Preparation method of glass substrate and display screen
By cutting, atomizing, edge grinding and polishing the glass substrate, the problems of large gaps and dark bands at the joints of the display screen are solved, achieving seamless splicing and better viewing effects.
Patent Information
- Application Number
- CN202410358288.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2025-09-30
AI Technical Summary
In the existing technology, commercial LCD screens have large gaps at the joints due to size limitations of processing equipment, and obvious dark bands appear when viewed from the side at 45°, affecting the tactile and sensory effects.
By cutting, atomizing, edge grinding and polishing the glass substrate, its side surface is set perpendicular to the light-emitting surface and the light-incident surface, and the haze is controlled at 25% to 35% to achieve seamless splicing and reduce dark band phenomenon.
It achieves seamless splicing between display screens, reduces dark band phenomenon, improves viewing effect and expands viewing angle.
Smart Images
Figure CN120717698A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of display devices, and in particular to a method for preparing a glass substrate and a display screen. Background Art
[0002] With the continuous integration and development of display technology and control technology, large-screen image displays formed by splicing have been widely used in high-end engineering fields. The ultra-large screen, multi-screen display and clear and realistic display effects it brings have greatly improved the work efficiency in monitoring, security, conferencing, simulation and other fields, and at the same time promoted the rapid advancement of the technical level of these industries.
[0003] Due to the size limitations of processing equipment, commercial LCD screens and glass can only be up to 110 inches. Larger sizes require splicing two or more screens, connected by a 40mm LED light panel. Current processing techniques for cover glass create large gaps at the joints, and noticeable dark bands appear when viewed from the side at 45°. This not only fragments the image on the large screen, but can also be easily misinterpreted as part of the image, impacting tactile and visual quality. Summary of the Invention
[0004] The embodiments of the present application provide a method for preparing a glass substrate and a display screen, which can achieve seamless splicing between display screens.
[0005] In a first aspect, an embodiment of the present application provides a method for preparing a display glass substrate, the method comprising the following steps:
[0006] Cutting step: Cutting the glass raw material into a glass substrate of a specified size, wherein the glass substrate has a light incident surface, a light emitting surface opposite to the light incident surface, and a side surface located between the light incident surface and the light emitting surface, and the side surface is arranged perpendicular to the light incident surface and the light emitting surface;
[0007] Atomizing step: atomizing the light-emitting surface and making the haze of the light-emitting surface 25% to 35%;
[0008] Edging step: perform edging treatment on the side surface;
[0009] Polishing step: Polish the side surface after edge grinding to improve the light transmittance of the side surface.
[0010] In some embodiments, the atomizing step includes etching the light emitting surface, and the etching process includes: shielding the light incident surface and side surfaces of the glass substrate; and etching the unshielded light emitting surface of the glass substrate for 30 to 35 minutes.
[0011] In some embodiments, masking includes printing ink on the light incident surface and the side surfaces.
[0012] In some embodiments, etching includes a pickling process, a frosting process, and a polishing process performed in sequence; the glass substrate is treated with a first pickling liquid during the pickling process, the glass substrate is treated with a frosting liquid during the frosting process, and the glass substrate is treated with a second pickling liquid during the polishing process.
[0013] In some embodiments, the polishing step includes polishing the side surface of the glass substrate using a 600-800 grit BD wheel for 5-10 minutes to allow light to pass directly through the side surface.
[0014] In some embodiments, in the polishing step, the rotation speed of the BD wheel is 2500-3500 r / min, and the polishing linear speed is 10-30 mm / s.
[0015] In some embodiments, after the polishing step, a tempering step is further included, wherein the tempering step includes: heating the glass substrate to a temperature close to the softening temperature of the glass, and then uniformly cooling the glass substrate to room temperature using high-pressure cold air.
[0016] In some embodiments, after the polishing step, a tempering step is further included, and the tempering step includes: soaking the glass substrate in a potassium salt solution for 60 to 75 minutes.
[0017] In some embodiments, after the tempering step, a printing step is further included, in which ink is printed onto the light incident surface and / or the light exiting surface using a silk screen printing process.
[0018] In the second aspect, an embodiment of the present application provides a display screen, which includes multiple spliced screens and LED light strips, and the two side edges of the LED light strips are respectively connected to at least two spliced screens; wherein, the spliced screens include a display panel, a backlight module and a glass substrate, the glass substrate has a light incident surface, a light emitting surface opposite to the light incident surface, and a side surface located between the light incident surface and the light emitting surface, and the side surface is arranged perpendicular to the light incident surface and the light emitting surface, the glass substrate is attached to the side of the display panel facing away from the backlight module, and the side surface of the glass substrate is seamlessly spliced with the side edge of the LED light strip.
[0019] In some embodiments, the side surface is a polished bright surface.
[0020] According to the method for preparing a display glass substrate according to an embodiment of the present application, the processing steps of the glass substrate are cutting, atomizing, edging, and polishing. The cutting step can ensure that the side surface of the glass substrate is perpendicular to both the light-emitting and light-incident surfaces, thereby eliminating the installation gap between the side surfaces during splicing, improving splicing tightness, and reducing the dark banding effect observed by users when viewing the display from the side due to the installation gap, thereby achieving a seamless splicing effect. The atomizing step can adjust the haze of the glass substrate to 25% to 35%. When the LED light and external ambient light reach the glass substrate surface, the degree of diffuse reflection is greater, resulting in more dispersed light at the glass substrate splicing point, making it less likely for users to see the dark band at the glass substrate splicing point from the glass substrate surface. Furthermore, the polishing step can eliminate the haze formed on the side surface of the glass substrate after the edging process, allowing light to pass directly through the side surface of the glass substrate, preventing the user from seeing the haze on the side surface of the glass substrate when viewing the display from a side angle of more than 45°, thereby reducing the dark banding phenomenon and improving the viewing experience. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.
[0022] Figure 1 It is a structural diagram of an embodiment of a display screen in the prior art;
[0023] Figure 2 This is a structural diagram of an embodiment of splicing a glass substrate of a display screen and an LED light strip of the present application;
[0024] Figure 3 for Figure 2 Schematic diagram of the process for preparing a display glass substrate shown in FIG.
[0025] Description of Figure Numbers:
[0026] 1. Display screen; 10. Spliced screen; 20. LED light strip; 30. Glass substrate; 31. Light incident surface; 32. Light exit surface; 33. Side surface; 40. Display panel; 50. Backlight module.
[0027] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical solutions and advantages of this application clearer, the following part will further describe the embodiments of this application in detail with reference to the accompanying drawings.
[0029] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application, as detailed in the appended claims.
[0030] In the description of this application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, in the description of this application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship.
[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.
[0032] With the continuous integration and development of display technology and control technology, large-screen image displays formed by splicing have been widely used in high-end engineering fields. The ultra-large screen, multi-screen display and clear and realistic display effects it brings have greatly improved the work efficiency in monitoring, security, conferencing, simulation and other fields, and at the same time promoted the rapid advancement of the technical level of these industries.
[0033] In recent years, with the advancement of software and hardware, seamless splicing technology has matured and has been widely applied in command and control, virtual simulation training, industrial manufacturing design, scientific research, and complex decision-making processes. Its application in exhibitions, visual entertainment, advertising, and other fields is also becoming increasingly prevalent. A splicing screen is a complete LCD display unit that can be used as a standalone monitor or spliced together to create an ultra-large screen. Depending on the needs, the screen can be expanded or reduced in a variety of ways: split display, standalone display, any combination of displays, full-screen LCD splicing, and vertical display.
[0034] Due to the size limitations of processing equipment, commercial LCD screens and glass can only be up to 110 inches. Larger sizes require splicing two or more screens, connected by a 40mm LED light panel. Current processing techniques for cover glass create large gaps at the joints, and noticeable dark bands appear when viewed from the side at 45°. This not only fragments the image on the large screen, but can also be easily misinterpreted as part of the image, impacting tactile and visual quality.
[0035] To resolve the above issues, please refer to Figures 1 to 3 The present application proposes a display screen 1. In an embodiment of the present application, the display screen 1 includes a splicing screen 10 and an LED light strip 20. The splicing screen 10 is provided with at least two LED light strips 20. The LED light strips 20 are arranged in the gap between two adjacent splicing screens 10, and the two side edges of the LED light strip 20 are seamlessly connected to the two splicing screens 10 respectively.
[0036] Specifically, the spliced screen 10 includes a display panel 40, a backlight module 50 and a glass substrate 30. The glass substrate 30 is attached to the side of the display panel 40 facing away from the backlight module 50, and the side surface 33 of the glass substrate 30 is seamlessly spliced with the side of the LED light strip 20.
[0037] The glass substrate 30 includes a light incident surface 31 facing the display panel 40, a light emitting surface 32 facing away from the display panel 40, and a side surface 33 disposed between the light incident surface 31 and the light emitting surface 32. In the present application, the side surface 33 of the glass substrate 30 is perpendicular to both the light emitting surface 32 and the light incident surface 31. During the splicing process, the side surface 33 is aligned with the edge of the LED light strip 20, while the light emitting surface 32 of the glass substrate 30 is flush with the light emitting surface 32 of the LED light strip 20.
[0038] In this embodiment, the side surface 33 of the glass substrate 30 is perpendicular to both the light-emitting surface 32 and the light-entering surface 31, and no chamfers are provided between the side surface 33 of the glass substrate 30 and either the light-emitting surface 32 or the light-entering surface 31. Thus, after the side surface 33 of the glass substrate 30 is bonded to the edge of the LED light strip 20, there is no noticeable gap or concave structure between the glass substrate 30 and the LED light strip 20. Compared to designs other than those in which chamfers are provided between the side surface 33 of the glass substrate 30 and the light-emitting surface 32 or the light-entering surface 31, because the side surface 33 of the glass substrate 30 in this embodiment is a relatively complete straight surface, even with slight assembly errors, the overall structure after assembly can be considered to be seamless, resulting in a tighter connection between the glass substrate 30 and the LED light strip 20. Thus, during use, the image transition at the joint between the spliced screen 10 and the LED light strip 20 is natural, further expanding the viewing angle and achieving truly wide-angle seamless splicing.
[0039] Furthermore, the present application further sets the haze of the light-emitting surface 32 of the glass substrate 30 to 25% to 35%. Haze is a cloudy state caused by light scattering within or on the surface of the glass substrate 30, i.e., the ratio of scattered transmitted light to total transmitted light, determined by the scattered light flux. When the haze is between 25% and 35%, when light from the LED light strip 20 and ambient light reaches the light-emitting surface 32 of the glass substrate 30, diffuse reflection occurs to a greater degree, thereby further dispersing the light at the junction of the glass substrate 30 and the LED light strip 20. This makes it less likely that users will see the dark band at the junction of the glass substrate 30 and the LED light strip 20, thereby further improving the viewing experience. When the haze is less than 25%, the diffuse reflection is reduced, making the dark band easier to see. When the haze is greater than 35%, the surface transmittance of the glass substrate 30 is further reduced, resulting in reduced clarity of the overall image content on the display screen 1 and poor viewing quality.
[0040] In some embodiments, a method for preparing the glass substrate 30 of the display screen 1 includes the following steps:
[0041] Cutting step: First, prepare a glass raw material. Consider using a known method such as a down-draw method to cut the glass raw material into a glass substrate 30 of a specified size. The glass substrate 30 has a light incident surface 31, a light emitting surface 32 opposite to the light incident surface 31, and a side surface 33 located between the light incident surface 31 and the light emitting surface 32. The side surface 33 is perpendicular to both the light incident surface 31 and the light emitting surface 32. The prepared glass raw material may contain, in addition to SiO2, an essential component for forming the glass skeleton, one or more alkali metal components, such as Na2O and Li2O. Aluminosilicate glass, for example, may be selected as the glass raw material containing such components.
[0042] The glass raw materials are cut into glass substrates 30 of specified sizes by a semi-automatic cutting machine or a fully automatic cutting machine. The glass substrates 30 are repeatedly cleaned in an ultrasonic cleaning machine to remove particle impurity contamination and ion contamination, and then placed in a dryer for drying.
[0043] Atomizing step: Atomizing the glass substrate 30 dried in the cutting step can reduce light reflection on its surface, thereby reducing ambient light interference. The atomizing step includes etching the light-emitting surface 32 of the glass substrate 30.
[0044] The etching process includes: shielding the light incident surface 31 and the side surface 33 of the glass substrate 30 , and etching the unshielded light emitting surface 32 of the glass substrate 30 for 30 to 35 minutes.
[0045] Specifically, masking involves masking the light incident surface 31 and side surface 33 using printing ink or other methods. Etching involves sequentially performing pickling, frosting, and polishing processes. During the pickling process, the glass substrate 30 is treated with a first pickling solution. During the frosting process, the glass substrate 30 is treated with a frosting solution, i.e., the masked glass substrate 30 is immersed in the frosting solution for 1-2 minutes before being removed. During the polishing process, the glass substrate 30 is treated with a second pickling solution. Following etching, the glass substrate 30 is cleaned in a cleaning machine, removed from the cleaning machine, and dried in a dryer.
[0046] Edge grinding step: performing edge grinding on the side surface 33 of the glass substrate 30 dried in the atomizing step, and then cleaning and drying the glass substrate 30 after edge grinding.
[0047] Polishing step: polishing the side surface 33 of the glass substrate 30 dried in the edge grinding step to improve the light transmittance of the side surface 33. After the polishing, the glass substrate 30 is cleaned and dried.
[0048] Tempering step: The glass substrate 30 dried in the polishing step is subjected to a tempering treatment to improve the strength of the glass substrate 30 . After the tempering treatment, the glass substrate 30 is cleaned and dried.
[0049] Printing step: The glass substrate 30 dried in the tempering step is subjected to printing. The printing step is to use a silk screen printing process to print ink on the light incident surface 31 and the light emitting surface 32, or to print on either the light incident surface 31 or the light emitting surface 32.
[0050] In the related prior art, such as Figure 1As shown in FIG. 1 , due to the chamfered side surface 33 of the glass substrate 30, there is a gap at the connection with the LED light strip 20. When viewed from the front, the gap will have a visual effect of 0.3 mm. When viewed from the side, there will be a dark band with the thickness of the glass substrate 30. Therefore, according to the cutting step of the preparation method of the glass substrate 30 of the display screen 1 in the embodiment of the present application, as shown in FIG. Figure 2 As shown, the side surface 33 of the glass substrate 30 is not chamfered, that is, the side surface 33 of the glass substrate 30 is arranged perpendicular to the light emitting surface 32 and the light incident surface 31. This can eliminate the above-mentioned gap, thereby reducing the influence of the dark band phenomenon on the viewing effect, and can also make the connection between the glass substrate 30 and the LED light strip 20 tighter, achieving a seamless splicing effect between the two, and the image transition at the splicing of the splicing screen 10 and the LED light strip 20 is natural, further expanding the viewing angle, thereby achieving a truly wide-angle seamless splicing viewing.
[0051] In some embodiments, etching roughens the surface of the glass through the reaction of hydrofluoric acid with the glass, converting most of the specular reflection on the glass surface into diffuse reflection, thereby creating a haze effect. In the etching step of the present application, the pickling process can not only further clean the oil stains and the like on the glass substrate 30; when the first pickling solution contains hydrofluoric acid, the pickling process can also pre-etch the glass substrate 30 to a certain extent. Since the first pickling solution is not as complex as the raw material composition in the frosting solution, its initial etching effect on the glass substrate 30 is more uniform, which is beneficial to the subsequent frosting process. The concentration of hydrofluoric acid in the first pickling solution should not be too high, and 1%-2% is appropriate. A first pickling solution with an appropriate hydrofluoric acid concentration can form a uniform pre-etching effect, so that the frosting solution is more efficient in etching the glass substrate 30 during the subsequent frosting process. It should be noted that when the concentration of hydrofluoric acid in the first pickling solution is too high, the unevenness of the pre-etching of the glass substrate 30 during the pickling process will increase, and the degree of pre-etching will also increase unnecessarily; when the concentration of hydrofluoric acid in the first pickling solution is too low, the pre-etching effect on the glass substrate 30 is poor.
[0052] During the frosting process, the frosting liquid contains fluoride, acid, water, and corundum. The fluoride is at least one of ammonium fluoride, potassium bifluoride, and calcium fluoride, and the acid is at least one of hydrochloric acid and sulfuric acid. The fluoride and acid form a functional component (hydrofluoric acid) that corrodes the glass substrate 30. During the process of corroding the glass substrate 30, the hydrofluoric acid produces sticky silica. The corundum is not corroded by the hydrofluoric acid and adheres to the surface of the glass substrate 30 through the silica. The areas of the glass substrate 30 shielded by the corundum remain uncorroded, while areas not shielded by the corundum are corroded. This quickly creates an uneven surface on the surface of the glass substrate 30, achieving an atomization effect and also providing an anti-glare effect. Compared to the traditional frosting process, which corrodes the surface of the glass substrate 30 to be etched, thereby damaging the flatness of the surface, in this embodiment, 20 to 60% by mass of corundum is added to the frosting solution. The corundum provides a certain degree of shielding on the light-emitting surface 32 of the glass substrate 30 to be etched. This not only speeds up the generation of haze, but also requires less hydrofluoric acid to produce the haze. The above-mentioned corundum-assisted etching process can save 80% of the raw materials (fluoride and acid) used to etch the glass substrate 30. It is worth noting that the haze parameters of the glass substrate 30 after the frosting process can be conveniently adjusted by regulating the particle size of the corundum and the content of the corundum in the frosting solution.
[0053] During the flat polishing process, a second acid wash solution is used to both remove the corundum from the surface of the glass substrate 30 and polish the glass substrate 30. By controlling the flushing position, flow rate, and pH value of the second acid wash solution, the polishing depth, speed, and degree of polishing of the glass substrate 30 can be easily controlled during the flat polishing process. By controlling the time and intensity of the frosting and flat polishing processes, glass substrates 30 with varying haze, gloss, and distinctness of image parameters can be obtained.
[0054] In another embodiment, shielding the light incident surface 31 and side surface 33 of the glass substrate 30 can be accomplished by first coating at least one side of the glass substrate 30 with a resist film, which serves as an etching-resistant film. The resist film is then exposed to light through a photomask having a pattern corresponding to the desired external shape. The exposed resist film is then developed to form a resist pattern. The resulting resist pattern is then dried, leaving the resist film with the formed resist pattern as a mask, and etching is then performed on the light exiting surface 32 of the glass substrate 30.
[0055] It is understood that the resist material constituting the resist film may be any material as long as it is resistant to the etchant used when etching the glass substrate 30. Since wet etching using an aqueous solution containing hydrofluoric acid or dry etching using a fluorine-based gas is used for etching, the glass substrate 30 may be made of a resist material having excellent resistance to hydrofluoric acid, for example.
[0056] When etching the unshielded light-emitting surface 32 of the glass substrate 30 , a mixed acid containing at least one of sulfuric acid, nitric acid, hydrochloric acid, and fluorosilicic acid in hydrofluoric acid may be used as an etchant.
[0057] By processing the glass substrate 30 through etching, the microcracks that are inevitably formed when the light-emitting surface 32 of the glass substrate 30 is processed by mechanical processing are reduced, thereby having an extremely good surface state, and thereby achieving atomization of the light-emitting surface 32, so that the haze of the light-emitting surface 32 is 25% to 35%. In addition, since the resist pattern is formed by photolithography and then etched, the dimensional accuracy of the formed glass substrate 30 is also good, and a higher material strength can be obtained. By using this etching method for processing the shape, productivity can also be improved and processing costs can be reduced. It should be noted that the etching may not be wet etching as described above, but may be dry etching, for example, using a fluorine-based gas as an etchant.
[0058] Furthermore, the resist film can be formed by photolithography by applying a liquid or solid resist material, or by patterning the resist material by screen printing and then thermally curing it, or by attaching a sheet of resist material that has been previously cut or trimmed using a laser or the like. After the etching process, the resist film is stripped from the glass substrate 30 obtained by the etching method, and the glass substrate 30 is cleaned. As a stripping liquid for stripping the resist film from the glass substrate 30, an alkaline solution such as KOH or NaOH is preferably used. It should be noted that the types of resist material, etchant, and stripping liquid can be appropriately selected according to the constituent materials of the glass substrate 30 to be etched, and this application does not impose any restrictions on this.
[0059] It is understood that, in addition to photolithography, known methods such as printing, coating with a liquid curable resin, and sealing can also be used as a method for forming the resist film. Furthermore, when a sheet of resist material that has been previously cut or trimmed using a laser or the like is attached to the glass substrate 30 to form the resist film, the resist film can also be stripped using a stripping method such as ultraviolet stripping or thermal stripping, and this application does not impose any restrictions thereto.
[0060] In some embodiments, the edge grinding process in the edge grinding step can be performed using a glass linear edge grinder or a glass double edge grinder. This edge grinding process can remove sharp edges and corners caused by cutting the glass substrate 30, preventing injuries. It also eliminates small cracks and micro-cracks on the edges of the glass substrate 30 caused by cutting, thereby eliminating local stress concentration, increasing the strength of the glass substrate 30, and ensuring that the geometric shape and dimensional tolerances of the glass substrate 30 further meet assembly requirements.
[0061] In one embodiment, the polishing step involves polishing the side surface 33 of the glass substrate 30 using a 600-800 grit BD wheel for 5-10 minutes. The BD wheel is made from a special polymer material mixed with very sharp aluminum oxide and silicon carbide, resulting in excellent elasticity and polishing efficiency. The rotational speed during the polishing process is 2500-3500 rpm, and the polishing line speed is 10-30 mm / s. This eliminates the haze formed on the side surface 33 of the glass substrate 30 after the edging step, improves the light transmittance of the side surface 33, and allows light to pass directly through the side surface 33 of the glass substrate 30. This prevents the user from seeing the haze on the side surface 33 of the glass substrate 30 when viewing the display screen 1 at a side angle of more than 45°, thereby reducing the dark band phenomenon and improving the viewing experience.
[0062] In one embodiment, the tempering step may involve heating the glass substrate 30 to a temperature close to the softening temperature of the glass and then uniformly cooling it to room temperature using high-pressure cold air. The tempering process employed herein is physical tempering, which physically eliminates internal stress within the glass substrate 30 and thereby increases its strength.
[0063] In another embodiment, the tempering step may optionally employ chemical tempering, whereby the glass substrate 30 is immersed in a potassium salt solution, such as potassium nitrate, for 60-75 minutes. This potassium salt solution may be, for example, a potassium nitrate solution. This immersion in the potassium nitrate solution generates surface compressive stress in the glass substrate 30, thereby increasing its strength. Following the tempering process, the glass substrate 30 is removed from the nitrate solution and cleaned in a cleaning machine, followed by drying in a dryer.
[0064] In some embodiments, the ink used in the printing process during the printing step can be a strippable ink. The strippable ink contains epoxy resin, pigment, additives, and solvent. The additives include a hardener and a diluent. The hardener is an amine hardener and is selected from one or a mixture of two or three of diethylenetriamine (DETA), triethylenetetramine (TETA), and imidazole. The diluent is selected from one or a mixture of butyl glycidyl ether (BGE) and dibutyl phthalate (DBP). The solvent is selected from one or a mixture of butyl acetate and 3-methoxybutyl acetate, but this application does not limit this. The strippable ink comprises, by weight, 80% to 90% epoxy resin and 10% to 20% pigment, additive, and solvent. Epoxy resin is the primary component of the peelable ink, accounting for over 80%. After being applied to the glass substrate 30, the peelable ink gels. Pigments adjust the color of the peelable ink, while additives liquefy the epoxy resin and promote the effectiveness of the various components of the peelable ink. Solvents ensure a more even application of the peelable ink to the glass substrate 30 and accelerate drying.
[0065] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0066] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.
Claims
1. A method for preparing a glass substrate, characterized in that: The steps include: Cutting step: cutting the glass raw material into a glass substrate of a specified size, wherein the glass substrate has a light incident surface, a light emitting surface opposite to the light incident surface, and a side surface located between the light incident surface and the light emitting surface, and the side surface is arranged perpendicular to the light incident surface and the light emitting surface; Atomizing step: atomizing the light emitting surface so that the haze of the light emitting surface is 25% to 35%; Edge grinding step: performing edge grinding on the side surface; Polishing step: polishing the side surface after edge grinding to improve the light transmittance of the side surface.
2. The method for preparing a glass substrate according to claim 1, wherein: The atomizing step includes etching the light emitting surface, and the etching process includes: shielding the light incident surface and the side surface of the glass substrate; and The unshielded light-emitting surface of the glass substrate is etched for 30 to 35 minutes.
3. The method for preparing a glass substrate according to claim 2, wherein: The shielding includes printing ink on the light incident surface and the side surface.
4. The method for preparing a glass substrate according to claim 2, wherein: The etching process includes a pickling process, a frosting process and a flat polishing process performed in sequence; The glass substrate is treated with a first acid cleaning solution during the pickling process, the glass substrate is treated with a frosting solution during the frosting process, and the glass substrate is treated with a second acid cleaning solution during the flat polishing process.
5. The method for preparing a glass substrate according to claim 1, wherein: The polishing step includes: polishing the side surface of the glass substrate for 5 to 10 minutes using a 600-800 mesh BD wheel to allow light to directly pass through the side surface.
6. The method for preparing a glass substrate according to claim 5, wherein: In the polishing step, the rotation speed of the BD wheel is 2500-3500 r / min, and the polishing linear speed is 10-30 mm / s.
7. The method for preparing a glass substrate according to claim 1, wherein: After the polishing step, a tempering step is further included, and the tempering step includes: The glass substrate is heated to a temperature close to the softening temperature of the glass, and then uniformly cooled to room temperature using high-pressure cold air.
8. The method for preparing a glass substrate according to claim 1, wherein: After the polishing step, a tempering step is further included, and the tempering step includes: The glass substrate is placed in a potassium salt solution and soaked for 60 to 75 minutes.
9. The method for preparing a glass substrate according to any one of claims 7 or 8, wherein: After the tempering step, a printing step is further included, wherein the printing step is to print ink onto the light incident surface and / or the light emitting surface using a silk screen printing process.
10. A display screen, characterized in that: include Multiple splicing screens and LED light strips, wherein both sides of the LED light strips are respectively connected to at least two of the splicing screens; Among them, the splicing screens include a display panel, a backlight module and a glass substrate, the glass substrate has a light incident surface, a light emitting surface opposite to the light incident surface and a side surface located between the light incident surface and the light emitting surface, and the side surface is arranged perpendicular to the light incident surface and the light emitting surface. The glass substrate is attached to the side of the display panel facing away from the backlight module, and the side surface of the glass substrate is seamlessly spliced with the side of the LED light strip.
11. The display screen according to claim 10, wherein: The side surface is a polished bright surface.