KR101486861B1 - A device for laminating on a curved cover glass using rollers - Google Patents

A device for laminating on a curved cover glass using rollers Download PDF

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Publication number
KR101486861B1
KR101486861B1 KR1020140046928A KR20140046928A KR101486861B1 KR 101486861 B1 KR101486861 B1 KR 101486861B1 KR 1020140046928 A KR1020140046928 A KR 1020140046928A KR 20140046928 A KR20140046928 A KR 20140046928A KR 101486861 B1 KR101486861 B1 KR 101486861B1
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KR
South Korea
Prior art keywords
cover glass
roller
film
glass
curved
Prior art date
Application number
KR1020140046928A
Other languages
Korean (ko)
Inventor
가대현
허성환
김홍채
이광구
Original Assignee
주식회사 트레이스
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Priority to KR1020140046928A priority Critical patent/KR101486861B1/en
Application granted granted Critical
Publication of KR101486861B1 publication Critical patent/KR101486861B1/en

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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a lapping device for a curved cover glass using roller pressing, and more particularly, to a lapping device for a curved cover glass using roller pressing, And more particularly, to a cohesive device for a curved cover glass using a roller pressing method in which a sensor film is pressed against an inner surface of a curved cover glass by a roller.
According to the present invention, the planar sensor film can be precisely adhered to the cover glass made of curved surface, and there is an effect that the sensor film can be firmly adhered without any bubbles or floating parts therebetween.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a curved cover glass,
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a lapping device for a curved cover glass using roller pressing, and more particularly, to a lapping device for a curved cover glass by roller pressing, And more particularly, to a cohesive device for a curved cover glass using a roller pressing method in which a sensor film is pressed against an inner surface of a curved cover glass by a roller.
2. Description of the Related Art In general, a touch screen panel is an input device that replaces a keyboard and a mouse, and is a display device in which a user touches a touch screen panel installed on a display terminal with a hand or a touch pen to input desired information.
The touch screen panel is an ideal device that can perform intuitive work in a GUI (Graphic User Interface) environment and is widely used in computer-based training, simulation application, office automation application, education application, and game application. In recent years, a touch screen panel is widely used in various communication apparatuses to widen the display area while reducing the weight and thickness of the terminal.
In recent years, a curved display screen has appeared rather than a flat surface, so that a curved window has to be fitted to the curved surface of the display, thus requiring a curved touch screen panel.
FIG. 1A is a perspective view illustrating a jig used in a method of manufacturing a window member according to the related art, and FIG. 1B is a perspective view illustrating a process of attaching a hardened sheet to a window member using the jig of FIG.
In the method of manufacturing a window member according to the prior art example, a high-hardness sheet 33 suitable for a window member is processed, a body of a window member is manufactured, and the prepared high-hardness sheet 33 is formed into a body As shown in FIG. At this time, the body 31 is formed into a curved shape.
The high hardness sheet 33 made of a curved surface is placed on the outer surface of the body 31 and pressed and attached by the roller 43. [ In order to perform such a roll laminating process, an adhesive material is disposed between the high hardness sheet 33 and the body 31. After the optical transparent adhesive film is adhered to the hardened sheet 33, the hardened sheet 33 is placed on the outer surface of the manufactured body 31 with the optical transparent adhesive film facing the sheet, and a roll laminating process is performed .
When the jig 41 is fed while being pressed by the roller 43 in a state where the body 31 is disposed on the separate jig 41 used for the roll laminating process, the high-hardness sheet 33 is attached to the body 31 do.
However, in order to attach the curved sheet in this manner, the diameter of the roller must be smaller than the radius of curvature of the curved portion. Otherwise, the surface of the roller is not completely in contact with the curved surface, and the crimping is not correct. However, the cover glass of recent products has a very small radius of curvature of the curved surface portion, which requires a small-sized roller. However, the method of pressing the film slowly while releasing the film with a small-sized roller has a problem in implementation.
KR 10-2013-0007068 A KR 10-1260297 B1 KR 10-2014-0002470 A KR 10-2014-0002491 A
According to an aspect of the present invention, there is provided a sensor film comprising two rollers for pressing and curving an edge of a sensor film to form a curved surface, and a sensor film formed by a curved surface is attached to the inner surface of the curved cover glass, And an object of the present invention is to provide a cohesive device for a curved cover glass using roller pressing for applying pressure while rotating a cover glass.
Further, the present invention provides a roller pressing device for rotating a cover glass and a sensor film while gripping a cover glass and a sensor film between a roller having a large outer diameter and a roller having a small inner diameter, And to provide a lapping device for a curved cover glass using the same.
Further, the present invention provides a cohesive device for a curved cover glass using roller pressing, which prevents the cover glass rotated on the opposite side from contacting the attracting plate by rotating the opposite end of the attracting plate by a predetermined angle when the cover glass is rotated about 180 degrees .
In order to solve the above-described problems, the present invention, which is devised to solve the above-described problems, is an apparatus for pressing a cover glass 60 and a sensor film 70 to be cemented together by two rollers, A glass attracting plate 102; A first roller 104 positioned at one side edge of the glass attracting plate 102; A film adsorption plate (106) installed at a position opposite to an inner surface of the cover glass adsorbed on the glass adsorption plate (102) and adsorbing the sensor film (70); A second roller 108 installed on a side surface of the edge of the film attracting plate 106 in the vicinity of the first roller 104 and having a central axis parallel to the central axis of the first roller 104 ).
The diameter of the first roller 104 is relatively larger than the diameter of the second roller 108 and the radius of the second roller 108 is relatively larger than the radius of curvature of the curved surface portion of the cover glass 60 And smaller.
According to the present invention, the planar sensor film can be precisely adhered to the cover glass made of curved surface, and there is an effect that the sensor film can be firmly adhered without any bubbles or floating parts therebetween.
FIG. 1A is a perspective view showing a jig used in a method of manufacturing a window member according to the prior art; FIG.
FIG. 1B is a perspective view showing a process of attaching a high hardness sheet to a window member using the jig of FIG. 1A; FIG.
2 is an exploded perspective view showing the structure of a lid assembly according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view showing a state in which a planar sensor film is inserted into the cementing apparatus of Fig. 2; Fig.
4 is a cross-sectional view showing a process of moving the first roller downward to form the edges of the sensor film.
5 is a sectional view showing a preparation state for attaching a cover glass and a sensor film.
6 is a sectional view showing a state in which the edge of the molded sensor film is in contact with the inner surface of the cover glass.
7 to 11 are sectional views showing a process of attaching a cover glass and a sensor film while rotating a cover glass.
Hereinafter, a "coiling apparatus for a curved cover glass using roller pressing" (hereinafter referred to as "coiling apparatus") according to an embodiment of the present invention will be described with reference to the drawings.
2 is an exploded perspective view showing the structure of a lid assembly according to an embodiment of the present invention.
The laminating apparatus 100 comprises a glass attracting plate 102 for attracting and moving the cover glass 60 and a film attracting plate 106 for attracting and moving the sensor film 70. Although the glass attracting plate 102 and the film attracting plate 106 are arranged close to each other in parallel, the glass attracting plate 102 may be installed at a predetermined angle.
The first roller 104 is disposed on the side where the glass attracting plate 102 and the film attracting plate 106 are arranged side by side. The central axis of the first roller 104 is disposed in parallel with the plane of the glass attracting plate 102 and the film attracting plate 106. [ Since the first roller 104 presses the surface of the sensor film 70 and the cover glass 60 to perform a forming and pressing process, it is preferable that the surface of the first roller 104 is made of a soft material.
The second roller 108 is provided on the edge side of the film attracting plate 106. The second roller 108 is installed on the side of the edge of the film attracting plate 106 which is close to the first roller 104.
The first roller 104 and the second roller 108 are installed such that their central axes are parallel to each other. The second roller 108 is also made of a material similar to that of the first roller 104. The diameter of the first roller 104 is much larger than the diameter of the second roller 108. And the radius of the second roller 108 is made to be much smaller than the radius of curvature of the curved portion of the cover glass 60. [
The glass attracting plate 102 is a portion that grips the flat portion of the cover glass 60 and is generally formed in a shape and size similar to the flat portion of the cover glass 60. [ The glass attracting plate 102 absorbs the cover glass 60 by a vacuum suction force or an electrostatic force.
The glass attracting plate 102 is a flat plate having a predetermined thickness, and a plurality of through holes for generating a suction force may be formed on the lower surface. In the present invention, the glass attracting plate 102 is shown above and the film attracting plate 106 is shown below, but the up-down relationship may be reversed. In some cases, the glass attracting plate 102 and the film attracting plate 106 may be disposed laterally.
The cover glass 60 is attracted to the lower surface of the glass attracting plate 102 located at the upper portion. When the display device is made, the sensor film 70 is attached to the inner surface of the cover glass, do. Therefore, the glass attracting plate 102 is configured to contact the outer surface of the cover glass 60, and the sensor film 70 is attached to the inner surface on the opposite side.
When the left and right directions (directions connecting the bent edges) of the cover glass 60 adsorbed on the glass attracting plate 102 are defined as the horizontal direction, the vertical direction perpendicular to the vertical direction can be defined as the vertical direction. In the drawings of the present invention, the edge of the cover glass 60 is shown as being bent downward, and the bottom surface concaved in the figure is the inner surface (located at the bottom) in an actual device.
The sensor film 70 described in the present invention is a film layer for manufacturing a touch screen panel. The transparent film 70 has orthogonal transparent electrodes to provide a function of sensing the touch position. However, the present invention can also be used for attaching a film used for image display.
If the first roller 104 and the second roller 108 are pressed gradually from the edges of the cover glass 60 and the sensor film 70, the air bubbles entering between the cover glass 60 and the sensor film 70 It comes out cleanly while sticking out.
The glass adsorption plate 102 and the film adsorption plate 106 adsorb and transport the cover glass 60 and the sensor film 70, respectively, and the protective film (not shown) is removed during the transfer process. A marking for aligning the film is printed on the cover glass 60 and the sensor film 70, and a separate camera is used to check whether the sensor film 70 is in the correct position.
A curved surface lamination method using such a device will be described with reference to the drawings.
Fig. 3 is a cross-sectional view showing a state in which a sensor film in a planar state is inserted into the cementing apparatus of Fig. 2, Fig. 4 is a sectional view showing a process of forming the edge of the sensor film by moving the first roller downward, Fig. 6 is a cross-sectional view showing a state in which the edge of the molded sensor film is in contact with the inner surface of the cover glass, Figs. 7 to 11 are views showing a state in which the cover glass is rotated Sectional view illustrating a process of attaching the sensor film.
3 and 4, a process of forming the edge of the sensor film 70 in a planar state into a curved surface similar to the edge of the cover glass 60 will be described.
First, the first roller 104 is positioned above the second roller 108, and the film attracting plate 106 is positioned parallel to the paper. In this state, the first roller 104 and the second roller 108 are brought close to each other to sandwich the sensor film 70 between the two rollers. When the first roller 104 and the second roller 108 are positioned too far, the sensor film 70 is not caught between the two rollers, and the rollers are idle. And if it is positioned too close, the sensor film 70 is damaged by the pressure of the two rollers. Thus, the distance between the two rollers is set to approximately the same as the thickness of the sensor film 70, so that the two rollers lightly press the sensor film 70.
In this state, the first roller 104 is moved obliquely toward the lower side (see FIG. 4). Then, the opposite edge of the edge where the second roller 108 is installed is rotated slightly downward. The edge of the sensor film 70 is curved downward by the first roller 104. Since the film attracting plate 106 also slightly rotates downward, a curved surface is formed at the edge of the sensor film 70.
The process of attaching the sensor film 70 having the curved one-side edge to the inner surface of the cover glass 60 is as follows.
The film attracting plate 106 on which the sensor film 70 is attracted is positioned below the glass attracting plate 102 as shown in FIG. At this time, the cover glass 60 formed into a curved surface is adsorbed on the glass attracting plate 102. So that the inner surface of the cover glass 60 faces the film sucking plate 106 on the lower side. Then, the sensor film 70 to which the protective film is attached is adsorbed on the upper surface of the film adsorption plate 106. The inner surface of the cover glass 60 and the upper surface of the sensor film 70 are opposed to each other.
The position detection camera (not shown) senses the markings printed on the cover glass 60 and the sensor film 70 and aligns them to the correct positions.
Next, as shown in Fig. 6, the edge of the curved sensor film 70 is brought into contact with the inner surface of the cover glass 60. At this time, the upper surface of the cover glass 60 is in contact with the surface of the first roller 104, and the lower surface of the sensor film 70 is in contact with the surface of the second roller 108. And the glass attracting plate 102 is separated by removing the force of adsorbing the cover glass 60.
Next, as shown in Figs. 7 to 9, the first roller 104 and the second roller 108 are rotated in directions opposite to each other. In the drawings, the cover glass 60 is represented as rotating in the downward direction, but this may vary depending on the structure of the apparatus.
Since the two rollers rotate in the opposite direction, the cover glass 60 to which the sensor film 70 is attached is moved downward. When the attraction force of the film attracting plate 106 is also gradually removed, the sensor film 70 slides on the joining face of the film attracting plate 106 and moves to the inside face of the cover glass 60.
If necessary, an adhesive may be applied to the surface of the cover glass 60 or a film of an adhesive component may be adhered thereto.
When the roller continues to rotate, the cover glass 60 continues to rotate, and the curved surface portion where the cementing is started first slightly goes up to the opposite side. If the film adsorption plate 106 is left as it is, contact with the cover glass 60 coming from the bottom may occur and the film may be damaged. When the curved surface portion of the cover glass 60 reaches the upper side, the end portion of the film suction plate 106 is slightly raised upward. That is, the opposite edge of the edge where the second roller 108 is provided is rotated upward to prevent interference with the cover glass 60.
Through such a process, the cover glass 60 having the sensor film 70 attached to its inner surface as shown in FIG. 11 can be manufactured.
While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, As will be understood by those skilled in the art. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.
60: cover glass 70: sensor film
100: laminating apparatus 102: glass attracting plate
104: first roller 106: film attracting plate
108: second roller

Claims (2)

  1. An apparatus for pressing a cover glass (60) and a sensor film (70) to be cemented together by two rollers,
    A glass attracting plate (102) for attracting the outer surface of the cover glass (60) by a vacuum suction force or an electrostatic force;
    The center axis is located at one side edge of the glass attracting plate 102 in a state where the central axis is parallel to the plane of the glass attracting plate 102 and the center axis is moved at the beginning of the joining process to press the sensor film 70, A first roller 104 that presses an edge of the first roller 70 to form a curved surface;
    A film attracting plate 106 installed at a position opposite to an inner side surface of the cover glass 60 adsorbed on the glass attracting plate 102 to attract the sensor film 70;
    The film is smaller than the first roller 104 in diameter and is provided at a side of the edge of the film attracting plate 106 that is closer to the first roller 104, And a second roller (108) having a radius that is relatively smaller than a curvature radius of the curved portion of the cover glass (60)
    While the cover glass 60 and the sensor film 70 are rotated while being pressed by the first roller 104 and the second roller 108, the film attracting plate 106 gradually removes the attracting force, So as to allow the film (70) to slide from the film suction plate (106) to the inner side of the cover glass (60).
  2. delete
KR1020140046928A 2014-04-18 2014-04-18 A device for laminating on a curved cover glass using rollers KR101486861B1 (en)

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Application Number Priority Date Filing Date Title
KR1020140046928A KR101486861B1 (en) 2014-04-18 2014-04-18 A device for laminating on a curved cover glass using rollers

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101588600B1 (en) 2015-07-23 2016-02-01 주식회사 톱텍 bonding device for window, bonding method using it
KR101653597B1 (en) 2016-04-06 2016-09-09 주식회사 톱텍 Laminating device having press pad for varying volume and laminating method using it
KR20170035021A (en) 2015-09-22 2017-03-30 주식회사 톱텍 bonding device for window, bonding method using it
US9981417B2 (en) 2016-02-05 2018-05-29 Samsung Display Co., Ltd. Apparatus and method of manufacturing display apparatus
US10781128B2 (en) 2017-11-20 2020-09-22 Hyundai Motor Company Curved display device and manufacturing method thereof
KR102209125B1 (en) * 2019-01-30 2021-02-09 주식회사 진테크놀로지 Flexible Material Adhesion Apparatus for Curved Panel and Control Method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100026756A (en) * 2008-09-01 2010-03-10 (주)화백엔지니어링 Film adhering apparatus for rounded surface and film adhering method using the same
KR101214537B1 (en) * 2012-10-17 2012-12-24 강정석 Curved cover glass attaching apparatus
KR20130080295A (en) * 2012-01-04 2013-07-12 엘지전자 주식회사 Film laminating apparatus for a flat or curved plate member
KR20140002491A (en) * 2012-06-29 2014-01-08 삼성디스플레이 주식회사 Display device, manufacturing method of the same and manufacturing device of the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100026756A (en) * 2008-09-01 2010-03-10 (주)화백엔지니어링 Film adhering apparatus for rounded surface and film adhering method using the same
KR20130080295A (en) * 2012-01-04 2013-07-12 엘지전자 주식회사 Film laminating apparatus for a flat or curved plate member
KR20140002491A (en) * 2012-06-29 2014-01-08 삼성디스플레이 주식회사 Display device, manufacturing method of the same and manufacturing device of the same
KR101214537B1 (en) * 2012-10-17 2012-12-24 강정석 Curved cover glass attaching apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101588600B1 (en) 2015-07-23 2016-02-01 주식회사 톱텍 bonding device for window, bonding method using it
KR20170035021A (en) 2015-09-22 2017-03-30 주식회사 톱텍 bonding device for window, bonding method using it
US9981417B2 (en) 2016-02-05 2018-05-29 Samsung Display Co., Ltd. Apparatus and method of manufacturing display apparatus
KR101653597B1 (en) 2016-04-06 2016-09-09 주식회사 톱텍 Laminating device having press pad for varying volume and laminating method using it
US10781128B2 (en) 2017-11-20 2020-09-22 Hyundai Motor Company Curved display device and manufacturing method thereof
KR102209125B1 (en) * 2019-01-30 2021-02-09 주식회사 진테크놀로지 Flexible Material Adhesion Apparatus for Curved Panel and Control Method thereof

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