CN102867730A - Plane light-emitting device, backlight source and liquid crystal display device - Google Patents
Plane light-emitting device, backlight source and liquid crystal display device Download PDFInfo
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- CN102867730A CN102867730A CN2012102793723A CN201210279372A CN102867730A CN 102867730 A CN102867730 A CN 102867730A CN 2012102793723 A CN2012102793723 A CN 2012102793723A CN 201210279372 A CN201210279372 A CN 201210279372A CN 102867730 A CN102867730 A CN 102867730A
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Abstract
The invention relates to the field of liquid crystal display, in particular to a plane light-emitting device, a backlight source and a liquid crystal display device, which are used for providing high-uniformity plane light. The invention discloses the plane light-emitting device, which comprises a first base plate, a second base plate, a first electrode, a second electrode, two outer leads, inert gas and discharge gas, wherein the first base plate and the second base plate are in butt joint to form a sealed chamber; the first electrode and the second electrode are arranged at two ends of the sealed chamber; the two outer leads are respectively connected with the first electrode and the second electrode; the inert gas and the discharge gas are filled in the sealed chamber; the first base plate comprises a first glass base plate, a first reflecting layer which is positioned on the inner surface of the first glass base plate, a light condensation layer which is positioned on the first reflecting layer, and a fluorescent layer which is positioned on the light condensation layer; and the second base plate comprises a second glass base plate, and a second reflecting layer which is positioned on the inner surface of the second glass base plate. Under the action of the first reflecting layer, the second reflecting layer and the light condensation layer, the high-uniformity plane light is obtained.
Description
Technical field
The present invention relates to field of liquid crystal display, relate in particular to a kind of planar emission apparatus, Backlight source and liquid crystal display device.
Background technology
At present, that cold cathode fluorescent lamp (CCFL, Cold Cathode Fluorescent Lamp) has is simple in structure, long service life, easily be processed into the advantages such as various shapes, is widely used in field of liquid crystal display.
As shown in Figure 1, existing cold cathode fluorescent lamp generally comprises: the sealed chamber that is formed by the first glass substrate 100 and the second glass substrate 101 Butt sealings, be coated in the first fluorescence coating 110 on the first glass substrate 100 inboards, be coated in the second fluorescence coating 111 on the second glass substrate 101 inboards, position at close the first fluorescence coating 110 in the two ends of sealed chamber and the second fluorescence coating 111 is provided with the first electrode 120 and the second electrode 121, is filled in Ne-Ar mixed gas and mercury vapour 130 in the sealed chamber.The high voltagehigh frequency electric field is added on the first electrode 120 and the second electrode 121, utilize the effect of electric field to make the electronics in the negative electrode be converted into kinetic energy to energy of position and outwards emission, electronics penetrates rear and mercury atom bumps, mercury atom obtains energy jump to higher energy level, because excited state is unstable, so mercury atom can be got back to stable state (low-lying level), the generation ultraviolet light that releases energy, described ultraviolet light produces visible light after fluorescence coating absorbs.
But the visible light that existing cold cathode fluorescent lamp is sent can not keep a direction to penetrate, so that the ray density of sending has very large difference, be that the light that sends of existing cold cathode fluorescent lamp is inhomogeneous, and the backlight of liquid crystal indicator goes for the uniform planar light of brightness, the visible light that then needs to use light guide plate, sheet emitting etc. that cold cathode fluorescent lamp is sent is changed, and has so reduced the utilance of back light source brightness and light.
Summary of the invention
The object of the present invention is to provide a kind of planar emission apparatus, be used for providing the planar light that has good uniformity.
Planar emission apparatus provided by the invention comprises: docking forms first substrate and the second substrate of sealed chamber, be arranged on described sealed chamber two ends the first electrode be connected electrode and respectively with described the first electrode be connected two outer leads that electrode is connected, be filled in inert gas and discharge gas in the described sealed chamber; Wherein,
Described first substrate comprises: the first glass substrate, be positioned at the first reflector on described the first glass substrate inner surface, and be positioned at the light collecting layer on described the first reflector, be positioned at the fluorescence coating on the described light collecting layer;
Described second substrate comprises: the second glass substrate and be positioned at the second reflector on described the second glass substrate inner surface.
Preferably, in the above-mentioned planar emission apparatus, described inert gas is argon gas or Ne-Ar mixed gas.
Preferably, in the above-mentioned planar emission apparatus, described discharge gas is mercury vapour, xenon or Ne-Xe mixture body.
Preferably, in the above-mentioned cold-smoothing surface illuminating device, described inert gas is argon gas, and described discharge gas is the neon xenon.
Preferably, in the above-mentioned planar emission apparatus, described the first electrode and the second electrode are strip electrode, and material is monel.
Preferably, in the above-mentioned planar emission apparatus,, described protective layer material is polyacrylic acid.
Preferably, in the above-mentioned planar emission apparatus, described the first reflector material is titanium dioxide.
Preferably, in the above-mentioned planar emission apparatus, described the second reflector material is nickel.
Preferably, in the above-mentioned planar emission apparatus, further comprise the protective layer between described the first glass substrate and described the first reflector.
The present invention also provides a kind of backlight simultaneously, comprises the planar emission apparatus with above-mentioned technical characterictic.
The present invention also provides a kind of liquid crystal indicator simultaneously, comprises the backlight with above-mentioned technical characterictic.
From technique scheme as can be known, planar emission apparatus provided by the invention, when having the high voltagehigh frequency electric field to be added in the first electrode and the second electrode, the electrons and the discharge gas atom that penetrate bump, guiding discharge gas atom generation energy jump and send ultraviolet light, and a described ultraviolet light part is converted into visible light through the fluorescent material absorption, visible light is converged by light collecting layer, in addition, visible scattering of light also can be reduced in the first reflector, penetrates from the first glass substrate; Another part to described fluorescence coating, repeats said process through the second reflective layer reflects, finally is converted into visible light and evenly penetrates from the first glass substrate.As seen, planar emission apparatus provided by the invention utilizes the first reflector and the second reflector, has reduced ultraviolet light and visible scattering of light, and the simultaneously effect by light collecting layer is converged uniformly light and penetrated from the first glass substrate.Therefore, compared with prior art, planar emission apparatus provided by the invention can provide the planar light that has good uniformity.
Description of drawings
Fig. 1 is the cutaway view of cold cathode fluorescent lamp in the prior art;
Fig. 2 is the cutaway view of embodiment of the invention midplane light-emitting device.
Embodiment
In the existing cold cathode fluorescent lamp, mercury atom is got back to stable state from high level under the excited state, the generation ultraviolet light can release energy, described ultraviolet light can be absorbed into visible light by the first fluorescence coating 110 and the second fluorescence coating 111, visible light can penetrate from the first glass substrate 100 and the second glass substrate 101 both directions, can reduce like this luminous intensity of cold cathode fluorescent lamp.
In view of this, the invention provides a kind of planar emission apparatus, comprise: docking forms first substrate and the second substrate of sealed chamber, be arranged on described sealed chamber two ends the first electrode be connected electrode and respectively with described the first electrode be connected two outer leads that electrode is connected, be filled in inert gas and discharge gas in the described sealed chamber; Wherein,
Described first substrate comprises: the first glass substrate, be positioned at the first reflector on described the first glass substrate inner surface, and be positioned at the light collecting layer on described the first reflector, be positioned at the fluorescence coating on the described light collecting layer;
Described second substrate comprises: the second glass substrate and be positioned at the second reflector on described the second glass substrate inner surface.
When having the high voltagehigh frequency electric field to be added in the first electrode and the second electrode, the electrons and the discharge gas atom that penetrate bump, guiding discharge gas atom generation energy jump and send ultraviolet light, a described ultraviolet light part absorbs through fluorescent material and is converted into visible light, visible light is converged by light collecting layer, in addition, visible scattering of light also can be reduced in the first reflector, penetrates from the first glass substrate; Another part arrives described fluorescence coating through the second reflective layer reflects, repeat said process, finally being converted into visible light evenly penetrates from the first glass substrate, as seen, planar emission apparatus provided by the invention has reduced ultraviolet light and visible scattering of light, utilize simultaneously light collecting layer that light is evenly penetrated, thereby improved the uniformity of luminance of planar emission apparatus.
In order to make those skilled in the art better understand technical scheme of the present invention, below in conjunction with Figure of description the embodiment of the invention is described in detail.
As shown in Figure 2, be the cutaway view of embodiment of the invention midplane light-emitting device.This planar emission apparatus comprises: docking forms first substrate and the second substrate of sealed chamber, be arranged on described sealed chamber two ends the first electrode 260 be connected electrode 261 and respectively with the first electrode 260 be connected two outer leads (not shown in FIG.) that electrode 261 is connected, be filled in inert gas in the described sealed chamber and the mist 270 of discharge gas; Wherein,
First substrate comprises: the first glass substrate 200, be positioned at the first reflector 220 on described the first glass substrate 200 inner surfaces, and be positioned at the light collecting layer 230 on described the first reflector 220, be positioned at the fluorescence coating 240 on the described light collecting layer 230;
Described second substrate comprises: the second glass substrate 201 and be positioned at the second reflector 250 on described the second glass substrate 201 inner surfaces.Particularly,
Form in the sealed chamber at first substrate and second substrate docking, the first reflector 220, light collecting layer 230, fluorescence coating 240 are arranged on the first glass substrate 200 successively; Wherein,
Fluorescence coating 240 is used for absorbing ultraviolet light and is converted into visible light.
Light collecting layer 230 is used for the visible light that fluorescence coating produces is converged, thereby improves uniformity of light.
The first reflector 220 is also referred to as low reflection layer, is by titanium dioxide (TiO
2) material formation, for reducing the catadioptric of incident ray, reduce light losing; In addition, also can reduce visible scattering of light; Thereby improve planar emission apparatus luminosity and uniformity.
Preferably, have a protective layer 210 between the first glass substrate 200 and the first reflector 220, material is polyacrylic acid, for the protection of the first reflector 220, can also improve the adhesion between the coating simultaneously.
Being provided with 260, the second reflector 260, the second reflector at the second glass substrate 201 is the nickel reflector, is to be formed on the second glass substrate 201 by nickel chemical plating technology.
The material of the first electrode 260 and the second electrode 261 is monel, has good conductivity, non-oxidizability.With the first electrode 260 be connected the outer lead that is that electrode 261 is connected, in the surface-coated of outer lead anti-oxidation, low-melting gun-metal scolder is arranged, and the harmful metal elements such as not leaded in the outer lead, meet environmental protection concept.
The mist 270 that comprises inert gas and discharge gas is filled in the sealed chamber of first substrate and second substrate formation, and preferably, in mist 270, described inert gas is argon gas or Ne-Ar mixed gas; Described discharge gas is mercury vapour, xenon or Ne-Xe mixture body.Preferably, described inert gas is argon gas, and described discharge gas is the neon xenon.
It is worth mentioning that in the present embodiment, first substrate and second substrate are planar structure, form annular seal space by the fluid sealant docking; But be not limited to this, one of them substrate of first substrate and second substrate can have for the edge semi-closed structure of boss, cooperates with another substrate to form annular seal space.In addition, the appearance profile of the planar emission apparatus that present embodiment provides can be rectangular structure, also can be other appearance profile, only need to guarantee that the substrate at emergent light face place is that planar structure gets final product, preferably, the appearance profile of planar emission apparatus is rectangular structure, so is convenient to manufacture above-mentioned planar emission apparatus, also is convenient to planar emission apparatus is installed on the backlight.
The planar emission apparatus of said structure is luminous like this:
The first electrode 260 and the second electrode 261 at planar emission apparatus apply the high voltagehigh frequency electric field, utilize the effect of electric field to make the electronics in the negative electrode be converted into kinetic energy to energy of position and outwards emission, electronics penetrates rear and neon xenon-133 gas atom bumps, neon xenon-133 gas atom obtains energy jump to higher energy level, because excited state is unstable, so neon xenon-133 gas atom can be got back to stable state, the generation ultraviolet light can release energy from the high level to the low-lying level, part ultraviolet light is absorbed by fluorescence coating 240 and transforms the rear visible light that forms, light collecting layer 230 converges the visible light that fluorescence coating 240 produces, in addition, the first reflector 220 also can reduce visible scattering of light, thereby visible light is penetrated from the first glass substrate 200; Another part ultraviolet light reflexes to fluorescence coating 240 through the second reflector 260, repeat said process, visible light is concentrated from the first glass substrate 200 to be penetrated, reduced the loss of ultraviolet light and visible light, utilize simultaneously light collecting layer that light is evenly penetrated, thereby improved the uniformity of luminance of planar emission apparatus.
The present invention also provides a kind of backlight simultaneously, comprises the planar emission apparatus with above-mentioned technical characterictic.The light that sends because of planar emission apparatus is area source, does not therefore need the optics such as light guide plate and diffusion sheet in backlight, thereby has saved the production cost of backlight.
The present invention also provides a kind of liquid crystal indicator simultaneously, comprises the backlight with above-mentioned technical characterictic.Described liquid crystal indicator can be any product or parts with Presentation Function such as liquid crystal panel, Electronic Paper, LCD TV, liquid crystal display, DPF, mobile phone, panel computer.
In sum, planar emission apparatus provided by the invention, the discharge gas atom is at the ultraviolet light that produces when high level drops to low-lying level, part ultraviolet light is absorbed by fluorescence coating and transforms the rear visible light that forms, light collecting layer converges the visible light that fluorescence coating produces, in addition, the first reflector also can reduce visible scattering of light, thereby visible light is penetrated from the first glass substrate; Another part ultraviolet light arrives fluorescence coating through the second reflective layer reflects, repeat said process, visible light is concentrated to be penetrated from the first glass substrate, reduced the loss of ultraviolet light and visible light, therefore, compared with prior art, planar emission apparatus provided by the invention, reduced ultraviolet light and visible scattering of light by the first reflector and the second reflector, utilized simultaneously light collecting layer that light is evenly penetrated, thereby improved the uniformity of luminance of planar emission apparatus.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. a planar emission apparatus is characterized in that, comprising:
Docking forms first substrate and the second substrate of sealed chamber, be arranged on described sealed chamber two ends the first electrode be connected electrode and respectively with described the first electrode be connected two outer leads that electrode is connected, be filled in inert gas and discharge gas in the described sealed chamber; Wherein,
Described first substrate comprises: the first glass substrate, be positioned at the first reflector on described the first glass substrate inner surface, and be positioned at the light collecting layer on described the first reflector, be positioned at the fluorescence coating on the described light collecting layer;
Described second substrate comprises: the second glass substrate and be positioned at the second reflector on described the second glass substrate inner surface.
2. planar emission apparatus as claimed in claim 1 is characterized in that, described inert gas is argon gas or Ne-Ar mixed gas.
3. planar emission apparatus as claimed in claim 1 is characterized in that, described discharge gas is mercury vapour, xenon or Ne-Xe mixture body.
4. planar emission apparatus as claimed in claim 1 is characterized in that, described the first electrode and the second electrode are strip electrode, and material is monel.
5. planar emission apparatus as claimed in claim 1 is characterized in that, described protective layer material is polyacrylic acid.
6. planar emission apparatus as claimed in claim 1 is characterized in that, described the first reflector material is titanium dioxide.
7. planar emission apparatus as claimed in claim 1 is characterized in that, described the second reflector material is nickel.
8. such as the arbitrary described planar emission apparatus of claim 1-7, it is characterized in that, also comprise the protective layer between described the first glass substrate and described the first reflector.
9. a backlight is characterized in that, comprises each described planar emission apparatus such as claim 1-8.
10. a liquid crystal indicator is characterized in that, comprises backlight as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102793723A CN102867730A (en) | 2012-08-07 | 2012-08-07 | Plane light-emitting device, backlight source and liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102793723A CN102867730A (en) | 2012-08-07 | 2012-08-07 | Plane light-emitting device, backlight source and liquid crystal display device |
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| CN102867730A true CN102867730A (en) | 2013-01-09 |
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| CN2012102793723A Pending CN102867730A (en) | 2012-08-07 | 2012-08-07 | Plane light-emitting device, backlight source and liquid crystal display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842917A (en) * | 2016-04-20 | 2016-08-10 | 乐视控股（北京）有限公司 | Composite light guide plate, manufacturing method thereof, backlight module, display equipment and light box |
| CN110289254A (en) * | 2019-06-27 | 2019-09-27 | 京东方科技集团股份有限公司 | It is micro-led and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2107064U (en) * | 1990-07-21 | 1992-06-10 | 三星电管株式会社 | Flat-type cold cathode fluorescent lamp |
| US20070057612A1 (en) * | 2005-09-12 | 2007-03-15 | Au Optronics Corp. | Flourescent lamp and flat lamp |
| CN101047101A (en) * | 2006-03-30 | 2007-10-03 | 中华映管股份有限公司 | Planar light source device and forming method thereof |
| CN101517310A (en) * | 2006-09-28 | 2009-08-26 | 松下电器产业株式会社 | Illuminating device and display device |
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2012
- 2012-08-07 CN CN2012102793723A patent/CN102867730A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2107064U (en) * | 1990-07-21 | 1992-06-10 | 三星电管株式会社 | Flat-type cold cathode fluorescent lamp |
| US20070057612A1 (en) * | 2005-09-12 | 2007-03-15 | Au Optronics Corp. | Flourescent lamp and flat lamp |
| CN101047101A (en) * | 2006-03-30 | 2007-10-03 | 中华映管股份有限公司 | Planar light source device and forming method thereof |
| CN101517310A (en) * | 2006-09-28 | 2009-08-26 | 松下电器产业株式会社 | Illuminating device and display device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842917A (en) * | 2016-04-20 | 2016-08-10 | 乐视控股（北京）有限公司 | Composite light guide plate, manufacturing method thereof, backlight module, display equipment and light box |
| CN110289254A (en) * | 2019-06-27 | 2019-09-27 | 京东方科技集团股份有限公司 | It is micro-led and preparation method thereof |
| US11417797B2 (en) | 2019-06-27 | 2022-08-16 | Hefei Xinsheng Optoelectronics Technology Co., Ltd. | Micro light emitting diode and manufacture method therefor |
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Application publication date: 20130109 |