CN111470780A

CN111470780A - Preparation method of glass panel, display screen and display device

Info

Publication number: CN111470780A
Application number: CN202010280521.2A
Authority: CN
Inventors: 蔡森矗
Original assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd; Guangzhou Shirui Electronics Co Ltd
Current assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd; Guangzhou Shirui Electronics Co Ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2020-07-31

Abstract

The invention belongs to the technical field of display devices, and particularly discloses a glass panel, a display screen and a display device. The preparation method of the glass panel comprises the following steps: pretreating the glass substrate; arranging a protective film layer on the back of the glass substrate after the pretreatment; etching the front surface of the glass substrate to make the surface roughness Ra of the etched glass substrate be 0.12-0.22 um; and arranging an AF film layer on the etched surface. The glass panel is prepared and formed by the preparation method, the display screen comprises the glass panel, and the display device comprises the display screen. The preparation method of the glass panel, the display screen and the display device provided by the invention can improve the surface smoothness and the wear resistance of the glass panel, improve the touch feeling of the glass panel, the display screen and the display device and reduce the production cost of the glass panel.

Description

Preparation method of glass panel, display screen and display device

Technical Field

The invention relates to the technical field of display devices, in particular to a glass panel, a display screen and a display device.

Background

With the continuous development of liquid crystal technology, liquid crystal display devices are widely used in the fields of computers, mobile phones, televisions, and the like due to the advantages of clear image display, no flicker, light weight, thin thickness, low power consumption, and the like. The display panel is a core component of a liquid crystal display device, and is generally formed by combining a glass panel, a liquid crystal display element, and an optical film. The parameters such as smoothness, dynamic friction coefficient and haze of the glass panel forming the front surface of the display screen directly influence the display effect and the use hand feeling of the display screen, and particularly for a touch control type display screen, the glass panel is required to have a smoother surface and smaller dynamic friction resistance so as to improve the touch hand feeling and the touch smoothness.

The prior art discloses a smooth glass and a preparation method thereof, and the preparation method comprises the following steps: pre-treating, polishing and cleaning the glass substrate; spraying smooth film layer, controlling the pressure of the nozzle at 3Mpa-7Mpz and the flow at 15g/m²～30g/m²Spraying a smooth film layer material on the surface of the pretreated glass substrate to obtain a smooth film layer; and curing the smooth film layer, and curing the glass with the smooth film layer at the temperature of 40-650 ℃ for 10-30 min.

The preparation method of the smooth glass provided by the prior art mainly has the following problems: the smoothness is not enough, the dynamic friction coefficient is basically more than or equal to 0.35, and the low smoothness is difficult to realize; the adhesion of the smooth film layer is low, so that the wear resistance is poor, and the wear resistance times are less than or equal to 3000 times; the Anti-Glare (Anti-Glare, AG) optical parameters of the smooth film layer formed by spraying are unstable; poor hand feel when touched; the high haze effect is difficult to manufacture and the cost is high.

Disclosure of Invention

An object of the present invention is to provide a method for manufacturing a glass panel, which can improve the smoothness of the glass panel, reduce the coefficient of dynamic friction of the glass panel, and improve the AG property and touch property of the glass panel.

Another object of the present invention is to provide a glass panel, which can improve the smoothness of the glass panel, reduce the coefficient of dynamic friction of the glass panel, and improve the AG property and touch property of the glass panel.

Still another object of the present invention is to provide a display screen, which improves display performance and touch performance of the display screen.

It is still another object of the present invention to provide a display device which improves display performance and touch performance of the display device.

In order to achieve the purpose, the invention adopts the following technical scheme:

a method of making a glass panel comprising:

pretreating the glass substrate;

arranging a protective film layer on the back of the pretreated glass substrate;

etching the front surface of the glass substrate to make the surface roughness Ra of the etched glass substrate be 0.12-0.22 um;

an AF film is provided on the surface after etching.

As a preferred technical solution of a method for manufacturing a glass panel, the etching specifically refers to: and sequentially carrying out acid washing and frosting on the pretreated glass substrate to form uniformly distributed concave-convex points on the front surface of the glass substrate.

As a preferable technical solution of the method for manufacturing a glass panel, the etching further includes polishing a frosted surface after the frosting process.

As a preferred technical scheme of the preparation method of the glass panel, the pH value of the acid washing solution is 0-1 in the acid washing process, and/or the pH value of the frosting solution is 0-1 in the frosting process.

As a preferred technical scheme of the preparation method of the glass panel, the temperature of the pickling solution or the frosting solution is kept at 40-50 degrees in the pickling and/or frosting process.

As a preferred technical scheme of the preparation method of the glass panel, the protective film layer is a silk-screen printing ink layer.

As a preferred technical scheme of the preparation method of the glass panel, after the glass substrate is etched, the method further comprises the step of printing ink on the back surface of the glass substrate in a silk-screen mode.

A glass panel is prepared and formed by the preparation method of the glass panel.

A display screen comprising a glass panel as described above.

A display device comprising a display screen as described above.

The invention has the beneficial effects that:

according to the preparation method of the glass panel, uniform concave-convex points are formed on the front surface of the glass substrate in an etching mode, so that the glass panel has stable optical parameters, and the haze, the glossiness and the dynamic friction coefficient required by the display panel can be controlled by controlling the etching parameters; meanwhile, the AF film layer is arranged on the etched surface, so that the adhesion effect of the AF film layer on the glass substrate is improved, the wear resistance of the glass panel is enhanced, and the wear resistance can be 2-3 times that of the common AG-sprayed glass; meanwhile, AF is sprayed on the etched surface, so that the surface smoothness of the glass panel can be improved, the dynamic friction coefficient can be smaller, and the touch and writing fluency of the glass panel can be improved.

The glass panel provided by the invention is prepared by the preparation method of the glass panel, the prepared glass panel has good wear resistance, small dynamic friction coefficient and high smoothness, and the haze, the glossiness and the distinctness of the glass panel can be regulated and controlled by adjusting etching parameters in the preparation process, so that the regulation is convenient.

The display screen provided by the invention has the advantages of good wear resistance, high smoothness, small dynamic friction coefficient, good touch and low production cost by adopting the glass panel.

According to the display device provided by the invention, the touch feeling, smoothness and wear resistance of the display device are improved by adopting the display screen.

Drawings

Fig. 1 is a flow chart of a method for manufacturing a glass panel according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Fig. 1 is a flowchart of a method for manufacturing a glass panel according to an embodiment of the present invention, and as shown in fig. 1, the embodiment provides a method for manufacturing a glass panel having AG and AF functions to improve antiglare and fingerprint-proof properties of a display screen and a display device having the glass panel and to improve a tactile sensation of the glass panel. It should be noted that the glass panel in the present embodiment can be applied not only to a common non-touch lcd but also to a touch display, such as an infrared touch screen, a capacitive touch screen, and an OGS touch screen.

Specifically, as shown in fig. 1, the method for manufacturing a glass panel provided in this embodiment includes the following steps:

step S1, preprocessing the glass substrate;

the pretreatment comprises the following steps:

step S101, cleaning: cleaning and drying the glass raw material by using a high-pressure water gun or high-pressure water flow;

step S102, splitting: cutting a glass raw material into a plurality of glass substrates with required appearance sizes according to the required size of the glass panel;

step S103, edging and chamfering: according to the required shape of the glass panel, edging and chamfering are carried out on the glass substrate, and burrs of the glass substrate are removed;

step S104, cleaning and checking: and the glass substrate after edge grinding and chamfering is cleaned and dried and then detected, so that the appearance integrity of the glass substrate is ensured.

The pretreatment of the glass substrate is conventional in the art, and the present embodiment will not be described in detail, and besides the operations of step S101 to step S104, other pretreatment processes, such as opening holes or grooves on the glass substrate, may be provided according to the use requirements of the glass panel.

Step S2, arranging a protective film layer on the back of the glass substrate;

because the front surface of the glass substrate needs to be etched subsequently, in order to prevent the back surface of the glass substrate from being etched, a protective film layer for preventing etching needs to be arranged on the back surface of the glass substrate.

Preferably, in this embodiment, the protection rete is silk screen printing ink layer, and the setting of this kind of protection rete can not hinder subsequent tempering and handle, sets up simply, and processing is convenient.

In other embodiments, the protective film layer may also be a corrosion-resistant plastic film layer, such as a PET protective film, a PTFE plastic film, or the like. The plastic film is pasted on the back of the glass substrate in a film pasting mode so as to protect the back of the glass substrate from being corroded. After the etching is completed, the plastic film needs to be removed to avoid the plastic film from influencing the tempering treatment.

Step S3, etching the front surface of the glass substrate;

the front surface of the glass substrate is etched to form approximately uniformly distributed concave and convex points on the front surface of the glass substrate so as to achieve the required haze, glossiness and distinctness of image (DOI) of the glass panel, wherein DOI is a relative physical quantity reflecting the flatness of the solid surface, and is also called as image definition or projection definition.

In this embodiment, preferably, the etching of the front surface of the glass substrate by acid etching includes the following steps:

step S301, cleaning;

and cleaning the glass substrate to remove impurities on the surface of the glass substrate. Preferably, the glass substrate is cleaned by high-pressure water flow or by ultrasonic cleaning.

Step S302, acid washing;

and (2) placing the cleaned glass substrate in a pickling tank for pickling, and deeply cleaning the surface to be etched of the glass substrate, wherein the pickling solution in the pickling tank is hydrofluoric acid with the concentration of 8-15%, the concentration of the hydrofluoric acid is preferably 10%, and the pH value of the pickling solution is 0-1. In other embodiments, the acid used for pickling may also be other acids capable of performing an acidic etch.

Further, in this example, the pickling is performed in two baths, and the duration of each pickling is 8 to 15 seconds, preferably 10 seconds. By carrying out acid washing of the two tanks, the surface cleanliness of the glass substrate can be effectively ensured, and impurity pollution is avoided. In other embodiments, the pickling may be performed in one or more tanks, and the number of tanks and the duration of pickling per tank may be specifically set according to the cleaning effect required.

Step S303, frosting;

and frosting the pickled glass substrate to form approximately uniformly distributed concave-convex points on the front surface of the glass substrate, so that the front surface of the glass substrate is changed into a matte non-reflective surface, the reflectivity of the front surface of the glass substrate is reduced, and the AG performance of the glass panel is improved.

In this embodiment, the frosting is performed by using frosting powder, the main component of the frosting powder is fluoride and acid, wherein the fluoride is one of ammonium fluoride, potassium bifluoride and calcium fluoride, and the acid is one of hydrochloric acid and sulfuric acid. Further, the glass substrate is soaked and frosted in a manner that the frosting powder is prepared into a frosting solution, wherein the concentrations of the components in the frosting solution are respectively as follows: fluoride: 15% -25%, acid: 5 to 10 percent of water and 60 to 80 percent of water.

Further, in order to improve the frosting effect, the glass substrate is subjected to 5-groove frosting treatment, namely 5 times frosting, and each time frosting lasts for 8 to 15 seconds, and preferably 10 seconds.

In this embodiment, after the frosting treatment, the glass panel has a haze of 5 to 9 and a surface roughness of 0.12 to 0.22um, so as to ensure that the front surface of the glass substrate has sufficient haze, and achieve an Anti-Glare (AG) effect of the glass panel.

In other embodiments, the density and the etching depth of the concave-convex points can be controlled by controlling the number of grooves of the frosting and/or the duration of the single frosting, so as to regulate the haze, the glossiness and the distinctness of image of the glass panel.

In other embodiments, the glass may be substantially frosted with a frosting paste.

Step S304, polishing

The surface after frosting is polished, and the height of concave-convex points is changed, so that the touch feeling and the dynamic friction coefficient of the glass panel are changed, the concave-convex points are more uniform, and the surface touch feeling is more delicate.

Step S4, tempering;

and placing the etched glass substrate in a toughening furnace for toughening treatment so as to form compressive stress on the surface of the glass panel and improve the strength, impact resistance and bearing capacity of the glass. The tempering treatment is a treatment process adopted by the glass panel, and details are not repeated in this embodiment.

Step S5, printing ink on the back of the tempered glass substrate in a screen printing mode;

step S6, an AF film layer is arranged on the etching surface;

in this embodiment, preferably, an Anti-fingerprint (Anti-Finger) film is disposed on the front surface of the glass substrate by spraying, and specifically, the method includes the following steps:

step S601, plasma cleaning;

the glass substrate is subjected to plasma cleaning to eliminate static on the surface of the glass substrate, so that a subsequent sprayed film layer is attached to the surface of the glass substrate, and the spraying effect is prevented from being influenced by impurities on the glass substrate.

Step S602, spraying AF liquid medicine

Controlling the pressure of a spray gun to be 5-7 Mpa and the flow to be 10-15 g/30s, and spraying AF liquid medicine on the etched surface, wherein the AF liquid medicine comprises the following main components: fluoride 20-25% (mass percent), matrix resin: 15-20% (mass percent), curing agent: 1 to 3 percent (mass percentage) and 35 to 50 percent (mass percentage) of diluent.

Step S603, baking;

baking is needed after AF spraying to realize AF film layer curing, wherein the baking temperature is 120-180 ℃, the baking time is preferably 150 ℃, and the baking time is 20-40 min, preferably 30 min.

By spraying the AF liquid medicine on the etched surface, the adhesion capability of the AF film and the glass substrate can be improved, and a more exquisite and smooth surface can be formed. Although the surface of the AG film layer is uneven, the uneven points are very fine, so that the size of the water drop angle on the surface of the glass panel is not reduced after the AF liquid medicine is sprayed, and the glass panel still has the functions of dirt prevention and fingerprint prevention.

Step S7, cleaning inspection

And cleaning the prepared glass panel by high-pressure water flow washing or ultrasonic cleaning for later use.

In order to ensure the production quality of the glass panel, the prepared glass panel needs to be inspected to detect whether the appearance of the glass panel has defects or not, and the wear resistance, fingerprint resistance, touch feeling, reflectivity and the like of the glass panel.

After inspection, the DOI of the glass panel prepared by spraying the AF film layer on the etching surface is 55 +/-10; the coefficient of dynamic friction is less than 0.25 and may be less than 0.2; the glossiness is 50 +/-5; the light transmittance is more than or equal to 88, the haze is between 5 and 9, and the Ra is between 0.17 +/-0.05 um.

Compared with the existing AG film spraying and forming mode, the comparison test result of each parameter is as follows:

according to the preparation method of the glass panel provided by the embodiment, uniform concave-convex points are formed on the front surface of the glass substrate in an etching mode, so that the glass panel has stable optical parameters, and the haze, the glossiness and the dynamic friction coefficient required by the display panel can be controlled by controlling the etching parameters; meanwhile, the AF film layer is arranged on the etched surface, so that the adhesion effect of the AF film layer on the glass substrate is improved, the wear resistance of the glass panel is enhanced, and the wear resistance can be 2-3 times that of the common AG-sprayed glass; meanwhile, AF is sprayed on the etched surface, so that the surface smoothness of the glass panel can be improved, the dynamic friction coefficient can be smaller, and the touch and writing fluency of the glass panel can be improved.

The embodiment provides a glass panel which is prepared and formed by the preparation method of the glass panel. The prepared glass panel has good wear resistance, small dynamic friction coefficient and high smoothness, and the haze, the glossiness and the distinctness of the glass panel can be regulated and controlled by regulating the etching parameters in the preparation process, so that the regulation is convenient.

The embodiment also provides a display screen, which comprises the glass panel, and has the advantages of good wear resistance, high smoothness, small dynamic friction coefficient, good touch and low production cost.

The embodiment also provides a display device which comprises the display screen, and the touch feeling, smoothness and wear resistance of the display device are improved.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method of making a glass panel, comprising the steps of:

pretreating the glass substrate;

and arranging an AF film layer on the etched surface.

2. The method according to claim 1, wherein the etching specifically refers to: and sequentially carrying out acid washing and frosting on the pretreated glass substrate to form uniformly distributed concave-convex points on the front surface of the glass substrate.

3. The method of manufacturing according to claim 2, wherein the etching further comprises: and after the frosting treatment, polishing the surface after the frosting treatment.

4. The method according to claim 2, wherein the acid washing solution has a pH of 0 to 1 during the acid washing, and/or the frosting solution has a pH of 0 to 1 during the frosting.

5. The method of claim 2, wherein the temperature of the pickling solution or the frosting solution is maintained at 40 ° to 50 ° during the pickling and/or frosting.

6. The preparation method of any one of claims 1 to 5, wherein the protective film layer is a silk-screen ink layer.

7. The production method according to any one of claims 1 to 5, wherein after the glass substrate is etched, ink is screen-printed on the back surface of the glass substrate.

8. A glass panel produced by the method for producing a glass panel according to any one of claims 1 to 6.

9. A display screen comprising the glass panel of claim 8.

10. A display device, characterized in that it comprises a display screen according to claim 9.