Printing ink for high-transmittance colored cover plate and high-transmittance colored cover plate

Abstract

The invention discloses printing ink for a high-transmittance color cover plate and the high-transmittance color cover plate. The printing ink for the high-transmittance color cover plate comprises the following raw materials in parts by weight: 1-50 parts of optical refraction particles; 50 to 100 parts of transparent gloss oil; 10 to 300 parts of a diluent; 9-11 parts of a curing agent; 3-5 parts of an adherence promoter; the printing ink presents a preset color through optical refraction particles, is in a colorless transparent state in a screen-on state, and can present rich and gorgeous colors in a screen-off state; the high-transmittance colored cover plate made of the high-transmittance colored glass has the advantages of high transmittance, low reflectivity and personalized color effect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of display cover plate, and particularly relates to a high-transparency color cover plate ink and a high-transparency color cover plate. BACKGROUND

[0002] The display cover plate is a key component in the display module of modern electronic equipment, is a transparent or semi-transparent material covering the outermost layer of the display screen, is usually located above the liquid crystal screen (LCD) or organic light-emitting diode screen (OLED), and mainly plays a role of protecting the screen, improving the display effect and enhancing the user experience.

[0003] At present, the design patterns of the interior and exterior decoration are colorful, but the display cover plate is still a traditional transparent cover plate. In the field of intelligent display, the color display effect of the cover plate is usually realized by pasting a color film layer on the surface of the transparent cover plate in the prior art.

[0004] For example, Chinese Patent CN 209767982 U discloses a handheld terminal and a color cover plate thereof, and specifically discloses that the color cover plate comprises a substrate layer, a color UV glue layer and a decorative film layer. The color cover plate adopts the color UV glue layer with a preset color as a bearing, and directly forms a texture on the surface of the color UV glue layer. After the decorative film layer is plated, the surface of the color cover plate presents the required color and pattern through light reflection. However, the UV color glue layer of this color cover plate is limited by the process during use, can only be better applied to a planar substrate and cannot be customized in pattern, and the color can only be monochromatic. Moreover, when this color cover plate is used in a display scene, there is obvious color difference, and the display effect is poor. SUMMARY

[0005] To solve the above technical problems, the present application provides a high-transparency color cover plate ink. The ink presents a preset color by using optical refractive particles, is colorless and transparent in the bright screen state, and can present rich and gorgeous colors in the screen-off state. The ink can be coated by using various construction methods, and is suitable for free-form surface cover plates.

[0006] The present application also provides a high-transparency color cover plate, which is made of the high-transparency color ink layer of the present application. The high-transparency color cover plate has high transmittance, low reflectivity and personalized color effect.

[0007] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0008] The high-transparency color cover plate ink provided by the present application comprises the following raw materials by weight: optical refractive particles 1-50 parts; transparent light oil 50-100 parts; diluent 10-300 parts; curing agent 9-11 parts; and adhesion agent 3-5 parts.

[0009] The optical refraction particle base material is a pearl powder of mica base material with a particle size less than 35 microns.

[0010] The transparent light oil is composed of resin and solvent; the resin is any one or more of acrylic resin, polyurethane resin, nitrocellulose; the solvent is an organic solvent capable of dissolving the resin.

[0011] The solvent is any one or more of ethyl acetate, butyl acetate, toluene, xylene.

[0012] The transparent light oil is composed of resin and solvent in a mass ratio of 3:7.

[0013] The diluent is a ketone diluent, preferably isofuroyl ketone.

[0014] The curing agent is an aliphatic polyisocyanate substance, preferably hexamethylene diisocyanate.

[0015] The adhesion agent is a silane coupling agent, preferably any one or more of aminopropyl triethoxysilane, glycidyl ether oxypropyl trimethoxysilane, vinyl trimethoxysilane.

[0016] The application also provides a high-transmittance color cover plate, which is made of the ink according to the application.

[0017] The high-transmittance color cover plate sequentially comprises an integral black ink layer, a high-transmittance color ink layer, a transparent substrate and a coating layer from bottom to top.

[0018] Further, the coating layer is any one or more of an AR anti-reflection layer, an AG anti-glare layer and an AF anti-fouling layer.

[0019] The ink for the high-transmittance color cover plate according to the application presents a preset color by using optical refraction particles, uses transparent light oil as a film-forming matrix to stabilize the optical refraction particles in the coating layer by wrapping them, and forms a three-dimensional network structure by the reaction of the resin in the transparent light oil and the curing agent in the formula, which can improve the chemical resistance and weather resistance of the coating layer; the addition of the adhesion agent can improve the adhesion of the coating layer to the substrate, and the cooperation of the raw materials gives the coating layer good adhesion, flexibility and glossiness; and the use of the diluent can adjust the viscosity of the ink, facilitating the construction of the ink and the volatilization and film formation after the construction.

[0020] The ink for the high-transmittance color cover plate according to the application can realize controllable adjustment of the transmittance, reflectance, glossiness and color by adjusting the ratio of the raw materials in the formula, and realizes on-demand customization.

[0021] Compared with the prior art, the application has the following beneficial effects:

[0022] 1.The ink for high-transmittance color cover plate provided by the present application, through accurate proportioning and synergistic effect of each raw material, can realize the balance of optical performance, film forming quality and construction process, and the ink layer formed is colorless and transparent in the bright screen state, and can present rich and gorgeous colors in the screen-off state, which can ensure clear display effect when the display module is turned on, and can present colors in harmony with the overall design style when the display module is turned off, meeting the needs of customization.

[0023] 2.The ink for high-transmittance color cover plate provided by the present application is convenient to construct, such as screen printing, pad printing, spraying, coating and the like to form a coating layer, and the film thickness can be controlled to be less than 0.5 microns, which is suitable for cover plates of various shapes. When the screen printing method is used, various pattern color customization can be realized through screen customization, and the applicability is very flexible.

[0024] 3.The high-transmittance color cover plate provided by the present application, through color ink printing on the bottom surface of the glass substrate, AR, AG anti-glare layer and / or AF coating on the surface of the glass substrate, can effectively protect the high-transmittance color ink layer, and can realize high transmittance, low reflectivity and personalized color effect. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The structure diagram of the high-transmittance color cover plate provided by the present application, wherein 1 is an integrated black ink layer, 2 is a high-transmittance color ink layer, 3 is a transparent substrate, and 4 is a coating layer. DETAILED DESCRIPTION

[0026] The present application will be described in detail below in combination with examples.

[0027] The mica substrate pearl luster powder used in the examples has a particle size of less than 35 microns, which is an interference blue optical refractive particle.

[0028] Example 1

[0029] An ink for high-transmittance color cover plate, suitable for screen printing process, is composed of the following raw materials by weight: 10 parts of mica substrate pearl luster powder; 100 parts of transparent varnish; 17 parts of isofurone; 11 parts of hexamethylene diisocyanate; 4 parts of aminopropyl triethoxysilane; wherein the transparent varnish is composed of acrylic acid resin with a molecular weight of 20000-100000 and ethyl acetate in a mass ratio of 3:7.

[0030] The preparation method of the high-transmittance color cover plate ink is as follows: mix the formula amount of each raw material, use a high-speed dispersing machine to disperse for 30 minutes, and then filter.

[0031] Example 2

[0032] A high-transparency color cover plate ink suitable for spray coating process, which is composed of the following raw materials in parts by weight: 10 parts of mica substrate pearl powder; 100 parts of transparent varnish; 220 parts of isoforone; 11 parts of hexamethylene diisocyanate; 4 parts of glycidyl ether oxypropyl trimethoxysilane; wherein the transparent varnish is composed of polyurethane resin with a molecular weight of 20000-50000 and butyl acetate in a mass ratio of 4:6.

[0033] The preparation method is the same as that of Example 1.

[0034] Example 3

[0035] The high-transparency color ink layer of the high-transparency color cover plate is made of the ink in Example 1 above, and the specific process is as follows:

[0036] (1) The prepared high-transparency color cover plate ink is printed on one surface of the glass substrate by using a silk screen printing method of a silk screen printing machine, the printing film thickness is 10 μm, and the glass substrate is placed in a 150℃ tunnel furnace for surface drying to form a high-transparency color ink layer on the surface of the glass substrate;

[0037] (2) The BM area screen is replaced to print an integral black ink on the high-transparency color ink layer, after printing the integral black ink, the glass substrate is again placed in a 150℃ tunnel furnace for surface drying, and finally placed in a curing furnace for curing at 170℃ for 30 minutes to form an integral black ink layer;

[0038] (3) AR coating and AF coating are performed on the other surface of the glass substrate to obtain a high-transparency color cover plate.

[0039] Example 4

[0040] The high-transparency color ink layer of the high-transparency color cover plate is made of the ink in Example 2 above, and the specific process is as follows:

[0041] (1) The prepared high-transparency color cover plate ink is sprayed on the glass substrate by using a spraying method of a multi-axis spraying robot, the film thickness is 10 μm, and the glass substrate is placed in a 150℃ tunnel furnace for surface drying to form a high-transparency color ink layer on the surface of the glass substrate;

[0042] (2) The BM area screen is replaced to print an integral black ink on the high-transparency color ink layer, after printing the integral black ink, the glass substrate is again placed in a 150℃ tunnel furnace for surface drying, and finally placed in a curing furnace for curing at 170℃ for 30 minutes to form an integral black ink layer;

[0043] (3) AR coating and AF coating are performed on the other surface of the glass substrate to obtain a high-transparency color cover plate.

[0044] Comparative Example 1

[0045] An ink is composed of the following raw materials by weight: copper phthalocyanine 10 parts; transparent varnish 100 parts; isofuroline 17 parts; hexamethylene diisocyanate 11 parts; aminopropyl triethoxysilane 4 parts.

[0046] The ink layer is formed on the surface of the glass substrate by the method of step (1) in Example 3, and then the color cover plate is obtained according to the methods of step (2) and step (3).

[0047] Comparative Example 2

[0048] An ink is composed of the following raw materials by weight: copper phthalocyanine 10 parts; transparent varnish 100 parts; isofuroline 220 parts; hexamethylene diisocyanate 11 parts; glycidyl ether oxypropyl trimethoxysilane 4 parts.

[0049] The ink layer is formed on the surface of the glass substrate by the method of step (1) in Example 4, and then the color cover plate is obtained according to the methods of step (2) and step (3).

[0050] Test Example 1

[0051] The adhesion, weather resistance and other tests are carried out on the cover plates in Example 3, Example 4, Comparative Example 1 and Comparative Example 2, the test conditions are shown in Table 1, and the test results are shown in Table 2.

[0052] Table 1

[0053]

[0054] Table 2

[0055]

[0056] From Table 2, it can be seen that the high-transparency color cover plate meets the requirements of the vehicle weather resistance standard.

[0057] Test Example 2

[0058] The optical indicators and color deviation of the high-transparency color cover plates in Example 3 and Example 4, and the conventional subtractive method semi-transparent ink Comparative Example 1 and Comparative Example 2 are tested, and the test results are shown in Table 3 and Table 4, respectively.

[0059] Table 3

[0060]

[0061] As can be seen from Table 3, the high-transmittance color cover plate in Example 3 and Example 4 meets the characteristics of high transmittance, low reflectivity, low haze, low flash point, and high clarity under the premise of high color saturation; and the conventional subtractive color method semi-transparent ink in Comparative Example 1 and Comparative Example 2 cannot achieve the optical indexes of high transmittance, low haze, and high clarity under the premise of high color saturation, and cannot be applied to display cover plate and other use scenarios.

[0062] Table 4

[0063]

[0064] As can be seen from Table 4, the high-transmittance color cover plate in Example 3 and Example 4 has little influence on the color accuracy of the display module under different background colors of the display module, and meets the application characteristics of high-transmittance display; and the conventional subtractive color method semi-transparent ink in Comparative Example 1 and Comparative Example 2 has obvious color deviation under black and white pictures, which will affect the display.

[0065] The above detailed description of the ink for high-transmittance color cover plate and the high-transmittance color cover plate in the foregoing reference examples is illustrative rather than limiting, and a number of examples can be listed according to the defined range, and thus the changes and modifications without departing from the overall concept of the present application shall fall within the protection scope of the present application.

Claims

1. A high-transparency colored cover ink, characterized in that, The ink comprises the following raw materials in parts by weight: 1-50 parts optical refractive particles; 50-100 parts transparent varnish; 10-300 parts thinner; 9-11 parts curing agent; and 3-5 parts adhesion agent.

2. The high-transparency colored cover ink according to claim 1, characterized in that, The optical refractive particles are pearlescent powders made from mica substrate with a particle size of less than 35 μm.

3. The high-transparency colored cover ink according to claim 1, characterized in that, The transparent varnish is composed of resin and solvent; the resin is any one or more of acrylic resin, polyurethane resin, and nitrocellulose; the solvent is an organic solvent capable of dissolving the resin.

4. The high-transparency colored cover ink according to claim 3, characterized in that, The solvent is any one or more of ethyl acetate, butyl acetate, toluene, and xylene.

5. The high-transparency colored cover ink according to claim 1, characterized in that, The diluent is a ketone diluent; the curing agent is an aliphatic polyisocyanate.

6. The high-transparency colored cover ink according to claim 1, characterized in that, The adhesion agent is a silane coupling agent.

7. The high-transparency colored cover ink according to claim 1, characterized in that, The diluent is isoflurane; the curing agent is hexamethylene diisocyanate; and the adhesion agent is any one or more of aminopropyltriethoxysilane, glycidoxypropyltrimethoxysilane, and vinyltrimethoxysilane.

8. A high-transparency colored cover plate, characterized in that, The high-transparency colored cover plate is made with the ink described in any one of claims 1-7 to create a high-transparency colored ink layer.

9. The high-transparency colored cover plate according to claim 8, characterized in that, The high-transparency colored cover plate comprises, from bottom to top, an integral black ink layer, a high-transparency colored ink layer, a transparent substrate, and a coating layer.

10. The high-transparency colored cover plate according to claim 9, characterized in that, The coating layer is any one or more of AR anti-reflective layer, AG anti-glare layer, and AF anti-fouling layer.

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