Display panel transfer method

Abstract

A display panel transfer method includes providing a coating layer on a rear surface of a display panel, and providing an impact prevention layer on a rear surface of the coating layer, in which an area of the display panel is smaller than an area of the impact prevention layer and larger than an area of the coating layer when viewed in a plane.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Korean Patent Application No. 10-2023-0125889, filed on September 20, 2023, and all benefits arising therefrom, the contents of which are incorporated herein by reference in their entirety. Technical Field

[0003] The present invention relates to a display panel, and more particularly to a display panel transfer method Background Art

[0004] Display devices that provide images to users, such as televisions, monitors, smart phones, and tablet computers, include display panels that display images. Various display panels are being developed, including liquid crystal display panels, organic light emitting display panels, electrowetting display panels, and electrophoretic display panels.

[0005] Meanwhile, in recent years, research on thin display panels has been conducted to realize various types of display devices, such as a display device including a curved surface, a rollable display device, or a foldable display device.

[0006] The display panel may be contained in a pallet or a jig for transportation. During processing or transportation, the thin display panel may collide with the inside of the pallet or the jig. Cracks may occur in the display panel that collides with the inside of the pallet or the jig. Summary of the invention

[0007] An embodiment of the present invention is to prevent cracks from occurring in a display panel due to impact by disposing an impact prevention layer under the display panel, the impact prevention layer having an area larger than that of the display panel.

[0008] According to an embodiment, a display panel transfer method includes providing a coating layer onto a rear surface of a display panel and providing an impact preventing layer onto the rear surface of the coating layer, and when viewed on a plane, an area of ​​the display panel is smaller than an area of ​​the impact preventing layer and larger than an area of ​​the coating layer.

[0009] According to an embodiment, a display panel transfer method includes preparing a display panel, and providing a coating layer onto a rear surface of the display panel, wherein providing the coating layer includes providing a flat component and providing a plurality of protrusions arranged adjacent to a periphery of the flat component, wherein the flat component extends in a first direction and in a second direction intersecting the first direction, wherein an area of ​​the flat component is smaller than an area of ​​the display panel when viewed on a plane. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The above and other objects and features of the present invention will become apparent by describing in detail embodiments of the present invention with reference to the attached drawings.

[0011] Figure 1 is a perspective view of a display device according to an embodiment.

[0012] Figure 2 According to the embodiment Figure 1 An exploded perspective view of the display device shown in FIG.

[0013] Figure 3 is a diagram showing a method according to an embodiment of the present invention. Figure 1 A cross-sectional side view of some components of a display device.

[0014] Figure 4 According to the embodiment Figure 3 A cross-sectional view of a display panel shown in FIG.

[0015] Figure 5 is a view showing a display panel and a coating layer according to an embodiment.

[0016] Figure 6 is a diagram showing a method according to an embodiment of the present invention. Figure 5 View of the coating layer shown in .

[0017] Fig. 7A The method for manufacturing the Figure 3 A perspective view of the method of coating a layer is shown in FIG.

[0018] Figure 7B The method for manufacturing the Figure 3 A perspective view of the method of coating a layer is shown in FIG.

[0019] Figure 7C The method for manufacturing the Figure 3 A perspective view of the method of coating a layer is shown in FIG.

[0020] Fig.7D The method for manufacturing the Figure 3 A perspective view of the method of coating a layer is shown in FIG.

[0021] Figure 8 is a perspective view illustrating a display panel and transfer of a coating layer according to an embodiment.

[0022] Fig.9A is a diagram showing a method for providing a Figure 8 A perspective view of a method of forming an impact prevention layer.

[0023] Fig. 9B is a diagram showing a method for providing a Figure 8 A perspective view of a method of forming an impact prevention layer.

[0024] Fig. 9C is a diagram showing a method for providing a Figure 8 A cross-sectional view of a method of forming an impact prevention layer.

[0025] Fig.9D is a diagram showing a method for providing a Figure 8 A cross-sectional view of a method of forming an impact prevention layer.

[0026] Fig.9E is a diagram showing a method for providing a Figure 8 A cross-sectional view of a method of forming an impact prevention layer.

[0027] Fig.9F is a diagram showing a method for providing a Figure 8 A perspective view of a method of forming an impact prevention layer.

[0028] Fig. 10A is a cross-sectional side view illustrating a display panel and transfer of a coating layer according to an embodiment.

[0029] Fig. 10B is a cross-sectional side view illustrating a display panel and transfer of a coating layer according to an embodiment.

[0030] Fig.11A is a perspective view showing a coating layer according to an embodiment.

[0031] Fig. 11B is a plan rear view showing a coating layer according to an embodiment.

[0032] Fig. 11C is a side view showing a coating layer according to an embodiment.

[0033] Fig.12 is a bottom view showing a coating layer according to an embodiment. DETAILED DESCRIPTION

[0034] The advantages and features of the present invention and methods for achieving them will become clear with reference to the embodiments described in detail below in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and these embodiments only make the disclosure of the present invention complete and are provided to fully inform the ordinary technicians in the field to which the present invention belongs and the scope of the present invention. Throughout the specification, the same reference numerals refer to the same components.

[0035] The expression that an element or layer is "on" another element or layer, "connected to" or "coupled to" another element or layer means not only that the element or layer is directly on the other element or layer, but also that a third layer or element is interposed between the element or layer and the other element or layer. Meanwhile, the expression that an element is "directly on" another element means that there is no third element or layer interposed between the element or layer and the other element or layer. The expression "and / or" includes each of the items and all combinations of one or more items in the items.

[0036] The expressions "below", "under", "below", "above" as spatially relative terms may be used to easily describe the relationship of one element or component to another element and component as shown in the drawings. The spatially relative terms should be understood as terms that also include different orientations of an element during its operation in addition to the orientation shown in the drawings. Throughout the specification, the same reference numerals refer to the same components.

[0037] Although the expressions first, second, etc. are used to describe various elements, components, and / or parts, it is apparent that these elements, components, and / or parts are not limited by these terms. These terms are used to simply distinguish one element, component, or part from another element, component, or part. Therefore, it is apparent that within the technical spirit of the present disclosure, a first element, first component, or first part to be described below may be a second element, second component, or second part.

[0038] The embodiments described in the specification will be described with reference to views that are ideal schematic diagrams of the present invention. Therefore, the form of the exemplary views may be modified according to manufacturing techniques and / or allowed errors. Therefore, embodiments of the present invention are not limited to the specific forms shown, but include changes in shapes formed according to manufacturing processes. Therefore, the regions illustrated in the drawings have schematic properties, and the shapes of the regions illustrated in the drawings are provided to illustrate specific shapes of the regions, without intending to limit the scope of the present invention.

[0039] The same reference numerals will be assigned to the same components. In addition, in the drawings, the thickness, proportion and size of the components may be exaggerated to effectively describe the technical features. The term "and / or" includes any and all combinations of one or more of the associated components.

[0040] In addition, the terms "below", "at the lower part", "on", and "upper" are used to describe the relationship between components shown in the drawings. These terms are relative and are described with reference to the directions shown in the drawings.

[0041] It will also be understood that the terms “comprises, comprising, includes, or including” or “having” indicate the presence of features, numbers, steps, operations, components, parts, or combinations thereof, but do not exclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, and / or combinations thereof.

[0042] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this specification have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. In addition, unless explicitly defined herein, terms (such as those defined in general dictionaries) should be interpreted as having a meaning consistent with the meaning in the context of the relevant technology, and should not be interpreted without an idealized or overly formal meaning.

[0043] Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

[0044] Figure 1 is a perspective view of a display device according to an embodiment. Figure 2 According to the embodiment Figure 1 An exploded perspective view of the display device shown in FIG.

[0045] In an embodiment, Figure 1 It is exemplarily shown that the display device DD is a mobile phone. However, the display device DD is not limited thereto and may be a medium / small display device such as a tablet computer, a vehicle navigation device, a game console, a wearable device, or a camera.

[0046] In an embodiment, the display device DD may display an image IM through the active area AA-DD. The active area AA-DD may include a plane defined by the first direction DR1 and the second direction DR2. The active area AA-DD may also include a curved surface bent from one side of the flat surface defined by the first direction DR1 and the second direction DR2. Figure 1 The display device DD shown in FIG. 1 includes two curved surfaces bent from opposite sides of a plane defined by a first direction DR1 and a second direction DR2. However, the shape of the active area AA-DD is not limited thereto. For example, the active area AA-DD may include only a plane and may also include two or more curved surfaces bent from two or more sides of the plane (e.g., four curved surfaces bent from four sides of the plane).

[0047] In an embodiment, Figure 1 The following drawings respectively illustrate a first direction DR1, a second direction DR2, and a third direction DR3, and directions respectively indicated by the first direction DR1, the second direction DR2, and the third direction DR3 described in the specification may be converted into different directions as relative concepts.

[0048] In the present specification, the first direction DR1 and the second direction DR2 may be directed to be perpendicular to each other, and the third direction DR3 may be directed to a normal direction of a plane defined by the first direction DR1 and the second direction DR2. In the specification, the meaning of "on a plane" may mean a direction observed on the plane defined by the first direction DR1 and the second direction DR2, and the thickness direction may mean the third direction DR3 which is a direction of a normal direction of the plane defined by the first direction DR1 and the second direction DR2.

[0049] In an embodiment, the display device DD may include an active area AA-DD and a peripheral area NAA-DD disposed adjacent to the active area AA-DD. The active area AA-DD may correspond to the display panel DP (see Figure 2 ) display area AA (see Figure 2 ), which will be described below, and the non-display area NAA (see Figure 2 ) may correspond to the peripheral area NAA-DD of the display panel DP.

[0050] In an embodiment, the peripheral area NAA-DD is an area that interrupts the optical signal and may be disposed outside the active area AA-DD to surround the active area AA-DD. In an embodiment, the peripheral area NAA-DD may not be disposed on the front surface of the display device DD but on the side surface of the display device DD. In an embodiment, the peripheral area NAA-DD may be omitted.

[0051] In the embodiments, reference Figure 1 and Figure 2 , the display device DD may include a window WM, a housing HU, a display module DM, a circuit board DC and an upper member UM.

[0052] In an embodiment, the display device DD may include a window WM disposed on the display module DM. The window WM may provide an outer surface of the display device DD. Although not shown, the window WM may include a base substrate and may also include a functional layer (such as a reflection prevention layer, a fingerprint prevention layer) or an optical layer that controls a phase.

[0053] In an embodiment, the upper member UM of the display device DD may be disposed between the window WM and the display module DM. The upper member UM may include a reflection prevention layer and an input sensor. The reflection prevention layer may reduce the reflectivity of external light. The input sensor may sense the external input of the user. The upper member UM may further include an adhesive layer coupling the reflection prevention layer and the input sensor.

[0054] In an embodiment, the display module DM may be disposed under the upper member UM. The display module DM may include a display panel DP and a coating layer LM.

[0055] In an embodiment, the display panel DP may include a display area AA displaying an image IM and a non-display area NAA disposed adjacent to the display area AA. That is, the front surface of the display panel DP may include the display area AA and the non-display area NAA. The display area AA may be an area activated according to an electrical signal.

[0056] In an embodiment, the non-display area NAA may be disposed adjacent to the display area AA. The non-display area NAA may surround the display area AA. A driving circuit or driving wiring for driving the display area AA, a signal line providing an electrical signal to the display area AA, a pad, or an electronic component may be disposed in the non-display area NAA.

[0057] In an embodiment, the display panel DP may include a light emitting element layer DP-ED (see Figure 4 ), the light emitting element layer DP-ED includes an organic light emitting element, a quantum dot light emitting element, a micro light emitting diode (LED) light emitting element or a nano LED light emitting element. The light emitting element layer DP-ED (see Figure 4 ) can be a configuration that basically generates an image.

[0058] In an embodiment, the display device DD may include a circuit board DC connected to the display panel DP. The circuit board DC may include a flexible board CF and a main board MB. The flexible board CF may include an insulating film and a conductive wiring mounted on the insulating film. The conductive wiring may be connected to the pad PD and may electrically connect the circuit board DC and the display panel DP. Meanwhile, in an embodiment, the flexible board CF may be omitted, and then the main board MB may be directly connected to the display panel DP.

[0059] In an embodiment, the main board MB may include signal lines and electronic components not shown. The electronic components may be connected to the signal lines and may be electrically connected to the display panel DP. For example, the electronic components may generate a signal for generating an image IM or a signal for sensing an external input, or process a sensed signal. At the same time, a plurality of main boards MB may be provided to correspond to the electrical signals to be generated and processed and are not limited to any one embodiment.

[0060] In an embodiment, the coating layer LM may be disposed under the display panel DP. The coating layer LM may support the display panel DP and may perform a heat dissipation function of discharging heat generated in the display panel DP. Figure 5 Described in detail in.

[0061] In an embodiment, the housing HU may be disposed below the display module DM. The display module DM may be received in the housing HU. The housing HU may be coupled to the window WM to constitute an appearance of the display device DD.

[0062] Figure 3 is a cross-sectional side view showing some components of a display device according to an embodiment.

[0063] In an embodiment, Figure 3 is a side view of the display device DD viewed in the first direction DR1.

[0064] In the embodiments, reference Figure 3 , the window WM may cover the front surface of the display panel DP. The window WM may include a base substrate WM-BS and a frame pattern WM-BZ. The base substrate WM-BS may include a transparent first base layer, such as a glass substrate or a transparent film. The frame pattern WM-BZ may have a multilayer structure. The multilayer structure may include a colored color layer and a black light shielding layer. The colored color layer and the black light shielding layer may be formed by deposition, printing and coating processes. The frame pattern WM-BZ may be omitted from the window WM and may be provided in the upper member UM.

[0065] In an embodiment, the upper member UM may include a reflection prevention layer UM-1 and an input sensor UM-2. The reflection prevention layer UM-1 may reduce the reflectivity of external light. The reflection prevention layer UM-1 may include a phase retarder and / or a polarizer. The reflection prevention layer UM-1 may include a polarizing film or a color filter. The color filter may have a specific arrangement. The color filter may be arranged in consideration of the luminous color of the pixels included in the display panel DP. The reflection prevention layer UM-1 may also include a spacer layer adjacent to the color filter.

[0066] In an embodiment, the input sensor UM-2 may include a plurality of sensing electrodes (not shown) for sensing external input, traces (not shown) connected to the plurality of sensing electrodes, and an organic layer and / or an inorganic layer for insulating / protecting the plurality of sensing electrodes or traces. The input sensor UM-2 may be a capacitive sensor, and the present invention is not limited thereto.

[0067] In an embodiment, when manufacturing the display panel DP, the input sensor UM-2 may be directly formed on the display panel DP to be described later through a continuous process. Figure 4 However, the present invention is not limited thereto, and the input sensor UM-2 may be manufactured separately from the display panel DP and may be attached to the display panel DP through an adhesive layer.

[0068] In an embodiment, Figure 3Different from the illustration, an adhesive layer may be further provided between the window WM and the anti-reflection layer UM-1. An adhesive layer may be further provided between the anti-reflection layer UM-1 and the input sensor UM-2. The window WM, the anti-reflection layer UM-1 and the input sensor UM-2 may be coupled to each other through the adhesive layer.

[0069] In an embodiment, the circuit board DC may include a flexible board CF and a main board MB. The flexible board CF may be assembled while being bent. Therefore, the main board MB may be disposed on the rear surface of the display panel DP and may be stably accommodated in the housing HU (see Figure 2 ) in a space defined by the display panel DP. For example, the flexible board CF may be bent in the direction of the rear surface of the display panel DP and may be disposed on the rear surface of the coating layer LM. When the flexible board CF is bent, the main board MB may be disposed on the rear surface of the coating layer LM.

[0070] In an embodiment, the coating layer LM may be disposed on the lower surface of the display panel DP. The coating layer LM may contact the circuit board DC. The periphery of the coating layer LM may be disposed on the inner side of the periphery of the display panel DP. The coating layer LM will Figure 5 Described in detail in.

[0071] Figure 4 According to the embodiment Figure 3 A cross-sectional view of a display panel is shown.

[0072] In an embodiment, the display panel DP may include a base substrate BL, a circuit layer DP-CL disposed on the base substrate BL, a light emitting element layer DP-ED, and an encapsulation layer ENL. The base substrate BL may include a plastic substrate, a glass substrate, a metal substrate, or an organic / inorganic composite material substrate. For example, the base substrate BL may include at least one polyimide layer.

[0073] In an embodiment, the circuit layer DP-CL may include at least one insulating layer, a semiconductor pattern and a conductive pattern. The insulating layer may include at least one inorganic layer and at least one organic layer. The semiconductor pattern and the conductive pattern may constitute a signal line, a pixel driving circuit and a scan driving circuit. In addition, the circuit layer DP-CL may further include a back metal layer.

[0074] In an embodiment, the light emitting element layer DP-ED may include a display element, for example, a light emitting element. The light emitting element may be an organic light emitting element, a quantum dot light emitting element, a micro LED light emitting element or a nano LED light emitting element. The light emitting element layer DP-ED may also include an organic layer, such as a pixel defining film.

[0075] In an embodiment, the light emitting element layer DP-ED may be disposed in the display area AA. The non-display area NAA may be disposed outside the display area AA to surround the display area AA, and the light emitting element layer DP-ED may not be disposed in the non-display area NAA.

[0076] In an embodiment, the encapsulation layer ENL may be disposed on the light emitting element layer DP-ED and may cover the light emitting element layer DP-ED. The encapsulation layer ENL may be disposed on the circuit layer DP-CL to seal the light emitting element layer DP-ED. The encapsulation layer ENL may be a thin film encapsulation layer including at least one organic film and at least one inorganic film. The encapsulation layer ENL may have a stacked structure of inorganic layer / organic layer / inorganic layer. The stacked structure of the encapsulation layer ENL is not limited thereto.

[0077] Figure 5 is a view showing a display panel and a coating layer according to an embodiment. Figure 6 is a diagram showing a method according to an embodiment of the present invention. Figure 5 View of the coating layer shown in .

[0078] In an embodiment, Figure 5 is a cross-sectional view of the display module DM viewed in the first direction DR1, and Figure 6 is a cross-sectional view of the coating layer LM viewed in the first direction DR1.

[0079] In an embodiment, Figure 5 The display panel DP and Figure 4 The display panel DP is the same as that of FIG. 1 , and thus a description thereof will be omitted or briefly described.

[0080] In the embodiments, reference Figure 5 and Figure 6 , the coating layer LM may be disposed on the lower surface of the display panel DP. The lowermost surface of the display module DM may be defined by the lowermost surface of the coating layer LM.

[0081] In an embodiment, the coating layer LM may include a first base layer BS1 and a plurality of first fillers FP1 disposed in the first base layer BS1. The coating layer LM may be a single layer including the first base layer BS1 and the first fillers FP1. The first fillers FP1 may be fillers dispersed in the first base layer BS1.

[0082] In an embodiment, the coating layer LM may include a first base layer BS1 and a first filler FP1, and thus may perform various functions in the display module DM. As an example, the coating layer LM may support the display panel DP. The coating layer LM may protect the display panel DP from the display device DD (see Figure 1 ) from the outside.

[0083] In an embodiment, the coating layer LM may perform a heat dissipation function of discharging heat generated in the display panel DP. As an example, the coating layer LM may perform an electronic wave shielding function. However, the function of the coating layer LM is not limited thereto, and the coating layer LM may additionally perform other functions depending on the characteristics of the coating layer LM such as thickness and material.

[0084] In the embodiment, since the coating layer LM including a single layer performs a function of supporting the display panel DP, a heat dissipation function, and an electron wave shielding function, the display device DD (see Figure 1 ) can be reduced in thickness and its components can be simplified. Figure 1 ), the process efficiency can be improved.

[0085] In an embodiment, the thickness d1 of the coating layer LM may be about 100 micrometers to about 1000 micrometers. The viscosity of the coating layer LM may be not less than about 100 cps and not more than about 100,000 cps. As an example, the viscosity of the coating layer LM may be about 30,000 cps. Therefore, the coating layer LM may support the display panel DP in the display module DM.

[0086] In an embodiment, the first base layer BS1 may be a layer providing a base material so that the first filler FP1 is disposed. The first base layer BS1 may include an organic material. The first base layer BS1 may be formed to include at least one of an acrylic-based polymer, a urethane-based polymer, a silicone polymer, and an imide-based polymer. The first base layer BS1 may include a material having a certain strength.

[0087] In an embodiment, each of the first fillers FP1 may include an organic material or an inorganic material. As an example, each of the first fillers FP1 may include graphite or metal particles. The first fillers FP1 may include the same material or may include different materials. Therefore, the coating layer LM may perform functions such as the display device DD (see Figure 1 )’s heat dissipation and electron wave shielding functions.

[0088] In an embodiment, the average diameter d2 of the first filler FP1 may be about 5 micrometers to about 200 micrometers if it is smaller than the thickness d1 of the coating layer LM. Figure 6 , it is shown that the sizes of the diameters of the first fillers FP1 are the same, but the present invention is not limited thereto, and the first fillers FP1 may have a single dispersion size distribution or a polydispersion distribution obtained by mixing a plurality of particles of a single dispersion distribution.

[0089] 7A to 7D The method for manufacturing the Figure 3A perspective view of the method of coating a layer is shown in FIG.

[0090] As an example, 7A to 7D It is a perspective view.

[0091] In an embodiment, 7A to 7D The display panel DP and the first filler FP1 are connected to Figure 4 Display panel DP and Figure 5 The first filler FP1 is the same as Fig.7D The coating layer LM and Figure 5 The coating layer LM is the same as that of FIG. 5 , and therefore, a description thereof will be omitted or briefly described.

[0092] In the embodiments, reference Fig. 7A , used to make the coating layer LM (see Fig.7D ) includes an operation of providing the display panel DP onto the upper surface of the platform STG.

[0093] In an embodiment, the platform STG may have a rectangular parallelepiped shape. When viewed on a plane, an upper surface of the platform STG may have a rectangular shape having short sides extending in the first direction DR1 and long sides extending in the second direction DR2.

[0094] In an embodiment, the display panel DP may be disposed on the upper surface of the platform STG. Figure 2 ) can be arranged to face the upper surface of the platform STG.

[0095] In an embodiment, although not shown, a vacuum suction hole may be defined on the upper surface of the platform STG. The vacuum suction hole may be connected to an external vacuum pump. When the display panel DP is disposed on the upper surface of the platform STG, the vacuum suction hole may be converted into a vacuum state by the vacuum pump. Therefore, the display panel DP may be fixed on the upper surface of the platform STG.

[0096] In the embodiments, reference Figure 7B and 7C , an operation of providing the display panel DP onto the upper surface of the platform STG and then disposing the metal frame MFS on the display panel DP may be performed.

[0097] In an embodiment, the metal frame MFS may have a rectangular frame shape. When viewed on a plane, the metal frame MFS may include short sides extending in the first direction DR1 and long sides extending in the second direction DR2.

[0098] In an embodiment, an opening OP may be defined in the metal frame MFS having a rectangular frame shape. The shape of the opening OP may be a rectangle when viewed on a plane.

[0099] In an embodiment, the metal frame MFS may be disposed on the platform STG and the display panel DP. The metal frame MFS may be disposed on the back surface BS of the display panel DP. The back surface BS of the display panel DP may be formed by contacting the active area AA in the third direction DR3 (see Figure 2 ) is defined by a surface opposite to the metal frame MFS. The opening OP may overlap with the rear surface BS of the display panel DP. When viewed on a plane, a portion of the rear surface BS of the display panel DP may be exposed to the outside from the metal frame MFS through the opening OP. When viewed on a plane, an area of ​​the opening OP may be smaller than an area of ​​the display panel DP.

[0100] In the embodiments, reference Figure 7C , an operation of disposing the metal frame MFS on the back surface BS of the display panel DP and then applying the resin RS onto the back surface BS of the display panel DP may be performed.

[0101] In an embodiment, the resin RS may be discharged into the opening OP through a nozzle (not shown). The resin RS may be discharged into the opening OP and may be disposed on the back surface BS of the display panel DP.

[0102] In an embodiment, the resin RS may include a preliminary base layer IBS and a first filler FP1 dispersed in the preliminary base layer IBS. As an example, the resin RS may include a photocurable resin.

[0103] In the embodiments, reference Figure 7C and Fig.7D Although not shown, an operation of disposing the resin RS in the opening OP and then curing the resin RS may be performed. As an example, the resin RS may be cured by ultraviolet rays. However, the present invention is not limited thereto, and when the resin RS includes a thermosetting material, the resin RS may be cured by heating.

[0104] In an embodiment, the resin RS may be cured and a coating layer LM may be provided to the rear surface BS of the display panel DP. When viewed on a plane, the area of ​​the coating layer LM may be smaller than the area of ​​the display panel DP. When viewed on a plane, the periphery of the coating layer LM may be disposed on the inner side of the periphery of the display panel DP.

[0105] Figure 8 is a perspective view illustrating a display panel and transfer of a coating layer according to an embodiment.

[0106] In an embodiment, Figure 8 is a perspective view of the display panel DP, the coating layer LM, and the impact preventing layer PTL.

[0107] In the embodiment, because Figure 8 The display panel DP and the coating layer LM are Figure 5 The display panel DP and the coating layer LM are the same, so the description thereof may be omitted or briefly described.

[0108] In the embodiments, reference Figure 8 , the coating layer LM is disposed on the rear surface BS of the display panel DP (see Fig.7D ), the display panel DP and the coating layer LM may be transferred for another process. Then, the impact prevention layer PTL may be disposed under the display panel DP and the coating layer LM. The impact prevention layer PTL may be disposed on the lower surface of the coating layer LM.

[0109] In an embodiment, the impact preventing layer PTL may have a rectangular parallelepiped shape. When viewed on a plane, the upper surface of the impact preventing layer PTL may have a rectangular shape having short sides extending in the first direction DR1 and long sides extending in the second direction DR2. However, the present invention is not limited thereto, and the shape of the upper surface of the impact preventing layer PTL may be determined differently.

[0110] In an embodiment, when viewed on a plane, the area of ​​the impact prevention layer PTL may be greater than the area of ​​the display panel DP. When viewed on a plane, the area of ​​the impact prevention layer PTL may be greater than the area of ​​the coating layer LM. Therefore, when viewed on a plane, the periphery of the impact prevention layer PTL may be disposed on the outer side of the periphery of the display panel DP and the periphery of the coating layer LM. The periphery of the impact prevention layer PTL may surround the display panel DP and the coating layer LM.

[0111] 9A to 9F is a diagram showing a method for providing a Figure 8 A view of a method of forming an impact protection layer.

[0112] In an embodiment, Fig.9A , Fig. 9B and Fig.9F is a perspective view, and Fig. 9C , Fig.9D and Fig.9E It is a cross-sectional view.

[0113] As an example, Fig. 9C According to the embodiment Fig. 9B A cross-sectional view along line II' shown in FIG.

[0114] In the embodiment, because 9A to 9F The display panel DP and the coating layer LM are Figure 5 The display panel DP and the coating layer LM are the same, so the description thereof will be omitted or briefly described.

[0115] In the embodiments, reference Fig.9A, used to provide an impact protection layer PTL (see Figure 8 ) may include an operation of providing a mold MD, and an operation of providing a protective resin PRS into the mold MD.

[0116] In an embodiment, the mold MD may have a rectangular parallelepiped shape. When viewed on a plane, the mold MD may have a rectangular shape having short sides extending in the first direction DR1 and long sides extending in the second direction DR2. The mold MD may be optically transparent.

[0117] In an embodiment, a mold groove MOP may be defined on an upper surface of the mold MD. The mold groove MOP may extend from an upper surface MPA1 of the mold MD in a third direction DR3. When viewed on a plane, the shape of the mold groove MOP may be a rectangle. When viewed on a plane, the upper surface MPA1 of the mold MD may have a rectangular frame shape. Hereinafter, the upper surface MPA1 of the mold MD may be defined as a first mold surface MPA1, and the lower surface of the mold MD may be defined as a second mold surface MPA2.

[0118] In an embodiment, a protective resin PRS may be provided to the mold cavity MOP. As an example, the protective resin PRS may include an ultraviolet curable material. As an example, the protective resin PRS may include an acrylic-based material or a urethane-based material.

[0119] In the embodiments, reference Fig.9A and Fig. 9B , an operation of providing the display panel DP and the coating layer LM on the mold MD when the protective resin PRS is provided to the mold groove MOP may be performed. The lower surface of the coating layer LM may be disposed to face the protective resin PRS.

[0120] In an embodiment, the display panel DP and the coating layer LM may be moved in the third direction DR3 and may be disposed on an upper surface of the protective resin PRS. A lower surface of the coating layer LM and an upper surface of the protective resin PRS may contact each other.

[0121] In the embodiments, reference Fig. 9B and Fig. 9C , when viewed on a plane, the area of ​​the mold groove MOP may be larger than the area of ​​the display panel DP. When viewed on a plane, the area of ​​the protective resin PRS may be larger than the area of ​​the display panel DP and the area of ​​the coating layer LM. Therefore, the periphery of the protective resin PRS may be disposed outside the periphery of the display panel DP and the periphery of the coating layer LM.

[0122] In an embodiment, after the display panel DP and the coating layer LM are disposed on the protective resin PRS, a preliminary curing operation of curing the protective resin PRS may be performed. The first ultraviolet rays UV1 may be irradiated to the protective resin PRS. The protective resin PRS may be cured by the first ultraviolet rays UV1. In the preliminary curing operation, the protective resin PRS may not be completely cured.

[0123] In the embodiments, reference Fig. 9C and Fig.9D , after the preliminary curing operation, an operation of flipping the mold MD, the protective resin PRS, the display panel DP, and the coating layer LM in the third direction DR3 may be performed. The mold MD, the protective resin PRS, the display panel DP, and the coating layer LM may be reversed in the upward / downward direction to point to the third direction DR3. The first mold surface MPA1 may be disposed below the second mold surface MPA2. The upper surfaces of the display panel DP and the protective resin PRS may be disposed below the second mold surface MPA2 of the mold MD. Then, the protective resin PRS is cured in the preliminary curing operation, and thus may not be separated from the mold groove MOP.

[0124] In an embodiment, a secondary curing operation of completely curing the protective resin PRS may be performed. The second ultraviolet UV2 may be irradiated onto the second mold surface MPA2 of the mold MD. The optical energy of the second ultraviolet UV2 may be greater than that of the first ultraviolet UV1 (see Fig. 9B ) optical energy. The second ultraviolet rays UV2 can pass through the mold MD and can reach the protective resin PRS. Therefore, the protective resin PRS can be completely cured by the second ultraviolet rays UV2.

[0125] In the embodiments, reference Fig.9E and Fig.9F , cured protective resin PRS (see Fig.9D ) may be defined as the impact preventing layer PTL. After the impact preventing layer PTL is formed, the mold MD may be removed from the impact preventing layer PTL.

[0126] In an embodiment, the impact prevention layer PTL may be disposed on the lower surface of the coating layer LM, and the impact prevention layer PTL may be transferred together with the display panel DP and the coating layer LM. When viewed on a plane, the area of ​​the impact prevention layer PTL may be greater than the area of ​​the display panel DP and the area of ​​the coating layer LM. The periphery of the impact prevention layer PTL may be disposed outside the periphery of the display panel DP and the periphery of the coating layer LM.

[0127] Fig. 10A and Fig. 10B 2 is a view illustrating a display panel and transfer of a coating layer according to an embodiment.

[0128] In an embodiment, Fig. 10A A display panel DP' and a coating layer LM' according to a comparative example are shown. Fig. 10B The display panel DP, the coating layer LM, and the impact preventing layer PTL according to the embodiment are illustrated.

[0129] In an embodiment, Fig. 10A and Fig. 10B 2 is a cross-sectional view of the display panels DP′ and DP and the coating layers LM′ and LM viewed in the second direction DR2.

[0130] In the embodiment, because Fig. 10A and Fig. 10B The display panels DP' and DP and the coating layers LM' and LM are respectively Figure 5 The display panel DP and the coating layer LM are the same, so the description thereof will be omitted or briefly described.

[0131] In the embodiment, because Fig. 10B The impact protection layer PTL and Figure 8 The impact prevention layer PTL is the same as that of the embodiment, so the description thereof will be omitted or briefly described.

[0132] In the embodiments, reference Fig. 10A and Fig. 10B , as an example, the display panels DP' and DP and the coating layers LM' and LM' may be respectively accommodated in the tray TR for transfer. The display panels DP and DP' and the coating layers LM and LM' may be accommodated in the accommodation groove SGR defined in the tray TR and may be transferred. However, the present invention is not limited thereto, and the display panels DP and DP' and the coating layers LM and LM' may be accommodated in the jig to be supplied.

[0133] In the embodiments, reference Fig. 10A The width of the display panel DP' in the first direction DR1 may be greater than the width of the coating layer LM' in the first direction DR1. Although not shown, the width of the display panel DP' in the second direction DR2 may be greater than the width of the coating layer LM' in the second direction DR2.

[0134] In an embodiment, when the display panel DP' and the coating layer LM' are accommodated in the accommodation groove SGR of the tray TR to be transferred, the tray TR may be shaken or tilted. In this case, the display panel DP' having a width greater than that of the coating layer LM' may contact the inner side of the tray TR defining the accommodation groove SGR earlier than the coating layer LM'. Therefore, an external impact may be applied to the display panel DP' and may cause cracks, etc. in the display panel DP'.

[0135] In the embodiments, reference Fig. 10B , the impact preventing layer PTL may be disposed below the display panel DP and the coating layer LM. The width of the impact preventing layer PTL in the first direction DR1 may be greater than the width of the display panel DP in the first direction and the width of the coating layer LM in the first direction DR1. Although not shown, the width of the impact preventing layer PTL in the second direction DR2 may be greater than the width of the display panel DP in the second direction and the width of the coating layer LM in the second direction DR2. That is, among the display panel DP, the coating layer LM and the impact preventing layer PTL, the width of the impact preventing layer PTL in the first direction DR1 and the second direction DR2 may be the largest.

[0136] In an embodiment, when the display panel DP, the coating layer LM, and the impact prevention layer PTL are accommodated in the accommodation groove SGR of the tray TR to be transferred, even when the tray TR is shaken or tilted, the impact prevention layer PTL may contact the outside of the tray TR defining the accommodation groove SGR earlier than the display panel DP. Due to the impact prevention layer PTL, the display panel DP may not contact the inside of the tray TR. Therefore, an external impact may not be applied to the display panel DP and damage to the display panel DP may be prevented.

[0137] In an embodiment, when another process is performed after the display panel DP, the coating layer LM, and the impact preventing layer PTL are received in the receiving groove SGR of the tray TR and transferred, the impact preventing layer PTL may be separated from the display panel DP and the coating layer LM.

[0138] FIG. 11A to FIG. 11C is a view showing a coating layer according to an embodiment.

[0139] In an embodiment, Fig.11A is a perspective view of the display panel DP and the coating layer LMa, and Fig. 11B It is a plan view of the coating layer LMa when viewed from the rear side. Fig. 11C is a cross-sectional view of the display panel DP and the coating layer LMa according to the embodiment in a state where they are accommodated in the tray TR.

[0140] In the embodiment, because FIG. 11A to FIG. 11C The display panel DP and Figure 5 The display panel DP is the same as that of the display panel DP, so its description will be omitted or briefly described.

[0141] In the embodiments, reference Fig.11A and Fig. 11B The coating layer LMa may be disposed under the display panel DP. The coating layer LMa may be disposed on the lower surface of the display panel DP.

[0142] In an embodiment, the coating layer LMa may include a planar part PLA and a plurality of protrusions PR When viewed on a plane, the planar part PLA may have a rectangular shape having short sides extending in the first direction DR1 and long sides extending in the second direction DR2 .

[0143] In an embodiment, when viewed on a plane, an area of ​​the planar part PLA may be smaller than an area of ​​the display panel DP. When viewed on a plane, an outer periphery of the planar part PLA may be disposed on an inner side of an outer periphery of the display panel DP.

[0144] In an embodiment, the protrusions PR may be provided at opposite sides of the flat part PLA that are opposite to each other in the first direction DR1, and at opposite sides of the flat part PLA that are opposite to each other in the second direction. As an example, two protrusions PR may be provided in each of the peripheries of the flat part PLA. The protrusions PR provided at the same periphery may be provided to be spaced apart from each other in the first direction DR1 or the second direction DR2. However, this is exemplary, and the number of protrusions PR provided in the periphery of the flat part PLA is not limited thereto.

[0145] In an embodiment, the protrusion PR may extend from the planar part PLA in the first direction DR1 and the second direction DR2. In essence, the protrusion PR and the planar part PLA may be integrally formed. Although not shown, the protrusion PR and the planar part PLA may be formed simultaneously.

[0146] In the examples, although not shown, the resin RS (see Figure 7C ) may be applied to the rear surface BS of the display panel DP (see Figure 7C ) and resin RS (see Figure 7C ) may be cured so that the protrusion PR and the flat part PLA may be provided to the rear surface BS of the display panel DP (see Figure 7C ).

[0147] In an embodiment, the protrusion PR may extend in the first direction DR1 and the second direction DR2 and may extend toward the periphery of the display panel DP. Portions of the protrusion PR may be disposed on the outside of the periphery of the display panel DP.

[0148] In the embodiment, the protrusion PR may have a rectangular shape when viewed on a plane, but the shape of the protrusion PR may not be limited thereto.

[0149] In an embodiment, a plurality of removal grooves STC may be defined at boundaries of the planar part PLA and the protrusion PR The removal grooves STC may be arranged in the first direction DR1 or the second direction DR2 along the periphery of the planar part PLA.

[0150] In the embodiment, since the removal groove STC is defined, the planar part PLA and the protrusion PR can be easily separated. The separation of the planar part PLA and the protrusion PR will be described below.

[0151] In the embodiments, reference FIG. 11A to FIG. 11C , the display panel DP and the coating layer LMa can be accommodated in the accommodating groove SGR of the tray TR to be transferred. When the display panel DP and the coating layer LMa are transferred, the tray TR may be shaken or tilted. However, because the protrusion PR of the coating layer LMa is provided outside the periphery of the display panel DP, the protrusion PR may contact the inner side of the tray TR earlier than the display panel DP. Therefore, the display panel DP may not contact the outer side of the tray TR and damage to the display panel DP due to impact may be prevented.

[0152] In an embodiment, before another process is performed after the display panel DP and the coating layer LMa are transferred, the flat part PLA and the protrusion PR may be separated. The protrusion PR may be separated from the flat part PLA along the removal groove STC. The protrusion PR may be separated from the lower surface of the display panel DP. Since the removal groove STC is defined, the protrusion PR and the flat part PLA may be easily separated.

[0153] Fig.12 is a view showing a coating layer according to an embodiment.

[0154] In an embodiment, Fig.12 is a plan view of the coating layer LMb viewed from the rear side.

[0155] In the embodiment, because Fig.12 The display panel DP, the protrusion PR and the flat member PLA are Fig. 11B The display panel DP, the protrusion PR, and the flat part PLA are the same, so the description thereof will be omitted or briefly described.

[0156] In the embodiments, reference Fig.12 , will mainly describe and Fig. 11B The difference.

[0157] In an embodiment, the groove STC is removed (see Fig. 11C ) may not be limited between the flat part PLA and the protrusion PR of the coating layer LMb. After the display panel DP and the coating layer LMb are transferred, the laser beam irradiation part LAE may irradiate the laser beam LAS to the coating layer LMb. The laser beam LAS may irradiate to the boundary of the flat part PLA and the protrusion PR. The flat part PLA and the protrusion PR may be separated from each other by the laser beam LAS.

[0158] According to an embodiment, an impact prevention layer PTL having an area larger than that of the display panel DP may be provided under the display panel DP. When the display panel DP and the impact prevention layer PTL are accommodated in a jig or a tray to be transferred, the impact prevention layer PTL may contact the inside of the jig or the tray earlier than the display panel DP. Therefore, the display panel DP may be prevented from contacting the inside of the jig or the tray and cracks may be prevented from occurring in the display panel DP.

[0159] According to an embodiment, the coating layer LMb may be disposed under the display panel DP. The coating layer LMb may include a flat part PLA and a plurality of protrusions PR. When viewed on a plane, the protrusions PR may be disposed on the outer side of the periphery of the display panel DP. Therefore, when the display panel DP and the coating layer LMb are accommodated in a jig or tray to be transferred, the protrusions PR may contact the inside of the jig or tray earlier than the display panel DP. Therefore, by preventing the display panel DP from contacting the inside of the jig or tray, cracks may be prevented from occurring in the display panel DP.

[0160] Although the present invention has been described above with reference to the embodiments, it is to be understood that those skilled in the art or those with ordinary knowledge in the art may make various modifications and changes to the present invention without departing from the spirit and technical scope of the present invention. In addition, it should be understood that the embodiments disclosed in this disclosure are not intended to limit the scope and / or technical spirit of the present invention. In addition, the embodiments or parts of the embodiments may be combined in whole or in part without departing from the scope of the present invention.

Claims

1. A display panel transfer method, wherein: The display panel transfer method comprises: providing a coating layer onto a rear surface of the display panel; and providing an impact prevention layer on the rear surface of the coating layer, Wherein, when viewed on a plane, an area of ​​the display panel is smaller than an area of ​​the impact-preventing layer, and wherein the area of ​​the display panel is larger than an area of ​​the coating layer.

2. The display panel transfer method according to claim 1, wherein: The impact prevention layer is defined by a cured protective resin, and wherein providing the impact prevention layer comprises: preparing a mold; providing a protective resin into the mold; providing the display panel and the coating layer onto the protective resin; curing the protective resin to produce the cured protective resin; and The mold is removed from the impact-preventing layer.

3. The display panel transfer method according to claim 2, wherein: The mold is optically clear.

4. The display panel transfer method according to claim 2, wherein: The protective resin includes an ultraviolet curable material.

5. The display panel transfer method according to claim 4, wherein: The protective resin includes an acrylic-based material or a urethane-based material.

6. The display panel transfer method according to claim 2, wherein: The curing of the protective resin comprises: a preliminary curing operation of curing the protective resin by irradiating the protective resin with a first ultraviolet ray; turning over the mold and the protective resin; and curing the protective resin by irradiating the rear surface of the mold with a second ultraviolet ray, The intensity of the second ultraviolet rays is higher than the intensity of the first ultraviolet rays.

7. The display panel transfer method according to claim 1, wherein: Providing the display panel and the coating layer includes: providing a metal frame defining an opening on the rear surface of the display panel; and providing a resin to the rear surface of the display panel through the opening, wherein the opening and the display panel overlap each other, and wherein, when viewed on a plane, an area of ​​the opening is smaller than the area of ​​the display panel.

8. The display panel transfer method according to claim 1, wherein: When viewed on a plane, the periphery of the impact-preventing layer is disposed on an outer side of the periphery of the display panel.

9. The display panel transfer method according to claim 8, wherein: The display panel transfer method further includes: The display panel, the coating layer, and the impact preventing layer are provided into a receiving groove defined in a tray or a jig.

10. The display panel transfer method according to claim 9, wherein: The periphery of the impact-preventing layer contacts the tray or the jig, and the periphery of the display panel is spaced apart from an interior of the tray or the jig.

11. The display panel transfer method according to claim 9, wherein: The display panel transfer method further includes: The impact preventing layer is removed from the coating layer.

12. The display panel transfer method according to claim 1, wherein: The coating layer comprises: a first substrate layer; and A plurality of first fillers are dispersed in the first matrix layer.

13. A display panel transfer method, wherein: The display panel transfer method comprises: preparing a display panel; and providing a coating layer on the rear surface of the display panel, Wherein, providing the coating layer comprises: providing a planar member, wherein the planar member extends along a first direction and a second direction intersecting the first direction; and providing a plurality of protrusions disposed adjacent to a periphery of the planar member, Wherein, when viewed on a plane, the area of ​​the flat component is smaller than the area of ​​the display panel.

14. The display panel transfer method according to claim 13, wherein: The flat member and the plurality of protrusions are formed simultaneously.

15. The display panel transfer method according to claim 14, wherein: The plurality of protrusions are provided on opposite sides of the planar member that are opposite to each other in the first direction and on opposite sides of the planar member that are opposite to each other in the second direction.

16. The display panel transfer method according to claim 13, wherein: A plurality of relief grooves are defined between the planar member and the protrusion.

17. The display panel transfer method according to claim 16, wherein: The display panel transfer method further includes: The flat member and the plurality of protrusions are separated along the removal groove.

18. The display panel transfer method according to claim 15, wherein: The display panel transfer method further includes: The flat member and the protrusions are separated by irradiating a boundary between the flat member and the plurality of protrusions with a laser beam.

19. The display panel transfer method according to claim 13, wherein: When viewed on a plane, portions of the plurality of protrusions are disposed on an outer side of a periphery of the display panel.

20. The display panel transfer method according to claim 19, wherein: When viewed on a plane, an outer periphery of the planar member is disposed on an inner side of the outer periphery of the display panel.

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