Display device and method of manufacturing same

Abstract

Provided are a display device and a method of manufacturing the display device in which the possibility of a defect occurring in a manufacturing process thereof can be reduced. A display device may include a display panel including a display element, an optical functional layer disposed on the display panel, and a light control layer disposed on the optical functional layer, where the light control layer may include a plurality of grooves that may be disposed adjacent to a plurality of vertices of the light control layer, respectively, in a plan view, a plurality of sides of the light control layer respectively overlap with a plurality of sides of the optical functional layer in plan view, and a plurality of vertices of the light control layer respectively overlap with a plurality of vertices of the optical functional layer in plan view.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority from Korean Patent Application No. 10-2024-0015185 filed on January 31, 2024, in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0003] One or more embodiments relate to a display device and a method of manufacturing the display device in which the possibility of defects occurring in a process of manufacturing the display device can be reduced. Background Art

[0004] The cover window of a display device can protect the display elements of the display panel included in the display device from external impact and block light so that the wiring or circuit of the display panel is not visible from the outside. The cover window can be attached to the display panel using an adhesive layer. Specifically, after the adhesive layer forming material applied to the display panel is pre-cured, the cover window can be pressurized. Therefore, the cover window can be attached to the display panel by mainly curing the pre-cured adhesive layer forming material. Summary of the Invention

[0005] However, in the related art display device and the method of manufacturing the display device, the pre-cured adhesive layer forming material overflows during the process of pressurizing the cover window.

[0006] One or more embodiments include a display device and a method of manufacturing a display device in which the possibility of defects occurring in a process of manufacturing the display device can be reduced. However, these objects are merely exemplary, and the scope of the present disclosure is not limited thereto.

[0007] Additional aspects will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the presented embodiments of the disclosure.

[0008] According to one or more embodiments, a display device may include a display panel including a display element, an optical functional layer arranged on the display panel, and a light control layer arranged on the optical functional layer, wherein the light control layer may include a plurality of grooves, the plurality of grooves may be arranged to be adjacent to a plurality of vertices of the light control layer in a plan view, the plurality of sides of the light control layer may overlap with the plurality of sides of the optical functional layer in a plan view, and the plurality of vertices of the light control layer may overlap with the plurality of vertices of the optical functional layer in a plan view.

[0009] Multiple sides of the light management layer may respectively coincide with multiple sides of the optical function layer in a plan view, and multiple vertices of the light management layer may respectively coincide with multiple vertices of the optical function layer in a plan view.

[0010] The optical functional layer may include a 1-1 side, a 1-2 side, a 1-3 side, and a 1-4 side, the 1-1 side and the 1-2 side may face each other, and the 1-3 side and the 1-4 side may face each other and may be positioned between the 1-1 side and the 1-2 side, the light control layer may include a 2-1 side, a 2-2 side, a 2-3 side, and a 2-4 side, the 2-1 side and the 2-2 side may face each other, and the 2-3 side and the 2-4 side may face each other and may be positioned between the 2-1 side and the 2-2 side, the 2-1 side may coincide with the 1-1 side in a plan view, the 2-2 side may coincide with the 1-2 side in a plan view, the 2-3 side may coincide with the 1-3 side in a plan view, and the 2-4 side may coincide with the 1-4 side in a plan view.

[0011] The optical functional layer may include a 1-1 vertex provided by the contact between the 1-1 side and the 1-3 side, a 1-2 vertex provided by the contact between the 1-1 side and the 1-4 side, a 1-3 vertex provided by the contact between the 1-2 side and the 1-3 side, and a 1-4 vertex provided by the contact between the 1-2 side and the 1-4 side, and the light control layer may include a 2-1 vertex provided by the contact between the 2-1 side and the 2-3 side, a 2-2 vertex provided by the contact between the 2-1 side and the 2-4 side. The 2-2 vertex is provided by the contact between the 2-2 side and the 2-3 side, the 2-3 vertex is provided by the contact between the 2-2 side and the 2-3 side, and the 2-4 vertex is provided by the contact between the 2-2 side and the 2-4 side, the 2-1 vertex may coincide with the 1-1 vertex in a plan view, the 2-2 vertex may coincide with the 1-2 vertex in a plan view, the 2-3 vertex may coincide with the 1-3 vertex in a plan view, and the 2-4 vertex may coincide with the 1-4 vertex in a plan view.

[0012] The light-control layer may further include a plurality of grooves, and the plurality of grooves may each be arranged between some of the plurality of grooves in a plan view.

[0013] Each of the plurality of grooves may extend along one of the sides of the light management layer.

[0014] The display device may further include a control dam disposed in each of the plurality of grooves.

[0015] The control dam and the light control layer may be integral with each other.

[0016] The display device may further include a cover window disposed on the display panel and an adhesive layer disposed between the light control layer and the cover window.

[0017] The light management layer may further include a plurality of grooves, each of the plurality of grooves may be arranged between some of the plurality of recesses in a plan view, and the adhesive layer may fill the plurality of grooves (eg, the adhesive layer may fill in the plurality of grooves).

[0018] The optical functional layer may include a polarizing film.

[0019] According to one or more embodiments, a method for manufacturing a display device may include: attaching an optical functional layer to a display panel; attaching a light control layer to the optical functional layer; forming a preliminary adhesive layer by applying an adhesive layer forming material to the light control layer and irradiating the adhesive layer forming material with ultraviolet rays; arranging a cover window on the preliminary adhesive layer and pressurizing the cover window; and forming an adhesive layer by irradiating ultraviolet rays to the preliminary adhesive layer, wherein the light control layer may include a plurality of grooves, and in a plan view, the plurality of grooves may be arranged to be respectively adjacent to a plurality of vertices of the light control layer, and attaching the light control layer may include attaching the light control layer to the optical functional layer by using the plurality of grooves so that in a plan view, multiple sides of the light control layer respectively overlap with multiple sides of the optical functional layer and multiple vertices of the light control layer respectively overlap with multiple vertices of the optical functional layer.

[0020] Attaching the light management layer may include attaching the light management layer to the optical function layer by using a plurality of grooves so that sides of the light management layer respectively coincide with sides of the optical function layer and vertices of the light management layer respectively coincide with vertices of the optical function layer in a plan view.

[0021] The optical functional layer may include a 1-1 side, a 1-2 side, a 1-3 side, and a 1-4 side, the 1-1 side and the 1-2 side may face each other, and the 1-3 side and the 1-4 side may face each other and may be positioned between the 1-1 side and the 1-2 side, the light control layer may include a 2-1 side, a 2-2 side, a 2-3 side, and a 2-4 side, the 2-1 side and the 2-2 side may face each other, and the 2-3 side and the 2-4 side may face each other and may be positioned between the 2-1 side and the 2-2 side, and the attachment of the light control layer may include attaching the light control layer to the optical functional layer by using a plurality of grooves so that the 2-1 side coincides with the 1-1 side in a plan view, the 2-2 side coincides with the 1-2 side in a plan view, the 2-3 side coincides with the 1-3 side in a plan view, and the 2-4 side coincides with the 1-4 side in a plan view.

[0022] The optical functional layer may include a 1-1 vertex provided by the contact between the 1-1 side and the 1-3 side, a 1-2 vertex provided by the contact between the 1-1 side and the 1-4 side, a 1-3 vertex provided by the contact between the 1-2 side and the 1-3 side, and a 1-4 vertex provided by the contact between the 1-2 side and the 1-4 side, and the light control layer may include a 2-1 vertex provided by the contact between the 2-1 side and the 2-3 side, a 2-2 vertex provided by the contact between the 2-1 side and the 2-4 side, The optical control layer may include attaching the optical control layer to the optical functional layer by using a plurality of grooves so that the 2-1 vertex coincides with the 1-1 vertex in a plan view, the 2-2 vertex coincides with the 1-2 vertex in a plan view, the 2-3 vertex coincides with the 1-3 vertex in a plan view, and the 2-4 vertex coincides with the 1-4 vertex in a plan view.

[0023] The light-controlling layer may further include a plurality of grooves, each of the plurality of grooves may be arranged between some of the plurality of recesses in a plan view, and forming the preliminary adhesive layer may include filling an adhesive layer-forming material in the plurality of grooves.

[0024] Each of the plurality of grooves may extend along one of the sides of the light management layer.

[0025] The control dam may be disposed in each of the plurality of grooves, and forming the preliminary adhesive layer may include filling an adhesive layer forming material in the plurality of grooves.

[0026] The control dam and the light control layer may be integral with each other.

[0027] The optical functional layer may include a polarizing film.

[0028]

[0011] Further aspects, features, and advantages in addition to those described above will now become apparent from the following drawings, claims, and detailed description of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and other aspects, features and advantages of certain embodiments of the present disclosure will be more apparent from the following description taken in conjunction with the accompanying drawings, in which:

[0030] Figure 1 is a schematic plan view of a display device according to an embodiment;

[0031] Figure 2 is a schematic cross-sectional view of a display device according to an embodiment;

[0032] Figure 3is a schematic plan view of a display panel of a display device according to an embodiment;

[0033] Figure 4 yes Figure 3 A schematic diagram of an equivalent circuit of a pixel included in a display panel;

[0034] Figure 5 It is intercepted along line III-III', Figure 3 A schematic cross-sectional view of a display panel;

[0035] Figure 6 is a schematic plan view of an optical function layer of a display device according to an embodiment;

[0036] Figure 7 is a schematic plan view of a light control layer of a display device according to an embodiment;

[0037] Figure 8 It is intercepted along line I-I', Figure 1 A schematic cross-sectional view of a display device;

[0038] Figure 9 It is intercepted along line II-II', Figure 1 A schematic cross-sectional view of a display device;

[0039] Figures 10 to 14 is a schematic diagram for describing a process of manufacturing a display device according to an embodiment;

[0040] Figure 15 is a schematic cross-sectional view of a portion of a display device manufactured according to a comparative example;

[0041] Figure 16 is a schematic plan view of a light control layer of a display device according to an embodiment;

[0042] Figure 17 It is intercepted along line VI-VI', Figure 16 A schematic cross-sectional view of a display device;

[0043] Figure 18 It is intercepted along line VII-VII', Figure 16 A schematic cross-sectional view of a display device;

[0044] Figures 19 to 21 is used to describe Figure 16 A schematic diagram of the cross-sectional shape of the groove;

[0045] Figure 22 yes Figure 16 A schematic enlarged plan view of a portion A of a light control layer;

[0046] Figure 23is used to describe Figure 22 Schematic diagram of the cross-sectional shape of the groove and control dam; and

[0047] Figures 24 to 27 is a schematic diagram for describing a process of manufacturing a display device according to an embodiment. DETAILED DESCRIPTION

[0048] In the following description, for the purpose of explanation, many specific details are set forth in order to provide a thorough understanding of the various embodiments or implementations of the present disclosure. As used herein, "embodiment" and "implementation" are interchangeable words, which are non-limiting examples of the devices or methods disclosed herein. However, it is apparent that the various embodiments can be practiced without these specific details or in the presence of one or more equivalent arrangements. Here, the various embodiments do not have to be exclusive, nor do they have to limit the present disclosure. For example, the specific shape, configuration, and characteristics of an embodiment can be used or implemented in another embodiment.

[0049] Unless otherwise specified, the embodiments shown should be understood to provide features of the present disclosure. Therefore, unless otherwise specified, the features, components, modules, layers, films, panels, regions and / or aspects of the various embodiments (hereinafter individually or collectively referred to as "elements") may be combined, separated, interchanged and / or rearranged in other ways without departing from the concept of the present invention.

[0050] The use of cross hatching and / or shading in the accompanying drawings is generally provided to clarify the boundaries between adjacent elements. Thus, unless otherwise specified, the presence or absence of cross hatching or shading does not convey or indicate any preference or requirement for a particular material, material properties, size, ratio, commonality between the elements shown and / or any other characteristics, attributes, properties, etc. of the elements. In addition, in the accompanying drawings, the size and relative size of the elements may be exaggerated for clarity and / or descriptive purposes. When the embodiment can be implemented differently, the specific process sequence can be performed differently from the described sequence. For example, two processes described in succession can be performed substantially simultaneously or in an order opposite to the described sequence. Moreover, similar reference numerals and / or reference symbols represent similar elements.

[0051] When an element, such as a layer, is referred to as being "on," "connected to," or "coupled to" another element or layer, it may be directly on, directly connected to, or directly coupled to the other element or layer, or there may be intervening elements or layers. However, when an element or layer is referred to as being "directly" on, "directly connected to," or "directly coupled to" another element or layer, there may be no intervening elements or layers. For this purpose, the term "connected" may refer to a physical, electrical, and / or fluidic connection with or without intervening elements. In addition, the x-axis, y-axis, and z-axis are not limited to the three axes of a rectangular coordinate system and may be interpreted in a broader sense. For example, the x-axis, y-axis, and z-axis may be perpendicular to each other, or may be in different directions that are not perpendicular to each other. In addition, the x-axis direction may refer to the +x direction and / or the -x direction, the y-axis direction may refer to the +y direction and / or the -y direction, and the z-axis direction may refer to the +z direction and / or the -z direction.

[0052] For the purposes of this disclosure, "at least one of A and B" may be interpreted as only A, only B, or any combination of A and B. Moreover, "at least one of X, Y, and Z" and "at least one selected from the group consisting of X, Y, and Z" may be interpreted as only X, only Y, only Z, or any combination of two or more of X, Y, and Z. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0053] Although the terms "first," "second," etc., may be used herein to describe various types of elements, these elements should not be limited by these terms. These terms are used to distinguish one element from another. Therefore, the first element discussed below can be referred to as the second element without departing from the teachings of the present disclosure.

[0054] Spatially relative terms (such as "beneath," "below," "under," "lower," "above," "upper," "over," "higher," "side" (e.g., as in "sidewall"), and the like) may be used herein for descriptive purposes and thereby describe the relationship of one element to another element as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the drawings is turned over, an element described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the term "below" is capable of encompassing both above and below orientations. Furthermore, the device may be oriented in other ways (e.g., rotated 90 degrees or at other orientations), and thus, the spatially relative descriptors used herein are to be interpreted accordingly.

[0055] The terms used herein are for the purpose of describing particular embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a," "an," and "the," as used herein, are intended to include the plural forms as well. In addition, when the terms "comprises," "comprising," "includes," and / or "including," when used in this specification, specify the presence of the stated features, integers, steps, operations, elements, parts, and / or clusters thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, and / or clusters thereof. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as terms of approximation and not as terms of degree, and, as such, are utilized to take into account the inherent deviations in measured, calculated, and / or provided values that one of ordinary skill in the art would recognize.

[0056] Various embodiments are described herein with reference to cross-sectional and / or exploded views that are schematic illustrations of embodiments and / or intermediate structures. Thus, variations from the shapes of the illustrations due to, for example, manufacturing techniques and / or tolerances are to be expected. Thus, the embodiments disclosed herein should not necessarily be construed as limited to the shapes of the particular illustrated regions, but rather include deviations in shape due to, for example, manufacturing. In this manner, the regions illustrated in the figures may be schematic in nature, and the shapes of these regions may not reflect the actual shapes of regions of a device, and thus, are not necessarily intended to be limiting.

[0057] As is customary in the art, some embodiments are described and shown in the accompanying drawings in terms of functional blocks, parts and / or modules. It will be appreciated by those skilled in the art that these blocks, parts and / or modules are physically implemented by electronic (or optical) circuits (such as logic circuits, discrete components, microprocessors, hard-wired circuits, memory elements, wiring connectors and the like that can be formed using semiconductor-based manufacturing techniques or other manufacturing techniques). In the case of blocks, parts and / or modules implemented by microprocessors or other similar hardware, they can be programmed and controlled using software (e.g., microcode) that performs the various functions discussed herein, and can be selectively driven by firmware and / or software. It is also contemplated that each block, part and / or module can be implemented by dedicated hardware, or implemented as a combination of dedicated hardware that performs some functions and a processor that performs other functions (e.g., one or more programmed microprocessors and associated circuits). Moreover, without departing from the scope of the present invention, each block, part and / or module of some embodiments can be physically separated into two or more interactive and discrete blocks, parts and / or modules. Furthermore, the blocks, parts and / or modules of some embodiments may be physically combined into more complex blocks, parts and / or modules without departing from the scope of the inventive concept.

[0058] Unless otherwise defined or implied herein, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure belongs. It will also be understood that, unless expressly defined as such herein, terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and this disclosure, and should not be interpreted in an idealized or overly formal sense.

[0059] Figure 1 1 is a schematic plan view of a display device 1 according to an embodiment. The display device 1 may be implemented as various types of electronic devices. In an embodiment, the display device 1 may be a display device for a vehicle, but the display device 1 of the present disclosure is not limited thereto.

[0060] like Figure 1 As shown in FIG, the display device 1 may include a display area DA and a peripheral area PA surrounding the display area DA. The display device 1 may provide an image through an array of a plurality of pixels that may be two-dimensionally arranged in the display area DA.

[0061] Each pixel of the display device 1 may be an area capable of emitting light of a certain color, and the display device 1 may provide an image by using the light emitted by the pixel. For example, each pixel may emit red light, green light, or blue light.

[0062] like Figure 1 As shown in , the display area DA may have a polygonal shape including a quadrilateral shape. For example, the display area DA may have a rectangular shape in which the horizontal length may be greater than the vertical length, a rectangular shape in which the horizontal length may be less than the vertical length, or a square shape. As another example, the display area DA may have various shapes such as an elliptical shape or a circular shape.

[0063] The peripheral area PA may be a non-display area that does not provide an image and may completely surround the display area DA. A driving circuit for providing an electrical signal to a display element corresponding to a pixel or a power line for providing power to the display element corresponding to the pixel may be arranged in the peripheral area PA.

[0064] Hereinafter, an organic light-emitting display device may be described as an example of a display device 1 according to an embodiment. However, the display device 1 in the present disclosure is not limited thereto. In an embodiment, the display device 1 of the present disclosure may be a display device such as an inorganic light-emitting display device or an inorganic electroluminescent (EL) display device, or a quantum dot light-emitting display device. For example, the emission layer of the display element included in the display device 1 may include an organic material or an inorganic material. The display device 1 may also include an emission layer and quantum dots positioned on a path of light emitted by the emission layer. In an embodiment, the display device 1 of the present disclosure may be a liquid crystal display device.

[0065] Figure 2 1 is a schematic cross-sectional view of a display device 1 according to an embodiment. Figure 2 As shown in FIG, the display device 1 may include a display panel 10, an optical function layer 20, a light control layer 30, a cover window 40, and an adhesive layer 40a. Figure 2 The display device 1 may further include various components in addition to the configuration shown in FIG.

[0066] The display panel 10 may be disposed below the cover window 40. The display panel 10 may display an image. For example, the image provided by the display device 1 may be realized by the display panel 10. The display panel 10 may include multiple display elements, and each of the display elements may emit red light, green light, or blue light. Therefore, the display panel 10 may display an image using the light emitted by the display elements. The image displayed by the display panel 10 may be provided to the user through the cover window 40, which may be transparent.

[0067] The cover window 40 may be provided above the upper surface of the display panel 10 (in the +z direction). Here, the "upper surface" of the display panel 10 may be defined as a surface facing the direction in which the display panel 10 provides an image. According to an embodiment, the cover window 40 may be arranged to cover the upper surface of the display panel 10. The cover window 40 may protect the upper surface of the display panel 10. The cover window 40 forms the appearance of the display device 1, and the cover window 40 may include a substantially flat surface and a curved surface corresponding to the shape of the display device 1. The cover window 40 may have a high transmittance to transmit light emitted from the display panel 10, and may have a thin thickness to reduce the weight of the display device 1. The cover window 40 may have strong strength and hardness to protect the display panel 10 from external impacts.

[0068] The optical functional layer 20 may be arranged between the display panel 10 and the cover window 40. Specifically, the optical functional layer 20 may be provided above the display panel 10. The optical functional layer 20 may reduce the reflectivity of light (e.g., external light) incident from the outside toward the display panel 10. Therefore, the optical functional layer 20 may improve the color purity of the light emitted from the display panel 10. The optical functional layer 20 may include a polarizing film including a retarder and a polarizer. The retarder may include a λ / 2 retarder and / or a λ / 4 retarder. Although not shown in the drawings, an adhesive member may be between the optical functional layer 20 and the display panel 10. The adhesive member may include at least one of an optically clear resin (OCR), an optically clear adhesive (OCA), and a pressure-sensitive adhesive (PSA). The adhesive member may couple the optical functional layer 20 and the display panel 10 to each other.

[0069] The light control layer 30 may be between the optical functional layer 20 and the cover window 40. Specifically, the light control layer 30 may be disposed on the optical functional layer 20. Light emitted toward the upper side or lower side at a certain angle or greater in a direction perpendicular to the cover window 40 may be blocked by a viewing angle control pattern (not shown) of the light control layer 30. Specifically, in the case where the display device 1 is a display device for a vehicle, the light control layer 30 may be a light control film that blocks light emitted from the display device 1 toward the front glass of the vehicle (e.g., a windshield). The light control layer 30 can enhance the safety of the driver by blocking light emitted from the display device 1 toward the front glass of the vehicle (e.g., a windshield). Although not shown in the drawings, an adhesive member may be between the light control layer 30 and the optical functional layer 20. The adhesive member may include at least one of OCR, OCA, and PSA. The adhesive member may connect the light control layer 30 and the optical functional layer 20 to each other.

[0070] The adhesive layer 40a may be between the light control layer 30 and the cover window 40. Specifically, the adhesive layer 40a may be disposed on the light control layer 30. The adhesive layer 40a may attach the cover window 40 to the display panel 10. Specifically, the adhesive layer 40a may attach the cover window 40 to the display panel 10 by attaching the cover window 40 to the light control layer 30. For example, the cover window 40 may be attached to the display panel 10 using the adhesive layer 40a. The adhesive layer 40a may include at least one of an optical fiber (OCR), an optical fiber (OCA), and a photosensitive adhesive (PSA). The adhesive layer 40a may be an OCR.

[0071] Figure 3 The display device 1 according to the embodiment (for example, see Figure 2 ) is a schematic plan view of a display panel 10.

[0072] like Figure 3 As shown in FIG, the display panel 10 may include a panel display area 10DA and a panel peripheral area 10PA. As described above, further reference is made to Figure 1 and Figure 2 Since the display device 1 includes the display panel 10 , the panel display area 10DA of the display panel 10 may correspond to the display area DA of the display device 1 , and the panel peripheral area 10PA of the display panel 10 may correspond to the peripheral area PA of the display device 1 .

[0073] Therefore, the panel display area 10DA of the display panel 10 may have a shape corresponding to the display area DA of the display device 1, and the panel peripheral area 10PA of the display panel 10 may have a shape corresponding to the peripheral area PA of the display device 1. Specifically, the panel peripheral area 10PA of the display panel 10 may have a shape corresponding to at least a portion of the peripheral area PA of the display device 1. For example, the panel display area 10DA may have a rectangular shape in which the horizontal length may be smaller than the vertical length, a rectangular shape in which the horizontal length may be larger than the vertical length, or a square shape. As another example, the panel display area 10DA may have various shapes such as an elliptical shape or a circular shape. The panel peripheral area 10PA may surround the panel display area 10DA.

[0074] As described above, the display panel 10 can display an image. The panel display area 10DA of the display panel 10 may be an area for displaying the image, and pixels PX may be arranged in the panel display area 10DA. A pixel PX may be the smallest unit for realizing an image and refers to an emission area. A plurality of pixels PX may be provided, and each of the pixels PX may emit red light, green light, or blue light using a display element.

[0075] The panel peripheral area 10PA may be arranged outside the panel display area 10DA. Specifically, the panel peripheral area 10PA may surround the panel display area 10DA. Pixels PX may not be arranged in the panel peripheral area 10PA. For example, the panel peripheral area 10PA may be a non-display area that does not display an image. Lines and / or driver circuits for supplying electrical signals to display elements corresponding to the pixels PX, or power lines for supplying power to the display elements corresponding to the pixels PX, may be arranged in the panel peripheral area 10PA.

[0076] Figure 4 yes Figure 3 Schematic diagram of an equivalent circuit of a pixel included in the display panel 10. The pixel circuit PC may be electrically connected to a display element, and the display element may correspond to a pixel. The organic light emitting diode OLED may be shown as Figure 4 In an embodiment, the display element may emit red light, green light, or blue light.

[0077] The pixel circuit PC may include a first transistor T1, a second transistor T2, and a storage capacitor Cst. The second transistor T2 may be a switching transistor that may be electrically connected to a scan line SL and a data line DL, and may be configured to provide a data signal input from the data line DL to the first transistor T1 when turned on by a switching signal input from the scan line SL. The storage capacitor Cst may have one end electrically connected to the second transistor T2 and the other end electrically connected to the driving voltage line PL, and may store a voltage corresponding to a difference between a voltage received from the second transistor T2 and a driving power voltage (e.g., a driving voltage ELVDD) supplied to the driving voltage line PL.

[0078] The first transistor T1 may be a driving transistor that may be electrically connected to the driving voltage line PL to receive the driving voltage ELVDD and electrically connected to the storage capacitor Cst. The first transistor T1 may control the driving current flowing from the driving voltage line PL to the organic light emitting diode OLED according to the voltage value stored in the storage capacitor Cst. The organic light emitting diode OLED may emit light having a certain brightness according to the driving current. The opposite electrode of the organic light emitting diode OLED may receive the electrode power voltage ELVSS.

[0079] Figure 4 The pixel circuit PC is shown to include two transistors and a storage capacitor, but the present disclosure is not limited thereto. For example, the number of transistors or the number of storage capacitors may be variously changed according to the design of the pixel circuit PC. Figure 4 Although all of the transistors are shown as P-type transistors, the present disclosure is not limited thereto. For example, some of the transistors may be N-type transistors. As another example, all of the transistors may be N-type transistors.

[0080] Figure 5 It is intercepted along line III-III', Figure 3 As known to those skilled in the art, except for Figure 5 In addition to the configuration shown in FIG, the display panel 10 may further include various components.

[0081] Reference Figure 5 The display panel 10 may include a substrate 100, transistors, and display elements, wherein the transistors and display elements may be formed of various layers formed on the substrate 100. Specifically, the display panel 10 may include a substrate 100, a pixel circuit layer 200, a display element layer 300, and an encapsulation layer 400.

[0082] The substrate 100 may include glass, metal, or a polymer resin. The substrate 100 may be flexible or bendable. The substrate 100 may include a polymer resin such as polyethersulfone, polyacrylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyarylate, polyimide, polycarbonate, or cellulose acetate propionate. The substrate 100 may have a multilayer structure including two layers each including a polymer resin and an inorganic material (e.g., silicon oxide (SiO X ), silicon nitride (SiN X ), silicon oxynitride (SiO X N Y ) or the like), and various modifications may be made.

[0083] The pixel circuit layer 200 may be provided on the substrate 100. The pixel circuit layer 200 may include a transistor TFT, an inorganic insulating layer IIL, and an organic insulating layer OIL. The transistor TFT may include a semiconductor layer Act, a gate electrode GE, a source electrode SE, and a drain electrode DE. The inorganic insulating layer IIL may include a gate insulating layer IIL1, a first interlayer insulating layer IIL2, and a second interlayer insulating layer IIL3. For the convenience of explanation, Figure 5 Only the transistor TFT is shown in FIG. 1 , and the transistor TFT may correspond to the first transistor T1 described above.

[0084] The semiconductor layer Act may be disposed on the substrate 100. The semiconductor layer Act may include polycrystalline silicon. As another example, the semiconductor layer Act may include amorphous silicon, an oxide semiconductor, an organic semiconductor, or the like. In an embodiment, the semiconductor layer Act may include a channel region, a source region, and a drain region, wherein the source region and the drain region may be respectively arranged on both sides of the channel region.

[0085] The gate insulating layer IIL1 may be disposed on the semiconductor layer Act and the substrate 100. The gate insulating layer IIL1 may include an inorganic insulating material such as silicon oxide (SiOX ), silicon nitride (SiN X ), silicon oxynitride (SiO X N Y ), aluminum oxide (Al2O3), titanium oxide (TiO2), tantalum pentoxide (Ta2O5), hafnium oxide (HfO2), zinc oxide (ZnO X ) or the like. Zinc oxide (ZnO X ) may include zinc oxide (ZnO) and / or zinc peroxide (ZnO2).

[0086] The gate electrode GE may be disposed on the gate insulating layer IIL1. For example, by disposing the gate insulating layer IIL1 between the semiconductor layer Act and the gate electrode GE, insulation between the semiconductor layer Act and the gate electrode GE may be ensured. The gate electrode GE may overlap with the channel region of the semiconductor layer Act. The gate electrode GE may include a low-resistance metal material. In embodiments, the gate electrode GE may include a conductive material including molybdenum (Mo), aluminum (Al), copper (Cu), titanium (Ti), or the like, and may have a single-layer structure or a multi-layer structure each including the above conductive materials.

[0087] The first interlayer insulating layer IIL2 may be disposed on the gate electrode GE and the gate insulating layer IIL1. The first interlayer insulating layer IIL2 may include an inorganic insulating material such as silicon oxide (SiO X ), silicon nitride (SiN X ), silicon oxynitride (SiO X N Y ), aluminum oxide (Al2O3), titanium oxide (TiO2), tantalum pentoxide (Ta2O5), hafnium oxide (HfO2), zinc oxide (ZnO X ) or similar.

[0088] The source electrode SE and the drain electrode DE may be disposed on the first interlayer insulating layer IIL2. Each of the source electrode SE and the drain electrode DE may be electrically connected to the semiconductor layer Act via contact holes formed in the gate insulating layer IIL1 and the first interlayer insulating layer IIL2. At least one of the source electrode SE and the drain electrode DE may include a conductive material containing Mo, Al, Cu, Ti, or the like, and may have a single-layer structure or a multilayer structure each including the above conductive materials. In an embodiment, at least one of the source electrode SE and the drain electrode DE may have a multilayer structure of Ti / Cu / Ti.

[0089] The second interlayer insulating layer IIL3 may be disposed on the source electrode SE, the drain electrode DE, and the first interlayer insulating layer IIL2. The second interlayer insulating layer IIL3 may include an inorganic insulating material such as silicon oxide (SiO X ), silicon nitride (SiN X), silicon oxynitride (SiO X N Y ), aluminum oxide (Al2O3), titanium oxide (TiO2), tantalum pentoxide (Ta2O5), hafnium oxide (HfO2), zinc oxide (ZnO X ) or similar.

[0090] The organic insulating layer OIL may be disposed on the second interlayer insulating layer 1IL3. The organic insulating layer OIL may be used to substantially planarize the upper portion of the pixel circuit layer 200. For example, the organic insulating layer OIL may include an organic material such as an acryl-based material, benzocyclobutene (BCB), hexamethyldisiloxane (HMDSO), or the like. Figure 5 The organic insulating layer OIL is shown as a single layer, but various modifications are possible. For example, the organic insulating layer OIL may also be a multi-layered layer.

[0091] The display element layer 300 may be disposed on the pixel circuit layer 200. The display element layer 300 may include a display element 310 and a pixel defining layer 320. The display element 310 may be electrically connected to a transistor TFT. For example, the display element 310 may be an organic light emitting diode (OLED) including a pixel electrode 311, an opposing electrode 313, and an intermediate layer 312 disposed between the pixel electrode 311 and the opposing electrode 313 and including an emissive layer. The electrical connection of the display element 310 to the transistor TFT may be understood as the electrical connection of the pixel electrode 311 of the OLED to the transistor TFT.

[0092] The pixel electrode 311 can be electrically connected to the transistor TFT by contacting any one of the source electrode SE and the drain electrode DE through a contact hole formed in the second interlayer insulating layer IIL3 and the organic insulating layer OIL. The pixel electrode 311 may include a conductive oxide such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (In2O3), indium gallium oxide (IGO), or aluminum zinc oxide (AZO). In an embodiment, the pixel electrode 311 may include a reflective film containing silver (Ag), magnesium (Mg), Al, platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), a compound thereof, or a combination thereof. In an embodiment, the pixel electrode 311 may further include a film containing ITO, IZO, ZnO, or In2O3 above / below the reflective film described above.

[0093] The pixel-defining layer 320 may cover the edge of the pixel electrode 311. The pixel-defining layer 320 may have a pixel opening portion, and the pixel opening portion may overlap the pixel electrode 311. The pixel opening portion may define an emission area for light emitted by the display element 310. The pixel-defining layer 320 may include an organic insulating material and / or an inorganic insulating material. In some embodiments, the pixel-defining layer 320 may include a light-blocking material.

[0094] The intermediate layer 312 may be provided on the pixel electrode 311 and the pixel defining layer 320. The intermediate layer 312 may include a low molecular weight material or a polymer material. In the case where the intermediate layer 312 includes a low molecular weight material, the intermediate layer 312 may have a structure in which a hole injection layer (HIL), a hole transport layer (HTL), an emission layer (EML), an electron transport layer (ETL), an electron injection layer (EIL) or the like can be stacked one on top of another in a single or complex structure, and may be formed by a vacuum deposition method. In the case where the intermediate layer 312 includes a polymer material, the intermediate layer 312 may have a structure including an HTL and an EML. In this case, the HTL may include poly (3,4-ethylenedioxythiophene) (PEDOT), and the EML may include a polymer material, such as a poly (p-phenylene vinylene) (PPV)-based polymer material, a polyfluorene-based polymer material or the like. The intermediate layer 312 may be formed by screen printing, inkjet printing, laser induced thermal imaging (LITI) or the like. The intermediate layer 312 is not limited thereto and may also have various structures. Also, the intermediate layer 312 may include an integral layer over the plurality of pixel electrodes 311 , or may include a layer patterned to correspond to each of the pixel electrodes 311 .

[0095] The opposing electrode 313 may be disposed on the intermediate layer 312 and the pixel defining layer 320. The opposing electrode 313 may be formed as a single body corresponding to the plurality of pixel electrodes 311 in the plurality of organic light-emitting diodes. The opposing electrode 313 may include a transparent conductive layer containing ITO, In2O3, or IZO, and may also include a translucent film containing Al, Ag, or the like. For example, the opposing electrode 313 may include a translucent film containing Mg or Ag.

[0096] Since the display element 310 may be easily damaged by moisture or oxygen from the outside, the encapsulation layer 400 may cover the display element 310 to protect the display element 310. Figure 5 , the encapsulation layer 400 may include a first inorganic encapsulation layer 410 , an organic encapsulation layer 420 , and a second inorganic encapsulation layer 430 .

[0097] The first inorganic encapsulating layer 410 may cover the opposite electrode 313 and may include silicon oxide (SiO X ), silicon nitride (SiN X ) and / or silicon oxynitride (SiOX N Y ). When necessary, other layers such as a cover layer or the like may also be between the first inorganic encapsulating layer 410 and the opposite electrode 313. Since the first inorganic encapsulating layer 410 may be formed along the underlying structure, as shown in FIG. Figure 5 The upper surface of the first inorganic encapsulation layer 410 shown in FIG may be uneven. The organic encapsulation layer 420 may cover the first inorganic encapsulation layer 410, and unlike the first inorganic encapsulation layer 410, the upper surface of the organic encapsulation layer 420 may be formed to be substantially flat. The organic encapsulation layer 420 may include one or more materials selected from the group consisting of polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyarylate, and HMDSO. The second inorganic encapsulation layer 430 may cover the organic encapsulation layer 420 and may include silicon oxide (SiO2), silicon nitride (SiN X ), silicon oxynitride (SiON) or the like.

[0098] As described above, the encapsulation layer 400 includes the first inorganic encapsulation layer 410, the organic encapsulation layer 420, and the second inorganic encapsulation layer 430. Even in the case where a plurality of cracks occur in the encapsulation layer 400, such cracks can be connected without being connected between the first inorganic encapsulation layer 410 and the organic encapsulation layer 420 or between the organic encapsulation layer 420 and the second inorganic encapsulation layer 430 by the multi-layer structure such as the encapsulation layer 400. Therefore, the formation of a path through which external moisture or oxygen or the like passes through the display panel 10 can be prevented or reduced.

[0099] Figure 6 The display device 1 according to the embodiment (for example, see Figure 2 ) is a schematic plan view of an optical functional layer 20.

[0100] The optical functional layer 20 may have an overall shape similar to a rectangular shape or a square shape. Specifically, the optical functional layer 20 may include a 1-1 side 20S1 and a 1-2 side 20S2 facing each other, and a 1-3 side 20S3 and a 1-4 side 20S4 facing each other and positioned between the 1-1 side 20S1 and the 1-2 side 20S2. In this article, the side of a component means the end of the component in a predetermined direction. For example, the 1-1 side 20S1 means the end of the optical functional layer 20 in the -y direction, and the 1-2 side 20S2 means the end of the optical functional layer 20 in the +y direction. The 1-3 side 20S3 means the end of the optical functional layer 20 in the -x direction, and the 1-4 side 20S4 means the end of the optical functional layer 20 in the +x direction.

[0101] The 1-1st vertex 20V1 can be formed by bringing the 1-1st side 20S1 and the 1-3rd side 20S3 into contact with each other, and the 1-2nd vertex 20V2 can be formed by bringing the 1-1st side 20S1 and the 1-4th side 20S4 into contact with each other. The 1-2nd vertex 20V2 can be positioned a certain distance away from the 1-1st vertex 20V1 in the +x direction. For example, the 1-1st vertex 20V1 can be positioned at the lower left of the optical function layer 20, and the 1-2nd vertex 20V2 can be positioned at the lower right of the optical function layer 20.

[0102] The 1-3rd vertex 20V3 can be formed by bringing the 1-2nd side 20S2 and the 1-3rd side 20S3 into contact with each other, and the 1-4th vertex 20V4 can be formed by bringing the 1-2nd side 20S2 and the 1-4th side 20S4 into contact with each other. The 1-3rd vertex 20V3 can be positioned a certain distance away from the 1-1st vertex 20V1 in the +y direction, and the 1-4th vertex 20V4 can be positioned a certain distance away from the 1-3rd vertex 20V3 in the +x direction. For example, the 1-3rd vertex 20V3 can be positioned at the upper left of the optical functional layer 20, and the 1-4th vertex 20V4 can be positioned at the upper right of the optical functional layer 20.

[0103] although Figure 6 The 1-1st vertex 20V1, the 1-2nd vertex 20V2, the 1-3rd vertex 20V3, and the 1-4th vertex 20V4 are shown to be sharp or have angled shapes (or sharp corners), but the present disclosure is not limited thereto. For example, each of the 1-1st vertex 20V1, the 1-2nd vertex 20V2, the 1-3rd vertex 20V3, and the 1-4th vertex 20V4 may also have a rounded shape.

[0104] Figure 7 The display device 1 according to the embodiment (for example, see Figure 2 ) is a schematic plan view of the light control layer 30. For the convenience of explanation, Figure 7 , the optical functional layer 20 may be shown together (for example, referring to Figure 6 )'s 1-1st side 20S1, 1-2nd side 20S2, 1-3rd side 20S3, 1-4th side 20S4, 1-1st vertex 20V1, 1-2nd vertex 20V2, 1-3rd vertex 20V3 and 1-4th vertex 20V4.

[0105] Similar to the optical functional layer 20, the light control layer 30 may have an overall shape similar to a rectangular shape or a square shape. Specifically, the light control layer 30 may include a 2-1 side 30S1 and a 2-2 side 30S2 facing each other, and a 2-3 side 30S3 and a 2-4 side 30S4 facing each other and positioned between the 2-1 side 30S1 and the 2-2 side 30S2.

[0106] The 2-1st vertex 30V1 can be formed by bringing the 2-1st side 30S1 and the 2-3rd side 30S3 into contact with each other, and the 2-2nd vertex 30V2 can be formed by bringing the 2-1st side 30S1 and the 2-4th side 30S4 into contact with each other. The 2-2nd vertex 30V2 can be positioned a certain distance away from the 2-1st vertex 30V1 in the +x direction. For example, the 2-1st vertex 30V1 can be a vertex positioned at the lower left portion of the light control layer 30, and the 2-2nd vertex 30V2 can be a vertex positioned at the lower right portion of the light control layer 30.

[0107] The 2-3 vertex 30V3 can be formed by bringing the 2-2 side 30S2 and the 2-3 side 30S3 into contact with each other, and the 2-4 vertex 30V4 can be formed by bringing the 2-2 side 30S2 and the 2-4 side 30S4 into contact with each other. The 2-3 vertex 30V3 can be positioned to be spaced a certain distance from the 2-1 vertex 30V1 in the +y direction, and the 2-4 vertex 30V4 can be positioned to be spaced a certain distance from the 2-3 vertex 30V3 in the +x direction. For example, the 2-3 vertex 30V3 can be a vertex positioned at the upper left portion of the light control layer 30, and the 2-4 vertex 30V4 can be a vertex positioned at the upper right portion of the light control layer 30.

[0108] although Figure 7 The 2-1st vertex 30V1, the 2-2nd vertex 30V2, the 2-3rd vertex 30V3, and the 2-4th vertex 30V4 are shown to be pointed or angled, but the present disclosure is not limited thereto. For example, each of the 2-1st vertex 30V1, the 2-2nd vertex 30V2, the 2-3rd vertex 30V3, and the 2-4th vertex 30V4 may also have a rounded shape.

[0109] The light control layer 30 may include a groove G adjacent to its vertex. A plurality of grooves G may be provided. For example, the light control layer 30 may include a plurality of grooves G. The plurality of grooves G may be arranged to be adjacent to a plurality of vertices of the light control layer 30 in a plan view. For example, the light control layer 30 may include a groove G arranged to be adjacent to the 2-1 vertex 30V1 in a plan view and a groove G arranged to be adjacent to the 2-2 vertex 30V2 in a plan view. The light control layer 30 may include a groove G arranged to be adjacent to the 2-3 vertex 30V3 in a plan view and a groove G arranged to be adjacent to the 2-4 vertex 30V4 in a plan view.

[0110] The area of the light control layer 30 may be equal to or similar to the area of the optical functional layer 20, and the shape of the light control layer 30 may be the same as or similar to the shape of the optical functional layer 20. For example, in a plan view, the light control layer 30 and the optical functional layer 20 may completely overlap each other. Therefore, in a plan view, multiple sides of the light control layer 30 may overlap with multiple sides of the optical functional layer 20, and multiple vertices of the light control layer 30 may overlap with multiple vertices of the optical functional layer 20, respectively.

[0111] Specifically, if Figure 7 As shown in FIG, the 2-1st side 30S1 may overlap the 1-1st side 20S1 in a plan view, and the 2-2nd side 30S2 may overlap the 1-2nd side 20S2 in a plan view. The 2-3rd side 30S3 may overlap the 1-3rd side 20S3 in a plan view, and the 2-4th side 30S4 may overlap the 1-4th side 20S4 in a plan view. The 2-1st vertex 30V1 may overlap the 1-1st vertex 20V1 in a plan view, and the 2-2nd vertex 30V2 may overlap the 1-2nd vertex 20V2 in a plan view. The 2-3rd vertex 30V3 may overlap the 1-3rd vertex 20V3 in a plan view, and the 2-4th vertex 30V4 may overlap the 1-4th vertex 20V4 in a plan view.

[0112] In other words, in a plan view, multiple sides of the light control layer 30 may overlap with multiple sides of the optical function layer 20, and multiple vertices of the light control layer 30 may overlap with multiple vertices of the optical function layer 20, respectively. Figure 7As shown in FIG, the 2-1st side 30S1 may coincide with the 1-1st side 20S1 in a plan view, and the 2-2nd side 30S2 may coincide with the 1-2nd side 20S2 in a plan view. The 2-3rd side 30S3 may coincide with the 1-3rd side 20S3 in a plan view, and the 2-4th side 30S4 may coincide with the 1-4th side 20S4 in a plan view. The 2-1st vertex 30V1 may coincide with the 1-1st vertex 20V1 in a plan view, and the 2-2nd vertex 30V2 may coincide with the 1-2nd vertex 20V2 in a plan view. The 2-3rd vertex 30V3 may coincide with the 1-3rd vertex 20V3 in a plan view, and the 2-4th vertex 30V4 may coincide with the 1-4th vertex 20V4 in a plan view.

[0113] As described above, the 2-1st vertex 30V1, the 2-2nd vertex 30V2, the 2-3rd vertex 30V3, and the 2-4th vertex 30V4 may overlap with the 1-1st vertex 20V1, the 1-2nd vertex 20V2, the 1-3rd vertex 20V3, and the 1-4th vertex 20V4, respectively. Therefore, the groove G arranged adjacent to the 2-1st vertex 30V1 in a plan view may be arranged adjacent to the 1-1st vertex 20V1 in a plan view. Similarly, the groove G arranged adjacent to the 2-2nd vertex 30V2 in a plan view may be arranged adjacent to the 1-2nd vertex 20V2 in a plan view. The groove G arranged adjacent to the 2-3rd vertex 30V3 in a plan view may be arranged adjacent to the 1-3rd vertex 20V3 in a plan view. The groove G arranged adjacent to the 2-4th vertex 30V4 in a plan view may be arranged adjacent to the 1-4th vertex 20V4 in a plan view.

[0114] The groove G may be used as an alignment mark in a process of manufacturing the display device 1 as will be described below. Figure 7 It is shown that each of the grooves G has a circular shape in a plan view, but the present disclosure is not limited thereto.

[0115] Figure 8 It is intercepted along line I-I', Figure 1 Schematic cross-sectional view of the display device 1. Figure 9 It is intercepted along line II-II', Figure 1 Schematic cross-sectional view of the display device 1.

[0116] As described above, the light control layer 30 and the optical function layer 20 completely overlap each other in a plan view, and thus the sides of the light control layer 30 may be aligned with the sides of the optical function layer 20. The apex of the light control layer 30 may be aligned with the apex of the optical function layer 20.

[0117] For example, Figure 8As shown in the figure, the 2-1 side 30S1 of the light control layer 30 can be aligned with the 1-1 side 20S1 of the optical function layer 20. Although not shown in the drawings, the above description about the positional relationship between the 2-1 side 30S1 and the 1-1 side 20S1 can also be applied to the positional relationship between the 2-2 side 30S2 and the 1-2 side 20S2, the positional relationship between the 2-3 side 30S3 and the 1-3 side 20S3, and the positional relationship between the 2-4 side 30S4 and the 1-4 side 20S4. Therefore, redundant descriptions repeated in the above description are omitted.

[0118] Similarly, Figure 9 As shown in the figure, the 2-4 vertex 30V4 of the light control layer 30 can be aligned with the 1-4 vertex 20V4 of the optical function layer 20. Although not shown in the drawings, the above description about the positional relationship between the 2-4 vertex 30V4 and the 1-4 vertex 20V4 can also be applied to the positional relationship between the 2-1 vertex 30V1 and the 1-1 vertex 20V1, the positional relationship between the 2-2 vertex 30V2 and the 1-2 vertex 20V2, and the positional relationship between the 2-3 vertex 30V3 and the 1-3 vertex 20V3. Therefore, redundant descriptions repeated in the above description are omitted.

[0119] The cover window 40 may include a cover window substrate 41 and a light blocking layer 42. The cover window substrate 41 may form the overall appearance of the cover window 40. For example, the cover window substrate 41 may have substantially the same shape as the cover window 40. The cover window substrate 41 may include glass, sapphire, or plastic. For example, the cover window substrate 41 may be an ultra-thin glass whose strength may be enhanced by chemical strengthening, thermal strengthening, or the like. Or colorless polyimide (CPI). The cover window substrate 41 may have a structure in which a flexible polymer layer may be provided on the surface of a glass substrate, or may include only a polymer layer.

[0120] The light-blocking layer 42 may be disposed below the cover window substrate 41. Specifically, the light-blocking layer 42 may be disposed below a portion of the cover window substrate 41 corresponding to the peripheral area PA of the display device 1. Therefore, the light-blocking layer 42 may be disposed in the panel peripheral area 10PA of the display panel 10. The light-blocking layer 42 may extend along the periphery of the cover window substrate 41 and may have a shape corresponding to the peripheral area PA of the display device 1.

[0121] In an embodiment, the light blocking layer 42 may include a light blocking material. For example, the light blocking layer 42 may include an opaque material that blocks light so that the wires or circuits of the display panel 10 cannot be identified from the outside. The light blocking material may include at least one of a black dye and black particles. For example, the light blocking material may include Cr, CrO X 、Cr / CrO X 、Cr / CrO X / CrN Y , resin (carbon pigment, red, green and blue (RGB) mixed pigment), graphite, non-Cr pigment, lactam pigment or perylene pigment. The light-blocking material may include a black organic pigment, and the black organic pigment may include one or more selected from the group consisting of aniline black, lactam black and perylene black.

[0122] The groove G may be disposed in the peripheral area PA of the display device 1. For example, the groove G may be disposed in the panel peripheral area 10PA of the display panel 10. The adhesive layer 40a may fill the groove G.

[0123] The display device 1 is described above, but the present disclosure is not limited thereto. A method for manufacturing the display device 1 may also be included in the scope of the present disclosure. Hereinafter, the method for manufacturing the display device 1 will be described.

[0124] Figures 10 to 14 is a schematic diagram for describing a process of manufacturing the display device 1 according to an embodiment. Figures 10 to 14 In the example, we can take the line I-I' as the basis, Figure 1 The process of manufacturing the display device 1 is described with reference to a cross section of the display device 1 .

[0125] First, if Figure 10 As shown in the figure, the optical functional layer 20 can be attached to the display panel 10. Specifically, the optical functional layer 20 can be attached to the upper surface (in the +z direction) of the display panel 10. Although not shown in the drawings, an adhesive member may be between the optical functional layer 20 and the display panel 10. The adhesive member may include at least one of OCR, OCA, and PSA. The adhesive member can couple the optical functional layer 20 and the display panel 10 to each other. For example, the optical functional layer 20 can be attached to the display panel 10 by using an adhesive member.

[0126] Then, if Figure 11 As shown in , the light control layer 30 can be attached to the optical functional layer 20. The area of the light control layer 30 can be the same as or similar to the area of the optical functional layer 20, and the shape of the light control layer 30 can be the same as or similar to the shape of the optical functional layer 20. In a plan view, the light control layer 30 can be attached to the optical functional layer 20 so that the light control layer 30 and the optical functional layer 20 completely overlap each other. To this end, the above reference Figure 7 The grooves G described. In a plan view, the plurality of grooves G may be arranged to be adjacent to the plurality of vertices of the light control layer 30, respectively. The light control layer 30 and the optical function layer 20 may be attached to each other by aligning the light control layer 30 and the optical function layer 20 with each other using the grooves G so that multiple sides of the light control layer 30 overlap with multiple sides of the optical function layer 20, respectively, and multiple vertices of the light control layer 30 overlap with multiple vertices of the optical function layer 20, respectively.

[0127] In other words, the light control layer 30 and the optical function layer 20 may be attached so that multiple sides of the light control layer 30 respectively coincide with multiple sides of the optical function layer 20 and multiple vertices of the light control layer 30 respectively coincide with multiple vertices of the optical function layer 20 while aligning the light control layer 30 and the optical function layer 20 with each other by using the groove G. For example, the groove G of the light control layer 30 may serve as an alignment mark.

[0128] Typically, when attaching the light control layer to the optical functional layer using an adhesive member, multiple sides and multiple vertices of the light control layer can be used to attach the light control layer to a preset position on the optical functional layer. In the process of attaching the light control layer to the optical functional layer, the multiple sides and multiple vertices of the light control layer should be clearly identified on the optical functional layer. To this end, the area of the light control layer should be smaller than the area of the optical functional layer. For example, by positioning the multiple sides and multiple vertices of the light control layer on the optical functional layer, the multiple sides and multiple vertices of the light control layer can be clearly identified on the optical functional layer.

[0129] For example, Figure 15 ( Figure 15 As shown in FIG5 , which may be a schematic cross-sectional view of a portion of a display device manufactured according to a comparative example, a side of the light control layer 30 may be positioned on the optical functional layer 20. For example, the area of the light control layer 30 of the display device manufactured according to the comparative example may be smaller than that of the optical functional layer 20, and therefore, multiple sides and multiple vertices of the light control layer 30 may be positioned on the optical functional layer 20.

[0130] However, the light control layer 30 of the embodiment includes the groove G, and the groove G can be used as an alignment mark. Therefore, the area of the light control layer 30 may not be less than the area of the optical functional layer 20, and the light control layer 30 may have an area that is the same as or similar to the area of the optical functional layer 20. The light control layer 30 may have a shape that is the same as or similar to the shape of the optical functional layer 20. Since the area in which the adhesive layer forming material applied to the light control layer 30 is spread increases, the adhesive layer forming material applied to the light control layer 30 can be applied to the light control layer 30 more uniformly.

[0131] Then, if Figure 12 As shown in , a preliminary adhesive layer P40a can be formed on the light control layer 30. Specifically, since the adhesive layer forming material can be applied to the light control layer 30 and ultraviolet rays can be irradiated to the adhesive layer forming material, the adhesive layer forming material can be pre-cured. Therefore, a preliminary adhesive layer P40a can be formed on the light control layer 30. Here, "preliminary adhesive layer" can mean a layer that can be pre-cured by applying the adhesive layer forming material and irradiating the adhesive layer forming material with ultraviolet rays. The adhesive layer forming material can be applied to a preset position by using the groove G. For example, the groove G of the light control layer 30 can be used as an alignment mark.

[0132] The adhesive layer forming material may include at least one forming material selected from OCR, OCA, and PSA. For example, at least one of OCR, OCA, and PSA may be formed by pre-curing the adhesive layer forming material and curing the pre-cured adhesive layer forming material (e.g., main curing). Forming the preliminary adhesive layer P40a by applying the adhesive layer forming material and pre-curing the adhesive layer forming material by irradiating ultraviolet rays may be a technology used in the manufacture of display devices, and therefore its detailed description is omitted.

[0133] although Figure 12 Although not shown, in the case where the adhesive layer forming material is applied to the light control layer 30, the adhesive layer forming material may fill the groove G. The adhesive layer forming material filling the groove G may also be irradiated with ultraviolet rays, and thus, the adhesive layer forming material filling the groove G may also be pre-cured. For example, a portion of the preliminary adhesive layer P40a may fill the groove G.

[0134] Then, if Figure 13 As shown in FIG, a cover window 40 may be provided on the preliminary adhesive layer P40a, and the cover window 40 may be pressurized. The cover window 40 may be pressurized by the weight of the cover window 40, or by applying an external force. Pressurization of the cover window 40 may be a technique used in the manufacture of a display device, and thus a detailed description thereof is omitted.

[0135] Typically, when the area of the light control layer is reduced to a smaller area than the optical function layer, and multiple sides and vertices of the light control layer are positioned on the optical function layer, the preliminary adhesive layer may overflow. Specifically, after the cover window is placed on the preliminary adhesive layer on the light control layer, the preliminary adhesive layer may overflow when pressure is applied to the cover window. As a result, portions of the preliminary adhesive layer may be disposed on a layer disposed below the light control layer.

[0136] like Figure 15 ( Figure 15 As shown in FIG4 , which is a schematic cross-sectional view of a portion of a display device manufactured according to a comparative example, in the display device manufactured according to the comparative example, the area of the light control layer 30 may be smaller than the area of the optical function layer 20, and thus the organic material layer OF may be provided on the optical function layer 20. For example, the organic material layer OF may be a portion of the preliminary adhesive layer P40a that overflows in the process of disposing the cover window 40 on the preliminary adhesive layer P40a and pressurizing the cover window 40.

[0137] Since the organic material layer OF has fluidity before the main curing, part of the organic material layer OF may seep between the optical function layer 20 and the light control layer 30. Part of the organic material layer OF may reach the area corresponding to the display area DA, and such part of the organic material layer OF may generate stains on the display device, thereby reducing the display quality of the display device. For example, defects may occur in the manufacturing process of the display device.

[0138] However, the light control layer 30 of the embodiment may have an area that is the same as or similar to that of the optical function layer 20, and the multiple sides and multiple vertices of the light control layer 30 may not be positioned on the optical function layer 20. For example, the multiple sides of the light control layer 30 respectively coincide with the multiple sides of the optical function layer 20, and the multiple vertices of the light control layer 30 respectively coincide with the multiple vertices of the optical function layer 20. Therefore, in the process of manufacturing the display device 1 according to the embodiment, even in the case where part of the preliminary adhesive layer P40a overflows, the overflowed portion of the preliminary adhesive layer P40a may be provided on the display panel 10. Figure 15 Compared to the organic material layer OF shown in FIG. , the overflowing portion of the preliminary adhesive layer P40a can be positioned farther from the area corresponding to the display area DA. Therefore, even if the overflowing portion of the preliminary adhesive layer P40a penetrates between the display panel 10 and the optical function layer 20, it may be difficult for the overflowing portion of the preliminary adhesive layer P40a to reach the area corresponding to the display area DA. Therefore, the overflowing portion of the preliminary adhesive layer P40a may not generate stains on the display device 1, or the extent of the stains may be reduced. For example, the possibility of defects occurring in the manufacturing process of the display device can be reduced.

[0139] Then, if Figure 14 As shown in , the adhesive layer 40a can be formed by irradiating ultraviolet rays to the preliminary adhesive layer P40a. Here, the "adhesive layer" may mean a layer that can be mainly cured by irradiating ultraviolet rays to the preliminary adhesive layer P40a. The adhesive layer 40a may include at least one of OCR, OCA, and PSA. Forming the adhesive layer 40a by irradiating ultraviolet rays to the preliminary adhesive layer P40a to cause it to be mainly cured may be a technology used in the manufacture of display devices, and therefore its detailed description is omitted.

[0140] Since the portion of the preliminary adhesive layer P40a filling the groove G can also be irradiated with ultraviolet rays, the portion of the adhesive layer 40a can fill the groove G, as shown in FIG. Figure 9 As shown in .

[0141] Figure 16 is a schematic plan view of a light control layer 30 ′ of a display device 2 according to an embodiment. Figure 17 is a schematic cross-sectional view of a portion of a display device 2 according to an embodiment. Figure 18is a schematic cross-sectional view of a portion of a display device 2 according to an embodiment. Figure 17 is along the corresponding Figure 1 Line I-I', Figure 16 Schematic cross-sectional view of the section of the display device 2 taken along line VI-VI'. Figure 18 is along the corresponding Figure 1 Line II-II', Figure 16 VII-VII' is a schematic cross-sectional view of the cross section of the display device 2. For example, Figure 17 Corresponding to Figure 8 ,and Figure 18 Corresponding to Figure 9 Since the display device 2 according to the embodiment can be compared with the above reference Figures 1 to 9 The display device 1 described above is similar, so the following description will be made of the same Figures 1 to 9 The difference between the display device 1 described above and the display device 1 described above is shown in FIG. Figures 16 to 18 In, with Figures 1 to 9 The same reference numerals as those in the drawings refer to the same components, and redundant descriptions thereof are omitted.

[0142] According to the above reference Figures 1 to 9 The display device 1 of the embodiment described may include a display panel 10, an optical function layer 20, a light control layer 30, a cover window 40, and an adhesive layer 40a. Figures 1 to 9 The light control layer 30 of the display device 1 of the described embodiment may include the groove G. The display device 2 according to the embodiment may include a display panel 10, an optical function layer 20, a light control layer 30', a cover window 40, and an adhesive layer 40a', and the light control layer 30' of the display device 2 according to the embodiment may also include the groove G.

[0143] However, if Figure 16 As shown in , the light control layer 30 ' of the display device 2 according to the embodiment may further include a groove T. A plurality of grooves T may be provided. For example, the light control layer 30 ' of the display device 2 may further include a plurality of grooves T. In a plan view, the plurality of grooves T may be respectively arranged between the plurality of grooves G. Specifically, the groove T may be arranged between the groove G adjacent to the 2-1st vertex 30V1 'and the groove G adjacent to the 2-2nd vertex 30V2 ', and the groove T may be arranged between the groove G adjacent to the 2-3rd vertex 30V3 'and the groove G adjacent to the 2-4th vertex 30V4 '. The groove T may be arranged between the groove G adjacent to the 2-1st vertex 30V1 'and the groove G adjacent to the 2-3rd vertex 30V3 ', and the groove T may be arranged between the groove G adjacent to the 2-2nd vertex 30V2 'and the groove G adjacent to the 2-4th vertex 30V4 '.

[0144] The groove T may extend along the side of the light control layer 30'. For example, each of the grooves T may extend along a side of the light control layer 30'. Specifically, the groove G adjacent to the 2-1st vertex 30V1' and the groove G adjacent to the 2-2nd vertex 30V2' may extend along the 2-1st side 30S1'. For example, the groove T between the groove G adjacent to the 2-1st vertex 30V1' and the groove G adjacent to the 2-2nd vertex 30V2' may extend in a first direction (e.g., x-axis direction). Similarly, the groove G adjacent to the 2-3rd vertex 30V3' and the groove G adjacent to the 2-4th vertex 30V4' may extend along the 2-2nd side 30S2'. For example, the groove T between the groove G adjacent to the 2-3rd vertex 30V3' and the groove G adjacent to the 2-4th vertex 30V4' may extend in a first direction (e.g., x-axis direction).

[0145] The groove T between the groove G adjacent to the 2-1st vertex 30V1' and the groove G adjacent to the 2-3rd vertex 30V3' may extend along the 2-3rd side 30S3'. For example, the groove T between the groove G adjacent to the 2-1st vertex 30V1' and the groove G adjacent to the 2-3rd vertex 30V3' may extend in a second direction (e.g., the y-axis direction) that intersects the first direction (e.g., the x-axis direction). The groove T between the groove G adjacent to the 2-2nd vertex 30V2' and the groove G adjacent to the 2-4th vertex 30V4' may extend along the 2-4th side 30S4'. For example, the groove T between the groove G adjacent to the 2-2nd vertex 30V2' and the groove G adjacent to the 2-4th vertex 30V4' may extend in the second direction (e.g., the y-axis direction).

[0146] In other words, the plurality of grooves T may be arranged adjacent to multiple sides of the light control layer 30', respectively. The groove T may be arranged adjacent to the 2-1 side 30S1', and the groove T may be arranged adjacent to the 2-2 side 30S2'. The groove T may be arranged adjacent to the 2-3 side 30S3', and the groove T may be arranged adjacent to the 2-4 side 30S4'. As described below, the grooves T may prevent or reduce overflow of the adhesive layer forming material during the process of manufacturing the display device 2 by increasing the surface area of the light control layer 30'.

[0147] like Figure 17 As shown in FIG, the trench T may be arranged in the peripheral area PA of the display device 2. For example, the trench T may be arranged in the panel peripheral area 10PA of the display panel 10. The adhesive layer 40a' may fill the trench T. Figure 18 As shown in FIG, the groove G may also be arranged in the peripheral area PA of the display device 2. For example, the groove G may be arranged in the panel peripheral area 10PA of the display panel 10. The adhesive layer 40a' may fill the groove G.

[0148] Figures 19 to 21 is used to describe Figure 16 Schematic diagram of the schematic cross-sectional shape of the groove T. For the convenience of explanation, Figures 19 to 21 In the embodiment, the cross-sectional shape of the trench T can be based on the cross-sectional shape of the trench T taken along the line IV-IV'. Figure 16 The cross section of the light control layer 30' is used for description.

[0149] like Figure 19 As shown in , the trench T may include a plurality of sub-grooves. For example, the trench T may include a first sub-groove ST1, a second sub-groove ST2, and a third sub-groove ST3. The cross-sectional shape of each of the first sub-groove ST1, the second sub-groove ST2, and the third sub-groove ST3 may have an inverted triangle shape. As another example, as Figure 20 As shown in , the cross-sectional shape of each of the first sub-trench ST1, the second sub-trench ST2, and the third sub-trench ST3 may have a square shape. As another example, Figure 21 As shown in FIG, the trench T may include a groove, and the cross-sectional shape of the trench T may be similar to an elliptical shape. However, the present disclosure is not limited thereto.

[0150] Figure 22 yes Figure 16 FIG. 1 is a schematic enlarged plan view of a portion A of a light control layer 30 ′.

[0151] like Figure 22 As shown in , the display device 2 may further include a control dam D. The control dam D may be disposed in the groove G of the light control layer 30 ′. Specifically, the control dam D may be disposed in each of the grooves G of the light control layer 30 ′. The control dam D may extend in one direction. Figure 22 The control dam D is shown to extend in a first direction (e.g., the x-axis direction), but the present disclosure is not limited thereto. For example, the control dam D may extend in a second direction (e.g., the y-axis direction). Alternatively, the control dam D may also extend in a direction between the first direction (e.g., the x-axis direction) and the second direction (e.g., the y-axis direction). Therefore, the control dam D may contact the side surface of the groove G. The control dam D according to an embodiment may be provided integrally with the light control layer 30'. For example, the groove G may be formed by removing a portion of the preliminary light control layer, and the control dam D may be formed by not removing a preset portion while removing a portion of the preliminary light control layer.

[0152] Figure 23 is used to describe Figure 22 Schematic diagram of the cross-sectional shape of the groove G and the control dam D. Specifically, Figure 23 It is intercepted along line V-V', Figure 22 Schematic cross-sectional view of a light control layer 30'.

[0153] like Figure 23As shown in , the control dam D may be arranged in the groove G of the light control layer 30'. The height of the control dam D based on the bottom surface (in the -z direction) of the groove G may be a first height H1, and the height of the light control layer 30' based on the bottom surface (in the -z direction) of the groove G may be a second height H2. Here, the height of the control dam D based on the bottom surface (in the -z direction) of the groove G means the shortest distance between the bottom surface (in the -z direction) of the groove G and the upper surface (in the +z direction) of the control dam D in the thickness direction (for example, the z-axis direction). Here, the second height H2 of the light control layer 30' based on the bottom surface (in the -z direction) of the groove G means the shortest distance between the bottom surface (in the -z direction) of the groove G and the upper surface (in the +z direction) of the light control layer 30' in the thickness direction (for example, the z-axis direction).

[0154] The first height H1 may be smaller than the second height H2. For example, the second height H2 may be greater than the first height H1. As described above, since the groove G of the light control layer 30' can be used as an alignment mark and the height of the light control layer 30' including the groove G can be high, workers and / or equipment can better recognize the groove G during the process of manufacturing the display device 2.

[0155] The display device 2 is described above, but the present disclosure is not limited thereto. A method for manufacturing the display device 2 may also be included in the scope of the present disclosure. Hereinafter, the method for manufacturing the display device 2 is described.

[0156] Figures 24 to 27 Schematic diagram for describing a process of manufacturing the display device 2 according to an embodiment. Figures 24 to 27 Based on the interception along line VI-VI' Figure 17 The process of manufacturing the display device 2 is described with reference to the cross section of the display device 2. Since the process of manufacturing the display device 2 according to the embodiment can be the same as that of the above reference Figures 10 to 14 The process of manufacturing the display device 1 described above is similar, so in the following, the process of manufacturing the display device 1 described above may be described. Figures 10 to 14 The difference between the process of manufacturing the display device 1 described above. Figures 24 to 27 In, with Figures 10 to 14 The same reference numerals as those in the drawings refer to the same components, and redundant descriptions thereof are omitted.

[0157] First, refer to the above Figure 10 Similar to the process of manufacturing the display device 1 described above, the optical functional layer 20 can be attached to the display panel 10. Figure 24, the light control layer 30' may be attached to the optical functional layer 20. The area of the light control layer 30' may be the same as or similar to that of the optical functional layer 20, and the shape of the light control layer 30' may be the same as or similar to that of the optical functional layer 20. The light control layer 30' and the optical functional layer 20 may be attached by aligning the light control layer 30' and the optical functional layer 20 with each other using the grooves G so that multiple sides of the light control layer 30' respectively overlap with multiple sides of the optical functional layer 20, and multiple vertices of the light control layer 30' respectively overlap with multiple vertices of the optical functional layer 20.

[0158] As mentioned above Figure 16 As described, the light control layer 30' may include a plurality of grooves T, and the plurality of grooves T may be arranged to be adjacent to multiple sides of the light control layer 30' in a plan view. Figure 24 Not shown, but as mentioned above Figure 22 As described, the control dam D may be disposed in each of the grooves G. The control dam D may be provided integrally with the light control layer 30 ′.

[0159] Then, if Figure 25 As shown in FIG, a preliminary adhesive layer P40a' may be formed on the light control layer 30'. Specifically, since the adhesive layer forming material may be applied to the light control layer 30' and ultraviolet rays may be irradiated to the adhesive layer forming material, the adhesive layer forming material may be pre-cured.

[0160] When the adhesive layer forming material is applied to the light control layer 30', the adhesive layer forming material may fill the groove T. For example, the adhesive layer forming material may also fill the groove T. The adhesive layer forming material filling the groove T may be irradiated with ultraviolet rays, and thus, the adhesive layer forming material filling the groove T may also be pre-cured. For example, a portion of the preliminary adhesive layer P40a' may fill the groove T.

[0161] although Figure 25 Although not shown, in the case where the adhesive layer forming material is applied to the light control layer 30', the adhesive layer forming material may fill the groove G. For example, the adhesive layer forming material may also fill the groove G. The adhesive layer forming material filling the groove G may also be irradiated with ultraviolet light, and thus the adhesive layer forming material filling the groove G may also be pre-cured. For example, a portion of the preliminary adhesive layer P40a' may fill the groove G.

[0162] Then, if Figure 26As shown in , a cover window 40 can be provided on the preliminary adhesive layer P40a', and the cover window 40 can be pressurized. Since the light control layer 30' includes the groove T, the surface area of the light control layer 30' can be increased. For example, the contact surface between the layer provided below the preliminary adhesive layer P40a' and the preliminary adhesive layer P40a' can be increased. Since the control dam D can be arranged in the groove G of the light control layer 30', the contact surface between the layer provided below the preliminary adhesive layer P40a' and the preliminary adhesive layer P40a' can be increased. Therefore, even in the case where the cover window 40 on the preliminary adhesive layer P40a' is pressurized, part of the preliminary adhesive layer P40a' may not overflow, or even in the case where part of the preliminary adhesive layer P40a' does overflow, the degree of overflow can be reduced. For example, in the manufacturing process of the display device, the possibility of defects can be reduced.

[0163] Then, if Figure 27 As shown in FIG, the adhesive layer 40a' can be formed by irradiating ultraviolet rays to the preliminary adhesive layer P40a'. Since the portion of the preliminary adhesive layer P40a' filling the trench T can also be irradiated with ultraviolet rays, the portion of the adhesive layer 40a' can fill the trench T. Since the portion of the preliminary adhesive layer P40a' filling the groove G can also be irradiated with ultraviolet rays, the portion of the adhesive layer 40a' can fill the groove G, as shown in FIG. Figure 18 As shown in .

[0164] According to the embodiments described above, a display device and a method of manufacturing the display device can be realized in which the possibility of defects occurring in the manufacturing operation thereof can be reduced. The scope of the present disclosure is not limited by these effects.

[0165] It should be understood that the embodiments described herein should be considered in a descriptive sense only and not for purposes of limitation. Descriptions of features or aspects in each embodiment should generally be considered applicable to other similar features or aspects in other embodiments. Although one or more embodiments have been described with reference to the drawings, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope as defined in the appended claims.

Claims

1. A display device, comprising: A display panel, the display panel comprising a display element; an optical functional layer, wherein the optical functional layer is disposed on the display panel; as well as a light control layer, the light control layer being disposed on the optical functional layer, Wherein, the light control layer includes a plurality of grooves, In a plan view, the plurality of grooves are arranged to be adjacent to a plurality of vertices of the light control layer, respectively. In a plan view, multiple sides of the light control layer overlap with multiple sides of the optical function layer, respectively, and In a plan view, the plurality of vertices of the light control layer overlap with the plurality of vertices of the optical function layer, respectively.

2. The display device according to claim 1, wherein In a plan view, the multiple sides of the light control layer respectively coincide with the multiple sides of the optical function layer, and In a plan view, the plurality of vertices of the light control layer respectively coincide with the plurality of vertices of the optical function layer.

3. The display device according to claim 1, wherein The optical functional layer includes a 1-1 side, a 1-2 side, a 1-3 side, and a 1-4 side, the 1-1 side and the 1-2 side facing each other, and the 1-3 side and the 1-4 side facing each other and positioned between the 1-1 side and the 1-2 side, The light-control layer includes a 2-1 side, a 2-2 side, a 2-3 side, and a 2-4 side, the 2-1 side and the 2-2 side facing each other, and the 2-3 side and the 2-4 side facing each other and positioned between the 2-1 side and the 2-2 side, In a plan view, the 2-1 side coincides with the 1-1 side, In a plan view, the 2-2 side coincides with the 1-2 side, In a plan view, the 2-3 side coincides with the 1-3 side, and In a plan view, the 2-4th side coincides with the 1-4th side.

4. The display device according to claim 3, wherein The optical functional layer includes a 1-1 vertex provided by contact between the 1-1 side and the 1-3 side, a 1-2 vertex provided by contact between the 1-1 side and the 1-4 side, a 1-3 vertex provided by contact between the 1-2 side and the 1-3 side, and a 1-4 vertex provided by contact between the 1-2 side and the 1-4 side, the light-control layer including a 2-1st vertex provided by contact between the 2-1st side and the 2-3rd side, a 2-2nd vertex provided by contact between the 2-1st side and the 2-4th side, a 2-3rd vertex provided by contact between the 2-2nd side and the 2-3rd side, and a 2-4th vertex provided by contact between the 2-2nd side and the 2-4th side, In the plan view, the 2-1 vertex coincides with the 1-1 vertex. In the plan view, the 2-2nd vertex coincides with the 1-2nd vertex, In a plan view, the 2nd-3rd vertex coincides with the 1st-3rd vertex, and In a plan view, the 2nd to 4th vertices coincide with the 1st to 4th vertices.

5. The display device according to claim 1, wherein The light control layer further comprises a plurality of grooves, and In a plan view, the plurality of trenches are each arranged between some of the plurality of grooves. The display device according to claim 5 , wherein: Each of the plurality of grooves extends along one of the sides of the light management layer.

7. The display device according to claim 1, further comprising: A control dam is disposed in each of the plurality of grooves.

8. The display device according to claim 7, wherein: The control dam and the light control layer are integral with each other.

9. The display device according to claim 1, further comprising: a cover window, the cover window being arranged above the display panel; as well as An adhesive layer is disposed between the light control layer and the cover window.

10. The display device according to claim 9, wherein The light control layer further comprises a plurality of grooves, In a plan view, the plurality of grooves are each arranged between some of the plurality of grooves, and The adhesive layer fills the plurality of grooves.

11. The display device according to claim 1, wherein The optical functional layer includes a polarizing film.

12. A method for manufacturing a display device, the method comprising: attaching the optically functional layer to the display panel; attaching a light management layer to the optically functional layer; forming a preliminary adhesive layer by applying an adhesive layer-forming material to the light control layer and irradiating the adhesive layer-forming material with ultraviolet rays; placing a cover window on the preliminary adhesive layer and pressurizing the cover window; as well as forming an adhesive layer by irradiating ultraviolet rays to the preliminary adhesive layer, Wherein, the light control layer includes a plurality of grooves, In a plan view, the plurality of grooves are arranged to be adjacent to a plurality of vertices of the light control layer, respectively, and The attaching of the light control layer includes attaching the light control layer to the optical functional layer by using the plurality of grooves so that, in a plan view, multiple sides of the light control layer respectively overlap with multiple sides of the optical functional layer and the multiple vertices of the light control layer respectively overlap with multiple vertices of the optical functional layer.

13. The method according to claim 12, wherein: The attaching of the light control layer includes attaching the light control layer to the optical functional layer by using the plurality of grooves so that the multiple sides of the light control layer respectively coincide with the multiple sides of the optical functional layer and the multiple vertices of the light control layer respectively coincide with the multiple vertices of the optical functional layer in a planar view.

14. The method according to claim 12, wherein: The optical functional layer includes a 1-1 side, a 1-2 side, a 1-3 side, and a 1-4 side, the 1-1 side and the 1-2 side facing each other, and the 1-3 side and the 1-4 side facing each other and positioned between the 1-1 side and the 1-2 side, The light control layer includes a 2-1 side, a 2-2 side, a 2-3 side, and a 2-4 side, the 2-1 side and the 2-2 side facing each other, and the 2-3 side and the 2-4 side facing each other and positioned between the 2-1 side and the 2-2 side, and The attaching of the light control layer includes attaching the light control layer to the optical functional layer by using the multiple grooves so that the 2-1 side coincides with the 1-1 side in a plan view, the 2-2 side coincides with the 1-2 side in a plan view, the 2-3 side coincides with the 1-3 side in a plan view, and the 2-4 side coincides with the 1-4 side in a plan view.

15. The method according to claim 14, wherein The optical functional layer includes a 1-1 vertex provided by contact between the 1-1 side and the 1-3 side, a 1-2 vertex provided by contact between the 1-1 side and the 1-4 side, a 1-3 vertex provided by contact between the 1-2 side and the 1-3 side, and a 1-4 vertex provided by contact between the 1-2 side and the 1-4 side, The light-control layer includes a 2-1st vertex provided by contact between the 2-1st side and the 2-3rd side, a 2-2nd vertex provided by contact between the 2-1st side and the 2-4th side, a 2-3rd vertex provided by contact between the 2-2nd side and the 2-3rd side, and a 2-4th vertex provided by contact between the 2-2nd side and the 2-4th side, and The attaching of the light control layer includes attaching the light control layer to the optical functional layer by using the multiple grooves so that the 2-1st vertex coincides with the 1-1st vertex in a plan view, the 2-2nd vertex coincides with the 1-2nd vertex in a plan view, the 2-3rd vertex coincides with the 1-3rd vertex in a plan view, and the 2-4th vertex coincides with the 1-4th vertex in a plan view.

16. The method according to claim 12, wherein: The light control layer further comprises a plurality of grooves, In a plan view, the plurality of grooves are each arranged between some of the plurality of grooves, and Forming the preliminary adhesive layer includes filling the adhesive layer-forming material in the plurality of grooves.

17. The method according to claim 16, wherein Each of the plurality of grooves extends along one of the sides of the light management layer.

18. The method according to claim 12, wherein: A control dam is disposed in each of the plurality of grooves, and Forming the preliminary adhesive layer includes filling the adhesive layer-forming material in the plurality of grooves.

19. The method according to claim 18, wherein The control dam and the light control layer are integral with each other.

20. The method according to claim 12, wherein The optical functional layer includes a polarizing film.

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