CN111239873A - High-light-shading-property composite board and preparation method thereof - Google Patents
High-light-shading-property composite board and preparation method thereof Download PDFInfo
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- CN111239873A CN111239873A CN201811433570.4A CN201811433570A CN111239873A CN 111239873 A CN111239873 A CN 111239873A CN 201811433570 A CN201811433570 A CN 201811433570A CN 111239873 A CN111239873 A CN 111239873A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/0808—Mirrors having a single reflecting layer
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/12—Reflex reflectors
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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
- G02B6/005—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
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Abstract
The invention belongs to the technical field of photoelectricity, and relates to a high-light-shading-property composite board and a preparation method thereof. The invention provides a high-light-shading-performance composite reflecting plate and a preparation method thereof, aiming at solving the problems of heavy weight, large thickness and poor light shading performance of a backlight module. The composite board comprises a reflecting layer, a supporting layer and a shading layer, the three-layer structure can be the reflecting layer/the supporting layer/the shading layer or the reflecting layer/the shading layer/the supporting layer, and the shading layer is formed by adopting a coating method to improve the shading performance of the composite board. The composite reflecting plate provided by the invention can replace a metal back plate, a reflecting film of a backlight module of a display and a metal back plate, foam and a reflecting film of a panel lamp, and solves the great problem that the composite plate has poor light shading performance in the display or the panel lamp.
Description
Technical Field
The invention belongs to the technical field of photoelectricity, and relates to a high-light-shading-property composite reflecting plate and a preparation method thereof.
Background
The backlight module is an important component of a Flat Panel Display (Flat Panel Display), and is mainly classified into a direct type and a side type, and the main difference between the direct type and the side type is the incident mode of a light source. The light source of the side-in type backlight module is arranged on the side face, the running direction of light emitted by the LED is changed when the light passes through the light guide plate, part of the light is directly emitted from the light guide plate, and part of the light is emitted to the reflecting film. The side-in backlight module comprises a back plate, a reflecting film, a light guide plate, a diffusion film, a brightness enhancement film and LED lamp beads, wherein the two layers at the bottom are the back plate and the reflecting film. Generally, the thickness of the metal back plate is 600 to 800 μm, the thickness of the reflective film is 50 to 500 μm, and the total thickness of the metal back plate and the reflective film is 650 to 1300 μm. And the metal back plate has large weight, so that the weight of the terminal product is greatly increased. The composite board is formed by combining a reflecting layer, a supporting layer and a shading layer, wherein the shading layer generally adopts the technologies of metal sputtering, metal film bonding and the like, and the technology has complex process and unstable shading property.
Disclosure of Invention
The invention provides a high-light-shading-performance composite board and a preparation method thereof, aiming at solving the problem of poor light shading performance of the composite board.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention provides a high-shading-performance composite reflecting plate, which is characterized in that: the composite reflection plate sequentially comprises a reflection layer, a supporting layer and a shading layer.
Further, the three layers of the composite reflection plate can be a reflection layer/a support layer/a light shielding layer or a support layer/a reflection layer/a light shielding layer.
Further, the light shielding rate of the composite reflection plate is more than 95%.
Further, the reflective layer is one of a reflective base layer or a reflective coating layer containing particles.
Further, the support layer is made of one of a stiff plastic film or glass.
Furthermore, the light shielding layer is formed by coating the light shielding layer resin and a curing agent to form a coating liquid, and then coating the coating liquid on the composite board, and performing crosslinking and thermosetting.
Further, the light shielding layer resin is one or more of a metal ink resin, an organic dye and resin combination and the like.
Further, the curing agent is one or a combination of at least two of polyurethane, cyanoacrylate and isocyanate.
Further, the light shielding layer resin of the light shielding layer may be selected from a single metal ink resin to shield light.
Furthermore, the mass ratio of the metal ink resin to the curing agent of the light shielding layer is 1: 0.1-1.
Furthermore, the mass ratio of the metal ink resin to the curing agent of the light shielding layer is preferably 1: 0.6-0.9.
Further, the optimal mass ratio of the metal ink resin to the curing agent of the light shielding layer is 1: 0.6-0.8.
Further, the shading layer selects two of metal ink resin and organic dye to be mixed for shading.
Furthermore, the mass ratio of the metal ink resin to the organic dye in the shading layer is 1: 0.2-1.6.
Further, the mass ratio of the metal ink resin to the organic dye in the light shielding layer is preferably 1: 0.6-1.4.
Further, the mass ratio of the metal ink resin to the organic dye in the light shielding layer is most preferably 1: 0.8-1.2.
Furthermore, the mass ratio of the metal ink resin to the curing agent in the light shielding layer is 1: 0.6-2.
Further, the mass ratio of the metal ink resin to the curing agent in the light shielding layer is preferably 1: 1-1.8.
Further, the mass ratio of the metal ink resin to the curing agent in the light shielding layer is most preferably 1: 1.2-1.6.
Furthermore, the mass ratio of the organic dye to the curing agent in the shading layer is 1: 1.25-3.
Further, the mass ratio of the organic dye to the curing agent in the shading layer is preferably 1: 1.29-1.67.
Further, the mass ratio of the organic dye to the curing agent in the shading layer is most preferably 1: 1.33-1.5.
Further, the thickness of the light shielding layer is between 1 and 15 microns.
Further, the thickness of the light shielding layer is preferably 6-14 μm.
Further, the thickness of the light shielding layer is most preferably between 8 and 14 μm.
The invention provides a preparation method of a high-light-shading-property composite board, which is characterized by comprising the following steps:
(1) a composite panel is provided that is comprised of a reflective layer and a support layer structure.
(2) And dissolving the light shielding layer resin and a curing agent in an organic solvent to form a coating liquid, coating the coating liquid on the composite board, and crosslinking and thermally curing to form the light shielding layer.
(3) Wherein the temperature of the thermal curing in the steps (1) to (2) is 80 to 120 ℃, and the reaction time is 1 to 4 minutes.
Furthermore, the shading rate of the composite board is more than 97 percent, namely the coating thickness is preferably 6-14 mu m, the heat curing temperature of the shading layer coating is preferably 90-120 ℃, and the reaction time is 3-4 minutes.
Furthermore, the shading rate of the composite board is more than 98%, namely the coating thickness is preferably 8-14 μm, the temperature for heat curing of the shading layer coating is preferably 100-120 ℃, and the reaction time is 3 minutes.
Compared with the prior art, the composite board provided by the invention has the characteristics of light weight, small thickness, good stiffness, good shielding property, high brightness and easiness in assembly, replaces a metal back plate and a reflecting film in a backlight module of a display or a metal back plate, foam and a reflecting film in a panel lamp, and solves the problems of light leakage and the like in the composite board.
Drawings
Fig. 1 is a schematic structural diagram of a composite plate provided by the present invention.
Wherein A is a light shielding layer, B is a supporting layer, and C is a reflecting layer.
Detailed Description
The invention will be better understood from the following examples. However, those skilled in the art will readily appreciate that the description of the embodiments is only for illustrating the present invention and should not be taken as limiting the invention as detailed in the claims.
As shown in fig. 1, the composite board with high light-shielding property of the present invention comprises a reflective layer, a supporting layer and a light-shielding layer from bottom to top.
The performance evaluation of the coating process is carried out on the high-shading-property composite board prepared by the invention:
LFY-250 coating fabric shading performance tester
Thickness tester-film Analyzer model F20, manufactured by FILMETRICS Inc. of USA
Example 1
The invention provides a composite reflecting plate which is structurally characterized in that a reflecting layer and a supporting layer are adopted, 10 parts of single light shading layer resin and 1 part of isocyanate curing agent are dissolved in a mixed solution of ethyl acetate and butyl acetate and are uniformly mixed to form a coating liquid. And (3) coating the composite board on a substrate layer of the composite board in a coating mode, drying the composite board in a drying oven at 100 ℃ for 3min, and cooling the composite board to room temperature to obtain the lightproof composite board.
Example 2
A composite reflection sheet as provided in example 1, except that the isocyanate-based curing agent was added in an amount of 3 parts by mass, was obtained as a light-shielding composite sheet.
Example 3
A composite reflection sheet as provided in example 1, except that the isocyanate-based curing agent was used in an amount of 5 parts by mass, was obtained as a light-shielding composite sheet.
Example 4
A composite reflection sheet as provided in example 1, except that the isocyanate-based curing agent was used in an amount of 6 parts by mass, was obtained as a light-shielding composite sheet.
Example 5
A composite reflection sheet as provided in example 1, except that the isocyanate-based curing agent was used in an amount of 8 parts by mass, was obtained as a light-shielding composite sheet.
Example 6
A composite reflection sheet as provided in example 1, except that the isocyanate-based curing agent was added in an amount of 9 parts by mass, was obtained as a light-shielding composite sheet.
Example 7
A composite reflection sheet as provided in example 1, except that the isocyanate-based curing agent was used in an amount of 10 parts by mass, was obtained as a light-shielding composite sheet.
Example 8
The invention provides a composite reflecting plate which is structurally characterized in that a reflecting layer and a supporting layer are adopted, 10 parts of single light shading layer resin and 6 parts of isocyanate curing agent are dissolved in a mixed solution of ethyl acetate and butyl acetate and are uniformly mixed to form a coating liquid. And (3) coating the composite board on a substrate layer of the composite board in a coating mode, drying the composite board in a drying oven at 100 ℃ for 1min, and cooling the composite board to room temperature to obtain the lightproof composite board.
Example 9
The composite reflection plate and the raw materials as provided in example 8 were used except that the composite reflection plate was dried in a drying oven at 100 ℃ for 2min and cooled to room temperature to obtain a light-shielding composite plate.
Example 10
The composite reflection plate and the raw materials as provided in example 8 were used except that the composite reflection plate was dried in a drying oven at 100 ℃ for 4min and cooled to room temperature to obtain a light-shielding composite plate.
Example 11
The composite reflection plate and the raw materials as provided in example 8 were used except that the composite reflection plate was dried in a drying oven at 80 ℃ for 3min and cooled to room temperature to obtain a light-shielding composite plate.
Example 12
The composite reflection plate and the raw materials as provided in example 8 were used except that the composite reflection plate was dried in a drying oven at 90 ℃ for 3min and cooled to room temperature to obtain a light-shielding composite plate.
Example 13
The composite reflection plate and the raw materials as provided in example 8 were used except that the composite reflection plate was dried in a drying oven at 110 ℃ for 3min and cooled to room temperature to obtain a light-shielding composite plate.
Example 14
The composite reflection plate and the raw materials as provided in example 8 were used except that the composite reflection plate was dried in a drying oven at 120 ℃ for 3min and cooled to room temperature to obtain a light-shielding composite plate.
Example 15
The invention provides a composite reflecting plate which is structurally characterized by comprising a reflecting layer and a supporting layer, wherein 5 parts of metal ink shading layer resin, 1 part of organic dye shading resin and 3 parts of isocyanate curing agent are dissolved in a mixed solution of ethyl acetate and butyl acetate and are uniformly mixed to form a coating liquid. And (3) coating the composite board on a substrate layer of the composite board in a coating mode, drying the composite board in a drying oven at 100 ℃ for 3min, and cooling the composite board to room temperature to obtain the lightproof composite board.
Example 16
The composite reflection plate and the process parameters as those provided in example 15 were changed to 2 parts of an organic dye light-shielding resin and 4 parts of an isocyanate curing agent, so that a light-shielding composite plate was obtained.
Example 17
The composite reflection plate and the process parameters as provided in example 15 were changed to 3 parts of an organic dye light-shielding resin and 5 parts of an isocyanate curing agent, so that a light-shielding composite plate was obtained.
Example 18
The composite reflection plate and the process parameters as provided in example 15 were changed to 4 parts of an organic dye light-shielding resin and 6 parts of an isocyanate curing agent, so that a light-shielding composite plate was obtained.
Example 19
The composite reflection plate and the process parameters as provided in example 15 were changed to 5 parts of an organic dye light-shielding resin and 7 parts of an isocyanate curing agent, so that a light-shielding composite plate was obtained.
Example 20
The composite reflection plate and the process parameters as provided in example 15 were changed to 6 parts of organic dye light-shielding resin and 8 parts of isocyanate curing agent, so that a light-shielding composite plate was obtained.
Example 21
The composite reflection plate and the process parameters as those provided in example 15 were changed to 7 parts of an organic dye light-shielding resin and 9 parts of an isocyanate curing agent, so that a light-shielding composite plate was obtained.
Example 22
The composite reflection plate and the process parameters as those provided in example 15 were changed to 9 parts of an organic dye light-shielding resin and 10 parts of an isocyanate curing agent, so that a light-shielding composite plate was obtained.
Comparative example 1
The composite reflective plate provided in example 1 was formed by sputtering a metallic aluminum coating on the substrate of the supporting layer by metal sputtering, and then cooled to room temperature to obtain a light-shielding coating.
Comparative example 2
In the composite reflection plate provided in example 1, a 15 μm aluminum-plated film was bonded to the base material of the support layer by bonding, thereby obtaining a light-shielding coating layer.
Table 1 comparison of light-blocking Properties of composite Panel
As can be seen from the test results of the examples and comparative examples shown in table 1, the light-shielding rates of the high light-shielding composite plates provided by the present invention all reach more than 95%, and these light-shielding rates are greater than those of the composite plates prepared by the metal sputtering process and the metal film laminating process.
As can be seen from the test results of the examples and comparative examples shown in Table 1, examples 4-6, 10, 12-14, 17-21 are preferred examples, and all of the light-shielding rates are 97% or more, i.e., the coating thickness is preferably 6-14 μm, and the heat curing temperature for the light-shielding layer coating is preferably 90-120 ℃ and the reaction time is 3-4 minutes.
Among them, examples 4 to 6 show that the mass ratio of the metal ink resin to the curing agent of the light shielding layer is preferably 1:0.6 to 0.9.
Among them, examples 17 to 21 show that the mass ratio of the metal ink resin to the organic dye in the light shielding layer is preferably 1:0.6 to 1.4; the mass ratio of the metal ink resin to the curing agent in the light shielding layer is preferably 1: 1-1.8; the mass ratio of the organic dye to the curing agent in the shading layer is preferably 1: 1.29-1.67.
As can be seen from the test results of the examples and comparative examples shown in Table 1, examples 4-5, 14, 18-20 are the most preferable examples, and the light-shielding rate is 98% or more, i.e., the coating thickness is preferably 8-14 μm, and the heat curing temperature for the light-shielding layer coating is preferably 100-120 ℃ and the reaction time is 3 minutes.
Among them, examples 4 to 5 show that the mass ratio of the metal ink resin to the curing agent of the light shielding layer is preferably 1:0.6 to 0.8.
Among them, examples 18 to 20 show that the mass ratio of the metal ink resin to the organic dye in the light-shielding layer is most preferably 1:0.8 to 1.2; the mass ratio of the metal ink resin to the curing agent in the light shielding layer is most preferably 1: 1.2-1.6; the mass ratio of the organic dye to the curing agent in the shading layer is most preferably 1: 1.33-1.5.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. All equivalent changes and modifications made according to the disclosure of the present invention are covered by the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a compound reflecting plate of high shading nature which characterized in that: the composite reflection plate sequentially comprises a reflection layer, a supporting layer and a shading layer, and the shading rate of the composite reflection plate is more than 95%.
2. The composite reflection plate according to claim 1, wherein: the three layers of the composite reflecting plate can be a reflecting layer/a supporting layer/a shading layer or a supporting layer/a reflecting layer/a shading layer.
3. The composite reflection plate according to claim 1, wherein: the light shielding layer is formed by coating the light shielding layer resin and a curing agent on the composite board and performing crosslinking and thermosetting.
4. The composite reflection plate according to claim 3, wherein: the light shielding layer resin is one or more of metal ink resin, organic dye and resin combination and the like.
5. The composite reflection plate according to claim 3, wherein: the curing agent is one or the combination of at least two of polyurethane, cyanoacrylate and isocyanate.
6. The composite reflection plate according to claim 3, wherein: the shading layer resin of the shading layer can be selected from a single metal ink resin for shading, and the mass ratio of the metal ink resin to the curing agent of the shading layer is 1: 0.1-1.
7. The composite reflection plate according to claim 3, wherein: the shading layer is formed by mixing and shading two kinds of metal ink resin and organic dye, and the mass ratio of the metal ink resin to the organic dye in the shading layer is 1: 0.2-1.6; the mass ratio of the metal ink resin to the curing agent in the light shielding layer is 1: 0.6-2; the mass ratio of the organic dye to the curing agent in the shading layer is 1: 1.25-3.
8. The composite reflection plate according to claim 3, wherein: the thickness of the light shielding layer is between 1 and 15 mu m.
9. A preparation method of a high-light-shading composite reflecting plate is characterized by comprising the following steps:
(1) a composite panel is provided that is comprised of a reflective layer and a support layer structure.
(2) And dissolving the light shielding layer resin and a curing agent in an organic solvent to form a coating liquid, coating the coating liquid on the composite board, and crosslinking and thermally curing to form the light shielding layer.
(3) Wherein the temperature of the thermal curing in the steps (1) to (2) is 80 to 120 ℃, and the reaction time is 1 to 4 minutes.
10. A method for producing a composite reflection plate according to claim 9, characterized in that: the shading rate of the composite board is more than 97 percent, namely the coating thickness is preferably 6-14 mu m, the heat curing temperature of the shading layer coating is preferably 90-120 ℃, and the reaction time is 3-4 minutes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811433570.4A CN111239873A (en) | 2018-11-29 | 2018-11-29 | High-light-shading-property composite board and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811433570.4A CN111239873A (en) | 2018-11-29 | 2018-11-29 | High-light-shading-property composite board and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114093274A (en) * | 2021-12-09 | 2022-02-25 | 武汉华星光电半导体显示技术有限公司 | Display device and display terminal |
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| CN107111184A (en) * | 2014-12-23 | 2017-08-29 | 3M创新有限公司 | Reflector layer is fit |
| JP2017188984A (en) * | 2016-04-01 | 2017-10-12 | ニッタ株式会社 | Light shielding wall for photovoltaic power generation panel |
| CN108753226A (en) * | 2018-05-31 | 2018-11-06 | 深圳科诺桥科技股份有限公司 | A kind of photomask and FPC |
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| CN102355991A (en) * | 2009-03-17 | 2012-02-15 | 积水化学工业株式会社 | Tape base material for assembling display device, and adhesive sheet for assembling display device and display module unit using same |
| JP2010222523A (en) * | 2009-03-25 | 2010-10-07 | Dic Corp | Light-shielding reflective tape and lcd (liquid crystal display) module |
| CN103635493A (en) * | 2011-10-21 | 2014-03-12 | 日本化药株式会社 | Method for producing optical member and use of ultraviolet ray cured resin composition for same |
| CN107111184A (en) * | 2014-12-23 | 2017-08-29 | 3M创新有限公司 | Reflector layer is fit |
| JP2017188984A (en) * | 2016-04-01 | 2017-10-12 | ニッタ株式会社 | Light shielding wall for photovoltaic power generation panel |
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| CN114093274A (en) * | 2021-12-09 | 2022-02-25 | 武汉华星光电半导体显示技术有限公司 | Display device and display terminal |
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Application publication date: 20200605 |