KR101971954B1 - System for removing surface defects of a glass substrate and Method of removing surface defects of a glass substrate using the same - Google Patents

System for removing surface defects of a glass substrate and Method of removing surface defects of a glass substrate using the same Download PDF

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Publication number
KR101971954B1
KR101971954B1 KR1020150088603A KR20150088603A KR101971954B1 KR 101971954 B1 KR101971954 B1 KR 101971954B1 KR 1020150088603 A KR1020150088603 A KR 1020150088603A KR 20150088603 A KR20150088603 A KR 20150088603A KR 101971954 B1 KR101971954 B1 KR 101971954B1
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KR
South Korea
Prior art keywords
defect
glass substrate
unit
filler
defects
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KR1020150088603A
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Korean (ko)
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KR20160150509A (en
Inventor
이창희
나상업
이호군
박준영
Original Assignee
주식회사 엘지화학
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Priority to KR1020150088603A priority Critical patent/KR101971954B1/en
Publication of KR20160150509A publication Critical patent/KR20160150509A/en
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/001—General methods for coating; Devices therefor
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C19/00—Surface treatment of glass, not in the form of fibres or filaments, by mechanical means
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/958—Inspecting transparent materials or objects, e.g. windscreens

Abstract

A glass substrate defect removing system according to an embodiment of the present invention includes a transfer unit for transferring a glass substrate; An inspection unit for determining whether or not a defect exists on the surface of the transferred glass substrate and, if there is an existing defect, determining whether or not the defect corresponds to a repairable defect; A classification unit for classifying the glass substrate according to the inspection result of the inspection unit; And a defect removing unit for repairing a glass substrate having a repairable defect on the surface of the classified glass substrate to remove defects; As shown in FIG.

Description

[0001] The present invention relates to a glass substrate defect removing system and a method for removing surface defects on a glass substrate using the same.

The present invention relates to a glass substrate defect removing system and a method for removing surface defects on a glass substrate using the same. More particularly, the present invention relates to a glass substrate defect removing system for repairing / removing a defect in a surface of a display glass, And a method for removing surface defects of a glass substrate using the same.

The process of making a product using glass includes a process of making a desired product by mixing a variety of minerals and chemicals, including sand, to form a liquid glass, and molding the product into a desired shape. Various types of defects can occur.

Among these defects, defects present on the surface of the glass in particular can be very lethal in the case of glass for display manufacture, since a microcircuit pattern must be formed on the surface of the glass in order to produce a display product. There is a high possibility that the circuit pattern is damaged.

Therefore, in the past, in the process of manufacturing the display product, the surface of the glass was thoroughly inspected, and when there was a surface defect that does not match the inspection standard on the surface, the product had to be disposed of by NG treatment.

However, in the case of disposing some of the products as described above, the productivity is inevitably lowered. Even if there are defects higher than a certain level, if the products are directly applied to the products, the quality of the finished display products may be deteriorated.

DISCLOSURE Technical Problem The present invention has been made in view of the above-described problems, and it is an object of the present invention to provide a method of repairing / removing a defective surface defect on a surface of a display glass, The present invention aims to improve productivity and product quality by making it usable without being discarded.

It is to be understood, however, that the technical subject matter of the present invention is not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood by those skilled in the art from the description of the invention described below.

According to an aspect of the present invention, there is provided a glass substrate defect removing system including: a transfer unit for transferring a glass substrate; An inspection unit for determining whether or not a defect exists on the surface of the transferred glass substrate and, if there is an existing defect, determining whether or not the defect corresponds to a repairable defect; A classification unit for classifying the glass substrate according to the inspection result of the inspection unit; And a defect removing unit for repairing a glass substrate having a repairable defect on the surface of the classified glass substrate to remove defects; As shown in FIG.

Wherein the defect removing unit comprises: a filler supply device for supplying a filler to a defect formed in a concave shape on a glass substrate; A curing device for curing the filler filled in the interior of the defect; And a planarizing device for planarizing the filler so that the surface of the cured filler and the surface of the glass substrate are flush with each other.

The filler supply device may be to supply the filling solution into the defect.

As the filling solution, an acrylate-based solution or water glass can be applied.

As the curing apparatus, a UV curing apparatus or a thermosetting apparatus can be applied.

As the planarization apparatus, a grinder can be applied.

According to another aspect of the present invention, there is provided a method of removing glass substrate defects comprising: (a) transferring a glass substrate; (b) checking whether a defect exists on the surface of the transferred glass substrate and if the defect exists, if the defect corresponds to a repairable defect; (c) sorting the glass substrate according to the inspection result; And (d) repairing the glass substrate having a repairable defect on the surface of the classified glass substrate to remove defects.

According to another aspect of the present invention, there is provided a glass substrate defect removal system comprising: a transfer unit for transferring a glass substrate; An inspection unit for determining whether or not a defect exists on the surface of the transferred glass substrate and, if there is an existing defect, determining whether or not the defect corresponds to a repairable defect; A classification unit for classifying the glass substrate according to the inspection result of the inspection unit; A first defect removing unit for repairing a glass substrate having a repairable defect on a surface of the classified glass substrate to remove defects; And a second defect remover unit for removing a defective portion by cutting a glass substrate having unrepairable defects on the surface of the classified glass substrate; As shown in FIG.

The second defect removal unit includes: a defect position determination unit that determines a position of a defect on a glass substrate; And a cutting unit for cutting the glass substrate according to the determined position of the defect to remove the region where the defect exists. As shown in FIG.

According to another aspect of the present invention, there is provided a method of removing a glass substrate defect, comprising the steps of: (a) transferring a glass substrate; (b) checking whether a defect exists on the surface of the transferred glass substrate and if the defect exists, if the defect corresponds to a repairable defect; (c) sorting the glass substrate according to the inspection result of the inspection unit; (d) repairing the glass substrate in which repairable defects exist on the surface of the classified glass substrate to remove defects; And (e) cutting a glass substrate having unrepairable defects on the surface of the glass substrate so as to remove defective portions; .

According to an aspect of the present invention, even a display glass that does not meet the quality inspection standard can be recycled through removal of defects by repair, so that the previously discarded glass can be used as a good product, thereby improving productivity and quality .

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given below, serve to further the understanding of the technical idea of the invention. And should not be construed as limiting.
1 is a block diagram showing a configuration of a glass substrate defect removing system according to an embodiment of the present invention.
2 to 6 are views showing a process of repairing defects of a glass substrate by using a glass substrate defect removing system according to an embodiment of the present invention.
7 is a view showing a wiring pattern formed on a glass substrate that has been repaired using a glass substrate defect removing system according to an embodiment of the present invention.
8 is a view showing a state in which a wiring pattern is formed in a state where defects are present on a glass substrate.
9 is a block diagram illustrating a glass substrate defect removal system according to another embodiment of the present invention.
10 is a block diagram showing an exemplary configuration of a second defect removal unit constituting the glass substrate defect removal system shown in FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only some of the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

First, the structure of a glass substrate defect removing system according to an embodiment of the present invention will be described with reference to FIG.

1 is a block diagram showing a configuration of a glass substrate defect removing system according to an embodiment of the present invention.

1, a glass substrate defect removal system according to an embodiment of the present invention includes a transfer unit 10, an inspection unit 20, a classification unit 30, and a defect removal unit 40 .

The transfer unit 10 transfers a glass substrate applied to a display, and can be implemented in various forms such as a conveyor belt and a transfer roller.

The inspection unit 20 determines whether or not there is a defect on the surface of the glass substrate transported in the system. If there is an existing defect, the inspection unit 20 determines whether or not the defect corresponds to a repairable defect.

Here, the criterion for determining whether the defect exists and whether the defect corresponds to a repairable defect in the presence of the defect includes a depth and / or a length and / or a width of a defect generated in a concave shape on the surface of the glass And the like. That is, the inspection unit 20 can measure the size of the defect, and when the inspection unit 20 has the function of measuring the size of the defect, the information about the size of the defect measured by the inspection unit 20 May be used to determine the amount of the filler to be supplied to the defect removing unit 40 to be described later.

However, the setting of the reference size may vary depending on the type of the display product to which the glass substrate is applied. That is, in the case of a display product to which a very large size glass substrate is applied, the reference size may be set relatively large, and conversely, in the case of a display product to which a very small size glass substrate is applied, It can be set.

However, the setting of the reference value is not determined solely by the size of the glass substrate, and it is also possible to determine the quality judgment criterion of the glass substrate relatively strictly or to apply the relaxed criterion in view of the specificity of the application field .

The classification unit (30) classifies the glass substrate according to the inspection result of the inspection unit (20).

That is, when the glass substrate has only a defect of less than a predetermined size on the surface of the glass substrate or no defect is present at all, the classification unit 30 classifies the defect into a good product, Is classified as a repairable defective product and a non-repairable defective product depending on whether or not the defective product exceeds a predetermined reference size.

The defect removal unit 40 removes defects by repairing the glass substrate in which only defects in the glass substrates classified by the classification unit 30 are present but the repairable level of defects is present.

The detailed structure of the defect removing unit 40 and the defect removing process by repairing the glass substrate using the defect removing unit 40 will be described in detail with reference to FIG. 2 to FIG.

2 to 6 are views showing a process of repairing defects of a glass substrate by using a glass substrate defect removing system according to an embodiment of the present invention.

2 to 6, the bonding removal unit 40 includes a filler supply device 41 for supplying a filler W into a defect formed in a concave shape on a glass substrate G, And a planarization device 43 for planarizing the filler so that the surface of the glass substrate and the surface of the cured filler W are coplanar with each other .

3, the filler supply device 41 supplies a filler to the inside of a defect formed in a concave shape on the surface of the glass substrate G. The filler W used in the process is a TFT- An acrylate-based solution used as an overcoat material may be used, and water glass or the like may also be used. However, the kind of the filler (W) applicable to the present invention is not limited thereto.

That is, the filler (W) has transparency like a glass substrate to be applied to a display, so that no trace remains after the inside of the defect is filled, and it can be used as long as it does not affect the progress of the display process.

On the other hand, the filler supply device 41 can determine the filler supply amount by referring to the information on the size of the defect measured by the inspection unit 20, as described above. In the case where the filler supply device 41 is implemented so as to determine the filler supply amount according to the size of the defect, the surface polishing process can be shortened by supplying the filler only in an amount sufficient to fill the interior of the defect, Usage can also be saved.

Referring to FIG. 4, the curing device 42 is configured to cure the filler W filled in the defect to integrate with the glass substrate. The curing device 42 may be a UV curing device or a thermosetting device.

Referring to FIG. 5, in the planarization apparatus 43, when the filler W is sufficiently filled in the recess-shaped defect, and the filler W is subjected to a hardening process, the hardened filler W has a groove shape In order to apply the glass substrate G to a display product, it is required to planarize the glass substrate G.

That is, the planarization apparatus 43 polishes the filler W cured so that the surface of the filler W filled in the concave groove-shaped defect and the surface of the glass substrate G are coplanar For example, a grinder may be used.

A method of removing defects formed on a glass substrate using a defective glass substrate removing system according to an embodiment of the present invention as described above, And includes the same steps.

That is, a method of removing a glass substrate defect according to an embodiment of the present invention includes the steps of (a) transferring a glass substrate, (b) determining whether a defect exists on the surface of the transferred glass substrate, (C) sorting the glass substrate according to the result of the inspection, and (d) repairing the glass substrate in which the repairable defect exists on the surface of the sorted glass substrate, .

As described above, according to the glass substrate defect removing system and the glass substrate defect removing method using the same according to an embodiment of the present invention, the sizes of defects existing on the surface of the glass substrate G are coincident with the pre- The glass substrate G can be repaired in such a manner as to cover the defect.

Therefore, according to the glass substrate defect removing system and the glass substrate defect removing method using the same according to the embodiment of the present invention, it is possible to prevent defects in the glass substrate, which can be generated by bubbles generated during the manufacturing process of the glass substrate, The defective product can be used without being discarded, thereby improving the productivity of the product.

That is, it can be clearly seen that the productivity of the product can be improved according to the present invention by referring to FIGS. 7 and 8 together with the following embodiments.

Example

The OC PR (Overcoat product: Model K11) manufactured by LG Chemical Co., Ltd. was dropped into defects and prebaked at 120 ° C for 90 seconds. The surface was planarized by polishing, and the repaired sample was patterned with BM PR Respectively.

In the case of the glass substrate that has been repaired as in the case of the above-described embodiment, it can be confirmed that the pattern is cleanly formed in the portion where the defect is repaired as shown in FIG.

However, unlike the present invention, when a patterning operation is performed immediately without repairing defects on a glass substrate, as shown in FIG. 8, a defect of a pattern or a defective pattern occurs in a region where a defect is formed and in the vicinity thereof Can be observed.

Next, a glass substrate defect removal system according to another embodiment of the present invention will be described with reference to FIGS. 9 and 10. FIG.

FIG. 9 is a block diagram showing a glass substrate defect removal system according to another embodiment of the present invention, and FIG. 10 is a block diagram showing an exemplary configuration of a second defect removal unit constituting the glass substrate defect removal system shown in FIG. to be.

9, a glass substrate defect removal system according to another embodiment of the present invention includes a transfer unit 10, an inspection unit 20, a classification unit 30, a first defect removal unit 40, Removal unit 50 as shown in FIG.

The glass substrate defect removing system according to another embodiment of the present invention is different from the glass substrate defect removing system according to the previous embodiment only in the structure of the defect removing units 40 and 50, Since it is substantially the same as in the example, it will be repeated, but the description will be omitted and only differences will be described.

The first defect elimination unit 40 includes a glass substrate G having a defect determined by the classification unit 30 and having a repairable defect according to a predetermined criterion, ), Which is substantially the same as the defect removal unit 40 in the above-described embodiment.

The second defect removing unit 50 is formed by cutting a glass substrate G having a non-repairable defect on the surface of the glass substrates G and removing the defective portion Thereby making it possible to obtain a glass substrate having a small size and having a defect removed.

10, the second defect removing unit 50 includes a defect position determining unit 51 for determining the position of the defect on the glass substrate G and a defect position determining unit 51 for determining the position of the identified defect (position on the glass substrate) And a cutting unit 52 for cutting the glass substrate G to remove a region where defects exist.

That is, the defect position determining unit 51 determines at which position on the glass substrate G a defect having a size that can not be repaired exists, and the cutting unit 52 determines the position of the defect, which is determined by the defect position determining unit 51 The glass substrate can be cut according to the information about the position of the glass substrate.

Meanwhile, the method of removing defects of a glass substrate according to another embodiment of the present invention is a method of removing defects generated in a glass substrate by using a glass substrate defect removing system according to another embodiment of the present invention described above, And includes the same steps.

That is, according to another embodiment of the present invention, there is provided a method of removing a glass substrate defect, comprising the steps of: (a) transferring a glass substrate; (b) determining whether a defect exists on the surface of the transferred glass substrate, (C) classifying the glass substrate according to the result of the inspection, (d) repairing the glass substrate having a repairable defect on the surface of the classified glass substrate, And (e) cutting the glass substrate in which unrepairable defects exist on the surface of the classified glass substrate, thereby removing the defective portion.

As described above, according to the glass substrate defect removing system and the glass substrate defect removing method using the same according to another embodiment of the present invention, when there is a defect on the surface of the glass substrate G, It is possible to repair the glass substrate G by repairing the glass substrate and removing the defective portion through the cut for the glass substrate having the insuperable defect.

Therefore, according to the glass substrate defect removing system and the glass substrate defect removing method using the same according to another embodiment of the present invention, it is possible to detect the defects formed on the glass substrate G regardless of whether or not the defects formed on the glass substrate G can be repaired It is possible to obtain a good glass substrate from which defects have been removed, thereby improving the productivity of the product.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not to be limited to the details thereof and that various changes and modifications will be apparent to those skilled in the art. And various modifications and variations are possible within the scope of the appended claims.

10: Feed unit
20: Inspection unit
30: classification unit
40: defect removing unit (first defect removing unit)
41: filler supply device 42: hardening device
43: Planarizer
50: second defect removing unit

Claims (10)

A transfer unit for transferring the glass substrate;
An inspection unit for determining whether or not a defect exists on the surface of the transferred glass substrate and, if there is an existing defect, determining whether or not the defect corresponds to a repairable defect;
A classification unit for classifying the glass substrate according to the inspection result of the inspection unit;
A first defect removing unit for repairing a glass substrate having a repairable defect on a surface of the classified glass substrate to remove defects; And
A second defect removing unit for removing a defective portion by cutting a glass substrate having unrepairable defects on its surface among the classified glass substrates;
/ RTI >
The inspection unit compares the size of a defect portion defined by at least one of a depth, a length and a width of a defect generated in a concave shape on the surface of the glass substrate with a preset reference size, If it is determined that the defect corresponds to a repairable defect,
The first defect removing unit includes a filler supplying device for supplying a filler to a defect formed in a concave shape on a glass substrate, a hardening device for hardening the filler filled in the defect, and a hardening device for hardening the surface of the glass substrate And a planarization device for planarizing the filler so that the surfaces are coplanar,
Wherein the filler supply device supplies a filler liquid to the defect, the supply amount of the filler is determined according to information on the size of the defect measured by the inspection unit,
The second defect removing unit includes a defect position determining unit for determining the position of the defect on the glass substrate and a cutting unit for cutting the glass substrate according to the determined position of the defect to remove the region where the defect exists Glass substrate defect removal system. delete delete The method according to claim 1,
In the filling liquid,
Acrylate-based solution or water glass. The method according to claim 1,
The curing apparatus includes:
A UV curing device or a thermosetting device. The method according to claim 1,
The planarization apparatus includes:
Wherein the glass substrate is a grinder. A glass substrate defect removing method using a glass substrate defect removing system according to any one of claims 1 to 6,
(a) transferring a glass substrate;
(b) checking whether a defect exists on the surface of the transferred glass substrate and if the defect exists, if the defect corresponds to a repairable defect;
(c) sorting the glass substrate according to the inspection result of the inspection unit;
(d) repairing the glass substrate in which repairable defects exist on the surface of the classified glass substrate to remove defects; And
(e) cutting a glass substrate having unrepairable defects on the surface of the glass substrate so as to remove defective portions;
And removing the glass substrate. delete delete delete
KR1020150088603A 2015-06-22 2015-06-22 System for removing surface defects of a glass substrate and Method of removing surface defects of a glass substrate using the same KR101971954B1 (en)

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RU2702447C1 (en) * 2018-10-23 2019-10-08 Акционерное общество "Институт пластмасс имени Г.С. Петрова" Repair method of glazing elements of aircrafts from organic glass
US20200282654A1 (en) * 2019-03-06 2020-09-10 Owens-Brockway Glass Container Inc. Repairing an Outer Surface of a Glass Product
CN115611529B (en) * 2022-10-26 2024-02-20 彩虹集团（邵阳）特种玻璃有限公司 Surface optimization process for glass ceramics after reinforcement

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JP2006162968A (en) 2004-12-07 2006-06-22 Sanyo Electric Co Ltd Method for manufacturing display panel and display apparatus using the same
JP2007197236A (en) 2006-01-25 2007-08-09 Nishiyama Stainless Chem Kk Method for manufacturing glass substrate for display and glass substrate

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JP4347067B2 (en) * 2002-04-03 2009-10-21 ＡｖａｎＳｔｒａｔｅ株式会社 Mother glass defect inspection method and apparatus, and liquid crystal display glass substrate manufacturing method
KR101280828B1 (en) * 2008-07-02 2013-07-02 엘지디스플레이 주식회사 Method for repairing defect in substrate
WO2011132929A2 (en) * 2010-04-21 2011-10-27 주식회사 엘지화학 Glass sheet cutting device

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JP2006162968A (en) 2004-12-07 2006-06-22 Sanyo Electric Co Ltd Method for manufacturing display panel and display apparatus using the same
JP2007197236A (en) 2006-01-25 2007-08-09 Nishiyama Stainless Chem Kk Method for manufacturing glass substrate for display and glass substrate

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