light pipe surface.Different embodiments of the invention comprise: be recessed into the pattern in the light pipe surface, in this embodiment, this pattern extends on other surfaces of light pipe.
In another embodiment of the present invention, this pattern on patterned surface comprises the pit of a plurality of circles.Towards one or more terminal of this light pipe, these pits are little, and increase towards its size of centre of light pipe.In another embodiment of the present invention, the degree of depth in this hole, hole changes.
In another embodiment of the present invention, this pattern on patterned surface comprises: from then on surperficial outstanding a plurality of cimas.
In another embodiment of the present invention, this pattern on patterned surface comprises: a plurality of round pits and a plurality of cima.
With reference to figure 6, coupler is assembled in its explanation according to an embodiment of the invention.
For backlight module is maintained together, in some embodiments of the invention, use assembling coupler 280.This assembling coupler 280 comprise: a plurality of light pipe protuberances 281, with a plurality of led light source protuberances 282.When assembling, light pipe is clamped by the inside of light pipe protuberance 281, and this led light source is clamped by the led light source protuberance.This anemostat is mounted to the outer wall of light pipe protuberance 281 appositely.When clamping this light pipe, this assembling coupler is positioned this light pipe for the central authorities of this anemostat and leaves the wall of this anemostat.
In other embodiments of the invention, use other devices that this light source module is maintained together.For example, in one embodiment of this invention, the housing of this led light source comprises: a round flange is used to clamp light pipe; And a wall extension, be used for adorning appositely and be attached to anemostat.
With reference to figure 7, its explanation is installed in the light source of the present invention in the conventional backlight unit.
As be same as shown in Fig. 7, flicker-free backlight module 310 of the present invention can be installed in the conventional backlight unit.In this embodiment, an AC/DC converter 320 will convert direct current to by the alternating current that power supply 330 is supplied.This direct current is supplied to the electric connector of light source, and the light source conducting is opened.
With reference to figure 8A, it is for comprising the exploded view of the flicker-free backlight module of two light pipes and bilateral led light source according to an embodiment of the invention; And with reference to figure 8B, it is the module map according to one embodiment of the invention illustrated flicker-free backlight module in Fig. 8 A.
As be same as shown in Fig. 8 A and the 8B, in an embodiment of the present invention, this flicker-free backlight module 200 comprises a plurality of light pipes 220.In the illustrated embodiment of Fig. 8 A and 8B, this flicker-free backlight module 200 comprises two light pipes 220.With one-sided led light source 230 be arranged on connect on each terminal of light pipe 220.This bilateral led light source 840 provides light to two light pipes 220, and these two light pipes 220 are maintained together.Electric power by for example cable in being arranged in anemostat 210 and electric wire, and is supplied to bilateral led light source 840, and when with these flicker-free backlight module 200 assemblings, these cables and electric wire are interior and invisible for being built in anemostat 210.
With reference to figure 8C, its explanation is according to first coupler of one embodiment of the invention bilateral led light source; With reference to figure 8D, its explanation is according to second coupler of one embodiment of the invention bilateral led light source; And with reference to figure 8E, its explanation is according to the radiator of one embodiment of the invention bilateral led light source.
This bilateral led light source 840 comprises: one first coupler 841, one second coupler 844, a radiator 843 and two LED 842.A LED 842 is arranged within first coupler 841, and a LED 842 is arranged within second coupler 844.This radiator 843 provides two resistance barriers between the LED 842, and is arranged between first coupler 841 and second coupler 844.This first coupler 841 and second coupler 844 comprise: the dress attaching puts 849, and for example: pin, hole, protuberance or groove, its coupling engages so that bilateral led light source 840 is maintained together.
With reference to figure 8F, it is for comprising the exploded view of the flicker-free backlight module of three light pipes and two bilateral led light sources according to an embodiment of the invention.
In the illustrated embodiment of Fig. 8 F, flicker-free backlight module 200 of the present invention comprises three light pipes 220.In order to provide light to link together, use two bilateral led light sources 840 to three light pipes 220 and with light pipe 220.A bilateral led light source 840 is arranged between first and second light pipe 220, and the second bilateral led light source 840 is arranged between the second and the 3rd light pipe 220.
In other embodiments of the invention, use more light pipes and bilateral led light source.The length of using more light pipes can extend this flicker-free backlight module.And, use shorter light pipe and more bilateral led light sources can increase the intensity of this flicker-free backlight module.
In one embodiment of this invention, first and second coupler of this bilateral led light source is by engaging with radiator coupling but not match each other and be bonded together and keep together.
It should be noted that the dress attaching of coupler put and be illustrated as the hook protuberance.Yet, in other embodiments of the invention, can use other dress attachings to put, for example: sleeve, bolt or the pin that engages with the light pipe coupling.
With reference to figure 9A and 9B, it is instead of optical tube shape according to an embodiment of the invention.
In these embodiment of the present invention, the alternative form that is shaped as illustrated shape in Fig. 1-8 of this light pipe 220.Formerly among the embodiment, this light pipe is round cylinder except patterned surface.In Fig. 9 A and 9B among the illustrated embodiment, this light pipe 220 be shaped as polygon.
By the shape that changes this light pipe, for example similarly be and can influence the different light rays feature: the intensity or the uniformity.
The present invention also provides the backlight module with selective wavelength conversion.With this light pipe be coated with one or the number thin layers with organic dye molecule institute doped visible light transparent material.This organic dyestuff has strong light and absorbs feature in ultraviolet ray (UV) wavelength and some short-wavelength visible light spectrum zone.
When this cover film via light pipe during with irradiation of this equiwavelength's (λ 1) light or pump (pump), these electronics in dye molecule jump as for the excited state of higher-energy position standard from ground state.These dye molecules from excited state decay to ground state mainly be via the width of cloth penetrate the decay and take place.Therefore, these dye molecules can than the longer wavelength (λ 2) of pump wavelength (λ 1) very effectively the width of cloth penetrate.
By the doping content that changes dye molecule in this film, this cover film can become fully opaque or translucent for pump wavelength (λ 1).In this complete opaque situation, light via cover film will only be the light of wavelength X 2 by the light pipe emission for this.In the situation of this latter (translucent), this can be the light of the combination spectrum of wavelength X 1+ λ 2 by light pipe emission via the light of cover film.
Therefore, a kind of led light source of pattern can produce different light rays color, brightness or intensity.Therefore, manufacturer or supplier only must make or store a kind of light source of pattern, and are not the light source that stores broad variety.
For example, if use the blue led light source, this can produce the gold-tinted of being launched through doping coating or doping light pipe.For down to conversion, this light source is necessary for the higher-energy color, for example uses: have the blueness of higher-energy as light source, with green red (because it has more low-yield) in doping, so that reach downward conversion.
In one embodiment of this invention, with the outer surface doping of this light pipe, so that selected wavelength conversion to be provided.
In another embodiment of the present invention, this light pipe material is to be doped in the whole material.
In one embodiment of this invention, use the led light source of different colours.By the doping that changes coating, and launch uniform light.
In one embodiment of this invention, a plurality of LED are used in each led light source.Light intensity or brightness that this provides elasticity to be wanted to reach.
In one embodiment of this invention, each led light source comprises: blue led, red LED and green LED.
In one embodiment of this invention, the some of this light pipe or light pipe covers with reflectance coating.This reflectance coating is by preventing that light from escaping or penetrate from the part of light pipe, and further strengthens the efficient of this light source.
In one embodiment of this invention, do not supply electric power consistently.Therefore, LED is not conducting always.Because LED has fast response time, and LED can be switched conducting with cut-out so that saving electric power.In this embodiment, this LED with human eye the frequency that can't detect and switched conductive and cut-out.For example, with enough pulse width modulations function circulation timei of being added, enough two-forties that this light source can be detected are opened (turns on) and are closed (turns off), and save electric power simultaneously.
In one embodiment of this invention, the electric connector of this led light source and conventional incandescent are backlight compatible.In this embodiment, this light pipe cooperates with the diffuser that covers this light pipe, with the emission uniform light.This embodiment provides for conventional incandescent effective replacement backlight.The present invention far surpasses general incandescent person backlight with the low power that uses long service life backlight, and makes its actual and economic saving.
In one embodiment of this invention, this electric power that is supplied to light source is: for example from direct current (DC) electric power of battery.This also allows: this light source is a Portable, maybe can be used in the position of the operational vehicle of DC electric power for example.In this embodiment, and need not the AC/DC converter.
In these embodiment of the present invention, this one or more LED is a White LED.In other embodiments of the invention, these LED comprise: be used for the R-G-B polycrystalline sheet LED that preferable color presents.In these embodiment of the present invention, this led light source comprises: the LED of one group of RGB, White LED or one group of monochromatic LED.In one embodiment of this invention, this color by the light emitted line of LED changes or changes according to electric current position standard or voltage level.This allows by change curtage position standard, and selects the color of light.
The invention provides the multiple advantages that is better than traditional backlight.Of the present invention backlight and need not high voltage high-frequency phase inverter, and can not produce electromagnetic interference (EMI) with low voltage operating.This low power consumption also can improve by using this to be used for the potential pulse control of dynamic backlight control.And it is backlight to the invention provides the quick response with conducting unlatching (turn on) time moment.The present invention also provides preferable color and the control of excellent color.In addition, of the present invention backlight to environment friendliness and safety, and do not use mercury or other deleterious materials.In addition, the invention provides direct replacement traditional tube and power supply, and need not revise or very the positive back light unit of light maintenance all the other partly.
The above description of this invention is illustrative, and nonrestrictive, and those skilled in the art is understood, and can carry out many modifications, variation or equivalence to it within spirit that claim limits and scope, but they will fall within the scope of protection of the present invention all.
Claims (20)
1. a backlight module that is used for display pannel is characterized in that, comprising:
One diffuser;
At least one light pipe is arranged in this diffuser; And
At least one LED source, dress invests this diffuser.
2. backlight module as claimed in claim 1 is characterized in that, this at least one light pipe comprises: patterned surface is used for diffusion or reflection ray.
3. backlight module as claimed in claim 1 is characterized in that, this LED source dress invests each terminal of this diffuser.
4. backlight module as claimed in claim 1 is characterized in that, this LED source comprises:
At least one light emitting diode;
One housing is used to hold this at least one light emitting diode; And
One electric connector is used for allowing electric power is supplied to this at least one light emitting diode by a power supply.
5. backlight module as claimed in claim 1 is characterized in that, this at least one light pipe comprises: with a coating of organic dye molecule doped visible light transparent material.
6. backlight module as claimed in claim 1 is characterized in that, this at least one light pipe comprises: the organic dyestuff coating with UV Absorption feature.
7. backlight module as claimed in claim 1 is characterized in that, more comprises a bilateral LED source that is arranged between each light pipe.
8. backlight module as claimed in claim 7 is characterized in that, this dual-side emissive diode light-source comprises:
One first coupler;
One second coupler; And
At least one light emitting diode in this first coupler and this second coupler, this first coupler and this second coupler link together, to form this dual-side emissive diode light-source.
9. a backlight module that is used for display pannel is characterized in that, comprising:
One diffuser;
At least one light pipe is arranged in this diffuser, and this light pipe comprises patterned surface, is used for diffusion or reflection ray;
At least one LED source, dress invests this diffuser, and this at least one LED source comprises an electric connector, and this electric connector is applicable to and replaces a traditional backlight module.
10. backlight module as claimed in claim 9 is characterized in that, this LED source dress is invested this each terminal of this diffuser.
11. backlight module as claimed in claim 9 is characterized in that, this LED source comprises:
At least one light emitting diode; And
One housing is used to hold this at least one light emitting diode, and this electric connector allows electric power is supplied to this at least one light emitting diode from a power supply.
12. backlight module as claimed in claim 9 is characterized in that, this light pipe comprises: with a coating of organic dye molecule doped visible light transparent material.
13. backlight module as claimed in claim 9 is characterized in that, this light pipe comprises: a coating that is used for selective wavelength conversion.
14. backlight module as claimed in claim 9 is characterized in that, more comprises:
At the bilateral LED source between this light pipe respectively, this dual-side emissive diode light-source comprises:
One first coupler;
One second coupler; And
At least one light emitting diode in this first coupler and this second coupler, this first coupler and this second coupler link together, to form this dual-side emissive diode light-source.
15. the backlight module as claim 14 is characterized in that, this dual-side emissive diode light-source more comprises:
One radiator, it is arranged in this first coupler in this at least one light emitting diode and this second coupler between this at least one light emitting diode.
16. a backlight module is characterized in that,
One hollow anemostat;
At least two light pipes, it is in this hollow anemostat, and each this light pipe comprises a patterned surface that is used to spread light;
One one-sided LED source, its dress invest each terminal of this hollow anemostat; And
At least one dual-side emissive diode light-source, it links together these at least two light pipes.
17. the backlight module as claim 16 is characterized in that, this one-sided LED source comprises:
At least one light emitting diode;
One housing is used to hold this at least one light emitting diode; And
One electric connector is used for providing electric power to this at least one light emitting diode from a power supply, and this electric connector is applicable to and replaces a conventional backlight unit.
18. the backlight module as claim 16 is characterized in that, these light pipes comprise: with a coating of organic dye molecule doped visible light transparent material.
19. the backlight module as claim 16 is characterized in that, this dual-side emissive diode light-source comprises:
One first coupler;
One second coupler; And
At least one light emitting diode in this first coupler and this second coupler; This first coupler and this second coupler link together, to form a bilateral LED source.
20. the backlight module as claim 19 is characterized in that, this dual-side emissive diode light-source more comprises:
One radiator, it is arranged in this first coupler in this at least one light emitting diode and this second coupler between this at least one light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102032985A CN101907247A (en) | 2009-06-04 | 2009-06-04 | Flicker-free backlight module for display panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102032985A CN101907247A (en) | 2009-06-04 | 2009-06-04 | Flicker-free backlight module for display panel |
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| Publication Number | Publication Date |
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| CN101907247A true CN101907247A (en) | 2010-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009102032985A Pending CN101907247A (en) | 2009-06-04 | 2009-06-04 | Flicker-free backlight module for display panel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333932A (en) * | 2014-03-26 | 2015-02-04 | 南京第壹有机光电有限公司 | Adjustable organic electroluminescence illuminating lamp |
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2009
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333932A (en) * | 2014-03-26 | 2015-02-04 | 南京第壹有机光电有限公司 | Adjustable organic electroluminescence illuminating lamp |
| CN104333932B (en) * | 2014-03-26 | 2017-01-18 | 南京第壹有机光电有限公司 | Adjustable organic electroluminescence illuminating lamp |
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Application publication date: 20101208 |