KR101707392B1 - Cover glass and method for manufacturing the same - Google Patents

Cover glass and method for manufacturing the same Download PDF

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Publication number
KR101707392B1
KR101707392B1 KR1020150130808A KR20150130808A KR101707392B1 KR 101707392 B1 KR101707392 B1 KR 101707392B1 KR 1020150130808 A KR1020150130808 A KR 1020150130808A KR 20150130808 A KR20150130808 A KR 20150130808A KR 101707392 B1 KR101707392 B1 KR 101707392B1
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KR
South Korea
Prior art keywords
glass substrate
pattern
smog
rim
cover glass
Prior art date
Application number
KR1020150130808A
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Korean (ko)
Inventor
조형식
박광호
Original Assignee
크루셜텍 (주)
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Publication date
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Priority to KR1020150130808A priority Critical patent/KR101707392B1/en
Priority to PCT/KR2015/009899 priority patent/WO2016043572A1/en
Application granted granted Critical
Publication of KR101707392B1 publication Critical patent/KR101707392B1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

The present invention relates to a cover glass which has improved strength and can provide a high-quality texture and has fine pattern precision, and a method for producing the same. A cover glass according to an embodiment of the present invention includes a glass substrate, a smog pattern portion, and an offset portion. Here, the smog pattern portion is formed in a fine concavo-convex shape on one surface of the glass substrate. The offset portion is formed with a predetermined width along the rim of the opening portion formed through the outer rim of the glass substrate and the glass substrate from one surface of the glass substrate.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cover glass,

The present invention relates to a cover glass and a method of manufacturing the cover glass, and more particularly, to a cover glass having a fine pattern accuracy that can provide improved strength and a high quality of texture, and a method for manufacturing the same.

2. Description of the Related Art In recent years, there has been an increasing demand for designing mobile phones such as mobile phones, smart phones, personal digital assistants (PDAs), portable multimedia players (PMPs)

Accordingly, various attempts have been made to add a design to a cover portion (Main Window) disposed on the outer layer of the touch screen, in addition to the slimming of the display panel.

For example, a design element such as forming various colors or patterns in a bezel region of a cover portion in which black or white ink is printed to cover the wiring of the display panel is added.

Fig. 1 is a plan view of a conventional cover glass, and Fig. 2 is a cross-sectional view of an " A "

1 and 2, a conventional cover glass 10 is made of polyethylene (PET) adhered to one side of a glass substrate 20 with an optical clear adhesive (OCA) 30 A polyethylene terephthalate (PET) film 40 is provided. Then, an ultraviolet (UV) pattern 50 is formed on the PET film 40. The UV pattern 50 is coated with a layer 60 for implementing colors and the black matrix layer 70 is formed on the upper side of the layer 60. [

As described above, since the OCA 30 for adhering the PET film 40 and the PET film 40 to the glass substrate 20 is further provided and the UV pattern 50 is formed on the PET film 40, The conventional cover glass 10 has a problem that it is difficult to realize slimming down.

In addition, since the conventional cover glass 10 is not provided with a layer for realizing a texture, there is a limit to enhance the beauty of the cover glass 10.

On the other hand, in order to realize a sense of beauty in the cover glass, the surface of the cover glass is corroded with a corrosive liquid or roughly treated by a sand blast method to form a pattern having a texture, Elements are added.

FIG. 3 is a plan view of another conventional cover glass, and FIG. 4 is an enlarged view of the "B" portion of FIG.

3 and 4, in the conventional cover glass 10a, a portion (for example, a bezel region) in which a pattern is to be formed is opened in the glass substrate 20a and the other portion is covered and protected A corrosion pattern 80a is formed in an open part through a dipping method in which the glass substrate 20a is entirely immersed in an etchant.

However, in such a dipping method, corrosion rises up to the rim 21a of the glass substrate 20a and the rim 23a of the opening 22a formed through the glass substrate 20a. Therefore, micro cracks, shrinkage, and the like are generated in the rim portions 21a and 23a, and the strength of the rim portions 21a and 23a is lowered.

On the other hand, in another conventional cover glass, a portion (for example, a bezel region) in which a pattern is to be formed on a glass substrate is opened by a method such as silk screen printing, and a pattern is formed by sandblasting the open portion . However, even in such a method, since all of the edges of the openings formed through the glass substrate and the glass substrate are subjected to the sandblasting, microcracks, brittleness, and the like are generated and the strength of the edge portions is lowered. In addition, since it is difficult to adjust fine dimensions due to technical limitations of silkscreen printing, it is difficult to increase the precision of the pattern.

In order to solve the above problems, a technical object of the present invention is to provide a cover glass having improved strength and a high quality of texture and having fine pattern precision and a method for manufacturing the same.

According to an aspect of the present invention, there is provided a display device including: a glass substrate; A smog pattern portion formed on one surface of the glass substrate in a fine concavo-convex shape; And an offset portion formed on a surface of the glass substrate at an outer edge of the glass substrate and a predetermined width along an edge of the opening formed through the glass substrate.

In one embodiment of the present invention, the offset portion is formed on one side of the glass substrate, and may form a boundary with the smog pattern portion.

In one embodiment of the present invention, the smog pattern portion may be formed by corrosion or sandblasting.

According to another aspect of the present invention, there is provided a method of manufacturing a semiconductor device, including: forming a pattern on a surface of a glass substrate to be opened; forming a frame on one side of the glass substrate and an opening Providing a resist film so as not to open at a predetermined interval from the rim to the inside of the glass substrate; Forming a fine irregular shaped smog pattern portion by etching or sandblasting the open region on one side of the glass substrate; And removing the resist film to provide an offset portion having a predetermined width along a rim of one surface of the glass substrate and a rim of the opening.

In one embodiment of the present invention, the step of providing the resist film includes the steps of applying a photoresist ink or a photosensitive film to one surface of the glass substrate, disposing a mask pattern on the upper surface of the glass substrate, Exposure and development so that only the region where the pattern is to be formed is opened.

In one embodiment of the present invention, the step of removing the microcracks of the rim of the glass substrate, the rim of the opening, and the smog pattern portion between the step of forming the smog pattern portion and the step of providing the offset portion .

In one embodiment of the present invention, the offset portion is formed on one side of the glass substrate, and may form a boundary with the smog pattern portion.

According to an embodiment of the present invention, since the pattern for providing the smog pattern portion and the offset portion on the glass substrate is realized by using the photolithography technique, it is possible to fine-tune the dimension and thereby to use the conventional silk screen printing It is possible to form a precise pattern than to form a pattern.

Further, according to the embodiment of the present invention, since the offset portion to which no corrosion or sandblasting is applied is formed with a predetermined width along the rim of the glass substrate and the rim of the opening portion, the strength of the glass substrate can be maintained have.

It should be understood that the effects of the present invention are not limited to the above effects and include all effects that can be deduced from the detailed description of the present invention or the configuration of the invention described in the claims.

1 is a plan view of a conventional cover glass.
2 is a cross-sectional exemplary view of the portion " A " in Fig.
3 is a plan view of another conventional cover glass.
4 is an enlarged view of the portion " B " in Fig.
5 is a plan view illustrating a cover glass according to an embodiment of the present invention.
6 is an enlarged view of the portion " C " in Fig.
7 is a cross-sectional view taken along line DD of Fig.
8 is a flowchart illustrating a method of manufacturing a cover glass according to an embodiment of the present invention.
9 is a view illustrating a process of manufacturing a cover glass according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "indirectly connected" . Also, when an element is referred to as "comprising ", it means that it can include other elements, not excluding other elements unless specifically stated otherwise.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 5 is a plan view of a cover glass according to an embodiment of the present invention, FIG. 6 is an enlarged view of a portion "C" of FIG. 5, and FIG. 7 is a sectional view taken along line D-D of FIG.

5 to 7, the cover glass 100 according to an exemplary embodiment of the present invention may include a glass substrate 200, a smog pattern unit 300, and an offset unit 400.

In the present invention, the cover glass 100 may include all kinds of glass substrates including a window glass. The cover glass may cover the entire front or back of the portable terminal, such as a window glass or battery case. Further, the cover glass may be disposed on a part of the front surface or a rear surface of the portable terminal. At this time, the cover glass can be applied to a camera window, a function button, various decorations, and the like. When the cover glass is applied to the camera window, the camera window covers the camera module of the portable terminal and exposes the lens of the camera. When the cover glass is applied as a function button, it can be arranged so as to be the surface of the function button. The various decorating units may be all glass substrates arranged to have a decorative effect on the external appearance of the portable terminal, for example, one surrounding the camera window.

In the present invention, the bezel area may refer not only to the edge area on the cover glass, but also to a non-transmissive area that performs a pattern or decoration function, or a specific area that is displayed on a cover glass for functional discrimination.

The glass substrate 200 protects the display panel inside the portable terminal on which the cover glass 100 is mounted and can transmit the screen of the display panel. The glass substrate 200 may be cut to a certain size depending on the application to be used, and then the surface may be washed and dried.

The glass substrate 200 may be a glass material such as a soda-lime glass substrate, an alkali-free glass substrate, or a tempered glass substrate, but is not limited thereto, and may be made of a transparent resin material such as acrylic.

The smog pattern unit 300 may be formed on one side of the glass substrate 200. Here, the smog pattern part 300 may be formed in a fine concavo-convex shape, so that reflection of light in the smog pattern part 300 can be reduced. Therefore, when light is applied to the glass substrate 200 under the same conditions, the smog pattern part 300 may be blurred or fuzzy in comparison with other areas where the smog pattern part 300 is not formed, The distance may also provide an effect.

The smog pattern portion 300 may be formed through a corrosion process using a corrosive liquid or a sand blast process. In the case of using a corrosive liquid, the smog pattern portion 300 may be a corrosive region formed by corroding one surface of the glass substrate 200. As the etching process, a dipping method in which the glass substrate 200 is immersed in a corrosive liquid may be used.

When the sand blasting is used, the smog pattern portion 300 may be a portion formed by coarsely forming one surface of the glass substrate 200 by the injected sand.

Meanwhile, the smog pattern unit 300 may further include a color layer (not shown). The color layer may be formed by any one of vapor deposition, printing, spraying, and plating. For example, the color layer may be a multilayer thin film. When the color layer is a multilayer thin film, the multilayer thin film may be formed by stacking at least one of a metal oxide layer and a non-metal oxide layer. Such a multi-layered thin film can control the wavelength of the incoming light in various ways, and thus, colors can be implemented on the smog pattern unit 300. In addition, since the color layer can be provided directly on the smog pattern part 300 through the above-described method, optical transparent tackiness agent (OCA) or UV pattern provided in the conventional cover glass is unnecessary, Since the thickness of the cover glass 100 is not increased, it is also possible to make the cover glass 100 slimmer.

In a case where the smog pattern unit 300 is formed on one side of the glass substrate 200, when the cover glass 100 is installed on the portable terminal, the smog pattern unit 300 may be located inside the portable terminal. That is, the surface of the glass substrate 200 on which the smog pattern unit 300 is not formed is exposed to the outside, and the user's touch can be performed on the exposed surface. Since the color layer is formed in the smog pattern part 300, the smog pattern part 300 and the color layer can be protected from the touch of the user. Since the light incident on the glass substrate 200 can reach the color layer of the smog pattern part 300 directly, the transmittance can be high and the color of the color layer can be expressed clearly.

Also, the color layer may be formed on the other surface of the glass substrate 200, and the cover glass 100 may be installed on the portable terminal such that the smog pattern unit 300 is located outside the portable terminal. In this case, the light is refracted and refracted first in the smog pattern part 300 exposed to the outside before entering the glass substrate 200, and diffused reflection may be caused to exhibit a soft texture. The color layer may be provided on the smog pattern unit 300 or may be provided on the opposite side of the surface on which the smog pattern unit 300 is formed As shown in FIG. The smog pattern unit 300 may be provided in a bezel region of the glass substrate 200 and the color layer may be provided in a bezel region of the glass substrate 200.

The offset portion 400 is formed on one side of the glass substrate 200 along the edge 211 of the opening 210 formed through the outer frame 201 of the glass substrate 200 and the glass substrate 200 And can be formed with a predetermined width.

Here, the opening 210 may expose a speaker, a camera lens, a function button, a sensor, or the like, but is not limited thereto and may be for all parts capable of giving decorative effect.

The offset portion 400 may be formed on one side of the glass substrate 200 and may form a boundary with the smog pattern portion 300. The offset portion 400 may be formed as a portion which is not subjected to corrosion or sandblasting to form the smog pattern portion 300. That is, the offset portion 400 may be formed of the surface of the glass substrate 200 on which corrosion or sandblasting is not performed. The offset portion 400 allows the smog pattern portion 300 to be spaced apart from the rim 201 of the glass substrate 200 and the rim 211 of the opening portion 210 by a predetermined distance, .

The offset portion 400 is formed to have a predetermined width along the rim 201 of the glass substrate 200 and the rim 211 of the opening portion 210 and is not subjected to corrosion or sandblasting, 211 and 211 can be prevented from being lowered so that the strength at the edges 201 and 211 can be maintained. The width W of the offset portion 400 may be 30 um to 500 um.

FIG. 8 is a flowchart illustrating a method of manufacturing a cover glass according to an embodiment of the present invention, and FIG. 9 is a view illustrating a process of manufacturing a cover glass according to an embodiment of the present invention.

8 and 9, in a method of manufacturing a cover glass according to an embodiment of the present invention, a region where a pattern is to be formed on one side of a glass substrate is opened, and an outer frame on one side of the glass substrate and a glass substrate And a step S510 of providing a resist film so as not to open a portion of the glass substrate from the rim of the opening formed at a predetermined interval.

Here, the region in which the pattern is to be formed may denote a region where the smog pattern portion is to be formed by corrosion or sandblasting.

The region where the resist film is provided may further include another portion where corrosion or sandblasting is not performed together with a region to be formed with an offset portion to be described later. The other part where the corrosion or sandblasting is not performed includes a display area where a screen of the display panel is displayed, a region corresponding to a speaker, a camera and various sensors, a logo area, and a part of a design area can do.

According to an embodiment of the present invention, the formation of the pattern on the glass substrate can be realized by using a photolithography technique.

That is, the step S510 may include a step S511 of applying a photoresist ink or a dry film photoresist (DFR) 600 to one side of the glass substrate.

Here, the outer shape of the glass substrate 200 may be pre-processed into a shape to be used as a product, and the opening 210 may be pre-processed in the glass substrate 200 (FIGS. 9 (a) b)).

In addition, the photoresist ink may be an acid-resistant photoresist ink which does not react with a corrosive liquid to corrode the glass substrate 200. In addition, the photoresist ink may be a positive type which becomes soluble at the time of exposure, or a negative type which becomes insoluble. The photoresist ink may be applied to a substrate such as a screen print, a spin coat, a painting, a spray, a dip coating, a feeding and a slit die coating The glass substrate 200 may be coated with a predetermined thickness.

In step S511, the photoresist ink or the photosensitive film may be applied to one side of the glass substrate 200 as a whole.

In the step S510, a mask pattern may be disposed on one side of the glass substrate, and exposure and development may be performed to open only the region where the pattern is to be formed (S512).

The light 620 irradiating the mask pattern 610 in the exposure process may be UV light and the developer may be sprayed onto the glass substrate 200 in the developing process (see FIGS. 9C to 9D) ).

According to the embodiment of the present invention, since the resist film 650 is patterned by exposing and developing the photoresist ink or the photosensitive film, it is possible to finely adjust the dimension up to the range of 30 um, thereby using the conventional silk screen printing It is possible to form a precise pattern than to form a pattern. By performing the above steps, the resist film 650 can be formed so that only the portion where the smog pattern portion is to be formed is opened.

The method of manufacturing a cover glass according to an embodiment of the present invention may include forming a fine irregular-shaped smog pattern portion by performing corrosion or sandblasting on an open region on one side of a glass substrate (S520).

The corrosion or sandblasting 660 is applied to the open area 670 in the step S520 and the smog pattern part 300 is formed on the glass substrate 200 so that the glass substrate 200 is covered with the resist film 650 Parts can be protected from corrosion or sandblasting (see (d) to (e) in FIG. 9).

The method of manufacturing a cover glass according to an embodiment of the present invention includes a step S530 of removing a resist film and providing an offset portion formed with a predetermined width along the rim of the opening and the rim of one side of the glass substrate can do.

The offset portion 400 formed through such a process may be formed on one side of the glass substrate 200 and may form a boundary with the smog pattern portion 300 (see FIG. 9 (f)).

Here, since the resist film 650 is provided so as to cover the area corresponding to the display area, the speaker, the camera and various sensors, the logo area, and the area for design together with the offset part, S530), an area corresponding to the display area, a speaker, a camera, various sensors, a logo area, and a partial area for design may be provided at the same time as the offset part.

A method of manufacturing a cover glass according to an embodiment of the present invention may include a step of forming a smog pattern part S520 and a step of forming an offset part S530, The method may further include a step S525 of removing the rim 211 of the opening 210 and micro cracks of the smog pattern portion 300. [

In step S525, fine cracks and chipping caused by the corrosion or sandblasting can be removed, and the outer edge 201 of the glass substrate 200 and the edge 211 of the opening 210 can be removed, The strength of the portion can be increased.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

100: cover glass
200: glass substrate
300: Smog pattern part
400: Offset portion

Claims (7)

A glass substrate;
A smog pattern portion formed on one surface of the glass substrate in a fine concavo-convex shape; And
And an offset portion formed on one side of the glass substrate and having a predetermined width along a rim of the opening portion formed through the outer rim of the glass substrate and the glass substrate,
Wherein the offset portion borders the smog pattern portion. The method according to claim 1,
Wherein the offset portion comprises one surface of the glass substrate. The method according to claim 1,
Wherein the smog pattern portion is formed by corrosion or sandblasting. A region where a pattern is to be formed on one surface of the glass substrate is opened and a portion of the glass substrate at a predetermined interval from the rim of the glass substrate to the inside of the glass substrate from the rim of the opening portion formed through the glass substrate is opened Preparing a resist film so as to form a resist film;
Forming a fine irregular shaped smog pattern portion by etching or sandblasting the open region on one side of the glass substrate; And
Removing the resist film and providing an offset portion having a predetermined width along a rim of one surface of the glass substrate and a rim of the opening,
Wherein the offset portion forms a boundary with the smog pattern portion. 5. The method of claim 4,
The step of providing the resist film may include:
Applying a photoresist ink or a photosensitive film to one surface of the glass substrate;
And a step of disposing a mask pattern on the upper surface of the glass substrate, and exposing and developing the glass substrate so that only the region where the pattern is to be formed is opened. 5. The method of claim 4,
Further comprising the step of removing the microcracks of the edge of the glass substrate, the edge of the opening, and the smog pattern portion between the step of forming the smog pattern portion and the step of providing the offset portion . 5. The method of claim 4,
Wherein the offset portion comprises one surface of the glass substrate.
KR1020150130808A 2014-09-19 2015-09-16 Cover glass and method for manufacturing the same KR101707392B1 (en)

Priority Applications (2)

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KR1020150130808A KR101707392B1 (en) 2015-09-16 2015-09-16 Cover glass and method for manufacturing the same
PCT/KR2015/009899 WO2016043572A1 (en) 2014-09-19 2015-09-21 Cover glass and method for manufacturing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150130808A KR101707392B1 (en) 2015-09-16 2015-09-16 Cover glass and method for manufacturing the same

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010206297A (en) * 2009-02-27 2010-09-16 Nec Corp Casing for portable electronic device
KR101425364B1 (en) * 2013-12-26 2014-08-05 크루셜텍 (주) Cover glass and method of manufacturing the same
KR20140109341A (en) * 2013-03-05 2014-09-15 크루셜텍 (주) Cover glass and method of manufacturing the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010206297A (en) * 2009-02-27 2010-09-16 Nec Corp Casing for portable electronic device
KR20140109341A (en) * 2013-03-05 2014-09-15 크루셜텍 (주) Cover glass and method of manufacturing the same
KR101425364B1 (en) * 2013-12-26 2014-08-05 크루셜텍 (주) Cover glass and method of manufacturing the same

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