CN2693456Y - Base material structure capable of eliminating warping - Google Patents
Base material structure capable of eliminating warping Download PDFInfo
- Publication number
- CN2693456Y CN2693456Y CN 200420003838 CN200420003838U CN2693456Y CN 2693456 Y CN2693456 Y CN 2693456Y CN 200420003838 CN200420003838 CN 200420003838 CN 200420003838 U CN200420003838 U CN 200420003838U CN 2693456 Y CN2693456 Y CN 2693456Y
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- base material
- separation layer
- warpage
- main body
- utility
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Abstract
The utility model provides a base material structure capable of eliminating warping, mainly containing a base material body of which the surface is provided with an isolating layer which is made of cyclic olefins polymer (COP). Because the COP material has low water absorption, the base material structure can not generate the warping phenomenon after the single face of the base material is irradiated by a heat source.
Description
Technical field
The utility model is relevant with optical element, and is fixed especially about a kind of matrix structure of avoiding warpage.
Background technology
Fig. 1 is that the branch that shows a kind of down straight aphototropism mode set (direct-light backlight unit) 60 is rescued, this down straight aphototropism mode set 60 includes a drain pan 62, is sequentially provided with a reflecting piece (reflector) 64, a plurality of fluorescent tube (lamps) 66, a diffuser plate (diffuser) 68 and a upper ledge 70 on it.
General diffuser plate be mostly with polymethyl methacrylate (Polymethyl methacrylate, PMMA) or polycarbonate (Polycarbonate, PC) made.These two kinds of materials all have higher water imbibition (water absorption).The water imbibition of PMMA is tested with testing standard ASTM D570, is 0.3%, and the water imbibition of PC, identical testing standard is 0.2%.
See also Fig. 2 to shown in Figure 4, this diffuser plate 68 has one first side 681, and it is the side in the face of these fluorescent tubes 66, and one second side 682, and it is the opposition side of this first side 681.In Fig. 2, the moisture that on behalf of this diffuser plate 68, we absorbed with point.See also shown in Figure 3ly, when these lamp tube startings, this first side 681 is because of being subjected to the direct irradiation of these fluorescent tubes 66, causes wherein contained moisture to be evaporated and looses and overflow.At this moment, this diffuser plate 68 is can be less than the water content near the part of second side 682 near the water content of the part of first side 681.In other words, this diffuser plate 68 is becoming different near the material behavior of the part of first side 681 and material behavior near the part of second side 682.Add this first side 681 because of being subjected to the direct irradiation of these fluorescent tubes 66, its surface temperature can be greater than second side 682, and the deflection that causes this first side 681 and second side 682 to be produced is also inequality, and makes this diffuser plate 68 produce warpages, as shown in Figure 4.
The direct method of wanting head it off is for adopting the material of other low water absorbables, but that this type of material is not a price is too expensive, is exactly that material behavior can't meet demand.
Another kind of solution is respectively to be provided with one in the both sides of this diffuser plate 68 to have the film (not shown) of low water absorbable, and mostly this film is with silica (SiO
2) constitute.The problem of this kind mode be that silicon oxide film is plated in this or fall apart on operating temperature need be higher than 220 ℃, and must in vacuum drying oven, carry out.Such processing mode is difficulty comparatively, and expensive, and in addition, under high temperature action, PMMA or the material behavior of PC are easy to understand influenced and change.
The utility model content
Main purpose of the present utility model is, a kind of matrix structure of avoiding warpage is provided, and it can avoid this base material to be subjected to Temperature Influence and to produce warpage.
Another purpose of the present utility model is, a kind of matrix structure of avoiding warpage is provided, and its processing cost is comparatively cheap.
For reaching aforesaid creation purpose, a kind of matrix structure of avoiding warpage provided by the utility model is characterized in that, includes a material main body, has one first side and one second side; On this first side and second side, a separation layer is set respectively, and this two separation layer is made with cyclenes cigarette polymer.
Wherein this separation layer is made with cyclenes cigarette co-polymer.
Wherein the thickness of this separation layer is greater than 1 μ m.
Wherein the thickness of this separation layer is between 50 μ m to 200 μ m.
Wherein this material main body has a plurality of distolaterally, and these distolateral last one are provided with this isolation layer.
Wherein this material main body can be polymethyl methacrylate or Merlon is made.
Description of drawings
For further specifying technology contents of the present utility model, below in conjunction with embodiment and accompanying drawing describes in detail as after, wherein:
Fig. 1 is the exploded view of existing down straight aphototropism mode set;
Fig. 2 is the diffuser plate of this down straight aphototropism mode set and the schematic diagram of fluorescent tube, shows that contained moisture and fluorescent tube do not lighted in the diffuser plate;
Fig. 3 is the schematic diagram of continuity Fig. 2, shows that lamp tube starting causes part water evaporates contained in the diffuser plate;
Fig. 4 is the schematic diagram of continuity Fig. 3, shows that the difference of diffuser plate rain face Yin Wendu and water content are different and produces warpage;
Fig. 5 is the decomposition for first preferred embodiment of the present utility model;
Fig. 6 is the cutaway view for first preferred embodiment of the present utility model, shows that separation layer blocks the schematic diagram that moisture is evaporated; And
Fig. 7 is the cutaway view for second preferred embodiment of the present utility model.
The specific embodiment
See also shown in Figure 5, a kind of matrix structure 1 of avoiding warpage that first preferred embodiment of the present utility model is provided, consist predominantly of a material main body 10, have one first side 12 and one second side 14, and two separation layers 20 are arranged at respectively on first side 12 and second side 14 of this material main body 10.
This material main body 10 be with polymethyl methacrylate (Polymethyl methacrylate, PMMA) or polycarbonate (Polycarbonate, PC) made.Polymethyl methacrylate (being designated hereinafter simply as PMMA) is commonly called as in Taiwan and is acryl, and is called lucite in the China's Mainland.Therefore PMMA is subjected to extensive use because of having advantages such as good optical characteristics and low price.Merlon (hereinafter to be referred as PC) has high tenacity and the high grade of transparency is its greatest feature.These two kinds of materials have been widely used at present photovoltaic such as the LGP of CD sheet, optical fiber and module backlight or diffuser plate except being applied to traditional automobile and building industry.
This two separation layer 20 be with cyclic olefin polymer (Cyclic Olefins Polymer, COP) made.Particularly, this two separation layer 20 is can the cycloolefin co-polymer (Cyclic OlefinsCopolymer, COC) made.
This cycloolefin co-polymer (hereinafter to be referred as COC) is via under golden alkene (Metallocenc) catalyst and the catalysis of MAO accelerator, (combined polymerizations such as (ethylene) forms the monomer of α-Olefins) as ethene as (Norbornene, be called for short NB) and linear alpha-olefin with cyclic olefin (Cyclic olefins) monomer.COC is a kind of thermoplastic plastic, possesses following properties: advantages such as high transparent, low water absorbable, low-shrinkage, low birefringence, high-fire resistance, dimensional stability, low-k, chemical resistance.The water imbibition of COC is tested with testing standard ASTMD 570, is＜0.01%, much smaller than the water imbibition (0.3%) of PMMA and the water imbibition (0.2%) of PC.
The method that this two separation layer 20 is arranged at this material main body 10 has: be total to extrusion method (co-extrusion), rubbing method (coating) and vapour deposition method (evaporation) etc.And rubbing method can be immersion coating (dip coating), slit coating (slit coating) or rotation coating (spin coating).In addition, vapour deposition method can be the chemical vapor deposition method (chemical vapordeposition, CVD) or physical vapor deposition (physical-vapor deposition, PVD).
The thickness of this two separation layer 20 is greater than reaching function of the present utility model more than the 1 μ m, and preferably the thickness of this separation layer 20 is between 50 μ m-200 μ m.
See also shown in Figure 6, when the single side of base material 1 of the present utility model (among the figure shown be this first side 12) is subjected to the irradiation of fluorescent tube 25 (or other thermals source) because the water imbibition of this separation layer 20 is extremely low, therefore, the problem that does not almost have moisture to be evaporated.And the contained moisture (representing to put among the figure) of this material main body 10 also can't pass this separation layer 20, and this base material 1 is being consistent near the material behavior of the part of this first side 12 and material behavior near the part of this second side 14.Thus, even under the higher situation of the single face temperature of this base material 1, this base material 1 still can not produce the phenomenon of warpage.
See also shown in Figure 7, the matrix structure 2 of the warpage avoided that the utility model second preferred embodiment is provided, include a material main body 30, it has one first side 32, one second side 34 and four distolateral 36 (only show among the figure this material main body 30 about two distolateral 36).Be provided with isolation layer 40 respectively in this first side 32, second side 34 and four ends, 36 sides.
The matrix structure of warpage of avoiding provided by the utility model can be applicable to the diffuser plate of down straight aphototropism mode set, LGP, windows be protected plate, optical mirror slip or the general building materials of side entrance back module.
Claims (6)
1. the matrix structure that can avoid warpage is characterized in that, includes a material main body, has one first side and one second side; On this first side and second side, a separation layer is set respectively, and this two separation layer is made with cyclic olefin polymer.
2. according to the described matrix structure of avoiding warpage of claim 1, it is characterized in that wherein this separation layer is made with the cycloolefin co-polymer.
3. according to the described matrix structure of avoiding warpage of claim 1, it is characterized in that wherein the thickness of this separation layer is greater than 1 μ m.
4. according to the described matrix structure of exempting from warpage of meeting of claim 1, it is characterized in that wherein the thickness of this separation layer is between 50 μ m to 200 μ m.
5. according to claim 1 or the 2 described matrix structures of avoiding warpage, it is characterized in that wherein this material main body has a plurality of distolaterally, and these distolateral last one are provided with this isolation layer.
6. according to claim 1 or the 2 described matrix structures of avoiding warpage, it is characterized in that wherein this material main body can be polymethyl methacrylate or Merlon is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420003838 CN2693456Y (en) | 2004-02-24 | 2004-02-24 | Base material structure capable of eliminating warping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420003838 CN2693456Y (en) | 2004-02-24 | 2004-02-24 | Base material structure capable of eliminating warping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2693456Y true CN2693456Y (en) | 2005-04-20 |
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ID=34767320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420003838 Expired - Fee Related CN2693456Y (en) | 2004-02-24 | 2004-02-24 | Base material structure capable of eliminating warping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2693456Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106700235A (en) * | 2015-11-15 | 2017-05-24 | 合肥杰事杰新材料股份有限公司 | High-transparency and flame-retardant PP (polypropylene)/COC (cycloolefin copolymer) composite and preparation method thereof |
-
2004
- 2004-02-24 CN CN 200420003838 patent/CN2693456Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106700235A (en) * | 2015-11-15 | 2017-05-24 | 合肥杰事杰新材料股份有限公司 | High-transparency and flame-retardant PP (polypropylene)/COC (cycloolefin copolymer) composite and preparation method thereof |
| CN106700235B (en) * | 2015-11-15 | 2020-08-28 | 合肥杰事杰新材料股份有限公司 | Preparation and method of high-transparency flame-retardant polypropylene/COC composite material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050420 Termination date: 20110224 |