Glass light guide plate formula and preparation method thereof

Abstract

The invention belongs to the technical field of optical materials, and particularly relates to a glass light guide plate formula, which is prepared from the following raw materials in parts by weight: 65 to 73.5 parts by weight of SiO2, 9.5 to 14.5 parts by weight of Na2O, 7.3 to 9.7 parts by weight of CaO, 2.0 to 4.5 parts by weight of MgO, 0.6 to 3.0 parts by weight of AL2O3, 0.10 to 0.30 part by weight of SB2O3 and less than 0.0090 part by weight of Fe2O3. The preparation method comprises the following steps: step 1, weighing the raw materials in parts by weight, and uniformly mixing the raw materials in a glass mixer; 2, melting the mixed raw materials at the temperature of 1500-1600 DEG C, and then carrying out compression molding; and 3, finally, annealing the formed glass, and then slowly cooling to obtain the glass light guide plate. The glass light guide plate disclosed by the invention has the characteristics of better mechanical strength, chemical stability and low expansion rate, so that the glass light guide plate can be widely applied to the fields requiring the characteristics, and preferably can be used as a light guide plate of an LCD (Liquid Crystal Display).

Description

Technical Field

[0001] The present invention relates to the technical field of optical materials, and particularly to a glass light guide plate formula and a preparation method thereof. Background Art

[0002] The light guide plate is a key component in the backlight module and is widely used in fields such as liquid crystal displays (LCDs) and lighting devices. Traditional light guide plates mostly use organic materials such as polymethyl methacrylate (PMMA) or polycarbonate (PC), but these materials have problems such as poor heat resistance, easy aging, and insufficient mechanical strength. Glass materials have gradually become an ideal alternative material for light guide plates due to their high light transmittance, excellent heat resistance, and chemical stability.

[0003] However, the existing raw materials for glass light guide plates have insufficient light transmittance and high manufacturing costs, which affect the uniformity and market application of glass light guide plates. Summary of the Invention

[0004] 1. Technical Problems to be Solved

[0005] The purpose of the present invention is to solve the problem of high manufacturing cost of glass light guide plates in the prior art, and to propose a glass light guide plate formula and a preparation method thereof.

[0006] 2. Technical Solutions

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A glass light guide plate formula includes the following raw materials in parts by weight: 65 - 73.5 parts by weight of SiO2, 9.5 - 14.5 parts by weight of Na2O, 7.3 - 9.7 parts by weight of CaO, 2.0 - 4.5 parts by weight of MgO, 0.6 - 3.0 parts by weight of AL2O3, 0.10 - 0.30 parts by weight of SB2O3, and < 0.0090 parts by weight of Fe2O3.

[0009] Preferably, it includes the following raw materials in parts by weight: 65 - 73.5 parts by weight of SiO2, 9.5 - 14.5 parts by weight of Na2O, 7.3 - 9.7 parts by weight of CaO, 2.0 - 4.5 parts by weight of MgO, 0.6 - 3.0 parts by weight of AL2O3, 0.10 - 0.30 parts by weight of SB2O3, and < 0.0090 parts by weight of Fe2O3.

[0010] Preferably, it includes the following raw materials in parts by weight: 65 - 73.5 parts by weight of SiO2, 9.5 - 14.5 parts by weight of Na2O, 7.3 - 9.7 parts by weight of CaO, 2.0 - 4.5 parts by weight of MgO, 0.6 - 3.0 parts by weight of AL2O3, 0.10 - 0.30 parts by weight of SB2O3, and < 0.0090 parts by weight of Fe2O3.

[0011] Preferably, it comprises raw materials in the following parts by weight: 65 - 73.5 parts by weight of SiO2, 9.5 - 14.5 parts by weight of Na2O, 7.3 - 9.7 parts by weight of CaO, 2.0 - 4.5 parts by weight of MgO, 0.6 - 3.0 parts by weight of AL2O3, 0.10 - 0.30 parts by weight of SB2O3, and < 0.0090 parts by weight of Fe2O3.

[0012] Preferably, it further contains 0.15 - 0.25 parts by weight of SO3 and 0.10 - 0.30 parts by weight of SB2O3 as clarifying agents.

[0013] For the glass plate prepared with the glass light guide plate formula proposed in the present invention, the light transmittance of the glass plate with a thickness of 2 mm is above 92.3%.

[0014] The present invention provides a method for preparing a glass light guide plate, which includes the following steps:

[0015] Step 1: Weigh each raw material according to the above parts by weight and mix them evenly in a glass mixer;

[0016] Step 2: Then melt the mixed raw materials at 1500°C - 1600°C, and then press and form them through a glass press;

[0017] Step 3: Finally, anneal the formed glass at an annealing temperature of 400°C - 600°C, and then slowly cool it to obtain the glass light guide plate.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the advantages of the present invention are as follows:

[0020] (1) In the present invention, compared with the organic light guide plate in the traditional technology, the shape of the light guide plate is not easily deformed, and it will not turn yellow and does not produce harmful volatile organic compounds under long-term high temperature.

[0021] (2) In the present invention, according to the glass characteristics, it has good mechanical strength, chemical stability and low expansion rate, and the expansion rate relative to external temperature changes is small, and almost no deformation occurs. Through the toughening means, even if the thickness is thin, the mechanical and physical properties can be stably ensured.

[0022] (3) In the present invention, the light transmittance of the glass raw material for light (380 nm to 1100 nm) is above 92.3%, which can significantly improve the light efficiency of the light guide plate and the preparation cost is low. The glass light guide plate has the characteristics of good mechanical strength, chemical stability and low expansion rate. Therefore, the glass light guide plate can be widely used in fields that require these characteristics, and preferably can be used as the light guide plate of LCD. Brief Description of the Drawings

[0023] Figure 1 This is a flowchart for the preparation of a glass light guide plate proposed in the present invention. Detailed Embodiments

[0024] Hereinafter, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Embodiment 1:

[0026] A glass light guide plate formulation includes the following raw materials in parts by weight: 65 - 73.5 parts by weight of SiO2, 9.5 - 14.5 parts by weight of Na2O, 7.3 - 9.7 parts by weight of CaO, 2.0 - 4.5 parts by weight of MgO, 0.6 - 3.0 parts by weight of AL2O3, 0.10 - 0.30 parts by weight of SB2O3, and < 0.0090 parts by weight of Fe2O3. It also contains 0.15 - 0.25 parts by weight of SO3 and 0.10 - 0.30 parts by weight of SB2O3 as clarifying agents.

[0027] In this embodiment, for the glass plate prepared from the glass light guide plate formulation, the light transmittance of the glass plate with a thickness of 2 mm is above 92.3%.

[0028] In this embodiment, referring to Figure 1 , a method for preparing a glass light guide plate includes the following steps:

[0029] Step 1: Weigh each raw material according to the above parts by weight and mix them evenly in a glass mixer;

[0030] Step 2: Then melt the mixed raw materials at 1500°C - 1600°C, and then press and form them through a glass press;

[0031] Step 3: Finally, perform annealing treatment on the formed glass. The annealing temperature is 400°C - 600°C, and then slowly cool it to obtain a glass light guide plate.

[0032] In this embodiment, compared with the organic light guide plate of the traditional technology, the shape of the light guide plate prepared from the glass is not easily deformed, and it will not turn yellow and produce harmful volatile organic compounds under long-term high temperature.

[0033] In this embodiment, according to the glass characteristics, it has good mechanical strength, chemical stability, and a low expansion rate. The expansion rate with respect to external temperature changes is small, and almost no deformation occurs. Through the toughening means, even with a thin thickness, the mechanical and physical properties can be stably ensured.

[0034] In this embodiment, the light transmittance of the glass raw material for light (380 nm to 1100 nm) is above 92.3%, which can significantly improve the light efficiency of the light guide plate and the preparation cost is relatively low.

[0035] In this embodiment, the glass light guide plate has the characteristics of good mechanical strength, chemical stability and low expansion rate. Therefore, the glass light guide plate can be widely used in fields that require these characteristics, and preferably can be used as the light guide plate of an LCD.

[0036] Embodiment 2:

[0037] It has the implementation content of the above embodiment. For the specific implementation manners of the above embodiment, reference can be made to the above description, and the embodiments here will not be repeated in detail; in the embodiment of the present application, the difference from the above embodiment is that:

[0038] In this embodiment, a glass light guide plate formula includes the following raw materials in parts by weight: 65 - 73.5 parts by weight of SiO2, 9.5 - 14.5 parts by weight of Na2O, 7.3 - 9.7 parts by weight of CaO, 2.0 - 4.5 parts by weight of MgO, 0.6 - 3.0 parts by weight of AL2O3, 0.10 - 0.30 parts by weight of SB2O3, and Fe2O3 < 0.0090 parts by weight.

[0039] Embodiment 3:

[0040] It has the implementation content of the above embodiment. For the specific implementation manners of the above embodiment, reference can be made to the above description, and the embodiments here will not be repeated in detail; in the embodiment of the present application, the difference from the above embodiment is that:

[0041] In this embodiment, a glass light guide plate formula includes the following raw materials in parts by weight: 65 - 73.5 parts by weight of SiO2, 9.5 - 14.5 parts by weight of Na2O, 7.3 - 9.7 parts by weight of CaO, 2.0 - 4.5 parts by weight of MgO, 0.6 - 3.0 parts by weight of AL2O3, 0.10 - 0.30 parts by weight of SB2O3, and Fe2O3 < 0.0090 parts by weight.

[0042] Embodiment 4:

[0043] It has the implementation content of the above embodiment. For the specific implementation manners of the above embodiment, reference can be made to the above description, and the embodiments here will not be repeated in detail; in the embodiment of the present application, the difference from the above embodiment is that:

[0044] In this embodiment, a glass light guide plate formula includes the following raw materials in parts by weight: 65 - 73.5 parts by weight of SiO2, 9.5 - 14.5 parts by weight of Na2O, 7.3 - 9.7 parts by weight of CaO, 2.0 - 4.5 parts by weight of MgO, 0.6 - 3.0 parts by weight of AL2O3, 0.10 - 0.30 parts by weight of SB2O3, and < 0.0090 parts by weight of Fe2O3.

[0045] As mentioned above, the above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent replacements or changes, should be covered by the protection scope of the present invention.

Claims

1. A glass light guide plate formula, characterized in that, It comprises the following raw materials in parts by weight: 65 - 73.5 parts by weight of SiO2, 9.5 - 14.5 parts by weight of Na2O, 7.3 - 9.7 parts by weight of CaO, 2.0 - 4.5 parts by weight of MgO, 0.6 - 3.0 parts by weight of AL2O3, 0.10 - 0.30 parts by weight of SB2O3, and < 0.0090 parts by weight of Fe2O3.

2. The glass light guide plate formulation according to claim 1, characterized in that, It comprises the following raw materials in parts by weight: 65 - 73.5 parts by weight of SiO2, 9.5 - 14.5 parts by weight of Na2O, 7.3 - 9.7 parts by weight of CaO, 2.0 - 4.5 parts by weight of MgO, 0.6 - 3.0 parts by weight of AL2O3, 0.10 - 0.30 parts by weight of SB2O3, and < 0.0090 parts by weight of Fe2O3.

3. A glass light guide plate formulation according to claim 1, characterized in that, It comprises the following raw materials in parts by weight: 65 - 73.5 parts by weight of SiO2, 9.5 - 14.5 parts by weight of Na2O, 7.3 - 9.7 parts by weight of CaO, 2.0 - 4.5 parts by weight of MgO, 0.6 - 3.0 parts by weight of AL2O3, 0.10 - 0.30 parts by weight of SB2O3, and < 0.0090 parts by weight of Fe2O3.

4. A glass light guide plate formulation according to claim 1, characterized in that, It comprises the following raw materials in parts by weight: 65 - 73.5 parts by weight of SiO2, 9.5 - 14.5 parts by weight of Na2O, 7.3 - 9.7 parts by weight of CaO, 2.0 - 4.5 parts by weight of MgO, 0.6 - 3.0 parts by weight of AL2O3, 0.10 - 0.30 parts by weight of SB2O3, and < 0.0090 parts by weight of Fe2O3.

5. A glass light guide plate formulation according to claim 1, characterized in that, It also contains 0.15 - 0.25 parts by weight of SO3 and 0.10 - 0.30 parts by weight of SB2O3 as clarifying agents.

6. The glass plate prepared according to the glass light guide plate formula described in any one of claims 1-5, characterized in that, The light transmittance of a glass plate with a thickness of 2 mm is above 92.3%.

7. A method for preparing a glass light guide plate according to any one of claims 1-5, characterized in that, It comprises the following steps: Step 1: Weigh each raw material according to the above parts by weight and mix them evenly in a glass mixer; Step 2: Then melt the mixed raw materials at 1500°C - 1600°C, and then press and form them through a glass press; Step 3: Finally, anneal the formed glass at an annealing temperature of 400°C - 600°C, and then slowly cool it to obtain a glass light guide plate.

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