Lamination equipment and method for manufacturing display devices

Abstract

Laminating equipment and a method for manufacturing a display device are provided. The laminating equipment includes a mounting frame and a pad disposed facing the mounting frame. The mounting frame may include a receiving groove defined by a bottom surface, a first side surface curved and extending from the bottom surface, and a second side surface curved and extending from the bottom surface. The pad may include a pressing surface facing the bottom surface, a first pad side surface curved from the pressing surface in a direction away from the mounting frame, a second pad side surface curved from the pressing surface in a direction away from the mounting frame, a connecting surface connecting the first pad side surface to the second pad side surface, and a recess recessed from the pressing surface, the connecting surface, and the first pad side surface.

Description

[0001] Cross-reference to related applications

[0002] This patent application claims priority to Korean Patent Application No. 10-2020-0047568, filed on April 20, 2020, and Korean Patent Application No. 10-2020-0052781, filed on April 29, 2020, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to lamination equipment for improving lamination process yield and methods for manufacturing display devices using the lamination equipment. Background Technology

[0004] The display device may include a window and a display panel. The window may be configured to protect the display panel, and the window and display panel may be attached to each other via an adhesive layer. A laminating apparatus may be used to laminate the window and display panel. Summary of the Invention

[0005] This disclosure provides lamination equipment exhibiting improved manufacturing yield and a method for manufacturing display devices.

[0006] An embodiment of the present invention provides a laminating apparatus, comprising: an assembly frame including a receiving groove defined by a bottom surface, a first side surface curved and extending from the bottom surface, and a second side surface curved and extending from the bottom surface; and a pad facing the assembly frame. The pad includes a pressing surface facing the bottom surface, a first pad side surface curved from the pressing surface in a direction away from the assembly frame, a second pad side surface curved from the pressing surface in a direction away from the assembly frame, a connecting surface connecting the first pad side surface to the second pad side surface, and a recess recessed from the pressing surface, the connecting surface, and the first pad side surface.

[0007] In one embodiment, the first side surface and the first pad side surface may extend in a first direction; and the second side surface and the second pad side surface may extend in a second direction intersecting the first direction.

[0008] In one embodiment, when viewed from the thickness direction of the pad, the width of the recess in the first direction may be greater than the width of the recess in the second direction.

[0009] In an implementation, the length of the first side surface in the first direction may be less than the length of the second side surface in the second direction.

[0010] In an implementation, the height of the first side surface may be less than the height of the second side surface.

[0011] In an embodiment, the laminating apparatus may further include a shape control section disposed adjacent to a first pad side surface of the pad, wherein the shape control section has a shape extending in a first direction.

[0012] In this embodiment, the rigidity of the shape control part can be stronger than that of the pad.

[0013] In an embodiment, the recess may include a recessed bottom surface, a first recessed side surface connected to the recessed bottom surface and the pressing surface, and a second recessed side surface connected to the recessed bottom surface and the first pad side surface, wherein the portions of the recess facing the first recessed side surface and the portions facing the second recessed side surface are open.

[0014] In an embodiment, the recess may include a first recess and a second recess, wherein the first recess and the second recess are recessed from the pressing surface and the first pad side surface, and the first recess and the second recess are spaced apart from each other in a first direction, and the first pad side surface is between the first recess and the second recess.

[0015] In one embodiment, the first recess and the second recess may have shapes that are symmetrical to each other with respect to a line of symmetry extending in a second direction.

[0016] In an embodiment, the distance between the first recess and the second recess in the first direction, and the sum of the width of the first recess in the first direction and the width of the second recess in the first direction, may be equal to or less than the width of the pressing surface in the first direction.

[0017] In an embodiment of the present invention, a method for manufacturing a display device includes: fixing a window to an assembly frame having a receiving groove; fixing a display panel to a fixture, the display panel including a first portion and a second portion, the first portion having a first width parallel to a first direction, and the second portion having a second width less than the first width and parallel to the first direction; and pressing the first portion of the display panel toward the window using a pad, the pad including a pressing surface, a first pad side surface curved from the pressing surface in a direction away from the assembly frame, a second pad side surface curved from the pressing surface in a direction away from the assembly frame, and a recessed portion recessed from the pressing surface and the first pad side surface, wherein the display panel is aligned such that the recessed portion of the pad is adjacent to the boundary between the first portion and the second portion.

[0018] In an embodiment, the method may further include: bending the display panel relative to a first direction using a clamp; after bending the display panel, contacting a first portion of the display panel with a pad; and after contacting the display panel with the pad, bending the first portion of the display panel relative to a second direction intersecting the first direction.

[0019] In one embodiment, the window may include a main transmissive surface and a side transmissive surface, the side transmissive surface being curved and extending from the main transmissive surface, and a first portion of the display panel may be attached to the main transmissive surface and the side transmissive surface.

[0020] In one embodiment, in the first direction, the length of the boundary between the first portion and the second portion is greater than the length of the first pad side surface.

[0021] In an embodiment, the recess may include a recessed bottom surface, a first recessed side surface connected to the recessed bottom surface and the pressing surface, and a second recessed side surface connected to the recessed bottom surface and the first pad side surface, wherein the portions of the recess facing the first recessed side surface and the portions facing the second recessed side surface are open.

[0022] In one embodiment, the width of the pressing surface in the first direction may be greater than the length of the first pad side surface in the first direction.

[0023] In an embodiment of the present invention, the laminating apparatus includes: an assembly frame including a receiving groove defined by a bottom surface and a first side surface, a second side surface, a third side surface, and a fourth side surface that bend and extend from the bottom surface; and a pad including a pressing surface facing the bottom surface and a first pad side surface, a second pad side surface, a third pad side surface, and a fourth pad side surface extending from the pressing surface, wherein a recess is defined in the portion where the first pad side surface and the pressing surface intersect each other, and the first pad side surface has a predetermined curvature.

[0024] In an embodiment, the recess may include a first recess and a second recess, wherein the first recess and the second recess are spaced apart from each other in a first direction, and a first pad side surface is between the first recess and the second recess.

[0025] In an embodiment, the recess may include a recessed bottom surface, a first recessed side surface connected to the recessed bottom surface and the pressing surface, and a second recessed side surface connected to the recessed bottom surface and the first pad side surface, wherein the portions of the recess facing the first recessed side surface and the portions facing the second recessed side surface are open. Attached Figure Description

[0026] The accompanying drawings are included to provide a further understanding of the inventive concept and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the inventive concept and, together with the description, serve to explain the principles of the inventive concept. In the drawings:

[0027] Figure 1 This is a perspective view of a display device according to an embodiment of the present invention;

[0028] Figure 2AThis is a cross-sectional view of a display device according to an embodiment of the present invention;

[0029] Figure 2B This is a cross-sectional view of a display device according to an embodiment of the present invention;

[0030] Figure 3 This is an exploded perspective view showing a partial configuration of a display device according to an embodiment of the concept of the present invention;

[0031] Figure 4 This is a cross-sectional view showing a partial configuration of a display device according to an embodiment of the present invention;

[0032] Figure 5A This is a cross-sectional view of a lamination apparatus according to an embodiment of the present invention;

[0033] Figure 5B This is a cross-sectional view of a lamination apparatus according to an embodiment of the present invention;

[0034] Figure 6 This is a plan view showing an assembly rack according to an embodiment of the concept of the present invention;

[0035] Figure 7A This is a plan view illustrating an embodiment of the pad according to the concept of the present invention;

[0036] Figure 7B It is shown Figure 7A An enlarged plan view of AA';

[0037] Figure 8 It is along Figure 7B A sectional view taken by line I-I';

[0038] Figure 9 It is along Figure 7B A sectional view taken from line II-II';

[0039] Figures 10A to 10D This is a view illustrating a method for manufacturing a display device according to an embodiment of the present invention;

[0040] Figure 11 This is a view showing a display panel according to an embodiment of the concept of the present invention;

[0041] Figure 12 This is a plan view illustrating an embodiment of the pad according to the concept of the present invention;

[0042] Figure 13 This is a view illustrating a pad and a display panel according to an embodiment of the concept of the present invention; and

[0043] Figure 14This is a view showing a pad and a display panel according to an embodiment of the concept of the present invention. Detailed Implementation

[0044] It should be understood that when a component (or region, layer, part, etc.) is referred to as being "on" another component, "connected to" or "attached to" another component, it can be directly set on another component, directly connected to or directly attached to another component, or an intermediate component can be set between them.

[0045] The same reference numerals always denote the same elements. Furthermore, in the accompanying drawings, the thickness, scale, and dimensions of elements are exaggerated in order to effectively depict the technical content.

[0046] The term “and / or” includes any and all combinations of one or more of the relevant listed items.

[0047] It should be understood that although the terms first, second, etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the teachings of this disclosure, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. Unless the context clearly indicates otherwise, the singular form is intended to include the plural form as well.

[0048] Furthermore, terms such as "below," "down," "above," and "up" may be used to describe the relationships between the components shown in the accompanying drawings. These terms are relative concepts and are described based on the directions indicated in the drawings.

[0049] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. It should also be understood that terms, such as those defined in commonly used dictionaries, shall be interpreted as having a meaning consistent with their meaning in the context of the relevant art and shall not be interpreted as having an idealized or overly formal meaning, unless expressly defined herein.

[0050] It will be further understood that the terms “comprising” or “including” as used in this specification specify the presence of the stated features, integrals, steps, operations, elements, components or combinations thereof, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components or combinations thereof.

[0051] In the following description, embodiments of the inventive concept will be described with reference to the accompanying drawings.

[0052] Figure 1 This is a perspective view of a display device according to an embodiment of the present invention. Figure 2AThis is a cross-sectional view of a display device according to an embodiment of the present invention. Figure 2B This is a cross-sectional view of a display device according to an embodiment of the present invention.

[0053] Reference Figure 1 , Figure 2A and Figure 2B The display device 100 can be a device activated in response to an electrical signal. For example, the display device 100 can be a mobile phone, tablet PC, vehicle navigation unit, game console, or wearable device, but is not limited thereto. Figure 1 In this example, the display device 100 is shown as a mobile phone.

[0054] In the display device 100, a display area can be defined. Through the display area, the display device 100 can display images and receive external input. The display area may include a main display area 100AM and a first sub-display area 100AS1, a second sub-display area 100AS2, a third sub-display area 100AS3, and a fourth sub-display area 100AS4.

[0055] The main display area 100AM may be substantially parallel to the plane defined by the first direction DR1 and the second direction DR2. The third direction DR3, which intersects both the first direction DR1 and the second direction DR2, may be defined as the thickness direction of the display device 100. Unlike in the figure, the main display area 100AM may have a shape that is concave or convex relative to the plane defined by the first direction DR1 and the second direction DR2.

[0056] The first sub-display area 100AS1, the second sub-display area 100AS2, the third sub-display area 100AS3, and the fourth sub-display area 100AS4 can be curved from the main display area 100AM. The main display area 100AM and the first, second, third, and fourth sub-display areas 100AS1, 100AS2, 100AS3, and 100AS4 can be adjacent to each other to create a continuous display area. Each of the first, second, third, and fourth sub-display areas 100AS1, 100AS2, 100AS3, and 100AS4 can be curved from the main display area 100AM and has a predetermined curvature. The curvatures of the first, second, third, and fourth sub-display areas 100AS1, 100AS2, 100AS3, and 100AS4 can be equal to or different from each other.

[0057] The first sub-display area 100AS1 and the third sub-display area 100AS3 may extend along the first direction DR1 and be spaced apart from each other along the second direction DR2, with the main display area 100AM located between the first sub-display area 100AS1 and the third sub-display area 100AS3. The second sub-display area 100AS2 and the fourth sub-display area 100AS4 may extend along the second direction DR2 and be spaced apart from each other along the first direction DR1, with the main display area 100AM located between the second sub-display area 100AS2 and the fourth sub-display area 100AS4.

[0058] Figure 1 An exemplary illustration shows a display device 100 including a main display area 100AM and four sub-display areas: a first sub-display area 100AS1, a second sub-display area 100AS2, a third sub-display area 100AS3, and a fourth sub-display area 100AS4. However, embodiments of the present invention are not limited thereto. For example, the display device 100 may include a main display area 100AM and only some of the first sub-display areas 100AS1, the second sub-display area 100AS2, the third sub-display area 100AS3, and the fourth sub-display area 100AS4.

[0059] Figure 3 This is an exploded perspective view showing a partial configuration of a display device according to an embodiment of the concept of the present invention.

[0060] Reference Figure 3 The display device 100 may include a window 110, a display panel 120, a driver chip 130, and a main circuit board 140.

[0061] Window 110 may include an optically transparent insulating material, and window 110 may include glass or plastic. Window 110 may include a multi-layered structure or a single-layered structure.

[0062] Window 110 may include a main transmissive surface 110AM and a first side transmissive surface 110AS1, a second side transmissive surface 110AS2, a third side transmissive surface 110AS3, and a fourth side transmissive surface 110AS4 that bend and extend from the main transmissive surface 110AM. Each of the first side transmissive surface 110AS1, the second side transmissive surface 110AS2, the third side transmissive surface 110AS3, and the fourth side transmissive surface 110AS4 may have a predetermined curvature. The curvatures of the first side transmissive surface 110AS1, the second side transmissive surface 110AS2, the third side transmissive surface 110AS3, and the fourth side transmissive surface 110AS4 may be equal to or different from each other. However, embodiments of the inventive concept are not limited thereto, and each of the first side transmissive surface 110AS1, the second side transmissive surface 110AS2, the third side transmissive surface 110AS3, and the fourth side transmissive surface 110AS4 may be a flat surface.

[0063] The first side transmission surface 110AS1 and the third side transmission surface 110AS3 may extend in the first direction DR1 and be spaced apart from each other in the second direction DR2, with the main transmission surface 110AM located between the first side transmission surface 110AS1 and the third side transmission surface 110AS3. The second side transmission surface 110AS2 and the fourth side transmission surface 110AS4 may extend in the second direction DR2 and be spaced apart from each other in the first direction DR1, with the main transmission surface 110AM located between the second side transmission surface 110AS2 and the fourth side transmission surface 110AS4.

[0064] Display panel 120 may be disposed below and attached to window 110. Display panel 120 may be a physical component for generating images. Display panel 120 may be a light-emitting display panel. For example, display panel 120 may be an organic light-emitting display panel, a quantum dot light-emitting display panel, a micro LED display panel, or a nano LED display panel.

[0065] The display panel 120 may include a first portion 121 and a second portion 122. The first portion 121 and the second portion 122 may be adjacent to each other in a second direction DR2. The second portion 122 may be a portion that protrudes from and extends from the first portion 121 in the second direction DR2, and the first portion 121 and the second portion 122 may have a continuous shape (or an integral shape). The width WT1 of the first portion 121 in the first direction DR1 may be greater than the width WT2 of the second portion 122 in the first direction DR1. The length of the boundary 120BD between the first portion 121 and the second portion 122 in the first direction DR1 may be less than the width WT1 of the first portion 121.

[0066] The first portion 121 of the display panel 120 may include a main display area 120AM and first side display areas 120AS1, 120AS2, 120AS3, and 120AS4. The main display area 120AM and the first side display areas 120AS1, 120AS2, 120AS3, and 120AS4 can provide images to the window 110. Although not shown, the display panel 120 may also include a non-display area defined around the main display area 120AM and the first side display areas 120AS1, 120AS2, 120AS3, and 120AS4.

[0067] Window 110 can be attached to a first portion 121 of display panel 120. That is, the first portion 121 can be attached to the main transmissive surface 110AM and the first side transmissive surface 110AS1, the second side transmissive surface 110AS2, the third side transmissive surface 110AS3, and the fourth side transmissive surface 110AS4. For example, the main display area 120AM can be attached to the main transmissive surface 110AM, and the first side display area 120AS1, the second side display area 120AS2, the third side display area 120AS3, and the fourth side display area 120AS4 can be attached to the first side transmissive surface 110AS1, the second side transmissive surface 110AS2, the third side transmissive surface 110AS3, and the fourth side transmissive surface 110AS4, respectively.

[0068] The second portion 122, not attached to window 110, can be bent toward the bottom surface of the first portion 121. A driver chip 130 can be mounted to the second portion 122, and a main circuit board 140 can be attached to the second portion 122. The driver chip 130 can be a chip-type timing control circuit. However, this is merely an example, and the driver chip 130 can be mounted on a film separate from the display panel 120. In this case, the driver chip 130 can be electrically connected to the display panel 120 through this film.

[0069] Figure 4 This is a cross-sectional view showing a partial configuration of a display device according to an embodiment of the present invention.

[0070] Figure 4 The diagram shows the state in which window 110 and display panel 120 are attached to each other via adhesive layer 150. Adhesive layer 150 may include a general-purpose adhesive or bonding agent. For example, adhesive layer 150 may be a pressure-sensitive adhesive (PSA) film or a transparent adhesive component, such as an optically clear adhesive (OCA) film or an optically clear resin (OCR).

[0071] Figure 5AThis is a cross-sectional view of a lamination apparatus according to an embodiment of the present invention. Figure 5B This is a cross-sectional view of a lamination apparatus according to an embodiment of the present invention.

[0072] Figure 5A and Figure 5B This is a cross-sectional view showing the same lamination equipment 200. Figure 5A This is a view showing a cross-section of the laminating apparatus 200 parallel to the plane defined by the first direction DR1 and the third direction DR3, and Figure 5B This is a view showing a cross-section of the laminating apparatus 200 parallel to the plane defined by the second direction DR2 and the third direction DR3.

[0073] Reference Figure 5A and Figure 5B The laminating equipment 200 may include an assembly frame 210 (or upper assembly frame), a pad 220 (or pressing pad), a lower assembly frame 230, a clamp 240, a first pressing part 250, a shape control part 260, and a second pressing part 270.

[0074] The mounting bracket 210 may include a bottom surface 210B and a first side surface 210S1, a second side surface 210S2, a third side surface 210S3, and a fourth side surface 210S4 that bend and extend from the bottom surface 210B. The mounting bracket 210 may include a receiving groove 210RH defined by the bottom surface 210B and the first side surface 210S1, second side surface 210S2, third side surface 210S3, and fourth side surface 210S4. Window 110 (see...) Figure 4 It can be fixed to the receiving tank 210RH.

[0075] The heights of the first side surface 210S1, the second side surface 210S2, the third side surface 210S3, and the fourth side surface 210S4 of the assembly rack 210 may be unequal. For example, the first side surface 210S1 and the third side surface 210S3 may have the same first height HT1, and the second side surface 210S2 and the fourth side surface 210S4 may have the same second height HT2. The first height HT1 may be less than the second height HT2. The first height HT1 may represent the height of the assembly rack sidewall including the first side surface 210S1, and the second height HT2 may represent the height of the assembly rack sidewall including the second side surface 210S2.

[0076] The first height HT1 may correspond to the depth of the portion of the bottom surface 210B adjacent to the first side surface 210S1, and the second height HT2 may correspond to the depth of another portion of the bottom surface 210B adjacent to the second side surface 210S2.

[0077] Pad 220 may be disposed below assembly frame 210. Pad 220 may be made of an elastic material. For example, pad 220 may include a material having a shape that can be easily deformed due to pressure, but is not particularly limited thereto. For example, pad 220 may include silicone resin.

[0078] The pad 220 may include a pressing surface 220PS and a first pad side surface 220S1, a second pad side surface 220S2, a third pad side surface 220S3, and a fourth pad side surface 220S4 that bend and extend from the pressing surface 220PS. Side surface grooves 220SH may be defined in portions adjacent to each of the second pad side surface 220S2 and the fourth pad side surface 220S4 of the pad 220. Side surface grooves 220SH may be used to retain the guide film 300 (see...). Figure 10A The part, of which the display panel 120 (see) Figure 4 Attached to the guide film 300. In embodiments of the present invention, the side surface groove 220SH may be omitted. Optionally, the side surface groove 220SH may be further provided in at least one of the portion adjacent to the first pad side surface 220S1 and the portion adjacent to the third pad side surface 220S3.

[0079] The lower assembly frame 230 may be disposed below the pad 220. The lower assembly frame 230 may move the pad 220 in a direction toward the assembly frame 210 or in a direction away from the assembly frame 210. For example, the lower assembly frame 230 and the pad 220 may move in a direction parallel to the third direction DR3.

[0080] The clamps 240 can be spaced apart from each other on the first direction DR1. Display panel 120 (see...) Figure 3 The attached guide film 300 (see) Figure 10A The clamp can be held by the fixture 240. The fixture 240 can be modified to other components. For example, the fixture 240 can be replaced by an insertion portion that defines a predetermined slot. The fixtures 240 can move in a direction that approaches each other or in a direction that moves away from each other. For example, each fixture 240 can move in a direction parallel to the first direction DR1.

[0081] The first pressing portion 250 may have a rod shape extending in the second direction DR2. The first pressing portion 250 may serve to maintain contact with the guide film 300 (see) in contact with the pad 220. Figure 10A This allows the guide film 300 to come into close contact with the pad 220. For example, the first pressing portion 250 may have a shape consistent with the side surface groove 220SH.

[0082] The shape control section 260 may be disposed above the lower assembly bracket 230 and adjacent to the pad 220. For example, multiple shape control sections 260 may be provided and spaced apart from each other, with the pad 220 located between the multiple shape control sections 260. For example, the shape control sections 260 may be spaced apart from each other in the second direction DR2. The shape control sections 260 may be disposed adjacent to the first pad side surface 220S1 and the third pad side surface 220S3. Each shape control section 260 may extend in the first direction DR1.

[0083] The shape control unit 260 can be disposed facing one of the first side surfaces 210S1, the second side surface 210S2, the third side surface 210S3, and the fourth side surface 210S4 of the mounting frame 210, which has a relatively low height. For example, the shape control unit 260 can be disposed in the region facing the first side surface 210S1 and the region facing the third side surface 210S3.

[0084] The shape control unit 260 can control the shape of the pad 220 when the pad 220 presses against the mounting bracket 210. The shape control unit 260 can be rigid. For example, the shape control unit 260 can be made of plastic.

[0085] When the pad 220 presses against the assembly frame 210, the second side surface 210S2, the fourth side surface 210S4, and the shape control section 260 prevent the pad 220 from protruding outward before it fully presses against the receiving groove 210RH of the assembly frame 210. Therefore, when using the pad 220 to laminate two objects, the possibility of air bubbles forming between the two objects can be reduced, and the lamination process yield can be improved.

[0086] The second pressing part 270 may be configured to cause the guide membrane 300 (see...) Figure 10A The second pressing part 270 is a component with a deformable shape. The second pressing part 270 can be configured to move in a direction parallel to the second direction DR2. The second pressing part 270 can be omitted.

[0087] Figure 6 This is a plan view showing an assembly rack according to an embodiment of the concept of the present invention.

[0088] Reference Figure 6 The receiving slot 210RH of the assembly rack 210 is shown (see Figure 5A It is defined by the bottom surface 210B and the first side surface 210S1, the second side surface 210S2, the third side surface 210S3 and the fourth side surface 210S4.

[0089] The first side surface 210S1 and the third side surface 210S3 may extend in the first direction DR1 and be spaced apart from each other in the second direction DR2. The second side surface 210S2 and the fourth side surface 210S4 may extend in the second direction DR2 and be spaced apart from each other in the first direction DR1.

[0090] The length LT1 of the first side surface 210S1 can be less than the length LT2 of the second side surface 210S2. However, this is only for illustrative purposes. The length LT1 of the first side surface 210S1 and the length LT2 of the second side surface 210S2 can be varied depending on the object to be laminated.

[0091] Furthermore, when viewed in a plan view or when viewed in the thickness direction of the assembly frame 210, such as in the third direction DR3, the bottom surface 210B is shown as having a quadrilateral shape. However, embodiments of the inventive concept are not limited thereto. The shape of the bottom surface 210B can also be varied depending on the object to be laminated. For example, the bottom surface 210B can have various shapes such as circles, polygons, and ellipses, as well as amorphous shapes.

[0092] Figure 7A This is a plan view illustrating a pad according to an embodiment of the concept of the present invention. Figure 7B It is shown Figure 7A An enlarged plan view of AA'.

[0093] Reference Figure 7A and Figure 7B The first pad-side surface 220S1 and the third pad-side surface 220S3 may extend in the first direction DR1, and the second pad-side surface 220S2 and the fourth pad-side surface 220S4 may extend in the second direction DR2. Each of the first pad-side surface 220S1, the second pad-side surface 220S2, the third pad-side surface 220S3, and the fourth pad-side surface 220S4 may have a predetermined curvature. In the pad 220, a connecting surface 220SC may be further defined.

[0094] The connecting surface 220SC can be defined between pad-side surfaces extending in different directions, for example, between the first pad-side surface 220S1 and the second pad-side surface 220S2, between the first pad-side surface 220S1 and the fourth pad-side surface 220S4, between the fourth pad-side surface 220S4 and the third pad-side surface 220S3, or between the second pad-side surface 220S2 and the third pad-side surface 220S3. The connecting surface 220SC can be inclined relative to adjacent pad-side surfaces among the first pad-side surface 220S1, the second pad-side surface 220S2, the third pad-side surface 220S3, and the fourth pad-side surface 220S4. For example, the connecting surface 220SC can be defined as a surface extending in a direction between a first direction DR1 and a second direction DR2.

[0095] The connecting surface 220SC can be when the laminated window 110 (see...) Figure 3 ) and display panel 120 (see Figure 3 Press and hold the display panel 120 (see) Figure 3 The area corresponding to the double-curved surface of the display panel 120. A double-curved surface can be the area where two side display areas extending in different directions intersect each other. A double-curved surface is more likely to have wrinkled or twisted portions than a single-curved surface. For example, when display panel 120 (see...) Figure 3 When the wrinkled portion of the display panel 120 is pressed strongly, the display panel 120 (see...) Figure 3 Cracks may occur in the display panel 120. According to an embodiment of the present invention, since a connecting surface 220SC is provided, the amount of material applied to the display panel 120 (see [reference]) can be reduced. Figure 3 The pressure on the double-bent surface of the laminated display panel 120 (see) can be applied. Figure 3 When the window is 110, the display panel 120 (see) is reduced. Figure 3 The possibility of cracks appearing in the material.

[0096] Multiple recesses 220R can be provided, and each recess 220R may include a first recess 220R1 and a second recess 220R2. The first recess 220R1 and the second recess 220R2 may be spaced apart from each other, and a first pad-side surface 220S1 is located between the first recess 220R1 and the second recess 220R2. A side surface groove 220H may be further defined in the first pad-side surface 220S1. The side surface groove 220H may be defined between the first recess 220R1 and the second recess 220R2 and has a recessed shape.

[0097] The side surface groove 220H can be configured to prevent pressure from being applied to specific areas of the component to be laminated during the lamination process. For example, when displaying panel 120 (see...) Figure 3 )Laminated to window 110 (see Figure 3When the pressure is applied to the side surface groove 220H of the pad 220, it can prevent pressure from being applied to the drive chip 130 (see) which is located therein. Figure 3 The area to be applied, or the area where the driver chip 130 is located (see) should be reduced. Figure 3 The pressure in the area of ​​the driver chip 130 can be reduced or eliminated. Figure 3 The possibility of damage during the lamination process.

[0098] The sum of the width LTR1a of the first recess 220R1 in the first direction DR1, the width LTR2a of the second recess 220R2 in the first direction DR1, and the distance LTA between the first recess 220R1 and the second recess 220R2 in the first direction DR1 can be equal to or less than the width LTP1 of the pressing surface 220PS in the first direction DR1. Since the first recess 220R1 and the second recess 220R2 are configured to be recessed from the first pad-side surface 220S1, the length of the first pad-side surface 220S1 in the first direction DR1 can be less than the width LTP1 of the pressing surface 220PS in the first direction DR1. The length of the first pad-side surface 220S1 in the first direction DR1 can be equal to the distance LTA between the first recess 220R1 and the second recess 220R2 in the first direction DR1.

[0099] Reference Figure 7B An enlarged view of the first recess 220R1 is shown. The first recess 220R1 can be recessed from the pressing surface 220PS, the connecting surface 220SC, and the first pad side surface 220S1.

[0100] When viewed in the thickness direction of the pad 220, for example, in the third direction DR3, the width LTR1a of the first recess 220R1 in the first direction DR1 can be greater than the width LTR1b of the first recess 220R1 in the second direction DR2. Each of the widths LTR1a and LTR1b can correspond to the recessed bottom surface 220RB of the first recess 220R1 (see...). Figure 8 The maximum width in the first direction DR1 or the second direction DR2.

[0101] Reference Figure 7ASince the second recess 220R2 has a shape that is substantially symmetrical to the first recess 220R1 with respect to the straight line BSL extending in the second direction DR2, a description of the second recess 220R2 will be omitted. In this case, the first recess 220R1 and the second recess 220R2 may have substantially the same dimensions. Here, "same dimensions" can mean that the first recess 220R1 and the second recess 220R2 have the same width LTR1a in the first direction DR1 and the same width LTR1b in the second direction DR2. However, embodiments of the inventive concept are not limited to this. For example, the second recess 220R2 may have a shape similar to the first recess 220R1, but with different dimensions. For example, the width LTR2a of the second recess 220R2 in the first direction DR1 may be greater than or less than the width LTR1a of the first recess 220R1 in the first direction DR1.

[0102] Figure 8 It is along Figure 7B A sectional view taken from line I-I'. Figure 9 It is along Figure 7B The sectional view taken from line II-II'.

[0103] Reference Figure 8 and Figure 9 The first recess 220R1 may include a recessed bottom surface 220RB, a first recessed side surface 220RS1, and a second recessed side surface 220RS2. The first recess 220R1 may be defined by removing a portion of the pad 220 in the thickness direction (e.g., in the third direction DR3). Therefore, the first recess 220R1 may include the recessed bottom surface 220RB.

[0104] A first recessed side surface 220RS1 may be disposed between the recessed bottom surface 220RB and the pressing surface 220PS, and connected to the recessed bottom surface 220RB and the pressing surface 220PS. A second recessed side surface 220RS2 may be disposed between the recessed bottom surface 220RB and the first pad side surface 220S1, and connected to the recessed bottom surface 220RB and the first pad side surface 220S1.

[0105] The portion of the first recessed portion 220R1 facing the first recessed side surface 220RS1 may be open, and the portion of the first recessed portion 220R1 facing the second recessed side surface 220RS2 may also be open. That is, the first recessed portion 220R1 may be defined only by the recessed bottom surface 220RB, the first recessed side surface 220RS1, and the second recessed side surface 220RS2.

[0106] The width LTR1a of the first recess 220R1 in the first direction DR1, the width LTR1b of the first recess 220R1 in the second direction DR2, and the height LTR1c of the first recess 220R1 in the third direction DR3 can be designed according to the object to be laminated. For example, the width LTR1a can be about 10 mm, the width LTR1b can be about 2 mm, and the height LTR1c can be about 3 mm. However, the embodiments of the present invention are not limited thereto.

[0107] Figures 10A to 10D This is a view illustrating a method for manufacturing a display device according to an embodiment of the present invention.

[0108] Reference Figure 10A The window 110 is secured to the mounting bracket 210. The window 110 can be placed in the receiving groove 210RH of the mounting bracket 210. A portion of the receiving groove 210RH may have a shape consistent with that of the window 110.

[0109] The guide film 300 can be attached to the bottom surface of the display panel 120, and the adhesive layer 150 can be attached to the top surface of the display panel 120. Figure 10A As an example, an adhesive layer 150 is shown being applied to the top surface of the display panel 120, but embodiments of the present invention are not limited thereto. For example, the adhesive layer 150 may be applied to the bottom surface of the window 110. Both the guide film 300 and the adhesive layer 150 may be attached to the first portion 121 of the display panel 120 (see [link to documentation]). Figure 3 ).

[0110] The display panel 120 is secured to the clamp 240. For example, the guide film 300 can be clamped to the clamp 240. That is, the display panel 120 does not need to be directly clamped to the clamp 240, but can be indirectly clamped to the clamp 240 through the guide film 300. Therefore, the display panel 120 will not be damaged due to the clamping operation of the clamp 240.

[0111] Reference Figure 10B The clamp 240 can move in a direction ST1 that brings the components closer together. Therefore, the guide film 300, display panel 120, and adhesive layer 150 can be bent first. The direction ST1 that brings the components closer together can be parallel to the first direction DR1, and the display panel 120 can be bent relative to the first direction DR1. For example, the first portion 121 of the display panel 120 (see...) Figure 3 It can bend relative to the first direction DR1.

[0112] After bending the display panel 120, the pad 220 and the lower mounting bracket 230 can be moved in the direction ST2 toward the mounting bracket 210. The direction ST2 toward the mounting bracket 210 can be parallel to the third direction DR3.

[0113] Reference Figure 10C The guide film 300 contacts the pad 220, and the pad 220 presses the guide film 300, display panel 120, and adhesive layer 150 onto the third-direction DR3. Therefore, the shapes of the guide film 300, display panel 120, and adhesive layer 150 can be deformed to conform to the shape of the pad 220. Subsequently, the guide film 300 is secured to the pad 220 using the first pressing portion 250.

[0114] Reference Figure 10D The second pressing part 270 (see Figure 5B The display panel 120 may include a first sub-pressing portion 271, a second sub-pressing portion 272, and a third sub-pressing portion 273. The first sub-pressing portion 271, the second sub-pressing portion 272, and the third sub-pressing portion 273 press the display panel 120 in the second direction DR2, and therefore, the display panel 120 can be bent relative to the second direction DR2. Next, the first portion 121 of the display panel 120 can be bent by the first sub-pressing portion 271, the second sub-pressing portion 272, and the third sub-pressing portion 273.

[0115] Refer again Figure 10C The pad 220 and the lower mounting bracket 230 can press the display panel 120 in the direction toward the mounting bracket 210, so that the display panel 120 is laminated with the window 110.

[0116] Figure 11 This is a view showing a pad and a display panel according to an embodiment of the concept of the present invention.

[0117] Reference Figure 11 To illustrate the alignment of the display panel 120 and the pad 220, the display panel 120 and the pad 220 are shown.

[0118] Reference Figures 10A to 10D as well as Figure 11 The pad 220 can be disposed below the first portion 121 of the display panel 120. The first recess 220R1 (or recess) of the pad 220 can be aligned adjacent to the boundary 120BD between the first portion 121 and the second portion 122.

[0119] Each of the first distance DE1 and the second distance DE2 between the edge 122e of the second portion 122 and the edge of the first recess 220R1 may have a predetermined value or a greater value. Each of the first distance DE1 and the second distance DE2 may be a distance in a direction parallel to the first direction DR1. Each of the first distance DE1 and the second distance DE2 may be about 5 mm or greater. However, this is only an example, and each of the first distance DE1 and the second distance DE2 is not limited to the values ​​described above.

[0120] The length of the boundary 120BD between the first portion 121 and the second portion 122 in the first direction DR1 can be greater than the length of the first pad side surface 220S1 in the first direction DR1. Therefore, when viewed in the second direction DR2, the edge 122e of the second portion 122 can be adjacent to the first recess 220R1 and the second recess 220R2 (see...). Figure 7A )overlapping.

[0121] When the display panel 120 is laminated to the window 110, pressure can be applied to the display panel 120. The first side display area 120AS1 of the display panel 120 (see...) Figure 3 ) and the first side transmission surface 110AS1 of window 110 (see Figure 3 The curved first pad side surfaces 220S1 of the pad 220 can be pressed and laminated together. That is, the curved first pad side surfaces 220S1 can be used to project the first side display area 120AS1 of the display panel 120 (see...) Figure 3 ) and the first side transmission surface 110AS1 of window 110 (see Figure 3 Apply sufficient pressure.

[0122] Adjacent to the first side display area 120AS1 (see Figure 3 The second portion 122 may have a width smaller than that of the first portion 121. The portion where the edge 121e of the first portion 121 connects to the edge 122e of the second portion 122 may be susceptible to stress. According to an embodiment of the invention, the first recess 220R1 and the second recess 220R2 (see...) Figure 7A It can be set at the boundary 120BD between the first part 121 and the second part 122.

[0123] A predetermined space is ensured between the display panel 120 and the pad 220 by means of the first recess 220R1. Therefore, even if the pad 220 presses against the display panel 120, the pressure applied to the portion in which the first recess 220R1 is defined can be lower than the pressure applied to the portion in which the first recess 220R1 is not defined. Therefore, the stress applied to the region adjacent to the boundary 120BD between the first portion 121 and the second portion 122 can be reduced by means of the first recess 220R1. As a result, when the display panel 120 and the window 110 are laminated, the possibility of cracks appearing in the display panel 120 can be reduced, and the lamination process yield can be improved.

[0124] Figure 12 This is a plan view illustrating a pad according to an embodiment of the concept of the present invention.

[0125] Reference Figure 12 The diagram shows a plan view of pad 220a. (Compared to...) Figure 7ACompared to the pad 220 shown, the pad 220a may have a structure in which the side surface groove 220H is removed.

[0126] In the pad 220a, a first recess 220R1 and a second recess 220R2 may be defined. The first recess 220R1 and the second recess 220R2 may be spaced apart from each other, and the first pad side surface 220S1a is between the first recess 220R1 and the second recess 220R2.

[0127] The first recess 220R1 may be defined as being recessed from the pressing surface 220PS, the first pad side surface 220S1a, and the connecting surface 220SC, and the second recess 220R2 may be defined as being recessed from the pressing surface 220PS, the first pad side surface 220S1a, and the connecting surface 220SC between the first pad side surface 220S1a and the fourth pad side surface 220S4.

[0128] The pressure applied to the display panel 120 can be reduced by the first recess 220R1 and the second recess 220R2 (see...). Figure 3 The pressure on the stress-sensitive parts of the display panel 120 can be reduced, thus reducing the pressure on the display panel 120 (see [link]). Figure 3 The possibility of damage during the lamination process.

[0129] Figure 13 This is a view showing a pad and a display panel according to an embodiment of the concept of the present invention.

[0130] Reference Figure 13 The image shows pad 220b and display panel 120a. The shape of display panel 120a may differ from the above reference. Figure 3 The shape of the described display panel 120. For example, the display panel 120a may include a first portion 121a and a second portion 122a. The second portion 122a may have a shape aligned with one side of the first portion 121a.

[0131] A recess 220Ra may be defined in the pad 220b. The recess 220Ra may be recessed from the pressing surface 220PS, the connecting surface 220SC and the first pad side surface 220S1b.

[0132] The display panel 120a and the pad 220b can be aligned such that the recess 220Ra of the pad 220b is adjacent to the curved edge portion 220eb between the first portion 121a and the second portion 122a.

[0133] The stress applied to the edge portion 220eb can be reduced by the recess 220Ra. Therefore, when the display panel 120a is laminated to the window 110 (see...), Figure 3When this is done, the possibility of cracks appearing in the display panel 120a can be reduced, and the lamination process yield can be improved.

[0134] Figure 14 This is a view showing a pad and a display panel according to an embodiment of the concept of the present invention.

[0135] Reference Figure 14 The image shows pad 220c and display panel 120b. The shape of display panel 120b may differ from the above reference. Figure 3 The shape of the display panel 120 is described. For example, the display panel 120b may include a first portion 121b and a second portion 122b. The second portion 122b may have a shape that extends from the long side of the first portion 121b.

[0136] In the pad 220c, a first recess 220R1b and a second recess 220R2b may be defined. Each of the first recess 220R1b and the second recess 220R2b may be recessed from the pressing surface 220PS and the pad side surface 220S2b. In the embodiment described above, the recess is defined on the short side of the pressing surface 220PS. On the other hand, in Figure 14 In the middle, the first recess 220R1b and the second recess 220R2b can be defined on the long side of the pressing surface 220PS.

[0137] As an example, no recess is defined on the first pad-side surface 220S1c, but embodiments of the present invention are not limited thereto. For example, as Figure 7A As shown, a first recess 220R1 can even be further defined on the first pad side surface 220S1c of the pad 220c (see...). Figure 7A ) and the second recess 220R2 (see Figure 7A At least one of the following. Furthermore, a recess may also be defined on at least one of the third pad side surface 220S3 and the fourth pad side surface 220S4.

[0138] As described above, a recess can be defined in the pad, through which the display panel and window are laminated. A predetermined space can be ensured between the display panel and the pad by the recess. Therefore, although the pad applies pressure to the display panel, the pressure applied to the portion where the recess is defined can be less than the pressure applied to the portion where the recess is not defined. Therefore, stress caused by pressure applied to a region adjacent to a boundary with a width different from that of the display panel can be reduced by the recess. Therefore, when the display panel and window are laminated, the possibility of cracks appearing in the display panel can be reduced, and the lamination process yield can be improved.

[0139] Although described with reference to exemplary embodiments of this disclosure, it should be understood that various changes and modifications can be made by those skilled in the art or with ordinary knowledge of the art without departing from the spirit and technical field of this disclosure as claimed. Therefore, the technical scope of this disclosure is not limited to the detailed description in the specification, but should be determined only by reference to the claims.

Claims

1. A lamination apparatus, comprising: The assembly rack includes a receiving groove defined by a bottom surface, a first side surface that bends and extends from the bottom surface, and a second side surface that bends and extends from the bottom surface; as well as Pad, facing the assembly frame, The pad includes a pressing surface facing the bottom surface, a first pad side surface curved from the pressing surface in a direction away from the mounting frame, a second pad side surface curved from the pressing surface in a direction away from the mounting frame, a connecting surface connecting the first pad side surface to the second pad side surface, and a recessed portion recessed from the pressing surface, the connecting surface, and the first pad side surface. The recessed portion includes a recessed bottom surface, a first recessed side surface connected to the recessed bottom surface and the connecting surface, and a second recessed side surface connected to the recessed bottom surface and the first pad side surface. Wherein, the first pad-side surface extends in a first direction, the second pad-side surface extends in a second direction intersecting the first direction, and the connecting surface extends in a direction inclined relative to both the first and second directions. The portion of the recess facing the first recessed side surface and the portion facing the second recessed side surface are open, such that a space is formed adjacent to the connecting surface at the end of the first pad side surface in the first direction.

2. The lamination equipment according to claim 1, wherein, The first side surface extends in the first direction; as well as The second side surface extends in a second direction that intersects the first direction.

3. The lamination equipment according to claim 2, wherein, When viewed from the thickness direction of the pad, the width of the recess in the first direction is greater than the width of the recess in the second direction.

4. The laminating equipment according to claim 2, wherein, The length of the first side surface in the first direction is less than the length of the second side surface in the second direction.

5. The lamination equipment according to claim 2, wherein, The height of the first side surface is less than the height of the second side surface.

6. The laminating apparatus according to claim 5, further comprising a shape control unit disposed adjacent to the first pad side surface of the pad, in, The shape control unit has a shape that extends in the first direction.

7. The laminating apparatus according to claim 6, wherein, The rigidity of the shape control part is greater than that of the pad.

8. The lamination equipment according to claim 2, wherein, The recessed portion includes a first recessed portion and a second recessed portion, The first recess and the second recess are recessed from the pressing surface and the first pad side surface, and the first recess and the second recess are spaced apart from each other in the first direction, and the first pad side surface is between the first recess and the second recess.

9. The laminating apparatus according to claim 8, wherein, The first recess and the second recess have shapes that are symmetrical to each other with respect to a line of symmetry extending in the second direction.

10. The laminating apparatus according to claim 8, wherein, The sum of the distance between the first recess and the second recess in the first direction, the width of the first recess in the first direction, and the width of the second recess in the first direction is equal to or less than the width of the pressing surface in the first direction.

11. A method for manufacturing a display device, the method comprising: Secure the window to the mounting bracket with the receiving slot; The display panel is fixed to the clamp. The display panel includes a first part and a second part. The first part has a first width parallel to a first direction, and the second part has a second width that is smaller than the first width and parallel to the first direction. as well as The first portion of the display panel is pressed toward the window using a pad, the pad including a pressing surface, a first pad side surface curved from the pressing surface in a direction away from the mounting bracket, a connecting surface curved from the pressing surface in a direction away from the mounting bracket, a second pad side surface curved from the pressing surface in a direction away from the mounting bracket, and a recessed portion recessed from the pressing surface and the first pad side surface, the recessed portion including a recessed bottom surface, a first recessed side surface connected to the recessed bottom surface and the connecting surface, and a second recessed side surface connected to the recessed bottom surface and the first pad side surface. The display panel is aligned such that the recessed portion of the pad is adjacent to the boundary between the first portion and the second portion. Wherein, the first pad-side surface extends in a first direction, the second pad-side surface extends in a second direction intersecting the first direction, and the connecting surface extends in a direction inclined relative to both the first and second directions. The portion of the recess facing the first recessed side surface and the portion facing the second recessed side surface are open, such that a space is formed adjacent to the connecting surface at the end of the first pad side surface in the first direction.

12. The method of claim 11, further comprising: The display panel is bent relative to the first direction by using the clamp; After bending the display panel, the first portion of the display panel is brought into contact with the pad; as well as After the display panel is brought into contact with the pad, the first portion of the display panel is bent relative to a second direction that intersects the first direction.

13. The method according to claim 11, wherein, The window includes a main transmissive surface and side transmissive surfaces, the side transmissive surfaces curving and extending from the main transmissive surface, and The first portion of the display panel is attached to the main transmissive surface and the side transmissive surface.

14. The method according to claim 11, wherein, In the first direction, the length of the boundary between the first portion and the second portion is greater than the length of the first pad side surface.

15. The method according to claim 11, wherein, The width of the pressing surface in the first direction is greater than the length of the first pad side surface in the first direction.

16. A lamination apparatus, comprising: The assembly rack includes a receiving groove defined by a bottom surface and a first side surface, a second side surface, a third side surface, and a fourth side surface that bend and extend from the bottom surface; as well as The pad includes a pressing surface facing the bottom surface, a first pad side surface, a second pad side surface, a third pad side surface, and a fourth pad side surface extending from the pressing surface, and a connecting surface connecting the first pad side surface to the second pad side surface. A recess is defined in the portion where the first pad side surface and the connecting surface intersect each other, and the first pad side surface has a predetermined curvature. The recessed portion includes a recessed bottom surface, a first recessed side surface connected to the recessed bottom surface and the pressing surface, and a second recessed side surface connected to the recessed bottom surface and the first pad side surface. Wherein, the first pad-side surface extends in a first direction, the second pad-side surface extends in a second direction intersecting the first direction, and the connecting surface extends in a direction inclined relative to both the first and second directions. The portion of the recess facing the first recessed side surface and the portion facing the second recessed side surface are open, such that a space is formed adjacent to the connecting surface at the end of the first pad side surface in the first direction.

17. The laminating apparatus according to claim 16, wherein, The recessed portion includes a first recessed portion and a second recessed portion, The first recess and the second recess are spaced apart from each other in the first direction, and the first pad side surface is between the first recess and the second recess.

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