CN104308673A - Edge polishing method and device of display glass - Google Patents

Abstract

The invention discloses a display glass edge grinding method and device. In the back-stage processing process of the touch glass, after cutting the four sides of the display glass to form four end faces and four segment faces, only the display glass The glass is subjected to end edging treatment, which can reduce the area of micro-cracks caused by edging treatment. Finally, a mixed acid solution is used to etch the display glass after end edging treatment, which can effectively modify the edging process of the display glass. The micro-cracks generated during the processing can effectively improve the four-point bending resistance test capability of the touch glass product. Compared with the traditional display glass edging treatment method, the embodiment of the present invention only performs edging treatment on the end surface of the display glass. It can effectively reduce the area of microcracks. Therefore, after the etching treatment with the mixed acid solution, the microcracks produced by the edging treatment can be effectively reduced, thereby significantly improving the mechanical bending resistance of the touch glass product.

Description

Method and device for edge grinding display glass

technical field

The invention relates to the field of display technology, in particular to a method and device for edge grinding display glass.

Background technique

With the development of display devices in the direction of thinning, high resolution, intelligence and energy saving, the use of touch screen (Touch Screen Panel) is becoming more and more widely, and the touch glass used to make touch screen is made of display glass , in the traditional touch glass processing industry, after cutting the display glass, it is necessary to perform computer numerical control edging on all the edges of the cut display glass. However, in the edging process of the cut display glass, the edge The problem of micro-cracks cannot be avoided, and this problem will cause the mechanical bending strength of the display glass itself to decrease, that is, the presence of more micro-cracks in the display glass will cause the problem of stress concentration in touch glass products, making the touch glass The finished product has low mechanical flexural strength when subjected to a four-point flexural test.

Therefore, how to reduce the micro-cracks generated in the edging process of the display glass after cutting, so as to improve the mechanical bending resistance of the touch glass product, is an urgent problem to be solved by those skilled in the art.

Contents of the invention

Embodiments of the present invention provide a method and device for edging display glass, which are used to reduce microcracks generated in edging treatment of display glass after cutting.

An embodiment of the present invention provides a method for edging display glass, including:

For the display glass that forms the end face and segment face after cutting, only the end face edging treatment is carried out;

Etching treatment is carried out on the display glass after end face grinding treatment by using mixed acid solution.

In a possible implementation manner, in the above-mentioned edging method provided by the embodiment of the present invention, before performing only the end-face edging treatment on the display glass that has been cut to form end faces and segment faces, it further includes:

Cut the four sides of the display glass to form four end faces and four segment faces.

In a possible implementation manner, in the above-mentioned edging method provided by the embodiment of the present invention, the display glass that is cut to form end faces and segment faces is only subjected to end face edging treatment, specifically including:

The four end faces of the display glass which are cut to form end faces and segment faces are sequentially edged; or,

Simultaneously edging two of the four end faces of the display glass cut to form end faces and segment faces; or,

The four end faces of the display glass which are cut to form the end face and segment face are subjected to edge grinding at the same time.

In a possible implementation manner, in the above-mentioned edging method provided in the embodiment of the present invention, the etching treatment of the display glass after the end face edging is carried out by using a mixed acid solution, specifically includes:

The display glass after the edge grinding treatment is etched with a mixed acid solution containing hydrofluoric acid.

An embodiment of the present invention provides an edge grinding device for display glass, including: an edge grinding unit and an etching unit;

The edging unit is used to only perform end edging treatment on the display glass that is cut to form end faces and segment faces;

The etching unit is used to etch the display glass after the edge grinding treatment by using a mixed acid solution.

In a possible implementation manner, in the above edging device provided in the embodiment of the present invention, the edging device further includes: a cutting unit;

The cutting unit is used to cut the four sides of the display glass to form four end faces and four segment faces.

In a possible implementation manner, in the above-mentioned edging device provided in the embodiment of the present invention, the edging unit is specifically used for:

The four end faces of the display glass which are cut to form end faces and segment faces are sequentially edged; or,

Simultaneously edging two of the four end faces of the display glass cut to form end faces and segment faces; or,

The four end faces of the display glass which are cut to form the end face and segment face are subjected to edge grinding at the same time.

In a possible implementation manner, in the above-mentioned edging device provided in the embodiment of the present invention, the etching unit is specifically used for:

The display glass after the edge grinding treatment is etched with a mixed acid solution containing hydrofluoric acid.

The beneficial effects of the embodiments of the present invention include:

Embodiments of the present invention provide a display glass edge grinding method and device. In the back-stage processing process of the touch glass, after cutting the four sides of the display glass to form four end faces and four segment faces, only the The display glass is subjected to end edging treatment, which can reduce the area of micro-cracks caused by edging treatment. Finally, the display glass after end edging treatment is etched with a mixed acid solution, which can effectively modify the display glass after grinding. The micro-cracks generated during the edge treatment can effectively improve the four-point bending resistance test capability of the touch glass product. Compared with the traditional display glass edging treatment method, the embodiment of the present invention only performs edging treatment on the end surface of the display glass. , can effectively reduce the area of micro-cracks. Therefore, after the etching treatment of the mixed acid solution, the micro-cracks produced by the edging process can be effectively reduced, thereby significantly improving the mechanical bending resistance of the touch glass product.

Description of drawings

Fig. 1 is a flow chart of a method for edging a display glass provided by an embodiment of the present invention;

Fig. 2 is a schematic diagram showing the position of each block mark after the display glass is cut according to the embodiment of the present invention;

Fig. 3 is a schematic diagram of edging treatment of display glass in the prior art;

Fig. 4 is a schematic diagram of the edge grinding treatment of the display glass provided by the embodiment of the present invention;

Fig. 5 is a schematic structural diagram of a display glass edging device provided by an embodiment of the present invention;

Figure 6 and Figure 7 are Weber curve analysis diagrams showing the four-point bending strength test results before and after mixed acid solution etching provided by the embodiment of the present invention, respectively;

Fig. 8 and Fig. 9 are Weber curve analysis diagrams showing four-point flexural strength test results before and after mixed acid solution etching provided by the embodiment of the present invention, respectively.

Detailed ways

The specific implementation of the display glass edge grinding method and device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

An embodiment of the present invention provides a method for edging display glass, as shown in FIG. 1 , comprising the following steps:

S101, performing only end surface edging treatment on the display glass formed into end surfaces and segment surfaces after cutting;

S102 , using a mixed acid solution to etch the display glass after the end surface edging treatment.

The above-mentioned edge grinding method of the display glass provided by the embodiment of the present invention needs to cut the four sides of the display glass in the post-processing process of the touch glass. As shown in FIG. a, the remaining part of each side except the place corresponding to the end face a corresponds to the segment face b, that is, the display glass is cut to form four end faces a and four segment faces b, and then only the end face a of the display glass is edging treatment, which can reduce the area of micro-cracks caused by edging treatment, and finally use a mixed acid solution to etch the display glass after the end face a edging treatment, which can effectively modify the display glass produced during the edging treatment. microcracks, which can effectively improve the four-point bending resistance test capability of touch glass products. Compared with the traditional display glass edging treatment method, the embodiment of the present invention only performs edging treatment on the end surface a of the display glass, which can effectively The area of micro-cracks is reduced. Therefore, after the etching treatment of the mixed acid solution, the micro-cracks produced by the edging treatment can be effectively reduced, thereby significantly improving the mechanical bending resistance of the touch glass product.

In specific implementation, in the above-mentioned edging method provided by the embodiment of the present invention, before only performing the edging treatment on the end face a of the display glass that is cut to form the end face a and the segment face b, it also includes: four sides of the display glass Cut to form four end faces a and four segment faces b. Specifically, in the back-end processing of the touch glass, the display glass must be cut before the display glass is edged. In actual implementation, laser cutting or cutter wheel cutting can be used. Here Not limited. As shown in Figure 2, the display glass is cut to form end face a and section face b, and the formed end face a is generally sharp, which is likely to cause scratches on the fingers of the finished glass during production operations, and may also cause glass edge collapse due to external force Corner, therefore, the display glass needs to be edged after cutting.

In the specific implementation, in the above-mentioned edge grinding method provided by the embodiment of the present invention, in order to avoid the problem of scratching fingers or edge chipping due to external force due to the sharpness of the end surface of the cut display glass, it is necessary to correct the display glass after cutting. Glass is subjected to edging treatment, and its edging treatment generally adopts computer numerical control edging technology for edging treatment. As shown in Figure 3, the traditional edging treatment is generally a full-surface edging treatment, that is, the display glass after cutting Carry out the edging treatment of end face and section surface, and the embodiment of the present invention then carries out partial type edging treatment, as shown in Figure 4, promptly only carry out end face edging treatment to the display glass that forms end face and section surface after cutting, edging The process may specifically include: sequentially edging the four end faces of the display glass that are cut to form end faces and segment faces; Edge grinding; or, simultaneously perform edge grinding on the four end faces of the display glass which are cut to form end faces and segment faces. Specifically, the embodiment of the present invention adopts partial edging treatment, which can effectively reduce the area of micro-cracks generated during the edging process.

In the specific implementation, in the above-mentioned edging method provided by the embodiment of the present invention, some micro-cracks will be generated in the display glass during cutting and edging, and these micro-cracks will cause the mechanical bending strength of the display glass itself to decrease, so After edging the display glass, use a mixed acid solution to etch the display glass after edging the end face. mixed acid solution for etching. Specifically, the mixed acid solution is used to etch the display glass, and the etching treatment may be performed only on the end face, or the end face and the segment face may be etched, which is not limited herein. The display glass after edging treatment is etched with a mixed acid solution containing hydrofluoric acid, which can effectively modify the micro-cracks generated during the cutting and edging process, thereby effectively improving the mechanical bending resistance of touch glass products.

Based on the same inventive concept, an embodiment of the present invention provides an edging device for display glass, as shown in FIG. 5 , which may include: an edging unit 01 and an etching unit 02;

The edging unit 01 is used to only perform end edging treatment on the display glass that is cut to form end faces and segment faces;

The etching unit 02 is used to etch the display glass after the edge grinding treatment by using a mixed acid solution.

In specific implementation, in the above-mentioned edging device provided by the embodiment of the present invention, the edging device, as shown in Figure 5, may also include: a cutting unit 03; the cutting unit 03 is used to cut the four sides of the display glass , forming four end faces and four segment faces.

During specific implementation, in the above-mentioned edging device provided by the embodiment of the present invention, the edging unit 01 is specifically used for:

The four end faces of the display glass which are cut to form end faces and segment faces are sequentially edged; or,

Simultaneously edging two of the four end faces of the display glass cut to form end faces and segment faces; or,

The four end faces of the display glass which are cut to form the end face and segment face are subjected to edge grinding at the same time.

In a specific implementation, in the above-mentioned edging device provided by the embodiment of the present invention, the etching unit 02 is specifically used to perform etching treatment on the display glass after the end surface edging treatment by using a mixed acid solution containing hydrofluoric acid.

In the specific implementation, in the back-end process of the touch glass, the display glass is cut and edged, and then it is subjected to a four-point bending resistance test (4 Point Bending, 4PB). Among them, the four-point bending test method is to carry out the pressure test of the bending strength of the long side and the short side of the glass product under different pressing speeds and different span conditions, and the final test data is expressed in Mpa. In general, the average value of the four-point bending strength test results of the display glass and B10 are used as a reference in the industry to judge the mechanical bending strength of the display glass. The stronger the four-point bending strength of the display glass, the greater the external force it can withstand. bigger. Among them, B10 refers to the accumulative arrangement of the test data of the four-point bending test from small to large, and the Weber probability model is used to calculate the value of the four-point bending strength corresponding to the cumulative probability of 10%. The test results are shown in Table 1. It can be seen from Table 1 that after cutting and edging the display glass, the average value of the four-point bending strength is 174Mpa, and B10 is 143Mpa. The test data are obtained according to the Weber probability model The Weibull curve analysis diagram is shown in Figure 6. After the display glass after edging treatment is etched by mixed acid solution, as shown in Table 1, its four-point bending strength test results are an average of 631Mpa, B10 is 550Mpa, and the test results are obtained according to the Weber probability model The Weber curve analysis diagram is shown in Figure 7, and the standard value of the four-point bending strength of soda-lime display glass (Asahi) in the industry is 550Mpa. It can be seen from this that the edge grinding method of the display glass provided by the embodiment of the present invention , reaching the industry standard.

Table 1

In actual implementation, in the back-end process of touch glass, if only the display glass is cut and then subjected to a four-point bending resistance test, the test results are shown in Table 2. It can be seen from Table 2 that the After cutting the display glass, the average value of the four-point bending strength is 650Mpa, and B10 is 449Mpa. The test results are shown in Figure 8 according to the Weber curve analysis diagram obtained by the Weber probability model. After the mixed acid solution etching treatment Finally, as shown in Table 2, the average value of the four-point bending strength test results is 937Mpa, and B10 is 805Mpa. The Weber curve analysis diagram of the test results obtained according to the Weber probability model is shown in Figure 9.

Table 2

From the above analysis, it can be seen that in the back-end process of touch glass, the display glass is cut and edged, compared with only the display glass is cut, the comparison of the four-point bending strength test results is shown in Table 3. The test data shows that the micro-cracks produced by the edging process can reduce the four-point bending strength of the display glass, and the end face formed by the cut display glass is easy to be cut and restricted, and it is prone to chipping during manufacturing and transportation, so grinding is required. Edge treatment, in order to minimize the micro-cracks produced by the edging treatment, so partial edging treatment is adopted in the edging treatment, that is, the edging method of the display glass provided in the embodiment of the present invention only applies to the end face of the cut display glass The edging treatment can effectively reduce the area of microcracks, and after the etching treatment with mixed acid solution, the microcracks produced by edging treatment can be effectively reduced, thereby significantly improving the mechanical bending resistance of touch glass products.

table 3

Through the above description of the implementation manners, those skilled in the art can clearly understand that the embodiments of the present invention can be implemented by hardware, or by means of software plus a necessary general hardware platform. Based on such understanding, the technical solutions of the embodiments of the present invention can be embodied in the form of software products, which can be stored in a non-volatile storage medium (which can be CD-ROM, U disk, mobile hard disk, etc.), Several instructions are included to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute the methods described in various embodiments of the present invention.

Those skilled in the art can understand that the drawing is only a schematic diagram of a preferred embodiment, and the modules or processes in the drawing are not necessarily necessary for implementing the present invention.

Those skilled in the art can understand that the units in the device in the embodiment can be distributed in the device in the embodiment according to the description in the embodiment, and can also be changed and located in one or more devices different from the device in the embodiment. The units in the above embodiments can be combined into one unit, and can also be further divided into multiple subunits.

The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.

Embodiments of the present invention provide a display glass edge grinding method and device. In the back-stage processing process of the touch glass, after cutting the four sides of the display glass to form four end faces and four segment faces, only The end face edging treatment is carried out on the display glass, which can reduce the area of micro cracks caused by the edging treatment. Finally, the display glass after the end face edging treatment is etched with a mixed acid solution, which can effectively modify the display glass. The microcracks generated during the edging process can effectively improve the four-point bending resistance test capability of touch glass products. Compared with the traditional display glass edging treatment method, the embodiment of the present invention only performs edging on the end surface of the display glass The treatment can effectively reduce the area of microcracks. Therefore, after the etching treatment of the mixed acid solution, the microcracks produced by the edging treatment can be effectively reduced, thereby significantly improving the mechanical bending resistance of the touch glass product.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (8)

1. show an edging method for glass, it is characterized in that, comprising:

The process of end face edging is only carried out to the display glass forming end face and section face after cutting;

Mixed acid solution is adopted to carry out etch processes to the display glass after carrying out the process of end face edging.

2. the method for claim 1, is characterized in that, before the described display glass to cutting rear formation end face and section face only carries out the process of end face edging, also comprises:

Four limits of display glass are cut, forms four end faces and four section faces.

3. method as claimed in claim 2, is characterized in that, the described display glass to forming end face and section face after cutting only carries out the process of end face edging, specifically comprises:

Successively edging process is carried out to four end faces of the display glass forming end face and section face after cutting; Or,

Edging process is carried out to two end faces in four end faces of the display glass in formation end face and section face after cutting simultaneously; Or,

Edging process is carried out to four end faces of the display glass forming end face and section face after cutting simultaneously.

4. the method for claim 1, is characterized in that, described employing mixed acid solution carries out etch processes to carrying out the display glass after end face edging, specifically comprises:

To the display glass carried out after the process of end face edging, the mixed acid solution comprising hydrofluoric acid is adopted to carry out etch processes.

5. show an edging device for glass, it is characterized in that, comprising: edging unit and etching unit;

Described edging unit, for only carrying out the process of end face edging to the display glass forming end face and section face after cutting;

Described etching unit, carries out etch processes for adopting mixed acid solution to the display glass after carrying out the process of end face edging.

6. edging device as claimed in claim 5, it is characterized in that, described edging device, also comprises: cutter unit;

Described cutter unit, for cutting four limits of display glass, forms four end faces and four section faces.

7. edging device as claimed in claim 6, is characterized in that, described edging unit, specifically for:

Successively edging process is carried out to four end faces of the display glass forming end face and section face after cutting; Or,

Edging process is carried out to two end faces in four end faces of the display glass in formation end face and section face after cutting simultaneously; Or,

Edging process is carried out to four end faces of the display glass forming end face and section face after cutting simultaneously.

8. edging device as claimed in claim 5, is characterized in that, described etching unit, specifically for:

To the display glass carried out after the process of end face edging, the mixed acid solution comprising hydrofluoric acid is adopted to carry out etch processes.