CN109705728B - Anti-ultraviolet film for QD-LCD surface and preparation method thereof - Google Patents
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Abstract
The invention relates to the technical field of ultraviolet resistance, and discloses an ultraviolet resistant film for a QD-LCD surface and a preparation method thereof. The method comprises the following steps: putting 9-11 parts of propyl trimethoxy silane, 9-11 parts of methyl trimethoxy silane and 18-22 parts of tetraethyl silicate into a flask, and stirring to obtain a solution-gel A; step two: stirring 9-11 parts of solution-gel A, 36-44 parts of ethanol, 36-44 parts of distilled water and 2.7-3.3 parts of hydrochloric acid at room temperature to obtain solution-gel B; step three: dissolving 12-16 parts of 2- [ 2-hydroxy-5-tert-octylphenyl) benzotriazole in 77-95 parts of methyl ethyl ketone to obtain a solution A; step four: stirring 3.6-4.4 parts of the solution A and 87-105 parts of the solution-gel B, and coating the obtained sol-gel on the surface of the QD-LCD to prepare the ultraviolet-resistant film. The ultraviolet resistant film of the present invention, prepared by the above process, is coated on the surface of the QD-LCD, and can filter the remaining ultraviolet.
Description
Technical Field
The invention relates to the technical field of ultraviolet resistance, in particular to an ultraviolet resistant film for a QD-LCD surface and a preparation method thereof.
Background
QD-LCD (quantum dot liquid crystal display) is used as a new generation technology of the traditional liquid crystal display structure, adopts an ultraviolet light source, and emits RGB (red, green and blue) color light with wider color gamut and more vivid color at a specific frequency by controlling the diameter of the quantum dots of the nano semiconductor material. Such as the structure of the Chinese patent application for 'a liquid crystal display structure' (application number 201811608685.2). In order to improve the luminous efficiency of light emitted from a backlight source, the quantum dot liquid crystal display structure cancels a color filter which is positioned above the traditional structure and absorbs 2/3 light emitted from the backlight source, and linear light emission is realized through specific RGB colors emitted by quantum dots at the lower layer of the quantum dot liquid crystal display structure and correspondence of a micro lens and a quantum dot matrix, so that the luminous efficiency is improved. The improvement of the lighting effect can reduce the power loss, or under the same power consumption, the service life of the mobile electronic equipment is prolonged to three times, or the brightness of the display screen is improved to three times. The biggest difference between the upgraded quantum dot liquid crystal display and the traditional liquid crystal display is that: first, in the quantum dot liquid crystal display structure, RGB colors are formed by the color of the quantum dots themselves, and thus a color filter is not required. Second, the backlight source in the conventional lcd structure is a white LED light, but in the quantum dot lcd structure, the backlight source uses an ultraviolet light emitting diode.
In the conventional lcd structure, white LED light is used as the backlight, but the reason why uv LED must be used in the quantum dot lcd structure is as follows: first, white light is used as mixed light, which is actually formed by mixing three primary colors of RGB according to a certain proportion. In a general liquid crystal display structure, a color filter is used for filtering white light to realize RGB; however, in the quantum dot liquid crystal display structure, RGB light emitted from a single line emitted from quantum dots at the bottom of the structure replaces a color filter, and colored light may cause color mixing instead. Second, in the conventional lcd structure, the uv led cannot be used because uv rays are not visible light but violet light in the spectrum. Therefore, the light having no color passes through the color filter and remains without color. Further, from the viewpoint of light intensity, ultraviolet rays > blue light > red light > green light > white light. The purple light has high intensity and no color, can not cause final color mixing, is not pure, and is the best choice of the backlight source of the quantum dot liquid crystal display.
As is known, ultraviolet light refers to light in sunlight having a wavelength of 10 to 400 nanometers (nm). According to the wavelength range, the Ultraviolet (UVA) can be divided into UVB (UVA) (wavelength range is 320-400 nm, long wave), UVB (wavelength range is 290-320 nm, medium wave) and UVC (wavelength range is 200-290 nm, short wave). The ultraviolet ray has the sterilization function, so that the ultraviolet ray can be widely used in medical treatment, food, chemical industry and the like as a sterilization device. In addition, a proper amount of uv rays can help promote the generation of vitamin D in the human body, but if the human body is excessively exposed to uv rays, it may cause unrecoverable damage to the body. UVA having a strong penetration force through the epidermis and dermis causes skin aging problems including decrease in skin elasticity, wrinkle, freckle deterioration, etc., and in severe cases, induces skin cancer. In addition, UVA, UVB and UVC also cause severe damage to the eyes including the cornea, retina, etc., causing keratitis, temporary or permanent visual impairment, and even blindness in severe cases.
The utilization rate of the quantum dots to the strong light emitted by the ultraviolet light-emitting diode is generally 90%. Therefore, how to treat the remaining 10% of the strong light is the problem solved by this patent. In the prior art, a procedure of adding a film for blocking ultraviolet rays on the surface of a quantum dot liquid crystal display structure is not available. Because, the quantum dot liquid crystal display structure was originally focused on improving the light efficiency, but neglecting the adverse effects that the use of the uv led may cause.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to solve the problem that residual ultraviolet rays are generated when an ultraviolet light emitting diode is used as a backlight source in a quantum dot liquid crystal display structure, an ultraviolet-resistant film for the surface of a QD-LCD and a preparation method thereof are provided.
The technical scheme adopted by the invention is as follows: an ultraviolet resistant film for a QD-LCD surface, comprising, in parts by weight: 3.6-4.4 parts of solution A and 87-105 parts of solution-gel B;
the solution A comprises 12-16 parts of 2- [ 2-hydroxy-5-tert-octylphenyl) benzotriazole and 77-95 parts of methyl ethyl ketone;
the solution-gel B comprises 9-11 parts of solution-gel A, 36-44 parts of ethanol, 36-44 parts of distilled water and 2.7-3.3 parts of hydrochloric acid;
the solution-gel A comprises 9-11 parts of propyl trimethoxy silane, 9-11 parts of methyl trimethoxy silane and 18-22 parts of tetraethyl silicate.
Further, the anti-ultraviolet film for the QD-LCD surface comprises the following components in parts by weight: 4 parts of solution A and 96 parts of solution-gel B;
the solution A comprises 14 parts of 2- [ 2-hydroxy-5-tert-octylphenyl) benzotriazole and 86 parts of methyl ethyl ketone;
the solution-gel B comprises 10 parts of solution-gel A, 40 parts of ethanol, 40 parts of distilled water and 3 parts of hydrochloric acid;
the solution-gel A comprises 10 parts of propyl trimethoxy silane, 10 parts of methyl trimethoxy silane and 20 parts of tetraethyl silicate.
Further, the ultraviolet ray resistant film for the QD-LCD surface is used for coating on the QD-LCD surface.
Further, the surface-coated QD-LCD structure: including backlight module, lower floor's polaroid, thin-film transistor matrix, liquid crystal, upper polaroid, still include ultraviolet source, quantum dot matrix layer and microlens array layer, ultraviolet source is located backlight module's side, backlight module, quantum dot matrix layer, microlens array layer, lower floor's polaroid, thin-film transistor matrix, liquid crystal and upper polaroid are stromatolite in proper order and are set up, microlens has corresponding quantum dot material in the direction of perpendicular to stromatolite, the refraction position of microlens makes the RGB colour light perpendicular to stromatolite direction of refracting out.
The invention also discloses a preparation method of the anti-ultraviolet film for the QD-LCD surface, which comprises the following steps:
the method comprises the following steps: putting 9-11 parts of propyl trimethoxy silane, 9-11 parts of methyl trimethoxy silane and 18-22 parts of tetraethyl silicate into a flask, and stirring to obtain a solution-gel A;
step two: stirring 9-11 parts of solution-gel A, 36-44 parts of ethanol, 36-44 parts of distilled water and 2.7-3.3 parts of hydrochloric acid at room temperature to obtain solution-gel B;
step three: dissolving 12-16 parts of 2- [ 2-hydroxy-5-tert-octylphenyl) benzotriazole in 77-95 parts of methyl ethyl ketone to obtain a solution A;
step four: stirring 3.6-4.4 parts of the solution A and 87-105 parts of the solution-gel B, and coating the obtained sol-gel on the surface of the QD-LCD to prepare the ultraviolet-resistant film.
Further, in the first step, the solution-gel A comprises 10 parts of propyl trimethoxy silane, 10 parts of methyl trimethoxy silane and 20 parts of tetraethyl silicate;
in the second step, the solution-gel B comprises 10 parts of solution-gel A, 40 parts of ethanol, 40 parts of distilled water and 3 parts of hydrochloric acid;
in the third step, the solution A comprises 14 parts of 2- [ 2-hydroxy-5-tert-octylphenyl) benzotriazole and 86 parts of methyl ethyl ketone;
in the fourth step, 4 parts of solution A and 96 parts of solution-gel B.
Compared with the prior art, the beneficial effects of adopting the technical scheme are as follows: by adopting the technical scheme of the invention, aiming at the QD-LCD adopting an ultraviolet light source, the surface of the quantum dot liquid crystal display is coated with the ultraviolet-resistant film, and the ultraviolet-resistant film is like a film coated on a sunglasses lens to block ultraviolet rays, so that residual ultraviolet rays can be filtered, and the harm to a human body caused by the ultraviolet rays is eliminated.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Example 1
Taking 9 parts of propyl trimethoxy silane, 9 parts of methyl trimethoxy silane and 20 parts of tetraethyl silicate in a flask to obtain a solution-gel A;
stirring 9 parts of solution-gel A, 40 parts of ethanol, 40 parts of distilled water and 3 parts of hydrochloric acid at room temperature to obtain solution-gel B;
dissolving 14 parts of 2- [ 2-hydroxy-5-tert-octylphenyl) benzotriazole (namely UV329) in 77 parts of methyl ethyl ketone to obtain a solution A;
stirring the solution A4 parts and the solution-gel B87 parts, and coating the obtained sol-gel on the surface of the QD-LCD to prepare the ultraviolet-resistant film 1.
Example 2
Taking 10 parts of propyl trimethoxy silane, 10 parts of methyl trimethoxy silane and 18 parts of tetraethyl silicate in a flask to obtain solution-gel A;
stirring 10 parts of solution-gel A, 36 parts of ethanol, 36 parts of distilled water and 2.7 parts of hydrochloric acid at room temperature to obtain solution-gel B;
dissolving 12 parts of 2- [ 2-hydroxy-5-tert-octylphenyl) benzotriazole (namely UV329) in 86 parts of methyl ethyl ketone to obtain a solution A;
stirring 3.6 parts of the solution A and 96 parts of the solution-gel B, and coating the obtained sol-gel on the surface of the QD-LCD to prepare the ultraviolet-resistant film 2.
Example 3
Taking 10 parts of propyl trimethoxy silane, 10 parts of methyl trimethoxy silane and 20 parts of tetraethyl silicate in a flask to obtain solution-gel A;
stirring 10 parts of solution-gel A, 40 parts of ethanol, 40 parts of distilled water and 3 parts of hydrochloric acid at room temperature to obtain solution-gel B;
dissolving 14 parts of 2- [ 2-hydroxy-5-tert-octylphenyl) benzotriazole (namely UV329) in 86 parts of methyl ethyl ketone to obtain a solution A;
stirring the solution A4 parts and the solution-gel B96 parts, and coating the obtained sol-gel on the surface of the QD-LCD to obtain the anti-ultraviolet film 3.
Example 4
Taking 10 parts of propyl trimethoxy silane, 10 parts of methyl trimethoxy silane and 22 parts of tetraethyl silicate in a flask to obtain solution-gel A;
stirring 10 parts of solution-gel A, 44 parts of ethanol, 44 parts of distilled water and 3.3 parts of hydrochloric acid at room temperature to obtain solution-gel B;
dissolving 16 parts of 2- [ 2-hydroxy-5-tert-octylphenyl) benzotriazole (namely UV329) in 86 parts of methyl ethyl ketone to obtain a solution A;
stirring 4.4 parts of the solution A and 96 parts of the solution-gel B, and coating the obtained sol-gel on the surface of the QD-LCD to prepare the anti-ultraviolet film 4.
Example 5
Taking 11 parts of propyl trimethoxy silane, 11 parts of methyl trimethoxy silane and 20 parts of tetraethyl silicate in a flask to obtain a solution-gel A;
stirring 11 parts of solution-gel A, 40 parts of ethanol, 40 parts of distilled water and 3 parts of hydrochloric acid at room temperature to obtain solution-gel B;
dissolving 14 parts of 2- [ 2-hydroxy-5-tert-octylphenyl) benzotriazole (namely UV329) in 95 parts of methyl ethyl ketone to obtain a solution A;
stirring the solution A4 parts and the solution-gel B105 parts, and coating the obtained sol-gel on the surface of the QD-LCD to prepare the anti-ultraviolet film 5.
Example 6
Taking 10 parts of propyl trimethoxy silane, 10 parts of methyl trimethoxy silane and 20 parts of tetraethyl silicate in a flask to obtain solution-gel A;
stirring 10 parts of solution-gel A, 40 parts of ethanol, 40 parts of distilled water and 3 parts of hydrochloric acid at room temperature to obtain solution-gel B;
dissolving 15 parts of 2- [ 2-hydroxy-5-tert-octylphenyl) benzotriazole (namely UV329) in 86 parts of methyl ethyl ketone to obtain a solution A;
stirring 3.8 parts of the solution A and 96 parts of the solution-gel B, and coating the obtained sol-gel on the surface of the QD-LCD to prepare the ultraviolet-resistant film 6.
Test No.)
Control group 1, control group 2, control group 3, control group 4 and experimental group 1 were set. Control 1 is the uv residual of the uncoated QD-LCD and experimental 1 is example 3.
Preparation of control 2:
taking 10 parts of propyl trimethoxy silane, 10 parts of methyl trimethoxy silane and 20 parts of tetraethyl silicate in a flask to obtain solution-gel A;
stirring 10 parts of solution-gel A, 40 parts of ethanol, 40 parts of distilled water and 3 parts of hydrochloric acid at room temperature to obtain solution-gel B;
dissolving 14 parts of 2- (2-hydroxy-5-benzyl) benzotriazole (namely UVP) in 86 parts of methyl ethyl ketone to obtain a solution A;
stirring the solution A4 parts and the solution-gel B96 parts, and coating the obtained sol-gel on the surface of the QD-LCD to obtain the anti-ultraviolet film 6.
Preparation of control 3:
taking 10 parts of propyl trimethoxy silane, 10 parts of methyl trimethoxy silane and 20 parts of tetraethyl silicate in a flask to obtain solution-gel A;
stirring 10 parts of solution-gel A, 40 parts of ethanol, 40 parts of distilled water and 3 parts of hydrochloric acid at room temperature to obtain solution-gel B;
dissolving 14 parts of 2'- (2' -hydroxy-3 '-tert-butyl-5' -methylphenyl) -5-chlorobenzotriazole (namely UV326) in 86 parts of methyl ethyl ketone to obtain a solution A;
stirring the solution A4 parts and the solution-gel B96 parts, and coating the obtained sol-gel on the surface of the QD-LCD to obtain the anti-ultraviolet film 7.
Preparation of control group 4:
taking 10 parts of propyl trimethoxy silane, 10 parts of methyl trimethoxy silane and 20 parts of tetraethyl silicate in a flask to obtain solution-gel A;
stirring 10 parts of solution-gel A, 40 parts of ethanol, 40 parts of distilled water and 3 parts of hydrochloric acid at room temperature to obtain solution-gel B;
dissolving 14 parts of 2-hydroxy-4-n-octoxybenzophenone (namely UV531) in 86 parts of methyl ethyl ketone to obtain a solution A;
stirring the solution A4 parts and the solution-gel B96 parts, and coating the obtained sol-gel on the surface of the QD-LCD to obtain the anti-ultraviolet film 8.
An embodiment of a QD-LCD structure: including backlight module (including reflector panel and light guide plate that stromatolite in proper order), lower floor's polaroid, thin film transistor matrix, liquid crystal, upper polaroid, still include ultraviolet source, quantum dot matrix layer and microlens array layer, ultraviolet source is located backlight module's side, backlight module, quantum dot matrix layer, microlens array layer, lower floor's polaroid, thin film transistor matrix, liquid crystal and upper polaroid are the stromatolite setting in proper order, microlens (the microlens size is less than the pixel width) has corresponding quantum dot material in the direction of perpendicular to stromatolite, the material size of quantum dot should satisfy the condition that forms the RGB colour, the refraction position of microlens makes refraction light be perpendicular to stromatolite direction. The quantum dot positions of the quantum dot matrix layer correspond to the thin film transistors one by one in the direction perpendicular to the lamination layer. A QD substance is arranged on the polarizer on the lower layer, and the projected UV energy can accurately obtain RGB colors by setting the size of the QD substance; the uv light source produces blue, violet, red through the quantum dot matrix layer, the RGB colors obtained at this time being diffuse. When the quantum dot substance emits RGB light, the scattered light is emitted to the outside, and in this embodiment, the micro lens is disposed between the quantum dot matrix layer and the lower polarizer, so that disordered RGB light is emitted from individual quantum dots, and the RGB light passes through the micro lens corresponding to the upper side, so that the scattered light in the LCD structure can be well utilized to form unidirectional RGB color light. Compared with the traditional structure, the 2/3 light absorbed by the color filter can be completely used, the light effect is effectively improved, and the electric quantity consumed by the backlight module is greatly reduced. But there is a surplus of uv light through the QD-LCD of the above structure. The uv resistant film of the present invention is intended to absorb the remaining portion of uv light.
The control group 1, the control group 2, the control group 3, the control group 4 and the experimental group 1 were subjected to the test for the residual content of uv light under the same condition as shown in table 1.
TABLE 1
| Numbering | UV absorbing type agent | UV-A | UV-B | UV-C |
| Control group 1 | Is not coated with | 38.53％ | 16.05％ | 1.77％ |
| Control group 2 | UV P | 4.58％ | 0.37％ | 0.63％ |
| Control group 3 | UV 326 | 3.20％ | 0.12％ | 0.20％ |
| Control group 4 | UV 531 | 7.07％ | 0.01％ | 0.00％ |
| Experimental group 1 | UV 329 | 0.21％ | 0.01％ | 0.05％ |
From the experimental results, it can be seen that the barrier effect of the control group 2, the control group 3 and the control group 4 is considerably improved compared with the reference of the uncoated control group 1. Particularly, the blocking effect of experimental group 3 was optimal, and excellent blocking effect could be achieved in each wavelength band of ultraviolet rays (UV-A, UV-B, UV-C). Therefore, the ultraviolet ray blocking film coated by the solution-gel in the invention can realize excellent blocking effect.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed. Those skilled in the art to which the invention pertains will appreciate that insubstantial changes or modifications can be made without departing from the spirit of the invention as defined by the appended claims.
Claims (5)
1. An ultraviolet resistant film for a QD-LCD surface, comprising, in parts by weight: 3.6-4.4 parts of solution A and 87-105 parts of solution-gel B;
the solution A comprises 12-16 parts of 2- (2-hydroxy-5-tert-octylphenyl) benzotriazole and 77-95 parts of methyl ethyl ketone;
the solution-gel B comprises 9-11 parts of solution-gel A, 36-44 parts of ethanol, 36-44 parts of distilled water and 2.7-3.3 parts of hydrochloric acid;
the solution-gel A comprises 9-11 parts of propyl trimethoxy silane, 9-11 parts of methyl trimethoxy silane and 18-22 parts of tetraethyl silicate;
the ultraviolet resistant film for the QD-LCD surface is used for coating on the QD-LCD surface.
2. The uv resistant film for the QD-LCD surface of claim 1, wherein the uv resistant film for the QD-LCD surface comprises, in parts by weight: 4 parts of solution A and 96 parts of solution-gel B;
the solution A comprises 14 parts of 2- (2-hydroxy-5-tert-octylphenyl) benzotriazole and 86 parts of methyl ethyl ketone;
the solution-gel B comprises 10 parts of solution-gel A, 40 parts of ethanol, 40 parts of distilled water and 3 parts of hydrochloric acid;
the solution-gel A comprises 10 parts of propyl trimethoxy silane, 10 parts of methyl trimethoxy silane and 20 parts of tetraethyl silicate.
3. The uv resistant film for the QD-LCD surface of claim 1, wherein the surface-coated QD-LCD structure: including backlight module, lower floor's polaroid, thin-film transistor matrix, liquid crystal, upper polaroid, still include ultraviolet source, quantum dot matrix layer and microlens array layer, ultraviolet source is located backlight module's side, backlight module, quantum dot matrix layer, microlens array layer, lower floor's polaroid, thin-film transistor matrix, liquid crystal and upper polaroid are stromatolite in proper order and are set up, microlens has corresponding quantum dot material in the direction of perpendicular to stromatolite, the refraction position of microlens makes the RGB colour light perpendicular to stromatolite direction of refracting out.
4. A method for preparing an anti-ultraviolet film for a QD-LCD surface, comprising the following steps:
the method comprises the following steps: putting 9-11 parts of propyl trimethoxy silane, 9-11 parts of methyl trimethoxy silane and 18-22 parts of tetraethyl silicate into a flask, and stirring to obtain a solution-gel A;
step two: stirring 9-11 parts of solution-gel A, 36-44 parts of ethanol, 36-44 parts of distilled water and 2.7-3.3 parts of hydrochloric acid at room temperature to obtain solution-gel B;
step three: dissolving 12-16 parts of 2- (2-hydroxy-5-tert-octylphenyl) benzotriazole in 77-95 parts of methyl ethyl ketone to obtain a solution A;
step four: stirring 3.6-4.4 parts of the solution A and 87-105 parts of the solution-gel B, and coating the obtained sol-gel on the surface of the QD-LCD to prepare the ultraviolet-resistant film.
5. The method of preparing the ultraviolet resistant film for the QD-LCD surface of claim 4, wherein in the first step, the solution-gel a comprises 10 parts of propyltrimethoxysilane, 10 parts of methyltrimethoxysilane, 20 parts of tetraethyl silicate;
in the second step, the solution-gel B comprises 10 parts of solution-gel A, 40 parts of ethanol, 40 parts of distilled water and 3 parts of hydrochloric acid;
in the third step, the solution A comprises 14 parts of 2- (2-hydroxy-5-tert-octylphenyl) benzotriazole and 86 parts of methyl ethyl ketone;
in the fourth step, 4 parts of solution A and 96 parts of solution-gel B.
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| CN101273293A (en) * | 2005-09-26 | 2008-09-24 | 富士胶片株式会社 | Polarizing plate and liquid crystal display device |
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| ATE535563T1 (en) * | 2006-12-19 | 2011-12-15 | Evonik Degussa Gmbh | SOL-GEL PROCESS FOR PRODUCING PROTECTIVE FILMS FOR POLYMER SUBSTRATES |
| CN101376569B (en) * | 2008-07-29 | 2011-01-19 | 成都理工大学 | Preparation of glass coating liquid having ultraviolet shielding function |
| KR101911994B1 (en) * | 2015-08-20 | 2018-10-25 | 동우 화인켐 주식회사 | Adhesive Composition and Polarizing Plate Comprising the Same |
| CN106125403A (en) * | 2016-09-05 | 2016-11-16 | 深圳市华星光电技术有限公司 | A kind of backlight module and liquid crystal display |
| CN206489288U (en) * | 2016-12-09 | 2017-09-12 | 康佳集团股份有限公司 | Anti- blue light colored filter, LED LCDs and LED liquid crystal television |
| CN108611025A (en) * | 2018-04-10 | 2018-10-02 | 浙江祥邦科技股份有限公司 | A kind of super fast curing solar energy packaging adhesive film and preparation method thereof |
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| WO2002042281A1 (en) * | 2000-11-27 | 2002-05-30 | Ciba Specialty Chemicals Holding Inc. | Substituted 5-aryl and 5-heteroaryl-2-(2-hydroxyphenyl)-2h-benzotriazole derivatives as uv absorbers |
| CN101273293A (en) * | 2005-09-26 | 2008-09-24 | 富士胶片株式会社 | Polarizing plate and liquid crystal display device |
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