CN1238762C - Method for preparing optical film for stretching visual angle of display screen - Google Patents
Method for preparing optical film for stretching visual angle of display screen Download PDFInfo
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- CN1238762C CN1238762C CN 200410004520 CN200410004520A CN1238762C CN 1238762 C CN1238762 C CN 1238762C CN 200410004520 CN200410004520 CN 200410004520 CN 200410004520 A CN200410004520 A CN 200410004520A CN 1238762 C CN1238762 C CN 1238762C
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Abstract
The present invention relates to a method for preparing optical films for stretching visual angles of display screens, which belongs to the technical field of display. Firstly, columnar stripes are processed on a copper plate by a mechanical method; a layer of liquid optical solidifying resin with uniform thickness is coated on a transparent substrate film; the transparent substrate film with the resin is put on a glass flat plate; the copper plate is put on the transparent substrate film; the transparent resin film has the columnar stripes by a hydraulic method; the transparent resin film with the columnar stripes is irradiated by ultraviolet light for solidify and molding the transparent resin film. An optical film prepared by the method of the present invention stretches the 1/2 visual angle of a display screen to 40 to 46 DEG; a visible angle is stretched to 170 DEH. The optical film is combined with a diffusion screen into a big projection screen; the requirement of the diffusion screen for the visual angle is reduced so that the diffusion screen with high gain and a small visual angle simultaneously has high brightness and a wide visual angle, and also has the display effect of a large screen with high quality. When the optical film is combined with a liquid crystal screen for use, the liquid crystal screen can be viewed by approaching to 180 DEG.
Description
Technical field the present invention relates to a kind of preparation method who is used for the optical thin film at broadening display screen visual angle, belongs to the display technique field.
The present various types of demonstrations of background technology all be unable to do without screen, and along with the fast development of display technique, screen size is increasing, thereby also more and more higher to the requirement of screen viewing angle.The existing LCD screen that is used to show, because the optical characteristics of liquid crystal itself, the visual angle is smaller, has natural visual angle defective.The large screen projection display device as back projection TV, back projection all-in-one, projection combination etc., has simple in structurely, and the characteristics that cost is low develop very fast.But because audient's scope is big, require the large screen projection display device to have the visual angle of broad, make to watch to obtain clear beautiful display effect in different angles.
Summary of the invention the objective of the invention is to propose a kind of preparation method who is used for the optical thin film at broadening display screen visual angle, make film surface have one deck optical microstructures, has very high transmittance, do not reduce the brightness of display screen and the visual angle of energy broadening display screen, make it not only can be used for liquid crystal display, can also be used for large screen projection and show.
The preparation method of the optical thin film that is used for broadening display screen visual angle that the present invention proposes comprises following each step:
(1) on copper coin, process the column striped with mechanical means, this striped be shaped as circular arc and pointed shape space;
(2) apply the uniform liquid light-cured resin of a layer thickness on a transparent basilar memebrane, its thickness is 0.1～0.3mm;
(3) the above-mentioned transparent substrates film that is coated with liquid light-cured resin is placed on the glass plate, copper coin with above-mentioned (1) step places on the transparent substrates film again, the liquid light-cured resin layer of the one side that copper coin has a column striped on the basilar memebrane adopts the method for hydraulic pressure to make above-mentioned transparent resin film have the column striped;
(4) to above-mentioned transparent resin film UV-irradiation, make its solidified forming with column striped.
In the said method, the long D=0.1～0.3mm of the circular arc in the column striped, arc radius R=1.05～1.3D, the height h=0.7～0.95D of wedge angle, the bottom width d=0.4 of wedge angle～0.6D.
In the said method, with UV-irradiation the transparent resin film with column striped is solidified, the illumination of ultraviolet light is 100,000～250,000 luxs, and irradiation time is 6～9 seconds.
In the said method, used transparent substrates film is any in polyphenyl dioctyl phthalate ethene, polycarbonate, polyvinyl chloride, PET film, the plasticon.
The optical thin film that utilizes method of the present invention to make can be with 1/2 visual angle broadening to 40 degree～46 degree of display screen, angle of visibility broadening to 170 degree.Be combined into projective large-screen with the scattering screen, can reduce of the requirement of scattering screen, make the scattering screen of high-gain small angle have high brightness and wide visual angle simultaneously, and have high-quality large screen display effect the visual angle.Be used in combination with LCD screen, LCD screen can be watched near 180 degree.
Description of drawings
Fig. 1 is the sectional view of the film for preparing of the present invention.
Fig. 2 is the sectional view that is processed with the copper coin of column striped.
Fig. 3 is the size synoptic diagram of column striped.
Embodiment
The preparation method of the optical thin film that is used for broadening display screen visual angle that the present invention proposes, the cross section of finally shaped optical thin film as shown in Figure 1.The preparation method is: at first on copper coin, process the column striped with mechanical means, this striped be shaped as circular arc and pointed shape space, as shown in Figure 2; Apply the uniform liquid light-cured resin of a layer thickness on a transparent basilar memebrane, its thickness is 0.1～0.3mm; The transparent substrates film that is coated with liquid light-cured resin is placed on the glass plate, copper coin is placed on the transparent substrates film again, the liquid light-cured resin layer of the one side that copper coin has a column striped on the basilar memebrane adopts the method for hydraulic pressure to make above-mentioned transparent resin film have the column striped; To having the transparent resin film UV-irradiation of column striped, make its solidified forming.
In the said method, the long D=0.1～0.3mm of the circular arc in the column striped, arc radius R=1.05～1.3D, the height h=0.7～0.95D of wedge angle, the bottom width d=0.4 of wedge angle～0.6D, as shown in Figure 3.
In the said method, with UV-irradiation the transparent resin film with column striped is solidified, the illumination of ultraviolet light is 100,000～250,000 luxs, and irradiation time is 6～9 seconds.
In the said method, used transparent substrates film is any in polyphenyl dioctyl phthalate ethene, polycarbonate, polyvinyl chloride, PET film, the plasticon.
Below introduce embodiments of the invention.
Embodiment one
On copper coin, go out as shown in the figure columnar microstructure, D=0.135mm wherein, d=0.065mm, h=0.125mm, R=0.150mm by machined into.Go up the evenly liquid light-cured resin of coating at basilar memebrane (polycarbonate membrane of 0.15mm), forming a layer thickness is the uniform transparent resin film of 0.15mm.
Above-mentioned transparent resin film is placed in the middle of copper coin with columnar microstructure and the glass plate, the liquid light-cured resin layer of the one side that copper coin has an optical microstructures on the polycarbonate membrane adopts the method for hydraulic pressure to make above-mentioned transparent resin film have the surface configuration of column.
Make transparent resin film solidify with UV-irradiation, form the columnar microstructure striped on the surface of polycarbonate membrane, ultraviolet light illumination is 150000 luxs, and irradiation time is 7 seconds, makes resin solidification.
Embodiment two
On copper coin by machined into columnar microstructure as shown in the figure, D=0.215mm wherein, d=0.105mm, h=0.19mm, R=0.23mm.Go up the evenly liquid light-cured resin of coating at basilar memebrane (the PET film of 0.2mm), forming a layer thickness is the uniform transparent resin film of 0.2mm.
Above-mentioned transparent resin film is placed in the middle of copper coin with columnar microstructure and the glass plate, the liquid light-cured resin layer of the one side that copper coin has an optical microstructures on the polycarbonate membrane adopts the method for hydraulic pressure to make above-mentioned transparent resin film have the surface configuration of column.
Make transparent resin film solidify with UV-irradiation, form the columnar microstructure striped on the surface of polycarbonate membrane, ultraviolet light illumination is 240000 luxs, and irradiation time is 6 seconds, makes resin solidification.
Embodiment three
On copper coin by machined into columnar microstructure as shown in the figure, D=0.265mm wherein, d=0.145mm, h=0.25mm, R=0.285mm.Go up the evenly liquid light-cured resin of coating at basilar memebrane (plasticon of 0.3mm), forming a layer thickness is the uniform transparent resin film of 0.25mm.
Above-mentioned transparent resin film is placed in the middle of copper coin with columnar microstructure and the glass plate, the liquid light-cured resin layer of the one side that copper coin has an optical microstructures on the polycarbonate membrane adopts the method for hydraulic pressure to make above-mentioned transparent resin film have the surface configuration of column.
Make transparent resin film solidify with UV-irradiation, form the columnar microstructure striped on the surface of polycarbonate membrane, ultraviolet light illumination is 180000 luxs, and irradiation time is 8 seconds, makes resin solidification.
Embodiment four
On copper coin, go out columnar microstructure as shown in the figure, D=0.105mm wherein, d=0.055mm, h=0.1mm, R=0.14mm by machined into.Go up the evenly liquid light-cured resin of coating at basilar memebrane (the polyphenyl dioctyl phthalate ethene of 0.2mm), forming a layer thickness is the uniform transparent resin film of 0.1mm.
Above-mentioned transparent resin film is placed in the middle of copper coin with columnar microstructure and the glass plate, the liquid light-cured resin layer of the one side that copper coin has an optical microstructures on the polycarbonate membrane adopts the method for hydraulic pressure to make above-mentioned transparent resin film have the surface configuration of column.
Make transparent resin film solidify with UV-irradiation, form the columnar microstructure striped on the surface of polycarbonate membrane, ultraviolet light illumination is 200000 luxs, and irradiation time is 7 seconds, makes resin solidification.
Embodiment five
On copper coin, go out as shown in the figure columnar microstructure, D=0.175mm wherein, d=0.095mm, h=0.155mm, R=0.19mm by machined into.Go up the evenly liquid light-cured resin of coating at basilar memebrane (polyvinyl chloride of 0.25mm), forming a layer thickness is the uniform transparent resin film of 0.3mm.
Above-mentioned transparent resin film is placed in the middle of copper coin with columnar microstructure and the glass plate, the liquid light-cured resin layer of the one side that copper coin has an optical microstructures on the polycarbonate membrane adopts the method for hydraulic pressure to make above-mentioned transparent resin film have the surface configuration of column.
Make transparent resin film solidify with UV-irradiation, form the columnar microstructure striped on the surface of polycarbonate membrane, ultraviolet light illumination is 150000 luxs, and irradiation time is 9 seconds, makes resin solidification.
Claims (3)
1, a kind of preparation method who is used for the optical thin film at broadening display screen visual angle is characterized in that this method comprises following each step:
(1) on copper coin, processes the column striped with mechanical means, this striped be shaped as circular arc and pointed shape space, the long D=0.1～0.3mm of the circular arc in the column striped, arc radius R=1.05～1.3D, height h=0.7～the 0.95D of wedge angle, the bottom width d=0.4 of wedge angle～0.6D;
(2) apply the uniform liquid light-cured resin layer of a layer thickness on a transparent basilar memebrane, its thickness is 0.1～0.3mm;
(3) the above-mentioned transparent substrates film that is coated with liquid light-cured resin layer is placed on the glass plate, copper coin with above-mentioned (1) step places on the transparent substrates film again, the liquid light-cured resin layer of the one side that copper coin has a column striped on the basilar memebrane adopts the method for hydraulic pressure to make above-mentioned liquid light-cured resin layer have the column striped;
(4) to above-mentioned liquid light-cured resin layer UV-irradiation, make its solidified forming with column striped.
2, preparation method as claimed in claim 1 is characterized in that with UV-irradiation the liquid light-cured resin layer with column striped being solidified, and the illumination of ultraviolet light is 100,000～250,000 luxs, and irradiation time is 6～9 seconds.
3, preparation method as claimed in claim 1 is characterized in that described transparent substrates film is any in polyphenyl dioctyl phthalate ethene, polycarbonate, polyvinyl chloride, pet film, the plasticon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410004520 CN1238762C (en) | 2004-02-20 | 2004-02-20 | Method for preparing optical film for stretching visual angle of display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410004520 CN1238762C (en) | 2004-02-20 | 2004-02-20 | Method for preparing optical film for stretching visual angle of display screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1560700A CN1560700A (en) | 2005-01-05 |
| CN1238762C true CN1238762C (en) | 2006-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200410004520 Expired - Fee Related CN1238762C (en) | 2004-02-20 | 2004-02-20 | Method for preparing optical film for stretching visual angle of display screen |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2022621A1 (en) * | 2006-05-09 | 2009-02-11 | Nitto Denko Corporation | Method for manufacturing combination-type optical film, apparatus for the method, combination-type optical film, and image display device |
| CN102565885A (en) * | 2011-12-13 | 2012-07-11 | 番禺南沙殷田化工有限公司 | Hardened optical thin film and preparation method thereof |
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2004
- 2004-02-20 CN CN 200410004520 patent/CN1238762C/en not_active Expired - Fee Related
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| CN1560700A (en) | 2005-01-05 |
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