CN101205357A - Light reflector element, electron device having the same and manufacturing method thereof - Google Patents
Light reflector element, electron device having the same and manufacturing method thereof Download PDFInfo
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- CN101205357A CN101205357A CNA2006101680614A CN200610168061A CN101205357A CN 101205357 A CN101205357 A CN 101205357A CN A2006101680614 A CNA2006101680614 A CN A2006101680614A CN 200610168061 A CN200610168061 A CN 200610168061A CN 101205357 A CN101205357 A CN 101205357A
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Abstract
The invention provides a filmily compound material consisting of optics reflection unit and light reflection macromolecule with back light module of the optics reflection unit, the digital electronic device of the optics reflection unit and the preparation method which comprises at least a filmily matrix phase material, a first reflection structure and a second reflection structure. The second reflection structure is the inorganic filler spreaded in the matrix phase material. The second reflection structure comprises at least one organic high molecular weight polymer with high light reflectivity different from the matrix phase material mixed in the matrix material. The second reflection structure stretched by the single axle or two axles to form the plate added with a high light reflectivity is able to enhance the light reflection efficiency of the finished product effectively and save the used amount of the inorganic padding so as to reduce the production cost of the light reflection plate and the back light module.
Description
Technical field
The present invention relates to a kind of film like optical reflection unit, luminous reflectance polymer composite, backlight module, digital electronic device and manufacture method thereof with optical reflection unit with this optical reflection unit, be particularly related to a kind of being applied in the luminous reflectance matrix phase material (matrix phase material), with mineral filler and organic high molecular polymer as disperse phase (dispersed phase) luminous reflectance particle, thereby promote the optical reflectance coating or the luminous reflectance polymer composite of light source reflection performance.
Background technology
In recent years, light-reflecting sheet is widely used in various fields, particularly relevant with lcd technology Personal Computer, mobile communication equipment or LCD TV etc.For the use that cooperates liquid crystal display product slimming, maximization and energy-conservationization needs, and make the back light unit of being located in the liquid-crystal display produce optimized smooth uniformity coefficient, reflector plate is on structure design and material selection, must allow light after back light unit enters reflector plate, have the highest total reflection efficient, could satisfy colour liquid crystal display device in the qualitative high requirement of briliancy.
For satisfying the use needs of colour liquid crystal display device high-reflectivity, the numerous and confused solution of releasing many moneys enhancement reflectivity of each producer.United States Patent (USP) notification number the 6th, 908,646 discloses a kind of heterogeneity scattering film (Anisotropic scattering film) that is used for liquid-crystal display and is used to improve brightness (brightness) and briliancy (luminance).This heterogeneity scattering film is made of the matrix phase polymkeric substance of island structure (seaisland structure) and the disperse phase polymer substance that is dispersed between the matrix phase polymkeric substance, the axial length (greater than 800nm), diameter (less than 200nm) and the distribution that see through control disperse phase polymer substance are axial, can improve the luminous reflectance factor of scattering film for light source.But therefore the heterogeneity scattering film is not suitable for using in transparence requiring almost nil total reflection environment, so can't be used as reflector plate also just because of have high optical transmittance and splendid scattering power.
In traditional light-reflecting sheet manufacture method, be most commonly used to improve the method for luminous reflectance factor, be in the matrix phase macromolecular material, to add inorganic particulates (inorganic fillers) such as TiO2 or lime carbonate, replacing reflector plate matrix phase material (for example using porous resin), or with stretch, the foaming mode forms hole between macromolecule resin material, in view of the above by inorganic particulate or the different surfac topography of hole, allow light reduce to penetrate and reach total reflection as much as possible.Wherein, the method for normal use is to be added into the matrix phase polymkeric substance with inorganic particulate to make light-reflecting sheet.Yet, add inorganic particulates such as titanium dioxide, often because rigidity (stiffness) restriction can't heavy addition and cause reflectivity to help not quite on enhancing efficiency.US5 for example; 710; 856 also once disclosed a kind of optical reflection film structure with porous resin and a protective layer; in porous resin, be added with the titanium oxide inorganic particulate of 100 to 300 weight percents; but the cost of titanium dioxide is high, does not also meet the trend of the market of colour liquid crystal display device price competition.
Therefore, actively seek the colour liquid crystal display device field, the equivalent material of light-reflecting sheet and technology, and further overcome the insufficient problem of reflector plate material luminous reflectance factor, become the important topic that industry need solve.
Summary of the invention
The present invention is in order to solve the problem of above-mentioned prior art, the invention provides a kind of luminous reflectance unit (Reflecting unit), comprise at least a laminar matrix phase material (matrix phase material), first light reflection structure and second light reflection structure, wherein this first light reflection structure is the mineral filler (inorganic filler) that is scattered in this matrix phase material, this second light reflection structure is made of at least a high molecular polymer that is different from this matrix phase material, and fusion is in this matrix phase material, thereby makes this luminous reflectance unit reach more than 95% at the luminous reflectance factor (light reflectance) of optical source wavelength 550nm.
The present invention is except that disclosing above-mentioned luminous reflectance unit, also comprise a kind of luminous reflectance polymer composite, luminous reflectance sheet material, luminous reflectance sheet material manufacture method, use this luminous reflectance unit or luminous reflectance polymer composite backlight module, use direct type backlight module manufacture method, the lamp box module of this luminous reflectance unit or luminous reflectance polymer composite, and use in above-mentioned luminous reflectance unit, luminous reflectance polymer composite, backlight module or the lamp box module any one digital electronic device and manufacture method thereof at least.
Wherein, this luminous reflectance unit also comprises at least a matrix phase material (matrix phasematerial), first light reflection structure and second light reflection structure, this first light reflection structure is the mineral filler (inorganic filler) that is scattered in this matrix phase material, this second light reflection structure is made of at least a high molecular polymer that is different from this matrix phase material, and fusion is in this matrix phase material.Similarly, luminous reflectance polymer composite wood of the present invention and manufacture method thereof comprise following steps as previously mentioned at least:
(a). prepare a kind of matrix phase material, first light reflection structure and second light reflection structure, wherein this first light reflection structure is the mineral filler that is scattered in this matrix phase material, and this second light reflection structure is made of at least a high molecular polymer that is different from this matrix phase material;
(b). this second light reflection structure of fusion is to this matrix phase material and form laminar sheet material; And
(c). with uniaxial extension and biaxial stretch-formed at least a mode extend this laminar sheet material, make this sheet material reach more than 95% at the luminous reflectance factor of optical source wavelength 550nm.
Because the luminous reflectance unit of the embodiment of the invention, luminous reflectance polymer composite and backlight module, in the matrix phase material except being mixed with mineral filler, also have other to be different from high-reflectivity second light reflection structure of matrix phase material, even if therefore be subjected to the material behavior restriction, can't add mineral filler to desired amount, luminous reflectance of the present invention unit, luminous reflectance polymer composite and backlight module still can see through the luminous reflectance efficient that second light reflection structure significantly improves finished product, and save the usage quantity of titanium dioxide and other type mineral filler synchronously, thereby reduce the manufacturing cost of luminous reflectance sheet material and backlight module.
Therefore, main purpose of the present invention is to provide a kind of luminous reflectance unit that reduces cost and improve reflector plate luminous reflectance efficient.
Another purpose of the present invention is to provide a kind of luminous reflectance polymer composite that reduces cost and improve reflector plate luminous reflectance efficient.
Another purpose of the present invention is to provide a kind of luminous reflectance sheet material that reduces cost and improve reflector plate luminous reflectance efficient.
Another purpose of the present invention is to provide a kind of luminous reflectance sheet material manufacture method that reduces cost and improve reflector plate luminous reflectance efficient.
Another purpose of the present invention is to provide a kind of direct type backlight module that reduces cost and improve reflector plate luminous reflectance efficient.
Another purpose of the present invention is to provide a kind of side light type back light module that reduces cost and improve reflector plate luminous reflectance efficient.
Another purpose of the present invention is to provide a kind of backlight module manufacture method that reduces cost and improve reflector plate luminous reflectance efficient.
Another purpose of the present invention is to provide a kind of lamp box module that reduces cost and improve reflector plate luminous reflectance efficient.
At least any one digital electronic device is provided to provide in a kind of application luminous reflectance unit, luminous reflectance polymer composite, luminous reflectance sheet material, direct type backlight module, side light type back light module or the lamp box module another purpose of the present invention, thereby reduces cost and improve the luminous reflectance efficient of reflector plate.
Another purpose of the present invention is to provide a kind of and uses in luminous reflectance unit, luminous reflectance polymer composite, luminous reflectance sheet material, direct type backlight module, side light type back light module or the lamp box module any one digital electronic device manufacture method at least, thereby reduces cost and improve the luminous reflectance efficient of reflector plate.
Below in conjunction with accompanying drawing, the concrete enforcement of inventing is described in further detail.For the person of ordinary skill in the field, from detailed description of the invention, above-mentioned and other purposes of the present invention, feature and advantage will be apparent.
Description of drawings
Fig. 1 is an enlarged diagram, in order to light-reflecting sheet or the optical reflectance coating (light reflective sheet or light reflective film) that shows that first embodiment of the invention provided.
Fig. 2 is a sectional view, is applied to the section schematic construction of direct type backlight module in order to show light-reflecting sheet of the present invention, light source reflectance coating or luminous reflectance polymer composite.
Fig. 3 is a sectional view, is applied to the section schematic construction of side light type back light module in order to show light-reflecting sheet of the present invention, light source reflectance coating or luminous reflectance polymer composite.
Fig. 4 is a local enlarged diagram, be assembled on the portable computer in order to the backlight module that shows light-reflecting sheet of the present invention, light-reflecting sheet in this portable computer and the liquid-crystal display that possesses thereof, backlight module of the present invention and the backlight module, each local schematic construction partly.
Fig. 5 is a schema, in order to show the manufacturing process of luminous reflectance of the present invention unit, luminous reflectance polymer composite, luminous reflectance sheet material.
Fig. 6 is a schema, in order to show the manufacturing process of direct type backlight module of the present invention.
The main element description of symbols
Light-reflecting sheet or light source reflectance coating 1,44
Laminar sheet material 53,63
First light reflection structure 11,51,61,241,341,441
Second light reflection structure 12,52,62,242,342,442
Direct type backlight module 2,42
Side light type back light module 3,42
Liquid-crystal display 40
Liquid Crystal Module 41
Non-homogeneous phase scattering film 7
Matrix phase polymer 70
Disperse phase polymer substance 72
Embodiment
Because the present invention discloses a kind of luminous reflectance unit, luminous reflectance polymer composite, luminous reflectance sheet material, direct type backlight module, side light type back light module or lamp box module; And use these luminous reflectance unit, the luminous reflectance polymer composite, luminous reflectance sheet material, the various digital electronic device of backlight module or lamp box module, comprise digital electronic device with liquid crystal display, liquid-crystal display for example, duplicating machine, projection display apparatus, facsimile recorder, office's Multi Role Aircraft, high definition television (HDTV), the automobile liquid crystal TV, portable computer (Portable computer), desk-top computer (DesktopComputer), DMB device (DMB), electronic game machine, electron storage display media (for example e-book), the mobile communication transmission equipment, such as mobile phone, PDA, auto-navigation system (GPS), indicating system (POS) is sold in the shopping of ordering, ticket query system (POI), OK a karaoke club ok order programme, visual telephone (Video Phone) and hand held data handler, the digital advertisement billboard, video wall, bank finance Automatic Teller Machine (ATM), any luminous reflectance ultimate principle of utilizing and digital product basic frameworks such as stock exchange trading system and scenic spot guide system, be that the person of ordinary skill in the field can understand, so, no longer do complete description with explanation hereinafter.Simultaneously, with the accompanying drawing that is hereinafter contrasted, be to express the structural representation relevant with feature of the present invention, do not need according to the complete drafting of physical size yet, why not chats bright earlier.
First embodiment
Fig. 1 is expression light-reflecting sheet provided by the present invention or optical reflectance coating (light reflectivesheet or light reflective film) enlarged diagram.As shown in the figure, light-reflecting sheet of the present invention or light source reflectance coating 1 include at least a laminar matrix phase material 10 (matrix phasematerial), first light reflection structure 11 and second light reflection structure 12, this first light reflection structure 11 is for being scattered in the mineral filler (inorganic fillers) in this matrix phase material 10, this second light reflection structure 12 is made of at least a high molecular polymer that is different from this matrix phase material 10, and fusion is in this matrix phase material 10, thereby makes this luminous reflectance unit reach more than 95% at the luminous reflectance factor (light reflectance) of optical source wavelength 550nm.
As shown in Figure 1, the matrix phase material 10 that above-mentioned light-reflecting sheet or light source reflectance coating 1 are adopted is selected from polycarbonate (Polycarbonate), polypropylene (Polypropylene), methyl methacrylate and styrol copolymer (Methyl Methacrylate Styrene Copolymer), polystyrene (Polystyrene), terephthalate second diester (Polyethylene Terephthalate), polyethylene (Polyethylene), single or the compound constituent of tNonwovens or polyolefine (Polyolefin) also can be other and has single shaft and stretch and draw or twin shaft is stretched the polycarbonate that draws characteristic.The high molecular polymer of this second light reflection structure 12, the preferably has column (rod-like) configuration, spherical (spherical) configuration or island (sea island) configuration, also can be and have porous resin (porous resin), wherein the preferable rubber (rubber) that can be natural origin or synthetic source of resin material, polyethylene (polyethylene), high density polyethylene(HDPE) (high-density polyethylene), new LDPE (film grade) (low-densitypolyethylene) or other have the organic polymer or the mixture of high light reflectivity rate.
Learn that through experimental simulation when this matrix phase material 10 (matrix phase material) when being polycarbonate (Polycarbonate), these second light reflection structure, 12 better embodiment are rubber; And when this matrix phase material 10 (matrix phase material) when being polypropylene (Polypropylene), this second light reflection structure 12 is the wherein a kind of or arbitrary combination of polyethylene (Polyethylene), high density polyethylene(HDPE) (high-densitypolyethylene), new LDPE (film grade) (low-density polyethylene), and can reach 98% or higher at the luminous reflectance factor of optical source wavelength 550nm.
Secondly, as shown in Figure 1, light-reflecting sheet of the present invention or light source reflectance coating 1 are in the 11 employed mineral fillers of first light reflection structure, and the preferred embodiment on material is selected is selected from barium sulfate (BaSO
4), calcium sulfate (CaSO
4), sal epsom (MgSO
4), the inferior aluminium (AlSO of sulfuric acid
4), magnesium chloride (MgCl
2), titanium dioxide (TiO
2), magnesiumcarbonate (MgCO
3), lime carbonate (CaCO
3), barium carbonate (BaCO
3), zinc oxide (ZnO), magnesium oxide (MgO) and aluminum oxide (Al
2O
3) in any one or other combination.Especially barium sulfate (BaSO
4), calcium sulfate (CaSO
4) and titanium dioxide (TiO
2), because of having stronger obstruct light penetrativity, the lost degree of light source reflectivity height and light source is low, and therefore, the mineral filler of first embodiment of the invention is with barium sulfate (BaSO
4), calcium sulfate (CaSO
4) or titanium dioxide (TiO
2) as the preferred forms of first light reflection structure 11.
As further observation first embodiment; as shown in Figure 1; outside can not needing, the present invention covers material to this matrix phase material surface; perhaps can lay layer protective layer 13 (protective layer) on these matrix phase material 10 surfaces and be used for intercepting UV light or the interference of other water dust; in the selection of these protective layer 13 materials, light-reflecting sheet of the present invention or light source reflectance coating 1 allow to use polyester resin (Polyesterresin); acid polyethylene resin (Polyvinyl acetate resin); polyacrylic resin (Polyacrylateresin); any in polyamide resin (Polyamide resin) and other the similar constituent.
Because the light-reflecting sheet or the light source reflectance coating 1 of the embodiment of the invention, in matrix phase material 10 except being mixed with mineral filler, also have other to be different from high-reflectivity second light reflection structure 12 of matrix phase material 10, even if therefore be subjected to the material behavior restriction, can't add mineral filler to desired amount, light-reflecting sheet 1 of the present invention still can see through the luminous reflectance efficient that second light reflection structure 12 significantly improves finished product, and save the usage quantity of titanium dioxide or aforementioned other mineral filler synchronously, further reduce the manufacturing cost of backlight module light-reflecting sheet.
Second embodiment:
Please refer to Fig. 2 and Fig. 3, illustrate that light-reflecting sheet of the present invention, light source reflectance coating or luminous reflectance polymer composite are applied to the backlight modular structure sectional view of direct type backlight module (Fig. 2) and side light type back light module (Fig. 3).As shown in the figure, this direct type backlight module 2 and side light type back light module 3 consist predominantly of lighting unit 22,32 (Lighting unit), luminous reflectance unit 24,34 (Reflecting unit) and light diffusion unit 26,36 (Diffusing unit), both differences are only in the position of lighting unit 22,32 difference.The lighting unit 32 of side light type back light module 3 is arranged at the side of luminous reflectance unit 34, by light guiding plate 35 light source is directed to this light diffusion unit 36 and allows briliancy (luminance) and brightness (brightness) improve, the lighting unit 22 of direct type backlight module 2 then is arranged between luminous reflectance unit 24 and the light diffusion unit 26.Wherein, this lighting unit 22 can be the optical fiber composition (Optical fiber assembly) that cold-cathode fluorescence lamp (CCFL), hot-cathode fluorescent lamp (HCFL), photodiode array (LEDArray) or surface have indentation, and this light diffusion unit 26 then can be diffuser plate (diffuser).
As aforementioned first embodiment, the employed luminous reflectance of backlight module of the present invention unit 24,34 comprise at least a matrix phase material 240,340 (matrix phase material), first light reflection structure 241,341 and second light reflection structure 242,342, this first light reflection structure 241,341 for being scattered in the inorganic filler (inorganic filler) in this matrix phase material 240,340, this second light reflection structure 242,342 by at least a this matrix phase material 240 that is different from, 340 high molecular polymer constitutes, and fusion is in this matrix phase material 240,340.Matrix phase material 240,340, first light reflection structure 241,341 and second light reflection structure 242,342 that present embodiment adopted all are equal to aforementioned first embodiment, so no longer repeat.But what deserves to be mentioned is, the luminous reflectance material of present embodiment further uses uniaxial extension or biaxial stretch-formed mode to extend sheet material, difference based on ductility between the unlike material, stretching can cause first light reflection structure 241,341, second light reflection structure 242,342 and matrix phase material 240,340 of engaging around it between have the slit to produce and promote that light reflects fully, cause the luminous reflectance unit to reach more than 95% at the luminous reflectance factor (light reflectance) of optical source wavelength 550nm.
The 3rd embodiment
With reference to the backlight modular structure of figure 2 and Fig. 3, can illustrate that also light-reflecting sheet of the present invention, light source reflectance coating or luminous reflectance polymer composite are applied to the structural representation of lamp box module.Each parts of this lamp box module and direct type backlight module shown in Figure 2 and side light type back light module shown in Figure 3 are all corresponding identical, represent so present embodiment is also numbered with same components.As shown in the figure, lamp box module structure 2,3 consist predominantly of lighting unit 22,32 (Lighting unit), luminous reflectance unit 24,34 (Reflecting unit) and light diffusion unit 26,36 (Diffusing unit), this lighting unit 32 can be arranged at the side of luminous reflectance unit 34, or lighting unit 32 is arranged between luminous reflectance unit 24 and the light diffusion unit 26.Wherein, this lighting unit 22,32 can be the optical fiber composition (Optical fiber assembly) that cold-cathode fluorescence lamp (CCFL), hot-cathode fluorescent lamp (HCFL), photodiode array (LED Array) or surface have indentation, and 26,36 of this light diffusion units can be diffuser plate.
As aforementioned first and second embodiment, lamp box module 2 of the present invention, 3 employed luminous reflectance unit 24,34 comprise at least a matrix phase material 240,340 (matrix phase material), first light reflection structure 241,341 and second light reflection structure 242,342, this first light reflection structure 241,341 is for being scattered in this matrix phase material 240, mineral filler (inorganic filler) in 340, this second light reflection structure 242,342 is made of at least a high molecular polymer that is different from this matrix phase material 240,340, and fusion is in this matrix phase material 240,340.Matrix phase material 240,340, first light reflection structure 241,341 and second light reflection structure 242,342 that only present embodiment adopted all are equal to aforementioned two embodiment, so no longer repeat to give unnecessary details.
The 4th embodiment:
The described luminous reflectance of previous embodiment of the present invention unit, the luminous reflectance polymer composite, luminous reflectance sheet material, backlight module or lamp box module also show and easily know in the liquid crystal indicator that can be applied in various digital electronic device, such as any digital electronic device with liquid crystal display, liquid-crystal display for example, duplicating machine, projection display apparatus, facsimile recorder, office's Multi Role Aircraft, high definition television (HDTV), the automobile liquid crystal TV, portable computer (Portable computer), desk-top computer (Desktop Computer), DMB device (DMB), electronic game machine, electron storage display media (e-book for example, electronic card or electronic memo), the mobile communication transmission equipment, such as mobile phone, PDA, auto-navigation system (GPS), indicating system (POS) is sold in the shopping of ordering, ticket query system (POI), OK a karaoke club ok order programme, visual telephone (Video Phone) and hand held data handler, the digital advertisement billboard, video wall, bank finance ATM (automatic teller machine) (ATM), stock exchange trading system and scenic spot guide system etc. are any, and all available Fig. 4 schematic construction of annexation between its digital electronic device and liquid crystal indicator and the luminous reflectance of the present invention unit is in like manner represented.
Please refer to Fig. 4.Fig. 4 is to be example with portable computer (portable computer), illustrate that the backlight module with light-reflecting sheet of the present invention is assembled in the portable computer, the local enlarged diagram of each part of the light-reflecting sheet in this portable computer and the liquid-crystal display (liquid crystal display) that possesses thereof and backlight module of the present invention and the backlight module.As shown in the figure, the liquid-crystal display 40 on the portable computer 4 comprises a Liquid Crystal Module 41 and a backlight module 42, and wherein, this backlight module 42 can adopt straight-down negative or side-light type structure.As aforementioned first to the 3rd embodiment, backlight module 42 employed light-reflecting sheets of the present invention or light source reflectance coating 44 comprise at least a matrix phase material 440 (matrix phase material), first light reflection structure 441 and second light reflection structure 442, this first light reflection structure 441 is for being scattered in the inorganic filler (inorganic filler) in this matrix phase material 440, this second light reflection structure 442 is made of at least a high molecular polymer that is different from this matrix phase material 440, and fusion is in this matrix phase material 440.Matrix phase material 440, first light reflection structure 441 and second light reflection structure 442 that only present embodiment adopted all are equal to aforementioned first embodiment, so no longer repeat to give unnecessary details.
Above-mentioned first to fourth embodiment has clearly demonstrated luminous reflectance of the present invention unit, luminous reflectance polymer composite, luminous reflectance sheet material, direct type backlight module, side light type back light module or lamp box module; And the various digital electronic device of using these luminous reflectance unit, luminous reflectance polymer composite, luminous reflectance sheet material, backlight module or lamp box module.Manufacture method with next further teaching luminous reflectance of the present invention unit, luminous reflectance polymer composite, luminous reflectance sheet material and direct type backlight module.
The 5th embodiment:
Fig. 5 and Fig. 6 are the manufacturing process synoptic diagram that shows luminous reflectance of the present invention unit, luminous reflectance polymer composite, luminous reflectance sheet material (Fig. 5) and direct type backlight module (Fig. 6) respectively.
As shown in Figure 5, the manufacture method of luminous reflectance sheet material of the present invention may further comprise the steps:
(a). please refer to step S10, prepare at least a matrix phase material 50, first light reflection structure 51 and second light reflection structure 52, wherein this first light reflection structure 51 is for being scattered in the mineral filler (inorganic filler) in this matrix phase material 50, and this second light reflection structure 52 is made of at least a high molecular polymer that is different from this matrix phase material 50;
(b). please refer to step S11, this first light reflection structure 51 of fusion and second light reflection structure 52 be to this matrix phase material 50, and form laminar sheet material 53; And
(c). please refer to step S12, extend this laminar sheet material 53, make this sheet material 53 reach more than 95% at the luminous reflectance factor (light reflectance) of optical source wavelength 550nm with uniaxial extension and biaxial stretch-formed at least a mode.
The matrix phase material 50 that above-mentioned luminous reflectance sheet material adopts is selected from the single or compound constituent of polycarbonate (Polycarbonate), polypropylene (Polypropylene), methyl methacrylate and styrol copolymer (MethylMethacrylate Styrene Copolymer), polystyrene (Polystyrene), terephthalate second diester (Polyethylene Terephthalate), polyethylene (Polyethylene), tNonwovens or polyolefine (Polyolefin), also can be other and has single shaft and stretch and draw or twin shaft is stretched the polycarbonate that draws characteristic.The high molecular polymer of this second light reflection structure 52, the preferably has column (rod-like) configuration, spherical (spherical) configuration or island (sea island) configuration, also can be and have porous resin (porous resin), wherein the preferable rubber (rubber) that can be natural origin or synthetic source of resin material, polyethylene (polyethylene), high density polyethylene(HDPE) (high-densitypolyethylene), new LDPE (film grade) (low-density polyethylene) or other have the organic polymer or the mixture of high light reflectivity rate.When this matrix phase material 50 (matrix phase material) when being polycarbonate (polycarbonate), the better embodiment of this second light reflection structure 52 is a rubber; And when this matrix phase material 50 (matrix phase material) when being polypropylene (polypropylene), this second light reflection structure 52 is preferably wherein one or arbitrary combination of polyethylene (polyethylene), high density polyethylene(HDPE) (high-density polyethylene), new LDPE (film grade) (low-density polyethylene), learn through experiment, under optical source wavelength 550nm, the luminous reflectance factor of this luminous reflectance sheet material can reach 98% or higher.
As aforementioned, the 51 employed mineral fillers of first light reflection structure, optional from barium sulfate (BaSO
4), calcium sulfate (CaSO
4), sal epsom (MgSO
4), the inferior aluminium (AlSO of sulfuric acid
4), magnesium chloride (MgCl
2), titanium dioxide (TiO
2), magnesiumcarbonate (MgCO
3), lime carbonate (CaCO
3), barium carbonate (BaCO
3), zinc oxide (ZnO), magnesium oxide (MgO) and aluminum oxide (Al
2O
3) in any or other combination.Especially barium sulfate (BaSO
4), calcium sulfate (CaSO
4) and titanium dioxide (TiO
2) having stronger obstruct light penetrativity, the lost degree of light source reflectivity height and light source is low, so the mineral filler of the embodiment of the invention is with barium sulfate (BaSO
4), calcium sulfate (CaSO
4) or titanium dioxide (TiO
2) as the preferred forms of first light reflection structure 51.Especially, the manufacture method of present embodiment further uses uniaxial extension or biaxial stretch-formed mode to extend this laminar sheet material 53, difference based on ductility between the unlike material, stretching can cause first light reflection structure 51, second light reflection structure 52 and the matrix phase material 50 that engages around it between produce the slit and promote that light reflects fully, make sheet material 53 reach more than 95% at the luminous reflectance factor (light reflectance) of optical source wavelength 550nm.
In addition; luminous reflectance sheet material manufacture method of the present invention also can be laid layer protective layer (protective layer) (not shown) on these matrix phase material 50 surfaces and be intercepted UV or the interference of other water dust, and this protective layer can be in polyester resin (polyester resin), acid polyethylene resin (polyvinyl acetateresin), polyacrylic resin (polyacrylate resin), polyamide resin (polyamide resin) and other the similar constituent any.
For the manufacture method of direct type backlight module, please refer to shown in Figure 6.The manufacture method of this direct type backlight module comprises following steps:
(a). please refer to step S20, preparation lighting unit 64 (Lighting unit) and light diffusion unit 65 (Diffusing unit);
(b). please refer to step S21, prepare at least a matrix phase material 60, first light reflection structure 61 and second light reflection structure 62, wherein this first light reflection structure 61 is for being scattered in the mineral filler (inorganic filler) in this matrix phase material 60, and this second light reflection structure 62 is made of at least a high molecular polymer that is different from this matrix phase material 60;
(c). please refer to step S22, this first light reflection structure 61 of fusion and second light reflection structure 62 be to this matrix phase material 60, and form laminar sheet material 63; And
(d). please refer to step S23, extend this laminar sheet material 63, and, assemble this laminar sheet material 63, this lighting unit 64 and this light diffusion unit 65 common direct type backlight modules that form as step S24 with uniaxial extension and biaxial stretch-formed at least a mode.Matrix phase material 60, first light reflection structure 61 and second light reflection structure 62 that only present embodiment adopted all is equal to aforementioned lights reflection manufacturing method of plate thereof, so no longer repeat to give unnecessary details in this.
Because the luminous reflectance sheet material or the direct type backlight module of the embodiment of the invention, in the matrix phase material except being mixed with mineral filler, also have other to be different from high-reflectivity second light reflection structure of matrix phase material, even if therefore be subjected to the material behavior restriction, can't add mineral filler to desired amount, luminous reflectance sheet material of the present invention and backlight module still can see through the luminous reflectance efficient that second light reflection structure significantly improves finished product, and the usage quantity of saving the titanium oxide inorganic filler synchronously, reduce the manufacturing cost of luminous reflectance sheet material and backlight module then.Especially, the luminous reflectance sheet material of present embodiment further uses uniaxial extension or this laminar sheet material of biaxial stretch-formed extension in manufacture method, difference based on ductility between the unlike material, stretching can cause to be had the slit generation on every side and promotes that light reflects fully between first light reflection structure, second light reflection structure and its matrix phase material that engages, cause the luminous reflectance factor (light reflectance) of optical source wavelength 550nm to reach more than 95%.
Certainly; the present invention also can have other embodiment; under the situation that does not deviate from spirit of the present invention and essence thereof; the person of ordinary skill in the field works as can make various corresponding changes and improvement according to the present invention, but these corresponding changes and improvement all should belong to the protection domain of claim of the present invention.
Claims (13)
1. luminous reflectance unit, it is characterized in that comprising at least a laminar matrix phase material, first light reflection structure and second light reflection structure, wherein this first light reflection structure is the mineral filler that is scattered in this matrix phase material, this second light reflection structure is made of at least a high molecular polymer that is different from this matrix phase material, and fusion is in this matrix phase material, thereby, this luminous reflectance unit is reached more than 95% at the luminous reflectance factor of optical source wavelength 550nm.
2. luminous reflectance according to claim 1 unit is characterized in that, this matrix phase material be polycarbonate and polypropylene any one.
3. luminous reflectance according to claim 1 unit is characterized in that, this second light reflection structure is selected from least one of rubber, polyethylene, polyethylene and ethylene copolymers and porous resin institute cohort group.
4. luminous reflectance according to claim 1 unit is characterized in that, the moulding of this second light reflection structure is selected from column, spherical and the island is at least a.
5. luminous reflectance according to claim 1 unit, it is characterized in that it is at least a that this inorganic filler is selected from barium sulfate, calcium sulfate, sal epsom, the inferior aluminium of sulfuric acid, magnesium chloride, titanium dioxide, magnesiumcarbonate, lime carbonate, barium carbonate, zinc oxide, magnesium oxide and aluminum oxide institute cohort group.
6. luminous reflectance according to claim 1 unit is characterized in that, this matrix phase material surface further includes layer protective layer at least.
7. luminous reflectance according to claim 6 unit is characterized in that, it is at least a that this protective layer is selected from polyester resin, acid polyethylene resin, polyacrylic resin and poly-acetyl resin institute cohort group.
8. a luminous reflectance sheet material manufacture method is characterized in that, may further comprise the steps:
Prepare at least a matrix phase material, first light reflection structure and second light reflection structure, wherein this first light reflection structure is the inorganic filler that is scattered in this matrix phase material, and this second light reflection structure is made of at least a high molecular polymer that is different from this matrix phase material;
This first light reflection structure of fusion and second light reflection structure be to this matrix phase material, and form laminar sheet material; Extend this laminar sheet material with uniaxial extension and biaxial stretch-formed at least a mode, make this sheet material reach more than 95% at the luminous reflectance factor of optical source wavelength 550nm.
9. luminous reflectance polymer composite wood, it is characterized in that, comprise at least a matrix phase material, first light reflection structure and second light reflection structure, wherein this first light reflection structure is the mineral filler that is scattered in this matrix phase material, this second light reflection structure is made of at least a high molecular polymer that is different from this matrix phase material, and fusion is in this matrix phase material, thereby this luminous reflectance polymer composite wood is reached more than 95% at the luminous reflectance factor of optical source wavelength 550nm.
10. backlight module, consist predominantly of lighting unit, luminous reflectance unit and light diffusion unit, it is characterized in that, this luminous reflectance unit comprises at least a matrix phase material, first light reflection structure and second light reflection structure, this first light reflection structure is the mineral filler that is scattered in this matrix phase material, this second light reflection structure is made of at least a high molecular polymer that is different from this matrix phase material, and fusion is in this matrix phase material.
11. the manufacture method of a direct type backlight module comprises following steps:
Preparation lighting unit and light diffusion unit; It is characterized in that, prepare at least a matrix phase material, first light reflection structure and second light reflection structure, wherein this first light reflection structure is the mineral filler that is scattered in this matrix phase material, and this second light reflection structure is made of at least a high molecular polymer that is different from this matrix phase material; This first light reflection structure of fusion and second light reflection structure to this matrix phase material to form laminar sheet material; And extend this laminar sheet material with uniaxial extension and biaxial stretch-formed at least a mode, and this laminar sheet material of assembling, this lighting unit and this light diffusion unit form direct type backlight module jointly.
12. lamp box module, mainly include lighting unit, luminous reflectance unit and light diffusion unit, it is characterized in that, this luminous reflectance unit comprises at least a matrix phase material, first light reflection structure and second light reflection structure, wherein this first light reflection structure is the mineral filler that is scattered in this matrix phase material, this second light reflection structure is made of at least a high molecular polymer that is different from this matrix phase material, and fusion is in this matrix phase material.
13. digital electronic device with liquid crystal display, be selected from liquid-crystal display, duplicating machine, projection display apparatus, facsimile recorder, office's Multi Role Aircraft, the high-definition liquid crystal TV, the automobile liquid crystal TV, portable computer, desk-top computer, the DMB device, electronic game machine, the electron storage display media, and arbitrary device of mobile communication group that transmission equipment is formed, wherein this liquid crystal display uses a kind of luminous reflectance unit, it is characterized in that, this luminous reflectance unit comprises at least a matrix phase material, first light reflection structure and second light reflection structure, this first light reflection structure is the mineral filler that is scattered in this matrix phase material, this second light reflection structure is made of at least a high molecular polymer that is different from this matrix phase material, and fusion is in this matrix phase material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101680614A CN101205357A (en) | 2006-12-22 | 2006-12-22 | Light reflector element, electron device having the same and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101680614A CN101205357A (en) | 2006-12-22 | 2006-12-22 | Light reflector element, electron device having the same and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN101205357A true CN101205357A (en) | 2008-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101680614A Pending CN101205357A (en) | 2006-12-22 | 2006-12-22 | Light reflector element, electron device having the same and manufacturing method thereof |
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| Country | Link |
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| CN (1) | CN101205357A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221718A (en) * | 2010-04-15 | 2011-10-19 | 奇菱科技股份有限公司 | High-reflectivity optical diaphragm and making method thereof |
| CN102582094A (en) * | 2011-01-14 | 2012-07-18 | 新科光电材料股份有限公司 | Multifunctional polyester film and manufacturing method thereof |
| CN102736145A (en) * | 2012-06-29 | 2012-10-17 | 南京第壹有机光电有限公司 | Brightness enhancement film and preparation method thereof, and device using brightness enhancement film |
| CN103093700A (en) * | 2012-10-18 | 2013-05-08 | 友达光电股份有限公司 | Display device and manufacturing method thereof |
| WO2019100311A1 (en) * | 2017-11-24 | 2019-05-31 | 苏州康邦新材料有限公司 | Light diffusion polycarbonate light tube for light-emitting diode lamp and manufacturing method therefor |
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2006
- 2006-12-22 CN CNA2006101680614A patent/CN101205357A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221718A (en) * | 2010-04-15 | 2011-10-19 | 奇菱科技股份有限公司 | High-reflectivity optical diaphragm and making method thereof |
| CN102582094A (en) * | 2011-01-14 | 2012-07-18 | 新科光电材料股份有限公司 | Multifunctional polyester film and manufacturing method thereof |
| CN102582094B (en) * | 2011-01-14 | 2017-08-22 | 新科光电材料股份有限公司 | Multifunctional polyester film and its manufacture method |
| CN102736145A (en) * | 2012-06-29 | 2012-10-17 | 南京第壹有机光电有限公司 | Brightness enhancement film and preparation method thereof, and device using brightness enhancement film |
| CN103093700A (en) * | 2012-10-18 | 2013-05-08 | 友达光电股份有限公司 | Display device and manufacturing method thereof |
| CN103093700B (en) * | 2012-10-18 | 2015-03-18 | 友达光电股份有限公司 | Display device and manufacturing method thereof |
| WO2019100311A1 (en) * | 2017-11-24 | 2019-05-31 | 苏州康邦新材料有限公司 | Light diffusion polycarbonate light tube for light-emitting diode lamp and manufacturing method therefor |
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