Method for manufacturing glass diffuser plate surface integrated polarized light

Abstract

The application belongs to the technical field of glass diffusion plates, and particularly relates to a manufacturing method of a glass diffusion plate surface integrated polarized light, which comprises the following steps: step one: cutting glass to form a glass substrate; step two: cleaning the glass substrate, and performing ultrapure water cleaning on the glass substrate to ensure the cleanliness of the upper surface of the glass; and step three: coating, adopting a continuous magnetron sputtering coating method to coat a plurality of nanometer silicon oxide layers on the glass substrate to form a linear polarization layer on the surface of the glass substrate. The thickness of the single nanometer silicon oxide layer is 75-85 nanometers, and the coating frequency is 800-850 times. The manufacturing method of the glass diffusion plate surface integrated polarized light has the effect of improving the brightness of an LCD display by coating a coating layer with a polarization function on the light-emitting surface of the glass diffusion plate, so that most of the non-polarized light emitted by the backlight module is converted into polarized light, and the light loss caused when the light passes through the liquid crystal screen polarizer is reduced.

Description

Technical Field

[0001] This invention belongs to the field of glass diffuser technology, specifically relating to a method for fabricating a glass diffuser surface with integrated polarized light. Background Technology

[0002] In LCD display products, the light emitted by the LED beads in the backlight module is transformed from a point light source into a uniformly emitting surface light source through a light homogenizing component. However, this light source is unpolarized light, while the LCD screen can only use polarized light for imaging. Therefore, upper and lower polarizers need to be attached to the upper and lower surfaces of the LCD screen.

[0003] When the unpolarized light from the backlight module passes through the polarizer, it is converted into polarized light. However, when the unpolarized light is converted into polarized light, a significant amount of light is lost, resulting in a substantial decrease in brightness. Summary of the Invention

[0004] The purpose of this invention is to provide a method for manufacturing a glass diffuser plate with integrated polarized light, in order to solve the technical problem that when unpolarized light is converted into polarized light, there is a significant loss of light, resulting in a large decrease in brightness. By coating the light-emitting surface of the glass diffuser plate with a polarizing coating, most of the unpolarized light emitted from the backlight module is converted into polarized light, reducing the light loss generated when light passes through the polarizer of the LCD screen, thereby improving the brightness of the LCD display.

[0005] To address the aforementioned technical problems, this invention provides a method for fabricating polarized light integrated on the surface of a glass diffuser, comprising the following steps:

[0006] Step 1: Cut the glass to form a glass substrate;

[0007] Step 2: Clean the glass substrate. Use ultrapure water to clean the glass substrate to ensure the cleanliness of the glass surface.

[0008] Step 3: Coating. A continuous magnetron sputtering coating method is used to coat multiple layers of nano-silicon oxide on the glass substrate, forming a linear polarizing layer on the surface of the glass substrate.

[0009] Furthermore, the thickness of the single-layer nano-silicon oxide layer is 75-85 nanometers, the number of depositions is 800-850, and the thickness of the linear polarizing layer is 60-70 μm.

[0010] Furthermore, it also includes: Step 4: An acrylic coating is applied to the linear polarizing layer, and the thickness of the acrylic coating is 10-15 μm.

[0011] Furthermore, a diffusion coating is provided on the side of the glass substrate away from the multilayer film, and the diffusion coating is applied after step one.

[0012] Furthermore, in step two, after cleaning, the surface tension and water contact angle of the upper surface of the glass substrate are tested. The surface dyne value of the glass substrate is above 40, and the water contact angle is within 30 degrees.

[0013] Furthermore, the surface flatness of the glass substrate is 10-15 nm.

[0014] Furthermore, the glass substrate is made of 0.5-1.1 mm of medium-aluminum or high-aluminum glass.

[0015] The beneficial effects of this invention are:

[0016] 1. By coating the light-emitting surface of the glass diffuser with a linear polarizing layer that has a polarizing effect, most of the unpolarized light emitted by the backlight module is converted into polarized light, reducing light loss when light passes through the polarizer of the LCD screen, thereby improving the brightness of the LCD display.

[0017] 2. The acrylic coating serves to protect the linear polarizing layer and also has a fogging and diffusion effect.

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the method for fabricating integrated polarized light on the surface of a glass diffuser plate according to the present invention.

[0021] In the picture:

[0022] 1. Glass substrate;

[0023] 2. Nano-silicon oxide layer;

[0024] 3. Linear polarizing layer;

[0025] 4. Acrylic coating;

[0026] 5. Diffusion coating. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example:

[0029] like Figure 1 As shown, a method for fabricating polarized light integrated on the surface of a glass diffuser plate includes the following steps:

[0030] Step 1: Cut the glass to form glass substrate 1. Glass substrate 1 is made of 0.5-1.1 mm medium or high alumina glass, and the surface flatness of glass substrate 1 is 10-15 nm. A diffusion coating 5 is provided on the side of glass substrate 1 away from the multilayer film, so that glass substrate 1 has a diffusion effect and realizes the light uniformity function of conventional diffusion plates.

[0031] Step 2: Clean the glass substrate 1. Clean the glass substrate 1 with ultrapure water to ensure the cleanliness of the upper surface of the glass. After cleaning, test the surface tension and water contact angle of the upper surface of the glass substrate 1. The surface dyne value of the glass substrate 1 is above 40 and the water contact angle is within 30 degrees.

[0032] Step 3: Coating. A multilayer nano-silicon oxide layer 2 is deposited on the glass substrate 1 using a continuous magnetron sputtering method to form a linear polarizing layer 3 on the surface of the glass substrate 1. The thickness of a single nano-silicon oxide layer 2 is 75-85 nanometers, and the number of deposition cycles is 800-850. The thickness of the linear polarizing layer 3 is 60-70 μm.

[0033] The linear polarizing layer 3 has the function of converting unpolarized light into polarized light. The linear polarizing layer 3 is made of high-transmittance nano-silicon oxide material. The film surface of the film material after multiple magnetron sputtering has a polarization effect.

[0034] Step 4: An acrylic coating 4 is coated on the linear polarizing layer 3, and the thickness of the acrylic coating 4 is 10-15μm.

[0035] In summary, by coating the light-emitting surface of the glass diffuser with a linear polarizing layer 3, most of the unpolarized light emitted from the backlight module is converted into polarized light, reducing light loss when light passes through the polarizer of the LCD screen and thus improving the brightness of the LCD display. The acrylic coating 4 protects the linear polarizing layer 3 and also provides a fogging and diffusion effect.

[0036] Example:

[0037] like Figure 1 As shown, a method for manufacturing a glass diffuser plate with integrated polarized light is described. 1.1t of high-alumina glass raw material is used to make a glass diffuser plate, which is then paired with a backlight module and a common brightness enhancement film. The backlight brightness is tested, and the overall brightness of the device is tested after covering the LCD screen.

[0038] Comparative Example 1

[0039] Take 1.1t of high-alumina glass raw material, apply a diffusion coating 5 only to the lower surface of the glass to make a conventional glass diffusion plate, and use it with the backlight module in the embodiment. The brightness enhancement film is selected as a DBEF optical film with polarization effect. Test its backlight brightness, and test its overall brightness after covering the LCD screen.

[0040] Comparative Example 2

[0041] Take 1.1t of high-alumina glass raw material, apply a diffusion coating 5 only to the lower surface of the glass to make a conventional glass diffusion plate, combine it with the backlight module and brightness enhancement film in the embodiment, test its backlight brightness, and test its overall brightness after covering the LCD screen.

[0042] Example 5380 507 Comparative Example 1 5315 521 Comparative Example 2 7689 453

[0043] Comparing the backlight brightness of the three, since the diffuser plate in the embodiment has a polarization structure composed of a linear polarization layer 3 on its upper surface, and the optical film in the comparative example has a polarization effect, it can directly convert the light emitted by the LED beads into polarized light. There is a certain light loss during the conversion process, so the backlight brightness of the two is lower than that of the unpolarized light in comparative example 2. However, after covering the LCD screen, since polarizers are set on both the upper and lower surfaces of the LCD, when the polarized light in the embodiment and comparative example 1 passes through the polarizers, the light loss is small, while when the unpolarized light in comparative example 2 passes through the polarizers, the light loss is large. The transmittance of the LCD screen is only about 6%, while the transmittance can be increased to more than 9% when polarized light passes through the LCD screen. Therefore, the overall brightness of the embodiment and comparative example 1 is higher than that of comparative example 2. However, the DBEF optical film in comparative example 1 is more expensive, and its manufacturing cost is higher than that of a glass diffuser plate with a polarization structure directly on the glass surface.

[0044] All the devices selected in this application are general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0045] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0046] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A method for fabricating polarized light integrated on the surface of a glass diffuser plate, characterized in that, Includes the following steps: Step 1: Cut the glass to form a glass substrate (1); Step 2: Clean the glass substrate (1). The glass substrate (1) is cleaned with ultrapure water to ensure the cleanliness of the glass surface. Step 3: Coating. A multilayer nano-silicon oxide layer (2) is deposited on the glass substrate (1) using a continuous magnetron sputtering coating method to form a linear polarizing layer (3) on the surface of the glass substrate (1). The thickness of the single-layer nano-silicon oxide layer (2) is 75-85 nanometers, and the number of coatings is 800-850 times; the thickness of the linear polarizing layer (3) is 60-70 μm. It also includes: Step 4: An acrylic coating (4) is coated on the linear polarizing layer (3), and the thickness of the acrylic coating (4) is 10-15 μm; A diffusion coating (5) is provided on the side of the glass substrate (1) away from the multilayer nano-silicon oxide layer (2), and the diffusion coating (5) is applied after step one; In step two, after cleaning, the surface tension and water contact angle of the upper surface of the glass substrate (1) are tested. The surface dyne value of the glass substrate (1) is above 40 and the water contact angle is within 30 degrees. The surface flatness of the glass substrate (1) is 10-15 nm; The glass substrate (1) is made of medium-aluminum or high-aluminum glass with a thickness of 0.5-1.1 mm.

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