CN105739009A - Light guide plate and backlight module as well as manufacture method thereof and display device with same - Google Patents
Light guide plate and backlight module as well as manufacture method thereof and display device with same Download PDFInfo
- Publication number
- CN105739009A CN105739009A CN201610320202.3A CN201610320202A CN105739009A CN 105739009 A CN105739009 A CN 105739009A CN 201610320202 A CN201610320202 A CN 201610320202A CN 105739009 A CN105739009 A CN 105739009A
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- Prior art keywords
- light guide
- guide plate
- scattering
- netted dot
- scattering netted
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0065—Manufacturing aspects; Material aspects
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invetion provides a light guide plate and a backlight module as well as a manufacture method thereof and a display device with the same, belonging to the display technical field and aiming at solving the problems of an existing backlight module, including poor uniformity and poor chroma of emitted light and high probability of damage to a reflecting plate. Scattering netted dots of the light guide plate are adhesive and can be directly adhered to a reflecting plate, a blank region among of the scattering netted dots does not need an adhesive and is equivalent to an air layer, the area of an adhesive region is reduced, and consequently, the surface of the blank region is still a smooth surface, thus not damaging total reflection generated on an interface of the reflecting plate. Meanwhile, the consumption of an adhesive is reduced greatly, so that the production cost is saved, the loss of blue light is reduced, color bias is alleviated effectively, and the corrosion caused by the adhesive to the reflecting plate is weakened. The light guide plate is applicable to various backlight modules and display devices. The backlight module with the light guide plate provided by the embodiment can guarantee excellent uniformity of emitted light. By virtue of the light guide plate provided by the embodiment, the image quality of the display device can be enhanced.
Description
Technical field
The invention belongs to Display Technique field, be specifically related to a kind of light guide plate, backlight module and preparation method thereof, display device.
Background technology
Existing side entrance back module, as it is shown in figure 1, include light guide plate 2 and be positioned at the backlight 1 of light guide plate 2 side, wherein, outer surface printing at the light guide plate 2 of glass material is multiple has the scattering netted dot 3 of high reflectance and not extinction.When the light of backlight 1 outgoing is irradiated on each scattering netted dot 3 of light guide plate 2, diffuse-reflectance can be there is at scattering netted dot 3 place and be reflected sheet 5 and reflect and penetrate from the front of light guide plate 2, light line reflection schematic diagram is as in figure 2 it is shown, the light that the front of light guide plate 2 is penetrated is used for display panel illumination.Wherein, reflector plate 5 is generally directly pasted the face at light guide plate 2 with scattering netted dot 3 with sticker 4 by prior art.
Inventor have found that in prior art, at least there are the following problems:
(1) going out light homogeneity poor, the refractive index currently forming the glass material of light guide plate 2 is about 1.5, and general sticker 4 refractive index is about 1.4-1.5, the two refractive index very close；Use sticker 4 to be bonded on light guide plate 2 by whole for reflector plate 5, between reflector plate 5 and light guide plate 2, lack air layer.This makes existing glass light guide plate 2 mainly by the sticker 4 interface reflecting light adjacent with reflector plate 5, as it is shown on figure 3, rough due to this interface, had a strong impact on total reflection so that light cannot effectively conduct, has caused homogeneity excessively poor；
(2) colourity is poor, and the blue light of 450-470nm wavelength is had certain absorption by sticker 4, and the face of the scattering netted dot 3 having due to light guide plate 2 is coated with sticker 4, can increase the weight of blue light loss, cause colour cast.
(3) reflector plate 5 surface damage, reflector plate 5 main functional areas is not relative with scattering netted dot 3 region, and the face of the scattering netted dot 3 that light guide plate 2 has is coated with sticker 4, and it easily corrodes reflector plate 5, reflector plate 5 surface is caused damage, impact display picture.
Summary of the invention
The present invention is directed to existing backlight module and go out that light homogeneity is poor, the problem of colour difference, easy damaged reflector plate, it is provided that a kind of light guide plate, backlight module and preparation method thereof, display device.
Solve the technology of the present invention problem be the technical scheme is that
A kind of light guide plate, including plate body, reflector plate and multiple scattering netted dots of being located on the lower surface of described plate body, described scattering netted dot interval arranges and has caking property, and described reflector plate is only fixed on described plate body by scattering netted dot.
Preferably, the distribution density of the scattering netted dot of close light source is less than the distribution density of the scattering netted dot away from light source.
Preferably, described scattering netted dot includes scattering material and sticker, and described scattering material is located between described plate body and described sticker.
Preferably, the thickness of described sticker is less than the thickness of scattering material.
Preferably, described scattering netted dot includes the scattering material doped with sticker.
Preferably, described scattering material is ink, and described scattering netted dot is formed by ink screen painting.
Preferably, described sticker is 1:7～1:9 with the mass ratio of ink.
The present invention also provides for a kind of backlight module, and including backlight and light guide plate, described backlight is located at least one side of described light guide plate, and described light guide plate includes above-mentioned light guide plate.
The preparation method that the present invention also provides for a kind of backlight module, the step of described method includes: is formed on the plate body of light guide plate and multiple has close-burning scattering netted dot；The step directly bonding with described scattering netted dot by reflector plate.
Preferably, described formation on the plate body of light guide plate multiple have close-burning scattering netted dot and includes:
Print scattering material at plate body lower surface and described scattering material is solidified；
Described scattering material away from described plate body side surface formed sticker, obtain that there is close-burning scattering netted dot.
Preferably, the plate body of light guide plate is formed multiple there is close-burning scattering netted dot include:
Adulterate sticker in ink；
Adopt described ink to be formed at described plate body side surface printing and multiple there is close-burning scattering netted dot；
Described include directly bonding with described scattering netted dot for reflector plate:
Reflector plate is directly bonding with described scattering netted dot；
The plurality of scattering netted dot is solidified.
The present invention also provides for a kind of display device, including above-mentioned backlight module.
The scattering netted dot of the light guide plate of the present invention has caking property, this scattering netted dot can direct bonding reflector plate, white space between scattering netted dot is without sticker, being equivalent to white space is air layer, adhesive regions area reduces, the surface of such white space is still that smooth surface, will not destroy the total reflection that reflector plate interface occurs；Meanwhile, sticker consumption greatly reduces, and can not only save production cost, moreover it is possible to reduce blue light loss, is effectively improved colour cast, reduces the sticker corrosion to reflector plate.The light guide plate of the present invention is applicable to various backlight modules and display device, adopts the backlight module of the present embodiment light guide plate to go out light homogeneity excellent, adopts the present embodiment light guide plate can promote the picture quality of display device.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing backlight module；
Fig. 2 is existing backlight module light line reflection schematic diagram；
Fig. 3 is existing backlight module light refraction schematic diagram；
Fig. 4 is a kind of structural representation of the light guide plate of embodiments of the invention 1；
Fig. 5 is the partial structurtes schematic diagram of the light guide plate of embodiments of the invention 1；
Fig. 6 is the structural representation of the backlight module of embodiments of the invention 2；
Fig. 7 is the another kind of structural representation of the light guide plate of embodiments of the invention 1；
Fig. 8 is the another kind of partial structurtes schematic diagram of the light guide plate of embodiments of the invention 1；
Fig. 9 is a kind of preparation flow figure of the backlight module of embodiments of the invention 3；
Figure 10 is the another kind of preparation flow figure of the backlight module of embodiments of the invention 4；
Wherein, accompanying drawing is labeled as: 1, backlight；2, light guide plate；21, plate body；3, scattering netted dot；31, scattering material；4, sticker；5, reflector plate.
Detailed description of the invention
For making those skilled in the art be more fully understood that technical scheme, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment 1:
The present embodiment provides a kind of light guide plate 2, as Figure 4-8, including plate body 21, reflector plate 5 and multiple scattering netted dots 3 of being located on the lower surface of plate body 21, scattering netted dot 3 interval arranges and has caking property, reflector plate 5 is fixed on plate body 21 by scattering netted dot 3, is not provided with sticker in the gap of scattering netted dot 3.
The scattering netted dot 3 of the light guide plate 2 of the present embodiment has caking property, this scattering netted dot 3 can direct bonding reflector plate 5, white space between scattering netted dot 3 is without sticker 4, be equivalent to sticker 4 region area reduce, white space is air layer, the surface of such white space is still that smooth surface, will not destroy the total reflection that reflector plate 5 interface occurs；Meanwhile, sticker 4 consumption greatly reduces, and can not only save production cost, moreover it is possible to reduce blue light loss, is effectively improved colour cast, reduces the sticker 4 corrosion to reflector plate 5.The light guide plate 2 of the present invention is applicable to various backlight modules and display device, it is excellent that the backlight module adopting the present embodiment light guide plate 2 goes out light homogeneity, adopting the present embodiment light guide plate 2 can promote the picture quality of display device, this light guide plate 2 is applicable to the backlight module of the liquid crystal panel of various sizes.
In the specific implementation, the material of plate body 21 can be glass, polymethyl methacrylate (PMMA) or Merlon (PC) to the light guide plate 2 of the present embodiment, and it can also be other similar transparent materials certainly, does not limit at this.
Preferably, the distribution density of the scattering netted dot 3 of close light source is less than the distribution density of the scattering netted dot 3 away from light source.
That is, as shown in Figure 6, the relative density arranged near the scattering netted dot 3 of light source is smaller, the relative density arranged away from the scattering netted dot 3 of light source is larger, because light is propagated more remote, off-energy is more many, namely weaken compared near source region light away from the region of light source, but by arranging more scattering netted dot 3 in the region away from light source, so that the region away from light source is of substantially equal with the light near source region injection, and then can make the light for display panel illumination that light guide plate 2 front penetrates evenly.
Preferably, scattering netted dot 3 includes scattering material 31 and sticker 4, and scattering material 31 is located between plate body 21 and sticker 4.
Preferably, the thickness of sticker 4 is less than the thickness of scattering material 31.
As shown in Figure 4, Figure 5: being printed with scattering material 31 at plate body 21 lower surface, wherein lower surface refers to for the surface bonding with reflector plate 5；It is provided with sticker 4 away from the surface of plate body 21 side at scattering material 31；Reflector plate 5 is directly bonding with the sticker 4 of scattering netted dot 3.Wherein, the glue-line that the thickness of sticker 4 should not be too thick, a layer relatively thin, it is sufficient to reflector plate 5 is clung.
Certainly, the structure of scattering netted dot 3 is not limited to said structure.Such as: scattering netted dot 3 can adopt transparent, translucent or white heat molten type resin material, or it is mixed with the hot-melt resin material of other optical particle, as merged the polymethyl methacrylate (PMMA) etc. of TiO 2 particles.
Scattering netted dot 3 includes the scattering material 31 doped with sticker 4, and scattering material 31 is ink, and scattering netted dot 3 is formed by ink screen painting.
Preferably, sticker 4 is 1:7～1:9 with the mass ratio of ink.
As shown in Figure 7, Figure 8, ink is adopted for scattering material 31.Doped with sticker 4 in ink, therefore scattering netted dot 3 has viscosity；By directly bonding with scattering netted dot 3 for reflector plate 5.Wherein, when the mass ratio of sticker 4 and ink is within the scope of 1:7-1:9 can so that reflector plate 5 is clung by scattering netted dot 3, simultaneously without influence on the propagation of light.
It should be noted that; before the light guide plate 2 of the present embodiment is applied can first at the surface additional layer mould release membrance of sticker 4, to protect sticker 4, when this light guide plate 2 is mounted to use in backlight module by needs; mould release membrance is removed, reflector plate 5 is attached and reflector plate 5 can be clung.
Embodiment 2:
The present embodiment provides a kind of backlight module, and as shown in Figure 6, including light guide plate 2 and the backlight 1 being positioned at light guide plate 2 side of above-described embodiment, backlight 1 is located at a side of light guide plate 2, and wherein, reflector plate 5 is directly bonding with the scattering netted dot 3 of light guide plate 2.
Wherein, backlight 1 is specifically as follows light emitting diode (LED), it is also possible to for cold cathode fluorescence lamp (CCFL), it is also possible to for cold light display (ELD), does not limit at this.And it is possible to arrange a backlight 1 in the side of light guide plate 2, it is also possible to arrange multiple backlight 1；Furthermore, it is possible to arrange one or more backlight 1 in the side of light guide plate 2, it is also possible to all arrange one or more backlight 1 in the both sides of light guide plate 2, do not limit at this.
Additionally, backlight module can also include diffuser plate and brightening piece etc..
Embodiment 3:
The preparation method that the present embodiment provides the backlight module of a kind of embodiment 2, as it is shown in figure 9, comprise the following steps successively:
S01, print scattering material 31 scattering material 31 is solidified at plate body 21 lower surface.When scattering material 31 adopts UV ink, hardening time is 8-15s.
S02, scattering material 31 away from plate body 21 side surface formed sticker 4, obtain that there is close-burning scattering netted dot 3；Wherein, the thickness of sticker 4 should not be too thick, it is possible to controls the amount of sticker 4 so that scattering material 31 surface only forms glue-line one layer relatively thin, it is sufficient to clung by reflector plate 5.It should be noted that owing to sticker 4 and the scattering material 31 projection on plate body 21 are essentially identical, the half tone identical with scattering material 31 therefore can be adopted to form sticker 4.
S03, reflector plate 5 is directly bonding with scattering netted dot 3.
Embodiment 4:
The preparation method that the present embodiment provides the backlight module of a kind of embodiment 2, as shown in Figure 10, comprises the following steps successively:
S01, in ink adulterate sticker 4；Wherein, when the mass ratio of sticker 4 and ink is within the scope of 1:7～1:9 can so that reflector plate 5 is clung by scattering netted dot 3, simultaneously without influence on the propagation of light.
S02, adopt above-mentioned ink to be formed at plate body 21 side surface printing multiple to there is close-burning scattering netted dot 3.
S03, reflector plate 5 is directly bonding with scattering netted dot 3.
S04, multiple scattering netted dots 3 are solidified.When ink is UV ink, hardening time is 8-15s.
Obviously, also many modifications may be made to for the detailed description of the invention of the various embodiments described above；Such as: the scattering netted dot concrete density on plate body can according to specific product go out light intensity, emitting brightness is adjusted, the quantity of diffuser plate and brightening piece can increase and decrease as required, does not limit at this.
Embodiment 5:
Present embodiments providing a kind of display device, it includes any one backlight module above-mentioned.Described display device can be: any product with display function or the parts such as display panels, Electronic Paper, mobile phone, panel computer, television set, display, notebook computer, DPF, navigator.
It is understood that the principle that is intended to be merely illustrative of the present of embodiment of above and the illustrative embodiments that adopts, but the invention is not limited in this.For those skilled in the art, without departing from the spirit and substance in the present invention, it is possible to make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (12)
1. a light guide plate, including plate body, reflector plate and multiple scattering netted dots of being located on the lower surface of described plate body, it is characterised in that described scattering netted dot interval arranges and has caking property, and described reflector plate is only fixed on described plate body by scattering netted dot.
2. light guide plate according to claim 1, it is characterised in that the distribution density of the scattering netted dot of close light source is less than the distribution density of the scattering netted dot away from light source.
3. light guide plate according to claim 1, it is characterised in that described scattering netted dot includes scattering material and sticker, and described scattering material is located between described plate body and described sticker.
4. light guide plate according to claim 3, it is characterised in that the thickness of described sticker is less than the thickness of scattering material.
5. light guide plate according to claim 1, it is characterised in that described scattering netted dot includes the scattering material doped with sticker.
6. light guide plate according to claim 5, it is characterised in that described scattering material is ink, and described scattering netted dot is formed by ink screen painting.
7. light guide plate according to claim 6, it is characterised in that the mass ratio of described sticker and ink is 1:7～1:9.
8. a backlight module, including backlight and light guide plate, it is characterised in that described backlight is located at least one side of described light guide plate, and described light guide plate includes the light guide plate described in any one of claim 1-7.
9. the preparation method of a backlight module, it is characterised in that the step of described method includes:
The plate body of light guide plate is formed and multiple there is close-burning scattering netted dot；Reflector plate is directly bonding with described scattering netted dot.
10. the preparation method of backlight module according to claim 9, it is characterised in that described formation on the plate body of light guide plate multiple have close-burning scattering netted dot and include:
Print scattering material at plate body lower surface and described scattering material is solidified；
Described scattering material away from described plate body side surface formed sticker, obtain that there is close-burning scattering netted dot.
11. the preparation method of backlight module according to claim 9, it is characterised in that described formation on the plate body of light guide plate multiple have close-burning scattering netted dot and include:
Adulterate sticker in ink；
Adopt described ink to be formed at described plate body side surface printing and multiple there is close-burning scattering netted dot；
Described include directly bonding with described scattering netted dot for reflector plate:
Reflector plate is directly bonding with described scattering netted dot；
The plurality of scattering netted dot is solidified.
12. a display device, it is characterised in that include the backlight module described in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610320202.3A CN105739009A (en) | 2016-05-13 | 2016-05-13 | Light guide plate and backlight module as well as manufacture method thereof and display device with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610320202.3A CN105739009A (en) | 2016-05-13 | 2016-05-13 | Light guide plate and backlight module as well as manufacture method thereof and display device with same |
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| Publication Number | Publication Date |
|---|---|
| CN105739009A true CN105739009A (en) | 2016-07-06 |
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| CN201610320202.3A Pending CN105739009A (en) | 2016-05-13 | 2016-05-13 | Light guide plate and backlight module as well as manufacture method thereof and display device with same |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290817A (en) * | 2017-05-15 | 2017-10-24 | 苏州市商祺光电有限公司 | A kind of manufacture craft of glass light guide plate and its application |
| CN108627908A (en) * | 2018-05-11 | 2018-10-09 | 厦门光莆电子股份有限公司 | Modular light conducting plate |
| CN108663857A (en) * | 2017-03-30 | 2018-10-16 | 群创光电股份有限公司 | Show equipment |
| WO2019119719A1 (en) * | 2017-12-18 | 2019-06-27 | 青岛海信电器股份有限公司 | Bonding structure for light guide plate and reflective sheet, bonding method and liquid crystal display device |
| CN110133793A (en) * | 2019-05-30 | 2019-08-16 | 深圳创维－Rgb电子有限公司 | A kind of light guiding film and display device |
| CN110308511A (en) * | 2019-06-29 | 2019-10-08 | 深圳创维－Rgb电子有限公司 | A kind of light guide structure, side entrance back module and display equipment |
| CN111381309A (en) * | 2018-12-31 | 2020-07-07 | 现代自动车株式会社 | Backlight unit for flat lighting device with improved flexibility and method of manufacturing the same |
| CN111640370A (en) * | 2020-06-29 | 2020-09-08 | 京东方科技集团股份有限公司 | Bonding structure, display device, and bonding method for display device |
| CN111722734A (en) * | 2019-03-20 | 2020-09-29 | 群光电能科技股份有限公司 | Light-emitting touch panel device |
| US11300726B1 (en) * | 2021-02-08 | 2022-04-12 | JRD Communication (Shenzhen) Ltd. | Display module and display device |
| CN114923154A (en) * | 2022-05-26 | 2022-08-19 | 福耀玻璃工业集团股份有限公司 | Optical assembly and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108663857A (en) * | 2017-03-30 | 2018-10-16 | 群创光电股份有限公司 | Show equipment |
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| CN110133793A (en) * | 2019-05-30 | 2019-08-16 | 深圳创维－Rgb电子有限公司 | A kind of light guiding film and display device |
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| CN110308511A (en) * | 2019-06-29 | 2019-10-08 | 深圳创维－Rgb电子有限公司 | A kind of light guide structure, side entrance back module and display equipment |
| CN110308511B (en) * | 2019-06-29 | 2021-09-28 | 深圳创维－Rgb电子有限公司 | Light guide structure, side-in backlight module and display device |
| CN111640370A (en) * | 2020-06-29 | 2020-09-08 | 京东方科技集团股份有限公司 | Bonding structure, display device, and bonding method for display device |
| US11300726B1 (en) * | 2021-02-08 | 2022-04-12 | JRD Communication (Shenzhen) Ltd. | Display module and display device |
| CN114923154A (en) * | 2022-05-26 | 2022-08-19 | 福耀玻璃工业集团股份有限公司 | Optical assembly and vehicle |
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Application publication date: 20160706 |