TWI792112B - Glass with low color difference and low scattering - Google Patents

Abstract

A glass with low color difference and low scattering includes a glass substrate and a shading layer. The shading layer is disposed on a partial surface of the glass substrate. The glass substrate has a Y value of luminous reflectance not greater than 0.03 on the portion of the glass substrate corresponding to the position of the shading layer. Therefore, when under different angles, the color difference of the glass substrate at different viewpoints is lowered, such that the dirt, oil marks, fingerprints, or flaws attaching on the glass will not be easily seen.

Description

Glass with low chromatic aberration and low scattering

The present invention relates to a kind of glass, in particular to a kind of glass with low chromatic aberration and low scattering at different viewing angles.

Press, as the glass of the display device, in order to shield the electronic circuits or other components on the surrounding area of the display device, a light-shielding layer, an ink layer or a black matrix (Black Matrix, BM) will be provided in the surrounding area of the glass, and the display device Viewers can only see the light-shielding layer, ink layer or black matrix (BM, Black Matrix) from the front of the glass, so as to provide visibility of the appearance of the display device.

The front of the glass is generally coated with an anti-reflection layer (Anti-Reflection, AR) to increase the light transmittance of the glass and reduce the reflectance. However, at different viewing angles, there is still a problem of chromatic aberration as a whole. In addition, when fingerprints stick to the glass, especially the areas corresponding to the light-shielding layer, ink layer or black matrix (Black Matrix, BM), after scattering Finally, the viewer will clearly see fingerprints, dirt, etc.

In order to solve the above problems, the present invention discloses a glass with low chromatic aberration and low scattering. Under the mode of excluding specular reflection light, the visual reflectance Y value of the substrate is not greater than 0.03. In this way, under different angles, the problem of glass chromatic aberration can be reduced.

To achieve the above purpose, an embodiment of the present invention provides a glass with low chromatic aberration and low scattering, which includes a glass substrate and a light-shielding layer. The light-shielding layer is disposed on a part of the surface of the glass substrate, and the position of the glass substrate corresponding to the light-shielding layer is in the mode of excluding specular reflection light (Specular Component Exclude, SCE), and the visual reflectance Y value is not greater than 0.03.

In another embodiment of the present invention, the a* value of the light-shielding layer is 0±0.05, the b* value is 0±0.05, and the L* value is less than 0.5.

In another embodiment of the present invention, wherein the value of L* is less than 0.2.

In another embodiment of the present invention, the components of the light-shielding layer include acrylic resin, carbon black, solvent, filler, defoamer and leveling agent.

In another embodiment of the present invention, wherein, the solvent includes isophorone and isopropanol; the filler includes barium sulfate and calcium carbonate; and the defoamer is a non-silicon type defoamer.

In another embodiment of the present invention, wherein, the content of the acrylic resin is 50% to 65% by weight, the content of the carbon black is 10 to 15% by weight, and the content of the isophorone is 10% by weight. Percent by weight to 15 percent by weight, the content of the isopropanol is 2 percent by weight to 3 percent by weight, the content of the barium sulfate is 5 percent by weight to 10 percent by weight, the content of the calcium carbonate is 5 percent by weight to 10 percent by weight % by weight, the content of the non-silicon type defoamer is 1% by weight to 2% by weight, and the content of the leveling agent is 1% by weight to 3% by weight.

In another embodiment of the present invention, wherein, the average particle diameter of the carbon black is equal to or less than 70 nm.

In another embodiment of the present invention, wherein, the glass substrate has a first surface and An oppositely arranged second surface, the light-shielding layer is arranged on the periphery of the second surface; the first surface is provided with an anti-reflection layer, and the anti-reflection layer is different from the first surface provided with an anti-fouling layer .

In another embodiment of the present invention, wherein, the light-shielding layer is formed on the periphery of the second surface by screen printing, spraying, or transfer printing.

In another embodiment of the present invention, the L* value, a* value, b* value and Y value are measured by D65 light source and 10° viewing angle.

In this way, the present invention can reduce the problem of chromatic aberration caused by different angles at non-specular light angles. Therefore, compared with the conventional glass with an ink layer, the present invention can eliminate dirt, oil stains, and fingerprints attached to the glass. Or defects have an invisible effect.

100: Glass with low chromatic aberration and low scattering

10: Glass substrate

11: The first side

12: Second side

20: shading layer

30: Anti-reflection layer

40: antifouling layer

[Figure 1] is a schematic diagram of the structure of the glass with low chromatic aberration and low scattering of the present invention.

[ Fig. 2 ] is a schematic diagram of the curves of the color difference and the viewing angle of the present invention and conventional glass with an ink layer.

Exemplary embodiments of the present invention are described in detail below with reference to the accompanying drawings, and it is not intended to limit the technical principles of the present invention to specific disclosed embodiments, but the scope of the present invention is only limited by the scope of the patent application, covering substitutions, modifications and equivalent.

Please refer to FIG. 1 , which is a low chromatic aberration and low scattering glass 100 of the present invention, which can be used in displays. The low chromatic aberration and low scattering glass 100 includes a glass substrate 10 and a light shielding layer 20 .

The glass substrate 10 is flat glass or 2.5D glass. The glass substrate 10 has a first surface 11 and an opposite second surface 12 . The first surface 11 is the front side (namely, the viewing surface), and the second side 12 is the back side. Wherein, the first surface 11 is provided with an anti-reflection layer 30 (Anti-Reflection, AR), and the anti-reflection layer 30 is different from the first surface 11 provided with an anti-fouling layer 40 .

The light-shielding layer 20 is disposed on a part of the surface of the glass substrate 10 . In the embodiment of the present invention, the light-shielding layer 20 is formed on the periphery of the second surface 12 by screen printing, spraying, or transfer printing, but it is not limited thereto. ℃ baking solidification. The electronic circuits in the surrounding area of the display can be shielded through the light-shielding layer 20 . The components of the light-shielding layer 20 include acrylic resin, carbon black, solvent, filler, defoaming agent and leveling agent. The solvent includes isophorone and isopropanol, the filler includes barium sulfate and calcium carbonate, and the defoamer is a non-silicon type defoamer. And the content of carbon black is 10 to 15 weight percent, the content of isophorone is 10 weight percent to 15 weight percent, the content of isopropyl alcohol is 2 weight percent to 3 weight percent, and the content of barium sulfate is 5 weight percent to 10% by weight, the content of calcium carbonate is 5% to 10% by weight, the content of non-silicon type defoamer is 1% to 2% by weight, and the content of leveling agent is 1% to 3% by weight. Wherein, the average diameter of carbon black is equal to or less than 70 nm.

The measurement of the optical properties of glass 100 is carried out with the CM 2600d color difference meter of KONICA MINOLTA Co., Ltd. under the condition of D65 light source and 10° viewing angle to measure L* value, a* value, b* value and Y value, L* represents the brightness, a* represents the chroma of red-green, b* represents the chroma of yellow-blue, and Y is the visual reflectance. Wherein, the measurement position is the position of the glass substrate 10 corresponding to the light-shielding layer 20, that is, the periphery of the first surface 11 (anti-fouling layer 40) of the glass substrate 10 is measured corresponding to the light-shielding layer 20, and the mirror surface is excluded at this position. In the mode of reflected light (Specular Component Exclude, SCE), the L* value is less than 0.5. In the embodiment of the present invention, the L* value is smaller than 0.2, and the a* value is 0±0.05, and the b* value is 0±0.05. Rate Y value is not greater than 0.03.

Then, the effect of the particle size of carbon black on reducing SCE is illustrated with a plurality of embodiments and comparative examples of the present invention. As shown in Table 1, the scattering of light is suppressed under the condition that the average particle size of carbon black is equal to or less than 70nm. , thereby reducing the L* value of SCE.

In the SCE mode, the scattered light is almost zero, so at non-specular light angles, the dirt, oil, fingerprints or defects attached to the glass 100 with low chromatic aberration and low scattering will be invisible, and relatively Compared with the conventional glass with an ink layer, it has the problem of reducing the color difference caused by different angles.

As shown in Figure 2, it is a schematic diagram showing the curves of the color difference and the viewing angle of the present invention and the conventional glass with an ink layer. From the figure, it can be clearly drawn that the viewing angle of the present invention is between 10° and 60°. The angular chromatic aberrations are consistent without obvious fluctuations, while the conventional glass has obvious fluctuations between the viewing angle of 30° and 60°, and the overall angular chromatic aberration △E value of the conventional glass is higher than the angular chromatic aberration △E value of the present invention Large, so the present invention has the characteristics of low color difference, so as to increase the visibility of the glass 100.

Based on the above, it is not difficult to find that the advantages of the present invention are as follows: the low chromatic aberration and low scattering glass 100 of the present invention has a visual reflectance Y value of not more than 0.03 under the mode of excluding specular reflection light (SCE), so that the present invention has low chromatic aberration advantages, enabling Dirt, grease, fingerprints or defects attached to the glass 100 with low chromatic aberration and low scattering are not easy to be observed, just like the effect of invisibility.

Although the present invention has been described in terms of a preferred embodiment, those skilled in the art can make various changes without departing from the spirit and scope of the present invention. The above-mentioned embodiments are only used to illustrate the present invention, and are not intended to limit the scope of the present invention. All modifications or changes that do not violate the spirit of the present invention belong to the patent scope of the present invention.

100: Glass with low chromatic aberration and low scattering

10: Glass substrate

11: The first side

12: Second side

20: shading layer

30: Anti-reflection layer

40: antifouling layer

Claims (9)

A glass with low chromatic aberration and low scattering, which includes: a glass substrate; and a light-shielding layer, which is arranged on a part of the surface of the glass substrate. In this case, the visual reflectance Y value is not greater than 0.03, and the light-shielding layer contains carbon black, and the average particle size of the carbon black is between 51nm and 70nm. The glass with low chromatic aberration and low scattering according to Claim 1, wherein the L* value of the light-shielding layer is less than 0.5, the a* value is between 0±0.05, and the b* value is between 0±0.05. The glass with low chromatic aberration and low scattering according to claim 2, wherein the L* value is less than 0.2. The glass with low chromatic aberration and low scattering according to claim 1, wherein the components of the light-shielding layer further include acrylic resin, solvent, filler, defoamer and leveling agent. The glass with low chromatic aberration and low scattering according to claim 4, wherein the solvent includes isophorone and isopropanol; the filler includes barium sulfate and calcium carbonate; the defoamer is non-silicon type defoamer agent. The glass with low chromatic aberration and low scattering as described in Claim 5, wherein the content of the acrylic resin is 50% to 65% by weight, the content of the carbon black is 10 to 15% by weight, and the isophorone The content of the isopropanol is 10% by weight to 15% by weight, the content of the isopropanol is 2% by weight to 3% by weight, the content of the barium sulfate is 5% by weight to 10% by weight, the content of the calcium carbonate is 5% by weight % by weight to 10% by weight, the content of the non-silicon type defoamer is 1% by weight to 2% by weight, and the content of the leveling agent is 1% by weight to 3% by weight. The glass with low chromatic aberration and low scattering according to any one of claims 1 to 6, wherein the glass substrate has a first surface and an opposite second surface, and the light-shielding layer is provided on the second surface. The periphery of the surface; the first surface is provided with an antireflection layer, and the antireflection layer is different from the first surface provided with an antifouling layer. The glass with low chromatic aberration and low scattering according to claim 7, wherein the light-shielding layer is formed on the periphery of the second surface by screen printing, spraying, or transfer printing. The glass with low chromatic aberration and low scattering as described in Claim 8, wherein L* value, a* value, b* value and Y value are measured by using D65 light source and 10° viewing angle.

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