CN113459634B - Window panel laminating apparatus and window panel laminating method - Google Patents

Window panel laminating apparatus and window panel laminating method Download PDF

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Publication number
CN113459634B
CN113459634B CN202010462720.5A CN202010462720A CN113459634B CN 113459634 B CN113459634 B CN 113459634B CN 202010462720 A CN202010462720 A CN 202010462720A CN 113459634 B CN113459634 B CN 113459634B
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China
Prior art keywords
panel
window
cover window
elastic pressing
diaphragm
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CN202010462720.5A
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Chinese (zh)
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CN113459634A (en
Inventor
郑锺焕
安基用
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AP Systems Inc
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AP Systems Inc
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    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10Substrates, e.g. flexible substrates
    • H10K77/111Flexible substrates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0007Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality
    • B32B37/003Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality to avoid air inclusion
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1303Apparatus specially adapted to the manufacture of LCDs
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133305Flexible substrates, e.g. plastics, organic film
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133308Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133331Cover glasses
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16Constructional details or arrangements
    • G06F1/1601Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/02Constructional features of telephone sets
    • H04M1/0202Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026Details of the structure or mounting of specific components
    • H04M1/0266Details of the structure or mounting of specific components for a display module assembly
    • H04M1/0268Details of the structure or mounting of specific components for a display module assembly including a flexible display panel
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/80Constructional details
    • H10K50/84Passivation; Containers; Encapsulations
    • H10K50/841Self-supporting sealing arrangements
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B32B2037/1072Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure using a fluid jet
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301Details of OLEDs
    • H10K2102/311Flexible OLED
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/549Organic PV cells

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Fluid Mechanics (AREA)
  • Quality & Reliability (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The present disclosure relates to a window panel lamination apparatus and a window panel lamination method for laminating a panel to a cover window having an at least partially curved portion. The window panel laminating apparatus includes: a window attachment member to which a cover window is attached; a panel supporting member supporting the panel; and a gap adjustment member for adjusting a gap between the window attachment member and the panel support member, wherein the panel support member includes: an elastic pressing member transmitting elastic force to the panel, and a diaphragm surrounding the body member and inflated by fluid.

Description

Window panel laminating apparatus and window panel laminating method
Technical Field
The present disclosure relates to an apparatus and a window panel lamination method for laminating a panel to a window, and in particular to an apparatus and a method for laminating a panel to a window having an at least partially curved portion.
Background
Recently, with the push of display devices having various designs, curved display devices capable of further improving user's immersion have been actively developed. Such curved display devices can be applied (e.g., smart phones, tablet computers, TVs, etc.), have many advantages in design due to excellent space availability and aesthetic feeling, and have been actively studied in various application fields.
In general, curved display devices are used in their entirety in many cases, in each of which a flexible panel is attached to a cover window (cover window) having an at least partially curved portion. Accordingly, a number of techniques have been developed with each of which a flexible panel can be attached to a cover window having an at least partially curved portion.
However, although the cover window having the at least partially curved portion and the flexible panel are attached to each other, it is difficult to control the degree of deformation of the flexible panel. Further, since it is difficult to apply uniform pressure to all surfaces of the cover window, the following problems occur: it is very difficult to attach a flexible panel without generating bubbles on the curved surface area and the boundary surface thereof.
In particular, when a curved region covering a window exhibits a high curvature, the radius of curvature of such a curved region decreases, and the space in which a panel can be pressed to the covering window may be very narrow. Further, the pressing force is not sufficiently transmitted to the panel in the curved surface region, and therefore, there is a problem in that the cover window is not brought into full close contact with the flexible panel so that a defect such as a bubble is generated between the cover window and the panel.
Therefore, there is a need for a technique that can laminate a flexible panel without defects, even to laminate the flexible panel to various windows having a curved shape including a curved surface having a high curvature.
[ Prior Art literature ]
[ Patent literature ]
Korean patent laid-open publication No. 10-2014-0002470
Disclosure of Invention
The present disclosure provides an apparatus and method for uniformly laminating a flexible panel to a window having an at least partially curved portion.
According to an exemplary embodiment, a window panel laminating apparatus includes: a window attachment member to which a cover window including an at least partially curved portion is attached; a panel support member facing the window attachment member and configured to support a panel; a gap adjustment member configured to adjust a gap between the window attachment member and the panel support member, wherein the panel support member includes: a body member including a flow passage through which fluid is supplied; an elastic pressing member provided on the body member and configured to transmit an elastic force to the panel; and a diaphragm configured to surround the body member and expand due to fluid supplied through the flow channel, whereby the panel support member presses the panel against the cover window.
The upper surface of the elastic pressing member may be disposed at a position corresponding to a region of the cover window having the at least partially curved portion and be curved.
The cover window may be curved with respect to an axis passing through a central portion of the cover window.
The elastic pressing member may include: an elastomeric member composed of an elastomeric material; and a rigid body member at least partially surrounded by the elastomeric member and constructed of a material having a higher hardness than the elastomeric member.
The elastic pressing member may extend in one direction, and the rigid body member may have an axial shape extending parallel to the one direction.
The body member may further include fastening members fastened to both ends of the rigid body member and configured to fix the elastic pressing member.
The central axis of the rigid body member may be arranged to be positioned below half the height of the elastic pressing member.
A plurality of flow channels may be provided, the body member may further include a plurality of injection ports communicating with the plurality of flow channels, and at least a portion of the plurality of injection ports may be positioned at different heights from each other.
The window panel laminating apparatus may further include a fluid supply member configured to supply fluid to the plurality of injection ports, wherein the fluid supply member may supply fluid to the plurality of injection ports in sequence according to a height of the injection ports.
The body member may have a wall body shape, and the plurality of injection ports may include: an upper surface injection port provided on an upper surface of the main body member; and a side surface ejection port provided to a side surface of the main body member.
The upper surface injection port may be provided at a central portion of the upper surface of the body part, and the side surface injection port provided at the side surface of the body part may be provided symmetrically with respect to the central portion of the upper surface.
The side surface spray port may comprise: a first side surface ejection port provided to one side surface of the main body member; and a second ejection port provided at a position corresponding to the first side surface ejection port facing the other side surface of the one side surface.
The thickness of the elastic film constituting the diaphragm may be greater at the lower side than at the upper side of the panel support member.
The diaphragm may be constructed of a material having a higher shore (shore) hardness than the resilient pressing member.
The window panel laminating apparatus may further include a panel fixing member configured to fix the panel along an outer surface of the panel supporting member.
According to another exemplary embodiment, a window panel lamination method includes: attaching a cover window having an at least partially curved portion to the window attachment member; fixing a panel to a panel support member including an elastic pressing member configured to transmit elastic force to a cover window and a diaphragm inflated by a fluid; reducing a gap between the window attachment member and the panel support member, and pressing at least a portion of the panel against the cover window for the first time by the elastic pressing member; supplying a fluid to expand the membrane, again pressing the panel against the cover window; and separating the window attachment member and the panel support member from each other.
The panel may be arranged to be adhered to a carrier sheet and securing the panel to the panel support member comprises: supporting a carrier sheet at an upper end of the panel support member; pulling both ends of the carrier sheet; and pushing the carrier sheet by the panel fixing member, and fixing the carrier sheet along the outer surface of the panel supporting member.
It may be performed that a portion of the panel is pressed against the cover window for the first time by the elastic pressing member, so that the elastically deformed elastic pressing member transmits an elastic force to the panel.
It may be performed to press the panel against the cover window again, such that the upper portion of the membrane is inflated and subsequently the lower portion of the membrane is inflated.
Drawings
Exemplary embodiments may be understood in more detail from the following description taken in conjunction with the accompanying drawings, in which:
fig. 1 is a cross-sectional view illustrating a window panel laminating apparatus according to an exemplary embodiment.
Fig. 2 is a view showing a state in which an elastic pressing member presses a panel according to an exemplary embodiment.
Fig. 3 is a view showing a state of a diaphragm pressing panel according to an exemplary embodiment.
Fig. 4 is a view illustrating an operation of the elastic pressing member according to an exemplary embodiment.
Fig. 5 is a view illustrating operations of the elastic pressing member and the body member according to an exemplary embodiment.
Fig. 6 is a view illustrating a body part according to an exemplary embodiment.
Fig. 7 is a view showing a state in which the upper side of the diaphragm is expanded according to an exemplary embodiment.
Fig. 8 is a cross-sectional view illustrating a diaphragm according to an exemplary embodiment.
Fig. 9 is a flowchart illustrating a window panel lamination method according to another embodiment of the present invention.
Detailed Description
Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings. This invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the description, like reference numerals refer to like configurations, the drawings may be partially exaggerated for clarity of illustration of exemplary embodiments, and like reference numerals refer to like elements in the drawings.
Fig. 1 is a cross-sectional view illustrating a window panel laminating apparatus according to an exemplary embodiment.
Referring to fig. 1, a window panel laminating apparatus according to an exemplary embodiment is shown at least by its cross-sectional view.
Referring to fig. 1, a window panel laminating apparatus according to an exemplary embodiment may include: a window attachment member 200 for attaching a cover window 20 having an at least partially curved portion; a panel support member 100 facing the window attachment member 200 and supporting the panel 10; and a gap adjusting part 500 for adjusting a gap between the window attaching part 200 and the panel supporting part 100.
Further, the panel support member 100 may include: a body member 110 provided with a flow passage 112 through which a fluid F can be supplied; an elastic pressing member 130 provided on the body member 110 and transmitting elastic force to the panel 10; and a diaphragm 120 surrounding the body member 110 and expanding due to the fluid F supplied through the flow channel 112 so that the panel support member 100 can press the panel against the cover window 20.
A cover window 20 having an at least partially curved portion may be attached to the window attachment member 200. Here, the cover window 20 should be transparent because the cover window should be able to function to protect screen components of the display panel 10 from external influences and to transmit the display screen. Thus, glass or plastic (e.g., CPI or colorless polyimide) may be used, but the exemplary embodiment is not particularly limited thereto. At this time, the panel may be a flexible display panel 10 such that the panel may be laminated to a cover window 20 having an at least partially curved portion
Further, the cover window 20 may be a curved shape type window 20 having a shape curved with respect to one axis passing through a central portion of the cover window 20. Here, the curved shape may include all curved or folded shapes. At this time, the cover window 20 may be attached to the window attachment part 200 such that an attachment surface of the cover window 20 faces the panel 10. At this time, in the window attachment member 200, the surface facing the suction surface of the cover window 20 using vacuum suction may be temporarily fixed.
The panel support member 100 may be disposed to face the window attachment member 200 and support the panel 10.
At this time, the panel support member 100 may support the panel 10 such that the attachment surface of the panel 10 faces the cover window 20 by supporting a surface facing the attachment surface of the panel 10. At this time, the gap adjusting part 500 may adjust the gap between the window attaching part 200 and the panel supporting part 100 by moving at least one of the window attaching part 200 and the panel supporting part 100. Accordingly, the attachment of the cover window 20 and the panel 10 may be brought into contact with each other by adjusting a gap between the window attachment part 200 to which the cover window 20 is attached and the panel support part 100 supporting the panel 10, and the cover window 20 and the panel 10 may be laminated as will be described below.
At this time, the exposed surface of the cover window 20 or the panel 10 may be provided with an adhesive surface composed of an adhesive material for laminating the cover window 20 and the panel 10. At this time, the bonding surface may be bonded by an optical transparent resin (optical CLEAR RESIN, OCR), an optical transparent adhesive (OCA), or the like. Such an adhesive surface may be formed on, for example, the exposed surfaces of the cover window 20 and/or the panel 10 facing each other and waiting in a state protected by the heterogeneous paper (heterogeneous paper) or the like before lamination, and may be exposed when the heterogeneous paper is removed for lamination. Because of the optical bonding material, the OCR or OCA may have a light transmittance of at least about 90% and may prevent image quality from being unclear due to light reflection, but the exemplary embodiment is not limited thereto.
Fig. 2 is a view showing a state in which an elastic pressing member presses a panel according to an exemplary embodiment, and fig. 3 is a view showing a state in which a diaphragm presses the panel according to an exemplary embodiment.
Referring to fig. 2 and 3, in the window panel laminating apparatus according to an exemplary embodiment, the panel supporting part 100 may include: a body member 110 provided with a flow passage 112 to which the fluid F can be supplied; an elastic pressing member 130 provided on the body member 110 and transmitting elastic force to the panel 10; and a diaphragm 120 surrounding the body member 110 and inflated by the fluid F supplied through the flow channel 112, and may press the panel against the cover window 20.
At this time, the panel 10 may be partially pressed against the cover window 20 by the elastic pressing member 130 and secondarily pressed by the diaphragm 120.
The diaphragm 120 may be an elastic membrane that may be provided in a shape including a space capable of containing the fluid F, and the diaphragm 120 may be expandable when the fluid F is supplied to the space. Further, the adhesive surface of the panel 10 may be pressed to the adhesive surface of the cover window 20 by fixing the panel 10 to the outer surface of the diaphragm 120. In particular, when using a membrane 120 capable of adjusting its degree of expansion, the flexible panel 10 can be pressed as well to the cover window 20 exhibiting various shapes and curvatures without variations in the apparatus. Here, the diaphragm 120 may be composed of, for example, a heat-curable silicone such as high-consistency rubber (high consistency rubber, HCR) and swelled by the fluid F, and may be used as long as it can be restored to an original shape by recovering the fluid F, and the exemplary embodiment is not limited thereto.
At this time, in order to improve the accuracy of the pressurization of the panel 10, a portion of the panel 10 may be preferentially pressed against the cover window 20 by disposing the elastic pressing member 130 on the upper side (including all the inside and outside of the diaphragm 120) on the diaphragm 120. Accordingly, since the cover window 20 and the panel 10 are partially laminated when the entire surface of the panel 10 is pressed, the panel 10 may not shake, a uniform pressing force may be provided over the entire surface, and accuracy may be improved. Further, when a portion of the panel 10 is laminated on the curved surface area of the cover window 20 by using the elastic pressing member 130, the curved surface area is preferentially pressed, and thus, incomplete attachment of the panel 10 can be prevented in the curved surface area, and the accuracy of lamination can be improved.
Here, the elastic pressing member 130 may be pressed by the gap adjusting member 500, and press a portion of the panel 10. At this time, in order to prevent the panel 10 from being damaged due to a sudden impact, the elastic pressing member 130, which is composed of a material capable of reducing the impact, may be used to press the panel 10 while transmitting elastic force to the panel 10. Accordingly, the elastic pressing member 130 may be provided by using an elastically deformable material such as silicone rubber, but the exemplary embodiment is not limited thereto.
Meanwhile, the diaphragm 120 is an expandable elastic film such that the elastic pressing member 130 is located on the diaphragm 120, and in order to press the panel 10, the body member 110, which is composed of a material exhibiting higher hardness than the diaphragm 120, may support the elastic pressing member 130. Accordingly, the elastic pressing member 130 may be fixed on the body member 110, and the elastic pressing member 130 may press the panel 10 against the cover window 20.
At this time, the body member 110 is located inside the diaphragm 120, and thus, the body member 110 may include a flow channel 112 capable of supplying the fluid F into the diaphragm 120. Thus, the diaphragm 120 may expand due to the supplied fluid F and may press the panel 10 against the cover window 20.
Accordingly, the elastic pressing member 130 located on the body member 110 may first press the panel 10 against the cover window 20. Further, since the fluid F is supplied from the flow passage 112 provided to the diaphragm 120, the panel 10 fixed to the panel support member 100 can be secondarily pressed against the cover window 20. Thus, accurate lamination can be provided by sequentially provided pressurization.
The upper surface of the elastic pressing member 130 may be disposed at a position corresponding to a region having at least a partially curved portion and be composed of a curved surface.
The elastic pressing member 130 may have an upper portion configured by a curved surface so as to stably transmit elastic force to the panel 10 while being elastically deformed. In particular, when such a curved surface is provided to cover the window 20 so as to correspond to the shape of the region having the at least partially curved portion, the elastic pressing member 130 may laminate the curved surface region of the cover window 20, and then laminate the remaining plane when the panel 10 is pressed. Therefore, a phenomenon that the gap between the panel 10 and the cover window 20 may not be brought into close contact with each other and floated due to incomplete pressurization can be prevented, and precise lamination can be provided.
Meanwhile, the cover window 20 may be bent with respect to an axis passing through a central portion of the cover window 20.
In general, many curved-surface type display devices have shapes, each of which generally has a flat center portion and a peripheral edge in which only a portion is curved, and a technique capable of laminating a flexible panel to a cover window having such a shape has been developed. However, as the curvature of the curved surface area increases, the radius of curvature decreases. Thus, in order to laminate the panel 10 onto the cover window 20 forming a curvature in a narrow region, a curved surface region having a smaller width and a larger distance may be pressed. At this time, the area may not be sufficiently pressed by the conventional technique alone, the cover window and the panel may not be completely laminated, and a floating phenomenon may occur. Thus, when the area is pressed with a large pressure so as to provide sufficient pressurization, the pressed panel may also be damaged. Thus, special techniques capable of providing sufficient pressurization to the narrow curved surface region may be required.
The curved surface area of the cover window 20 according to an exemplary embodiment may be configured to curve, for example, with respect to one axis so as to assume a shape of higher curvature. Furthermore, the screen member may be arranged multilaterally over the entire curved surface area connecting two planes facing each other in this particular shape.
In this case, the curved surface area may exhibit a high curvature in order to connect two mutually opposite planes, and the technique of being able to laminate a cover window exhibiting a particular curved surface thus has a great advantage: the techniques may also be used later to develop display devices having various designs.
However, in the curved surface region which may be disposed between the flat surfaces with a small width, the panel 10 may not be entirely pressed against the cover window 20, and a floating phenomenon and bubbles may occur between the cover window 20 and the panel 10. Thus, more accurate lamination techniques may be required.
Fig. 4 is a view showing an operation of the elastic pressing member according to an exemplary embodiment, fig. 4 (a) shows the elastic pressing member before pressing the panel, and fig. 4 (b) shows the elastic pressing member when pressing the panel.
Referring to fig. 4, in the window panel laminating apparatus according to an exemplary embodiment, the elastic pressing member may include: an elastic body member 131 composed of an elastic material; and a rigid body member 132 at least partially surrounded by the elastic body member 131 and composed of a material having a higher hardness than the elastic body member 131.
Thus, when the cover window 20 has a special shape in which a narrow curved surface is formed, it may be necessary to apply more precise pressurization to the curved surface area of the cover window 20, and the elastic pressing member 130 should be able to press the exact position so as to be able to precisely press the curved surface area. However, considering that the panel 10 is not damaged, the elastic pressing member 130 may exhibit a low elastic modulus, and when the elastic pressing member 130 presses the panel 10, the curved surface of the elastic pressing member 130 may be bent while being pressed. Therefore, the elastic pressing member 130 may be deformed to such an extent that it cannot cope with the curved shape of the cover window 20. Further, the elastic pressing member 130 may not press the exact position when being inclined, and may not fully press the curved surface region of the cover window 20.
Accordingly, the elastic pressing member 130 may include: an elastic body member 131 capable of elastic deformation; and a rigid body member 132 that reinforces the strength of the elastic body member 131 so that the elastic body member 131 is not excessively deformed and is composed of a hard material so as to fix the position of the elastic body member 131. Accordingly, the elastic body member 130 may press the panel 10 while being elastically deformed without damaging the panel 10. Further, the elastic pressing member 130 can be prevented from failing to press the accurate position due to the occurrence of excessive deformation or tilting of its shape, and the accurate position in the curved surface area can be accurately pressed.
Meanwhile, shore hardness (shore a) is expressed as hardness by the magnitude of rebound upon impact of one object with another object, and the magnitude of rebound due to the impact corresponds to the work consumed by elastic deformation of the impacting object.
Accordingly, the elastic body member 131 may optimally have a shore hardness (shore a) of about 20 to 40, and the elastic pressing member 130 may mitigate abrupt impact when the elastic pressing member 130 presses the panel 10. Accordingly, damage to the panel 10 can be prevented, and the panel 10 can be pressed while the elastic force can be transmitted by the restoring force to restore to the original shape after being at least partially pressed. Here, silicone rubber such as liquid silicone rubber (liquid silicone rubber, LSR) may be used for the elastomer member 131, but the exemplary embodiment is not limited thereto.
The elastic pressing member 130 may be excessively hard when exhibiting a shore hardness (shore a) exceeding about 40, and the elastic pressing member 130 may be hardly deformed when the gap between the window attaching member 200 and the panel supporting member 100 is reduced and the elastic pressing member 130 is at least partially pressed. Accordingly, a stronger pressure may be required to press the panel 10, the elastic pressing member 130 may be further pressed by the gap adjusting member 500, and the panel 10 may be damaged when the stronger pressure is applied to the panel 10.
At this time, when the shore hardness (shore a) of the elastic pressing member 130 is less than about 20, the elastic pressing member 130 may be too soft, may not be easily restored to the original shape after deformation, and may not exhibit an elastic restoring force for pressing the panel 10.
Fig. 5 is a view illustrating operations of the elastic pressing member and the body member according to an exemplary embodiment.
Referring to fig. 5, the elastic pressing member 130 extends in one direction, and the rigid body member 132 may have an axial shape extending parallel to the one direction.
Such a rigid body member 132 may be provided in a shaft shape in consideration of the shape of the elastic pressing member 130 extending in one direction, and the shaft may be provided at a position corresponding to the bending region of the cover window 20. Therefore, even when the elastic pressing member 130 presses the panel in the narrow region, the position pressed by the elastic pressing member 130 can be accurately provided.
At this time, the rigid body part 132 should exhibit a shaft shape and the strength of the rigid body part 131 should be reinforced, and thus, the rigid body part 131 should have a high strength and the rigid body part can maintain the high strength even when it is preferably manufactured in a thin shape using bearing steel such as SUJ2 and a material such as SUS 304.
Here, the body part 110 may further include fastening parts 111 fastened to both ends of the rigid body part 132 and fixing the elastic pressing part 130.
In order to fix the position of the elastic pressing member 130, a method of attaching the elastic pressing member 130 to the upper surface of the body member 110, for example, may be used, but in this case, there may be a problem in that the fluid F may not be supplied to the upper surface of the body member 110. Accordingly, both ends of the shaft-like rigid body part 132 are fastened to the body part 110, and thus, the position of the elastic pressing part 130 can be fixed, and accurate pressurization can be provided.
At this time, the fastening members 111 having shapes corresponding to both ends of the rigid body member 132 may be provided at the upper end of the main body member 110 as shown in fig. 5, for example. Furthermore, when such fastening member 111' is further provided to an assembly attachable to/detachable from the main body member 110, it is convenient to replace the elastic pressing member 130 with a new assembly when the service life of the elastic pressing member 130 including the elastic body member 131 and the rigid body member 132 is reached.
Meanwhile, the central axis of the rigid body part 132 may be disposed to be positioned at less than half the height of the elastic pressing part 130.
When the position where the rigid body part 132 is provided is set too high, the deformation of the elastic body part 131 may be disturbed, the elastic body part 131 may not be elastically deformed, and the elastic force for pressing the panel 10 may not be sufficiently transmitted. Further, when the position is set too low, the elastic body member 131 may be excessively deformed, the reinforcing effect due to the rigid body member 132 may not be exhibited, and an error due to tilting may be caused.
Therefore, in view of the advantages, the position of the rigid body 132 may be set such that the central axis of the shaft is preferably positioned below half the total height of the elastic pressing member 130. Thus, the rigid body 132 can support the position of the elastic pressing member 130, can strengthen the elastic member 131, and can provide accurate lamination.
Meanwhile, such an elastic pressing member 130 may be provided with: a curved surface member forming a curved surface on an upper portion thereof; and a linear member having a shape with a constant thickness on a lower portion thereof to support the curved member and extending in a height direction thereof, and the rigid body member 132 may be provided to the linear member.
At this time, when the rigid body part 132 is positioned at the curved surface part, the elastic deformation of the elastic pressing part 130 may be disturbed, and it may not be easy to structurally support the curved surface part. Accordingly, the rigid body part 132 is positioned on the linear part of the elastic pressing part 130, and thus can support the position of the curved surface part, and the curved surface of the elastic pressing part 130 is curved, and thus errors in the curved surface shape of the cover window can be prevented.
Fig. 6 is a view showing a body part according to an exemplary embodiment, fig. 6 (a) shows a state in which injection ports are provided on an upper surface and a side surface, fig. 6 (b) shows a state in which injection ports are provided on the same side surface at different heights, and fig. 7 shows a state in which an upper portion of a diaphragm 120 according to an exemplary embodiment is expanded.
Referring to fig. 6 and 7, in the window panel laminating apparatus according to the exemplary embodiment, a plurality of flow channels 112 may be provided, the body part 110 may further include a plurality of injection ports 113 communicating with the plurality of channels 112, and at least a portion of the plurality of injection ports 113 may be positioned at mutually different positions.
Meanwhile, the body member 110 may include a flow passage 112 capable of supplying the fluid F to the inner surface of the diaphragm 120, and an injection port 113 as an opening portion of the body member 110 may be provided at an end of the flow passage 112. At this time, the ejection ports 113 may be disposed at mutually different heights, and when the fluid F is supplied to the ejection ports 113 at mutually different heights, the fluid F may be supplied at mutually different heights. Thus, the locations at which the diaphragm 120 is selectively expanded may be set to be different from each other. For example, after a portion of the upper portion of the diaphragm 120 is pre-expanded, the lower portion or the entire surface of the diaphragm 120 is expanded so that the panel 10 can be accurately laminated onto the cover window 20.
Here, a fluid supply part (not shown) for supplying the fluid F to the plurality of injection ports 113 may be further provided, and the fluid supply part (not shown) may sequentially supply the fluid F to the plurality of injection ports 113 according to the height of the injection ports 113.
Further, the body member 110 has a wall shape, and the plurality of injection ports 113 may include: an upper surface ejection port 113 provided on an upper surface of the body member 110; and a side surface ejection port 113 provided to a side surface of the body member 110.
A plurality of such flow channels 112 may be provided, and the flow channels 112 are provided to each of the injection ports 113 having mutually different heights, and thus, the injection ports 113 having mutually different heights may be individually controlled.
The ejection ports 113 may be formed in the upper surface and the side surface as in (a) of fig. 6 and in the side surface at mutually different heights as in (b) of fig. 6, but it is sufficient that the fluid F may be sequentially supplied at mutually different heights, and the shape of the ejection ports is not particularly limited thereto.
Here, a fluid supply part (not shown) may be connected to the flow channel 112 and supply the fluid F to the diaphragm 120. For example, the fluid supply means may also be configured as a fluid supply apparatus capable of supplying the fluid F at a constant volume and/or constant pressure of a hydraulic pump or the like, but the exemplary embodiment is not limited thereto, and thus, the supply pressure of the fluid F may be controlled, and recovery of the supply fluid may also be allowed.
At this time, in the method of sequentially supplying the fluid F according to the heights of the injection ports 113, for example, the injection ports 113 positioned at mutually different heights may be connected to a fluid supply part (not shown) through mutually different valves (not shown), and the supply of the fluid F to the injection ports 113 having mutually different heights may be individually adjusted. Furthermore, the ejection ports 113 positioned at the same height may be adjusted by the same valve (not shown), and the ejection of the fluid F may be performed simultaneously at the same height.
Thus, the supply of the fluid F is sequentially controlled according to the height, and thus, the diaphragm 120 above the panel support member 100 is previously expanded as in fig. 7, and a portion of the panel 10 may be fixed by the first press. Further, the lower portion of the panel supporting member 100 or the entire surface of the panel 10 can be pressed without shaking, and the occurrence of bubbles between the cover window 20 and the panel 10 is prevented, and thus, lamination of the cover window 20 and the panel 10 can be stably and accurately provided.
If the ejection port 113 is provided at the upper surface of the body member 110, and when the elastic pressing member 130 is brought into direct contact with the upper surface of the body member 110, it may not be easy to eject the fluid F from the ejection port 113. Accordingly, as shown in fig. 5, the elastic pressing members 130 may be provided on the body member 110 in a spaced-apart shape using the fastening members 111 or the like, but it is sufficient to provide a gap with the elastic pressing members 130 on the body member 110, and the shape is not particularly limited. At this time, in the spaced distance, when the upper ends of the elastic pressing member 130 and the body member 110 are not completely integrated, even when the upper ends of the elastic pressing member 130 and the body member 110 are disposed to be almost in contact with each other, a slight gap may exist. Accordingly, the fluid F may be supplied to the gap, and the elastic pressing member 130 and the body member 110 may be regarded as being spaced apart from each other. Accordingly, the fluid F may be supplied from the injection port 113 provided at the upper surface of the body part 110 and expand the upper portion of the diaphragm 120. At this time, the fluid F injected to the upper portion of the diaphragm 120 reaches the elastic pressing member 130, and may be more uniformly injected, and the injection pressure may be reduced. However, the expansion of the diaphragm 120 due to the fluid F is an expansion for further providing the pressurization to a portion of the panel 10 after the first pressurization occurs by the elastic pressing member 130, and thus, a pressure sufficient to press a portion of the panel 10 may be provided.
Meanwhile, the upper surface injection port 113 may be formed in a central portion of the body part 110, and the side surface injection port 113 provided at one side surface of the body part 110 may be symmetrically provided with respect to a central portion of an upper portion of the upper surface.
The upper surface injection port 113 may be provided at the upper surface of the body part 110, and since the upper surface injection port 113 is provided at the upper surface of the body part 110 and the side surface injection port 113 is provided at the shape of the side surface, the upper and lower portions of the diaphragm 120 may be sequentially expanded. At this time, when the upper surface injection port 113 and the side surface injection port 113 are each asymmetrically disposed, the diaphragm 120 may expand in an asymmetric shape. Further, when such asymmetric expansion occurs in a state in which a portion of the upper side surface of the diaphragm 120 has been expanded, a defect such as a bubble may occur due to irregular expansion between the cover window 20 and the panel 10.
Accordingly, the upper surface injection port 113 may be formed in a central portion of the upper surface of the body part 110, and the side surface injection port 113 may be symmetrically disposed at one side surface of the body part 110 with respect to the central portion. Accordingly, the diaphragm 120 can be uniformly inflated, and the panel 10 can be pressed without occurrence of bubbles between the cover window 20 and the panel 10.
Further, the side surface ejection port 113 may include: a first side surface ejection port 113 provided at one side surface of the body member 110; and a second ejection port 113 provided at a position corresponding to the first side surface ejection port 113 on the other side surface facing the one side surface.
Thus, when the side surface ejection ports 113 provided at the other side surface facing one side surface are symmetrically provided at the ejection ports 113 in the opposite surface, the diaphragm 120 can be provided to expand further symmetrically. Accordingly, the diaphragm 120 can be further uniformly inflated, and the panel 10 can be stably pressed without occurrence of bubbles between the cover window 20 and the panel 10.
Fig. 8 is a cross-sectional view illustrating a diaphragm according to an exemplary embodiment.
Referring to fig. 8, in the window panel laminating apparatus according to the exemplary embodiment, the thickness of the elastic film constituting the diaphragm 120 may be greater at the lower side than at the upper side of the panel supporting member 100.
Meanwhile, in order to first expand the upper portion of the diaphragm 120, the injection ports 113 may be provided to have mutually different heights, but are provided such that the thickness of the diaphragm 120 is different according to its position, and the expansion speed of the diaphragm 120 is different according to its position. Accordingly, the diaphragm 120 may be disposed such that the thickness t2 of the lower portion of the panel support member 100 is greater than the thickness t1 of the upper side of the panel support member 100. Thus, deformation of the diaphragm 120 may be easier on the upper side of the panel support member 100 (which indicates a relatively smaller thickness) and may expand earlier due to a smaller amount of fluid F. Accordingly, the panel 10 contacting the diaphragm 120 at the upper side of the panel supporting member 100 can be pressed earlier, and a starting point of pressing is set. Accordingly, the panel 10 can be prevented from shaking during pressurization, and stable pressurization can be provided.
Further, when the elastic films having the same thickness are expanded, shaking may occur due to the shape of the elastic films, and when the panel 10 is pressed by irregular expansion, bubbles may occur in a space where the cover window 20 and the panel 10 are not completely laminated. At this time, when deformation is applied so that the thicknesses of the elastic films can be set to be different from each other, the shaking phenomenon can be reduced, and the elastic films can be uniformly expanded, and the elastic films can stably press the panel 10.
At this time, the diaphragm 120 may be composed of a material having a higher shore hardness (shore a) than the elastic pressing member 130.
Meanwhile, the diaphragm 120 should be inflated by the fluid F and press the panel 10, and thus, a greater deformation than the elastic pressing member 130 may be required, and the diaphragm 120 may be composed of a material exhibiting a higher shore hardness (shore a) than the elastic pressing member 130. Thus, the diaphragm 120 expands due to the fluid F, can press the panel 10 against the cover window 20, and can be used when returning to the original shape after the pressurization is completed.
The diaphragm 120 may optimally exhibit a shore hardness (shore a) of about 50 to 70, expand by supplying the fluid F, press the panel 10, and recover the original shape when the fluid F is recovered. Further, the diaphragm 120 restored to the original shape can thus be reused to press the panel 10.
However, the septum 120 may excessively soften when exhibiting a shore hardness (shore a) of less than about 50. Thus, the diaphragm 120 may not easily return to the original shape after expanding to press the panel 10, and when the fluid F is recovered after the pressurization is completed, it may not be easy to reuse the diaphragm 120 for the next lamination. Furthermore, when such restoration is incomplete, it may be necessary to replace the diaphragm 120 at each lamination.
In addition, to have a high resilience, the diaphragm 120 may be excessively hardened with a shore hardness (shore a) of greater than about 70. Thus, by supplying the fluid F, the diaphragm 120 may not be easily inflated, and it may be necessary to supply the fluid F at a relatively high pressure, and the cover window 20 and the panel 10 may be damaged due to the relatively high pressure.
Meanwhile, the panel fixing member 300 fixing the panel 10 along the outer surface of the panel supporting member 100 may be further provided.
At this time, the panel 10 is further provided with a panel fixing member 300, the panel fixing member 300 may be provided by being adhered to the carrier sheet 30, and the panel fixing member 300 presses the carrier sheet 30 and fixes the panel 10 along the outer surface of the panel supporting member 100.
The panel 10 is supported on the panel support member 100, and lamination may be performed. At this time, when the panel fixing member 300 for fixing the panel 10 to the panel supporting member 100 is provided, the panel may be more firmly mounted than in the case of being simply supported by the panel supporting member 100. However, when the panel 10 is directly fixed to the panel support member 100, physical damage may be caused to the display surface of the panel 10.
Accordingly, the carrier sheet 30 capable of temporarily attaching the panel 10 can be used for such fixing, and the panel 10 can be fixed to the panel fixing member 100 by fixing the carrier sheet to which the panel 10 is attached to the panel supporting member 100 without causing damage to the display surface of the panel 10. Here, for example, a roller may be used for the panel fixing member 300, but the embodiment is not particularly limited thereto as long as the carrier sheet 30 can be pressed and its position is fixed.
Meanwhile, the panel fixing member 300 not only fixes the panel 10 and the carrier sheet from shaking, but also fixes the panel 10 along the outer surface of the panel supporting member 100, and thus, the panel may be disposed to conform to the shape and size of the space formed by the attachment surface of the cover window 20. Accordingly, a phenomenon in which at least a portion of the panel 10 cannot be inserted into the space can be prevented, the panel 10 can be accurately pressed, and more accurate lamination can be provided.
Accordingly, the panel fixing member 300 may fix the panel 10 along the shape of the outer surface of the panel supporting member 100 (the inner surface covering the window 20). At this time, the jigs may pull both ends of the carrier sheet 30, and the carrier sheet 30 may not wrinkle when the panel 10 is fixed to the panel support member 100. Here, it is sufficient in the window panel laminating apparatus of the present disclosure that the jigs can fill both ends of the carrier sheet 30 at a height smaller than the upper end of the panel supporting member 100 and fix them to any bottom surface of the panel supporting member 100, and the jigs can be regarded as identical within a functionally similar range.
At this time, for example, a tacky UV adhesive sheet may be used for the carrier sheet 30, and when the carrier sheet 30 is irradiated with ultraviolet rays after the action of attaching the panel 10 is completed, the adhesiveness of the carrier sheet 30 may be lost, and the carrier sheet may be removed from the panel 10. Such carrier sheet 30 is sufficient to temporarily fix the panel 10, and the embodiment is not particularly limited thereto.
Here, with UV irradiation, the cover window 20 is separated from the window attachment member 200, and UV may be emitted to the carrier sheet 30 above the cover window 20. Alternatively, the panel support member 100, the panel 10, and the carrier sheet 30 are separated, and UV may be emitted to the exposed surface of the carrier sheet 30.
Fig. 9 is a flowchart illustrating a window panel lamination method according to another embodiment of the present invention.
Referring to fig. 9, a window panel laminating method according to another exemplary embodiment will be described, and matters overlapping the above-described portions with respect to the window panel laminating apparatus according to the exemplary embodiment will be omitted. A window panel lamination method according to another exemplary embodiment may include: attaching a cover window having an at least partially curved portion (S100); fixing a panel to a panel supporting member including an elastic pressing member for transmitting elastic force to a cover window and a diaphragm inflated by a fluid (S200); reducing a gap between the window attaching part and the panel supporting part, and pressing at least a portion of the panel against the cover window by the elastic pressing part for the first time (S300); supplying a fluid to expand the diaphragm, again pressing the panel against the cover window (S400); and separating the window attachment member and the panel support member from each other (S500).
A window panel laminating apparatus according to an exemplary embodiment may include: a window attachment member 200 to which the cover window 20 is attached having an at least partially curved portion; a panel support member 100 facing the window attachment member 200; and a gap adjusting part 500 for adjusting a gap between the window attaching part 200 and the panel supporting part 100.
At this time, the panel supporting member 100 may include: a body member 110, the body member 110 comprising a flow channel 112 to which a fluid F may be supplied; an elastic pressing member 130 provided on the body member 110 and transmitting elastic force to the panel 10; and a diaphragm 120 surrounding the body member 110 and inflated by the fluid F supplied through the flow channel 112, and the panel support member may press the panel 10 against the cover window 20.
First, a cover window having an at least partially curved portion is attached to a window attachment member (S100). The cover window 20 may be attached to the window attachment member 200 such that an attachment surface of the cover window 20 faces the panel 10, and the window attachment member 200 may be fixed such that a surface thereof facing an adsorption surface of the cover window 20 is temporarily attached using vacuum adsorption or the like.
Next, the panel is fixed to the panel supporting member (S200). The panel support member 100 may be disposed to face the window attachment member 200 and support the panel 10. Further, the panel support member 100 may include an elastic pressing member 130 and a diaphragm 120. At this time, the panel support member 100 may support the panel 10 such that the attachment surface of the panel 10 faces the cover window 20 by supporting a surface opposite to the attachment surface of the panel 10.
Accordingly, the gap between the window attachment member 200 to which the cover window 20 is attached and the panel support member 100 that supports the panel 10 is adjusted so that the attachment surface of the cover window 20 and the attachment surface of the panel 10 can be brought into contact with each other. At this time, the gap between the window attachment member 200 and the panel support member 100 may be adjusted using the gap adjustment member 500, and the gap between the window attachment member 200 and the panel support member 100 may be adjusted by moving at least any one of the window attachment member 200 and the panel support member 100.
Subsequently, the elastic pressing member presses a portion of the panel against the cover window for the first time (S300). The elastic pressing member 130 may be at least partially pressed while reducing the gap between the window attachment member 200 and the panel support member 100. Accordingly, the elastic pressing member 130 may press a portion of the panel 10 against the cover window 20 for the first time while being elastically deformed.
Further, the panel is pressed again by supplying fluid to expand the diaphragm (S400). Fluid may be supplied to the diaphragm and at least a portion of the diaphragm may be inflated. Thus, the total area of the panel may be pressed against the cover window.
Subsequently, the window attachment member and the panel support member are separated from each other (S500). At this time, the gap between the window attachment member 200 and the panel support member 100 may be adjusted using the gap adjustment member 500, and the gap between the window attachment member 200 and the panel support member 100 may be adjusted by moving at least any one of the window attachment member 200 and the panel support member 100.
In an exemplary embodiment, a portion of the panel 10 is previously pressed using the elastic pressing member 130, and then the diaphragm 120 is inflated while supplying the fluid F to completely press the panel 10. Thus, even the curved surface can be pressed uniformly, and even during pressing of the entire surface, uniform lamination can be provided without shaking.
Further, disposing the panel to be adhered on the carrier sheet and fixing the panel to the panel supporting member (S200) may include: supporting a carrier sheet at an upper end of the panel support member; pulling both ends of the carrier sheet; and the panel securing member secures the carrier sheet along an outer surface of the panel support member.
The carrier sheet 30 may be pressed using the panel fixing member 100 so that the panel 10 may be fixed along the outer surface of the panel supporting member 100. At this time, in the panel fixing member 100, for example, a roller may be used, which is fastened to the extension arm and may move when the arm swings about the rotation axis, but the embodiment is not particularly limited thereto.
For example, when the panel 10 is directly fixed to the panel support member 100 using a fixing member or the like, damage may be caused to the display surface of the panel 10, and when it is desired to press the panel 10 against the cover window 20, interference may be generated by the fixing member fixing the panel 10. Accordingly, the panel 10 may be temporarily adhered to the carrier sheet 30, and the carrier sheet 30 is fixed to the panel support member 100, and thus, the panel 10 may be fixed to the panel support member 100.
At this time, for example, a tacky UV adhesive sheet may be used for the carrier sheet 30, and when the carrier sheet 30 is irradiated with ultraviolet rays after the action of attaching the panel 10 is completed, the adhesiveness of the carrier sheet 30 may be lost, and the carrier sheet may be removed from the panel 10. Such carrier sheet 30 is sufficient to temporarily fix the panel 10, and the embodiment is not particularly limited thereto.
Here, a portion of the carrier sheet 30 to which the panel 10 is attached may be supported at an upper end of the panel support member 100, and for example, a pulling member such as a jig may be used so that both ends of the carrier sheet 30 may be maintained in a pulled state.
Accordingly, a carrier sheet that loses adhesiveness through a curing step after separating the window attachment member and the panel support member from each other (S500) may be further provided.
The carrier sheet that is lost to attachment by the curing step may further comprise: separating the window fixing member and the panel supporting member from each other by the gap adjusting member; an exposed surface of the carrier sheet adhered to the other surface facing the one surface with UV irradiation using a UV lamp in a state where the one surfaces of the cover window and the panel are attached to each other; and removing the UV sheet, which has lost adhesion due to UV irradiation, from one surface of the panel.
Here, with UV irradiation, the cover window 20 is separated from the window attachment member 200, and UV may be emitted to the carrier sheet 30 above the cover window 20. Alternatively, the panel support member 100, the panel 10, and the carrier sheet 30 are separated, and UV may be emitted to the exposed surface of the carrier sheet 30.
Further, the elastic pressing member may be performed to press a portion of the panel against the cover window for the first time (S300), so that the elastically deformed elastic pressing member transmits an elastic force to the panel.
The gap between the window attachment member 200 and the panel support member 100 may be reduced by the gap adjustment member 500, and when the gap is further reduced after the gap is reduced and the cover window 20 and the panel 10 are brought into contact with each other, the elastic pressing member 130 may be at least partially pressed. At this time, the elastic pressing member 130 may transmit elastic force to the panel 10 while being elastically deformed, a portion of the panel 10 may be partially pressed against the curved surface region of the cover window 20 by the transmission of elastic force, and accurate lamination may be provided in the curved surface region.
Further, pressing the panel against the cover window again may be performed (S400) such that the lower portion of the diaphragm expands after the upper portion of the diaphragm expands.
Here, the diaphragm 120 may have, for example, a wall body shape such that the panel 10 is fixed along an outer surface of the diaphragm 120, and such that the diaphragm 120 may expand due to the fluid F supplied into the wall body shape.
The upper side of the diaphragm 120 is pre-expanded and presses a portion of the panel 10 against the cover window 20, and then the entire surface of the panel 10 may be pressed against the cover window 20 when the lower side of the diaphragm is expanded. Thus, accurate lamination can be provided in the curved surface region of the cover window 20, and air bubbles can be prevented from occurring between the cover window 20 and the panel 10.
At this time, a plurality of flow channels 112 may be provided, the body part 110 may further include a plurality of injection ports 113 communicating with the plurality of flow channels 112, and at least a portion of the plurality of injection ports 113 may be positioned at mutually different positions.
In addition, a fluid supply part (not shown) for supplying the fluid F to the plurality of injection ports 113 may be further provided, and the fluid supply part (not shown) may sequentially supply the fluid F to the plurality of injection ports 113 according to the height of the injection ports 113.
Expanding the membrane by the fluid and then pressing the panel to the cover window (S400) may include: the fluid supply member supplies fluid to the ejection port at the high position and expands the diaphragm above the panel support member; and the fluid supporting member supplies the fluid to the ejection port at a height smaller than the ejection port at the high position, and expands the entire surface of the diaphragm.
Further, in expanding the diaphragm by the fluid and then pressing the panel into the cover window (S400), the thickness of the elastic film constituting the diaphragm 120 may be set to be greater in the lower side than in the upper side of the panel support member 100. Accordingly, since the diaphragm 120 is easily expanded at the upper side of the panel support member 100, fluid supply may be performed such that the upper side is first expanded when the fluid F is supplied.
Accordingly, the panel 10 may be sequentially pressed from the upper curved region by the diaphragm 120, the occurrence of bubbles between the cover window 20 and the panel 10 may be prevented by pressing the irregular positions, and the panel 10 may be precisely pressed against the cover window 20.
Thus, in the present disclosure, the elastic pressing member and a portion of the cover window may be pressed first by reducing a gap between the window attaching member and the panel supporting member, and the entire region of the panel may be pressed second by expanding the diaphragm. Thus, an accurate pressurization can be provided to a curved surface area that needs to be accurately pressurized, the entire area can be pressurized without shaking, and the cover window and the flexible panel having at least partially curved portions can be firmly laminated without defects. Further, the shaft-like rigid body member is provided to the elastic pressing member, and the position of the elastic body member is fixed to the main body member, and therefore, during the first pressing using the elastic pressing member, excessive deformation or tilting of the elastic body member can be prevented, and an accurate position can be pressed. Furthermore, the flexible panel is pressed using a membrane that can be used for any type of cover window, so that a cover window with various curvatures can be provided with high accuracy lamination without replacement with new additional equipment. At this time, a carrier sheet for fixing the panel and a panel fixing member for fixing the panel to the panel supporting member are used, so that the panel can be fixed to the panel supporting frame without causing damage to the screen member of the panel, and the panel can be pressed against the cover window without error. Further, in the window panel laminating method according to another exemplary embodiment, when the panel is pressed against the cover window, the panel is sequentially pressed from the upper side to the lower side of the panel supporting member, so that air bubbles can be prevented from occurring between the cover window and the panel. A method in which the thickness of the diaphragm is set to be different according to the height thereof and the expansion speed is different at each height and/or a method in which the height of the ejection port for supplying the fluid to the diaphragm is set to be different and the fluid is sequentially supplied from the upper side may be used in such sequential lamination. Thus, sequential pressing can be provided entirely from the upper side of the membrane, and the flexible panel can be firmly laminated even by a high accuracy pressing method to the cover window having at least partially curved portions.
In the window panel laminating apparatus according to the exemplary embodiment, firstly, a portion of the cover window may be pressed with the elastic pressing member by reducing a gap between the window attaching member and the panel supporting member, and secondly, the entire region of the panel may be pressed by expanding the diaphragm. Thus, an accurate pressurization can be provided to a curved surface area that needs to be accurately pressurized, the entire area can be pressurized without shaking, and the cover window and the flexible panel having at least partially curved portions can be firmly laminated without defects.
Further, the shaft-like rigid body member is provided to the elastic pressing member, and the position of the elastic body member is fixed to the main body member, and therefore, during the first pressing using the elastic pressing member, excessive deformation or tilting of the elastic body member can be prevented, and an accurate position can be pressed.
Furthermore, the flexible panel is pressed using a membrane that can be used for any type of cover window, so that a cover window with various curvatures can be provided with high accuracy lamination without replacement with new additional equipment.
At this time, a carrier sheet for fixing the panel and a panel fixing member for fixing the panel to the panel supporting member are used, so that the panel can be fixed to the panel supporting frame without causing damage to the screen member of the panel, and the panel can be pressed against the cover window without error.
Further, in the window panel laminating method according to another exemplary embodiment, when the panel is pressed against the cover window, the panel is sequentially pressed from the upper side to the lower side of the panel supporting member, so that air bubbles can be prevented from occurring between the cover window and the panel. A method in which the thickness of the diaphragm is set to be different according to the height thereof and the expansion speed is different at each height and/or a method in which the height of the ejection port for supplying the fluid to the diaphragm is set to be different and the fluid is sequentially supplied from the upper side may be used in such sequential lamination. Thus, sequential pressing can be provided entirely from the upper side of the membrane, and the flexible panel can be firmly laminated even by a high accuracy pressing method to the cover window having at least partially curved portions.
The meaning of the term "on …" or "below …" as used in the above description includes the case of direct contact and the case of no direct contact but with the upper or lower portions facing positioned. Furthermore, the terms have been used in the following sense: it may be positioned not only facing the entire upper or lower surface, but also partially facing each other to face each other or to be in direct contact with the upper or lower surface at spaced apart locations.
So far, preferred exemplary embodiments have been shown and described, but the present disclosure is not limited to the above-described embodiments, and it should be understood by those skilled in the art to which the present disclosure pertains that various modifications and equivalent embodiments can be made according to the present disclosure without departing from the spirit and scope of the present disclosure. Accordingly, the technical scope of the present invention should be determined by the technical scope of the appended claims.

Claims (17)

1. A window panel laminating apparatus comprising:
a window attachment member to which a cover window including an at least partially curved portion is attached;
A panel support member facing the window attachment member and configured to support a panel; and
A gap adjustment member configured to adjust a gap between the window attachment member and the panel support member,
Wherein the panel support member includes:
a body member including a flow passage through which fluid is supplied;
An elastic pressing member provided on the body member and configured to transmit an elastic force to the panel; and
A diaphragm configured to surround the body member and expand due to the fluid supplied through the flow passage, whereby the panel support member presses the panel against the cover window,
Wherein the elastic pressing member has a curved upper surface and presses a portion of the panel against the cover window for the first time,
After the first pressing of the portion of the panel against the cover window, the membrane again presses the panel against the cover window,
The elastic pressing member includes:
an elastomer member composed of an elastic material; and
A rigid body member at least partially surrounded by the elastomer member and composed of a material having a higher hardness than the elastomer member, an
The central axis of the rigid body member is arranged to be positioned at less than half the height of the elastic pressing member.
2. The window panel laminating apparatus according to claim 1, wherein an upper surface of the curved surface of the elastic pressing member is provided at a position corresponding to a region of the cover window having the portion that is at least partially curved.
3. The window panel laminating apparatus of claim 1, wherein the cover window is curved with respect to an axis passing through a central portion of the cover window.
4. The window panel laminating apparatus according to claim 1, wherein the elastic pressing member extends in one direction, and the rigid body member has an axial shape extending parallel to the one direction.
5. The window panel laminating apparatus according to claim 4, wherein the main body member further comprises fastening members fastened to both ends of the rigid body member and configured to fix the elastic pressing member.
6. The window panel laminating apparatus according to claim 1, wherein:
The flow channels are arranged in a plurality;
the body member further includes a plurality of injection ports in communication with the plurality of flow channels; and
At least a portion of the plurality of injection ports are positioned at different heights from one another.
7. The window panel laminating apparatus according to claim 6, further comprising a fluid supply member configured to supply the fluid to the plurality of injection ports,
Wherein the fluid supply means sequentially supplies the fluid to the plurality of ejection ports according to the heights of the plurality of ejection ports.
8. The window panel laminating apparatus according to claim 6, wherein:
the body member having a wall body shape; and
The plurality of injection ports includes:
an upper surface injection port provided on an upper surface of the main body member; and
A side surface injection port provided at a side surface of the body member.
9. The window panel laminating apparatus according to claim 8, wherein:
the upper surface injection port is provided at a central portion of the upper surface of the main body member; and
The side surface injection port provided to the side surface of the main body member is provided symmetrically with respect to the center portion of the upper surface.
10. The window panel laminating apparatus according to claim 8, wherein the side surface spray port comprises:
a first side surface ejection port provided on one side surface of the main body member; and
A second side surface ejection port provided at a position corresponding to the first side surface ejection port facing the other side surface of the one side surface.
11. The window panel laminating apparatus according to claim 1, wherein a thickness of an elastic film constituting the diaphragm is greater at a lower side than at an upper side of the panel support member.
12. The window panel laminating apparatus according to claim 1, wherein the diaphragm is composed of a material having a higher shore hardness than the elastic pressing member.
13. The window panel laminating apparatus of claim 1, further comprising a panel securing member configured to secure the panel along an outer surface of the panel supporting member.
14. A window panel laminating method using the window panel laminating apparatus of any of claims 1-13, comprising:
Attaching a cover window having an at least partially curved portion to the window attachment member;
Fixing a panel to a panel support member including an elastic pressing member configured to transmit elastic force to the cover window and a diaphragm inflated by a fluid;
Reducing a gap between the window attachment member and the panel support member, and pressing a portion of the panel against the cover window for the first time by the elastic pressing member;
After the first pressing of the portion of the panel against the cover window, supplying the fluid to expand the diaphragm, again pressing the panel against the cover window; and
Separating the window attachment member and the panel support member from each other,
Wherein the elastic pressing member has a curved upper surface.
15. The window panel lamination method of claim 14, wherein the panel is configured to be adhered to a carrier sheet, and securing the panel to the panel support member comprises:
Supporting the carrier sheet at an upper end of the panel support member;
Pulling both ends of the carrier sheet; and
The carrier sheet is pushed by a panel fixing member and is fixed along an outer surface of the panel supporting member.
16. The window panel lamination method according to claim 14, wherein pressing the portion of the panel against the cover window for the first time by the elastic pressing member is performed such that the elastically deformed elastic pressing member transmits an elastic force to the panel.
17. The window panel lamination method of claim 14, wherein the re-pressing the panel against the cover window is performed such that an upper portion of the membrane expands and subsequently a lower portion of the membrane expands.
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KR10-2020-0039020 2020-03-31

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