Display device

Abstract

The invention relates to a display device. An exemplary embodiment of the inventive concept provides a display device including: a display area displaying an image; a peripheral area disposed outside the display area; an aperture area disposed within the display area; a hole crack detection line disposed adjacent to the hole region to surround the hole region and having a first end portion and a second end portion separated from the first end portion; a first detection line extending from the peripheral region and connected to the hole crack detection line to constitute a first closed circuit; a second detection line extending from the peripheral region and connected to the hole crack detection line to constitute a second closed circuit; and a circuit portion connected to the first detection line and the second detection line.

Description

[0001] This application is a divisional application of the patent application with application number 201911132627.1 filed on November 15, 2019 and titled “Display device and inspection method of the display device”. Technical Field

[0002] Embodiments of the inventive concept relate to a display device and an inspection method of the display device, and more particularly, to a display device including a display panel having a hole formed therein and an inspection method of the display device. Background Art

[0003] A display device such as a liquid crystal display (LCD) or an organic light emitting diode display (OLED) includes a display panel including a plurality of pixels capable of displaying an image and a plurality of signal lines. Each pixel may include a pixel electrode for receiving a data signal, and the pixel electrode may be connected to at least one transistor to receive the data signal. The display panel may include a plurality of layers stacked in the display panel.

[0004] When the display panel is impacted, cracks may be formed on the substrate or on the layers stacked on the substrate. The cracks may grow or spread to other layers or other areas over time, which may cause the display panel to deteriorate. For example, signal lines such as data lines or gate lines may be disconnected by cracks or may increase resistance, and moisture may penetrate into the display panel through the cracks, thereby reducing component reliability. As a result, various problems such as non-luminescence, erroneous luminescence, etc. of the pixels of the display panel may occur.

[0005] Specifically, a recently developed flexible display may be bent or folded during manufacturing or use, and even when fine cracks exist in a substrate or stacked layers of a display panel, the fine cracks may develop into larger cracks due to the bending or folding of the display panel.

[0006] The above information disclosed in this Background section is only for enhancement of understanding of the background of the inventive concept and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art. Summary of the invention

[0007] Devices such as a camera, a flash, a speaker, and an optical sensor that are arranged in the non-display area may be arranged in the display area so as to minimize the non-display area on the front side of the display device and maximize the display area to the entire front side. For example, a hole may be formed in the display panel by punching, and a camera, a flash, a speaker, a photosensitive sensor, etc. may be installed in the hole. Cracks may occur during the process of forming the hole in the display panel, or cracks may occur in a portion exposed by the hole.

[0008] The present inventive concept has been made in order to provide a display device capable of testing cracks that may occur in a display panel having a hole formed therein and an inspection method of the display device.

[0009] An exemplary embodiment of the present invention provides a display device, comprising: a display area that displays an image; a peripheral area arranged outside the display area; a hole area arranged within the display area; a hole crack detection line, which is arranged adjacent to the hole area to surround the hole area and has a first end and a second end separated from the first end; a first detection line, which extends from the peripheral area and is connected to the hole crack detection line to form a first closed circuit; a second detection line, which extends from the peripheral area and is connected to the hole crack detection line to form a second closed circuit; and a circuit portion connected to the first detection line and the second detection line.

[0010] The first detection line may include: a first detection transmission line, which has a first end connected to the circuit part and a second end connected to the first end of the hole crack detection line; and a first detection receiving line, which has a first end connected to the circuit part and a second end connected to the second end of the hole crack detection line, wherein the second detection line may include: a second detection transmission line, which has a first end connected to the circuit part and a second end connected to the first end of the hole crack detection line, and a second detection receiving line, which has a first end connected to the circuit part and a second end connected to the second end of the hole crack detection line.

[0011] The first closed circuit may include a first detection transmission line, a hole crack detection line, and a first detection reception line, and the second closed circuit may include a second detection transmission line, a hole crack detection line, and a second detection reception line.

[0012] When both the first closed circuit and the second closed circuit are determined to be defective, the circuit portion may determine a hole crack defect in which a crack occurs in the hole crack detection line.

[0013] The first detection line may include: a first detection transmission line, which has a first end connected to the circuit part and a second end connected to the first end of the hole crack detection line; and a first detection receiving line, which has a first end connected to the circuit part and a second end connected to the second end of the hole crack detection line, wherein the second detection line may include: a second detection transmission line, which has a first end connected to the circuit part and a second end connected to the second end of the hole crack detection line, and a second detection receiving line, which has a first end connected to the circuit part and a second end connected to the first end of the hole crack detection line.

[0014] The display device may further include: a third detection line, which extends in parallel with the first detection line in the peripheral area and has opposite ends connected to the circuit part to form a third closed circuit; and a fourth detection line, which extends in parallel with the second detection line in the peripheral area and has opposite ends connected to the circuit part to form a fourth closed circuit.

[0015] The first detection line may include: a first detection transmission line, the first detection transmission line having a first end connected to the circuit part and a second end connected to the second end of the hole crack detection line; and a first detection receiving line, the first detection receiving line having a first end connected to the circuit part and a second end connected to the second end of the hole crack detection line, wherein the second detection line may include: a second detection transmission line, the second detection transmission line having a first end connected to the circuit part and a second end connected to the first end of the hole crack detection line, and a second detection receiving line, the second detection receiving line having a first end connected to the circuit part and a second end connected to the first end of the hole crack detection line.

[0016] The first closed circuit may include a first detection transmission line and a first detection reception line, and the second closed circuit may include a second detection transmission line and a second detection reception line.

[0017] The first detection transmission line, the hole crack detection line, and the second detection receiving line may constitute a third closed circuit.

[0018] When the third closed circuit is determined to be defective, the circuit portion may determine a hole crack defect in which a crack occurs in the hole crack detection line.

[0019] An exemplary embodiment of the present invention provides a display device, including: a substrate, the substrate including a display area for displaying an image and a peripheral area arranged outside the display area; a hole area arranged in the display area; a first detection line constituting a first closed circuit and extending to surround a first edge of the hole area, the first closed circuit extending along the first edge of the display area in the peripheral area, the first detection line including at least two first lines extending substantially parallel to each other, and ends of the at least two first lines are connected to each other in a first area adjacent to the hole area; a second detection line constituting a second closed circuit and extending to surround a second edge of the hole area opposite to the first edge of the hole area, the second closed circuit extending along the second edge of the display area in the peripheral area, the second detection line including at least two second lines extending substantially parallel to each other, and ends of the at least two second lines are connected to each other in a second area adjacent to the hole area; and a circuit portion connected to opposite ends of the first detection line and opposite ends of the second detection line.

[0020] The hole region may be a zone where a hole is formed by removing a portion of the substrate and an element disposed on the portion of the substrate.

[0021] The first detection line and the second detection line may be physically separated and face each other, with the hole area interposed between the first detection line and the second detection line.

[0022] The circuit portion can detect crack defects at the first edge of the hole area by outputting a first detection signal to a first detection line and receiving a first closed circuit signal fed back, and can detect crack defects at the second edge of the hole area by outputting a second detection signal to a second detection line and receiving a second closed circuit signal fed back.

[0023] An exemplary embodiment of the present invention provides an inspection method for a display device, comprising: outputting a first detection signal to a first detection line connected to a hole crack detection line and constituting a first closed circuit, the hole crack detection line being arranged adjacent to a hole area arranged in a display area to surround the hole area; outputting a second detection signal to a second detection line connected to the hole crack detection line and constituting a second closed circuit; and determining a hole crack defect in which a crack occurs in the hole crack detection line based on a first closed circuit signal received through the first closed circuit and a second closed circuit signal received through the second closed circuit.

[0024] The first closed circuit may include a hole crack detection line, and the second closed circuit may include a hole crack detection line.

[0025] When it is determined by the first closed circuit signal that the first closed circuit is defective and it is determined by the second closed circuit signal that the second closed circuit is defective, a hole crack defect may be determined.

[0026] The first closed circuit may include a first detection transmission line and a first detection reception line connected to the second end of the hole crack detection line, and the second closed circuit may include a second detection transmission line and a second detection reception line connected to the first end of the hole crack detection line.

[0027] The inspection method may further include outputting a first inspection signal to a first inspection transmission line, and receiving a third closed circuit signal through a third closed circuit formed by the first inspection transmission line, the hole crack inspection line, and the second inspection reception line.

[0028] When the first closed circuit and the second closed circuit are determined to be normal and the third closed circuit is determined to be defective, a hole crack defect may be determined.

[0029] According to exemplary embodiments, a crack in a hole region in a display panel having a hole formed thereon may be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The diagram illustrates a top plan view of a display device according to an exemplary embodiment of the inventive concept.

[0031] Figure 2 The diagram follows Figure 1 A cross-sectional view of the display device taken along line II-II'.

[0032] Figure 3 A flowchart illustrating an inspection method of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0033] Figure 4 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0034] Figure 5 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0035] Figure 6 The diagram follows Figure 5 A cross-sectional view of the display device taken along line VI-VI'.

[0036] Figure 7 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0037] Figure 8 A flowchart illustrating an inspection method of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0038] Fig. 9 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0039] Fig.10 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0040] Fig.11 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0041] Fig.12 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0042] Fig.13 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0043] Fig.14 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0044] Fig.15 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0045] Fig.16 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0046] Fig.17 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0047] Fig.18 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated. DETAILED DESCRIPTION

[0048] Embodiments of the inventive concept will be described more fully below with reference to the accompanying drawings in which exemplary embodiments of the inventive concept are shown. As will be appreciated by those skilled in the art, the embodiments may be modified in various different ways without departing from the spirit or scope of the inventive concept.

[0049] In order to clearly describe the inventive concept, parts irrelevant to the description are omitted, and the same reference numerals refer to the same or similar constituent elements throughout the specification.

[0050] Further, because the sizes and thicknesses of the constituent members shown in the drawings are arbitrarily given for better understanding and ease of description, the inventive concept is not limited to the sizes and thicknesses shown. In the drawings, the thicknesses of layers, films, panels, regions, etc. are exaggerated for clarity. In the drawings, the thicknesses of some layers and regions are exaggerated for better understanding and ease of description.

[0051] It should be understood that when an element such as a layer, film, zone or substrate is referred to as being "on" another element, it can be directly on the other element, or there can be intermediate elements. Conversely, when an element is referred to as being "directly" "on" another element, there are no intermediate elements. Further, the words "above" or "on" mean being located above or below a target portion, and do not necessarily mean being located on the upper side of a target portion based on the direction of gravity.

[0052] In addition, unless explicitly described to the contrary, the word “comprise” and variations such as “comprising”, should be understood to imply the inclusion of stated elements but not the exclusion of any other elements.

[0053] In the following, reference will be made to Figure 1 and Figure 2 A display device according to an exemplary embodiment will be described and will refer to Figure 3 A method of inspecting a display device according to an exemplary embodiment is described.

[0054] Figure 1 The diagram illustrates a top plan view of a display device according to an exemplary embodiment of the inventive concept.

[0055] Reference Figure 1 , the display device includes a display panel 100A and a circuit portion 750 .

[0056] The display panel 100A according to the present exemplary embodiment includes a display area DA, a peripheral area PA, and a hole area HA. ​​The display panel 100A may include a substrate 110, and the substrate 110 may include the display area DA and the peripheral area PA.

[0057] The display area DA is an area where images are displayed. The display area DA includes a plurality of pixels PX and a plurality of signal lines arranged on a plane parallel to the first direction D1 and the second direction D2. The structure observed when viewed in a direction perpendicular to the first direction D1 and the second direction D2 is referred to as a plane structure, and the structure observed when cut in a direction perpendicular to the first direction D1 and the second direction D2 is referred to as a cross-sectional structure. The first direction D1 may be perpendicular to the second direction D2. According to an exemplary embodiment, a portion of the display area DA may be disposed on a plane parallel to the first direction D1 and the second direction D2. Another portion of the display area DA may be arranged on a surface or a curved surface bent at a predetermined angle to the plane.

[0058] The signal lines include a plurality of gate lines 121 for transmitting gate signals and a plurality of data lines 171 for transmitting data signals. The plurality of gate lines 121 may extend mainly in a first direction D1 to be parallel to each other. The data lines 171 may extend mainly in a second direction D2 to be parallel to each other. The gate lines 121 and the data lines 171 may cross each other in the display area DA.

[0059] Each of the pixels PX may include at least one switching element (see Figure 2 TRa in ) and a pixel electrode connected to at least one switching element (see Figure 2 191 in the display panel 100A). The switching element may be connected to at least one gate line 121 and at least one data line 171, and is a three-terminal element such as a transistor integrated in the display panel 100A. The switching element may be turned on or off depending on a gate signal transmitted by the gate line 121 to selectively transmit a data signal to the pixel electrode.

[0060] Each of the pixels PX may emit light of one of the primary colors or white light. Examples of the primary colors may include three primary colors of red, green, and blue. Other examples of the primary colors include yellow, cyan, and magenta.

[0061] The substrate 110 may include glass, plastic, etc., and may be flexible. For example, the substrate 110 may include various plastics such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC), polyarylate (PAR), polyetherimide (PEI), polyethersulfone, polyimide (PI), etc., metal films, glass, etc.

[0062] The hole area HA is arranged in the display area DA. The hole area HA may be a region where a hole is formed by removing a portion of the substrate 110 and an element arranged on the portion of the substrate 110. The hole may be formed by punching the substrate 110 and the elements stacked on the substrate 110. That is, the hole may be formed by punching the display panel 100A. The hole area HA may be an area for arranging devices such as a camera, a flash, a speaker, an optical sensor, etc. in the display area DA.

[0063] The display area DA includes a hole crack detection line HCD disposed adjacent to the hole area HA. ​​The hole crack detection line HCD may be arranged adjacent to the hole area HA to surround the periphery of the hole area HA. ​​The first end and the second end of the hole crack detection line HCD may be separated from each other. For example, the hole crack detection line HCD may surround the periphery of the hole area HA in the shape of a capital letter omega (Ω). The hole crack detection line HCD is a wiring for detecting a crack near the hole area HA.

[0064] The peripheral area PA may surround the display area DA to be disposed outside the display area DA. The peripheral area PA may include the first and second sensing lines M1 and M2. The peripheral area PA may include a gate driver (not shown) connected to the gate line 121 to output a gate signal.

[0065] The first detection line M1 includes a first detection transmission line DT1 and a first detection receiving line DR1. The first detection transmission line DT1 includes a first end connected to the circuit part 750 and a second end connected to the first end N1 of the hole crack detection line HCD. The first detection receiving line DR1 includes a first end connected to the circuit part 750 and a second end connected to the second end N2 of the hole crack detection line HCD. The first detection transmission line DT1, the hole crack detection line HCD, and the first detection receiving line DR1 may constitute a first closed circuit.

[0066] The first detection transmission line DT1 and the first detection receiving line DR1 are arranged at the lower side, left side and upper side of the display area DA in the peripheral area PA, and can be connected to the hole crack detection line HCD at the upper side of the display area DA. The first detection transmission line DT1 and the first detection receiving line DR1 can extend toward the circuit part 750 to be connected to the circuit part 750 arranged at the lower side of the display panel 110A in the peripheral area PA. That is, each of the first detection transmission line DT1 and the first detection receiving line DR1 may include a portion extending from the circuit part 750 to the peripheral area PA at the lower side of the display panel 110A, a portion extending along the lower edge of the display area DA, a portion extending along the left edge of the display area DA, and a portion extending along the upper edge of the display area DA. The first detection transmission line DT1 and the first detection receiving line DR1 may extend in parallel along the edge of the display area DA.

[0067] The second detection line M2 includes a second detection transmission line DT2 and a second detection receiving line DR2. The second detection transmission line DT2 includes a first end connected to the circuit part 750 and a second end connected to the first end N1 of the hole crack detection line HCD. The second detection receiving line DR2 includes a first end connected to the circuit part 750 and a second end connected to the second end N2 of the hole crack detection line HCD. The second detection transmission line DT2, the hole crack detection line HCD and the second detection receiving line DR2 may constitute a second closed circuit.

[0068] The second detection transmission line DT2 and the second detection receiving line DR2 are arranged at the lower side, right side and upper side of the display area DA in the peripheral area PA, and can be connected to the hole crack detection line HCD at the upper side of the display area DA. The second detection transmission line DT2 and the second detection receiving line DR2 can extend toward the circuit part 750 to be connected to the circuit part 750 arranged at the lower side of the display panel 110A in the peripheral area PA. That is, each of the second detection transmission line DT2 and the second detection receiving line DR1 may include a portion extending from the circuit part 750 to the peripheral area PA at the lower side of the display panel 110A, a portion extending along the lower edge of the display area DA, a portion extending along the right edge of the display area DA, and a portion extending along the upper edge of the display area DA. The second detection transmission line DT2 and the second detection receiving line DR2 can extend in parallel along the edge of the display area DA.

[0069] As illustrated therein, the circuit portion 750 may be arranged on a printed circuit film 700 connected to the peripheral area PA of the display panel 100A. Alternatively, the circuit portion 750 may be directly mounted on the peripheral area PA of the display panel 100A, or may be directly formed on the substrate 110 together with constituent elements such as transistors of the pixels PX. The printed circuit film 700 may further include a data driver and a timing controller for generating data signals for driving the pixels PX. The circuit portion 750 may be formed as an IC chip. Hereinafter, a case where the circuit portion 750 is arranged in the printed circuit film 700 will be described as an example. Reference will be made to Figures 12 to 18 A case where the circuit portion 750 is arranged in the peripheral area PA is described.

[0070] The circuit portion 750 may include a plurality of pad portions electrically bonded to each first end of the first detection transmission line DT1, the first detection receiving line DR1, the second detection transmission line DT2, and the second detection receiving line DR2, or electrically bonded to pads connected to each first end of the first detection transmission line DT1, the first detection receiving line DR1, the second detection transmission line DT2, and the second detection receiving line DR2. The pads may be arranged at a portion where the circuit portion 750 intersects the first detection transmission line DT1, the first detection receiving line DR1, the second detection transmission line DT2, and the second detection receiving line DR2.

[0071] When the circuit portion 750 is disposed on the printed circuit film 700, the first detection transmission line DT1, the first detection receiving line DR1, the second detection transmission line DT2, and the second detection receiving line DR2 may extend to the printed circuit film 700. In this case, the first detection transmission line DT1, the first detection receiving line DR1, the second detection transmission line DT2, and the second detection receiving line DR2 include wiring disposed in the display panel 100A and wiring disposed in the printed circuit film 700 to be connected to the circuit portion 750.

[0072] The circuit part 750 can check whether the first closed circuit is normal by applying the first detection signal to the first detection transmission line DT1 and receiving the first closed circuit signal through the first detection receiving line DR1. The circuit part 750 can check whether the second closed circuit is normal by applying the second detection signal to the second detection transmission line DT2 and receiving the second closed circuit signal through the second detection receiving line DR2. In addition, the circuit part 750 can detect cracks around the hole area HA depending on whether the first closed circuit is normal and whether the second closed circuit is normal. This will be referred to later. Figure 3 A method for inspecting such a display device is described.

[0073] In the following, reference will be made to Figure 2 as well as Figure 1 Describe the cross-sectional structure of a display device.

[0074] Figure 2 The diagram follows Figure 1 A cross-sectional view of the display device taken along line II-II'.

[0075] Reference Figure 2 , the barrier layer 120 may be disposed on the substrate 110. As illustrated therein, the barrier layer 120 may include a plurality of layers. Alternatively, the barrier layer 120 may be formed as a single layer.

[0076] The active patterns 130 and 130d are arranged on the barrier layer 120. The active patterns 130 and 130d may include an active pattern 130 arranged in the display area DA and an active pattern 130d arranged in the peripheral area PA. Each of the active patterns 130 and 130d may include a source region and a drain region and a channel region arranged between the source region and the drain region. The active patterns 130 and 130d may include amorphous silicon, polycrystalline silicon, an oxide semiconductor, etc.

[0077] The first insulating layer 141 may be disposed on the active patterns 130 and 130d, and the first conductive layer may be disposed on the first insulating layer 141. The first conductive layer includes a conductor 155 overlapping the active pattern 130 disposed in the display area DA, a conductor 150d overlapping the active pattern 130d disposed in the peripheral area PA, and the gate line 121 described above, etc.

[0078] The active pattern 130 of the display area DA and the conductor 155 overlapping the active pattern 130 may constitute a transistor TRa used as a switching element included in each pixel PX. The active pattern 130d of the peripheral area PA and the conductor 150d overlapping the active pattern 130d may constitute a transistor TRd used as a switching element included in the gate driver.

[0079] The second insulating layer 142 may be arranged on the first conductive layer and the first insulating layer 141, and the second conductive layer may be arranged on the second insulating layer 142. The second conductive layer may include a first detection line M1, a second detection line M2, and a hole crack detection line HCD. According to an embodiment, at least one of the first detection line M1, the second detection line M2, and the hole crack detection line HCD may be arranged in a conductive layer other than the second conductive layer. For example, the hole crack detection line HCD may be arranged in a fourth conductive layer or a fifth conductive layer to be described later.

[0080] The third insulating layer 160 may be disposed on the second conductive layer and the second insulating layer 142 .

[0081] At least one of the first insulating layer 141, the second insulating layer 142, and the third insulating layer 160 may include silicon nitride (SiN x ), silicon oxide (SiO x ) or silicon oxynitride (SiON) and / or an organic insulating material.

[0082] The first insulating layer 141 , the second insulating layer 142 , and the third insulating layer 160 may include contact holes 165 exposing source regions and / or drain regions of the transistors TRa and TRd.

[0083] As described above, the third conductive layer may be disposed on the third insulating layer 160. The third conductive layer may include a conductor 170 connected to the source region or the drain region of the transistors TRa and TRd through the contact hole 165, a voltage transmission line 177, and a data line 171. The voltage transmission line 177 may be disposed in the peripheral area PA to transmit a common voltage.

[0084] At least one of the first conductive layer, the second conductive layer and the third conductive layer is made of a conductive material such as copper (Cu), aluminum (Al), molybdenum (Mo), titanium (Ti), tantalum (Ta) and an alloy of at least two of them.

[0085] The passivation layer 180 is formed on the third conductive layer and the third insulating layer 160. The passivation layer 180 may include an inorganic insulating material and / or an organic insulating material. The organic insulating material may include a polyacrylic resin, a polyimide resin, etc. The top surface of the passivation layer 180 may be planarized. The passivation layer 180 may have a contact hole exposing the voltage transmission line 177 arranged in the peripheral area PA.

[0086] The pixel electrode layer is disposed on the passivation layer 180. The pixel electrode layer may include a pixel electrode 191 corresponding to each pixel PX in the display area DA, and a voltage transmission electrode 197 disposed in the peripheral area PA. The voltage transmission electrode 197 is physically and electrically connected to the voltage transmission line 177 through a contact hole in the passivation layer 180 to receive a common voltage. The pixel electrode layer may include a semi-transmissive and semi-reflective conductive material or a reflective conductive material.

[0087] The pixel defining layer 350 is arranged on the passivation layer 180 and the pixel electrode layer. The pixel defining layer 350 may have an opening 351 arranged on the pixel electrode 191 and at least one dam portion 350d arranged in the peripheral area PA. The dam portion 350d may extend along the edge of the substrate 110 in a plan view. The spacer 360d may be further arranged on the dam portion 350d. The pixel defining layer 350 may include a photosensitive material such as an acrylic resin or a polyimide resin.

[0088] like Figure 2 As illustrated in , the first inspection line M1 may be arranged at the opposite side (outside) of the display area DA relative to the dam portion 350d. Similarly, the second inspection line M2 may be arranged at the opposite side of the display area DA relative to the dam portion 350d. According to an exemplary embodiment, the first inspection line M1 and the second inspection line M2 may be arranged at the same side of the display area DA relative to the dam portion 350d, for example, inside the dam portion 350d.

[0089] The voltage transmission electrode 197 includes a portion that is not covered by the pixel defining layer 350 .

[0090] The emission layer 370 is disposed on the pixel electrode 191. The emission layer 370 may include a portion disposed within the opening 351 of the pixel defining layer 350. The emission layer 370 may further include at least one dummy emission layer 370d disposed in the peripheral area PA and disposed on the pixel defining layer 350. The emission layer 370 may include an organic emission material or an inorganic emission material.

[0091] The common electrode 270 may be disposed on the emission layer 370. The common electrode 270 may also be formed on the pixel defining layer 350 and continuously formed above the pixel PX. The common electrode 270 is physically and electrically connected to the voltage transmission electrode 197 in the peripheral area PA to receive a common voltage. The common electrode 270 may include a transparent conductive material.

[0092] The pixel electrode 191 , the emission layer 370 , and the common electrode 270 of each pixel PX constitute a light emitting diode ED, and one of the pixel electrode 191 and the common electrode 270 functions as an anode and the other functions as a cathode.

[0093] The encapsulation portion 380 for protecting and encapsulating the light emitting diode ED may be disposed on the common electrode 270. The encapsulation portion 380 may include at least one of the inorganic layers 381 and 383 and at least one organic layer 382. At least one of the inorganic layers 381 and 383 and at least one organic layer 382 may be alternately stacked. The organic layer 382 may include an organic material and may have a planarization property. The inorganic layers 381 and 383 may be made of, for example, aluminum oxide (AlO x ), silicon oxide (SiO x ), silicon nitride (SiN x ) and silicon oxynitride (SiON) inorganic materials.

[0094] The planar areas of the inorganic layers 381 and 383 are wider than the planar area of ​​the organic layer 382, ​​allowing the two inorganic layers 381 and 383 to contact each other in the peripheral area PA. The inorganic layer 381 disposed at the lowest position of the inorganic layers 381 and 383 may contact the upper surface of the third insulating layer 160 in the peripheral area PA, but the inventive concept is not limited thereto.

[0095] An edge of the organic layer 382 included in the encapsulation portion 380 may be disposed between the dam portion 350d and the display area DA. When the organic layer 382 of the encapsulation portion 380 is formed, the dam portion 350d may serve to prevent the organic material from flowing out.

[0096] A buffer layer 389 including an inorganic insulating material and / or an organic insulating material may be disposed on the encapsulation portion 380. The buffer layer 389 may be omitted.

[0097] The fourth conductive layer may be arranged on the buffer layer 389. The fourth conductive layer may include a first touch conductor TEa. The first touch insulating layer 391 may be arranged on the fourth conductive layer, and the fifth conductive layer may be arranged on the first touch insulating layer 391. The fifth conductive layer may include a second touch conductor TEb. The second touch insulating layer 392 may be arranged on the fifth conductive layer. The first touch conductor TEa and the second touch conductor TEb constitute a capacitive touch sensor, and touch information such as a touch presence or a touch position may be detected when an external object is touched.

[0098] In the following, reference will be made to Figure 3 as well as Figure 1 Describe the inspection method of the display device.

[0099] Figure 3 A flowchart illustrating an inspection method of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0100] Reference Figure 3 The circuit part 750 outputs a first detection signal to the first detection transmission line DT1 (S101). The first detection signal is transmitted to the first end N1 of the hole crack detection line HCD through the first detection transmission line DT1, and is transmitted to the first detection receiving line DR1 through the hole crack detection line HCD.

[0101] The circuit part 750 receives the first detection signal transmitted through the first detection receiving line DR1 as a first closed circuit signal (S102). That is, the circuit part 750 receives the first closed circuit signal transmitted through the first closed circuit formed by the first detection transmission line DT1, the hole crack detection line HCD, and the first detection receiving line DR1. The first closed circuit signal can be received as a voltage lower than the first detection signal by a level corresponding to the resistance of the first detection transmission line DT1, the hole crack detection line HCD, and the first detection receiving line DR1.

[0102] The circuit portion 750 determines whether the first closed circuit is normal (S103). When the voltage of the first closed circuit signal is included in a predetermined reference voltage range, the circuit portion 750 may determine that the first closed circuit is normal. The reference voltage range may be predetermined and stored in the circuit portion 750 by reflecting the result of measuring the voltage of the first closed circuit signal in a state where no crack occurs in the display panel 100A. Alternatively, when the resistances of the first detection transmission line DT1, the hole crack detection line HCD, and the first detection receiving line DR1 are included in the reference resistance range, the circuit portion 750 may determine that the first closed circuit is normal based on the first closed circuit signal. The reference resistance range may be predetermined and stored in the circuit portion 750 by reflecting the result of measuring the resistances of the first detection transmission line DT1, the hole crack detection line HCD, and the first detection receiving line DR1 in a state where no crack occurs in the display panel 100A.

[0103] When the first closed circuit is normal, the circuit part 750 outputs a second detection signal to the second detection transmission line DT2 (S104). The second detection signal is transmitted to the first end N1 of the hole crack detection line HCD through the second detection transmission line DT2, and is transmitted to the second detection receiving line DR2 through the hole crack detection line HCD.

[0104] The circuit part 750 receives the second detection signal transmitted through the second detection receiving line DR2 as a second closed circuit signal (S105). That is, the circuit part 750 receives the second closed circuit signal transmitted through the second closed circuit formed by the second detection transmission line DT2, the hole crack detection line HCD, and the second detection receiving line DR2. The second closed circuit signal can be received as a voltage lower than the second detection signal by a level corresponding to the resistance of the second detection transmission line DT2, the hole crack detection line HCD, and the second detection receiving line DR2.

[0105] The circuit part 750 determines whether the second closed circuit is normal (S106). When the voltage of the second closed circuit signal is included in the predetermined reference voltage range, the circuit part 750 can determine that the second closed circuit is normal. Alternatively, when the resistances of the second detection transmission line DT2, the hole crack detection line HCD, and the second detection reception line DR2 are included in the reference resistance range, the circuit part 750 can determine that the second closed circuit is normal based on the second closed circuit signal.

[0106] When the second closed circuit is normal, the circuit portion 750 determines that the display panel 100A is good (S107). That is, the circuit portion 750 can determine that no cracks have occurred near the edge and the hole of the display panel 100A.

[0107] When the voltage of the second closed circuit signal is not included in the predetermined reference voltage range or the resistances of the second detection transmission line DT2, the hole crack detection line HCD, and the second detection reception line DR2 are not included in the reference resistance range, the circuit part 750 determines that there is a defect of the second detection line M2. That is, the circuit part 750 can determine that a crack has appeared at the right edge or the upper edge of the display panel 100A. The circuit part 750 can generate and output a signal corresponding to the crack defect of the second detection line M2.

[0108] At the same time, even when the first closed circuit is abnormal (defective), the circuit part 750 outputs the second detection signal to the second detection transmission line DT2 (S104'). The circuit part 750 receives the second detection signal transmitted through the second detection receiving line DR2 as the second closed circuit signal (S105'), and determines whether the second closed circuit is normal (S106').

[0109] When the second closed circuit is normal, the circuit part 750 determines a defect of the first inspection line M1 (S109). That is, the circuit part 750 may determine that a crack has occurred at the left edge or the upper edge of the display panel 100A. The circuit part 750 may generate and output a signal corresponding to the crack defect of the first inspection line M1.

[0110] When the second closed circuit is abnormal (defective), the circuit part 750 determines that there is a hole crack defect (S110). That is, when both the first closed circuit and the second closed circuit are defective, the circuit part 750 can determine that there is a hole crack defect in the hole crack detection line HCD. Cracks can appear in both the first detection line M1 and the second detection line M2, but cracks rarely appear in both the first detection line M1 and the second detection line M2 during the manufacturing process of the display panel 100A. Therefore, when it is determined (measured) that both the first closed circuit and the second closed circuit are defective, the circuit part 750 can determine that there is a hole crack defect. The circuit part 750 can generate and output a signal corresponding to the hole crack defect.

[0111] In the following, reference will be made to Figure 4 A display device according to an exemplary embodiment of the present invention is described. Figures 1 to 3 The differences between the aforementioned exemplary embodiments.

[0112] Figure 4 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0113] Reference Figure 4According to the present exemplary embodiment, the display panel 100B included in the display device may include a first inspection line M1 and a second inspection line M2, and a first inspection transmission line DT1 included in the first inspection line M1 and a second inspection transmission line DT2 included in the second inspection line M2 may be connected to different ends of the hole crack detection line HCD. A first inspection receiving line DR1 included in the first inspection line M1 and a second inspection receiving line DR2 included in the second inspection line M2 may be connected to different ends of the hole crack detection line HCD.

[0114] For example, Figure 4 As shown in the figure, when the first detection transmission line DT1 is connected to the first end N1 of the hole crack detection line HCD and the first detection receiving line DR1 is connected to the second end N2 of the hole crack detection line HCD, the second detection transmission line DT2 can be connected to the second end N2 of the hole crack detection line HCD and the second detection receiving line DR2 can be connected to the first end N1 of the hole crack detection line HCD.

[0115] Apart from these differences, the above reference Figures 1 to 3 The features of the described exemplary embodiments may be applied with reference to Figure 4 All exemplary embodiments are described, and therefore redundant descriptions are omitted among the exemplary embodiments.

[0116] In the following, reference will be made to Figure 5 and Figure 6 A display device according to an exemplary embodiment of the present invention is described. Figures 1 to 3 The differences between the aforementioned exemplary embodiments.

[0117] Figure 5 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated. Figure 6 The diagram follows Figure 5 A cross-sectional view of the display device taken along line VI-VI'.

[0118] Reference Figure 5 and Figure 6 , in the display panel 100C according to the present exemplary embodiment, the peripheral area PA may further include a third inspection line M3 and a fourth inspection line M4 which are not connected to the hole crack inspection line HCD.

[0119] The opposite ends of the third detection line M3 may be connected to the circuit portion 750 to form a third closed circuit. The third detection line M3 may be arranged at the lower side, the left side, and the upper side of the display area DA in the peripheral area PA. That is, the third detection line M3 may have two substantially parallel lines, each end of the two substantially parallel lines is connected to each other at the upper side of the display area DA in the peripheral area PA, and is arranged in the peripheral area PA to have a closed circuit shape extending from the circuit portion 750 toward the display area DA. For example, the third detection line M3 may include a first portion extending along the lower edge of the display area DA in a direction opposite to the first direction D1, a second portion extending along the left edge of the display area DA in the second direction D2, and a third portion extending along the upper edge of the display area DA in the first direction D1.

[0120] The opposite ends of the fourth detection line M4 may be connected to the circuit portion 750 to form a fourth closed circuit. The fourth detection line M4 may be arranged at the lower side, the right side, and the upper side of the display area DA in the peripheral area PA. That is, the fourth detection line M4 may have two substantially parallel lines, each end of the two substantially parallel lines is connected to each other at the upper side of the display area DA in the peripheral area PA, and is arranged in the peripheral area PA to have a closed circuit shape extending from the circuit portion 750 toward the display area DA. For example, the fourth detection line M4 may include a first portion extending along the lower edge of the display area DA in the first direction D1, a second portion extending along the right edge of the display area DA in the second direction D2, and a third portion extending along the upper edge of the display area DA in a direction opposite to the first direction D1.

[0121] The third inspection line M3 may be disposed outside the first inspection line M1. That is, the first inspection line M1 may be disposed between the third inspection line M3 and the display area DA, and the third inspection line M3 may be disposed closer to the edge of the substrate 110 than the first inspection line M1.

[0122] The fourth inspection line M4 may be disposed outside the second inspection line M2. That is, the second inspection line M2 may be disposed between the fourth inspection line M4 and the display area DA, and the fourth inspection line M4 may be disposed closer to the edge of the substrate 110 than the second inspection line M2.

[0123] The first and second sense lines M1 and M2 may be disposed in a different conductive layer from the third and fourth sense lines M3 and M4 .

[0124] like Figure 6, the third sense line M3 may be arranged in the second conductive layer. Similarly, the fourth sense line M4 may also be arranged in the second conductive layer. In this case, the first sense line M1 may be arranged in the fourth conductive layer, and the second sense line M2 may also be arranged in the fourth conductive layer. The first sense line M1 and the second sense line M2 may be arranged inwardly (between the display area DA and the dam portion 350d) relative to the dam portion 350d.

[0125] Alternatively, the first and second sense lines M1 and M2 may be arranged in the same second conductive layer as the third and fourth sense lines M3 and M4. In this case, the first and second sense lines M1 and M2 may be arranged to be parallel to the third and fourth sense lines M3 and M4 inside or outside the dam portion 350d.

[0126] The circuit portion 750 may output a third detection signal to the third detection line M3, and receive the third detection signal (or third closed circuit signal) fed back to check for crack defects at the lower edge, left edge, and upper edge of the display panel 100C. The circuit portion 750 may output a fourth detection signal to the fourth detection line M4, and receive the fourth detection signal (or fourth closed circuit signal) fed back to check for crack defects at the lower edge, right edge, and upper edge of the display panel 100C.

[0127] Apart from these differences, the above reference Figures 1 to 3 The features of the described exemplary embodiments may be applied with reference to Figure 5 and Figure 6 The exemplary embodiments are described, and thus redundant descriptions are omitted among the exemplary embodiments.

[0128] In the following, reference will be made to Figure 7 A display device according to an exemplary embodiment of the present inventive concept will be described, and reference will be made to Figure 8 describe Figure 7 The inspection method of the display device will be mainly described. Figures 1 to 3 The differences between the aforementioned exemplary embodiments.

[0129] Figure 7 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated. Figure 8 A flowchart illustrating an inspection method of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0130] Reference Figure 7According to the present exemplary embodiment, the display panel 100D may include a first detection line M1 and a second detection line M2 connected to different ends of the hole crack detection line HCD, a first detection transmission line DT1 and a first detection receiving line DR1 included in the first detection line M1 may be connected to the same end of the hole crack detection line HCD, and a second detection transmission line DT2 and a second detection receiving line DR2 included in the second detection line M2 may be connected to the same end of the hole crack detection line HCD.

[0131] For example, Figure 7 As illustrated in FIG. 1 , the first detection transmission line DT1 and the first detection receiving line DR1 may be connected to the second end N2 of the hole crack detection line HCD, and the second detection transmission line DT2 and the second detection receiving line DR2 may be connected to the first end N1 of the hole crack detection line HCD. The first detection transmission line DT1 and the first detection receiving line DR1 may be connected to each other at the second end N2 of the hole crack detection line HCD to form a first closed circuit. The second detection transmission line DT2 and the second detection receiving line DR2 may be connected to each other at the first end N1 of the hole crack detection line HCD to form a second closed circuit. In addition, the first detection transmission line DT1, the hole crack detection line HCD, and the second detection receiving line DR2 may form a third closed circuit. The second detection transmission line DT2, the hole crack detection line HCD, and the first detection receiving line DR1 may form a fourth closed circuit.

[0132] In this case, you can Figure 8 Check the display device as shown in the figure.

[0133] Reference Figure 8 The circuit part 750 outputs the first detection signal to the first detection transmission line DT1 (S201). The first detection signal is transmitted to the second end N2 of the hole crack detection line HCD through the first detection transmission line DT1, and is transmitted to the first detection receiving line DR1 at the second end N2.

[0134] The circuit part 750 receives the first detection signal transmitted through the first detection receiving line DR1 as a first closed circuit signal (S202). That is, the circuit part 750 receives the first closed circuit signal transmitted through the first closed circuit formed by the first detection transmission line DT1, the second end N2 of the hole crack detection line HCD and the first detection receiving line DR1.

[0135] The circuit part 750 determines whether the first closed circuit is normal (S203).

[0136] When the voltage of the first closed circuit signal is not included in the predetermined reference voltage range or the resistance of the first closed circuit is not included in the reference resistance range, the circuit part 750 determines that there is a defect of the first inspection line M1 (S204). That is, the circuit part 750 can determine that a crack has occurred at the lower edge, left edge, or upper edge of the display panel 100D.

[0137] When the first closed circuit is normal, the circuit part 750 outputs a second detection signal to the second detection transmission line DT2 (S205). The second detection signal is transmitted to the first end N1 of the hole crack detection line HCD through the second detection transmission line DT2, and is transmitted to the second detection receiving line DR2 at the first end N1.

[0138] The circuit part 750 receives the second detection signal transmitted through the second detection receiving line DR2 as a second closed circuit signal (S206). That is, the circuit part 750 receives the second closed circuit signal transmitted through the second closed circuit formed by the second detection transmission line DT2, the first end N1 of the hole crack detection line HCD, and the second detection receiving line DR2.

[0139] The circuit part 750 determines whether the second closed circuit is normal (S207).

[0140] When the voltage of the second closed circuit signal is not included in the predetermined reference voltage range or the resistance of the second closed circuit is not included in the reference resistance range, the circuit part 750 determines that there is a defect in the second detection line M2 (S208). That is, the circuit part 750 can determine that the crack has appeared at the lower edge, the right edge, or the upper edge of the display panel 100D. At the same time, even when the first closed circuit is abnormal, the output of the second detection signal (S205), the reception of the second closed circuit signal (S206), the determination of whether the second closed circuit is normal (S207), and the determination of whether the defect of the second detection line M2 exists (S208) can be further performed as needed.

[0141] When the second closed circuit is normal, the circuit part 750 outputs the first detection signal to the first detection transmission line DT1 or outputs the second detection signal to the second detection transmission line DT2 (S209). Hereinafter, an example in which the circuit part 750 outputs the first detection signal to the first detection transmission line DT1 will be described. The first detection signal is transmitted to the second end N2 of the hole crack detection line HCD through the first detection transmission line DT1, and is transmitted to the second detection receiving line DR2 through the hole crack detection line HCD.

[0142] The circuit part 750 receives the first detection signal transmitted through the second detection receiving line DR2 as the third closed circuit signal (S210). That is, the circuit part 750 receives the third closed circuit signal transmitted through the third closed circuit formed by the first detection transmission line DT1, the hole crack detection line HCD, and the second detection receiving line DR2. When the circuit part 750 outputs the second detection signal to the second detection transmission line DT2, the circuit part 750 can receive the fourth closed circuit signal transmitted through the fourth closed circuit formed by the second detection transmission line DT2, the hole crack detection line HCD, and the first detection receiving line DR1.

[0143] The circuit part 750 determines whether the third closed circuit is normal (S211). When the voltage of the third closed circuit signal is included in a predetermined reference voltage range or the resistance of the third closed circuit is included in a reference resistance range, the circuit part 750 may determine that the third closed circuit is normal.

[0144] When the third closed circuit is normal, the circuit portion 750 determines that the display panel 100D is good (S212). That is, the circuit portion 750 can determine that no crack has occurred in the display panel 100D.

[0145] When the third closed circuit is not normal, the circuit portion 750 determines that there is a hole crack defect (S213). That is, when it is determined (measured) that the third closed circuit is defective, the circuit portion 750 may determine that a hole crack defect has occurred in the hole crack detection line HCD. Alternatively, when the circuit portion 750 receives the fourth closed circuit signal, it may determine whether the display panel 100D is good or determine a hole crack defect depending on whether the fourth closed circuit signal is normal.

[0146] Apart from these differences, the above reference Figures 1 to 3 The features of the described exemplary embodiments may be applied with reference to Figure 7 and Figure 8 The exemplary embodiments are described, and thus redundant descriptions are omitted among the exemplary embodiments.

[0147] In the following, reference will be made to Fig. 9 A display device according to an exemplary embodiment of the present invention is described. Figure 1 and Figure 2 The differences between the aforementioned exemplary embodiments.

[0148] Fig. 9 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0149] Reference Fig. 9, in the display panel 100E according to the present exemplary embodiment, the hole crack detection line HCD may be omitted, and the first and second detection lines M1′ and M2′ each having opposite ends connected to the circuit part 750 may be arranged to surround the hole area HA.

[0150] The opposite ends of the first detection line M1' may be connected to the circuit portion 750 to form a first closed circuit, and the opposite ends of the second detection line M2' may be connected to the circuit portion 750 to form a second closed circuit. The first detection line M1' may be arranged in a closed circuit shape extending from the circuit portion 750 toward the display area DA and then extending along the lower edge, left edge, and upper edge of the display area DA, and then extending from the upper edge of the display area DA adjacent to the hole area HA toward the display area DA, and extending to surround the left edge of the hole area HA to return in the reverse direction. The second detection line M2' may be arranged in a closed circuit shape extending from the circuit portion 750 toward the display area DA and then extending along the lower edge, right edge, and upper edge of the display area DA, and then extending from the upper edge of the display area DA adjacent to the hole area HA toward the display area DA, and extending to surround the right edge of the hole area HA to return in the reverse direction.

[0151] The first and second inspection lines M1' and M2' may be physically separated from each other and may face each other with the hole area HA between the first and second inspection lines M1' and M2'.

[0152] The circuit portion 750 may output a first detection signal to the first detection line M1', and may receive the first detection signal fed back as a first closed circuit signal to check for crack defects around the lower edge, left edge, and upper edge of the display panel 100E and the left side of the hole area HA. ​​The circuit portion 750 may output a second detection signal to the second detection line M2', and may receive the second detection signal fed back as a second closed circuit signal to check for crack defects around the lower edge, right edge, and upper edge of the display panel 100E and the right side of the hole area HA.

[0153] Apart from these differences, the above reference Figure 1 and Figure 2 The features of the described exemplary embodiments may be applied with reference to Fig. 9 The exemplary embodiments are described, and thus redundant descriptions are omitted among the exemplary embodiments.

[0154] In the following, reference will be made to Fig.10 A display device according to an exemplary embodiment of the present invention is described. Figure 5 and Figure 6 The differences between the aforementioned exemplary embodiments.

[0155] Fig.10 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0156] Reference Fig.10 In the display panel 100F according to the present exemplary embodiment, Figure 5 The second detection line M2 in the display panel 100C.

[0157] In this case, the circuit portion 750 may inspect a crack defect at the edge of the display panel 100F by using the third inspection line M3 and the fourth inspection line M4, and may perform a hole crack defect inspection by using the first inspection line M1 and the hole crack inspection line HCD. That is, the circuit portion 750 may output a first inspection signal to the first inspection transmission line DT1, and may inspect a hole crack defect by receiving a first closed circuit signal transmitted through the hole crack inspection line HCD and the first inspection reception line DR1.

[0158] Apart from these differences, the above reference Figure 5 and Figure 6 The features of the described exemplary embodiments may be applied with reference to Fig.10 The exemplary embodiments are described, and thus redundant descriptions are omitted among the exemplary embodiments.

[0159] In the following, reference will be made to Fig.11 A display device according to an exemplary embodiment of the present invention is described. Figure 5 and Figure 6 The differences between the aforementioned exemplary embodiments.

[0160] Fig.11 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0161] Reference Fig.11 In the display panel 100G according to the present exemplary embodiment, the Figure 5 The first detection transmission line DT1 and the second detection reception line DR2 in the display panel 100C are shown in FIG. The second detection transmission line DT2 and the first detection reception line DR1 form a first closed circuit.

[0162] In this case, the circuit portion 750 may inspect a crack defect at the edge of the display panel 100G by using the third inspection line M3 and the fourth inspection line M4, and may perform a hole crack defect inspection by using the second inspection transmission line DT2 and the first inspection receiving line DR1. That is, the circuit portion 750 may output a first inspection signal to the second inspection transmission line DT2, and may inspect a hole crack defect by receiving a first closed circuit signal transmitted through the hole crack inspection line HCD and the first inspection receiving line DR1.

[0163] Apart from these differences, the above reference Figure 5 and Figure 6 The features of the described exemplary embodiments may be applied with reference to Fig.11 The exemplary embodiments are described, and thus redundant descriptions are omitted among the exemplary embodiments.

[0164] In the following, reference will be made to Figures 12 to 18 A case where the circuit portion 750 is arranged in the peripheral area PA of the display panel is described. The difference from the display device according to the aforementioned exemplary embodiment will be mainly described.

[0165] Fig.12 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0166] Reference Fig.12 , the circuit portion 750 may be arranged in the peripheral area PA on the substrate 110, instead of referring to Figure 1 The depicted is arranged on the printed circuit film 700. The circuit portion 750 may be directly mounted on the peripheral area PA, or may be directly formed on the substrate 110 together with constituent elements such as transistors of the pixel PX.

[0167] In this case, the substrate 110 may include a bending area BA disposed between the display area DA and the circuit portion 750. The bending area BA may be an area where the display panel 100A' may be bent backward or forward. The peripheral area PA where the circuit portion 750 is disposed may be folded to the back of the display panel 100A'.

[0168] The first detection transmission line DT1 , the first detection reception line DR1 , the second detection transmission line DT2 , and the second detection reception line DR2 may extend from the circuit portion 750 along the edge of the display area DA through the bending area BA on the substrate 110 .

[0169] Further, some of the edges of the substrate 110 may be rounded, and bent portions of the first detection transmission line DT1 , the first detection reception line DR1 , the second detection transmission line DT2 , and the second detection reception line DR2 may be rounded.

[0170] In addition to these features, the above reference Figures 1 to 3 The features of the described exemplary embodiments may be applied with reference to Fig.12 The exemplary embodiments are described, and thus redundant descriptions are omitted among the exemplary embodiments.

[0171] Fig.13 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0172] Fig.13 The display panel 100B' may include the above reference Figure 4 , Fig.12 as well as Figures 1 to 3 All features of the exemplary embodiments are described herein, and thus repeated descriptions of the exemplary embodiments will be omitted.

[0173] Fig.14 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0174] Reference Fig.14 The third and fourth inspection lines M3 and M4 may extend from the circuit portion 750 along the edge of the display area DA through the bending area BA on the substrate 110. The bending portions of the third and fourth inspection lines M3 and M4 may be rounded depending on the edge shape of the substrate 110.

[0175] Fig.14 The display panel 100C' may include the above reference Figure 5 and Figure 6 , Fig.12 as well as Figures 1 to 3 All features of the exemplary embodiments are described herein, and thus repeated descriptions of the exemplary embodiments will be omitted.

[0176] Fig.15 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0177] Fig.15 The display panel 100D' may include the above reference Figure 7 and Figure 8 , Fig.12 as well as Figures 1 to 3 All features of the exemplary embodiments are described herein, and thus repeated descriptions of the exemplary embodiments will be omitted.

[0178] Fig.16 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0179] Reference Fig.16The first and second inspection lines M1' and M2' may extend from the circuit part 750 along the edge of the display area DA through the bending area BA on the substrate 110. The bending portions of the first and second inspection lines M1' and M2' may be rounded depending on the edge shape of the substrate 110.

[0180] Fig.16 The display panel 100E' may include the above reference Fig. 9 , Fig.12 as well as Figure 1 and Figure 2 All features of the exemplary embodiments are described herein, and thus repeated descriptions of the exemplary embodiments will be omitted.

[0181] Fig.17 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0182] Reference Fig.17 , the first inspection line M1, the third inspection line M3, and the fourth inspection line M4 may extend from the circuit part 750 along the edge of the display area DA through the bending area BA on the substrate 110. The bending portions of the first inspection line M1, the third inspection line M3, and the fourth inspection line M4 may be rounded depending on the edge shape of the substrate 110.

[0183] Fig.17 The display panel 100F' may include the above reference Fig.10 , Fig.12 as well as Figure 5 and Figure 6 All features of the exemplary embodiments are described herein, and thus repeated descriptions of the exemplary embodiments will be omitted.

[0184] Fig.18 A top plan view of a display device according to an exemplary embodiment of the inventive concept is illustrated.

[0185] Reference Fig.18 , the second detection transmission line DT2, the first detection reception line DR1, the third detection line M3, and the fourth detection line M4 may extend from the circuit part 750 along the edge of the display area DA through the bending area BA on the substrate 110. The bending portions of the second detection transmission line DT2, the first detection reception line DR1, the third detection line M3, and the fourth detection line M4 may be rounded depending on the edge shape of the substrate 110.

[0186] Fig.18 The display panel 100G' may include the above reference Fig.11 , Fig.12 as well as Figure 5 and Figure 6All features of the exemplary embodiments are described herein, and thus repeated descriptions of the exemplary embodiments will be omitted.

[0187] Although the exemplary embodiments of the inventive concept have been specifically shown and described with reference to the accompanying drawings, the specific terms used herein are only for the purpose of describing the inventive concept and are not intended to limit their meanings or the scope of the inventive concept set forth in the claims. Therefore, it will be understood by those skilled in the art that various modifications and other equivalent embodiments of the inventive concept are possible. Therefore, the true technical protection scope of the inventive concept must be determined based on the technical spirit of the appended claims.

Claims

1. A display device, comprising: A display area for displaying an image; a peripheral area arranged outside the display area; a non-display area arranged in the display area; a surrounding line at least partially surrounding at least a portion of the non-display area and having a first end and a second end; a first line extending from the peripheral region and connected to the surrounding line; a second line extending from the peripheral region and connected to the surrounding line; as well as A circuit portion connected to the first line and the second line.

2. The display device according to claim 1, wherein: The first line includes: a first transmission line having a first end connected to the circuit portion and a second end connected to the first end of the surrounding line; and a first receiving wire having a first end connected to the circuit portion and a second end connected to the second end of the surrounding wire, and Wherein, the second line includes: a second transmission line having a first end connected to the circuit portion and a second end connected to the first end of the surrounding line; and A second receiving wire having a first end connected to the circuit portion and a second end connected to the second end of the surrounding wire.

3. The display device according to claim 2, wherein: The first transmission line, the surrounding line, and the first receiving line constitute a first closed circuit, and the second transmission line, the surrounding line, and the second receiving line constitute a second closed circuit.

4. The display device according to claim 3, wherein: When it is determined that both the first closed circuit and the second closed circuit are defective based on signals from the first receiving wire and the second receiving wire, the circuit portion determines a hole crack defect in which a crack occurs in the surrounding wire.

5. The display device according to claim 1, wherein: The circuit portion is configured to determine a crack defect at the peripheral area and the non-display area based on signals from the first line and the second line.

6. The display device according to claim 1, wherein: The first line includes: a first transmission line having a first end connected to the circuit portion and a second end connected to the first end of the surrounding line; and a first receiving wire having a first end connected to the circuit portion and a second end connected to the second end of the surrounding wire, Wherein, the second line includes: a second transmission line having a first end connected to the circuit portion and a second end connected to the second end of the surrounding line; and A second receiving wire having a first end connected to the circuit portion and a second end connected to the first end of the surrounding wire.

7. The display device according to claim 1, further comprising: a third line arranged in the peripheral region outside the first line and having opposite ends connected to the circuit portion; as well as A fourth line is arranged outside the second line in the peripheral area and has opposite ends connected to the circuit portion.

8. The display device according to claim 7, wherein: The first and second lines are arranged in the same conductive layer as the third and fourth lines.

9. The display device according to claim 7, wherein: The first and second lines are arranged in different conductive layers from the third and fourth lines.

10. The display device according to claim 1, wherein: The first line includes: a first transmission line having a first end connected to the circuit portion and a second end connected to the second end of the surrounding line; and a first receiving wire having a first end connected to the circuit portion and a second end connected to the second end of the surrounding wire, and Wherein, the second line includes: a second transmission line having a first end connected to the circuit portion and a second end connected to the first end of the surrounding line; and A second receiving wire having a first end connected to the circuit portion and a second end connected to the first end of the surrounding wire.

11. The display device according to claim 10, wherein: The first transmission line and the first reception line constitute a first closed circuit, and the second transmission line and the second reception line constitute a second closed circuit.

12. The display device according to claim 11, wherein: The first transmission line, the surrounding line and the second receiving line form a third closed circuit.

13. The display device according to claim 12, wherein: When it is determined that the third closed circuit is defective based on the signal from the second receiving line, the circuit portion is configured to determine a defect at the non-display area where a crack occurs in the surrounding line.

14. A display device comprising: a substrate including a display area for displaying an image and a peripheral area arranged outside the display area; a non-display area arranged in the display area; a first line at least partially surrounding a first edge of the non-display area, the first line comprising at least two first lines extending parallel to each other, and ends of the at least two first lines being connected to each other in a first region adjacent to the non-display area; a second line at least partially surrounding a second edge of the non-display area opposite to the first edge of the non-display area, the second line comprising at least two second lines extending parallel to each other, and ends of the at least two second lines being connected to each other in a second region adjacent to the non-display area; and A circuit portion connected to opposite ends of the first line and opposite ends of the second line.

15. The display device according to claim 14, wherein: The non-display area is a region where a hole is formed by removing a substrate and elements arranged on the substrate.

16. The display device according to claim 14, wherein: The first line and the second line are physically separated and face each other, and the non-display area is interposed between the first line and the second line.

17. The display device according to claim 14, wherein: The circuit portion is configured to determine a crack defect at the peripheral area and the non-display area based on signals from the first line and the second line.

18. The display device according to claim 14, further comprising: a third line arranged in the peripheral region outside the first line and having opposite ends connected to the circuit portion; as well as A fourth line is arranged outside the second line in the peripheral area and has opposite ends connected to the circuit portion.

19. The display device according to claim 18, wherein: The first and second lines are arranged in the same conductive layer as the third and fourth lines.

20. The display device according to claim 18, wherein: The first and second lines are arranged in different conductive layers from the third and fourth lines.

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