Release film and hole inspection method using the same

Abstract

A release film and a hole inspection method using the same are provided. The release film includes a first release film; and a second release film under the first release film, wherein the second release film includes a first sub-release film under the first release film; and a second sub-release film under the first sub-release film and including a first portion and a second portion surrounding the first portion, wherein the first portion is attached to the first sub-release film and detachable from the first sub-release film.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2020-0103868, filed with the Korean Intellectual Property Office on August 19, 2020, the entire contents of which are incorporated herein by reference. Technical Field

[0003] Some exemplary embodiments of this disclosure relate to a release film and a method for inspecting pores using the release film. Background Technology

[0004] Typically, a display device includes a display module for displaying images and a support for supporting the display module. The display module includes a display panel for displaying images, a window located on the display panel to protect it from external scratches and impacts, and a cover layer located below the display panel to protect it from external impacts. The support has greater rigidity than the display module and supports the display module. The support includes a support plate containing metal.

[0005] Recently, with the development of display devices, display devices including flexible display panels have been developed. In flexible display modules, the support member located below the display module, which folds relative to the folding axis, has a structure that folds together with the display module.

[0006] The information disclosed in this background section is only intended to enhance the understanding of the background art, and therefore the information discussed in this background section does not necessarily constitute prior art. Summary of the Invention

[0007] Some exemplary embodiments of this disclosure include a release film that can protect a support member and facilitate the execution of manufacturing processes for a display device, and a hole inspection method using the release film.

[0008] Some exemplary embodiments of the present invention include a release film comprising: a first release film; and a second release film below the first release film, wherein the second release film comprises: a first sub-release film below the first release film; and a second sub-release film below the first sub-release film, and includes a first portion and a second portion surrounding the first portion, wherein the first portion is attached to the first sub-release film and is separable from the first sub-release film.

[0009] According to some exemplary embodiments of the present invention, a hole inspection method includes: arranging a first sub-release film and a second sub-release film on a support member, wherein the first sub-release film is on the support member, the second sub-release film is on the first sub-release film, and the second sub-release film includes a first portion and a second portion surrounding the first portion; arranging the support member on a display module; separating the first portion overlapping with a first hole defined in the display module and the support member from the first sub-release film; arranging a camera on the portion of the first sub-release film overlapping with the first hole; and inspecting the first hole through the camera. Attached Figure Description

[0010] The accompanying drawings are included to provide a further understanding of embodiments of the inventive concept and are incorporated in and constitute a part of this specification. The drawings illustrate aspects of some exemplary embodiments of the inventive concept and, together with the description, serve to explain the principles of embodiments of the inventive concept. In the figures:

[0011] Figure 1 This is a perspective view of a display device manufactured using a support member protected by a release film, according to some exemplary embodiments of the present invention.

[0012] Figure 2 This illustrates some exemplary embodiments. Figure 1 A diagram showing the folded state of the display device;

[0013] Figure 3 This is an exploded perspective view of a release film and a support member protected by the release film, according to some exemplary embodiments of the present invention.

[0014] Figure 4 This is based on some exemplary implementation methods. Figure 3 An enlarged 3D view of the first plate;

[0015] Figure 5 This is based on some exemplary implementation methods. Figure 4 A magnified view of region AA;

[0016] Figure 6A This is based on some exemplary implementation methods. Figure 3 A plan view of the support member and the first release film on the support member;

[0017] Figure 6B This is only illustrating some exemplary embodiments. Figure 6A A diagram of the first release film;

[0018] Figure 7A This is based on some exemplary implementation methods. Figure 3 A plan view of the support member and the second release film below the support member;

[0019] Figure 7B This is only illustrating some exemplary embodiments. Figure 7A Diagrams of the second and third release films;

[0020] Figure 8 It is according to some exemplary implementations along Figure 6A A sectional view taken from line II′;

[0021] Figure 9 It is according to some exemplary implementations along Figure 6A A sectional view taken from line II-II′;

[0022] Figure 10 It is based on some exemplary implementations along Figure 6A A sectional view taken from line III-III′;

[0023] Figure 11 and Figure 12 This is used to illustrate the attachment of a display module to, according to some exemplary embodiments. Figure 8 The process diagram of the support component;

[0024] Figure 13 This is based on some exemplary implementation methods. Figure 12 A cross-sectional view of the display panel;

[0025] Figure 14 This is based on some exemplary implementation methods. Figure 12 A floor plan of the display panel;

[0026] Figure 15 This illustrates a combination of some exemplary embodiments to Figure 12 A cross-sectional view of the periphery of the first hole of the display module of the support member;

[0027] Figure 16 This illustrates a combination of some exemplary embodiments to Figure 12 A cross-sectional view of the periphery of the second hole of the display module of the support member;

[0028] Figures 17 to 20 It is according to some exemplary implementations along Figure 7A The sectional view taken along line IV-IV′ is used to illustrate the inspection. Figure 15 A diagram of the method for the first hole;

[0029] Figure 21 and Figure 22 It is according to some exemplary implementations along Figure 6A A cross-sectional view taken along line V-V', which is a diagram used to illustrate the process of the transfer support.

[0030] Figure 23 This is a diagram of a second release film, according to some exemplary embodiments, on which no first and second cut-off portions are formed;

[0031] Figure 24 This illustrates some exemplary embodiments. Figure 8 A diagram of the lamination structure of the first release film; and

[0032] Figure 25 This illustrates one of the exemplary embodiments. Figure 12 The image shows the display panel in a bent state. Detailed Implementation

[0033] In this specification, it will be understood that when a component (or region, layer, part) is referred to as being "on" another component, "connected to" or "attached to" another component, it may be located directly on / connected to / attached to a component, or there may be a third component in between.

[0034] Throughout the text, the same reference numerals denote the same elements. Furthermore, in the accompanying drawings, for clarity, the thickness, proportions, and dimensions of the components are exaggerated.

[0035] The term “and / or” includes any and all combinations of one or more of the associated listed items.

[0036] It will be understood that although terms such as “first” and “second” are used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one component from others. For example, a first element referred to as a first element in one embodiment may be referred to as a second element in another embodiment without departing from the scope of the appended claims. Unless otherwise stated, singular terms may include plural forms.

[0037] In addition, terms such as "below," "under," "above," and "upper" are used to describe the relationships between the components shown in the diagram. These terms can be relative concepts and are described based on the directions represented in the diagram.

[0038] 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 this invention pertains. Furthermore, terms such as those defined in commonly used dictionaries shall be interpreted as having a meaning consistent with their meaning in the context of the relevant art and are expressly defined herein, unless interpreted in an idealized or overly formal sense.

[0039] The meaning of "include" or "comprise" specifies a characteristic, fixed number, step, operation, element, component, or combination thereof, but does not exclude other characteristics, fixed numbers, steps, operations, elements, components, or combinations thereof.

[0040] In the following description, embodiments of the inventive concept will be described in more detail with reference to the accompanying drawings.

[0041] Figure 1 This is a perspective view of a display device manufactured using a support member protected by a release film, according to some exemplary embodiments of the present invention. Figure 2 This illustrates some exemplary embodiments. Figure 1 A diagram showing the folded state of the display device.

[0042] Reference Figure 1 The display device DD according to some exemplary embodiments of the present invention has a rectangular shape, which has a long side extending in a first direction DR1 and a short side extending in a second direction DR2 intersecting the first direction DR1. However, the embodiments of the present invention are not limited thereto. For example, the display device DD can have various shapes such as circular shapes, polygonal shapes, etc. The display device DD can be a flexible display device.

[0043] In the following text, the direction that passes substantially perpendicularly through the plane defined by the first direction DR1 and the second direction DR2 (or the normal to the plane defined by the first direction DR1 and the second direction DR2) is defined as the third direction DR3. Furthermore, in this specification, the terms "viewed from a plane" or "in a plan view" may be defined as the state when viewed from the third direction DR3.

[0044] The display device DD may include: a folding region FA, wherein the display device DD is configured to bend or curve without damaging the display device DD; and a plurality of non-folding regions NFA1 and NFA2 outside the folding region FA. The non-folding regions NFA1 and NFA2 may include a first non-folding region NFA1 and a second non-folding region NFA2, although the number of non-folding regions is not necessarily limited thereto. The folding region FA may be located between the first non-folding region NFA1 and the second non-folding region NFA2. The folding region FA, the first non-folding region NFA1, and the second non-folding region NFA2 may be arranged on a second direction DR2.

[0045] For example, although a folded region FA and two non-folded regions NFA1 and NFA2 are shown, embodiments based on the present invention are not limited thereto. For example, the number of folded regions FA and the number of non-folded regions NFA1 and NFA2 are not limited thereto. For example, a display device DD may include a plurality of non-folded regions and a plurality of folded regions between the non-folded regions, wherein the plurality of non-folded regions is more than two non-folded regions.

[0046] The top surface of the display device DD can be defined as a display surface DS, and has a plane defined by a first direction DR1 and a second direction DR2. The image IM generated from the display device DD can be provided to or displayed to the user through the display surface DS.

[0047] The display surface DS may include a display area DA and a non-display area NDA surrounding the display area DA. An image IM may be displayed in the display area DA, but may not be displayed in the non-display area NDA. The non-display area NDA may surround the display area DA and define the edge of the display device DD, the edge of which is printed with color (e.g., a set or predetermined color).

[0048] The display device DD may include multiple sensors SN and at least one camera CAM. The sensor SN and camera CAM may be adjacent to the edge of the display device DD. The sensor SN and camera CAM may be located in a display area DA adjacent to a non-display area NDA. The sensor SN and camera CAM may be located in a first non-folding area NFA1 and a second non-folding area NFA2.

[0049] For example, a sensor SN can be a proximity sensor, but the type of sensor SN is not limited to this. A camera CAM can capture external images.

[0050] Reference Figure 2 The display device DD can be a foldable (foldable) display device DD capable of being folded or unfolded (e.g., along the folding region FA). For example, the folding region FA can be bent relative to a folding axis FX parallel to the first direction DR1, and therefore, the display device DD can be folded. The folding axis FX can be defined as a long axis parallel to the long side of the display device DD.

[0051] When the display device DD is folded, the first non-folding region NFA1 and the second non-folding region NFA2 can face each other, and the display device DD can be folded inward (e.g., so that the first non-folding region NFA1 and the second non-folding region NFA2 face each other) to prevent the display surface DS from being exposed to the outside. However, embodiments of the inventive concept are not limited to this. For example, the display device DD can be folded outward (e.g., so that the first non-folding region NFA1 and the second non-folding region NFA2 are opposite to each other), so that the display surface DS is exposed to the outside relative to the folding axis FX.

[0052] Figure 3 This is an exploded perspective view of a release film and a support member protected by the release film, according to some exemplary embodiments of the present invention.

[0053] Reference Figure 3 Release film RFL can be placed above and below the support member SUP to protect the support member SUP. The support member SUP can be protected by the release film RFL and can be transferred to the process of manufacturing the display device DD.

[0054] The release film RFL includes a first release film RFL1, a second release film RFL2 located below the first release film RFL1, and a third release film RFL3 located below the first release film RFL1. The second release film RFL2 may face the first release film RFL1, and the third release film RFL3 may face the first release film RFL1.

[0055] The first release film RFL1 can be located on the support SUP. The second release film RFL2 and the third release film RFL3 can be located below the support SUP. The support SUP can be located between the first release film RFL1 and the second release film RFL2 and the third release film RFL3. The third release film RFL3 can be arranged adjacent to the second release film RFL2.

[0056] The first release film RFL1 can protect the upper portion of the support member SUP, and the second release film RFL2 and the third release film RFL3 can protect the lower portion of the support member SUP. According to some exemplary embodiments, each of the first release film RFL1, the second release film RFL2 and the third release film RFL3 may include a base film and an adhesive layer formed on one surface of the base film.

[0057] The second release film RFL2 may include a first sub-release film RFL2_1 located below the support member SUP and a second sub-release film RFL2_2 located below the first sub-release film RFL2_1. The first sub-release film RFL2_1 is located below the first release film RFL1 and faces the first release film RFL1.

[0058] The planar structures of the first release film RFL1, the second release film RFL2, and the third release film RFL3 will be referenced below. Figures 6A to 7B To describe in more detail.

[0059] The support component SUP may include a first plate PLT1, a cover layer COV, a second plate PLT2, a buffer layer CUL, an insulating layer INL, and an edge adhesive layer BAD.

[0060] The first plate PLT1 can be located below the first release film RFL1. The opening OP overlapping the folded region FA can be defined within the first plate PLT1. The structure of each of the openings OP will be described below. Figure 4 and Figure 5 As shown in the image.

[0061] The first plate PLT1 may comprise a material having an elastic modulus of about 60 GPa or higher. The first plate PLT1 may comprise a metallic material such as stainless steel (SUS). For example, the first plate PLT1 may comprise SUS 304, but embodiments according to this disclosure are not limited thereto. For example, the first plate PLT1 may comprise various metallic materials.

[0062] The cover layer COV may be located below the first plate PLT1. The cover layer COV may have a lower elastic modulus than the first plate PLT1. For example, the cover layer COV may comprise thermoplastic polyurethane or rubber, but embodiments according to this disclosure are not limited thereto. The cover layer COV may be manufactured in sheet form and attached to the first plate PLT1.

[0063] The second plate PLT2 can be located below the COV cover layer. The second plate PLT2 can include metal. The second plate PLT2 can serve as a heat dissipation layer. The second plate PLT2 can include copper, copper alloys, and graphite. However, this is only an example, and the second plate PLT2 can include various metals (e.g., Invar alloy or stainless steel).

[0064] The cushioning layer CUL can be located below the second plate PLT2. The cushioning layer CUL can absorb external impacts. The cushioning layer CUL may include a foam sheet with elastic force (e.g., a set or predetermined elastic force). The cushioning layer CUL may include foam, sponge, polyurethane, or thermoplastic polyurethane.

[0065] The insulating layer INL may be located below the buffer layer CUL. The insulating layer INL may include insulating tape. The insulating layer INL can prevent or reduce the introduction of static electricity.

[0066] The edge adhesive layer BAD can be arranged along the edge of the first plate PLT1. The edge adhesive layer BAD can be located below the two opposite sides of the first plate PLT1 in the first direction DR1.

[0067] The edge adhesive layer BAD may not be located below one of the opposite sides of the first plate PLT1 in the second direction DR2. The edge adhesive layer BAD may be located below the other side of the opposite sides of the first plate PLT1 in the second direction DR2.

[0068] When viewed in a plane (or in a plan view), the second plate PLT2, the buffer layer CUL, the insulating layer INL, and the edge adhesive layer BAD can be separated from each other in the area that overlaps with the folded area FA.

[0069] The side portions OS1, OS2, OS3, and OS4 of the cover layer COV, the second plate PLT2, the buffer layer CUL, and the insulating layer INL located adjacent to the first plate PLT1 can be patterned (e.g., in a set or predetermined shape).

[0070] One side OS5 of the first sub-release film RFL2_1 and one side OS6 of the second sub-release film RFL2_2 can have shapes corresponding to the sides OS1, OS2, OS3 and OS4 of the cover layer COV, the second plate PLT2, the buffer layer CUL and the insulating layer INL.

[0071] The side OS7 of the third release film RFL3 facing the first sub-release film RFL2_1 and the second sub-release film RFL2_2, which are side portions OS5 and OS6, may have a shape opposite to that of each of the side portions OS5 and OS6 of the first and second sub-release films RFL2_1 and RFL2_2. For example, when each of the side portions OS5 and OS6 of the first and second sub-release films RFL2_1 and RFL2_2 is defined as a gravure, the side OS7 of the third release film RFL3 may be defined as a relief plate corresponding to the gravure.

[0072] Multiple cut-off portions INC1 and INC2 may be defined within the second release membrane RFL2. Cut-off portions INC1 and INC2 may also be defined within the first sub-release membrane RFL2_1 and the second sub-release membrane RFL2_2. Detailed configurations of each of the cut-off portions INC1 and INC2 will be referenced below. Figures 6A to 7B To describe in more detail.

[0073] For example, Figure 3 The configurations shown are illustrated as having similar thicknesses, but can have substantially different thicknesses. Structures with the aforementioned thicknesses will be discussed below. Figure 8 As shown in the image.

[0074] Figure 4 yes Figure 3 An enlarged 3D view of the first PLT1 board. Figure 5 yes Figure 4 A magnified view of region AA.

[0075] Reference Figure 4 and Figure 5 The first plate PLT1 may include a first plate PLT1_1, a first plate PLT1_2, and a folding plate PLT_F. The folding plate PLT_F may be located between the first plate PLT1_1 and the first plate PLT1_2.

[0076] Multiple openings (OPs) can be confined within a folded plate (PLT_F). The openings (OPs) can be arranged (e.g., in a set or predetermined arrangement). The openings (OPs) can be arranged in a grid shape.

[0077] Because the opening OP is confined within the folding plate PLT_F, the area of ​​the folding plate PLT_F can be reduced, thereby reducing its rigidity. Therefore, the flexibility of the folding plate PLT_F can be greater compared to a case where the opening OP is not confined within it. Consequently, the folding plate PLT_F can be folded relatively easily.

[0078] A first hole H1 and a plurality of second holes H2 may be defined within a first plate PLT1. The first hole H1 and the second holes H2 may be adjacent to the edge of the first plate PLT1. For example, a first hole H1 and one second hole H2 may be defined within a first-second plate PLT1_2, and another second hole H2 may be defined within a first-first plate PLT1_1. However, the positions of the first hole H1 and the second holes H2 are not limited thereto.

[0079] The camera (CAM) can be located in the first hole H1 as a functional element. The aforementioned sensor (SN) can be located in the second hole H2.

[0080] Figure 6A yes Figure 3 A plan view of the support member and the first release film located on the support member. Figure 6B Is only shown Figure 6A The first release film diagram. Figure 7A yes Figure 3 A plan view of the support member and the second release film located below the support member. Figure 7B Is only shown Figure 7A The diagram shows the second and third release films.

[0081] For example, limited to Figure 6A The opening in the first plate PLT1 is shown in gray, and the shape of the first plate PLT1 below the first release film RFL1 is shown together with the first release film RFL1. Furthermore, in Figure 7A In the diagram, the shapes of the insulating layer INL and the edge adhesive layer BAD below the second release film RFL2 and the third release film RFL3 are shown together with the second release film RFL2 and the third release film RFL3.

[0082] Reference Figure 6A and Figure 6B The first release film RFL1 may cover the upper portion of the support member SUP. The first release film RFL1 may cover the first plate PLT1. When viewed in a plane (or in a plan view), the first release film RFL1 may include a plurality of first shanks HD1 protruding outward from the support member SUP.

[0083] According to some exemplary embodiments, the first release film RFL1 can be removed using the first handle HD1. For example, in a layered structure, the first handle HD1 is grasped to cause the first release film RFL1 to layer.

[0084] Reference Figure 7A and Figure 7B The second release film RFL2 and the third release film RFL3 can cover the lower portion of the support member SUP. The second release film RFL2 and the third release film RFL3 can cover the insulating layer INL and the edge adhesive layer BAD.

[0085] The third release film RFL3 may be adjacent to the second release film RFL2 in the second direction DR2. One side OS7 of the third release film RFL3 may be adjacent to the sides OS5 and OS6 of the second release film RFL2.

[0086] The second sub-release membrane RFL2_2 may include a first portion PT1 overlapping with the first aperture H1 and a second portion PT2 surrounding the first portion PT1. A separator line SPL may define the space between the first portion PT1 and the second portion PT2. The first portion PT1 may be separated from the separator line SPL. The first portion PT1 may be separated from the second portion PT2 and is attached to and separable from the first sub-release membrane RFL2_1. The above configuration will be described in more detail below.

[0087] When viewed in a plane (or in a plan view), the sum of the areas of the second release film RFL2 and the third release film RFL3 may be greater than the sum of the areas of the support member SUP. When viewed in a plane (or in a plan view), the second release film RFL2 may include a plurality of protrusions PRT1 and PRT2 projecting outward from the support member SUP.

[0088] The protrusions PRT1 and PRT2 can be defined as a second shank HD2. According to some exemplary embodiments, the second release film RFL2 can be removed using the second shank HD2. The first portion PT1 can be removed using the second shank HD2 adjacent to the first hole H1.

[0089] The protrusions PRT1 and PRT2 may include a plurality of first protrusions PRT1 and a plurality of second protrusions PRT2, wherein the plurality of first protrusions PRT1 protrude from one of the two sides of the support member SUP that are opposite to each other in the first direction DR1, and the plurality of second protrusions PRT2 protrude to the outside from the other side of the two sides of the support member SUP.

[0090] The first cut-off portion INC1 may be defined within the first protrusion PRT1. The first cut-off portion INC1 may extend in the second direction DR2. The first cut-off portion INC1 may be defined between the two opposite sides of the first protrusion PRT1 in the second direction DR2.

[0091] The second cut-off portion INC2 may be defined within the second protrusion PRT2. The second cut-off portion INC2 may extend in the second direction DR2. The second cut-off portion INC2 may be defined between the two opposite sides of the second protrusion PRT2 in the second direction DR2.

[0092] The third release film RFL3 may include a third shank HD3 protruding beyond the support SUP. According to some exemplary embodiments, the third release film RFL3 can be removed using the third shank HD3.

[0093] Although the first cut-off portion INC1 and the second cut-off portion INC2 are defined within the first protrusion PRT1 and the second protrusion PRT2, the embodiments of the present invention are not limited thereto. For example, the first cut-off portion INC1 may be defined within the first protrusion PRT1, and the second cut-off portion INC2 may not be defined within the second protrusion PRT2. Furthermore, the first cut-off portion INC1 may not be defined within the first protrusion PRT1, and the second cut-off portion INC2 may be defined within the second protrusion PRT2.

[0094] Figure 8 It is along Figure 6A A sectional view taken from line I-I'.

[0095] Reference Figure 8 The first release film RFL1 can be located on the first plate PLT1 to protect the first plate PLT1.

[0096] When viewed in a plane (or in a plan view), the first plate PLT1_1 can overlap with the first non-folded region NFA1. When viewed in a plane (or in a plan view), the first plate PLT1_2 can overlap with the second non-folded region NFA2. When viewed in a plane (or in a plan view), the folded plate PLT_F can overlap with the folded region FA.

[0097] The cover layer COV located below the first plate PLT1 can cover the opening OP defined in the first plate PLT1. A first adhesive layer AL1 can be located between the cover layer COV and the first plate PLT1, and the cover layer COV and the first plate PLT1 can be bonded to each other through the first adhesive layer AL1. The cover layer COV can prevent or reduce the introduction of foreign substances into the opening OP defined in the first plate PLT1.

[0098] The second plate PLT2 can be located below the cover layer COV, and the second adhesive layer AL2 can be located between the cover layer COV and the second plate PLT2. The cover layer COV and the second plate PLT2 can be bonded to each other through the second adhesive layer AL2. When viewed in a plane (or in a plan view), the second adhesive layer AL2 may not overlap with the folded area FA.

[0099] The second adhesive layer AL2 may include a first portion AL2_1 and a second portion AL2_2 spaced apart from each other. When viewed in a plane (or in a plan view), the first portion AL2_1 may overlap with the first non-folded region NFA1, and the second portion AL2_2 may overlap with the second non-folded region NFA2. The first portion AL2_1 and the second portion AL2_2 may not overlap with the folded region FA. The second adhesive layer AL2 may not be disposed in the area corresponding to the folded region FA to improve the flexibility of the cover layer COV.

[0100] When viewed in a plane (or in a plan view), the second plate PLT2 may include a second_1 plate PLT2_1 that overlaps with the first non-folded region NFA1 and a second_2 plate PLT2_2 that overlaps with the second non-folded region NFA2.

[0101] The gap GP between the second plate PLT2_1 and the second plate PLT2_2 can be smaller than the gap between the first part AL2_1 and the second part AL2_2 in the second direction DR2. That is, the gap GP can be smaller than the length of the folded region FA.

[0102] When viewed in a plane (or in a plan view), the gap GP between the second_1 plate PLT2_1 and the second_2 plate PLT2_2 can overlap with the folded area FA. For example, the gap GP between the second_1 plate PLT2_1 and the second_2 plate PLT2_2 can be from about 0.3 mm to about 3 mm.

[0103] The buffer layer CUL can be located below the second board PLT2, and the third adhesive layer AL3 can be located between the second board PLT2 and the buffer layer CUL. The second board PLT2 and the buffer layer CUL can be bonded to each other through the third adhesive layer AL3.

[0104] The insulating layer INL, provided as an insulating tape, can be attached below the buffer layer CUL. Each of the buffer layer CUL, the third adhesive layer AL3, and the insulating layer INL may include two parts separated from each other, with a gap GP between the two parts.

[0105] The third release film RFL3 can be located below the first plate PLT1. The third release film RFL3 can be adjacent to one side of the first plate PLT1. The third release film RFL3 can be adjacent to the first edge BA1 of the cover layer COV, the second plate PLT2, the buffer layer CUL, and the insulating layer INL. The first edge BA1 of the cover layer COV, the second plate PLT2, the buffer layer CUL, and the insulating layer INL can be adjacent to... Figure 3 The side OS1, OS2, OS3 and OS4 correspond to each other.

[0106] The stepped compensation layer CP can be located below the first plate PLT1, and the fourth adhesive layer AL4 can be located between the stepped compensation layer CP and the first plate PLT1. The stepped compensation layer CP and the first plate PLT1 can be bonded to each other through the fourth adhesive layer AL4.

[0107] The edge adhesive layer BAD may be located below the step compensation layer CP. Each of the first adhesive layer AL1, the second adhesive layer AL2, the third adhesive layer AL3, and the fourth adhesive layer AL4, as well as the edge adhesive layer BAD, may include a pressure-sensitive adhesive (PSA) or an optically clear adhesive (OCA), but the type of adhesive is not limited to these.

[0108] The fourth adhesive layer AL4, the stepped compensation layer CP, and the edge adhesive layer BAD may be adjacent to the other side of the first plate PLT1. The stepped compensation layer CP and the edge adhesive layer BAD may be adjacent to the cover layer COV, the second plate PLT2, the buffer layer CUL, and the second edge BA2 of the insulating layer INL.

[0109] The cover layer COV, the second plate PLT2, the buffer layer CUL, and the insulating layer INL can be located between the third release film RFL3 and the stepped compensation layer CP, and between the third release film RFL3 and the edge adhesive layer BAD.

[0110] The second release film RFL2 can be located below the insulating layer INL and the edge adhesive layer BAD. The first sub-release film RFL2_1 can be located below the insulating layer INL and the edge adhesive layer BAD. The second sub-release film RFL2_2 can be located below the first sub-release film RFL2_1.

[0111] According to some exemplary embodiments, a silicone adhesive may be located between the first sub-release film RFL2_1 and the second sub-release film RFL2_2. In this case, the second sub-release film RFL2_2 can be easily separated from the first sub-release film RFL2_1.

[0112] The third release membrane RFL3 can be adjacent to the second release membrane RFL2. When viewed in a plane (or in a plan view), the third release membrane RFL3 may not overlap with the second release membrane RFL2.

[0113] The thickness of the first plate PLT1 can be greater than the thickness of each of the second plate PLT2 and the buffer layer CUL. The thickness of each of the cover layer COV and the insulating layer INL can be less than the thickness of each of the second plate PLT2 and the buffer layer CUL. The thickness can be defined as the value measured on the third-direction DR3.

[0114] The thickness of the first release film RFL1 can be less than the thickness of the first plate PLT1. The thickness of the second release film RFL2 can be greater than the thickness of the first plate PLT1. For example, the thickness of the first release film RFL1 can be approximately 82 micrometers (μm). The thickness of the second release film RFL2 can be approximately 508 micrometers (μm). The thickness of the third release film RFL3 can be greater than the thickness of the first plate PLT1.

[0115] Figure 9 It is along Figure 6A The sectional view taken from line II-II'.

[0116] Reference Figure 9 The first hole H1 is defined in the support member SUP, and the first release film RFL1 can be disposed above the support member SUP to cover the first hole H1. The second release film RFL2 can be disposed below the support member SUP to cover the first hole H1.

[0117] The first hole H1 can be defined in the edge adhesive layer BAD, the stepped compensation layer CP, the fourth adhesive layer AL4, and the first plate PLT1. In the first direction DR1 and the second direction DR2, the width of the first hole H1 defined in the edge adhesive layer BAD, the stepped compensation layer CP, and the fourth adhesive layer AL4 can be greater than the width of the first hole H1 defined in the first plate PLT1.

[0118] Figure 10 It is along Figure 6A The sectional view taken from line III-III'.

[0119] Reference Figure 10The second hole H2 is defined within the support member SUP, and the first release film RFL1 can be located above the support member SUP to cover the second hole H2. The second release film RFL2 can be located below the support member SUP to cover the second hole H2.

[0120] The second hole H2 can be defined within the edge adhesive layer BAD, the stepped compensation layer CP, the fourth adhesive layer AL4, and the first plate PLT1. In the first direction DR1 and the second direction DR2, the width of the second hole H2 defined within the edge adhesive layer BAD, the stepped compensation layer CP, and the fourth adhesive layer AL4 can be greater than the width of the second hole H2 defined within the first plate PLT1.

[0121] Figure 11 and Figure 12 This is used to explain how the display module is attached to Figure 8 The process diagram of the support component.

[0122] Reference Figure 11 The first release film RFL1 located on the support SUP can be removed.

[0123] Reference Figure 12 The display module DM can be attached to the support SUP. The display module DM can be attached to the top surface of the first plate PLT1. The first plate PLT1 supports the display module DM. The heat dissipation performance of the display module DM can be improved by using the first plate PLT1 and the second plate PLT2.

[0124] The second plate PLT2_1 can support the first non-folded region NFA1. The second plate PLT2_2 can support the second non-folded region NFA2. The second plate PLT2_1 and the second plate PLT2_2 can extend into the folded region FA and are positioned adjacent to each other in the folded region FA.

[0125] The second plate PLT2_1 and the second plate PLT2_2 can support the folding plate PLT_F, in which an opening OP is defined in the folding region FA. When pressure is applied to the folding plate PLT_F from the top, deformation of the portion of the folding plate PLT_F can be prevented by the second plate PLT2_1 and the second plate PLT2_2.

[0126] The display module DM includes a display panel DP, an anti-reflective layer RPL, a window WIN, a window protective layer WP, a panel protective layer PPL, a barrier layer BRL, and fifth adhesive layers AL5 to tenth adhesive layers AL10. The anti-reflective layer RPL, the window WIN, and the window protective layer WP can be located on the display panel DP. The panel protective layer PPL can be located below the display panel DP.

[0127] The display panel DP may include multiple pixels for displaying images. The display panel DP may be a flexible display panel. For example, the display panel DP may include multiple electronic components located on a flexible substrate.

[0128] According to some exemplary embodiments of the present invention, the display panel DP can be a light-emitting display panel. For example, the display panel DP can be an organic light-emitting display panel or a quantum dot light-emitting display panel. The emitting layer of an organic light-emitting display panel may include organic light-emitting materials. The emitting layer of a quantum dot light-emitting display panel may include quantum dots, quantum rods, etc. Hereinafter, the display panel DP is described as an organic light-emitting display panel.

[0129] The display panel DP may include a first region AA1, a second region AA2, and a curved region BA between the first region AA1 and the second region AA2. The data driver DDV may be located in the second region AA2.

[0130] An anti-reflective layer (RPL) can be located on the display panel (DP). The RPL can be defined as an external light anti-reflective film. The RPL reduces the reflectivity of external light incident on the display panel (DP).

[0131] When external light traveling toward the display panel (DP) is reflected from the DP and then delivered to an external user, the user can visually perceive the external light, as if it were a mirror. To prevent this phenomenon, for example, the anti-reflective layer (RPL) can include multiple color filters that display the same color as the pixels.

[0132] A color filter can filter external light to display the same color as the pixel. In this case, the external light may not be visually perceived by the user. However, embodiments of the present invention are not limited to this, and the anti-reflective layer RPL may include a phase retarder and / or a polarizer to reduce the reflectivity of external light.

[0133] The window (WIN) can be placed on the anti-reflective layer (RPL). The window protects the display panel (DP) and the anti-reflective layer (RPL) from external scratches. The window can also be optically transparent.

[0134] Window WIN may include glass. Window WIN may be defined as ultra-thin glass (UTG). However, embodiments of the inventive concept are not limited thereto, and window WIN may include a synthetic resin film.

[0135] A window WIN can have a single-layer or multi-layer structure. For example, a window WIN can include multiple plastic films bonded together by using an adhesive, or it can include a glass substrate and plastic films bonded together by using an adhesive.

[0136] A window protective layer WP can be disposed on a window WIN. The window protective layer WP may comprise a flexible plastic material, such as polyimide or polyethylene terephthalate. According to some exemplary embodiments, at least one of a hard coating, an anti-fingerprint layer, and an anti-reflective layer may be disposed on the top surface of the window protective layer WP.

[0137] The printed layer PIT can be located on the bottom surface of the window protector WP. The printed layer PIT can be black, but its color is not limited to black. The printed layer PIT can be adjacent to the edge of the window protector WP.

[0138] The fifth adhesive layer AL5 can be located between the window protective layer WP and the window WIN. The window protective layer WP and the window WIN can be bonded together through the fifth adhesive layer AL5. The fifth adhesive layer AL5 can cover the printed layer PIT.

[0139] The sixth adhesive layer AL6 can be located between the window WIN and the anti-reflective layer RPL. The window WIN and the anti-reflective layer RPL can be bonded to each other through the sixth adhesive layer AL6.

[0140] The seventh adhesive layer AL7 can be located between the anti-reflective layer RPL and the display panel DP. The anti-reflective layer RPL and the display panel DP can be bonded to each other through the seventh adhesive layer AL7.

[0141] The panel protective layer (PPL) can be located below the display panel (DP). The PPL protects the lower portion of the display panel (DP). The PPL can comprise a flexible plastic material. For example, the PPL can comprise polyethylene terephthalate (PET).

[0142] The panel protective layer PPL may include a first portion PPL_1 located below the first region AA1 and a second portion PPL_2 located below the second region AA2. The panel protective layer PPL may not be located below the bending region BA.

[0143] A barrier layer (BRL) can be located beneath the panel protective layer (PPL). The BRL increases resistance to compressive forces caused by external pressure. Therefore, the BRL can be used to prevent deformation of the display panel (DP). The BRL can comprise a flexible plastic material, such as polyimide or polyethylene terephthalate.

[0144] The light-absorbing layer (BRL) can have a color that absorbs light. The BRL can also be black. In this case, when the display module DM is viewed from above, the components located below the BRL are not visually identifiable.

[0145] The eighth adhesive layer AL8 may be located between the display panel DP and the panel protective layer PPL. The display panel DP and the panel protective layer PPL can be bonded to each other through the eighth adhesive layer AL8. The eighth adhesive layer AL8 may include a first portion AL8_1 disposed under the first region AA1 and a second portion AL8_2 disposed under the second region AA2. The eighth adhesive layer AL8 may not be located under the curved region BA.

[0146] The ninth adhesive layer AL9 can be located between the first portion PPL_1 of the panel protective layer PPL and the barrier layer BRL. The first portion PPL_1 of the panel protective layer PPL and the barrier layer BRL can be bonded to each other through the ninth adhesive layer AL9.

[0147] The tenth adhesive layer AL10 can be located between the barrier layer BRL and the first plate PLT1. The barrier layer BRL and the first plate PLT1 can be attached to each other through the tenth adhesive layer AL10.

[0148] When viewed in a plane (or in a plan view), the tenth adhesive layer AL10 includes a first portion AL10_1 that overlaps with the first non-folded region NFA1 and a second portion AL10_2 that overlaps with the second non-folded region NFA2. The tenth adhesive layer AL10 may not overlap with the folded region FA. Because the tenth adhesive layer AL10 is not located at the portion overlapping with the folded region FA, the flexibility of the first plate PLT1 can be improved.

[0149] Each of the fifth adhesive layer AL5 to the tenth adhesive layer AL10 may include a transparent adhesive, such as pressure-sensitive adhesive (PSA) or optically transparent adhesive (OCA).

[0150] According to some exemplary embodiments, the second release film RFL2 and the third release film RFL3 can be removed later, and the edge adhesive layer BAD can be attached to the set structure that houses the display module DM and the support SUP.

[0151] Figure 13 This is based on some exemplary implementation methods. Figure 12 A cross-sectional view of the display panel.

[0152] Reference Figure 13 The display panel DP may include a substrate SUB, a circuit element layer DP-CL on the substrate SUB, a display element layer DP-OLED on the circuit element layer DP-CL, a thin film encapsulation layer TFE on the display element layer DP-OLED, and an input sensing unit ISP on the thin film encapsulation layer TFE. The display element layer DP-OLED may be located at the display area DA.

[0153] The substrate SUB may include a display area DA and a non-display area NDA surrounding the display area DA. The substrate SUB may include a flexible plastic material. For example, the substrate SUB may include polyimide (PI).

[0154] The circuit element layer DP-CL may include an insulating layer, semiconductor patterns, conductive patterns, and signal lines. The insulating layer, semiconductor layer, and conductive layer may be located on the substrate SUB by means such as coating, deposition, etc. Subsequently, the insulating layer, semiconductor layer, and conductive layer may be selectively patterned through multiple photolithography processes to form semiconductor patterns, conductive patterns, and signal lines.

[0155] The circuit element layer DP-CL may include transistors composed of semiconductor patterns, conductive patterns, and signal lines. The display element layer DP-OLED may include light-emitting elements connected to the transistors. Pixels may include transistors and light-emitting elements.

[0156] A thin-film encapsulation layer (TFE) can be located on the circuit element layer (DP-CL) to cover the display element layer (DP-OLED). The TFE can include inorganic layers, organic layers, and inorganic layers laminated sequentially. Each of the inorganic layers can include inorganic materials and protect the pixels from moisture / oxygen. The organic layers can include organic materials and protect the pixels from foreign materials such as dust particles.

[0157] The input sensing unit (ISP) may include multiple sensors for sensing external inputs. These sensors may sense external inputs capacitively. External inputs may include various types of inputs, such as parts of the user's body, light, heat, a pen, or pressure.

[0158] When manufacturing the display panel (DP), the input sensing unit (ISP) can be directly fabricated on the thin-film encapsulation layer (TFE). However, embodiments of the present invention are not limited to this, and the input sensing unit (ISP) can be configured as a panel separated from the display panel (DP), and can be attached to the display panel (DP) via an adhesive layer.

[0159] Figure 14 yes Figure 12 A floor plan of the display panel.

[0160] Reference Figure 14 The scan driver SDV, data driver DDV, and transmit driver EDV can be arranged on the display panel DP. The display panel DP can include a first region AA1, a second region AA2, and a curved region BA between the first region AA1 and the second region AA2. The curved region BA extends in a first direction DR1, and the first region AA1, the curved region BA, and the second region AA2 can be arranged in a second direction DR2.

[0161] The first region AA1 may include a display region DA and a non-display region NDA surrounding the display region DA. The non-display region NDA may surround the display region DA. An image may be displayed in the display region DA, but may not be displayed in the non-display region NDA. The second region AA2 and the curved region BA may be regions where no image is displayed.

[0162] When viewed in the first direction DR1, the first region AA1 may include a first non-folded region NFA1, a second non-folded region NFA2, and a folded region FA located between the first non-folded region NFA1 and the second non-folded region NFA2.

[0163] The display panel (DP) includes multiple pixels (PX), multiple scan lines SL1 to SLm, multiple data lines DL1 to DLn, multiple emission lines EL1 to ELm, a first control line CSL1 and a second control line CSL2, a power line PL, a connection line CNL, and multiple pads (PD). Here, m and n are natural numbers. Pixels (PX) can be located in the display area (DA) and connected to scan lines SL1 to SLm, data lines DL1 to DLn, and emission lines EL1 to ELm.

[0164] The scan driver SDV and transmit driver EDV may be located in the non-display area NDA. The scan driver SDV and transmit driver EDV may be located in the non-display areas NDA adjacent to each other on opposite sides of the first area AA1 in the first direction DR1. The data driver DDV may be located in the second area AA2. The data driver DDV may be manufactured as an integrated circuit chip and installed in the second area AA2.

[0165] Scan lines SL1 to SLm can extend along the first direction DR1 and connect to the scan driver SDV. Data lines DL1 to DLn can extend along the second direction DR2 and connect to the data driver DDV via the bend region BA. Transmit lines EL1 to ELm can extend along the first direction DR1 and connect to the transmit driver EDV.

[0166] The power line PL may extend along the second direction DR2 and may be located within the non-display area NDA. The power line PL may be located between the display area DA and the transmit driver EDV, but embodiments according to this disclosure are not limited thereto. For example, the power line PL may be located between the display area DA and the scan driver SDV.

[0167] The power supply line PL can extend through the bend region BA to the second region AA2. When viewed in a plane (or in a plan view), the power supply line PL can extend towards the lower end of the second region AA2. The power supply line PL can receive the drive voltage.

[0168] The connecting line CNL can extend along the first direction DR1 and can be arranged along the second direction DR2. The connecting line CNL can be connected to the power line PL and the pixel PX. The driving voltage can be applied to the pixel PX through the power line PL and the connecting line CNL connected to each other.

[0169] The first control line CSL1 can be connected to the scan driver SDV and extends through the curved region BA toward the lower end of the second region AA2. The second control line CSL2 can be connected to the transmit driver EDV and extends through the curved region BA toward the lower end of the second region AA2. The data driver DDV can be located between the first control line CSL1 and the second control line CSL2.

[0170] When viewed in a plane (or in a plan view), pad PD can be arranged adjacent to the lower end of the second area AA2. Data driver DDV, power line PL, first control line CSL1, and second control line CSL2 can be connected to pad PD.

[0171] Data lines DL1 to DLn can be connected to the corresponding pads PD via the data driver DDV. For example, data lines DL1 to DLn can be connected to the data driver DDV, and the data driver DDV can be connected to the pads PD corresponding to the data lines DL1 to DLn respectively.

[0172] According to some exemplary embodiments, a printed circuit board (PCB) can be configured to connect to the pad PD. A timing controller and a voltage generator can be located on the PCB. The timing controller can be fabricated as an integrated circuit chip and mounted on the PCB. The timing controller and voltage generator can be connected to the pad PD via the PCB.

[0173] The timing controller can control the operation of the scan driver (SDV), data driver (DDV), and transmit driver (EDV). The timing controller can generate scan control signals, data control signals, and transmit control signals in response to control signals received from an external source. A voltage generator can generate drive voltages.

[0174] The scan control signal can be provided to the scan driver SDV via the first control line CSL1. The transmit control signal can be provided to the transmit driver EDV via the second control line CSL2. The data control signal can be provided to the data driver DDV. The timing controller can receive image signals from the outside, convert the image signal data format to match the interface specification of the data driver DDV, and then provide the converted data format to the data driver DDV.

[0175] The scan driver SDV can generate multiple scan signals in response to scan control signals. These scan signals can be applied to pixel PX via scan lines SL1 to SLm. The scan signals can be applied to pixel PX sequentially.

[0176] The data driver DDV can generate multiple data voltages corresponding to the image signal in response to the data control signal. These data voltages can be supplied to the pixel PX via data lines DL1 to DLn. The transmit driver EDV can generate multiple transmit signals in response to the transmit control signal. These transmit signals can be applied to the pixel PX via transmit lines EL1 to ELm.

[0177] A pixel PX can receive data voltage in response to a scan signal. A pixel PX can also emit light with a brightness corresponding to the data voltage in response to a transmit signal to display an image. The emission time of a pixel PX can be controlled by the transmit signal.

[0178] Figure 15 It shows the combination to Figure 12 A cross-sectional view of the periphery of the first hole of the display module of the support member. Figure 16 It shows the combination to Figure 12 A cross-sectional view of the periphery of the second hole of the display module of the support member.

[0179] For example, Figure 15 Is with Figure 9 Corresponding sectional views, and Figure 16 Is with Figure 10 The corresponding sectional view.

[0180] Reference Figure 15 The first hole H1', ​​corresponding to the first hole H1 defined in the support member SUP, can be defined in the display module DM. The first hole H1' can be defined below the window WIN. The first hole H1' can be defined in the anti-reflective layer RPL, the display panel DP, the panel protective layer PPL, the barrier layer BRL, and the sixth adhesive layer AL6 to the tenth adhesive layer AL10.

[0181] In the first direction DR1 and the second direction DR2, the width of the first hole H1' defined in the barrier layer BRL and the ninth adhesive layer AL9 and the tenth adhesive layer AL10 can be greater than the width of the first hole H1' defined in the anti-reflective layer RPL, the display panel DP, the panel protective layer PPL and the sixth adhesive layer AL6 to the eighth adhesive layer AL8.

[0182] On the first direction DR1 and the second direction DR2, the width of the first hole H1' defined in the anti-reflective layer RPL, the display panel DP, the panel protective layer PPL and the sixth adhesive layer AL6 to the eighth adhesive layer AL8 can be smaller than the width of the first hole H1 defined in the first plate PLT1.

[0183] In the first direction DR1 and the second direction DR2, the width of the first hole H1' defined in the barrier layer BRL and the ninth adhesive layer AL9 and the tenth adhesive layer AL10 can be greater than the width of the first hole H1 defined in the first plate PLT1. In the first direction DR1 and the second direction DR2, the width of the first hole H1' defined in the barrier layer BRL and the ninth adhesive layer AL9 and the tenth adhesive layer AL10 can be smaller than the width of the first hole H1 defined in the edge adhesive layer BAD, the stepped compensation layer CP and the fourth adhesive layer AL4.

[0184] When viewed in a plane (or in a plan view), the first aperture H1' may overlap with the first aperture H1. According to some exemplary embodiments, the camera CAM may be located between the first aperture H1' and the first aperture H1 in a subsequent process.

[0185] Reference Figure 16 The second hole H2', corresponding to the second hole H2 defined in the support member SUP, can be defined in the display module DM. The second hole H2' can be defined below the panel protective layer PPL. The second hole H2' can be defined in the barrier layer BRL and the ninth adhesive layer AL9 and the tenth adhesive layer AL10.

[0186] In the first direction DR1 and the second direction DR2, the width of the second hole H2' defined in the barrier layer BRL and the ninth adhesive layer AL9 and the tenth adhesive layer AL10 can be greater than the width of the second hole H2 defined in the first plate PLT1. In the first direction DR1 and the second direction DR2, the width of the second hole H2' defined in the barrier layer BRL and the ninth adhesive layer AL9 and the tenth adhesive layer AL10 can be smaller than the width of the second hole H2 defined in the edge adhesive layer BAD, the step compensation layer CP and the fourth adhesive layer AL4.

[0187] When viewed in a plane (or in a plan view), the second aperture H2' may overlap with the second aperture H2. According to some exemplary embodiments, the sensor SN may be located within the second aperture H2' and the second aperture H2 in a subsequent process.

[0188] Figures 17 to 20 It is along Figure 7A The sectional view taken along line IV-IV' is used to illustrate the inspection. Figure 15 A diagram of the method for the first hole.

[0189] For example, in Figures 17 to 20 In the image, the display module DM and the support SUP, located below the second release film RFL2, are shown together. Furthermore, for ease of description, in... Figures 17 to 20In the diagram, the display module DM and the support SUP are shown as a single layer, and the first holes H1 and H1' are shown in the display module DM and the support SUP, which are shown as a single layer.

[0190] Reference Figure 17 The support member SUP can be located on the display module DM, and the first sub-release film RFL2_1 can be located on the support member SUP. The second sub-release film RFL2_2 can be located on the first sub-release film RFL2_1. The second handle HD2 of the second sub-release film RFL2_2 can protrude outside the support member SUP. The second handle HD2 can protrude outside the first sub-release film RFL2_1. Therefore, the second handle HD2 can be easily grasped.

[0191] The first part PT1 may overlap with the first hole H1 and the first hole H1'. The first part PT1 may be located on the first hole H1. The second shank HD2 may extend from the first part PT1.

[0192] Reference Figure 18 The first portion PT1 can be delaminated from the first sub-release membrane RFL2_1 using the second stem HD2. The second stem HD2 is lifted upwards, and the first portion PT1 can be separated from the separator line SPL. Therefore, the first portion PT1 can be separated from the second portion PT2 and separated from the first sub-release membrane RFL2_1.

[0193] Reference Figure 19 The first part PT1 can be temporarily removed, and the camera H_CAM for inspecting the holes can be located on the support SUP. The camera H_CAM can be located at the first holes H1 and H1'. The camera H_CAM can be located on the portion of the first sub-release film RFL2_1 that overlaps with the first holes H1 and H1'. Because the first sub-release film RFL2_1 has the characteristic of transmitting light, the camera H_CAM can capture images of the first holes H1 and H1'.

[0194] The first hole H1 and the first hole H1' can be inspected using the camera H_CAM. For example, the camera H_CAM can be used to check whether the first hole H1 and the first hole H1' are properly aligned. In addition, the camera H_CAM can be used to check whether there are foreign substances in the first hole H1 and the first hole H1'.

[0195] If the first part PT1 is not removed, the first sub-release film RFL2_1 and the second sub-release film RFL2_2 can be formed as two release films between the camera H_CAM and the support SUP. Because the light transmittance is degraded by the first sub-release film RFL2_1 and the second sub-release film RFL2_2, it is difficult to properly photograph the first hole H1 and the first hole H1' through the camera H_CAM.

[0196] According to some exemplary embodiments of the present invention, when the first hole H1 and the first hole H1' are inspected by the camera H_CAM, the first portion PT1 of the second sub-release film RFL2_2 can be removed. Therefore, the first hole H1 and the first hole H1' can be inspected more easily by the camera H_CAM.

[0197] Reference Figure 20 After inspecting the first holes H1 and H1' using camera H_CAM, the temporarily removed first portion PT1 can be located at the first holes H1 and H1' and then reattached to the first sub-release film RFL2_1. Afterward, the support SUP and display module DM can be transferred to the next process.

[0198] Figure 21 and Figure 22 It is along Figure 6A The cross-sectional view taken along line V-V' is a diagram used to illustrate the process of transferring the support.

[0199] For example, Figure 21 and Figure 22 A cross-sectional view of the support member SUP, the first release film RFL1, and the second release film RFL2 is shown.

[0200] Reference Figure 21 The first cut-off portion INC1 can be confined within the first sub-release membrane RFL2_1 and the second sub-release membrane RFL2_2. The second cut-off portion INC2 can be confined within the first sub-release membrane RFL2_1 and the second sub-release membrane RFL2_2.

[0201] The portion of the first protrusion PRT1 that is spaced apart from the support member SUP but not from the first cut-off portion INC1 can be defined as a first flat portion PP1 and can be in a flat state. The portion of the second protrusion PRT2 that is spaced apart from the support member SUP but not from the second cut-off portion INC2 can be defined as a second flat portion PP2 and can be in a flat state.

[0202] The first flat portion PP1 can be defined as the portion of the first protrusion PRT1 located outside the first cut-off portion INC1. The second flat portion PP2 can be defined as the portion of the second protrusion PRT2 located outside the second cut-off portion INC2.

[0203] The transfer portion MOV for transferring the support SUP can be located at the first protrusion PRT1 and the second protrusion PRT2. The transfer portion MOV can be located at the first flat portion PP1 and the second flat portion PP2, respectively.

[0204] Reference Figure 22The transfer section MOV can move downwards to adsorb the first flat portion PP1 and the second flat portion PP2, respectively. The transfer section MOV can adsorb the first flat portion PP1 and the second flat portion PP2 by vacuum adsorption. For example, pores are defined in the transfer section MOV, and adsorption force can be provided while maintaining the pores in a vacuum state.

[0205] The transfer unit MOV can adsorb the first flat portion PP1 and the second flat portion PP2 to transfer the second release film RFL2. Therefore, the support member SUP located on the second release film RFL2 and the first release film RFL1 can be transferred via the transfer unit MOV. For example, the support member SUP can be transferred via the transfer unit MOV to the process chamber for use as... Figure 11 and Figure 12 The diagram shows the display module DM attached to the support SUP.

[0206] Figure 23 This is a diagram of a second release film on which the first and second cut-off portions are not formed.

[0207] For example, Figure 23 It shows the relationship with Figure 21 The corresponding sectional view.

[0208] Reference Figure 23 The first protrusion PRT1 and the second protrusion PRT2, located outside the support member SUP, are not attached to the support member SUP. In this case, stress may occur where the ends of the first protrusion PRT1 and the second protrusion PRT2 tend to curl upwards. Due to this stress, such as Figure 23 As shown, the first protrusion PRT1 and the second protrusion PRT2 may be bent upwards.

[0209] The transfer part MOV can be located on the first protrusion PRT1 and the second protrusion PRT2. When each of the first protrusion PRT1 and the second protrusion PRT2 is in a flat state, the transfer part MOV can hold the first protrusion PRT1 and the second protrusion PRT2. However, when the first protrusion PRT1 and the second protrusion PRT2 are bent, the transfer part MOV may not be able to hold the bent first protrusion PRT1 and the second protrusion PRT2. Therefore, the transfer part MOV may not be able to transfer the support member SUP.

[0210] Reference Figure 21 The first cut-off portion INC1 and the second cut-off portion INC2 can be respectively defined in the portions of the first protrusion PRT1 and the second protrusion PRT2 adjacent to the support member SUP. In this case, the stress on the first protrusion PRT1 and the second protrusion PRT2 can be reduced.

[0211] As stress decreases, the portions of the first protrusion PRT1 and the second protrusion PRT2 located outside the first cut-off portion INC1 and the second cut-off portion INC2 can become flatter. Therefore, a flat first flat portion PP1 and a flat second flat portion PP2 are formed, and the transfer portion MOV can absorb the first flat portion PP1 and the second flat portion PP2 to transfer the support member SUP.

[0212] Figure 24 It is shown Figure 8 The diagram shows the laminated structure of the first release film.

[0213] For example, in Figure 24 In the image, the first plate PLT1 is shown together with the first release film RFL1.

[0214] Reference Figure 24 The first release film RFL1 may include a base film BFL and an adhesive layer ADH located between the base film BFL and the first plate PLT1. The adhesive layer ADH may be formed on the bottom surface of the base film BFL. The adhesive layer ADH may include urethane adhesive.

[0215] The first release film RFL1 can be attached to the first plate PLT1 via the adhesive layer ADH. For example... Figure 11 As shown, in order to attach the display module DM to the support SUP, the first release film RFL1 can be removed.

[0216] If the adhesive layer ADH contains silicone adhesive, the properties of the silicone adhesive can be transferred to the top surface of the first plate PLT1 when the first release film RFL1 is removed, and an oil film can be formed on the top surface of the first plate PLT1. When the display module DM is attached to the top surface of the first plate PLT1, the adhesive force between the display module DM and the first plate PLT1 may be reduced due to the oil film.

[0217] When an adhesive layer ADH containing urethane adhesive is used, the adhesion between the display module DM and the first board PLT1 can be enhanced. According to some exemplary embodiments of the present invention, the adhesive layer ADH can have a thickness of about 7 micrometers (μm) to about 10 micrometers (μm). Furthermore, the adhesive layer ADH can have an adhesive strength of about 8 gf to about 12 gf.

[0218] Table 1 below shows the experimental results using urethane adhesive and silicone adhesive. Table 1 shows an example in which the release film using urethane adhesive is removed from the first plate PLT1, and then conductive tape is attached to the first plate PLT1 to measure the adhesive strength of the conductive tape. Furthermore, Table 1 shows the results of a test in which the release film using silicone adhesive is removed from the first plate PLT1, and then conductive tape is attached to the first plate PLT1 to measure the adhesive strength of the conductive tape.

[0219] In Table 1, "Number of Experiments" indicates the number of experiments, and "Before Attachment" indicates the test results obtained by measuring the adhesive force of the conductive tape after attaching only the conductive tape to the first plate PLT1 without attaching the release film to the first plate PLT1. In Table 1, "Immediate Removal" indicates the test results obtained by measuring the adhesive force of the conductive tape when the release film using urethane adhesive and the release film using silicone adhesive are immediately removed after being attached to the first plate PLT1, and then the conductive tape is attached to the first plate PLT1.

[0220] In Table 1, time represents the elapsed time after the release films using urethane adhesive and silicone adhesive were attached to the first plate PLT1. In Table 1, "after a set or predetermined time" indicates the test result obtained by measuring the adhesive force of the conductive tape after removing the release films using urethane adhesive and silicone adhesive from the first plate PLT1 and attaching the conductive tape to it.

[0221] Table 1

[0222]

[0223] Referring to Table 1, it can be seen that when using urethane adhesive, the adhesive force of the conductive tape on the first plate PLT1 is greater than that when using silicone adhesive, as shown in the average values ​​of the experimental results. That is, after removing the release film using urethane adhesive from the first plate PLT1, when the display module DM is attached to the first plate PLT1, the display module DM can be attached more firmly than the first plate PLT1.

[0224] Polyurethane adhesives can be cheaper than silicone adhesives. Using release films that include polyurethane adhesives can reduce the manufacturing cost of display devices.

[0225] Figure 25 It is shown that Figure 12 The image shows the display panel in a bent state.

[0226] Reference Figure 25, Figure 12 The second release film RFL2 and the third release film RFL3 shown can be removed, and the bending region BA can be bent, so that the second region AA2 can be formed below the first region AA1. Therefore, the data driver DDV can be formed below the first region AA1.

[0227] The spacer SPC can be located at the portion from which the third release film RFL3 is removed. The spacer SPC can be located below the first plate PLT1. The second portion PPL_2 of the panel protective layer PPL can be located below the spacer SPC.

[0228] The spacer SPC can be a double-sided adhesive tape. For example, the spacer SPC may include a base layer such as flexible polyethylene terephthalate and adhesive layers formed on the top and bottom surfaces of the base layer. The second portion PPL_2 of the panel protective layer PPL can be attached to the spacer SPC. Therefore, it can be as follows: Figure 22 The manufacturing process of the display device DD is shown in the figure.

[0229] The display device DD may include a protective layer BPL. The protective layer BPL may be formed at the curved region BA, the portion of the first region AA1 adjacent to the curved region BA, and the portion of the second region AA2 adjacent to the curved region BA. The protective layer BPL may extend continuously from the portion of the first region AA1 adjacent to the curved region BA to the portions of the second region AA2 adjacent to the curved region BA.

[0230] The protective layer BPL can be used to protect the bending region BA. The protective layer BPL can cover the lines formed in the bending region BA to protect them. The protective layer BPL can supplement the stiffness of the bending region BA and prevent it from cracking when the bending region BA bends. The protective layer BPL can protect the bending region BA from external impacts.

[0231] According to some exemplary embodiments of the present invention, when manufacturing a display device, the portion of the second release film overlapping with the first hole defined in the display module and support member can be removed to inspect the first hole using a camera. Therefore, the first hole can be inspected more easily.

[0232] Furthermore, the cut-off portion can be defined in a protrusion of the second release film that extends beyond the support member. The transfer portion for transferring the support member can more easily transfer the support member by adsorbing the portion of the second release film located outside the cut-off portion.

[0233] It will be apparent to those skilled in the art that various modifications and variations can be made to this invention. Therefore, this invention is intended to cover such modifications and variations, provided they fall within the scope of the appended claims and their equivalents. Thus, to the fullest extent permitted by law, the scope of embodiments according to this invention will be determined by the broadest permissible interpretation of the appended claims and their equivalents, and should not be construed as limited or restricted by the foregoing detailed description.

Claims

1. Release film, including: First release film; as well as The second release film is located below the first release film. The second release film includes: The first release film is located below the first release film; and The second release film is located below the first release film and includes a first portion and a second portion partially surrounding the first portion. The first portion is attached to the first release membrane and is capable of being separated from the first release membrane.

2. The release film according to claim 1, wherein, The second release film also includes a stem extending from the first portion.

3. The release film according to claim 2, wherein, The handle protrudes beyond the exterior of the first release film.

4. The release film according to claim 2, wherein, The first portion is configured to separate from the first release film by using the handle portion.

5. The release film according to claim 2, further comprising a silicone resin adhesive between the first sub-release film and the second sub-release film.

6. The release film according to claim 1, wherein, The first part can be separated from the second part.

7. The release film according to claim 1, wherein, The second release film also includes: A first protrusion extends to the outside of a first side of the support member, the support member being below the first release film and above the second release film; and The second protrusion extends to the outside of the second side of the support member. The first side and the second side of the support member are opposite to each other in a first direction.

8. The release film according to claim 7, wherein, The first cut-off portion is defined within the first protrusion.

9. The release film according to claim 8, wherein, The first cut-off portion extends in a second direction intersecting the first direction and is defined between the two sides of the first protrusion, the two sides of the first protrusion being opposite to each other in the second direction.

10. The release film according to claim 9, wherein, The second cut-off portion is defined within the second protrusion.

11. The release film according to claim 10, wherein, The second cut-off portion extends in the second direction and is defined between the two sides of the second protrusion, the two sides of the second protrusion being opposite to each other in the second direction.

12. The release film according to claim 10, wherein, The multiple transfer portions of the support member are configured to attract the portion of the first protrusion outside the first cut-off portion and the portion of the second protrusion outside the second cut-off portion.

13. The release film according to claim 1, further comprising a third release film below the first release film. in, The third release film is adjacent to the second release film and does not overlap with the second release film in the plan view.

14. The release film according to claim 1, wherein, The first release film includes: Base film; and An adhesive layer is located on the bottom surface of the base film. The adhesive layer includes urethane adhesive.

15. The release film according to claim 14, wherein, The adhesive layer has a thickness of 7 to 10 micrometers.

16. The release film according to claim 14, wherein, The adhesive layer has an adhesive strength of 8 gf to 12 gf.

17. Hole inspection methods, including: A first sub-release film and a second sub-release film are arranged on a support member, wherein the first sub-release film is on the support member, the second sub-release film is on the first sub-release film, and the second sub-release film includes a first portion and a second portion partially surrounding the first portion; The support component is arranged on the display module; The first portion, which overlaps with the first hole defined in the display module and the support, is separated from the first sub-release film; A camera is positioned on the portion of the first release film that overlaps with the first aperture; and The first hole is inspected using the camera.

18. The hole inspection method according to claim 17, further comprising: After inspecting the first hole, the first portion is attached to the first release film.

19. The hole inspection method according to claim 17, wherein, The second release film also includes a stalk extending from the first portion, and The handle protrudes beyond the first release film and the support.

20. The hole inspection method according to claim 19, wherein, The first part is separated from the first release film and separated from the second part by using the handle portion.

Images