Printed gaskets, methods of making the same, and methods of window manufacturing using the same

Abstract

The present application relates to a printed gasket, a method of manufacturing the same, and a window manufacturing method using the same. The printed gasket includes a first portion including a bottom surface extending in a plane defined by a first direction and a second direction intersecting the first direction, a first upper surface facing the bottom surface, and a first side surface connecting the bottom surface and the first upper surface. A second portion is disposed on the first portion and includes a second upper surface facing the first upper surface, and a second side surface connecting the first upper surface and the second upper surface. A width of the second portion in the first direction increases from the first upper surface toward the second upper surface.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to Korean Patent Application No. 10-2021-0018900, filed on February 10, 2021, with the Korean Intellectual Property Office, and Korean Patent Application No. 10-2021-0143061, filed on October 25, 2021, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] In this document, the present invention relates to a printing pad with improved printing performance, a method for manufacturing the printing pad, and a method for manufacturing a window using the printing pad. Background Technology

[0004] Electronic devices may include windows mounted on a display panel to protect it from external impacts. The windows may be located on the outer surface of the electronic device. Since the windows form the external surface of the electronic device, they directly influence the design of the device.

[0005] Therefore, patterns can be created on windows to protect display panels and to add various designs to electronic devices. For example, a printing pad can be used to transfer ink onto the window to create a pattern.

[0006] However, applying ink to a window may not provide a clear pattern and can result in a considerable defect rate in the window manufacturing process. Summary of the Invention

[0007] The present invention provides a printing backing and a method for manufacturing the printing backing, which forms a clear printed pattern on a window without any unprinted areas.

[0008] The present invention also provides a method for manufacturing a window that can form a clear printed pattern on a side portion that is bent at an angle of about 90° or greater.

[0009] An embodiment of the present invention provides a printed pad comprising a first portion, the first portion including a bottom surface extending in a plane defined by a first direction and a second direction intersecting the first direction, a first upper surface facing the bottom surface, and a first side surface connecting the bottom surface and the first upper surface. A second portion is disposed on the first portion and includes a second upper surface facing the first upper surface and a second side surface connecting the first upper surface and the second upper surface. The width of the second portion in the first direction increases from the first upper surface toward the second upper surface.

[0010] In an embodiment, the angle between the second side surface and a third direction perpendicular to the bottom surface can be in the range of about 10° to about 12°.

[0011] In an embodiment, each of the first and second parts may include rubber or silicone resin.

[0012] In an implementation, the first material included in the first part and the second material included in the second part may be different from each other.

[0013] In an embodiment, the hardness of the first portion can be in the range of about 20 sh A to about 35 sh A. The hardness of the second portion can be in the range of about 7 sh A to about 15 sh A.

[0014] In one embodiment, the width of the first portion in the first direction can decrease from the bottom surface toward the first upper surface.

[0015] In one embodiment, the planar area of ​​the bottom surface in the plane defined by the first and second directions may be greater than the planar area of ​​the first upper surface in the plane defined by the first and second directions. Similarly, the planar area of ​​the second upper surface in the plane defined by the first and second directions may be greater than the planar area of ​​the first upper surface in the plane defined by the first and second directions.

[0016] In one embodiment, the second upper surface may have a curved shape that protrudes in a direction away from the first portion.

[0017] In one embodiment, the first side surface may include a first sub-side surface extending from the bottom surface and having a first slope originating from the bottom surface. A second sub-side surface extends from the first sub-side surface and is directly connected to the first upper surface. The second sub-side surface has a second slope that is less than the first slope.

[0018] In an implementation, the first portion may have a first height relative to a third direction perpendicular to the bottom surface, the second portion may have a second height relative to a third direction, and the ratio of the first height to the second height may be in the range of about 5:5 to about 7:3.

[0019] In an embodiment of the present invention, a window manufacturing method includes: adhering ink to a printing pad; and pressing the ink-adhered printing pad onto a window base portion of the window to provide a printed pattern on the window base portion. The printing pad includes a first portion comprising a bottom surface extending in a plane defined by a first direction and a second direction intersecting the first direction, a first upper surface facing the bottom surface, and a first side surface connecting the bottom surface and the first upper surface. A second portion is disposed on the first portion and includes a second upper surface facing the first upper surface and a second side surface connecting the first upper surface and the second upper surface. The width of the second portion in the first direction increases from the first upper surface toward the second upper surface.

[0020] In one embodiment, adhering ink to the printing pad includes adhering ink to the second side surface of the second portion.

[0021] In one embodiment, adhering ink to a printing pad may include: setting ink on a printing plate; and applying pressure to the printing pad on the printing plate.

[0022] In an embodiment, the method may further include: adhering additional ink to an additional printing pad; and pressing the additional printing pad with the adhering additional ink onto a window base portion having a printed pattern to provide an additional printed pattern on the printed pattern.

[0023] In one embodiment, the additional printing pad may include a third portion and a fourth portion disposed on the third portion. The width of the fourth portion in the first direction may decrease as the distance from the third portion increases, or the width of the fourth portion in the first direction may remain the same as the distance from the third portion increases.

[0024] In one embodiment, adhering additional ink to an additional printing pad may include: setting the additional ink on an additional printing plate; and applying pressure to the additional printing pad on the additional printing plate. The ink may be provided as a plurality of patterns spaced apart by a first interval on the printing plate. The additional ink may be provided as a plurality of patterns spaced apart by a second interval on the additional printing plate. The second interval may be smaller than the first interval.

[0025] In one embodiment, the window base portion may include a main transmissive portion extending in a plane defined by a first direction and a second direction. At least one side transmissive portion extends from the main transmissive portion and is curved to a predetermined curvature. The angle formed by the end of the at least one side transmissive portion relative to the plane of the main transmissive portion may be in the range of about 90° or greater.

[0026] In an embodiment of the present invention, a method for manufacturing a printed pad includes providing a mold having a first opening and a second opening, the first opening having a first width in a first direction, and the second opening having a second width in the first direction that is smaller than the first width. An elastic material is provided into each of the first and second openings. The elastic material is then dried. The second width of the second opening may increase with increasing distance from the first opening.

[0027] In one embodiment, providing the elastic material may include: providing a first elastic material into a second opening; and providing a second elastic material into a first opening. The first elastic material may have a lower hardness than the second elastic material.

[0028] In one embodiment, the dried elastic material may include: a first elastic material dried and provided into the second opening; and a second elastic material dried and provided into the first opening.

[0029] According to an embodiment of the present invention, a system for manufacturing a window for a display device includes a printing pad configured to provide a printed pattern on the window. The printing pad includes: a first portion having a bottom surface and a first upper surface; and a second portion disposed on the first upper surface and including a second upper surface facing the first upper surface and a second side surface connecting the first and second upper surfaces. The angle of the second side surface relative to a direction perpendicular to the bottom surface is in the range of about 10° to about 12°. The window includes a window base portion having a main transmissive portion extending in a plane defined by a first direction and a second direction intersecting the first direction. At least one side transmissive portion extends from the main transmissive portion and is curved to a predetermined curvature. The angle formed by the end of the at least one side transmissive portion relative to the plane of the main transmissive portion is in the range of about 90° or greater. The second side surface is configured to provide a printed pattern on at least one side transmissive portion of the window base portion when the printing pad is pressed on the window base portion.

[0030] In one embodiment, the additional printing pad is configured to provide an additional printing pattern on a portion of the printing pattern provided on at least one side-transparent portion when pressure is applied to the additional printing pad on the window. The additional printing pad includes a third portion and a fourth portion disposed on the third portion. Attached Figure Description

[0031] 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 embodiments of the inventive concept and, together with the description, serve to explain the principles of the inventive concept. In the drawings:

[0032] Figure 1 This is a perspective view of a display device according to an embodiment of the present invention;

[0033] Figure 2 This is a cross-sectional view of a display device according to an embodiment of the present invention;

[0034] Figure 3 This is an exploded perspective view showing some components of a display device according to an embodiment of the concept of the present invention;

[0035] Figure 4 This is a cross-sectional view showing some elements of a display device according to an embodiment of the present invention;

[0036] Figure 5A and Figure 5B This is a cross-sectional view of a window according to an embodiment of the present invention.

[0037] Figure 6A This is a perspective view of a printed pad according to an embodiment of the present invention.

[0038] Figure 6B This is a cross-sectional view of a printed pad according to an embodiment of the present invention;

[0039] Figures 7A to 7E This is a cross-sectional view showing, sequentially, an embodiment of the invention, of a method for manufacturing a window by printing a backing;

[0040] Figures 8A to 8E This is a cross-sectional view showing, sequentially, an embodiment of the invention, of a method for manufacturing a window by attaching a printed backing;

[0041] Figures 9A to 9D These are cross-sectional views sequentially illustrating a method for manufacturing a printing pad according to an embodiment of the present invention.

[0042] Figures 10A to 10F These are cross-sectional views sequentially illustrating a method for manufacturing a printing pad according to an embodiment of the present invention.

[0043] Figure 11A This is a cross-sectional view of an electronic device illustrated according to an embodiment of the present invention;

[0044] Figure 11B This is a cross-sectional view of an electronic device illustrated according to an embodiment of the present invention;

[0045] Figure 12 This is an exploded perspective view of an electronic device according to an embodiment of the present invention;

[0046] Figure 13A This is a perspective view of a window according to an embodiment of the concept of the present invention;

[0047] Figure 13BThis is a cross-sectional view of a window according to an embodiment of the present invention.

[0048] Figure 14A yes Figure 13B An enlarged sectional view of region AA';

[0049] Figure 14B yes Figure 13B An enlarged sectional view of region AA';

[0050] Figure 15A This is a cross-sectional view of a printing pad according to an embodiment of the present invention; and

[0051] Figure 15B This is an enlarged cross-sectional view of a portion of a printing pad according to an embodiment of the present invention. Detailed Implementation

[0052] In this disclosure, when an element (or region, layer, portion, etc.) is referred to as "on" another element, "connected to" or "attached to" another element, this means that the element can be directly disposed on / directly connected to / directly attached to the other element, or that a third element can be disposed between the element and the other element. When an element (or region, layer, portion, etc.) is referred to as "directly on" another element, "directly connected to" or "directly attached to" another element, no third element (e.g., an intermediate element) may be disposed between the element and the other element.

[0053] The same reference numerals denote the same elements. Furthermore, for ease of explanation, the thickness, scale, and dimensions of elements may be exaggerated in the accompanying drawings.

[0054] The term “and / or” includes any and all combinations that may define one or more of the contents of the relevant elements.

[0055] It will 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 scope of the inventive concept, a first element may be referred to as a second element, and a second element may be referred to as a first element in a similar manner. Singular terms may include plural forms unless the context clearly indicates otherwise.

[0056] Furthermore, terms such as "below," "down," "above," and "up" are used to describe the relationships between the elements shown in the accompanying drawings. These terms are used as relative concepts and are described with reference to the directions indicated in the drawings.

[0057] Unless otherwise specified, 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 the inventive concept pertains. It will also be understood that terms 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 in an ideal or overly formal sense unless expressly defined herein.

[0058] It should be understood that the terms “comprising” or “having” are intended in this disclosure to 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.

[0059] In the following description, embodiments of the inventive concept will be described with reference to the accompanying drawings.

[0060] Figure 1 This is a perspective view of a display device according to an embodiment of the present invention. Figure 2 This is a cross-sectional view of a display device according to an embodiment of the present invention.

[0061] refer to Figure 1 and Figure 2 The display device 100 can be an electricalally activated device. For example, in embodiments, the display device 100 can be a mobile phone, tablet computer, car navigation system unit, game console, or wearable device. However, embodiments of the present invention are not limited thereto, and the display device 100 can be various small, medium, or large electronic devices. Figure 1 In this embodiment, for ease of explanation, the display device 100 is shown as a mobile phone.

[0062] In the display device 100, a display area can be defined. The display device 100 can display images through the display area and can receive external input. The display area may include a main display area 100AM, a first sub-display area 100AS1, and a second sub-display area 100AS2. The display device 100 may include a non-display area 100AN adjacent to the display area. Figure 1 As shown, the non-display area 100AN may have a shape that surrounds the edge of the display area. However, embodiments of the present invention are not limited to this. For example, in an embodiment, the non-display area 100AN may be defined as being adjacent only to the first sub-display area 100AS1 and the second sub-display area 100AS2.

[0063] like Figure 1As shown in the embodiments, the main display area 100AM can extend substantially in a plane defined by a first direction DR1 and a second direction DR2 intersecting the first direction DR1. For example, the main display area 100AM can have a relatively long side extending longitudinally in the second direction DR2 and a relatively short side extending longitudinally in the first direction DR1. However, embodiments of the inventive concept are not limited to this, and the main display area 100AM can have various different polygonal, circular, or irregular shapes. The third direction DR3, which intersects both the first direction DR1 and the second direction DR2, can be defined as a third direction of the display device 100, which can be the thickness direction of the display device 100. Although the first direction DR1 to the third direction DR3 are shown as perpendicular to each other, embodiments of the inventive concept are not limited to this, and the first direction DR1 to the third direction DR3 can intersect each other at various different angles. Figure 1 Different embodiments are shown, and 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. For example, the main display area 100AM may have a shape that protrudes convexly from the plane defined by the first direction DR1 and the second direction DR2 in the third direction DR3.

[0064] The first sub-display area 100AS1 and the second sub-display area 100AS2 can be curved from the main display area 100AM. In an embodiment, the main display area 100AM, the first sub-display area 100AS1, and the second sub-display area 100AS2 can be adjacent to each other to achieve a continuous display area. Each of the first sub-display area 100AS1 and the second sub-display area 100AS2 can be curved from the main display area 100AM to have a predetermined curvature (e.g., on a third-direction DR3). The curvatures of the first sub-display area 100AS1 and the second sub-display area 100AS2 can be the same or different from each other.

[0065] like Figure 1 As shown in the embodiment, each of the first sub-display area 100AS1 and the second sub-display area 100AS2 extends longitudinally along the second direction DR2 and may be spaced apart from each other in the first direction DR1, and the main display area 100AM is interposed between the first sub-display area 100AS1 and the second sub-display area 100AS2. Each of the first sub-display area 100AS1 and the second sub-display area 100AS2 may be positioned adjacent to a relatively long side of the main display area 100AM.

[0066] Figure 1The embodiment shown illustrates a display device 100 including a main display area 100AM and two sub-display areas (such as a first sub-display area 100AS1 and a second sub-display area 100AS2). However, embodiments of the present invention are not limited thereto. For example, the display device 100 includes a first sub-display area 100AS1 and a second sub-display area 100AS2 positioned adjacent to a relatively long side of the main display area 100AM, and may also include a third sub-display area and / or a fourth sub-display area positioned adjacent to a relatively short side of the main display area 100AM. The third and fourth sub-display areas may be spaced apart along a second direction DR2 and may each extend longitudinally along a first direction DR1.

[0067] Figure 3 This is an exploded perspective view showing some components of a display device according to an embodiment of the present invention.

[0068] refer to 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.

[0069] In one embodiment, window 110 may include an optically transparent insulating material, and window 110 may include glass or plastic. Window 110 may have a multi-layered structure or a single-layered structure.

[0070] Window 110 includes a main transmissive portion 110AM, and a first side transmissive portion 110AS1 and a second side transmissive portion 110AS2 that curve and extend from the main transmissive portion 110AM. In embodiments, each of the first side transmissive portion 110AS1 and the second side transmissive portion 110AS2 may have a predetermined curvature. The curvatures of the first side transmissive portion 110AS1 and the second side transmissive portion 110AS2 may be the same or may be different from each other. However, embodiments of the inventive concept are not limited thereto. For example, the first side transmissive portion 110AS1 and the second side transmissive portion 110AS2 may be planar.

[0071] Each of the first side-transmitting portion 110AS1 and the second side-transmitting portion 110AS2 may extend longitudinally along the second direction DR2 and may be spaced apart from each other in the first direction DR1, with the main transmitting portion 110AM interposed between the first side-transmitting portion 110AS1 and the second side-transmitting portion 110AS2. In one embodiment, each of the first side-transmitting portion 110AS1 and the second side-transmitting portion 110AS2 may be positioned adjacent to a relatively longer side of the main transmitting portion 110AM. In another embodiment, the window 110 may further include a third side-transmitting portion and a fourth side-transmitting portion positioned adjacent to a relatively shorter side of the main transmitting portion 110AM. Each of the third side-transmitting portion and the fourth side-transmitting portion may extend longitudinally along the first direction DR1 and may be spaced apart from each other in the second direction DR2, with the main transmitting portion 110AM interposed between the third side-transmitting portion and the fourth side-transmitting portion.

[0072] like Figure 3 As shown in the embodiments, the display panel 120 is disposed below the window 110 and can be adhered to the window 110. The display panel 120 can be an element that substantially generates an image. In embodiments, the display panel 120 can be a light-emitting display panel. For example, the display panel 120 can be an organic light-emitting display panel, a quantum dot light-emitting display panel, a micron LED display panel, or a nano LED display panel. However, the embodiments of the present invention are not limited to this, and the display panel 120 can be various other types of display panels.

[0073] 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 arranged in a second direction DR2. For example, as... Figure 3 As shown in the embodiment, 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 (e.g., an integral shape). In the embodiment, the width WT1 of the first portion 121 (e.g., its length in the first direction DR1) may be greater than the width WT2 of the second portion 122 (e.g., its length in the first direction DR1). Therefore, the length of the boundary 120BD between the first portion 121 and the second portion 122 (e.g., in the second direction DR2) (e.g., its length in the first direction DR1) may be less than the width WT1 of the first portion 121.

[0074] The first portion 121 of the display panel 120 may include a main display area 120AM, a first side display area 120AS1, and a second side display area 120AS2. The main display area 120AM, the first side display area 120AS1, and the second side display area 120AS2 can provide an image to the window 110 for the user to view. In an embodiment, the display panel 120 may also have a non-display area surrounding the main display area 120AM, the first side display area 120AS1, and the second side display area 120AS2. The non-display area of ​​the display panel 120 may be the same as the non-display area 100AN of the display device 100 (see...). Figure 1 The corresponding part.

[0075] Window 110 can be adhered to a first portion 121 of display panel 120. In an embodiment, the first portion 121 can be adhered to the main transmissive portion 110AM, the first side transmissive portion 110AS1, and the second side transmissive portion 110AS2. For example, the main display area 120AM can be adhered to the main transmissive portion 110AM, and the first side display area 120AS1 and the second side display area 120AS2 can be adhered to the first side transmissive portion 110AS1 and the second side transmissive portion 110AS2, respectively.

[0076] The second portion 122 may not be adhered to the window 110 and may be bent toward the rear surface of the first portion 121. In one embodiment, a driver chip 130 may be mounted on the second portion 122, and the main circuit board 140 may be adhered to the second portion 122. For example, the driver chip 130 may be a timing control circuit in chip form. However, embodiments of the present invention are not limited thereto. The driver chip 130 may be mounted on a film separate from the display panel 120. In this embodiment, the driver chip 130 may be electrically connected to the display panel 120 via the film.

[0077] Figure 4 This is a cross-sectional view showing some elements of a display device according to an embodiment of the present invention.

[0078] Figure 4 The diagram illustrates the adhesion of window 110 and display panel 120 via adhesive layer 150. In embodiments, adhesive layer 150 may comprise a typical adhesive or pressure-sensitive adhesive. For example, adhesive layer 150 may be a transparent adhesive component, such as a pressure-sensitive adhesive film (PSA), an optically clear adhesive film (OCA), or an optically clear resin (OCR). However, embodiments of the present invention are not limited thereto.

[0079] Window 110 and display panel 120 can be adhered to each other via adhesive layer 150. Corresponding portions of window 110 and display panel 120 can be adhered to each other via adhesive layer 150. For example, in one embodiment, the main transmissive portion 110AM of window 110 can be adhered to the main display area 120AM, with adhesive layer 150 inserted between the main transmissive portion 110AM and the main display area 120AM; the first side transmissive portion 110AS1 of window 110 can be adhered to the first side display area 120AS1, with adhesive layer 150 inserted between the first side transmissive portion 110AS1 and the first side display area 120AS1; and the second side transmissive portion 110AS2 of window 110 can be adhered to the second side display area 120AS2, with adhesive layer 150 inserted between the second side transmissive portion 110AS2 and the second side display area 120AS2.

[0080] Figure 5A This is a cross-sectional view of a window according to an embodiment of the present invention. Figure 5B This is a cross-sectional view of a window according to an embodiment of the present invention. In the following, reference is made to... Figure 5A and Figure 5B Windows 110 and 110', according to embodiments of the present invention, will be described in more detail.

[0081] refer to Figure 5A The window 110 of the embodiment includes a window base portion 111 and a printed pattern 112 printed on the window base portion 111.

[0082] The window base portion 111 includes the main transmission portion 110AM described above, and the side transmission portions that bend and extend from the main transmission portion 110AM as described above. The side transmission portions include a first side transmission portion 110AS1 and a second side transmission portion 110AS2 extending from each side of the main transmission portion 110AM, respectively.

[0083] The main transmission portion 110AM may be substantially parallel to the plane defined by the first direction DR1 and the second direction DR2. In an embodiment, the first side transmission portion 110AS1 and the second side transmission portion 110AS2 may be bent at an angle in the range of about 90° or greater. For example, the bending angle α formed by the ends of the first side transmission portion 110AS1 and the second side transmission portion 110AS2 and the plane defined by the main transmission portion 110AM may be an obtuse angle in the range of about 90° or greater. In an embodiment, each of the first side transmission portion 110AS1 and the second side transmission portion 110AS2 may be bent at an obtuse angle of about 90° or greater relative to the plane defined by the main transmission portion 110AM. The bending angles formed by each of the first side transmission portion 110AS1 and the second side transmission portion 110AS2 relative to the main transmission portion 110AM may be the same or different from each other. For example, in an embodiment, each of the first side transmission portion 110AS1 and the second side transmission portion 110AS2 may have an angle of about 120° or about 160° relative to the main transmission portion 110AM.

[0084] The printed pattern 112 is a colored layer and may include a light-absorbing material. In embodiments, the printed pattern 112 may include a colored organic substance or an opaque metal. For example, the printed pattern 112 may include blue pigment or black pigment. However, embodiments of the present invention are not limited thereto. Display device 100 (see...) Figure 1 The non-display area 100AN (see) Figure 1 () can be defined by printed pattern 112.

[0085] The printed pattern 112 can be set on the outer periphery of the window base portion 111. For example, as... Figures 5A to 5B As shown in the embodiment, a printed pattern 112 or 112' may be disposed on the first side-transmitting portion 110AS1 and the second side-transmitting portion 110AS2. The printed pattern 112 may be disposed aligned with the ends of the first side-transmitting portion 110AS1 and the second side-transmitting portion 110AS2 (which form the ends of the window base portion 111). The printed pattern 112 may be disposed from the ends of the first side-transmitting portion 110AS1 and the second side-transmitting portion 110AS2 to the center portion of the first side-transmitting portion 110AS1 and the second side-transmitting portion 110AS2. The printed pattern 112 may be disposed on each of the first side-transmitting portion 110AS1 and the second side-transmitting portion 110AS2. In the embodiment, the printed pattern 112 may be disposed on a printed backing PRP (see [link to PRP description]). Figure 6A The first side transmission portion 110AS1 and the second side transmission portion 110AS2 are printed.

[0086] refer to Figure 5BIn the window 110' of the embodiment of the present invention, the printed pattern 112' can be set as multiple layers. The printed pattern 112' may include a basic printed pattern 112-1 and an additional printed pattern 112-2 disposed on the basic printed pattern 112-1.

[0087] The basic printed pattern 112-1 can be configured to align with the ends of the first side transmissive portion 110AS1 and the second side transmissive portion 110AS2 (which form the end of the window base portion 111).

[0088] A base printed pattern 112-1 can be disposed from the ends of the first side-transmitting portion 110AS1 and the second side-transmitting portion 110AS2 to the center portion of the first side-transmitting portion 110AS1 and the second side-transmitting portion 110AS2. An additional printed pattern 112-2 can be disposed in an area spaced inwardly from the ends of the first side-transmitting portion 110AS1 and the second side-transmitting portion 110AS2. A portion of the additional printed pattern 112-2 overlaps with the base printed pattern 112-1, and the remainder can be positioned inwardly so as not to overlap with the base printed pattern 112-1. The base printed pattern 112-1 can be disposed using a printed backing PRP (see [link to PRP description]). Figure 6A The additional printed pattern 112-2 can be printed on the first side transmissive portion 110AS1 and the second side transmissive portion 110AS2. The additional printed pattern 112-2 can be printed using the additional printed backing PRP-a described later (see [link to PRP-a]). Figure 8A The printed pattern 112-1 is printed on the base printed pattern 112-1. The window 110' of the embodiment of the present invention includes a printed pattern 112' with a double-layer structure, such that the printed pattern 112' can be formed on the first side transmissive portion 110AS1 and the second side transmissive portion 110AS2, and there are no unprinted portions for the window 110' with a large curvature angle α in the range of about 150° or greater.

[0089] Figure 6A This is a perspective view of a printed pad according to an embodiment of the present invention. Figure 6B This is a cross-sectional view of a printed pad according to an embodiment of the present invention.

[0090] refer to Figure 6A and Figure 6B According to the embodiment, the printed pad PRP includes a first part PP1 and a second part PP2.

[0091] The first portion PP1 includes a bottom surface BS extending in a plane defined by a first direction DR1 and a second direction DR2, a first upper surface US1 facing the bottom surface BS, and a first side surface LS1 connecting the bottom surface BS and the first upper surface US1. The bottom surface BS may be a substantially flat surface. At least a portion of the first side surface LS1 may be curved. For example, the first side surface LS1 may be a naturally curved surface within the range of maintaining the shape of the printed pad PRP. The first upper surface US1 may be an inner surface on which the second portion PP2 is disposed. The first side surface LS1 may include a first sub-side surface LS1-1 with a relatively steep slope and a second sub-side surface LS1-2 with a relatively gentle slope. The first sub-side surface LS1-1 extends from the bottom surface BS, and the second sub-side surface LS1-2 may be positioned closer to the first upper surface US1 than the first sub-side surface LS1-1. For example, in an embodiment, the second sub-side surface LS1-2 may be directly connected to the first upper surface US1.

[0092] The first portion PP1 may be a portion having a width (e.g., a length in the first direction DR1) that decreases in the upward direction (e.g., in the direction toward the second portion PP2). For example, the first portion PP1 may be a portion having a width (e.g., a length in the first direction DR1) that decreases from the bottom surface BS toward the first upper surface US1. In an embodiment, the first portion PP1 may be a portion having a tapered angle in the range of about 90° or less. In an embodiment, the angle formed by the first side surface LS1 of the first portion PP1 relative to the bottom surface BS may be in the range of about 90° or less.

[0093] The second portion PP2 is disposed on the first portion PP1 (e.g., directly disposed on the first portion PP1 in a third direction DR3). The second portion PP2 has an integral shape with the first portion PP1, and the second portion PP2 may extend in an upward direction of the first portion PP1 (e.g., in a direction away from the first portion PP1). The second portion PP2 may have a shape that protrudes from the first upper surface US1 of the first portion PP1 in a third direction DR3 (which intersects with the first direction DR1 and the second direction DR2).

[0094] The first portion PP1 and the second portion PP2 can be distinguished based on a boundary point where the slope changes abruptly. For example, on the second sub-side surface LS1-2 of the first portion PP1, the first portion PP1 and the second portion PP2 can be distinguished based on a boundary point where the slope changes abruptly relative to the second side surface LS2. The plane of the boundary between the first portion PP1 and the second portion PP2 (e.g., the plane defined by the first direction DR1 and the second direction DR2) can be the first upper surface US1.

[0095] The second part PP2 includes a second upper surface US2 facing the first upper surface US1, and a second side surface LS2 connecting the second upper surface US2 and the first upper surface US1. Figure 6A and Figure 6B As shown in the embodiments, the second upper surface US2 can be a curved surface. For example, the second upper surface US2 can have a shape that protrudes in a third direction DR3 (e.g., in a direction away from the first portion PP1). The second side surface LS2 can be a surface that has a steeply changing slope from and extends from the second sub-side surface LS1-2. The second side surface LS2 can be the portion on which ink is transferred in the window manufacturing method described later. At least a portion of the second side surface LS2 can be curved. In the embodiments, the second upper surface US2 and the second side surface LS2 can be naturally curved surfaces within the range of maintaining the shape of the printed pad PRP.

[0096] In an embodiment, the planar area of ​​the bottom surface BS of the first portion PP1 (e.g., the area in the plane defined by the first direction DR1 and the second direction DR2) may be greater than the planar area of ​​the first upper surface US1 (e.g., the area in the plane defined by the first direction DR1 and the second direction DR2). The planar area of ​​the second upper surface US2 (e.g., the area in the plane defined by the first direction DR1 and the second direction DR2) may be greater than the planar area of ​​the first upper surface US1.

[0097] The second portion PP2 is a portion having a width that increases in the upward direction (e.g., a length in the first direction DR1). For example, the second portion PP2 is a portion having a width (e.g., a length in the first direction DR1) that increases from the first upper surface US1 (e.g., in the third direction DR3) toward the second upper surface US2. In an embodiment, the second portion PP2 may be a portion having a tapered angle greater than about 90°. The angle formed by the second side surface LS2 of the second portion PP2 relative to the bottom surface BS may be greater than about 90°.

[0098] The angle β formed by the second side surface LS2 of the second portion PP2 relative to a reference line perpendicular to the bottom surface BS (e.g., extending on the third direction DR3) can be in the range of about 10° to about 12°. In an embodiment, the angle β formed by the second side surface LS2 relative to the reference line perpendicular to the bottom surface BS can be about 10°. In an embodiment where the angle β formed by the second side surface LS2 relative to the reference line perpendicular to the bottom surface BS is less than about 10°, when the printed pattern 112 (see...) Figure 5A ) is formed on window 110 by printing a PRP backing (see Figure 5AThe first side transmission portion 110AS1 and the second side transmission portion 110AS2 (see) Figure 5A When printing on the first side transmissive portion 110AS1 and the second side transmissive portion 110AS2, unprinted portions may exist at the ends. In embodiments where the angle β formed by the second side surface LS2 relative to a reference line perpendicular to the bottom surface BS is greater than approximately 12°, in the process of forming the printed pad PRP, during the process of forming the mold PM (see...) Figure 9A The printed PRP may be damaged during the removal of the printed PRP.

[0099] The printed backing PRP according to an embodiment of the invention includes a second portion PP2 having a width (e.g., a length in the first direction DR1) that increases in an upward direction (e.g., from the first upper surface US1 toward the second upper surface US2 in a third direction DR3). For example, the second portion PP2 may have a taper angle greater than about 90°, and the second side surface LS2 of the second portion PP2 may be the portion on which ink is transferred in a window manufacturing method. The printed backing PRP according to the embodiment prints a printed pattern on a target window through the second side surface LS2 of the second portion PP2, which has an inverted cone shape with a taper angle greater than about 90°, thereby allowing the printed pattern to be printed on the translucent portion of the window having a curvature angle of about 90° or greater.

[0100] Comparative printing pads do not include a printing portion with a taper angle greater than approximately 90°, which may lead to defects when printing patterns on the translucent portion of a window with a curvature angle of approximately 90° or greater. These defects could include damage due to interference with the translucent portion, or unprinted portions at the ends of the translucent portion due to insufficient expansion of the printing pad. The printing pad according to an embodiment of the present invention prints the pattern on the translucent portion of the target window through a second side surface of a second portion with a taper angle greater than approximately 90°, thereby minimizing interference with the translucent portion, ensuring clear printing, and eliminating any unprinted portions at the ends of the translucent portion. Therefore, the reliability of the process for printing patterns on windows can be improved, and the defect rate of windows manufactured using the printing pad can be reduced.

[0101] In some embodiments, each of the first portion PP1 and the second portion PP2 may comprise at least one material selected from rubber and silicone resin. For example, each of the first portion PP1 and the second portion PP2 may comprise cured silicone resin. However, embodiments of the present invention are not limited thereto.

[0102] In some embodiments, the first portion PP1 and the second portion PP2 may comprise the same material. The first portion PP1 and the second portion PP2 may be integrally formed from silicone resins having the same hardness. However, the embodiments of the present invention are not limited thereto. For example, in some embodiments, the first portion PP1 and the second portion PP2 may comprise different materials from each other. In some embodiments, the first portion PP1 and the second portion PP2 may be formed from silicone resins having different hardnesses from each other using separate processes.

[0103] In an embodiment, the first portion PP1 and the second portion PP2 may comprise materials having different hardnesses than each other. The first portion PP1 and the second portion PP2 may comprise silicone resins having different hardnesses than each other. In an embodiment, the hardness of the first portion PP1 may be in the range of about 20 sa to about 35 sa. For example, the hardness of the first portion PP1 may be in the range of about 25 sa to about 30 sa. The hardness of the second portion PP2 may be in the range of about 7 sa to about 15 sa. The hardness of the second portion PP2 may be in the range of about 10 sa to about 12 sa. Because the second portion PP2 has a lower hardness than the first portion PP1, when printing the PRP pad on window 110 (see...) Figure 5A In the process of printing the pattern 112 on the printing plate, the expansion rate of the second part PP2 can be greater than that of the first part PP1. Since the expansion rate of the second part PP2 of the printed pattern 112 is basically large, the printed pad PRP of the embodiment of the present invention can accurately print the pattern 112 onto the ends of the curved first side transmission portion 110AS1 and the second side transmission portion 110AS2.

[0104] In an implementation, the first portion PP1 and the second portion PP2 may have the same or different heights (e.g., lengths on a third-direction DR3). The first portion PP1 may have the same height as the second portion PP2, or the first height h1 of the first portion PP1 may be greater than the second height h2 of the second portion PP2. In an implementation, the ratio of the first height h1 to the second height h2 may be in the range of approximately 5:5 to approximately 7:3.

[0105] Figures 7A to 7E This is a cross-sectional view sequentially illustrating a method for manufacturing a window by printing a backing, according to an embodiment of the present invention. In the following, with reference to... Figures 7A to 7E When describing a method for manufacturing a window according to an embodiment of the present invention, the same reference numerals are given to the same elements as those described above, and detailed descriptions thereof will be omitted for ease of explanation.

[0106] refer to Figures 7A to 7CThe window manufacturing method according to an embodiment includes: adhering ink INK to a printed pad PRP. In an embodiment, the ink INK is disposed and provided on a printing plate BP. The printed pad PRP can be pressurized against the printing plate BP (e.g., the printed pad PRP is directly pressurized onto the printing plate BP) to transfer the ink INK from the printing plate BP to the printed pad PRP. The ink INK transferred and adhered to the printed pad PRP can adhere to a second side surface LS2 in a second portion PP2 of the printed pad PRP.

[0107] In one embodiment, the ink INK can be provided as a plurality of patterns spaced apart by a first interval d1 (e.g., a length in the first direction DR1). The first interval d1 can be set to a predetermined value such that the ink INK is printed onto window 110 (see [link to document]) via a printing pad PRP. Figure 5A ) to form a printed pattern 112 (see Figure 5A ).

[0108] refer to Figures 7C to 7E The window manufacturing method according to the embodiment includes: pressing a printed backing PRP coated with ink INK' onto a window base portion 111 to provide a printed pattern 112 to the window base portion 111. For example, the ink INK' may be... Figure 7B A portion of the ink INK shown is transferred and adhered to the printing pad PRP after being pressed against the printing plate BP. The ink INK' can be supplied to the window base portion 111 while being adhered to the second side surface LS2.

[0109] The window base portion 111 may include a first side transmission portion 110AS1 and a second side transmission portion 110AS2 that are bent at an angle of about 90° or greater (see [link]). Figure 5A ).like Figure 7B As shown in the embodiment, a window base portion 111 may be provided and disposed within a printing fixture JG. The printing fixture JG may include a bottom portion and sidewall portions extending from the bottom portion toward a third direction DR3. In the embodiment, at least a portion of the first side-transmitting portion 110AS1 and the second side-transmitting portion 110AS2 of the window base portion 111 may be configured to directly contact the sidewall portions of the printing fixture JG.

[0110] A printing pad PRP with ink INK' adhered to it can be pressed against the window base portion 111 provided in the printing fixture JG, thereby transferring the ink INK' onto the window base portion 111, such as onto the ends of the first side transmission portion 110AS1 and the second side transmission portion 110AS2 (which form the ends of the window base portion 111). The shape of the second portion PP2 with ink INK' adhered to it can be changed by pressure applied from the upper portion of the printing pad PRP (such as the first portion PP1). For example, as Figure 7D As shown in the embodiment, the second portion PP2 can be expanded by pressure in the first direction DR1 and the opposite direction, thereby transferring ink INK' onto the first side transmissive portion 110AS1 and the second side transmissive portion 110AS2 of the window base portion 111. Thereafter, the transferred ink INK' forms a printed pattern 112, and the printed backing PRP can be moved in the upward direction and removed. With the formation of the printed pattern 112, a window 110 having the printed pattern 112 can be formed (see...). Figure 5A ).

[0111] In a window manufacturing method according to an embodiment of the present invention, a printed pattern is printed on a window base portion using a printed backing comprising a second portion having a conical angle greater than approximately 90°, such that the printed pattern can be formed on a window having a curvature angle of approximately 90° or greater. In another embodiment of the window manufacturing method according to the present invention, the printed pattern is printed on a side-transmitting portion of the window base portion using a second side surface of the second portion having a conical angle greater than approximately 90°, such that interference with the side-transmitting portion is minimized, and the printed pattern can be printed such that there are no unprinted portions at the ends of the side-transmitting portion. Therefore, the reliability of the process for printing the printed pattern on the window can be improved, and the defect rate of windows manufactured using a printed backing can be reduced.

[0112] Figures 8A to 8E This is a cross-sectional view showing, sequentially, an embodiment of the invention, of a method for manufacturing a window by attaching a printed backing. Figures 8A to 8E It is shown in sequence. Figure 5B A cross-sectional view of the process of forming the additional printed pattern 112-2 in window 110' shown. Figure 5B In window 110', the basic printed pattern 112-1 can be viewed through... Figures 7A to 7E The process shown is formed. For example, Figure 7E The printed pattern 112 shown in the embodiment can be a basic printed pattern 112-1. In the following, the implementation of... Figures 7A to 7E After the process shown forms the basic printed pattern 112-1, it is then... Figures 8A to 8E The process shown forms additional printed patterns 112-2.

[0113] refer to Figures 8A to 8E In the window manufacturing method according to the embodiment, the additional printed pattern 112-2 can be printed by adding an additional printed backing PRP-a.

[0114] The additional printed backing PRP-a may include a third portion PP1-a and a fourth portion PP2-a. In an embodiment, the third portion PP1-a may include the first portion PP1 of the printed backing PRP (see [link to embodiment]). Figure 6B Shapes similar to those of other shapes. Figure 8A As shown, the fourth portion PP2-a may be disposed on the third portion PP1-a. The fourth portion PP2-a may have a shape extending into the third portion PP1-a. The fourth portion PP2-a may have a shape protruding from the third portion PP1-a in the third direction DR3. In an embodiment, the width of the fourth portion PP2-a (e.g., its length in the first direction DR1) may remain the same as the distance from the third portion PP1-a in the third direction DR3 increases. However, embodiments of the inventive concept are not limited thereto. For example, in an embodiment, the width of the fourth portion PP2-a (e.g., its length in the first direction DR1) may decrease as the distance from the third portion PP1-a in the third direction DR3 increases. For example, unlike the second portion PP2 of the printed pad PRP, the fourth portion PP2-a may have a shape with a tapered angle of about 90° or less. The fourth portion PP2-a may include an additional upper surface US2-a having a protruding shape in the third direction DR3.

[0115] refer to Figures 8A to 8C A window manufacturing method according to an embodiment of the present invention may include: adhering an additional ink INK-a to an additional printed pad PRP-a. The additional ink INK-a is disposed and provided on an additional printed plate BP-a. Pressure may be applied to the additional printed pad PRP-a against the additional printed plate BP-a to transfer the additional ink INK-a from the additional printed plate BP-a to the additional printed pad PRP-a. The additional ink INK-a transferred and adhered to the additional printed pad PRP-a may be firmly adhered to the additional upper surface US2-a in the fourth portion PP2-a of the additional printed pad PRP-a.

[0116] like Figure 8A As shown in the embodiment, the additional ink INK-a can be provided as a plurality of patterns spaced apart by a second interval d2 (e.g., the length in the first direction DR1). The second interval d2 can be set to a predetermined value such that the additional ink INK-a is printed on window 110' (see [reference]) via the additional printing pad PRP-a. Figure 5BOn top of this, to form additional printed patterns 112-2 (see...) Figure 5B In an implementation, the second interval d2 may have a larger spacing than the first interval d1 (see [link to implementation]). Figure 7A The second interval d2 has a smaller value than the first interval d1, so the additional printed pattern 112-2 can be positioned further inside the window base portion 111 compared to the base printed pattern 112-1. For example, only a portion of the additional printed pattern 112-2 can overlap with the base printed pattern 112-1.

[0117] refer to Figures 8C to 8E According to an embodiment of the present invention, a window manufacturing method includes: pressing an additional printed backing PRP-a with additional ink INK-a' adhered to it to provide an additional printed pattern 112-2 to a window base portion 111. The additional ink INK-a' can be provided to the window base portion 111 simultaneously with being adhered to an additional upper surface US2-a.

[0118] The additional ink INK-a' can be transferred from the additional printing pad PRP-a to the base printed pattern 112-1 already printed on the window base portion 111. The window base portion 111 can be disposed inside the printing jig JG. When pressure is applied to the additional printing pad PRP-a, the fourth portion PP2-a expands under the applied pressure, thereby transferring the additional ink INK-a' adhered to the additional upper surface US2-a to the base printed pattern 112-1. Thereafter, the transferred additional ink INK-a' forms the additional printed pattern 112-2, and the additional printing pad PRP-a can be moved in the upward direction and removed. With the formation of the additional printed pattern 112-2, a printed pattern 112' including a double-layer structure can be formed (see...). Figure 5B ) window 110' (see Figure 5B ).

[0119] Figures 9A to 9D These are cross-sectional views sequentially illustrating a method for manufacturing a printing pad according to an embodiment of the present invention. In the following, with reference to... Figures 9A to 9D When describing a method for manufacturing printed pads (PRP) according to an embodiment of the present invention, the same reference numerals are given to the same elements as those described above, and detailed descriptions thereof will be omitted for ease of explanation.

[0120] Let's refer to each other. Figure 6B , Figure 9A and Figure 9BAccording to an embodiment, a method for manufacturing a printed backing pad (PRP) may include: providing a mold PM having a first opening MOP1 and a second opening MOP2; and providing an elastic material SM into the first opening MOP1 and the second opening MOP2 defined in the mold PM.

[0121] The first opening MOP1 may have a shape corresponding to the first portion PP1 of the printed PRP. The second opening MOP2 may have a shape corresponding to the second portion PP2 of the printed PRP. For example, the first opening MOP1 may have a shape in which its width (e.g., its length in the first direction DR1) decreases as the distance from the entrance side of the mold PM increases, and the second opening MOP2 may have a shape in which its width (e.g., its length in the first direction DR1) increases as the distance from the entrance side of the mold PM increases. The first width of the first opening MOP1 (e.g., its length in the first direction DR1) may be greater than the second width (which is the width of the second opening MOP2) (e.g., its length in the first direction DR1).

[0122] An elastic material SM can be provided to fill both the first opening MOP1 and the second opening MOP2. In an embodiment, the elastic material SM may include rubber or silicone. The elastic material SM provided inside the first opening MOP1 and the second opening MOP2 may be referred to as the preliminary printed pad PRP-P.

[0123] Let's refer to each other. Figure 6B and Figures 9B to 9D A method for manufacturing a printed pad PRP according to an embodiment may include: drying a preliminary printed pad PRP-P provided inside a first opening MOP1 and a second opening MOP2. In an embodiment, the preliminary printed pad PRP-P may be dried by heating. The preliminary printed pad PRP-P may be dried by heating to form... Figure 9C The printed pad PRP shown is an example. During the drying process of the initial printed pad PRP-P, its volume can be reduced so that the printed pad PRP can be separated from the sidewalls defining the first opening MOP1 and the second opening MOP2. Thereafter, the printed pad PRP can be removed from the mold PM. The printed pad PRP formed using the mold PM according to the embodiment may include a first portion PP1 corresponding to the shape of the first opening MOP1 and a second portion PP2 corresponding to the shape of the second opening MOP2.

[0124] Figures 10A to 10F These are cross-sectional views sequentially illustrating a method for manufacturing a printing pad according to an embodiment of the present invention. In the following, with reference to... Figures 10A to 10FWhen describing a method for manufacturing printed pads (PRP) according to an embodiment of the present invention, the same reference numerals are given to the same elements as those described above, and detailed descriptions thereof will be omitted for ease of explanation.

[0125] refer to Figure 6B and Figures 10A to 10F The method for manufacturing a printed backing pad (PRP) according to an embodiment may include: forming a second portion (PP2) using a first elastic material (SM1); and forming a first portion (PP1) using a second elastic material (SM2). That is, the first portion (PP1) and the second portion (PP2) may be formed using different materials in different processes.

[0126] The first elastic material SM1 and the second elastic material SM2 can be different materials. In an embodiment, the first elastic material SM1 and the second elastic material SM2 can be silicone resins having different hardnesses. For example, in an embodiment, the first elastic material SM1 can be a silicone resin having a hardness in the range of about 7 sh A to about 15 sh A. The first elastic material SM1 can be a silicone resin having a hardness in the range of about 10 sh A to about 12 sh A. The second elastic material SM2 can be a silicone resin having a hardness in the range of about 20 sh A to about 35 sh A. The second elastic material SM2 can be a silicone resin having a hardness in the range of about 25 sh A to about 30 sh A.

[0127] Let's refer to each other. Figure 6B , Figure 10A and Figure 10B A method for manufacturing a printed backing PRP according to an embodiment may include providing a first elastic material SM1 into a second opening MOP2. The first elastic material SM1 may be provided to fill the interior of the second opening MOP2. In an embodiment, the first elastic material SM1 may only fill the second opening MOP2 and may not be provided inside the first opening MOP1. The first elastic material SM1 provided inside the second opening MOP2 may be referred to as a first preliminary pattern PRP-P1.

[0128] Let's refer to each other. Figure 6B , Figure 10B and Figure 10C A method for manufacturing a printed backing PRP according to an embodiment may include drying a first preliminary pattern PRP-P1 provided inside a second opening MOP2. In an embodiment, the first preliminary pattern PRP-P1 may be dried by heating. Figures 10B to 10CAs shown, the first preliminary pattern PRP-P1 can be dried by heating to form the second preliminary portion PP2-P. In the process of drying the first preliminary pattern PRP-P1, its volume can be reduced, allowing the second preliminary portion PP2-P to separate from the sidewall defining the second opening MOP2.

[0129] Let's refer to each other. Figure 6B , Figure 10C and Figure 10D A method for manufacturing a printed backing PRP according to an embodiment may include: providing a second elastic material SM2 into a first opening MOP1. The second elastic material SM2 may be provided to fill the interior of the first opening MOP1. The second elastic material SM2 may be provided on a second preliminary portion PP2-P disposed in a second opening MOP2 to fill the first opening MOP1. For example, the second elastic material SM2 may directly contact the upper portion of the second preliminary portion PP2-P inside the second opening MOP2. The second elastic material SM2 provided inside the first opening MOP1 may be referred to as a second preliminary pattern PRP-P2.

[0130] Let's refer to each other. Figure 6B and Figures 10D to 10F A method for manufacturing a printed pad PRP according to an embodiment may include drying a second preliminary pattern PRP-P2 provided inside a first opening MOP1. In an embodiment, the second preliminary pattern PRP-P2 may be dried by heating. The second preliminary pattern PRP-P2 may be dried by heating to form a first portion PP1. The first portion PP1 formed by the heated and dried second preliminary pattern PRP-P2 may be bonded to a second portion PP2 disposed below it to form a printed pad PRP. In the process of drying the second preliminary pattern PRP-P2, its volume may be reduced, such that the first portion PP1 may be separated from the sidewall defining the first opening MOP1. Thereafter, the printed pad PRP may be removed from the mold PM. The printed pad PRP formed using a mold PM according to an embodiment of the present invention may include a first portion PP1 with a shape corresponding to the first opening MOP1 and a second portion PP2 with a shape corresponding to the second opening MOP2. Since the second elastic material SM2 forming the first portion PP1 and the first elastic material SM1 forming the second portion PP2 are different, the properties of the first portion PP1 and the second portion PP2 may be different. For example, the first part PP1 and the second part PP2 can have different hardnesses. In an embodiment, since the hardness of the second part PP2 is less than that of the first part PP1, the expansion rate of the second part PP2 can be relatively large in the process of printing the pattern through the printing pad PRP, and therefore, the printed pattern can be accurately printed onto the end of the window with the curved side transmissive portion.

[0131] According to an embodiment of the invention, a printed pattern can be formed on a side portion of a window, wherein the side portion is bent at an angle of about 90° or greater, and the printing pad for transferring the printed pattern is prevented from being damaged, thereby increasing the reliability of the process of printing the pattern on the window and reducing the defect rate of windows manufactured by the printing pad.

[0132] Figure 11A This is a cross-sectional view of an electronic device illustrated according to an embodiment of the present invention. Figure 11B This is a cross-sectional view of an electronic device illustrated according to an embodiment of the present invention. Figure 11A and Figure 11B The electronic devices 1000 and 1000-1 shown may include a printed pattern 112 (see Figure 5A ) window 110 (see Figure 5A Furthermore, the printed pattern 112 can be achieved using a printed backing PRP (see embodiment of the invention) according to a conceptual embodiment. Figure 6A It is formed by )

[0133] refer to Figure 11A The electronic device 1000 can be applied to the wearable device 1000WA.

[0134] The electronic device 1000 can display time information, weather information, icons for performing various applications or operations, etc. Users can operate the electronic device 1000 via touch. The electronic device 1000 can be circular in shape.

[0135] refer to Figure 11B The electronic device 1000-1 can be applied to the 1000CA automobile.

[0136] Electronic device 1000-1 can display images and sense external input applied from the outside. For example, electronic device 1000-1 can display various types of information required for driving the car (e.g., navigation information or icons for operating various systems such as air conditioning, heater, audio, and air circulation), or it can display an image of the area behind the car 1000CA. The user can operate electronic device 1000-1 via touch operation.

[0137] Figure 11A and Figure 11B Two application examples of electronic devices 1000 and 1000-1 are shown exemplarily, but embodiments of the inventive concept can be applied without limitation as long as they have a circular area on which an image is displayed.

[0138] Figure 12 This is an exploded perspective view of an electronic device according to an embodiment of the present invention. Figure 12References are shown Figure 11A An exploded perspective view of the described electronic device 1000.

[0139] Electronic device 1000 may include display module DM and window WM.

[0140] The display module DM may include a first area A1 and a second area A2.

[0141] The first region A1 may have a circular shape in a plane. The width of the second region A2 in the first direction DR1 may decrease and then increase as the distance from the first region A1 increases. The portion of the second region A2 with the reduced width may be bent based on a predetermined axis extending in the first direction DR1.

[0142] The display module DM may include the active area AA and the peripheral area NAA.

[0143] The effective area AA can be defined as the area that transmits the image provided from the display module DM. The peripheral area NAA is adjacent to the effective area AA. For example, the peripheral area NAA can surround the effective area AA. The effective area AA can be defined in a portion of the first area A1, and the peripheral area NAA can be defined in the remaining portion of the first area A1 and in the second area A2.

[0144] The second region A2 may include a pad PD positioned adjacent to one end thereto. Although not shown, a circuit board including driving elements may be mounted on the pad PD for electrical connection to the display module DM.

[0145] A window (WM) can be set on the display module (DM) to cover the display module (DM). The window (WM) corresponds to what will be discussed later. Figure 13A , Figure 13B , Figure 14A and Figure 14B The window WM is described in [reference]. For a description of the shape of the window WM, refer to [reference], which will be described later. Figure 13A , Figure 13B , Figure 14A and Figure 14B The description.

[0146] A window (WM) can include a transmissive area (TA) and a border area (BZA).

[0147] The transmissive region TA can transmit images provided by the display module DM. According to an embodiment, at least a portion of the transmissive region TA can correspond to the effective area AA of the display module DM.

[0148] The border area BZA can surround the transmissive area TA. Simultaneously, the border area BZA can be set as an area where a material of a predetermined color is printed on a region of the window WM. That is, through the printed backing PRP conceived in this invention (see...). Figure 6A The printed pattern 112 formed by ) (see Figure 5A The border area BZA of the window WM can be defined. Therefore, the shape of the transmission area TA can be essentially defined by the border area BZA.

[0149] Figure 13A This is a perspective view of a window according to an embodiment of the present invention. Figure 13B This is a cross-sectional view of a window according to an embodiment of the present invention. Figure 14A yes Figure 13B An enlarged sectional view of region AA'. Figure 14B yes Figure 13B An enlarged sectional view of region AA'.

[0150] refer to Figure 13A and Figure 13B The window WM may include a front surface portion FP and a side portion SP extending therefrom.

[0151] The front surface portion FP can be circular in the plane viewed from a third party towards DR3. For example... Figure 13A and Figure 13B As shown, the front surface portion FP can be formed from a flat plate shape extending in the first direction DR1 and the second direction DR2. However, embodiments of the inventive concept are not limited to this, and the front surface portion FP can have curvature. For example, the front surface portion FP can have a shape that protrudes from the side portion SP in a direction opposite to the third direction DR3. Therefore, in this disclosure, the diameter RW of the front surface portion FP refers to the diameter of the front surface portion FP in a plane viewed from the third direction DR3.

[0152] like Figure 13A and Figure 13B As shown, the side portion SP can extend from the front surface portion FP to define a predetermined depth D of the window WM. The depth D of the window WM can be defined as the distance from the virtual surface formed by extending the side portion SP in the first direction DR1 and the second direction DR2, spaced apart from the front surface portion FP, to the inner surface IF of the front surface portion FP. According to this embodiment, the depth D of the window WM can be about 2 mm to about 5 mm.

[0153] like Figure 13B As shown, the side portion SP may include a first side portion SP1 and a second side portion SP2. The first side portion SP1 may be bent from the front surface portion FP to have a curvature. The second side portion SP2 may extend from the first side portion SP1.

[0154] According to one embodiment, the second side portion SP2 can extend from the first side portion SP1 to have a constant slope. However, the embodiments of the present invention are not limited to this, and the second side portion SP2 can have a shape with a curvature smaller than that of the first side portion SP1.

[0155] The printed pad PRP of this invention (see Figure 6A Ink INK can be applied in a window WM with a predetermined depth D (see...) Figure 7A The ink is transferred to the inner surface IS of window WM. Within the inner surface IF of the front surface portion FP, the inner surface IS1 of the first side portion SP1, and the inner surface IS2 of the second side portion SP2, depending on the area to which ink INK is transferred, a printing pattern 112 can be set (see...). Figure 5A ).

[0156] Printed PRP pads conceived according to the present invention (see Figure 6A ) can be used to make ink INK (see Figure 7A Transfer to window WM to form the preset printing pattern 112 (see Figure 5A ) and there will be no unattached ink (see Figure 7A (part of)

[0157] Figure 13A and Figure 13B The thickness of the window WM is shown to be uniform, but the embodiments of the present invention are not limited to this, and the thickness of the window WM can vary between different regions. For example, the thickness of the front surface portion FP can be greater than or less than the thickness of the side portion SP. Furthermore, the thickness of the window WM can gradually change from the front surface portion FP to the side portion SP.

[0158] Figure 14A and Figure 14B The window WM (see) is shown Figure 13B An enlarged view of the first side portion SP1. The shape of the first side portion SP1 will be described in detail below.

[0159] refer to Figure 14A The inner surface IS1 of the first side portion SP1 of window WM can have multiple curvatures in the height direction of the first side portion SP1 (i.e., in the third direction DR3). For example, the inner surface IS1 of the first side portion SP1 can have increasing curvature from the second side portion SP2 to the front surface portion FP. That is, one end portion of the first side portion SP1 adjacent to the front surface portion FP can have a larger curvature than the other end portion of the first side portion SP1 adjacent to the second side portion SP2.

[0160] At this time, as Figure 14AAs shown, the radius of curvature of one end portion of the first side portion SP1 can be defined as a first radius of curvature R1, and the radius of curvature of the other end portion of the first side portion SP1 can be defined as a second radius of curvature R2. The first radius of curvature R1 can be smaller than the second radius of curvature R2.

[0161] Figure 14A It is shown that the curvature of one end portion of the first side portion SP1 is the largest, and the curvature of the other end portion of the first side portion SP1 is the smallest; however, the embodiments of the present invention are not limited to this. For example, the curvature of one end portion of the first side portion SP1 may be the smallest, and the curvature of the other end portion of the first side portion SP1 may be the largest, or the curvature of the middle portion of the first side portion SP1 may be the largest.

[0162] Figure 14A The curvature of the inner surface IS1 of the first side portion SP1 is shown to gradually change along the third direction DR3, but the embodiments of the present invention are not limited thereto. For example, the inner surface IS1 of the first side portion SP1 can be divided into a region having a first radius of curvature R1 and a region having a second radius of curvature R2.

[0163] refer to Figure 14B ,and Figures 13A to 14A Unlike the first side portion SP1 shown, the first side portion SP1' according to the embodiment can have a constant curvature in the height direction of the first side portion SP1' (i.e., in the third direction DR3). In this case, the radius of curvature of the inner surface IS1' of the first side portion SP1' can be defined as the third radius of curvature R3.

[0164] Figure 15A This is a cross-sectional view of a printed pad according to an embodiment of the present invention. Figure 15B This is an enlarged cross-sectional view of a portion of a printing pad according to an embodiment of the present invention. Figure 15A and Figure 15B A cross-section of the plane defined by the first direction DR1 and the third direction DR3 is shown.

[0165] refer to Figure 15A The printed backing PRP may include a first portion P1 and a second portion P2. The first portion P1 may include a lower surface LS, and the second portion P2 may include an upper surface US. In the inventive concept, the manufacture of window 110, which will be described later (see...), is... Figure 3 In the method, the first part P1 can be the transfer ink INK to it (see...). Figure 7A (part of)

[0166] The first part P1 may include a curved part PP1 and an inclined part PP2 extending from the curved part PP1.

[0167] The curved portion PP1 may include a lower surface LS and a first side surface SS1. The first side surface SS1 may be a portion of the side surface SS of the printed backing PRP that extends from the lower surface LS. The first side surface SS1 may be bent from the lower surface LS to a predetermined curvature. In the inventive concept, the part used for manufacturing window 110, as described later (see...), Figure 3 In the method, the first side surface SS1 can be to which ink INK is transferred (see...). Figure 7A (part of)

[0168] The inclined portion PP2 is a portion with a predetermined inclination, and the diameter RD-A of the inclined portion PP2 can decrease as the distance from the curved portion PP1 increases. (See later...) Figure 15B Provide a detailed description of it.

[0169] The inclined portion PP2 may include a second side surface SS2 extending from the first side surface SS1 of the side surface SS of the printed pad PRP. Unlike the first side surface SS1, the second side surface SS2 may not have a curvature relative to the height direction of the printed pad PRP. In the inventive concept, in manufacturing window 110 (see...) Figure 3 In the method, the second side surface SS2 can also be transferred with ink INK, just like the first side surface SS1 (see...). Figure 7A (part of)

[0170] The second part P2 can be an extension of the first part P1.

[0171] The second part P2 may include an upper surface US and a third side surface SS3. The third side surface SS3 may be the portion of the side surface SS of the printed pad PRP that extends from the second side surface SS2 to the upper surface US.

[0172] The diameter RD-B of the second part P2 can increase with the increase of the distance from the first part P1. At this time, the third side surface SS3 can be bent to have curvature relative to the height direction of the printed pad PRP (i.e., the third direction DR3).

[0173] According to the implementation method, such as Figure 15A As shown, the third side surface SS3 may have an inflection point IFP. The inflection point IFP may be defined as the point where the inner curvature in the third side surface SS3 is transformed into an outer curvature. The inner curvature may correspond to the curvature of the third side surface SS3 in the upper portion of the second part P2 relative to the inflection point IFP. The outer curvature may correspond to the curvature of the third side surface SS3 in the lower portion of the second part P2 relative to the inflection point IFP. However, Figure 15A The shape of the third side surface SS3 being bent is shown as an example, but is not limited to any particular embodiment.

[0174] The diameter RDU of the upper surface US can be larger than the diameter RD-A of the inclined portion PP2 and the diameter of the curved portion PP1 (not shown). That is, the second portion P2 can include a portion where the diameter PD-B of the second portion P2 is larger than the diameter RD-A of the inclined portion PP2 and the diameter of the curved portion PP1 (not shown). Through the above, during the pressurization of the printed pad PRP, the pressure transmitted to the first portion P1 can be increased, and the amount of expansion of the first portion P1 can be increased. Therefore, it is possible to prevent [the following from happening] in the window WM (see [link]). Figure 13A The side part SP (see) Figure 13A The text appears to contain pre-defined printed patterns such as 112 (see...). Figure 5A The defect is the unprinted portion of the print.

[0175] According to the implementation method, the maximum diameter RDL of the curved portion PP1 can be Figure 13B The diameter RW of the front surface portion FP of the window WM shown is approximately 85% or greater. Preferably, the maximum diameter RDL of the curved portion PP1 can be approximately 90% of the diameter RW of the front surface portion FP of the window WM.

[0176] When the maximum diameter RDL of the curved portion PP1 is less than approximately 85% or greater than the diameter RW of the front surface portion FP of the window WM, the expansion of the first portion P1 in the first direction DR1 and the second direction DR2 may be insufficient. Therefore, the first portion P1 cannot adhere to the side portion SP of the window WM (see...). Figure 13A This may prevent the transfer of ink (INK).

[0177] According to an embodiment, the diameter RDU of the upper surface US can be about 1.5 to about 2 times the maximum diameter RDL of the curved portion PP1. Preferably, the diameter RDU of the upper surface US can be about 1.75 times the maximum diameter RDL of the curved portion PP1.

[0178] When the diameter RDU of the upper surface US is less than approximately 1.5 times the maximum diameter RDL of the curved portion PP1, the second portion P2 becomes thinner. This can cause the printing pad PRP to bend during the pressurization of the printing pad mold PM, or the expansion of the first portion P1 may be insufficient due to insufficient pressure transmitted to it. When the diameter RDU of the upper surface US is greater than approximately 2 times the maximum diameter RDL of the curved portion PP1, the difference between the diameter RD-B of the second portion P2 and the diameter RD-A of the inclined portion PP2 increases, potentially dispersing the pressure transmitted to the first portion P1.

[0179] According to an embodiment, the height H of the printed pad PRP relative to the third-direction DR3 can be approximately 2 to 3 times the maximum diameter RDL of the curved portion PP1. Preferably, the height from the most protruding portion of the lower surface LS to the upper surface US can be approximately 2.5 times the maximum diameter RDL of the curved portion PP1.

[0180] When the height H of the printed pad PRP is less than approximately twice the maximum diameter RDL of the curved portion PP1, the expansion of the printed pad PRP relative to the first direction DR1 is insufficient, which may result in the presence of a pre-defined printed pattern 112 (see [reference]). Figure 5A The unprinted portion of the printed pad PRP. When the height H of the printed pad PRP is greater than approximately three times the maximum diameter RDL of the curved portion PP1, the printed pad PRP bends during the pressurization of the printed pad PRP, which may result in a pre-defined printed pattern 112 (see Figure 5A The unprinted portion of the ink. For example, the ink (see...) Figure 7A It may only be transferred to window WM (see Figure 13B The side part SP (see) Figure 13B The inner surface IS (see) Figure 13B () is a side surface based on the horizontal direction.

[0181] Figure 15B This is an enlarged view of the first side surface SS1 of the curved portion PP1 and the second side surface SS2 of the inclined portion PP2 in the printed PRP pad. The shapes of the first side surface SS1 and the second side surface SS2 will be described in detail below.

[0182] refer to Figure 15B According to the embodiment, the first side surface SS1 of the curved portion PP1 can have a constant curvature.

[0183] Based on reference Figure 14A The window WM described in the implementation method (see Figure 13B In the case of printed pattern 112 (see...), Figure 5A When a window WM with multiple curvatures is formed on the inner surface IS1 of its first side portion SP1, the first side surface SS1 can have the same curvature as the maximum curvature of the inner surface IS1 of the first side portion SP1. That is, the radius of curvature RP of the first side surface SS1 can be the same as the first radius of curvature R1 (see...). Figure 14A )same.

[0184] Based on reference Figure 14B The window WM described in the implementation method (see Figure 13B In the case of printed pattern 112 (see...) Figure 5AWhen a window WM with a constant curvature is formed on the inner surface IS1' of its first side portion SP1', the first side surface SS1 can have the same curvature as the inner surface IS1' of the first side portion SP1'. That is, the radius of curvature RP of the first side surface SS1 can be the same as the radius of curvature R3 (see...). Figure 14B )same.

[0185] When the curvature of the first side surface SS1 of the curved portion PP1 is less than the maximum curvature of the first side portion SP1 of the window WM, the inclined portion PP2 may not be able to adhere to the portion of the first side portion SP1 where the curvature of the first side portion SP1 is greater than the curvature of the first side surface SS1. Furthermore, when the curvature of the first side surface SS1 of the curved portion PP1 is greater than the maximum curvature of the first side portion SP1 of the window WM, the printed pad PRP may not expand sufficiently to adhere to the entire inner surface IS1 of the first side portion SP1. Therefore, when the curvature of the first side surface SS1 is less than or greater than the maximum curvature of the inner surface IS1 of the first side portion SP1, defects such as unprinted portions forming on a portion of the inner surface IS1 of the first side portion SP1 may occur.

[0186] According to the embodiment, the second side surface SS2 of the inclined portion PP2 can extend from the first side surface SS1 at a certain angle.

[0187] According to the embodiment, the angle θ formed by the reference line BL extending in the normal direction of the upper surface US and the second side surface SS2 can be greater than about 4 degrees. That is, the second side surface SS2 can have an inclination of less than about 86 degrees relative to the plane defined by the first direction DR1 and the second direction DR2.

[0188] According to the concept of the present invention, as the diameter RD-A of the inclined portion PP2 (see...) Figure 15A As the pressure decreases on the third-party DR3, during the pressurization of the printed PRP pad, the pressure can be sufficiently transmitted to the first portion P1, and the expansion of the first portion P1 can also be sufficient. Therefore, because the inclined portion PP2 of the printed PRP pad fully adheres to the second side portion SP2 of the window WM (see...), the pressure can be sufficiently transmitted to the first portion P1, and the expansion of the first portion P1 can also be sufficient. Figure 13B The entire inner surface IS2 (see) Figure 13B The ink INK can be transferred to the entire inner surface IS2 of the second side portion SP2. That is, it can prevent the appearance of printed patterns such as 112 (see...) on the inner surface IS2 of the second side portion SP2. Figure 5A The defect is the unprinted portion of the print.

[0189] According to the implementation method, when the maximum diameter RDL of the curved portion PP1 (see...) Figure 15A ) is set as window WM (see Figure 13BThe front surface portion FP (see) Figure 13B The diameter RW (see) Figure 13B When the internal angle θ formed by the reference line BL extending in the normal direction of the upper surface US and the second side surface SS2 is approximately 90%, the internal angle θ can be greater than approximately 4 degrees and less than approximately 10 degrees.

[0190] When the interior angle θ is about 10 degrees or greater, as the diameter RD-A of the inclined portion PP2 adjacent to the second portion P2 decreases, there may be unprinted portions because the printed pad PRP bends during the pressurization of the printed pad PRP.

[0191] According to the implementation method, the minimum height HP of the first part P1 on the third-direction DR3 can be greater than or equal to the window WM (see [link]). Figure 13A The depth D of the first part P1. When the minimum height HP of the first part P1 is less than the depth D of the window WM, there may be an unprinted part of the printed pattern 112 at one end of the inner surface IS2 of the second side part SP2 of the window WM.

[0192] Although the inventive concept has been described with reference to non-limiting embodiments, those skilled in the art will understand that various changes in form and detail may be made therein without departing from the spirit and scope of the inventive concept. Therefore, the scope of the inventive concept is not intended to be limited to the embodiments set forth in the detailed description of the specification.

Claims

1. Printed padding, including: The first part includes a bottom surface extending in a plane defined by a first direction and a second direction intersecting the first direction, a first upper surface facing the bottom surface, and a first side surface connecting the bottom surface and the first upper surface; as well as The second part is disposed on the first part and includes a second upper surface facing the first upper surface and a second side surface connecting the first upper surface and the second upper surface, wherein the second side surface is the surface for printing the printed pattern. Wherein, the width of the second portion in the first direction increases from the first upper surface toward the second upper surface. Wherein, from the lower portion of the second side surface adjacent to the first upper surface to the upper portion of the second side surface adjacent to the second upper surface, the angle of the second side surface relative to a third direction perpendicular to the bottom surface is in the range of 10° to 12°. Wherein, the upper portion of the first side surface that directly contacts the second side surface is curved inward, and the upper portion of the first side surface together with the second side surface forms a concave shape.

2. The printed pad according to claim 1, wherein, Each of the first and second portions comprises rubber or silicone resin.

3. The printed pad according to claim 1, wherein, The first material included in the first part and the second material included in the second part are different from each other.

4. The printed pad according to claim 1, wherein: The hardness of the first part is in the range of 20 sh A to 35 sh A; and The hardness of the second part is in the range of 7sh A to 15sh A.

5. The printed pad according to claim 1, wherein, The width of the first portion in the first direction decreases from the bottom surface toward the first upper surface.

6. The printed gasket according to claim 1, wherein: The planar area of ​​the bottom surface in the plane defined by the first direction and the second direction is greater than the planar area of ​​the first upper surface in the plane defined by the first direction and the second direction; as well as The planar area of ​​the second upper surface in the plane defined by the first direction and the second direction is greater than the planar area of ​​the first upper surface in the plane defined by the first direction and the second direction.

7. The printed pad according to claim 1, wherein, The second upper surface has a curved shape that protrudes in a direction away from the first portion.

8. A method for manufacturing a window, the method comprising: Adhede the ink to the printed pad; as well as The printing pad, coated with the ink, is pressed onto the window base portion of the window to provide a printed pattern on the window base portion. The printed pad includes: The first part includes a bottom surface extending in a plane defined by a first direction and a second direction intersecting the first direction, a first upper surface facing the bottom surface, and a first side surface connecting the bottom surface and the first upper surface; and The second part is disposed on the first part and includes a second upper surface facing the first upper surface and a second side surface connecting the first upper surface and the second upper surface, wherein the second side surface is the surface on which the printing pattern is performed. Wherein, the width of the second portion in the first direction increases from the first upper surface toward the second upper surface. Wherein, from the lower portion of the second side surface adjacent to the first upper surface to the upper portion of the second side surface adjacent to the second upper surface, the angle of the second side surface relative to a third direction perpendicular to the bottom surface is in the range of 10° to 12°. Wherein, the upper portion of the first side surface that directly contacts the second side surface is curved inward, and the upper portion of the first side surface together with the second side surface forms a concave shape.

9. A method for manufacturing a printing pad, the method comprising: A mold is provided, the mold having a first opening and a second opening, the first opening having a first width in a first direction, and the second opening having a second width in the first direction that is smaller than the first width; A first elastic material is provided in the second opening; A second elastic material is provided in the first opening; as well as Dry the first elastic material and the second elastic material. The second width of the second opening increases as the distance from the first opening increases. Wherein, from the upper portion of the second opening adjacent to the first opening to the lower portion of the second opening adjacent to the bottom surface of the mold, the angle of the side surface of the second opening relative to the thickness direction of the mold is in the range of 10° to 12°. In this case, the portion of the first opening that directly contacts the second opening is curved inwards. In this mold, the dried first and second elastic materials form a concave shape through the inwardly curved portion of the first opening and the second opening. The side surface of the printed pad corresponding to the side surface of the second opening is the surface on which the printed pattern is printed.

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