Display device

Abstract

The invention relates to a display device. The display device includes: a first substrate having a first polishing surface at an edge thereof; a second substrate facing the first substrate and having a second polishing surface at an edge thereof; a plurality of pixels disposed on one surface of the first substrate; a display area including a plurality of pixels; a non-display area disposed outside the display area; and a barrier disposed between the first substrate and the second substrate in the non-display area.

Description

Technical Field

[0001] The present disclosure relates to a display device, and more particularly, for example but not limited to, a display device capable of improving the boundary recognition rate of a polished surface when measuring the polishing amount using a vision camera. Background Art

[0002] With the progress of the information society, the demand for display devices for displaying images has increased in various forms. Various types of display devices such as liquid crystal display (LCD) devices, plasma display panel (PDP) devices, quantum dot light emitting display (QLED), and organic light emitting display (OLED) devices have been widely used.

[0003] A display device includes two substrates, and a plurality of light emitting devices are disposed between the two substrates to display an image. In the display device, by performing a polishing process on the edge portion of each substrate in the substrates using a polishing machine, a curved surface or an inclined surface can be provided at the edge portion. In the polishing process, after polishing the edge portion of each substrate in the substrates, the polishing amount can be measured by a vision camera, and the defect of the product can be determined based on the result value.

[0004] The descriptions provided in the discussion of this related art section should not be assumed to be prior art merely because they are mentioned in or associated with the related art section. The discussion of the related art section may include information that describes one or more aspects of the subject technology, and the descriptions in this section do not limit the present invention. Summary of the Invention

[0005] The present disclosure aims to provide a display device that substantially eliminates one or more problems caused by the limitations and disadvantages of the prior art.

[0006] One aspect of the present disclosure aims to provide a display device capable of improving the boundary recognition rate of a polished surface when measuring the polishing amount using a vision camera.

[0007] Another aspect of the present disclosure aims to provide a display device capable of achieving ESG (Environment / Society / Governance) by reducing the generation of greenhouse gases caused by the manufacturing process.

[0008] The additional advantages and features of the present disclosure will be partially described below, and will be partially obvious to those of ordinary skill in the art after examining the following description, or can be learned from the practice of the present disclosure. Other benefits of the present disclosure can be realized and obtained through the structures specifically pointed out in the written description, claims, and drawings.

[0009] To achieve these and other advantages and in accordance with the purpose of the present disclosure, as embodied and broadly described herein, a display device is provided. The display device includes: a first substrate having a first ground surface at its edge; a second substrate facing the first substrate and having a second ground surface at the edge of the second substrate; a plurality of pixels disposed on one surface of the first substrate; a display area including the plurality of pixels; a non-display area disposed outside the display area; a dam disposed between the first substrate and the second substrate in the non-display area; and a first pattern disposed outside the dam.

[0010] It should be understood that the above summary and the following detailed description of the present disclosure are both exemplary and explanatory and are intended to provide further explanation of the claimed present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this application. The drawings illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. In the drawings:

[0012] Figure 1 is a perspective view schematically showing a display device according to one or more exemplary embodiments of the present disclosure;

[0013] Figure 2 is a plan view schematically showing a display panel according to one or more exemplary embodiments of the present disclosure;

[0014] Figure 3 is a plan view showing an example of sub-pixels disposed in a display panel according to one or more exemplary embodiments of the present disclosure;

[0015] Figure 4 is a plan view showing a first pattern and a second pattern disposed in a display panel according to one or more exemplary embodiments of the present disclosure;

[0016] Figure 5 is showing along Figure 4 an example cross-sectional view taken along line I-I' shown in

[0017] Figure 6 is showing along Figure 4 an example cross-sectional view taken along line II-II' shown in

[0018] Figure 7 is showing along Figure 4 an example cross-sectional view taken along line III-III' shown in

[0019] Figure 8 show an example of a bottom surface image acquired by a vision camera; and

[0020] Figure 9 show an example of a top surface image acquired by a vision camera.

[0021] Throughout the drawings and the detailed description, unless otherwise described, the same reference numerals should be understood to refer to the same elements, features, and structures. The relative dimensions and depictions of these elements may be exaggerated for clarity, illustration, and convenience. Detailed Description

[0022] Reference will now be made in detail to embodiments of the present disclosure, examples of which may be shown in the drawings. The progression of the described processing steps and / or operations is an example; however, the order of the steps and / or operations is not limited to the order set forth herein and may be changed as is known in the art, except for steps and / or operations that must occur in a specific order. The names of the corresponding elements used in the following description may be chosen solely for the convenience of writing the specification and may thus be different from the names used in actual products.

[0023] The advantages and features of the present disclosure and methods for realizing the same will be clarified by the following exemplary embodiments described with reference to the drawings. However, the present disclosure may be implemented in different forms and should not be construed as limited to the exemplary embodiments set forth herein. On the contrary, these exemplary embodiments are provided so that the present disclosure will be thorough and complete and will fully convey the scope of the present disclosure to those skilled in the art. Furthermore, the present disclosure is defined only by the scope of the claims.

[0024] The shapes, sizes, ratios, angles, quantities, etc. disclosed in the drawings used to describe the embodiments of the present disclosure are merely examples, and thus, the present disclosure is not limited to the details shown. The same reference numerals denote the same elements throughout the specification. In the following description, when it is determined that a detailed description of related known technologies unnecessarily obscures aspects of the present disclosure, the detailed description will be omitted.

[0025] In cases where "including", "having", "containing", "comprising", "constituting", "made of", "formed by", etc. described in the present disclosure are used, one or more additional parts may be added unless "only" is used. Unless otherwise indicated, terms in the singular form may include the plural form.

[0026] When interpreting an element, the element is also interpreted to include a range of errors even though not explicitly described.

[0027] When describing positional relationships, for example, when the positional relationship between two parts is described as "above", "on top of", "over", "below", "beneath", "under", and "beside", unless "exactly" or "directly" is used, one or more other parts can be provided between the two parts, that is to say, one or more other parts can be provided between the two parts. For example, when a component or layer is "provided" on another component or layer, a third layer or component can be interposed therebetween.

[0028] If it is mentioned that the first component is located on the second component, it does not mean that the first component is substantially above the second component in the figure. The upper and lower parts of the relevant object can change according to the orientation of the object. Therefore, in the figure or in the actual configuration, the situation where the first component is located on the second component includes the situation where the first component is located "below" the second component and the situation where the first component is located "above" the second component.

[0029] Terms such as "below", "beneath", "above", "over", etc. can be used herein to describe the relationship between the components shown in the drawings. It should be understood that these terms are spatially relative and are based on the orientation depicted in the drawings.

[0030] For expressions such as a component or layer "contacting", "overlapping", etc. with another component or layer, unless otherwise specified, the component or layer can not only directly contact, overlap, etc. with the other component or layer, but also indirectly contact, overlap, etc. with the other component or layer by providing or interposing one or more intermediate components or layers between the components or layers.

[0031] When describing temporal relationships, for example, when describing temporal precedence relationships such as "after", "subsequently", "next", "before", etc., it can include discontinuous situations, unless "exactly", "immediately" or "directly" is used.

[0032] It should be understood that although terms such as "first", "second", "A", "B", "(a)" and "(b)" can be used herein to describe various components, these components should not be limited by these terms. These terms are only used to distinguish one component from another. For example, without departing from the scope of the present disclosure, the first component can be referred to as the second component, and similarly, the second component can be referred to as the first component.

[0033] When a component is described as "linked", "coupled" or "connected" to another component, unless otherwise specified, the component can be directly connected to or indirectly connected to the other component. It should be understood that other components can be "interposed" between the components that can be connected or coupled to each other.

[0034] The term "at least one" should be understood to include any and all combinations of one or more of the related listed items. For example, the meaning of "at least one of the first item, the second item, and the third item" means combinations of two or more of the first item, the second item, and the third item and all items presented from the first item, the second item, or the third item.

[0035] The features of the various embodiments of the present disclosure can be partially or completely combined or combined with each other, and can interoperate with each other in various ways and be technically driven. The embodiments of the present disclosure can be executed independently of each other, or can be executed together in an interdependent relationship.

[0036] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the exemplary embodiments belong. It will also be understood that terms (such as those defined in a common dictionary) should be interpreted as having a meaning consistent with, for example, their meaning in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein. For example, the terms "component" or "unit" can be applied, for example, to a separate circuit or structure, an integrated circuit, a computing block of a circuit device, or any structure configured to perform the described function, as should be understood by one of ordinary skill in the art.

[0037] Hereinafter, with reference to the drawings, an example of a display device according to the present disclosure will be described. When assigning reference numerals to the components in each drawing, even if the same component is shown in different drawings, the same component can have the same reference numeral as much as possible. In addition, when it is determined that a detailed description of related known technologies unnecessarily obscures the gist of the present disclosure, the detailed description will be omitted.

[0038] Hereinafter, with reference to the drawings, one or more exemplary embodiments of the present disclosure will be described.

[0039] Figure 1 is a perspective view schematically showing a display device according to one or more exemplary embodiments of the present disclosure, and Figure 2 is a plan view schematically showing a display panel according to one or more exemplary embodiments of the present disclosure. Figure 3 is a plan view showing an example of sub-pixels provided in a display panel according to one or more exemplary embodiments of the present disclosure.

[0040] Hereinafter, the X-axis represents a direction parallel to the gate line, the Y-axis represents a direction parallel to the data line, and the Z-axis represents the height direction of the display device 100, but is not limited thereto. However, other variations are possible.

[0041] The display device 100 according to one or more exemplary embodiments of the present disclosure will be mainly described as an example of an organic light-emitting display device in which organic light-emitting diodes (OLEDs) are used to implement light-emitting elements. However, the display device 100 may be implemented as a liquid crystal display (LCD) device, a plasma display panel (PDP), a quantum dot light-emitting display (QLED) device, or an electrophoretic display device. However, the present disclosure is not limited thereto.

[0042] Referring to Figures 1 to 3 , the display device 100 according to one or more exemplary embodiments of the present disclosure may include a display panel 110, a source driver integrated circuit (hereinafter referred to as "IC") 210, a flexible film 220, a circuit board 230, a timing controller 240, and the like.

[0043] The display panel 110 includes a first substrate 111 and a second substrate 112 facing each other. The first substrate 111 and the second substrate 112 may be glass substrates, but are not limited thereto. The first substrate 111 and the second substrate 112 may be formed of other suitable materials such as transparent materials. For example, the first substrate 111 and the second substrate 112 may also include transparent plastics or flexible polymer films. For example, the flexible polymer film may be made of any one of the following: polyethylene terephthalate (PET), polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), polymethyl methacrylate (PMMA), polyethylene naphthalate (PEN), polyethersulfone (PES), cycloolefin copolymer (COC), triacetyl cellulose (TAC) film, polyvinyl alcohol (PVA) film, polyimide (PI) film, and polystyrene (PS), which are only examples and are not necessarily limited thereto. Hereinafter, as an example, the first substrate 111 is referred to as the first glass substrate, and the second substrate 112 is referred to as the second glass substrate. For example, the size of the first substrate 111 may be larger than the size of the second substrate 112.

[0044] The display panel 110 may be divided into a display area DA and a non-display area NDA. The display area DA includes a plurality of pixels P and displays an image. The non-display area NDA does not display an image. The non-display area NDA may refer to an area outside the display area DA. The non-display area NDA may also refer to an edge area or a border area.

[0045] Data lines DL, gate lines GL, and pixels P may be provided in the display area DA, and at least one gate driver 205 and a pad area PA in which pads PAD are provided may be provided in the non-display area NDA.

[0046] The data line DL may extend in a first direction (e.g., in the Y-axis direction) and may intersect with the gate line GL in the display area DA. The gate line GL may extend in a second direction (e.g., in the X-axis direction) in the display area DA.

[0047] As Figure 3 shown, the display area DA may include a transmissive area TA and a non-transmissive area NTA. The transmissive area is an area where most of the light incident from the outside is transmitted, and the non-transmissive area is an area where most of the light incident from the outside is not transmitted. For example, the transmissive area TA may be an area where the light transmittance is greater than α%, and the non-transmissive area NTA may be an area where the light transmittance is less than β%. In this example, α may be a value greater than β, and each of α and β may be a positive number. The display device 100 may allow viewing of an object or a background scene located at the rear surface of the display device 100 due to the transmissive area TA of the display panel 110.

[0048] The non-transmissive area NTA includes a plurality of pixels P to emit predetermined light to display an image. Each of the plurality of pixels P may include a plurality of sub-pixels, such as sub-pixels SP1, SP2, SP3, and SP4, but is not limited thereto. Each of the sub-pixels SP1, SP2, SP3, and SP4 may be any one of a first sub-pixel SP1 that emits red light, a second sub-pixel SP2 that emits green light, a third sub-pixel SP3 that emits blue light, and a fourth sub-pixel SP4 that emits white light, but is not limited thereto. Sub-pixels that emit light of other colors (such as cyan, magenta, or yellow, etc.) are also possible. The pixel P may include two or more sub-pixels, such as the sub-pixels SP1, SP2, SP3, and SP4 as Figure 3 shown, but is not limited thereto. For example, the pixel P may include a first sub-pixel SP1, a second sub-pixel SP2, a third sub-pixel SP3, and a fourth sub-pixel SP4, as Figure 3 shown. In addition, the arrangement order of the sub-pixels SP1, SP2, SP3, and SP4 may have different variations.

[0049] A plurality of pads may be provided in the pad area PA. Since the size of the first substrate 111 is larger than the size of the second substrate 112, a part of the first substrate 111 may be exposed and not covered by the second substrate 112. Pads such as power pads or data pads may be provided in the exposed part of the first substrate 111 that is not covered by the second substrate 112, but is not limited thereto.

[0050] The gate driver 205 can be a circuit for driving a plurality of gate lines GL. The gate driver 205 is connected to the gate lines to provide gate signals. The gate driver 205 can be formed in a non-display area NDA outside one or both sides of the display area DA in the type of in-panel gate driver GIP, but is not limited thereto. Alternatively, the gate driver 205 can be manufactured as a driving chip, mounted on a flexible film, and attached to the non-display area NDA outside one or both sides of the display area DA in the tape automated bonding TAB type.

[0051] The source driver IC 210 receives digital video data and a source control signal from the timing controller 240. The source driver IC 210 converts the digital video data into an analog data voltage according to the source control signal and then provides it to the data lines. If the source driver IC 210 is manufactured as a driving chip, it can be mounted on the flexible film 220 in the chip-on-film COF type or chip-on-plastic COP type.

[0052] The flexible film 220 can include lines connecting pads to the source driver IC 210 and lines connecting pads to the circuit board 230. The flexible film 220 can be attached to the pads using an anisotropic conductive film, thereby connecting the pads and the lines of the flexible film 220.

[0053] The circuit board 230 can be attached to the flexible film 220. The circuit board 230 can have a plurality of circuits implemented by driving chips mounted thereon. For example, the timing controller 240 can be mounted on the circuit board 230. The circuit board 230 can be a printed circuit board or a flexible printed circuit board.

[0054] The timing controller 240 receives digital video data and a timing signal from an external system board. The timing controller 240 generates a gate control signal for controlling the operation timing of the gate driver 205 and a source control signal for controlling the source driver IC 210 based on the timing signal. The timing controller 240 provides the gate control signal to the gate driver 205 and provides the source control signal to the source driver IC 210. For example, the gate driver 205 can provide a gate control signal to a plurality of gate lines GL according to the timing control of the timing controller 240.

[0055] Figure 4 is a plan view showing a first pattern and a second pattern provided in a display panel according to one or more exemplary embodiments of the present disclosure, Figure 5 is a view showing along Figure 4 an example cross-sectional view taken along line I-I' shown in Figure 6 is a view showing along Figure 4 an example cross-sectional view taken along line II-II' shown in Figure 7is a cross-sectional view showing an example taken along the line III-III’ shown in Figure 4 The cross-sectional view shows an example taken along line III-III’ shown in Figure 8 shows an example of a bottom surface image acquired by a vision camera, and Figure 9 shows an example of a top surface image acquired by a vision camera.

[0056] Referring to Figures 4 to 7 , a display panel 110 according to one or more exemplary embodiments of the present disclosure may include a display area DA and a non-display area NDA. The display area DA displays an image, while the non-display area NDA does not display an image. The display area DA is provided with pixels P that can display an image.

[0057] Each of the plurality of pixels P may include a first sub-pixel SP1, a second sub-pixel SP2, a third sub-pixel SP3, and a fourth sub-pixel SP4. For example, each of the sub-pixels SP1, SP2, SP3, and SP4 may be any one of a first sub-pixel SP1 that emits red light, a second sub-pixel SP2 that emits green light, a third sub-pixel SP3 that emits blue light, and a fourth sub-pixel SP4 that emits white light, but is not limited thereto. As Figures 5 to 7 shown, each of the first sub-pixel SP1, the second sub-pixel SP2, the third sub-pixel SP3, and the fourth sub-pixel SP4 may be provided with a circuit element T and a light-emitting device ED between a first glass substrate 111 and a second glass substrate 112. The light-emitting device ED may include a first electrode E1, an organic layer EL, and a second electrode E2.

[0058] The circuit element T is disposed on the first glass substrate 111. The circuit element T may include various signal lines, thin film transistors, and capacitors, etc. The circuit element T is provided for each of the sub-pixels SP1, SP2, SP3, and SP4. The signal lines may include a gate line for carrying a gate signal (which may be referred to as a scan signal), a data line for carrying a data signal (which may be referred to as a data voltage or an image signal), a driving power line, a common power line, and a reference line, etc. The thin film transistors may include a switching thin film transistor, a driving thin film transistor, and a sensing thin film transistor.

[0059] A planarization layer 120 may be provided on the circuit element T to planarize the step difference caused by the circuit element T. The planarization layer 120 may be provided in the display area DA. The planarization layer 120 may be provided in the non-transmissive area NTA and may not be provided in at least a part of the transmissive area TA. The planarization layer 120 may cause refraction of light when transmitting light, thereby reducing transparency. Therefore, the display panel 110 according to one or more exemplary embodiments of the present disclosure may increase transparency by removing a part of the planarization layer 120 in the transmissive area TA.

[0060] The planarization layer 120 may extend from the display area DA to a part of the non-display area NDA. Specifically, the planarization layer 120 may extend from the non-transmissive area NTA of the display area DA to a part of the non-display area NDA. The planarization layer 120 may be formed to cover the gate driver 205 disposed in the non-display area NDA.

[0061] The planarization layer 120 may be formed of an organic insulating material such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, or polyimide resin, but is not limited thereto.

[0062] The light-emitting device ED and the bank BN may be disposed on the planarization layer 120. The light-emitting device ED may include a first electrode E1, an organic layer EL, and a second electrode E2.

[0063] The first electrode E1 may be provided for each of the sub-pixels SP1, SP2, SP3, and SP4 on the planarization layer 120. The first electrode E1 may be electrically connected to the circuit element T, particularly the driving transistor DT. For example, the first electrode E1 may be electrically connected to the driving transistor DT through a contact hole CH penetrating the planarization layer 120. Specifically, the first electrode E1 may be connected to one of the source electrode and the drain electrode of the driving transistor DT through the contact hole CH penetrating the planarization layer 120. The bank BN is disposed between the adjacent first electrodes E1, and the adjacent first electrodes E1 may be electrically insulated from each other by the bank BN.

[0064] The first electrode E1 may be formed of a high reflectivity metal material such as a stacked structure of aluminum and titanium (Ti / Al / Ti), a stacked structure of aluminum and ITO (ITO / Al / ITO), an Ag alloy, a stacked structure of an Ag alloy and ITO (ITO / Ag alloy / ITO), a MoTi alloy, and a stacked structure of a MoTi alloy and ITO (ITO / MoTi alloy / ITO). The Ag alloy may be an alloy such as silver Ag, palladium Pd, copper Cu, etc., but is not limited thereto. The MoTi alloy may be an alloy of molybdenum Mo and titanium Ti. The first electrode E1 may be an anode electrode, but is not limited thereto.

[0065] The bank BN may be disposed on the planarization layer 120. The bank BN may be formed to cover the edge of the first electrode E1 and expose a part of the first electrode E1. Specifically, the bank BN may expose a part of the top surface of the first electrode E1. Therefore, the bank BN may prevent the problem of a decrease in light emission efficiency due to current concentration at the end of the first electrode E1.

[0066] The bank BN can define the light-emitting regions of each of the sub-pixels SP1, SP2, SP3, and SP4. The light-emitting region of each of the sub-pixels SP1, SP2, SP3, and SP4 represents a region where the first electrode E1, the organic layer EL, and the second electrode E2 are sequentially stacked so that holes from the first electrode E1 and electrons from the second electrode E2 are coupled to each other in the organic layer EL to emit light. In this example, the region where the bank BN is provided does not emit light and thus becomes a non-light-emitting region NEA, and the region where the bank BN is not provided and the first electrode E1 is exposed can be a light-emitting region.

[0067] The bank BN can be made of an insulating material containing a black material. The bank BN can be made of, for example, a transparent carbon-based mixture. Specifically, the bank BN can contain carbon black, but is not limited thereto. The bank BN can also be made of a transparent insulating material.

[0068] The organic layer EL can be provided on the first electrode E1. The organic layer EL can be a hole transport layer, a light-emitting layer, and an electron transport layer. In this example, when a voltage is applied to the first electrode E1 and the second electrode E2, holes and electrons move to the light-emitting layer through the hole transport layer and the electron transport layer, respectively, and combine with each other in the light-emitting layer to emit light.

[0069] In one or more exemplary embodiments, the organic layer EL can be a common layer formed in the sub-pixels SP1, SP2, SP3, and SP4. In this example, the light-emitting layer of the organic layer EL can be a white light-emitting layer that emits white light.

[0070] In another exemplary embodiment, the light-emitting layer of the organic layer EL can be formed for each of the sub-pixels SP1, SP2, SP3, and SP4. A first light-emitting layer that emits first color light can be formed in the first sub-pixel SP1, a second light-emitting layer that emits second color light can be formed in the second sub-pixel SP2, a third light-emitting layer that emits third color light can be formed in the third sub-pixel SP3, and a fourth light-emitting layer that emits fourth color light can be formed in the fourth sub-pixel SP4. For example, a red light-emitting layer that emits red light can be formed in the first sub-pixel SP1, a green light-emitting layer that emits green light can be formed in the second sub-pixel SP2, a blue light-emitting layer that emits blue light can be formed in the third sub-pixel SP3, and a white light-emitting layer that emits white light can be formed in the fourth sub-pixel SP4, but is not limited thereto.

[0071] The second electrode E2 can be disposed on the organic layer EL and the bank BN. The second electrode E2 can be formed of a transparent metal material TCO such as ITO or IZO that can transmit light, or a semi-transmissive conductive material such as magnesium Mg, silver Ag, or an alloy of magnesium Mg and silver Ag, but is not limited thereto. When the second electrode E2 is formed of a semi-transmissive conductive material, the light-emitting efficiency can be improved due to the presence of a microcavity. The second electrode E2 can be a cathode electrode, but is not limited thereto.

[0072] The encapsulation layer 130 can be disposed on the light-emitting device ED. The encapsulation layer 130 can be formed on the second electrode E2 to cover the second electrode E2. The encapsulation layer 130 is used to prevent oxygen or moisture from penetrating into the organic layer EL and the second electrode E2. To this end, the encapsulation layer 130 can include at least one inorganic layer. The encapsulation layer 130 can further include at least one organic layer. In this example, the encapsulation layer 130 can have an inorganic layer on its uppermost portion. The encapsulation layer 130 can cover the display area DA and can extend from the display area DA to a part of the non-display area NDA. The encapsulation layer 130 can be formed to cover the planarization layer 120, the bank BN, and the light-emitting device ED.

[0073] The inorganic layer provided in the encapsulation layer 130 can include an inorganic insulating material. For example, the inorganic layer provided in the encapsulation layer 130 can be formed of a silicon oxide layer SiOx, a silicon nitride layer SiNx, silicon oxynitride SiOxNy, and aluminum oxide, or a multilayer thereof, but is not limited thereto. The organic layer provided in the encapsulation layer 130 can be formed of an organic insulating material such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin, but is not limited thereto.

[0074] A cover layer CPL can be further provided between the light-emitting device ED and the encapsulation layer 130. The cover layer CPL can be disposed on the second electrode E2 to cover the second electrode E2. The cover layer CPL can improve the viewing angle characteristics and increase the external light-emitting efficiency. The cover layer CPL can include at least one of an inorganic material and an organic material having a light transmittance.

[0075] The color filter CF may be disposed on a surface of the second glass substrate 112 facing the first glass substrate 111. The color filter CF may be patterned for each of the sub-pixels SP1, SP2, SP3, and SP4. For example, the color filter CF may include a plurality of color filters, such as a first color filter, a second color filter, a third color filter, and a fourth color filter. The first color filter may be disposed to correspond to the first sub-pixel SP1 and may be a first color filter that transmits first color light, such as a red color filter that transmits red light. The second color filter may be disposed to correspond to the second sub-pixel SP2 and may be a second color filter that transmits second color light, such as a green color filter that transmits green light. The third color filter may be disposed to correspond to the third sub-pixel SP3 and may be a third color filter that transmits third color light, such as a blue color filter that transmits blue light. The fourth color filter may be disposed to correspond to the fourth sub-pixel SP4 and may be a fourth color filter that transmits fourth color light, such as a white color filter that transmits white light. The white color filter may be made of a transparent organic material that transmits white light, but is not limited thereto.

[0076] The black matrix BM may be disposed on a surface of the second glass substrate 112 facing the first glass substrate 111. The black matrix BM may be disposed between the color filters CF. The black matrix BM may be disposed between the sub-pixels SP1, SP2, SP3, and SP4 to prevent color mixing between adjacent sub-pixels SP1, SP2, SP3, and SP4. In addition, the black matrix BM may prevent light incident from the outside from being reflected by a plurality of signal lines disposed between the sub-pixels SP1, SP2, SP3, and SP4. The black matrix BM may include a light-absorbing material, for example, a black dye that absorbs all light in the visible light band.

[0077] The filler 140 may be disposed between the first glass substrate 111 including the light-emitting device ED and the second glass substrate 112 including the color filter CF and the black matrix BM. In this example, the filler 140 may use a thermosetting resin or a UV-curable resin and may be formed of an organic material having adhesive properties, but is not limited thereto. In one embodiment, the filler 140 may include a material that absorbs hydrogen, but is not limited thereto.

[0078] As Figure 5 shown, in the non-display area NDA, the first pattern PTN1 may be disposed on a surface of the second glass substrate 112 facing the first glass substrate 111. The barrier DAM, the first pattern PTN1, and the pad region PA provided with the pads PAD may be disposed in the non-display area NDA. In one or more exemplary embodiments, the second pattern PTN2 may be further disposed in the non-display area NDA.

[0079] The barrier DAM can be disposed between the first glass substrate 111 and the second glass substrate 112 in the non-display area NDA. The barrier DAM can be formed between the first glass substrate 111 and the second glass substrate 112 to contact each of the first glass substrate 111 and the second glass substrate 112, so that the first glass substrate 111 and the second glass substrate 112 can be joined to each other. Specifically, the barrier DAM can be disposed between the encapsulation layer 130 located on the first glass substrate 111 and the second glass substrate 112 in the non-display area NDA, but is not limited thereto.

[0080] The barrier DAM can be arranged to surround the display area DA while being spaced apart from the display area DA. The barrier DAM can be arranged to be spaced apart from the edges EG1, EG2, EG3, and EG4 of the second substrate 112. That is, the barrier DAM can be arranged to surround the display area DA between the edges EG1, EG2, EG3, and EG4 of the second substrate 112 and the display area DA.

[0081] The barrier DAM can be spaced apart from the display area DA, wherein the gate driver 205 is interposed between the barrier DAM and the display area DA in the non-display area NDA. In this example, the barrier DAM can be arranged not to overlap with the gate driver 205 provided in the non-display area NDA.

[0082] The barrier DAM can block the flow of the filler 140 so that the filler 140 does not flow out. The barrier DAM can have an inner surface IS and an outer space OS. The inner surface IS can contact the filler 140. The outer surface OS can be exposed to the outside and cannot contact the filler 140. The barrier DAM can be made of various materials known in the art, such as thermosetting resins or UV curable resins, but is not limited thereto.

[0083] The first pattern PTN1 can be disposed on one surface of the second glass substrate 112 facing the first glass substrate 111 in the non-display area NDA, but is not limited thereto. Alternatively, the first pattern PTN1 can be disposed on one surface of the first glass substrate 111 facing the second glass substrate 112. The first pattern PTN1 is disposed outside the barrier DAM in the non-display area NDA. That is, the first pattern PTN1 can be disposed between the edges EG1, EG2, EG3, and EG4 of the second glass substrate 112 and the barrier DAM. In this example, as Figure 5 shown, the first pattern PTN1 can be arranged to be adjacent to the edges EG1, EG2, EG3, and EG4 of the second glass substrate 112 and can be spaced apart from the barrier DAM.

[0084] In addition, the first pattern PTN1 may be set to overlap at least a part of the first grinding surface GE1 of the first glass substrate 111 and the second grinding surface GE2 of the second glass substrate 112. The first grinding surface GE1 of the first glass substrate 111 and the second grinding surface GE2 of the second glass substrate 112, which are set to face each other, may be formed by grinding the first glass substrate 111 and the second glass substrate 112 respectively using a grinding machine. Specifically, the first grinding surface GE1 of the first glass substrate 111 and the second grinding surface GE2 of the second glass substrate 112 may be formed by grinding the edges of the first glass substrate 111 and the second glass substrate 112 respectively using a grinding machine.

[0085] Specifically, the first grinding surface GE1 of the first glass substrate 111 may be provided at the first top surface US1, the first bottom surface BS1 and the edge of the first glass substrate 111. The first top surface US1 of the first glass substrate 111 may be the surface facing the second glass substrate 112 and may be the surface on which the light-emitting device ED is provided. The first bottom surface BS1 of the first glass substrate 111 may be the surface exposed to the outside. The first grinding surface GE1 of the first glass substrate 111 may be formed by grinding the edge of the first glass substrate 111 using a grinding machine. As Figures 5 to 7 shown, the first grinding surface GE1 of the first glass substrate 111 may be an inclined surface inclined from the first bottom surface BS1 toward the first top surface US1, but is not limited thereto. The first grinding surface GE1 may be a curved surface depending on the grinding type, but is not limited thereto.

[0086] The first grinding surface GE1 may be provided at the edge of at least one side of the first glass substrate 111. For example, the first grinding surface GE1 may be provided at the edges of all sides of the first glass substrate 111, but is not limited thereto.

[0087] A first edge surface SE1 may be further provided at the edge of the first glass substrate 111. The first edge surface SE1 may be provided between the first grinding surface GE1 and the first top surface US1 to connect the first grinding surface GE1 to the first top surface US1. The first edge surface SE1 may be provided at the outermost part of the first glass substrate 111. As Figures 5 to 7 shown, the first edge surface SE1 may extend vertically from the outermost part of the top surface US1 toward the first bottom surface BS1, but is not limited thereto. The first edge surface SE1 may extend obliquely from the outermost part of the first top surface US1 toward the first bottom surface BS1.

[0088] The first grinding surface GE1 can be disposed between the first edge surface SE1 and the first bottom surface BS1 to connect the first edge surface SE1 to the first bottom surface BS1. The first edge surface SE1 is not necessarily provided and can be omitted according to the design rules. In this example, when the first edge surface SE1 is omitted, the first grinding surface GE1 can connect the first top surface US1 to the first bottom surface BS1 between the first top surface US1 and the first bottom surface BS1 of the first glass substrate 111.

[0089] The second grinding surface GE2 of the second glass substrate 112 can be disposed at the second top surface US2, the second bottom surface BS2 and the edge of the second glass substrate 112. Different from the first glass substrate 111, the second top surface US2 of the second glass substrate 112 can be the surface exposed to the outside. The second bottom surface BS2 of the second glass substrate 112 can face the first glass substrate 111 and can be the surface on which the color filter CF and the black matrix BM are provided. The second grinding surface GE2 of the second glass substrate 112 is formed by grinding the edge of the second glass substrate 112 using a grinding machine. As Figures 5 to 7 shown, the second grinding surface GE2 of the second glass substrate 112 can be an inclined surface inclined from the second top surface US2 toward the second bottom surface BS2, but is not limited thereto. The second grinding surface GE2 can be a curved surface according to the grinding type, but is not limited thereto.

[0090] The second grinding surface GE2 can be disposed on the edge of at least one side of the second glass substrate 112. However, the second grinding surface GE2 cannot be disposed at the edge EG1 adjacent to the pad area PA. As Figure 4 shown, the second glass substrate 112 can include a first edge EG1 disposed adjacent to the pad area PA, a second edge EG2 disposed to face the first edge EG1, a third edge EG3 connecting the first edge EG1 and the second edge EG2, and a fourth edge EG4. Except for the first edge EG1, the second grinding surface GE2 can be disposed at at least one of the second edge EG2, the third edge EG3, and the fourth edge EG4 of the second glass substrate 112.

[0091] The first edge EG1 of the second glass substrate 112 can be set to expose the pad PAD disposed on the first glass substrate 111. When grinding the first edge EG1 of the second glass substrate 112, the exposed pad PAD may be damaged by the grinding machine. Therefore, in order to prevent the pad PAD from being damaged, the first edge EG1 of the second glass substrate 112 cannot be ground by the grinding machine. That is to say, the second grinding surface GE2 cannot be set at the edge EG1 adjacent to the pad region PA. For example, the second grinding surface GE2 can be set at all of the second edge EG2, the third edge EG3, and the fourth edge EG4 of the second glass substrate 112, but is not limited thereto. In addition, except for the first edge EG1 adjacent to the pad region PA, the second grinding surface GE2 can be set at any one of the second edge EG2, the third edge EG3, and the fourth edge EG4 of the second glass substrate 112. In this case, the first pattern PTN1 can be set at the second edge EG2, the third edge EG3, and the fourth edge EG4 except for the first edge EG1 of the second glass substrate 112. The first pattern PTN1 cannot be set between the pad region PA and the display region DA.

[0092] A second edge surface SE2 can be further provided at the edge of the second glass substrate 112. The second edge surface SE2 can connect the second grinding surface GE2 to the second bottom surface BS2 between the second grinding surface GE2 and the second bottom surface BS2. The second edge surface SE2 can be provided at the outermost part of the second glass substrate 112. As Figures 5 to 7 shown, the second edge surface SE2 can extend vertically from the outermost part of the second bottom surface BS2 toward the second top surface US2, but is not limited thereto. The second edge surface SE2 can extend obliquely from the outermost part of the second bottom surface BS2 toward the second top surface US2.

[0093] The second grinding surface GE2 can be set between the second edge surface SE2 and the second top surface US2 to connect the second edge surface SE2 and the second top surface US2. The second edge surface SE2 is not necessarily provided and can be omitted according to the design rules. In this example, when the second edge surface SE2 is omitted, the second grinding surface GE2 can connect the second top surface US2 and the second bottom surface BS2 of the second glass substrate 112.

[0094] The first pattern PTN1 may be disposed on at least one surface of the first glass substrate 111 and the second glass substrate 112. The first pattern PTN1 may be disposed on a surface of the first glass substrate 111 facing the second glass substrate 112. For example, the first pattern PTN1 may be disposed on the first top surface US1 of the first glass substrate 111 and may overlap at least a portion of the first grinding surface GE1 of the first glass substrate 111, but is not limited thereto. Alternatively, as Figure 5 shown, the first pattern PTN1 may be disposed on a surface of the second glass substrate 112 facing the first glass substrate 111. For example, the first pattern PTN1 may be disposed on the second bottom surface BS2 of the second glass substrate 112 and may overlap at least a portion of the second grinding surface GE2 of the second glass substrate 112.

[0095] In an exemplary embodiment, the first pattern PTN1 may include the same material as the black matrix BM, but is not limited thereto. The first pattern PTN1 may include a light-absorbing material such as the black matrix BM, for example, a black dye that absorbs all light in the visible light band. The first pattern PTN1 may be formed by the same process as the black matrix BM. In the exemplary embodiment where the first pattern PTN1 is formed by the same process as the black matrix BM, a separate process for forming the first pattern PTN1 is not required, and thus the first pattern PTN1 can be formed by a simple process.

[0096] The edge of the first pattern PTN1 may be disposed at the same position on a vertical line as the second edge surface SE2 of the second glass substrate. Specifically, as Figure 5 shown, the edge surface SE3 disposed at the outer edge of the first pattern PTN1 may be disposed at the same position on a vertical line as the second edge surface SE2 of the second glass substrate.

[0097] The first pattern PTN1 may be formed to have a predetermined width W3 from the same position on a vertical line with respect to the second edge surface SE2 of the second glass substrate toward the barrier DAM. The first grinding surface GE1 may be formed to have a predetermined width W1 from the same position on a vertical line with respect to the first edge surface SE1 of the first glass substrate toward the barrier DAM. The second grinding surface GE2 may be formed to have a predetermined width W2 from the same position on a vertical line with respect to the second edge surface SE2 of the second glass substrate toward the barrier DAM. In this example, a third width W3 of the first pattern PTN1 may be greater than a first width W1 of the first grinding surface GE1 of the first glass substrate 111 and a second width W2 of the second grinding surface GE2 of the second glass substrate 112. The first width W1 of the first grinding surface GE1 of the first glass substrate 111 and the second width W2 of the second grinding surface GE2 of the second glass substrate 112 may be the same as or different from each other. For example, the first width W1 of the first grinding surface GE1 of the first glass substrate 111 may be greater than the second width W2 of the second grinding surface GE2 of the second glass substrate 112, but is not limited thereto. In this way, even if the first width W1 of the first grinding surface GE1 of the first glass substrate 111 and the second width W2 of the second grinding surface GE2 of the second glass substrate 112 are different from each other, the third width W3 of the first pattern PTN1 may be greater than the second width W2 of the second grinding surface GE2 of the second glass substrate 112 and the first width W1 of the first grinding surface GE1 of the first glass substrate 111.

[0098] A display panel 110 according to one or more exemplary embodiments of the present disclosure may measure a grinding amount of each of the first grinding surface GE1 of the first glass substrate 111 and the second grinding surface GE2 of the second glass substrate 112 by using the first pattern PTN1. Generally, the grinding amount may be measured by using a vision camera system after a grinding process. The vision camera system may capture an edge region including the first grinding surface GE1 of the first glass substrate 111 and identify a boundary of the first grinding surface GE1 in the captured image. The vision camera system may measure the grinding amount based on the identified boundary of the first grinding surface GE1. For example, the vision camera system may determine the grinding amount based on the first width W1 of the first grinding surface GE1.

[0099] For example, after arranging the vision camera under the display panel 110, the vision camera system may obtain a bottom surface image as shown in Figure 8 by capturing an edge region including the first grinding surface GE1 of the first glass substrate 111. The vision camera system may identify a boundary having a large brightness difference in the bottom surface image as the boundary of the first grinding surface GE1. The vision camera system may be as shown in Figure 8In the bottom surface image shown, each of the first boundary GB1a and the second boundary GB1b having a large luminance difference is recognized as a boundary of the first grinding surface GE1. According to the shape of the first grinding surface GE1, the first boundary GB1a may be a boundary of the first glass substrate 111 and a boundary of the first grinding surface GE1. The vision camera system may determine the grinding amount based on the distance between the first boundary GB1a and the second boundary GB1b, that is, the first width W1 of the first grinding surface GE1.

[0100] In addition, the vision camera system may capture an edge region of the second grinding surface GE2 including the second glass substrate 112 and recognize a boundary of the second grinding surface GE2 of the second glass substrate 112 in the captured image. The vision camera system may measure the grinding amount based on the recognized boundary of the second grinding surface GE2. For example, the vision camera system may determine the grinding amount based on the second width W2 of the second grinding surface GE2.

[0101] For example, after arranging the vision camera on the display panel 110, the vision camera system may obtain a top surface image as shown by capturing an edge region of the second grinding surface GE2 including the second glass substrate 112. Figure 9 The vision camera system may recognize a boundary having a large luminance difference in the top surface image as a boundary of the second grinding surface GE2. The vision camera system may recognize each of the first boundary GB2a and the second boundary GB2b having a large luminance difference in the top surface image as shown by Figure 9 a boundary of the second grinding surface GE2. According to the shape of the second grinding surface GE2, the first boundary GB2a may be a boundary of the second glass substrate 112 and a boundary of the second grinding surface GE2. The vision camera system may determine the grinding amount based on the distance between the first boundary GB2a and the second boundary GB2b, that is, the second width W2 of the second grinding surface GE2.

[0102] In the display panel 110 according to one or more exemplary embodiments of the present disclosure, the first pattern PTN1 may be formed to overlap the first grinding surface GE1 of the first glass substrate 111 and the second grinding surface GE2 of the second glass substrate 112, so that the boundary of each of the first grinding surface GE1 of the first glass substrate 111 and the second grinding surface GE2 of the second glass substrate 112 can be more clearly shown in the image obtained by the vision camera.

[0103] In the display panel 110 according to one or more exemplary embodiments of the present disclosure, in order to prevent another boundary from appearing within the first grinding surface GE1 in the bottom surface image obtained by the vision camera, the first pattern PTN1 may include a third width W3 that is greater than the first width W1 of the first grinding surface GE1. When the first pattern PTN1 has a width smaller than the first width W1 of the first grinding surface GE1, within the first grinding surface GE1 in the bottom surface image obtained by the vision camera, there may be a boundary between the region where the first pattern PTN1 overlaps with the first grinding surface GE1 and the region where the first pattern PTN1 does not overlap with the first grinding surface GE1. Therefore, the vision camera system may misidentify the boundary between the region where the first pattern PTN1 overlaps with the first grinding surface GE1 and the region where the first pattern PTN1 does not overlap with the first grinding surface GE1 as the boundary of the first grinding surface GE1. To prevent this, the display panel 110 according to one or more exemplary embodiments of the present disclosure may include the first pattern PTN1 having a third width W3 that is greater than the first width W1 of the first grinding surface GE1. Therefore, there is no boundary within the first grinding surface GE1 in the bottom surface image obtained by the vision camera.

[0104] In the display panel 110 according to one or more exemplary embodiments of the present disclosure, in order to prevent another boundary from appearing within the second grinding surface GE2 in the top surface image obtained by the vision camera, the first pattern PTN1 may include a third width W3 that is greater than the second width W2 of the second grinding surface GE2. When the first pattern PTN1 has a width smaller than the second width W2 of the second grinding surface GE2, within the second grinding surface GE2 in the top surface image obtained by the vision camera, there may be a boundary between the region where the first pattern PTN1 overlaps with the second grinding surface GE2 and the region where the first pattern PTN1 does not overlap with the second grinding surface GE2. Therefore, the vision camera system may misidentify the boundary between the region where the first pattern PTN1 overlaps with the second grinding surface GE2 and the region where the first pattern PTN1 does not overlap with the second grinding surface GE2 as the boundary of the second grinding surface GE2. To prevent this, the display panel 110 according to one or more exemplary embodiments of the present disclosure may include the first pattern PTN1 having a third width W3 that is greater than the second width W2 of the second grinding surface GE2. Therefore, there is no boundary within the second grinding surface GE2 in the bottom surface image obtained by the vision camera.

[0105] In addition, in the display panel 110 according to one or more exemplary embodiments of the present disclosure, the edge surface SE3 provided at the outer edge of the first pattern PTN1 may be provided at the same position on a vertical line as the second edge surface SE2 of the second glass substrate 112. When the edge surface SE3 of the first pattern PTN1 is set to be closer to the barrier DAM than the second edge surface SE2 of the second glass substrate 112, the top surface image obtained by the vision camera may include a boundary between an area where the second grinding surface GE2 overlaps with the first pattern PTN1 and an area where the second grinding surface GE2 does not overlap with the first pattern PTN1. Therefore, the vision camera system may misidentify the boundary between the area where the second grinding surface GE2 overlaps with the first pattern PTN1 and the area where the second grinding surface GE2 does not overlap with the first pattern PTN1 as the boundary of the second grinding surface GE2. To prevent this, in the display panel 110 according to one or more exemplary embodiments of the present disclosure, the edge surface SE3 of the first pattern PTN1 may be set at the same position on a vertical line as the second edge surface SE2 of the second glass substrate 112. Therefore, there is no boundary within the second grinding surface GE2 in the top surface image obtained by the vision camera.

[0106] In addition, in the display panel 110 according to one or more exemplary embodiments of the present disclosure, the first pattern PTN1 may be set to be spaced apart from the barrier DAM such that the boundary of the first pattern PTN1 can be recognized in the image obtained by the vision camera. When the first pattern PTN1 overlaps with the barrier DAM, in the image obtained by the vision camera, the area where the first pattern PTN1 and the barrier DAM are provided may be dark, and the area where the first pattern PTN1 overlaps with the barrier DAM may be relatively darker. Therefore, the vision camera system cannot clearly recognize the boundary between the first pattern PTN1 and the barrier DAM, and may misidentify a relatively dark area, such as the area where the first pattern PTN1 overlaps with the barrier DAM, as the boundary of the first grinding surface GE1 of the first glass substrate 111 or the boundary of the second grinding surface GE2 of the second glass substrate 112.

[0107] To prevent this, in the display panel 110 according to one or more exemplary embodiments of the present disclosure, the first pattern PTN1 may be set to be spaced apart from the barrier DAM. In this example, in the image acquired by the vision camera, since the area where the first pattern PTN1 is spaced apart from the barrier DAM may be brighter, the boundary between the first pattern PTN1 and the barrier DAM may be clearly shown. The vision camera system may identify the boundary of the first pattern PTN1, and may identify the boundary of the first grinding surface GE1 of the first glass substrate 111 and the boundary of the second grinding surface GE2 of the second glass substrate 112 within the first pattern PTN1.

[0108] In the display panel 110 according to one or more exemplary embodiments of the present disclosure, the first pattern PTN1 may have a third width W3 greater than the first width W1 of the first grinding surface GE1, and the first pattern PTN1 may have a third width W3 greater than the second width W2 of the second grinding surface GE2. In addition, in the display panel 110 according to one or more exemplary embodiments of the present disclosure, the edge surface SE3 of the first pattern PTN1 may be set at the same position on a vertical line as the second edge surface SE2 of the second glass substrate 112. In addition, in the display panel 110 according to one or more exemplary embodiments of the present disclosure, the first pattern PTN1 may be set to be spaced apart from the barrier DAM. However, the present disclosure is not limited thereto.

[0109] Therefore, since the display panel 110 according to one or more exemplary embodiments of the present disclosure includes the first pattern PTN1, when measuring the grinding and polishing amount by the vision camera system, the boundary of the first grinding surface GE1 of the first glass substrate 111 and the boundary of the second grinding surface GE2 of the second glass substrate 112 can be accurately identified. The display panel 110 according to one or more exemplary embodiments of the present disclosure can reduce the misidentification rate of the boundary of the first grinding surface GE1 of the first glass substrate 111 and the boundary of the second grinding surface GE2 of the second glass substrate 112, and further can reduce the defect processing due to misidentification. In the display panel 110 according to one or more exemplary embodiments of the present disclosure, since the product defect rate is reduced, the manufacturing process cost can be reduced and the manufacturing process time can be shortened, thereby reducing the production energy. In addition, in the display panel 110 according to one or more exemplary embodiments of the present disclosure, the greenhouse gas generated by the manufacturing process can be reduced, thereby achieving ESG (Environment / Society / Governance).

[0110] The first pattern PTN1 may be disposed at the edge of at least one side of the first glass substrate 111 or the second glass substrate 112. As described above, the first pattern PTN1 can be used to measure the grinding amount of the first grinding surface GE1 of the first glass substrate 111 and the second grinding surface GE2 of the second glass substrate 112, so it can be disposed at the edge of the first grinding surface GE1 of the first glass substrate 111 and the second grinding surface GE2 of the second glass substrate 112.

[0111] As Figure 5 shown, the first pattern PTN1 can be disposed on one surface of the second glass substrate 112, and can be disposed at the edge of at least one side of the second grinding surface GE2. For example, except for the first edge EG1 adjacent to the pad region PA, the second grinding surface GE2 of the second glass substrate 112 can be disposed at the second edge EG2, the third edge EG3, and the fourth edge EG4, but is not limited thereto. In addition, except for the first edge EG1, the second grinding surface GE2 of the second glass substrate 112 can be disposed at any one of the second edge EG2, the third edge EG3, and the fourth edge EG4 of the second glass substrate 112. In this case, except for the first edge EG1 of the second glass substrate 112, the first pattern PTN1 can be disposed at the second edge EG2, the third edge EG3, and the fourth edge EG4. The first pattern PTN1 cannot be disposed between the pad region PA and the display region DA.

[0112] A plurality of first patterns PTN1 can be disposed to be spaced apart from each other along the edge of at least one side of the first glass substrate 111 or the second glass substrate 112. The first pattern PTN1 can be formed as a pattern having a predetermined size within the area to be captured by the vision camera. As Figure 4 shown, a plurality of first patterns PTN1 can be disposed at one side edge, and a plurality of first patterns PTN1 can be disposed to be spaced apart from each other. For example, a plurality of first patterns PTN1 can be disposed to be spaced apart from each other along each of the second edge EG2, the third edge EG3, and the fourth edge EG4 of the second glass substrate 112.

[0113] The display panel 110 according to one or more exemplary embodiments of the present disclosure may further include a second pattern PTN2 disposed between the plurality of first patterns PTN1.

[0114] The second pattern PTN2 can be disposed outside the barrier DAM in the same manner as the plurality of first patterns PTN1 to block the flow of the barrier DAM so that the barrier DAM does not flow to the outside or spread to the area where the plurality of first patterns PTN1 are formed.

[0115] Like the plurality of first patterns PTN1, the plurality of second patterns PTN2 can be arranged to be spaced apart from each other along the edge of at least one side of the first glass substrate 111 or the second glass substrate 112. In this example, the plurality of first patterns PTN1 and the plurality of second patterns PTN2 can be alternately arranged along the edge of at least one side of the first glass substrate 111 or the second glass substrate 112.

[0116] As an example, as Figure 6 and Figure 7 shown, the second pattern PTN2 can be arranged on one surface of the second glass substrate 112 like the first pattern PTN1, and can be arranged at the edge of at least one side of the second glass substrate 112. However, the first pattern PTN1 cannot be arranged at the first edge EG1 of the second glass substrate 112, but the second pattern PTN2 can be arranged at the first edge EG1 of the second glass substrate 112. The second pattern PTN2 can be arranged at the first edge EG1, the second edge EG2, the third edge EG3, and the fourth edge EG4 of the second glass substrate 112, but is not limited thereto. Alternatively, the second pattern PTN2 can be arranged at any one of the first edge EG1, the second edge EG2, the third edge EG3, and the fourth edge EG4 of the second glass substrate 112. That is, the first pattern PTN1 cannot be arranged between the pad region PA and the display region DA, while the second pattern PTN2 can be arranged between the pad region PA and the display region DA. The second pattern PTN2 can be extended longer along the first edge EG1 to block the flow of the dam DAM, so that the dam DAM does not spread to the pad region PA.

[0117] The second pattern PTN2 can have a fourth width W4 smaller than the third width W3 of the first pattern PTN1. As Figure 6 and Figure 7 shown, compared with the second edge surface SE2 of the second glass substrate 112, the edge surface SE4 arranged at the outer edge of the second pattern PTN2 can be positioned inwardly toward the dam DAM. That is, the second pattern PTN2 can be formed to have a predetermined width W4 toward the dam DAM at a position inwardly toward the dam DAM than the second edge surface SE2 of the second glass substrate 112. In this example, the fourth width W4 of the second pattern PTN2 can be smaller than the third width W3 of the first pattern PTN1.

[0118] In one embodiment, as Figure 4 shown, the second pattern PTN2 can include a plurality of sub-patterns SUBP between two adjacent first patterns PTN1. In this example, as Figure 6 and Figure 7As shown, each of the plurality of sub-patterns SUBP disposed between two adjacent first patterns PTN1 has a fifth width W5 and can be spaced apart from the barrier DAM in the outward direction. In the display panel 110, an uneven surface can be formed by the plurality of sub-patterns SUBP spaced apart from the barrier DAM in the outward direction, and the flow of the barrier DAM can be more effectively blocked by the uneven surface.

[0119] In addition, the second pattern PTN2 can be disposed closer to the barrier DAM than the first pattern PTN1. Specifically, the first pattern PTN1 can have a first separation distance S1 from the barrier DAM. The second pattern PTN2 can have a second separation distance S2 less than the first separation distance S1 from the barrier DAM. Therefore, in the display panel 110 according to one or more exemplary embodiments of the present disclosure, the flow of the barrier DAM can be blocked by the second pattern PTN2 before the barrier DAM spreads to the region where the first pattern PTN1 is formed.

[0120] In one embodiment, like the first pattern PTN1, the second pattern PTN2 can include the same material as the black matrix BM. Like the black matrix BM, the second pattern PTN2 can include a light-absorbing material, for example, a black dye that absorbs all light in the visible light band. The second pattern PTN2 can be formed by the same process as the black matrix BM. In this example, since the first pattern PTN1 and the second pattern PTN2 can be formed by the same process as the black matrix BM, the first pattern PTN1 and the second pattern PTN2 can be formed without a separate additional process.

[0121] The above embodiments of the present disclosure will be briefly described below.

[0122] A display device according to an exemplary embodiment of the present disclosure may include: a first substrate having a first polished surface at its edge; a second substrate facing the first substrate and having a second polished surface at the edge of the second substrate; a plurality of pixels disposed on one surface of the first substrate; a display area including the plurality of pixels; a non-display area disposed outside the display area; a barrier disposed between the first substrate and the second substrate in the non-display area; and a first pattern disposed outside the barrier.

[0123] In the present disclosure, by including the first pattern, the boundary of the polished surface of each glass substrate can be clearly displayed in the image obtained by the vision camera.

[0124] In addition, in the present disclosure, it is possible to prevent the boundaries of the polished surfaces of each of the glass substrates from being misidentified, thereby reducing the misidentification rate of the boundaries of the polished surfaces and reducing defect handling due to misidentification. Further, in the present disclosure, since the product defect rate is reduced, the manufacturing process cost can be reduced and the manufacturing process time can be shortened, thereby reducing production energy. Furthermore, in the present disclosure, greenhouse gases generated due to the manufacturing process can be reduced, thereby achieving ESG (Environment / Society / Governance).

[0125] In addition, in the present disclosure, since the second pattern can be disposed between the first patterns, the flow of the barrier can be blocked, so that the barrier does not flow outward or spread to the region where a plurality of first patterns are provided.

[0126] Moreover, in the present disclosure, the first pattern and the second pattern can be formed by the same process as the black matrix. Therefore, in the present disclosure, the first pattern and the second pattern can be formed without a separate additional process.

[0127] The above-described features, structures, and effects of the present disclosure are included in at least one embodiment of the present disclosure, but are not limited to only one embodiment. In addition, the features, structures, and effects described in at least one embodiment of the present disclosure can be achieved by those skilled in the art through combinations or modifications of other embodiments. Therefore, the content associated with the combinations and modifications should be construed as being within the scope of the present disclosure.

[0128] It will be apparent to those skilled in the art that various modifications and variations can be made in the present disclosure without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is intended to cover modifications and variations of the present disclosure.

[0129] The above-described various embodiments can be combined to provide further embodiments. Based on the above detailed description, these and other changes can be made to the embodiments. Generally, in the appended claims, the terms used should not be construed as limiting the claims to the specific embodiments disclosed in the specification and claims, but should be construed as including all possible embodiments and the full scope of equivalents given by these claims. Therefore, the claims are not limited by the present disclosure.

[0130] Cross-reference to Related Applications

[0131] This application claims the priority and benefit of Korean Patent Application No. 10-2023-0192305, filed in Korea on December 27, 2023, the entire contents of which are hereby incorporated by reference in their entirety for all purposes as if fully set forth herein.

Claims

1. A display device, comprising: a first substrate having a first ground surface at an edge of the first substrate; a second substrate facing the first substrate and having a second grinding surface at an edge of the second substrate; a plurality of pixels, the plurality of pixels being arranged on a surface of the first substrate; a display area, the display area including the plurality of pixels; a non-display area, the non-display area being arranged outside the display area; a barrier disposed between the first substrate and the second substrate in the non-display area; as well as A first pattern is disposed outside the barrier.

2. The display device according to claim 1, wherein: The first pattern is spaced apart from the barrier.

3. The display device according to claim 1, wherein: The first pattern overlaps at least a portion of the first grinding surface and at least a portion of the second grinding surface.

4. The display device according to claim 1, wherein: The first pattern has a third width greater than a first width of the first grinding surface and a second width of the second grinding surface.

5. The display device according to claim 4, wherein: The first width of the first grinding surface is different from the second width of the second grinding surface.

6. The display device according to claim 1, wherein: A plurality of first patterns are disposed to be spaced apart from each other along an edge of at least one side of the first substrate or the second substrate.

7. The display device according to claim 1, wherein: The first pattern is disposed on one surface of the second substrate.

8. The display device according to claim 7, wherein: The second substrate includes an edge surface disposed at the edge, and The first pattern includes an edge surface disposed at the same position on a vertical line as the edge surface of the second substrate.

9. The display device according to claim 1, further comprising a pad area provided with a plurality of pads, in, The first pattern is not disposed between the display area and the pad area. 10 . The display device according to claim 1 , further comprising a second pattern disposed outside the barrier, the second pattern being disposed between adjacent first patterns.

11. The display device according to claim 10, wherein: The second pattern has a fourth width smaller than a third width of the first pattern.

12. The display device according to claim 10, wherein: The second substrate includes an edge surface disposed at the edge, and The second pattern has an edge surface disposed at a position inwardly toward the barrier than the edge surface of the second substrate.

13. The display device according to claim 10, wherein: The second pattern is disposed closer to the barrier than the first pattern.

14. The display device according to claim 10, wherein: The second pattern is arranged along an edge of at least one side of the second substrate, and Wherein, the second pattern is arranged to be spaced apart from the first pattern.

15. The display device according to claim 10, wherein: The second pattern includes a plurality of sub-patterns disposed between adjacent first patterns.

16. The display device according to claim 10, further comprising a pad area provided with a plurality of pads, in, The second pattern is disposed between the display area and the pad area.

17. The display device according to claim 1, further comprising: a color filter disposed on one surface of the second substrate; as well as a black matrix disposed between the color filters on the one surface of the second substrate, The first pattern is formed on the one surface of the second substrate from the same material as the black matrix.

18. The display device according to claim 1, further comprising a gate driver, the gate driver being disposed on one surface of the first substrate and disposed on at least one side of the display area, in, The gate driver is disposed between the barrier and the display area.

19. The display device according to claim 1, wherein: The display area includes a light emitting area where a plurality of light emitting devices are disposed and a transmission area for transmitting external light.

20. The display device according to claim 1, wherein: The first substrate includes a first glass substrate, and the second substrate includes a second glass substrate.

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