CN219117367U

CN219117367U - Glass cover plate

Info

Publication number: CN219117367U
Application number: CN202222963539.XU
Authority: CN
Inventors: 何德恩; 楚竹清; 钱光明
Original assignee: Boen Hi Tech Huizhou Co ltd
Current assignee: Boen Hi Tech Huizhou Co ltd
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-06-02
Anticipated expiration: 2032-11-07

Abstract

The application relates to the technical field of display screens, a glass cover plate is disclosed, the glass cover plate includes glass substrate, glass substrate includes relative first face and second face, first face is openly just first face is used for electroplating the functional layer, the second face is the reverse side, the glass cover plate still includes the protection cladding material, the protection cladding material covers the second face, the protection cladding material includes metal oxide. The glass cover plate comprises a glass substrate, and because the second surface is covered by the protective coating, the glass cover plate is contacted with the high-temperature glue, and the residual offset printing or marks caused in the clamping process of the clamp are all positioned on the protective coating and cannot be left on the second surface, so that the pollution to the glass substrate is avoided; secondly, when electroplating the functional layer on the first surface, the protective coating can protect the second surface and avoid the back surface heterochromatic problem caused by overflow plating or coiling plating in the electroplating process, thereby improving the product qualification rate.

Description

Glass cover plate

Technical Field

The application relates to the technical field of display screens, in particular to a glass cover plate.

Background

At present, in the electroplating process of a hard film of a front cover of a curved mobile phone, intelligent wearing (a watch, a bracelet and the like), a vehicle-mounted, intelligent home and the like, electroplating is needed through a pasting method, namely, the back surface of a glass cover plate is glued with high-temperature glue and then is pasted on electroplating equipment, and offset printing is remained at a place contacted with the high-temperature glue and cannot be removed; in addition, when the hard film is electroplated, the problem of uneven color of the electroless plating surface can be caused by overflow plating or winding plating, and the qualification rate of the product is low.

Disclosure of Invention

In view of this, this application provides a glass apron to solve among the prior art glass apron after electroplating the dura mater of protecgulum, easily remain offset printing, local heterochromatic, the low problem of product percent of pass.

The embodiment of the application proposes a glass apron, including glass substrate, glass substrate includes relative first face and second face, first face just first face is used for electroplating the functional layer, the second face is the reverse side, glass apron still includes protection coating and transition layer, protection coating covers the second face, protection coating includes metal oxide, the transition layer is located protection coating deviates from one side of second face.

In one embodiment, the protective plating includes at least one of an aluminum oxide layer, a chromium oxide layer, and a titanium oxide layer.

In one embodiment, the thickness of the protective coating is in the range of 80nm to 120nm in a direction perpendicular to the first face and the second face.

In one embodiment, the thickness of the protective coating is 100nm in a direction perpendicular to the first and second faces.

In an embodiment, the transition layer is a silicon oxide layer, and the thickness of the transition layer is 4 nm-6 nm along a direction perpendicular to the first face and the second face.

In an embodiment, the thickness of the transition layer is 5nm in a direction perpendicular to the first face and the second face.

In an embodiment, an adhesive layer is covered on one side of the transition layer, which is away from the protective coating.

In one embodiment, the glass substrate is a cambered glass.

In an embodiment, the glass substrate is non-white glass, the glass cover plate further comprises an ink layer, the ink layer is arranged on one side of the second surface, which is away from the first surface, and the ink layer is attached to one side of the protective coating, which is towards the second surface.

The glass cover plate comprises a glass substrate, and because the glass substrate comprises a second surface and the protective coating covers the second surface, before the glass substrate is electroplated with the functional layer, the glass substrate can be contacted with high-temperature glue or a clamp through the protective coating to fix the glass substrate on electroplating equipment, and the glass substrate is contacted with the high-temperature glue, and marks caused in the residual offset printing or clamping process by the clamp are all positioned on the protective coating and cannot be left on the second surface, so that the glass substrate is prevented from being polluted; secondly, when electroplating the functional layer on the first surface, the protective coating can protect the second surface and avoid the back heterochromatic problem caused by overflow plating or winding plating in the electroplating process, thereby improving the product qualification rate and effectively solving the problems of easy residual offset printing or imprinting, local heterochromatic and low product qualification rate of the glass cover plate after electroplating the hard film of the front cover in the prior art.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a glass cover plate according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a glass cover plate according to another embodiment of the present disclosure;

fig. 3 is a schematic perspective view of the glass cover plate shown in fig. 2.

The meaning of the labels in the figures is:

100. a glass cover plate;

10. a glass substrate; 11. a first face; 12. a second face;

21. a hard coat layer; 22. an anti-fingerprint film layer;

30. a protective coating;

40. a transition layer;

50. an adhesive layer;

60. an ink layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings, i.e. embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

In the description of the present application, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

For the purpose of illustrating the technical solutions described in this application, reference is made to the following description taken in conjunction with the accompanying drawings and examples.

The application provides a glass apron, can be arranged in the display screen subassembly the electroplating scheme of protecgulum dura mater, including but not limited to cell-phone, intelligence dress (wrist-watch, bracelet etc.), computer, on-vehicle terminal, intelligent electronic equipment such as house have the display screen subassembly to solve among the prior art glass apron behind the dura mater of electroplating the protecgulum, easily remain offset printing, local heterochromatic, problem that the product qualification rate is low.

Referring to fig. 1, in one embodiment of the present application, a glass cover plate 100 includes a glass substrate 10, and the glass substrate 10 includes a first surface 11 and a second surface 12 opposite to each other along a thickness direction of the glass substrate 10. The first surface 11 is a front surface and the first surface 11 is used for electroplating a functional layer, wherein the functional layer may include at least one of a hard film layer 21, a conductive layer (not shown), and an anti-fingerprint film layer 22; the second side 12 is the opposite side, i.e. the side facing the interior of the electronic device. The glass cover plate 100 further includes a protective coating 30, where the protective coating 30 covers the second surface 12, that is, the protective coating 30 is stacked on the second surface 12 and is tightly attached to the second surface 12, so that before the glass substrate 10 is electroplated with the functional layer, the glass substrate 10 can be contacted with high-temperature glue through the protective coating 30 to adhere the glass substrate 10 to electroplating equipment, and the offset printing with the high-temperature glue and the residual offset printing are all located on the protective coating 30 and not remained on the second surface 12, thereby avoiding pollution to the glass substrate 10; alternatively, the glass substrate 10 may be mounted by clamping to be fixed to the plating apparatus, so that the marks generated during clamping of the clamping apparatus are also located on the protective coating 30 and are not left on the second surface 12, thereby avoiding contamination of the glass substrate 10.

In addition, the protective coating 30 comprises a metal oxide, which can be subsequently directly stripped by a stripping solution, which is easy to strip without damaging the structure of the glass substrate 10.

Wherein, the anti-fingerprint film layer 22 can be used for weakening and decomposing the visibility of fingerprint grease, so that when a user touches the glass cover plate 100, the fingerprint of the user can be less or not remained on the glass cover plate 100. Further, the anti-fingerprint film layer 22 may be an AF anti-fingerprint film.

Among them, the hard coat layer 21 has excellent wear resistance and high hardness, is suitable for being used as a wear-resistant coating and protects the glass substrate 10, and is not easy to scratch and scratch. Further, the hard coat layer 21 may be a diamond-like film layer or an IP hard coat layer 21.

The conductive layer is used to increase the conductivity of the glass cover plate 100, i.e. to increase the conductivity of the display screen assembly, so as to enhance the current transfer caused by friction electrification when a user touches the glass cover plate 100.

The glass cover plate 100 includes a glass substrate 10, and since the glass substrate 10 includes a second surface 12 and the protective coating 30 covers the second surface 12, before the glass substrate 10 is plated with the functional layer, the glass substrate 10 may be contacted with a high temperature glue or a clamp through the protective coating 30 to fix the glass substrate 10 on a plating device, and then the glass substrate 10 is contacted with the high temperature glue and the residual offset printing or marks caused in the clamping process of the clamp are all located on the protective coating 30, and will not remain on the second surface 12, thereby avoiding pollution to the glass substrate 10; secondly, when the first surface 11 is electroplated with the functional layer, the protective coating 30 can protect the second surface 12 and avoid the back surface color-changing problem caused by overflow plating or winding plating in the electroplating process, thereby improving the product qualification rate and effectively solving the problems that after the hard film of the front cover is electroplated, the glass cover plate is easy to remain offset printing or imprinting, local color-changing and low in product qualification rate in the prior art.

It is understood that the glass substrate 10 may be a white glass substrate or a non-white glass substrate, wherein the non-white glass substrate may include a black glass substrate or an gray glass substrate or a green glass substrate, etc.

In one embodiment of the present application, the protective coating 30 is an alumina layer, and among conventional electroplating materials, alumina has a high stripping activity, is easy to strip, and has no residue, and is a preferred material for the protective coating 30.

Referring to fig. 1, in the present embodiment, the thickness of the protective coating 30 is 100nm along the direction perpendicular to the first surface 11 and the second surface 12. Through testing, the protective coating 30 with the thickness can play a good role in protecting the second face 12, and is easy to deplate and has no residue.

In other embodiments of the present application, the thickness of the protective coating 30 may be any value in the range of 80nm to 120nm, such as 80nm, 90nm, etc. along the direction perpendicular to the first surface 11 and the second surface 12, and accordingly, the stripping time, the stripping temperature, and the concentration of the chemical used for stripping need to be modified correspondingly, it will be understood that the greater the thickness of the protective coating 30, the longer the required stripping time, or the concentration of the chemical used for stripping may be increased, or the stripping temperature may be increased. Or, parameters such as the deplating time, the deplating temperature, the concentration of the liquid medicine used for deplating and the like are comprehensively modified, and the method is not limited.

Specifically, in one embodiment of the present application, the protective coating 30 is prepared by the process of: first, the glass substrate 10 is cleaned by ultrasonic waves; then vacuumize to 5.0 x 10 with UNILVAC 2050 machine ^-5 After 7 minutes of Torr and IB cleaning, the vacuum was pulled to 2.0 x 10 ^-5 And (3) Torr, heating and evaporating an electron gun to electroplate the alumina, wherein the film thickness of the alumina layer is controlled to be 100nm plus or minus 5nm, the speed is 2.5A/S, the current is 400MA, the temperature is 50 ℃, and the alumina layer is electroplated.

Furthermore, in another embodiment of the present application, the protective plating layer 30 may also be a chromium oxide layer or a titanium oxide layer; in still another embodiment of the present application, the protective plating layer 30 may be a composite layer formed by stacking any two of an aluminum oxide layer, a chromium oxide layer and a titanium oxide layer; in still another embodiment of the present application, the protective plating layer 30 may also include an aluminum oxide layer, a chromium oxide layer, and a titanium oxide layer, and the stacking order of the aluminum oxide layer, the chromium oxide layer, and the titanium oxide layer may be arbitrarily set. It should be noted that, if the stripping activity of the chromium oxide and the titanium oxide is not as strong as that of the aluminum oxide, the preparation parameters need to be properly adjusted in the electroplating and the stripping processes, for example, the methods of prolonging the stripping time, increasing the concentration of the liquid medicine used in the stripping, increasing the stripping temperature and the like can be adopted, and only the condition that the functional layer is not affected to be stripped or damaged during the stripping is ensured, and the proper material of the protective coating 30 can be selected according to the actual situation, so that the method is not limited.

Since the protective coating 30 includes a metal oxide, and has a strong stripping activity, the stripping time is relatively fast, and for convenience in controlling the stripping time, referring to fig. 1, in an embodiment of the present application, the glass cover plate 100 further includes a transition layer 40, where the transition layer 40 is located on a side of the protective coating 30 away from the second face 12, that is, the protective coating 30 is used as a primer layer and directly contacts with the opposite surface of the glass substrate 10, and the transition layer 40 is used as a covering layer of the protective coating 30, so that the transition layer 40 can be used to prolong the stripping time, and the transition layer 40 can also be used to enhance the adhesion between the protective coating 30 and a high-temperature glue used subsequently, so that the glass cover plate 100 can be firmly adhered on an electroplating apparatus, that is, a rotating barrel of a sputtering machine.

The transition layer 40 is a silicon oxide layer, and the thickness of the transition layer 40 is 5nm along the direction perpendicular to the first face 11 and the second face 12. Through testing, under the condition that the transition layer 40 with the thickness of 5nm is combined with the protective coating 30 with the thickness of 100nm, and the same deplating time, deplating temperature and concentration of liquid medicine used for deplating are compared with the condition that the transition layer 40 with the thickness of other layers is combined with the protective coating 30, the deplating is cleaner and does not pollute the glass substrate 10 by offset printing.

Specifically, in one embodiment of the present application, the electroplating preparation parameters of the transition layer 40 are: silicon oxide with the thickness of 5nm is electroplated, the speed is 0.5A/S, the current is 90MA, and the temperature is 50 ℃.

In other embodiments of the present application, the thickness of the transition layer 40 along the direction perpendicular to the first surface 11 and the second surface 12 may be any value ranging from 4nm to 6nm, for example, 4.5nm, 5.5nm, etc., and the subsequent stripping time, stripping temperature, and concentration of the liquid chemicals used for stripping need to be modified correspondingly, which is not limited herein.

Referring to fig. 1, in an embodiment of the present application, an adhesive layer 50 is covered on a side of the transition layer 40 facing away from the protective coating 30, that is, a high-temperature adhesive is laid on a side of the transition layer 40 facing away from the protective coating 30. On the one hand, the adhesive layer 50 is directly connected with the transition layer 40 and can be removed along with the deplating of the transition layer 40 and the protective coating 30, so that offset printing is avoided on the glass substrate 10, on the other hand, the glass substrate 10 can be adhered and fixed on a rotating barrel of a sputtering machine through the adhesive layer 50, and displacement of the glass substrate 10 in the hard coating plating process is avoided as much as possible.

Specifically, in the present embodiment, the adhesive layer 50 includes two rectangular adhesive strips, and covers only a partial area of the transition layer 40. It should be understood that in other embodiments of the present application, the number and shape of the adhesive strips included in the adhesive layer 50 may be other, so long as the glass substrate 10 provided with the transition layer 40 and the protective coating 30 is firmly fixed on the rotating barrel of the sputtering machine, which is not limited herein.

In one embodiment of the present application, the preparation process of the glass cover plate 100 is as follows: firstly, cleaning the glass substrate 10 by ultrasonic waves, and electroplating a protective coating 30 and a transition layer 40 on the second surface 12 in sequence; then, paving high-temperature glue on one side of the transition layer 40 away from the second surface 12, and adhering and fixing the high-temperature glue on a rotary barrel of a sputtering machine table to start coating the hard film layer 21, wherein the first surface 11 of the glass substrate 10 faces the target; secondly, after the hard coat layer 21 is plated, the product is taken to pass through a 3X deplating liquid (alkaline deplating liquid medicine), the deplating time is controlled to be about 3 minutes, and it can be understood that the deplating time can be finely adjusted according to the dirt degree and the deplating clean degree of the product, and the non-electroplated surfaces, namely the protective coating 30, the transition layer 40 and the adhesive layer 50 are deplating clean, so that no dirt or protective layer residue is ensured; finally, the whole electroplating process is completed after the wafer is removed and other functional layers such as the fingerprint-proof film layer 22 are electroplated after ultrasonic cleaning.

It will be appreciated that in other embodiments of the present application, the adhesive layer 50 may be omitted, i.e., the glass substrate 10 may be mounted by a jig to be fixed to a rotating drum of a sputtering station and be completely loaded. It can be appreciated that the design of the protective coating 30 and the transition layer 40 can also avoid the problem of color variation caused by imprinting caused in the clamping process of the fixture, and has strong applicability.

Referring to fig. 3, in an embodiment of the present application, the glass substrate 10 is a cambered glass, and the glass substrate 10 can perfectly avoid the problems of back side heterochromatic and offset residues by designing the protective coating 30 and the transition layer 40, so that the hard film plating of the cambered front cover which is difficult to realize can be realized in mass production.

Specifically, the glass substrate 10 may be 2.5D glass, i.e., the glass substrate 10 includes a planar region and a cambered surface region provided on at least one side of the planar region; alternatively, the glass substrate 10 is 3D glass, i.e., the glass substrate 10 is entirely arcuate in design.

Referring to fig. 2 and 3, in an embodiment of the present application, the glass substrate 10 is a non-white glass, the glass cover plate 100 further includes an ink layer 60, the ink layer 60 is disposed on a side of the second surface 12 facing away from the first surface 11, and the ink layer 60 is attached to a side of the protective coating 30 facing toward the second surface 12.

Specifically, the ink layer 60 is entirely located at the edge of the glass substrate 10 and has a rectangular frame shape, and the ink layer 60 does not cover the window area of the glass substrate 10, that is, the ink layer 60 is used to block the non-display area and highlight the display area.

It can be appreciated that the design concept of adding the protective coating 30 and the transition layer 40 on the glass substrate 10 to avoid the off-color, residual offset or imprint can be applied to various glass substrates 10.

The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims

1. The utility model provides a glass apron, includes the glass substrate, the glass substrate includes relative first face and second face, its characterized in that, the first face be openly just first face is used for electroplating the functional layer, the second face is the reverse side, the glass apron still includes protection coating and transition layer, protection coating covers the second face, protection coating includes metal oxide, the transition layer is located protection coating deviates from one side of second face.

2. The glass cover plate according to claim 1, wherein the protective plating layer comprises at least one of an aluminum oxide layer, a chromium oxide layer, and a titanium oxide layer.

3. The glass cover plate according to claim 1, wherein the thickness of the protective coating layer is in the range of 80nm to 120nm in a direction perpendicular to the first face and the second face.

4. A glass cover plate according to claim 3, wherein the thickness of the protective coating is 100nm in a direction perpendicular to the first and second faces.

5. The glass cover plate according to any one of claims 1-4, wherein the transition layer is a silicon oxide layer and has a thickness of 4nm to 6nm in a direction perpendicular to the first face and the second face.

6. The glass cover plate according to claim 5, wherein the thickness of the transition layer is 5nm in a direction perpendicular to the first face and the second face.

7. The glass cover plate according to claim 1, wherein an adhesive layer is provided on a side of the transition layer facing away from the protective coating.

8. The glass cover sheet of any one of claims 1-4, wherein the glass substrate is a cambered glass.

9. The glass cover plate of any one of claims 1-4, wherein the glass substrate is a non-white glass, the glass cover plate further comprises an ink layer, the ink layer is disposed on a side of the second face away from the first face, and the ink layer is attached to a side of the protective plating layer facing the second face.