Display device

Abstract

A display device includes: a display panel; a window member disposed on the display panel; and an alignment mark layer disposed on a lower surface of the window member. The alignment mark layer includes: a light blocking layer disposed on the lower surface of the window member; and a pattern layer disposed on the light blocking layer. The pattern layer includes a through hole penetrating the pattern layer and exposing the light blocking layer.

Description

[0001] Cross - Reference to Related Applications

[0002] This application claims priority to Korean Patent Application No. 10-2023-0104145, filed with the Korean Intellectual Property Office on August 9, 2023, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] The present disclosure relates to a display device, and more particularly, to a display device capable of improving the recognition of alignment marks and a method of manufacturing the display device. Background Art

[0004] The current situation of contemporary electronic devices encompasses a wide range of multimedia platforms under development, including televisions, mobile phones, navigation systems, computer monitors, and gaming consoles. These electronic devices rely on display panels for image presentation. In particular, portable electronic devices such as mobile phones and tablet computers are being developed. In addition, there is a trend to develop display devices designed to work with these portable electronic devices. Summary of the Invention

[0005] Aspects of the present disclosure provide a display device and a method of manufacturing the display device capable of improving the recognition of alignment marks.

[0006] According to an embodiment of the present disclosure, a display device includes: a display panel; a window member disposed on the display panel; and an alignment mark layer disposed on a lower surface of the window member. The alignment mark layer includes: a light-blocking layer disposed on the lower surface of the window member; and a pattern layer disposed on the light-blocking layer. The pattern layer includes through-holes that penetrate the pattern layer and expose the light-blocking layer.

[0007] In an embodiment, the light-blocking layer includes a plurality of layers.

[0008] In an embodiment, the light-blocking layer includes: a first light-blocking layer disposed on the lower surface of the window member; and a second light-blocking layer disposed on the first light-blocking layer.

[0009] In an embodiment, a width of the second light-blocking layer is less than a width of the first light-blocking layer.

[0010] In an embodiment, a width of the pattern layer is less than the width of the second light-blocking layer.

[0011] In an embodiment, a color of the light-blocking layer and a color of the pattern layer are different from each other.

[0012] In an embodiment, the light-blocking layer has a black-based color, and the pattern layer has a white-based color.

[0013] In an embodiment, the alignment marks of the alignment mark layer include portions of the light-blocking layer exposed through the through-holes of the pattern layer.

[0014] In an embodiment, the alignment marks have one of a shape, a cross shape, a rectangular shape, a "T" shape, and an "L" shape.

[0015] In an embodiment, in a plan view, the through-holes form a closed curve shape.

[0016] In an embodiment, the alignment marks of the alignment mark layer include a first mark and a second mark provided on different layers, where the first mark includes a portion of the light-blocking layer exposed by the through-holes having the closed curve shape, and where the second mark includes a portion of the pattern layer surrounded and defined by the through-holes having the closed curve shape.

[0017] In an embodiment, each of the first mark and the second mark has one of a shape, a cross shape, a rectangular shape, a "T" shape, and an "L" shape.

[0018] In an embodiment, the light-blocking layer includes a carbon-based light-blocking material such as carbon black, a dye, a pigment, or a combination thereof.

[0019] In an embodiment, the pattern layer is formed of an ink including a carbon-based light-blocking material, a pigment, or a dye including a white color.

[0020] In an embodiment, the alignment mark layer further includes a cover layer provided on the pattern layer.

[0021] In an embodiment, the cover layer includes transparent SiO 2 .

[0022] In an embodiment, the window member includes: a main body portion on which the display panel is provided; and a flange portion provided at an edge of the main body portion.

[0023] In an embodiment, the alignment mark layer is provided on a lower surface of the flange portion.

[0024] According to an embodiment of the present disclosure, a method of manufacturing a display device includes: providing a first light-blocking layer on a lower surface of the window member; providing a second light-blocking layer on the first light-blocking layer; providing a pattern layer on the second light-blocking layer; and forming alignment marks by forming through-holes in the pattern layer to expose the second light-blocking layer.

[0025] In an embodiment, the first light-blocking layer and the second light-blocking layer each have a black color, and wherein, the pattern layer has a white color.

[0026] In an embodiment, the alignment mark includes a portion of the light-blocking layer exposed through the through hole of the pattern layer.

[0027] In an embodiment, in a plan view, the through hole may be formed in a closed curve shape.

[0028] In an embodiment, the alignment mark includes a first mark and a second mark disposed on different layers, wherein, the first mark includes a portion of the light-blocking layer exposed by the through hole having the closed curve shape, and wherein, the second mark includes a portion of the pattern layer surrounded and defined by the through hole having the closed curve shape.

[0029] In an embodiment, forming the through hole in the pattern layer is performed with a laser beam.

[0030] In an embodiment, the method further includes disposing a cover layer on the pattern layer.

[0031] In an embodiment, the method further includes aligning the window member and the display panel based on the alignment mark; and attaching the window member and the display panel.

[0032] According to an embodiment of the present disclosure, a method of manufacturing a display device includes: disposing a first light-blocking layer on a lower surface of a window member on a display panel; disposing a second light-blocking layer on the first light-blocking layer; disposing a pattern layer on the second light-blocking layer; forming an alignment mark by forming a through hole in the pattern layer to expose the second light-blocking layer; and applying a cover layer on the pattern layer.

[0033] In the display device and the method of manufacturing a display device according to the present disclosure, the recognition of the alignment mark can be improved.

[0034] In addition, since the pattern layer is patterned with a laser beam, the alignment mark can be miniaturized and become more precise.

[0035] The effects of the present disclosure are not limited to the above effects, and other effects not described herein will become apparent to those skilled in the art from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] By referring to the accompanying drawings and describing in detail the exemplary embodiments of the present disclosure, the above and other aspects and features of the present disclosure will become more apparent, in the drawings:

[0037] Figure 1Is a perspective view of a display device according to an embodiment;

[0038] Figure 2 Is Figure 1 A block diagram of a watch component of;

[0039] Figure 3 Is a plan view of a display device according to an embodiment;

[0040] Figure 4 Is along Figure 3 A cross-sectional view taken along line I-I';

[0041] Figure 5 Is Figure 4 A detailed view of part A of, and Figure 6 Is Figure 5 A plan view of as viewed from the direction of the first arrow;

[0042] Figure 7 Is along Figure 6 A cross-sectional view taken along line II-II';

[0043] Figure 8 Is a cross-sectional view of a display device according to an embodiment;

[0044] Figure 9 Is Figure 8 A plan view of as viewed from the direction of the second arrow;

[0045] Figure 10 Is a plan view of an alignment mark layer of a display device according to an embodiment;

[0046] Figure 11 Is a plan view of an alignment mark layer of a display device according to an embodiment;

[0047] Figure 12 Is a plan view of an alignment mark layer of a display device according to an embodiment;

[0048] Figure 13 Is a plan view of an alignment mark layer of a display device according to an embodiment;

[0049] Figure 14 Is a plan view of an alignment mark layer of a display device according to an embodiment;

[0050] Figure 15 Is a plan view of an alignment mark layer of a display device according to an embodiment;

[0051] Figure 16 Is a plan view of an alignment mark layer of a display device according to an embodiment;

[0052] Figure 17is a plan view of an alignment mark layer of a display device according to an embodiment;

[0053] Figure 18 is a plan view of an alignment mark layer of a display device according to an embodiment;

[0054] Figure 19 is a view showing a lower surface of a display device according to an embodiment; and

[0055] Figures 20 to 25 is a cross-sectional view of a process for describing a method of manufacturing an alignment mark layer of a display device according to an embodiment. DETAILED DESCRIPTION

[0056] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the present invention are shown. However, the present invention may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0057] It will also be understood that when a layer or substrate is referred to as being "on" another layer or substrate, the layer or substrate may be directly on the other layer or substrate, or an intervening layer or substrate may also be present. Throughout the specification, the same reference numerals denote the same components. In the drawings, the thicknesses of layers and regions are exaggerated for clarity.

[0058] Terms such as "first", "second", etc. may be used herein to describe various elements, but these elements should not be limited by these terms. These terms may be used to distinguish one element from another. Thus, without departing from the teachings of one or more embodiments, the first element discussed below may be referred to as the second element. Referring to an element as a "first" element does not require or imply the existence of a second element or other elements. The terms "first", "second", etc. may also be used herein to distinguish different categories or groups of elements. For brevity, the terms "first", "second", etc. may respectively denote "first category (or first group)", "second category (or second group)", etc.

[0059] Embodiments of the present disclosure may be partially or fully combined. As will be clearly understood by those skilled in the art, various interactions and operations are possible technically. The various embodiments may be practiced individually or in combination.

[0060] Hereinafter, exemplary embodiments will be described with reference to the accompanying drawings.

[0061] Figure 1 is a perspective view of a display device 1000 according to an embodiment.Figure 2 is Figure 1 a block diagram of a watch component 900. In the following, reference will be made to Figure 1 and Figure 2 to describe a display device 1000 according to an embodiment.

[0062] Referring to Figure 1 , the display device 1000 according to an embodiment may be a watch. Additionally, the display device according to an embodiment may be not only a watch, but also a device capable of displaying images, such as a mobile phone, a tablet computer, a monitor, a head-mounted display device, or a television.

[0063] The display device 1000 may be a watch as shown in Figure 1 . The display device 1000 may include a watch component 900 and a strap STR. The watch component 900 may display an image IM including predetermined information oriented in a first direction DR1. Herein, the first direction DR1 may be referred to as the vertical direction or the thickness direction. In some examples, the image IM may display an image representing an analog clock, such as clock hands showing the current time. In some examples, the image IM may display an icon of an application running in an application processor or an execution image of the application.

[0064] The watch component 900 may be attached to and detached from the strap STR. Depending on the design of the strap STR or other carrying mechanism, this allows the user to conveniently wear the display device 1000 on the wrist or possibly elsewhere. The user may wear the strap STR on his or her wrist to use the display device 1000 on the wrist (e.g., an electronic watch). The strap STR is not limited to the purpose of being worn on the user's wrist. The strap STR may be modified to be worn on the user's arm or around the neck, and may be replaced with a watch stand for mounting the watch component 900 to another electronic device.

[0065] As shown in Figure 2 , the watch component 900 may include a display module 200 and an electronic module 100. The display module 200 may include a display panel 400 and a touch module 450. In one embodiment, the touch module 450 may be optional. In some examples, the touch module 450 may be integrated into the display module 200 to provide interactive capabilities directly on the screen. In some examples, the touch module 450 may be replaced with a keypad or a similar input device for different user interface options.

[0066] The display module 200 may generate Figure 1The image IM shown in. The display module 200 may include an organic light-emitting display panel, a liquid crystal display panel, an electrophoretic display panel, etc. The touch module 450 may detect an external input. The external input applied to the touch module 450 may be recognized as a direct touch or a proximity sensing (such as hovering triggered by an external object like a user's finger or a stylus). This allows the device to interpret various forms of user interaction, accommodating both contact gestures and near-contact gestures. The type of the touch module 450 is not limited, and it may be a capacitive touch module, an acoustic wave touch module, or an optical touch module.

[0067] The electronic module 100 may include various functional modules for operating the watch component 900. The electronic module 100 may include at least one of a control module 10, a wireless communication module 20, an image input module 30, an audio input module 40, an audio output module 50, a memory 60, an external interface 70, a power module 80, and a camera module 90. These modules may be attached to a printed circuit substrate and electrically interconnected through a flexible circuit substrate.

[0068] The control module 10 may control the overall operation of the display device 1000 (see Figure 1 )), including managing data processing tasks. For example, the control module 10 may activate or deactivate the display module 200 and output input image data to the display module 200. The control module 10 activates or deactivates the touch module 450 and controls the display module 200, the image input module 30, the audio input module 40, the audio output module 50, etc. based on the touch signal received from the touch module 450.

[0069] The wireless communication module 20 may send wireless signals to other terminals and receive wireless signals from other terminals using a Bluetooth or Wi-Fi connection. The wireless communication module 20 may send and receive audio signals using a general communication connection. The wireless communication module 20 may include a transmitter 24 that modulates and sends the signal to be sent and a receiver 22 that demodulates the received signal.

[0070] The image input module 30 may process the input image data and convert the input image data into image data that can be displayed in the display module 200. The audio input module 40 may receive an external audio signal through a microphone in a recording mode or a voice recognition mode, etc., and convert the audio signal into electrical audio data. The audio output module 50 may convert the audio data received from the audio input module 40 or the audio data stored in the memory 60 and output the audio data to the outside.

[0071] The external interface 70 can be used as an interface for connecting to an external charger, a wired data port, or a wireless data port, or a card slot (e.g., a memory card slot, a subscriber identity module (SIM) / user identity module (UIM) card slot), etc. The power module 80 can supply power required for the overall operation of the watch component 900.

[0072] Figure 3 is a plan view of a display device according to an embodiment, and Figure 4 is a cross-sectional view taken along Figure 3 line I-I' of.

[0073] As Figure 3 and Figure 4 shown, a display device according to an embodiment may include a display panel 400, a window member 500, an anti-fingerprint film 600, and an alignment mark layer 700.

[0074] The display module 200 can display an image. For example, the display module 200 can display an image representing predetermined information oriented in a first direction DR1.

[0075] The window member 500 can be disposed on the display module 200. For example, the display module 200 can include a display panel 400 and a touch module 450 on the display panel 400, and the window member 500 can be disposed on the touch module 450. For example, the touch module 450 can be disposed between the display panel 400 and the window member 500. The window member 500 can be attached to the display module 200 through an adhesive member. For example, the window member 500 can be attached to the touch module 450 of the display module 200 through an adhesive member. The window member 500 can be made of a transparent material capable of transmitting an image from the display panel 400. For example, the window member 500 can include various materials ranging from a rigid material such as glass to a flexible material such as a transparent polymer.

[0076] The window member 500 can include a main body portion 510 and a flange portion 520. The main body portion 510 is provided as a central main body portion, and the flange portion 520 is provided as an adjacent flange portion. Both the main body portion 510 and the flange portion 520 can be integrally formed and manufactured as a single united structure to enhance durability and streamline the design.

[0077] The main body portion 510 of the window member 500 may have a circular shape in a plan view, but the present disclosure is not limited thereto.

[0078] The flange portion 520 of the window member 500 can be provided at the edge of the main body portion 510. For example, the flange portion 520 can be provided along the outer peripheral surface of the main body portion 510. The flange portion 520 can have an annular shape. The thickness of the flange portion 520 can be less than the thickness of the main body portion 510. Here, the thickness can refer to the dimension in the first direction DR1.

[0079] The anti-fingerprint film 600 can inhibit fingerprints from adhering to the surface of the window member 500, effectively minimizing residues from fingers or similar contacting objects. The anti-fingerprint film 600 can be provided on the upper surface of the window member 500. For example, the anti-fingerprint film 600 can be provided on the main body portion 510 of the window member 500. For example, the anti-fingerprint film 600 can be provided on the upper surface of the main body portion 510.

[0080] The alignment mark layer 700 can be a mark for alignment between the window member 500 and the display panel 400 to be attached to the window member 500. For example, the alignment mark layer 700 provides guidance for accurately positioning the window member 500 relative to the display panel 400 to which the window member 500 is to be attached. The alignment mark layer 700 can be provided at the edge of the window member 500. For example, the alignment mark layer 700 can be positioned along the periphery of the window member 500, specifically, on the lower side of its flange portion 520. For example, the alignment mark layer 700 can be provided on the lower surface of the flange portion 520 of the window member 500. In one embodiment, the alignment mark layer 700 can be provided on the lower surface of the flange portion 520 and along the flange portion 520.

[0081] Figure 5 is Figure 4 a detailed view of part A of Figure 6 is Figure 5 a plan view of Figure 7 viewed from the direction of the first arrow AR1, and Figure 6 is a cross-sectional view taken along line II-II' of

[0082] As Figure 5 shown, the alignment mark layer 700 can include a light-blocking layer 710 and a pattern layer 720.

[0083] The light-blocking layer 710 can be provided on the lower surface of the flange portion 520. The light-blocking layer 710 can include a light-blocking material. For example, the light-blocking layer 710 can include a carbon-based light-blocking material (including but not limited to carbon black) that effectively blocks light, various dyes, pigments, or a combination thereof. The light-blocking material can be dispersed in a binder polymer. For example, the light-blocking layer 710 can be formed using a black matrix composition well-known in the display field.

[0084] According to one embodiment, the light-blocking layer 710 may have a multi-layer structure. For example, the light-blocking layer 710 may include a first light-blocking layer 711 and a second light-blocking layer 712 that are sequentially stacked on the lower surface of the flange portion 520 in the reverse direction of the first direction DR1. Since the light-blocking layer 710 has a multi-layer structure, the cumulative thickness of the light-blocking layer 710 increases, thereby improving the light-blocking rate.

[0085] The first light-blocking layer 711 may be disposed on the lower surface of the flange portion 520. The first light-blocking layer 711 may include the above-described light-blocking material.

[0086] The second light-blocking layer 712 may be disposed on the first light-blocking layer 711. The second light-blocking layer 712 may include the above-described light-blocking material. The width of the second light-blocking layer 712 may be different from the width of the first light-blocking layer 711. For example, the width of the second light-blocking layer 712 may be smaller than the width of the first light-blocking layer 711. Here, the width may refer to the dimension in the second direction DR2. Additionally, the length of the second light-blocking layer 712 may be smaller than the length of the first light-blocking layer 711. Here, the length may refer to the dimension in the third direction DR3.

[0087] Meanwhile, the color of the first light-blocking layer 711 and the color of the second light-blocking layer 712 may be different. For example, the first light-blocking layer 711 may have a darker black color than the second light-blocking layer 712.

[0088] The pattern layer 720 may be disposed on the second light-blocking layer 712. The pattern layer 720 may include a material of a contrasting color (such as white) that contrasts with the color of the light-blocking layer 710 to be effectively distinguished from the light-blocking layer 710. For example, the pattern layer 720 may include a white carbon-based light-blocking material, pigment, dye, or a combination thereof. In one embodiment, the pattern layer 720 may be made of an ink containing a white carbon-based light-blocking material, pigment, or dye. Meanwhile, the width of the pattern layer 720 may be smaller than the width of the second light-blocking layer 712. Additionally, the length of the pattern layer 720 may be smaller than the length of the second light-blocking layer 712. Meanwhile, the pattern layer 720 may have, for example, a square shape, but is not limited thereto.

[0089] As Figure 6 and Figure 7 shown, the alignment mark layer 700 may define alignment marks 800.

[0090] The alignment marks 800 may include a first mark 810 and a second mark 820. The first mark 810 and the second mark 820 may be disposed on different layers.

[0091] The first mark 810 and the second mark 820 of the alignment marks 800 may be depicted (or defined) by through-holes 720a that penetrate the pattern layer 720, and the above reference Figure 6 andFigure 7 The detailed description is as follows.

[0092] As Figure 6 and Figure 7 shown in

[0093] and

[0094] simultaneously, in the plan view shown in Figure 6 the through hole 720a may have a closed curve shape. In the plan view, the second mark 820 may be depicted by being surrounded by the through hole 720a. For example, the second mark 820 may include the pattern layer 720 surrounded and depicted by the through hole 720a having a closed curve shape. At this time, the through hole 720a may define the contour of the second mark 820. For example, from the planar perspective shown in Figure 6 when the through hole 720a forms a shape of a closed curve, the second mark 820 surrounded by the through hole 720a may also have a shape of a closed curve. The second mark 820 may be formed in an embossed shape. For example, the second mark 820 may rise above the surrounding surface, creating a distinct tactile pattern necessary for accurate alignment and identification.

[0095] According to an embodiment, since the color of the second light-blocking layer 712 (e.g., black) and the color of the pattern layer 720 (e.g., white) have a high contrast, the recognition of the first mark 810 exposed through the through hole 720a can be improved. Additionally, for the same reason, the recognition of the second mark 820 (e.g., white-colored second mark 820) surrounded by the first mark 810 (e.g., black-colored first mark 810) can also be improved. Therefore, the recognition of the alignment mark 800 including the first mark 810 and the second mark 820 can be improved.

[0096] Figure 8 is a cross-sectional view of a display device according to an embodiment, and Figure 9 is Figure 8 a plan view observed from the direction of the second arrow AR2. Here, Figure 8It may be according to another embodiment Figure 4 A detailed view of part A of

[0097] Figure 8 and Figure 9 The display device of Figure 5 is different from the display device of the above

[0098] As Figure 8 and Figure 9 shown, the alignment mark layer 700 may include a cover layer 730. For example, the cover layer 730 may be disposed on the pattern layer 720 and the second light-blocking layer 712 to cover the pattern layer 720. In this example, at least a part of the cover layer 730 may be disposed within the through hole 720a of the pattern layer 720, and its details will be described in the subsequent part. The cover layer 730 may protect the alignment marks 800 of the pattern layer 720 and improve the adhesion between the pattern layer 720 and the light-blocking layer 710. The cover layer 730 may include a transparent material such that the alignment marks 800 of the pattern layer 720 can be observed. For example, the cover layer 730 may be made of transparent SiO 2 made.

[0099] Figure 10 is a plan view of the alignment mark layer 700 of a display device according to an embodiment.

[0100] Figure 10 The alignment mark layer 700 shown in Figure 5 is different from the alignment mark layer 700 of the above Figure 10 The differences include that the alignment mark layer 700 in

[0101] As Figure 10 shown, the first mark 810 and the second mark 820 of the alignment mark 800 may each have a cross shape.

[0102] Figure 11 is a plan view of the alignment mark layer 700 of a display device according to an embodiment.

[0103] Figure 11 The alignment mark layer 700 shown in Figure 5 is different from the alignment mark layer 700 of the above Figure 11 The differences include that the alignment mark layer 700 shown in

[0104] As Figure 11As shown in [reference], the first mark 810 and the second mark 820 of the alignment mark 800 may each have a rectangular shape.

[0105] Figure 12 is a plan view of an alignment mark layer 700 of a display device according to an embodiment.

[0106] Figure 12 The alignment mark layer 700 shown in [reference] is different from the alignment mark layer 700 described above Figure 5 in that the alignment marks 800 have different shapes. The specific differences and their meanings will be described in detail below.

[0107] As Figure 12 shown in [reference], the first mark 810 and the second mark 820 of the alignment mark 800 may each have a "T" shape.

[0108] Figure 13 is a plan view of an alignment mark layer 700 of a display device according to an embodiment.

[0109] Figure 13 The alignment mark layer 700 shown in [reference] is different from the alignment mark layer 700 described above Figure 5 in that the alignment marks 800 have different shapes. The specific differences and their meanings will be described in detail below.

[0110] As Figure 13 shown in [reference], the first mark 810 and the second mark 820 of the alignment mark 800 may each have an "L" shape.

[0111] Figure 14 is a plan view of an alignment mark layer 700 of a display device according to an embodiment.

[0112] Figure 14 The alignment mark layer 700 shown in [reference] is different from the alignment mark layer 700 described above Figure 5 in that the alignment marks 888 have different forms. The specific differences and their meanings will be described in detail below.

[0113] As Figure 14 shown in [reference], the alignment mark 888 may be depicted by a through hole 720b that penetrates the pattern layer 720. For example, as Figure 14 shown in [reference], a layer adjacent to the pattern layer 720 in the first direction DR1 (e.g., the second light-blocking layer 712) may be exposed through the through hole 720b of the pattern layer 720, and the portion of the second light-blocking layer 712 exposed through the through hole 720b may be the alignment mark 888. The alignment mark 888 may be formed in a scribed form.

[0114] Figure 14 The alignment mark 888 in [reference] may have Shape. For example, Figure 14 the alignment mark 888 can have the same shape as the second mark 820 described above. However, although Figure 9 the second mark 820 is formed in a relief form, Figure 9 the alignment mark 888 can be formed in a scribed form. Figure 14

[0115] According to Figure 14 , since the color of the second light-blocking layer 712 (e.g., black) and the color of the pattern layer 720 (e.g., white) have a high contrast, the visibility and recognition of the alignment mark 888 can be increased when exposed through the through-hole 720b.

[0116] Figure 15 is a plan view of the alignment mark layer 700 of a display device according to an embodiment.

[0117] Figure 15 The alignment mark layer 700 shown in Figure 14 differs from the alignment mark layer 700 described above in that it has alignment marks 888 with different shapes. The specific differences and their meanings are described in detail in the following description.

[0118] Figure 15 The alignment mark 888 in Figure 15 can have a cross shape. For example, Figure 10 the alignment mark 888 can have the same shape as the second mark 820 described above. However, although Figure 10 the second mark 820 is formed in a relief form, Figure 15 the alignment mark 888 can be formed in a scribed form.

[0119] Figure 16 is a plan view of the alignment mark layer 700 of a display device according to an embodiment.

[0120] Figure 16 The alignment mark layer 700 shown in Figure 14 differs from the alignment mark layer 700 described above in that it has alignment marks 888 with different shapes. The specific differences and their meanings are described in detail in the following description.

[0121] Figure 16 The alignment mark 888 in Figure 16 can have a rectangular shape. For example, Figure 11 the alignment mark 888 can have the same shape as the second mark 820 described above. However, although Figure 11 the second mark 820 is formed in a relief form, Figure 16The alignment marks 888 in [the figure] can be formed in a scribed form. For example, the alignment marks 888 can be carefully engraved or etched into the surface, representing an obvious recessed pattern that provides differentiation (such as tactile differentiation and visual differentiation).

[0122] Figure 17 is a plan view of an alignment mark layer 700 of a display device according to an embodiment.

[0123] Figure 17 The alignment mark layer 700 shown in [the figure] is different from the alignment mark layer 700 of the above Figure 14 in that it has alignment marks 888 with different shapes. The specific differences and their implications are described in detail in the following description.

[0124] Figure 17 The alignment marks 888 in [the figure] can have a "T" shape. For example, Figure 17 the alignment marks 888 of [the figure] can have the same shape as the second mark 820 of the above Figure 12 However, although Figure 12 the second mark 820 in [the figure] is formed in a relief form, Figure 17 the alignment marks 888 in [the figure] can be formed in a scribed form.

[0125] Figure 18 is a plan view of an alignment mark layer 700 of a display device according to an embodiment.

[0126] Figure 18 The alignment mark layer 700 shown in [the figure] is different from the alignment mark layer 700 of the above Figure 14 in that it has alignment marks 888 with different shapes. The specific differences and their implications are described in detail in the following description.

[0127] Figure 18 The alignment marks 888 in [the figure] can have an "L" shape. For example, Figure 18 the alignment marks 888 of [the figure] can have the same shape as the second mark 820 of the above Figure 13 However, although Figure 13 the second mark 820 in [the figure] is formed in a relief form, Figure 18 the alignment marks 888 in [the figure] can be formed in a scribed form.

[0128] Figure 19 is a view showing the lower surface of a display device according to an embodiment.

[0129] As Figure 19 shown in [the figure], the first light-blocking layer 711 can be disposed along the lower surface of the flange portion 520. For example, as Figure 19 shown in [the figure], the first light-blocking layer 711 can have a shape surrounding the display panel 400 (seeFigure 4 ) The annular shape. For example, the annular shape may be a continuous circular or annular pattern surrounding the display panel 400.

[0130] The second light-blocking layer 712 may be disposed on the first light-blocking layer 711 and along the first light-blocking layer 711. For example, the second light-blocking layer 712 may have an annular shape surrounding the display panel 400.

[0131] The pattern layer 720 may be disposed on the second light-blocking layer 712. For example, the pattern layer 720 may be disposed on the second light-blocking layer 712 in a square shape or a dot shape. For example, the square shape represents a pattern having four equal sides. For example, the dot shape represents a small, curved, or circular shape. In this example, a plurality of pattern layers 720 may be disposed on the second light-blocking layer 712. Figure 19 An example is shown in which four pattern layers 720 are respectively arranged on the upper side, lower side, left side, and right side of the display panel 400. For example, the four pattern layers 720 are respectively oriented in the third direction DR3, the opposite direction of the third direction DR3, the second direction DR2, and the opposite direction of the second direction DR2 based on the center of the display panel 400.

[0132] The plurality of pattern layers 720 may each have the above-described through hole 720a. The alignment mark 800 may be depicted by this through hole 720a.

[0133] According to some embodiments, Figure 19 the alignment mark 800 may be any one of the alignment marks 800 and 888 shown in the above Figure 6 and Figures 9 to 18 . Additionally, Figure 19 at least two of the plurality of alignment marks 800 may have different shapes. For example, Figure 19 at least two of the plurality of alignment marks 800 may include Figure 6 and Figures 9 to 18 at least two of the alignment marks 800 and 888 shown in the above

[0134] Figures 20 to 25 is a cross-sectional view of a process for describing a method of manufacturing an alignment mark layer 700 of a display device according to an embodiment.

[0135] First, as shown in Figure 20 , the initial step involves the preparation of the first light-blocking layer 711. This layer is then positioned on the lower surface of the window member 500 (see Figure 4 ), in this case, the lower surface of the window member 500 corresponds to the lower side of the flange portion 520 (see Figure 4 ).

[0136] Thereafter, as shown in Figure 21As shown in the figure, the second light-blocking layer 712 may be disposed on the first light-blocking layer 711.

[0137] Next, as Figure 22 shown in the figure, the pattern layer 720 may be disposed on the second light-blocking layer 712.

[0138] Subsequently, as Figure 23 shown in the figure, a processing process that can be referred to as a patterning process is performed using a laser irradiation device. Specifically, the laser beam emitted from the laser irradiation device is directed at the pattern layer 720 in the first direction DR1, allowing the laser beam (which may be referred to as the laser beam LB) to pass through the pattern layer 720 and create through-holes 720a within the pattern layer 720.

[0139] Then, as Figure 24 shown in the figure, an alignment mark 800 including a first mark 810 exposed through the through-hole 720a and a second mark 820 surrounded and delineated by the first mark 810 of the through-hole 720a may be formed. For example, an alignment mark 800 as Figure 9 shown in the figure may be formed. In this process, according to some embodiments, for example, an alignment mark 888 delineated by a through-hole 720b as shown in the above Figure 14 figure may be formed by the irradiation of the laser beam LB.

[0140] Through this process, the pattern layer 720 undergoes precise patterning via the laser beam LB, allowing for the miniaturization of the alignment mark 800. By adjusting the intensity and scale of the laser beam LB, embodiments of the present disclosure enable the creation of small alignment marks. Additionally, since the pattern layer 720 is patterned by the laser beam LB, the shape of the alignment mark 800 can be precisely fabricated, and the position of the alignment mark 800 can be precisely controlled.

[0141] According to some embodiments, as Figure 4 shown in the figure, the window member 500 and the display panel 400 may be aligned based on the alignment mark 800 of the alignment mark layer 700.

[0142] Thereafter, the window member 500 may be attached to the display panel 400. For example, the lower surface of the main body portion 510 included in the window member 500 may be attached to the display panel 400.

[0143] In some examples, between the forming process and the alignment process (e.g., the alignment process between the window member 500 and the display panel 400), as Figure 25 shown in the figure, a cover layer 730 may also be disposed on the pattern layer 720 having the through-hole 720a. In some examples, the cover layer 730 may be disposed on the second light-blocking layer 712. In some examples, at least a portion of the cover layer 730 may also be disposed within the through-hole 720a of the pattern layer 720.

[0144] Those of ordinary skill in the art to which the present disclosure pertains will be able to understand that the present disclosure can be implemented in other specific forms without changing the technical spirit or essential features of the present disclosure. Therefore, it will be understood that the above exemplary embodiments are illustrative rather than restrictive in all respects. It will be understood that the scope of the present disclosure is defined by the claims rather than the above detailed description, and all modifications and variations derived from the claims and their equivalents fall within the scope of the present disclosure.

Claims

1. A display device, characterized in that: The display device comprises: Display panel; a window member, disposed on the display panel; and an alignment mark layer disposed on the lower surface of the window member, Wherein, the alignment mark layer comprises: a light blocking layer disposed on the lower surface of the window member; and A pattern layer is disposed on the light-blocking layer, wherein the pattern layer includes a through hole penetrating the pattern layer and exposing the light-blocking layer.

2. The display device according to claim 1, It is characterized in that The light blocking layer includes a plurality of layers.

3. The display device according to claim 1, It is characterized in that The light blocking layer comprises: A first light blocking layer disposed on the lower surface of the window member; and The second light-blocking layer is disposed on the first light-blocking layer.

4. The display device according to claim 3, It is characterized in that The width of the second light-blocking layer is smaller than the width of the first light-blocking layer.

5. The display device according to claim 4, It is characterized in that The width of the pattern layer is smaller than the width of the second light blocking layer.

6. The display device according to claim 1, It is characterized in that The color of the light blocking layer and the color of the pattern layer are different from each other.

7. The display device according to claim 1, It is characterized in that The alignment mark of the alignment mark layer includes a portion of the light blocking layer exposed by the through hole of the pattern layer.

8. The display device according to claim 1, It is characterized in that In a plan view, the through hole forms a closed curve shape.

9. The display device according to claim 8, It is characterized in that The alignment mark of the alignment mark layer includes a first mark and a second mark, wherein the first mark and the second mark are arranged on different layers. wherein the first mark includes a portion of the light blocking layer exposed by the through hole having the closed curve shape, and The second mark includes a portion of the pattern layer surrounded and defined by the through hole having the closed curve shape.

10. The display device according to claim 1, It is characterized in that The alignment mark layer further includes a covering layer disposed on the pattern layer.

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