Display device

BR112025020230A2Pending Publication Date: 2026-08-11
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Application Number
BR112025020230
Authority / Receiving Office
BR · BR
Patent Type
Applications
Publication Date
2026-08-11

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Description

1 / 35 DISPLAY DEVICE FIELD OF TECHNIQUE

[0001] The present invention relates to a display device. BACKGROUND OF THE INVENTION

[0002] As the information society develops, the demand for display devices for displaying images has increased and diversified. For example, display devices have been applied to various electronic devices, such as smartphones, digital cameras, laptop computers, navigation devices, and smart televisions.

[0003] Display devices can be flat panel display devices, such as liquid crystal display devices, field emission display devices, or organic light-emitting display devices. Among such flat panel display devices, a light-emitting display device can display an image without a backlight unit that provides light to a display panel, because each of the display panel pixels includes light-emitting elements that can emit light on their own.

[0004] The display panel is manufactured by forming pixels, drive circuits, and the like, according to the resolution in the cell regions of a master glass, separating the respective cell regions and modularizing the separated cell regions into display panels.Before each display panel is marketed, test data voltages and scanning signals are supplied to all pixels using test switching elements formed in the display panel, and the light emission states, defects, and the like of the pixels are tested. SUMMARY OF THE INVENTION ASPECTS TO BE ACHIEVED BY THE INVENTION

[0005] Aspects of the present invention provide a device for Petition 870250085608, dated 09 / 22 / 2025, page 7 / 70 2 / 35 display whose design is altered so that the test switching elements formed in a display panel are stably maintained in an off state, even after the display panel is commercialized.

[0006] Aspects of the present invention also provide a display device capable of controlling the test switching elements of a display panel so that they are stably maintained in an off state.

[0007] However, aspects of the present invention are not limited to those presented here. The above and other aspects of the present invention will become more apparent to one skilled in the art to which the present invention pertains by referring to the detailed description of the present invention given below. MEANS OF ACHIEVING THE ASPECTS OF THE INVENTION

[0008] According to one embodiment of the description, a display device comprising a plurality of pixels arranged in a display area of ​​a display panel, a test switching element area formed in a non-display area or in a subarea of ​​the display panel and including a plurality of test switching elements, and a display drive circuit that controls the timing of data voltage supply and drive control signals supplied to the plurality of pixels, wherein the display drive circuit controls the off-switching operations of the plurality of test switching elements, such that the plurality of test switching elements is maintained in an off state during an image display period.

[0009] In one embodiment, the plurality of test switching elements is connected to a plurality of data lines in a way that... Petition 870250085608, dated 09 / 22 / 2025, page 8 / 70 3 / 35 of the data in the display area or a plurality of fan-shaped lines formed in the non-display area in a one-to-one fashion in parallel structures with the plurality of data lines or the plurality of fan-shaped lines.

[0010] In one embodiment, the plurality of test switching elements is connected to a plurality of port lines formed in the display area or to a plurality of power lines extending to the non-display area in a one-to-one manner in structures parallel to the plurality of port lines or the plurality of power lines.

[0011] According to one embodiment of the description, a display device comprising a plurality of pixels arranged in a display area of ​​a display panel, a gate driver that supplies scanning signals to gate lines arranged in a non-display area and in the display area of ​​the display panel, a test switching element area formed over the non-display area or in a sub-area of ​​the display panel and including a plurality of test switching elements, and a display drive circuit that controls the timing of supplying data voltages and drive control signals supplied to the plurality of pixels and gate control signals supplied to the gate driver,where the display drive circuit controls the on / off switching operations of the plurality of test switching elements so that the plurality of test switching elements is maintained in an off state during an image display period.

[0012] In one embodiment, the plurality of test switching elements is connected to a plurality of data lines formed in the display area or to a plurality of fan lines formed in the non-display area in a one-to-one mode, in structures Petition 870250085608, dated 09 / 22 / 2025, page 9 / 70 4 / 35 parallel with a plurality of data lines or with a plurality of fan-shaped lines.

[0013] In one embodiment, the plurality of test switching elements is connected to a plurality of gate lines formed in the display area or to a plurality of power lines extending to the non-display area, in a one-to-one mode, in parallel structures with the plurality of gate lines or with the plurality of power lines. EFFECTS OF THE INVENTION

[0014] A display device, according to an embodiment of the present invention, can prevent current and voltage leakage in lines and pixels of a display panel by altering a design so that the test switching elements formed in the display panel are stably maintained in an off state, even after the display panel has been marketed.

[0015] Furthermore, the display device, according to one embodiment of the present invention, can prevent an image display defect due to voltage and current leakage and increase the reliability of a product by controlling the test switching elements of the display panel so that they are stably maintained in the off state.

[0016] The effects of the present invention are not limited to the effects mentioned above, and several other effects are included in this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view illustrating a display device according to a first embodiment;

[0018] Figure 2 is a plan view illustrating the display device according to a first embodiment; Petition 870250085608, dated 09 / 22 / 2025, page 10 / 70 5 / 35

[0019] Figure 3 is a plan view illustrating a display device according to a second embodiment;

[0020] Figure 4 is a side view illustrating the display device according to the first and second embodiments;

[0021] Figure 5 is a schematic layout diagram illustrating an example of a display panel according to a first embodiment illustrated in Figures 1 and 2;

[0022] Figure 6 is a schematic layout diagram illustrating an example of a display panel according to a second embodiment illustrated in Figure 3;

[0023] Figure 7 is a schematic circuit diagram of a first embodiment illustrating test switching elements formed in a test switching element area;

[0024] Figure 8 is a waveform diagram illustrating the switching control signals supplied to the test switching elements of Figure 7 and changes in magnitude of data line voltage;

[0025] Figure 9 is a schematic circuit diagram of a second embodiment illustrating test switching elements formed in a test switching element area;

[0026] Figure 10 is a waveform diagram illustrating the switching control signals supplied to the test switching elements of Figure 9 and changes in voltage magnitude of data lines;

[0027] Figure 11 is a schematic circuit diagram of a third embodiment illustrating the test switching elements formed in a test switching element area;

[0028] Figure 12 is a waveform diagram illustrating the switching control signals supplied to the test switching elements of Figure 11 and changes in line voltage magnitude. Petition 870250085608, dated 09 / 22 / 2025, page 11 / 70 6 / 35 of the data;

[0029] Figures 13 and 14 are perspective views illustrating a display device according to another embodiment of the present invention; and

[0030] Figures 15 and 16 are perspective views illustrating a display device according to yet another embodiment of the present invention. DETAILED DESCRIPTION OF PREFERRED MODALITIES

[0031] The present invention will be described more fully below, with reference to the accompanying drawings, in which preferred embodiments of the description are shown. This description may, however, be embodied in different forms and should not be interpreted as limited to the embodiments presented herein. Rather, these embodiments are provided so that this description is comprehensive and complete and fully conveys the scope of the description to those skilled in the art.

[0032] It will also be understood that when a layer is referred to as being on top of another layer or substrate, it may be directly on top of the other layer or substrate, or intervening layers may also be present. The same part numbers indicate the same components throughout the specification.

[0033] It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element discussed below could be called a second element without departing from the teachings of the present invention. Similarly, the second element could also be called a first element.

[0034] Each of the characteristics of the various modalities of Petition 870250085608, dated 09 / 22 / 2025, p. 12 / 70 7 / 35 The present invention can be combined or combined with each other, in part or in whole, and technically various interlocks and actuations are possible. Each embodiment can be implemented independently of the other or can be implemented together in an association.

[0035] From here on, specific modalities will be described with reference to the accompanying drawings.

[0036] Figure 1 is a perspective view illustrating a display device according to a first embodiment, and Figure 2 is a plan view illustrating the display device according to a first embodiment. Furthermore, Figure 3 is a plan view illustrating a display device according to a second embodiment.

[0037] Referring to Figures 1 and 2, a display device 10, according to one embodiment, can be applied to portable electronic devices, such as mobile phones, smartphones, tablet personal computers (PCs), mobile communication terminals, electronic organizers, e-books, portable multimedia players (PMPs), navigation devices and ultra-mobile PCs (UMPCs). Furthermore, the display device 10, according to one embodiment, can be applied to wearable devices, such as smartwatches, watch phones, eyeglass-type displays and head-mounted displays (HMDs).

[0038] Furthermore, referring to Figure 3, the display device 10, according to one embodiment, can be applied to portable electronic devices, such as mobile phones, smartphones, tablet PCs, mobile communication terminals, electronic organizers, e-books, PMPs, navigation devices and UMPCs. Furthermore, the display device 10, according to one embodiment, can be applied Petition 870250085608, dated 09 / 22 / 2025, page 13 / 70 8 / 35 to a central information display (CID) located in an instrument panel, center strip or dashboard of a vehicle, to an ambient mirror display that replaces a side view mirror of the vehicle or to a display located on a rear surface of a front seat as entertainment for a rear seat of the vehicle.

[0039] The display device 10, according to an embodiment, can be variously classified according to a display method. For example, the display device 10 can be a light-emitting display device, such as an organic light-emitting display device that uses organic light-emitting diodes, a quantum dot light-emitting display device that includes quantum dot light-emitting layers, an inorganic light-emitting display device that includes inorganic semiconductors, and a micro light-emitting display device that uses micro or nano light-emitting diodes (micro LEDs or nano LEDs).From here on, it is mainly described that display device 10 according to one embodiment is an organic light-emitting display device, but display device 10 is not limited to organic light-emitting display devices and may be other display devices mentioned above or well-known in the art without departing from the technical idea.

[0040] The display device 10, according to one embodiment, includes a display panel 100, a display drive circuit 200, a circuit board 300 and a touch drive circuit 400.

[0041] Display panel 100 can be formed in a rectangular shape, in plan view, having short sides in a first direction (X-axis geometric direction) and long sides in a second direction (Y-axis geometric direction) that intersect the first direction (X-axis geometric direction). One corner where the short side in the first direction Petition 870250085608, dated 09 / 22 / 2025, page 14 / 70 The 9 / 35 (X-axis geometric direction) and the long side in the second direction (Y-axis geometric direction) where they meet can be rounded with a predetermined curvature or at a right angle. A display panel 100 shape in plan view is not limited to a rectangular shape and can have other polygonal shapes, a circular shape, or an elliptical shape. The display panel 100 can be formed to be flat, but is not limited to this. For example, the display panel 100 includes curved surface portions formed at the left and right ends thereof, having either a constant curvature or a variable curvature. Furthermore, the display panel 100 can be flexibly formed to be curved, bent, folded, or rolled.

[0042] Display panel 100 includes a main MA area and a sub-area SBA.

[0043] The main area MA includes a display area DA, which displays an image, and a non-display area DA, which is a peripheral area of ​​the display area DA. The display area DA includes pixels that display an image. The non-display area NDA may be a peripheral area of ​​the display area DA, that is, an area outside the display area DA. The non-display area NDA may be defined as an edge area of ​​the main area MA, which corresponds to the display area DA of display panel 100. As illustrated in Figure 3, the non-display area NDA may include at least one gate driver 210 that supplies gate signals to the gate lines and fan lines (not shown) connecting the display driver circuit 200 and the display area DA to each other.

[0044] The SBA subarea may project and extend from one side of the main MA area in the second direction (Y-axis geometric direction). The SBA subarea may include a flexible material that can be curved, bent, and rolled. The SBA subarea may include the display drive circuit 200 and block parts connected to the circuit board 300. Petition 870250085608, dated 09 / 22 / 2025, page 15 / 70 10 / 35 Alternatively, the SBA subarea can be omitted, and the display drive circuit 200 and block parts can be arranged in the non-display NDA area.

[0045] Figure 4 is a side view illustrating the display device according to the first and second embodiments.

[0046] It was illustrated in Figures 1 to 3 that the SBA subarea is not curved, but the SBA subarea can be curved, as illustrated in Figure 4, and when the SBA subarea is curved, the SBA subarea can be arranged in a rear surface direction of the display panel 100. In other words, when the SBA subarea is curved, the SBA subarea can overlap a SUB substrate in a thickness direction (Z-axis geometric direction). The display drive circuit 200 can be arranged in the SBA subarea.

[0047] In addition, the display panel 100 includes a display module DU, which includes a substrate SUB, a thin-film transistor layer TFTL, a light-emitting element layer EML and a encapsulation layer TFEL, and a touch detection unit TSU formed on a front surface of the display module DU.

[0048] The SUB substrate can be a base substrate or a base member. The SUB substrate can be a planar type substrate. Alternatively, the SUB substrate can be a flexible substrate that can be curved, bent, and rolled.

[0049] The TFTL thin-film transistor layer is arranged on the SUB substrate. The TFTL thin-film transistor layer may include a plurality of thin-film transistors that constitute a pixel circuit for each of the pixels. The TFTL thin-film transistor layer may also include gate lines, data lines, power lines, gate control lines, fan lines connecting the 400 display drive circuit and the data lines to each other, and Petition 870250085608, dated 09 / 22 / 2025, page 16 / 70 11 / 35 conductor lines connecting the display drive circuit 400 and the block parts to each other. When gate drivers 210 are formed on one side and the other side of the non-display NDA area of ​​display panel 100, respectively, the respective gate drivers 210 may also include thin-film transistors.

[0050] The TFTL thin-film transistor layer can be selectively arranged in the DA display area, the NDA non-display area, and the SBA subarea. The thin-film transistors of each pixel, the gate lines, the data lines, and the power lines of the TFTL thin-film transistor layer can be arranged in the DA display area. The gate control lines and the fan lines of the TFTL thin-film transistor layer can be arranged in the NDA non-display area.

[0051] The EML light-emitting element layer can be arranged over the TFTL thin-film transistor layer. The EML light-emitting element layer can include a plurality of light-emitting elements in which a first electrode, a light-emitting layer, and a second electrode are sequentially stacked to emit light, and a pixel-defining film that defines the respective pixels. The EML light-emitting element layer can be arranged in the DA display area of ​​the MA main area.

[0052] The TFEL encapsulation layer can cover the top and side surfaces of the light-emitting element layer (EML) and can protect the light-emitting element layer (EML). The TFEL encapsulation layer can be placed in the display area (DA) and the non-display area (NDA) of the main area (MA). The TFEL encapsulation layer includes at least one inorganic layer and at least one organic layer to encapsulate the light-emitting element layer. Petition 870250085608, dated 09 / 22 / 2025, page 17 / 70 12 / 35

[0053] The TSU touch detection unit can be formed on the TFEL encapsulation layer or mounted on the TFEL encapsulation layer. The TSU touch detection unit can be arranged in the DA display area of ​​the MA main area. The TSU touch detection unit can detect the touch of a person or object using touch electrodes. In the TSU touch detection unit, the touch electrodes can be arranged in a matrix structure to detect the user's touch using a self-capacitance mode or a mutual capacitance mode.

[0054] The TSU touch detection unit may not be integrally formed with the display panel 100 and may be disposed on a separate substrate or film disposed over the display module DU of the display panel 100. In this case, the substrate or film supporting the TSU touch detection unit may be a base member that encapsulates the display module DU.

[0055] A cover window to protect an upper portion of the display panel 100 may be disposed over the TSU touch detection unit. The cover window may be fixed over the TSU touch detection unit by a transparent adhesive member, such as an optically transparent adhesive film (OCA) or an optically transparent resin (OCR). The cover window may be made of an inorganic material, such as glass, or it may be made of an organic material, such as plastic or a polymer material. In order to prevent deterioration of image visibility due to external light reflection, a polarizing layer may additionally be disposed between the TSU touch detection unit and the cover window.

[0056] The display drive circuit 200 can generate signals and voltages to drive the display panel 100. The display drive circuit 200 can be formed as an integrated circuit. Petition 870250085608, dated 09 / 22 / 2025, page 18 / 70 13 / 35 (IC) and fixed onto display panel 100 in a chip-on-glass (COG) mode, a chip-on-plastic (COP) mode, or an ultrasonic bonding mode, but is not limited to these. For example, display drive circuit 200 can be fixed onto circuit board 300 in a chip-on-film (COF) mode.

[0057] Circuit board 300 can be fixed to one end of the SBA subarea of ​​display panel 100. For this reason, circuit board 300 can be electrically connected to display panel 100 and display drive circuit 200. Display panel 100 and display drive circuit 200 can receive digital video data, timing signals, and drive voltages through circuit board 300. Circuit board 300 can be a flexible printed circuit board, a printed circuit board, or a flexible film, such as a chip-on-film.

[0058] The touch drive circuit 400 can be arranged on the circuit board 300. The touch drive circuit 400 can be formed as an integrated circuit (IC) and fixed to the circuit board 300.

[0059] The 400 touch drive circuit can be electrically connected to the touch electrodes of the TSU touch detection unit. The 400 touch drive circuit applies touch drive signals to the touch electrodes of the TSU touch detection unit and measures a change in the amount of charge in mutual capacitance of each of a plurality of touch nodes formed by the touch electrodes. Specifically, the 400 touch drive circuit measures the changes in capacitance of the plurality of touch nodes according to changes in the magnitude of voltage or the amount of current of touch detection signals received through the touch electrodes. In this way, the drive circuit Petition 870250085608, dated 09 / 22 / 2025, page 19 / 70 14 / 35 Touch detection 400 can determine whether a user has touched the display device, whether the user has moved closer to the display device, and similar factors, based on the amount of load variation in the mutual capacitance of each of the plurality of touch nodes. User touch indicates that the user's finger or an object, such as a pen, makes direct contact with a surface of the cover window located on the TSU touch detection unit. User approach indicates that the user's finger or the object, such as the pen, hovers over a surface of the cover window at a predetermined interval from that surface.

[0060] Figure 5 is a schematic layout diagram illustrating an example of a display panel according to a first embodiment illustrated in Figures 1 and 2. Furthermore, Figure 6 is a schematic layout diagram illustrating an example of a display panel according to a second embodiment illustrated in Figure 3. Specifically, Figures 5 and 6 are layout diagrams illustrating a DA display area and a non-DA display area of ​​the DU display module in a state before the TSU touch detection unit is formed.

[0061] The DA display area is an area that displays an image and can be defined as a central area of ​​the display panel 100. The DA display area can include a plurality of SP pixels, a plurality of GL gate lines, a plurality of DL data lines, and a plurality of VL power lines. Each of the SP pixel plurality can be defined as a minimum unit that emits light.

[0062] The plurality of GL gate lines can supply gate signals, for example, scan signals, received from gate driver 201 for the SP pixel plurality. The plurality of GL gate lines can extend in the geometric X-axis direction and can be Petition 870250085608, dated 09 / 22 / 2025, p. 20 / 70 15 / 35 spaced apart from each other in the direction of the geometric Y-axis, which intersects the direction of the geometric X-axis.

[0063] The plurality of DL data lines can supply data voltages received from the display drive circuit 200 to the plurality of SP pixels. The plurality of DL data lines can extend in the Y geometric axis direction and can be spaced from each other in the X geometric axis direction.

[0064] The plurality of VL power lines can supply source voltages received from the 200 display drive circuit to the plurality of SP pixels. Here, the source voltage can be at least one of a drive voltage, a startup voltage, and a reference voltage. The plurality of VL power lines can extend in the Y geometric axis direction and can be spaced from each other in the X geometric axis direction.

[0065] Areas without NDA display may surround the DA display area. The area without NDA display may include gate driver 201, FOL fan lines, and GCL gate control lines. Gate driver 201 may generate a plurality of gate signals based on gate control signals and may sequentially supply the plurality of gate signals to the plurality of GL gate lines, according to a defined order.

[0066] The FOL fan lines can extend from the display drive circuit 200 to the display area DA. The FOL fan lines can supply the data voltages received from the display drive circuit 200 to the plurality of DL data lines.

[0067] The GCL gate control lines can extend from the display drive circuit 200 to the gate driver 201. The GCL gate control lines can supply the gate control signals received from the display drive circuit 200 to the gate driver 201. Petition 870250085608, dated 09 / 22 / 2025, page 21 / 70 16 / 35

[0068] The SBA subarea may include the display drive circuit 200, a DPA display block area (page 8), and the first and second touch block areas TPA1 and TPA2. The DPA display block area may include at least one display block (DP). The first and second touch block areas TPA1 and TPA2 may each include at least one first touch block TP1 and at least one second touch block TP2.

[0069] Display drive circuit 200 can output signals and voltages to drive display panel 100 via FOL fan lines. Display drive circuit 200 can supply data voltages to DL data lines via FOL fan lines. Data voltages can be supplied to SP pixel plurality and can determine the luminance of SP pixel plurality. Display drive circuit 200 can supply gate control signals to gate driver 201 via GCL gate control lines.

[0070] The DPA display block area, the first TPA1 touch block area, and the second TPA2 touch block area may be arranged on an edge of the SBA subarea. The DPA display block area, the first TPA1 touch block area, and the second TPA2 touch block area may be electrically connected to the circuit board 300 using a low-resistance, high-reliability material, such as an anisotropic conductive layer or a self-assembling anisotropic conductive paste (SAP).

[0071] The DPA display block area may include a plurality of display block parts. The plurality of display block parts may be connected to the display drive circuit 200 or the touch drive circuit 400 via the circuit board 300. The plurality of display block parts may be connected to the circuit board 300 to receive digital video data and Petition 870250085608, dated 09 / 22 / 2025, page 22 / 70 17 / 35 can supply digital video data to the 200 display drive circuit.

[0072] A TSD test switching element area, formed and used in order to test the display panel 100 before the display panel 100 is marketed, included in the non-display area NDA or in the SBA subarea of ​​the display panel 100.

[0073] A plurality of TSn test switching elements, electrically connected respectively to the plurality of DL data lines formed in the DA display area or in the NDA non-display area, or the FOL fan lines connected to the plurality of DL data lines, are arranged in the TSD test switching element area.

[0074] In addition, electrically connected test switching elements, respectively, to the plurality of GL port lines and VL power lines formed in the DA display area or the NDA non-display area may be additionally formed in the TSD test switching element area. Such TSn test switching elements formed in the TSD test switching element area may be connected to at least one of the plurality of DL data lines or FOL fan lines, the plurality of GL port lines and the VL power lines formed in the DA display area or the NDA non-display area in a one-to-one manner.

[0075] As described above, in a test step prior to the display panel 100 being marketed, a test device connects the TSn test switching elements formed in the non-display NDA area or in the SBA subarea of ​​the display panel 100 and supplies scan voltages to the GL port lines via the TSn test switching elements. Alternatively, the test device may also supply the port control signals to the port driver 210. Petition 870250085608, dated 09 / 22 / 2025, page 23 / 70 18 / 35 In addition, the test device also supplies high-potential and low-potential drive voltages to the VL power line, respectively. Furthermore, the test device also connects the TSn test switching elements, connected respectively to the plurality of DL data lines or the FOL fan lines, and supplies test data voltages to the DL data lines through the TSn test switching elements to allow all SP pixels to emit light.

[0076] After a good product has been decided upon through testing, the display drive circuit 200 is mounted in the non-display NDA area, in the SBA sub-area, or similar, of the display panel 100, and the circuit board 300, the touch drive circuit 400 and similar are arranged.

[0077] The display drive circuit 200 controls the shutdown operations of the test switching elements TSn, so that all test switching elements TSn are maintained in an off state in a commercialized state of the display panel 100, in which the display drive circuit 200, the touch drive circuit 400 and the like are formed. That is, in an off state of the display panel 100, as well as the display device 10, all test switching elements TSn are also in an off state. On the other hand, when the display panel 100, as well as the display device 10, are switched on, the display drive circuit 200 supplies the gate control signals to the gate driver 210 and supplies the data voltages to the distribution lines *FOL(page 6) to drive all the SP pixels.That is, during an image display period in which display device 10 is switched on, display drive circuit 200 activates all SP pixels to display an image in the DA display area. Meanwhile, during this image display period, the circuit... Petition 870250085608, dated 09 / 22 / 2025, page 24 / 70 The 19 / 35 display drive 200 controls the shutdown operations of the TSn test switching elements to maintain all TSn test switching elements in a stable shutdown state.

[0078] All TSn test switching elements are in a state where they are electrically connected to DL data lines, DL power lines, or GL gate lines and can thus be electrically affected by changes in the voltage and current of the lines to which they are connected, respectively. Consequently, when all TSn test switching elements are not maintained in a stable off state, a problem such as voltage or current leakage through the TSn test switching elements may occur. Consequently, the display drive circuit 200 must control the off operations of the TSn test switching elements so that the TSn test switching elements are more stably maintained in the off state, even if the TSn test switching elements are electrically affected by specific lines, respectively.

[0079] Figure 7 is a schematic circuit diagram of a first embodiment illustrating test switching elements formed in a test switching element area.

[0080] Referring to Figure 7, first up to the nth test switching elements TS1 to TSn, connected to the first to nth data lines DL1 to DLn, extending to the display area DA or the non-display area NDA in a one-to-one mode, are arranged in the test switching element area TSD. Here, n is a positive integer excluding 0.

[0081] As described above, the test switching elements Petition 870250085608, dated 09 / 22 / 2025, p. 25 / 70 20 / 35 Test switching elements (TSn) in the TSD test switching element area can be connected to at least one of the fan lines (FOL), the plurality of gate lines (GL), and the power lines (VL), extending to the display area (DA) or the non-display area (NDA) in a one-to-one manner. However, hereafter, for convenience of detailed explanation, an example in which the test switching elements (TSn) are connected to the data lines (DL) in a one-to-one manner will be described.

[0082] The first up to the TS1 test switching elements a TSn are electrically connected to the first to nth data lines DL1 to DLn, respectively, in parallel structures with the first to nth data lines DL1 to DLn. The first to nth test switching elements TS1 to TSn can be formed as thin-film transistors, such as metal-oxide-semiconductor field-effect transistors (MOSFETs).

[0083] The first electrodes of the first to n test switching elements TS1 to TSn are connected to the first to n data lines DL1 to DLn in a one-to-one manner, and the second electrodes of the first to n test switching elements TS1 to TSn are connected to a first line terminal VLT1, to which a test DC voltage (or a test data voltage) or a first shutdown control signal (e.g., a first idle gate voltage) is supplied. Furthermore, the gate electrodes of the first to n test switching elements TS1 to TSn are connected to a second line terminal VLT2 to which an active gate signal or a second shutdown control signal (e.g., a second idle gate voltage) is supplied.

[0084] The first up to the TS1 test switching elements a Petition 870250085608, dated 09 / 22 / 2025, page 26 / 70 21 / 35 TSn can be formed as N-type NMOSFETs, and the first electrode of each from the first to the n test switching elements TS1 to TSn can be a drain electrode, and the second electrode of each from the first to the n test switching elements TS1 to TSn can be a source electrode.

[0085] During a test period of display panel 100, the first up to the nthe test switching elements TS1 to TSn can be switched on in response to the active gate signal input to the respective gate electrodes and can supply the DC test voltage input to the second electrodes, to the respective data lines DL1 to DLn, to which the first electrodes are connected.

[0086] On the other hand, during an image display period in a state in which the display panel 10 is marketed, the first to the test switching elements TS1 to TSn are maintained in an off state by the second shutdown control signal (e.g., the second idle gate control signal) inserted into the respective gate electrodes. In this case, the first shutdown control signal (e.g., the first idle gate voltage) can be supplied to the first electrodes. The first to the test switching elements TS1 to TSn can be maintained in a stable off state, so that the data voltages of the data lines DL1 to DLn are not leaked, even if the magnitudes of the data voltages of the data lines DL1 to DLn respectively connected to the first electrodes are changed.

[0087] Meanwhile, when the first to nthelementos de mudar de teste TS1 a TSn are connected to the respective GL port lines and VL power lines, the first electrodes of the first to nthelementos de mudar de teste TS1 a TSn can be connected to the respective GL port lines and VL power lines in a one-to-one mode. In this case, the second electrodes of the first Petition 870250085608, dated 09 / 22 / 2025, p. 27 / 70 22 / 35 up to the nthelementos de mudar de teste TS1 a TSn can be connected to the first line terminal VLT1, to which a scan voltage or the first shutdown control signal (e.g., the first idle gate voltage) is supplied. Additionally, the gate electrodes from the first to the nthelementos de mudar de teste TS1 a TSn can be connected to the second line terminal VLT2, to which the active gate signal or the second shutdown control signal (e.g., the second idle gate voltage) is supplied.

[0088] Figure 8 is a waveform diagram illustrating the switching control signals supplied to the test switching elements of Figure 7 and changes in the magnitude of data line voltage.

[0089] Referring to Figure 8, during a test period prior to the display panel 100 being marketed, the test device supplies a test DC voltage TVI (e.g., a test data voltage of 10 V) to the second electrodes from the first to the test switching elements TS1 to TSn via the first line terminal VLT1 of the display panel 100. Additionally, the test device supplies an active gate signal (e.g., an 8 V DC voltage) to the gate electrodes from the first to the test switching elements TS1 to TSn via the second line terminal VLT2 of the display panel 100.

[0090] The first up to the TS1 test switching elements TSn can be connected by the active gate signal supplied to the gate electrodes and can supply the DC test voltage input TVI to the second electrodes for the respective data lines DL1 to DLn to which the first electrodes are connected.

[0091] Subsequently, during a period when the panel of exi Petition 870250085608, dated 09 / 22 / 2025, p. 28 / 70 23 / 35 display 100 is marketed and displays an image, the display drive circuit 200 can maintain the second electrodes from the first to the test switching elements *TS1 to TSn (page 12) in a floating state (e.g., a 0 V state) through the first line terminal VLT1 of the display panel 100 or supply a first shutdown control signal LV1 (e.g., a first idle gate voltage of 0 V) ​​to the first line terminal VLT1. Additionally, the display drive circuit 200 shuts down the first to test switching elements TS1 to TSn by supplying a second shutdown control signal (e.g., a second idle gate voltage of -3 V) to the gate electrodes from the first to test switching elements TS1 to TSn through the second line terminal VLT2 of the display panel 100.

[0092] During an image display period, the display drive circuit 200 supplies image display data voltages to the respective data lines DL1 to DLn connected to the first test switching elements TS1 to TSn in parallel in units of at least one frame period.

[0093] During the image display period, the display drive circuit 200 can supply the second shutdown control signal (e.g., the second idle gate voltage of -3 V) which has a lower voltage magnitude than the first shutdown control signal (e.g., the first idle gate voltage of 0 V) ​​to the gate electrodes from the first to the test switching elements TS1 to TSn.

[0094] The display drive circuit 200 can maintain all TSn test switching elements in a stable off state by controlling the off switching operations of the TSn test switching elements using the second off control signal (e.g., the second voltage of Petition 870250085608, dated 09 / 22 / 2025, page 29 / 70 24 / 35 idle gate (-3 V) which has a voltage magnitude lower than the first shutdown control signal (e.g., the first idle gate voltage of 0 V) ​​during the image display period.

[0095] Figure 9 is a schematic circuit diagram of a second embodiment illustrating test switching elements formed in a test switching element area.

[0096] As described above, the test switching elements TSn in the TSD test switching element area can be connected to at least one of the FOL fan lines, the plurality of GL port lines, and the VL power lines extending to the DA display area or the NDA non-display area in a one-to-one fashion. Furthermore, as illustrated in Figure 9, the first to n test switching elements TS1 to TSn, connected to the first to n data lines DL1 to DLn, extending to the DA display area or the NDA non-display area, in a one-to-one fashion, can be arranged in the TSD test switching element area.

[0097] Referring to Figure 9, the first electrodes from the first to the nth test switching elements TS1 to TSn are connected to the first to the nth data lines DL1 to DLn, in a one-to-one manner, and the second electrodes from the first to the nth test switching elements TS1 to TSn are connected to a first line terminal VLT1, to which a test DC voltage (or a test data voltage) or a first shutdown control signal (e.g., a first idle gate voltage) is supplied.

[0098] The first and second gate electrodes of the first up to the test switching elements TS1 to TSn can be formed as double layers, overlapping each other with at least one interlayer insulating layer between them. Consequently, Petition 870250085608, dated 09 / 22 / 2025, p. 30 / 70 25 / 35 The first gate electrodes from the first to the n test switching elements TS1 to TSn are connected to a second line terminal VLT2, to which an active gate signal or a second shutdown control signal (e.g., a second idle gate voltage) is supplied. Furthermore, the second gate electrodes from the first to the n test switching elements TS1 to TSn are connected to a DC voltage line terminal VDT, to which a third shutdown control signal (e.g., a third idle gate voltage) with a predefined DC voltage magnitude is supplied.

[0099] Meanwhile, when the first to n test switching elements TS1 to TSn are connected to the respective GL gate lines and VL power lines, the first electrodes of the first to n test switching elements TS1 to TSn can be connected to the respective GL gate lines and VL power lines in a one-to-one mode. In this case, the second electrodes of the first to n test switching elements TS1 to TSn can be connected to the first line terminal VLT1, to which a test scan voltage or the first shutdown control signal (e.g., the first idle gate voltage) is supplied. Furthermore, the first gate electrodes of the first to n test switching elements TS1 to TSn can be connected to the second line terminal VLT2, to which the active gate signal or the second shutdown control signal (e.g., the second idle gate voltage) is supplied.Furthermore, the second gate electrodes from the first to the test switching elements TS1 to TSn are connected to the DC voltage line terminal VDT, to which the third shutdown control signal (e.g., the third idle gate voltage) which has a predefined DC voltage magnitude is supplied.

[0100] Figure 10 is a waveform diagram illustrating the Petition 870250085608, dated 09 / 22 / 2025, page 31 / 70 26 / 35 switching control signals supplied to the test switching elements of Figure 9 and the changes in the magnitude of data line voltage.

[0101] Referring to Figure 10, during a test period prior to the display panel 100 being marketed, the test device supplies a test DC voltage TVI (e.g., a test data voltage of 10 V) to the second electrodes from the first to the test switching elements TS1 to TSn via the first line terminal VLT1 of the display panel 100. Additionally, the test device supplies an active gate signal (e.g., an 8 V DC voltage) to the first gate electrodes from the first to the test switching elements TS1 to TSn via the second line terminal VLT2 of the display panel 100.

[0102] The first up to the TS1 test switching elements TSn can be switched on by the active gate signal supplied to the first gate electrodes and can supply the input DC test voltage TVI to the second electrodes, to the respective data lines DL1 to DLn, to which the first electrodes are connected. A DC voltage that has a predefined magnitude of approximately 0 V can be supplied to the second gate electrodes from the first to the test switching elements TS1 to TSn through the DC voltage line terminal VDT.

[0103] During a period when display panel 100 is marketed and displays an image, display drive circuit 200 can keep the second electrodes from the first to the test switching elements *TS1 to TSn(page 3) in a floating state (e.g., a 0 V state) through the first line terminal VLT1 of display panel 100 or supply a first shutdown control signal LV1 (e.g., a first idle gate voltage of 0 V) ​​to the first line terminal VLT1. Petition 870250085608, dated 09 / 22 / 2025, page 32 / 70 27 / 35

[0104] The display drive circuit 200 switches off the first up to the test switching elements TS1 to TSn, supplying a second shutdown control signal (e.g., a second idle gate voltage of -3 V) to the first gate electrodes of the first up to the test switching elements TS1 to TSn via the second line terminal VLT2 of the display panel 100. Specifically, the display drive circuit 200 can supply the second shutdown control signal (e.g., the second idle gate voltage of -3 V) which has a lower voltage magnitude than the first shutdown control signal (e.g., the first idle gate voltage of 0 V) ​​to the first gate electrodes of the first up to the test switching elements TS1 to TSn.

[0105] In addition, the display drive circuit 200 can stably maintain the voltage fluctuations of the first and second gate electrodes by supplying a third shutdown control signal (e.g., a third idle gate voltage of 3 V) which has a predefined DC voltage magnitude for the second gate electrodes from the first to the test switching elements TS1 to TSn.

[0106] Figure 11 is a schematic circuit diagram of a third embodiment illustrating test switching elements formed in a test switching element area.

[0107] Referring to Figure 11, the first electrodes of the first to n test switching elements TS1 to TSn are connected to the first to n data lines DL1 to DLn in a one-to-one manner, and the second electrodes of the first to n test switching elements TS1 to TSn are connected to a first line terminal VLT1, to which a test DC voltage (or a test data voltage) or a first shutdown control signal (by Petition 870250085608, dated 09 / 22 / 2025, p. 33 / 70 28 / 35 example, an initial idle gate voltage) is supplied.

[0108] The first and second gate electrodes of the first to n test switching elements TS1 to TSn can be formed as double layers, overlapping each other, with at least one interlayer insulating layer interposed between them. Consequently, the first gate electrodes of the first to n test switching elements TS1 to TSn are connected to a second line terminal VLT2, to which an active gate signal or a second shutdown control signal (e.g., a second idle gate voltage) is supplied. Furthermore, the second gate electrodes of the first to n test switching elements TS1 to TSn are connected to an alternating current (AC) voltage line terminal ADT, to which a third shutdown control signal (e.g., a third idle gate voltage) oscillating within a predefined voltage range and having an AC voltage magnitude is supplied.

[0109] Figure 12 is a waveform diagram illustrating the switching control signals supplied to the test switching elements of Figure 11 and the changes in the magnitude of data line voltage.

[0110] During a period when display panel 100 is marketed and displays an image, display drive circuit 200 can keep the second electrodes from the first to the test switching element *TS1 to TSn(page 15) in a floating state (e.g., a 0 V state) through the first line terminal VLT1 of display panel 100 or supply a first shutdown control signal LV1 (e.g., a first inactive 0 V gate) to the first line terminal VLT1.

[0111] The display drive circuit 200 switches off the first until the test switching elements TS1 to TSn supply a second shutdown control signal (e.g., a second Petition 870250085608, dated 09 / 22 / 2025, page 34 / 70 29 / 35 idle gate voltage of -3 V) to the first gate electrodes of the first up to the test switching elements TS1 to TSn via the second line terminal VLT2 of the display panel 100. Specifically, the display drive circuit 200 can supply the second shutdown control signal (e.g., the second idle gate voltage of -3 V) which has a lower voltage magnitude than the first shutdown control signal (e.g., the first idle gate voltage of 0 V) ​​to the first gate electrodes of the first up to the test switching elements TS1 to TSn.

[0112] Furthermore, the display drive circuit 200 can stably maintain the voltages of the first and second gate electrodes, so that the voltages of the first and second gate electrodes fluctuate only within a predefined range, supplying a third AV shutdown control signal (e.g., a third idle gate voltage that oscillates in the range of -3 V to 3 V), which oscillates within a predefined voltage range and which has an AC voltage magnitude for the second gate electrodes from the first to the test switching elements TS1 to TSn.

[0113] Figures 13 and 14 are perspective views illustrating a display device according to another embodiment of the present invention.

[0114] It has been illustrated in Figures 13 and 14 that a display device 10 is a foldable display device, folded in the first direction (geometric axis X direction). The display device 10 can be maintained in both a folded and an unfolded state. The display device 10 can be folded in an inward folding mode, in which a front surface thereof is disposed inward. When the display device 10 is curved or folded in the inward folding mode, the front surfaces of Petition 870250085608, dated 09 / 22 / 2025, page 35 / 70 30 / 35 display devices 10 can be arranged to face each other. Alternatively, the display device 10 can be folded in an outward folding mode, in which a front surface thereof is arranged outwards. When the display device 10 is bent or folded in outward folding mode, the rear surfaces of the display device 10 can be arranged to face each other.

[0115] A first non-foldable area NFA1 can be arranged on one side, for example, the right side, of a foldable area FDA. A second non-foldable area NFA2 can be arranged on the other side, for example, the left side, of the foldable area FDA. The touch detection units TSU, according to one embodiment of the present invention, can be formed and arranged in the first non-foldable area NFA1 and in the second non-foldable area NFA2, respectively.

[0116] A first folding line FOL1 and a second folding line FOL2 can extend in the second direction (Y-axis geometric direction), and the display device 10 can be folded in the first direction (X-axis geometric direction). For this reason, the length of the display device 10 in the first direction (X-axis geometric direction) can be reduced by approximately half, and thus, a user can conveniently carry the display device 10.

[0117] Meanwhile, an extension direction of the first folding line FOL1 and an extension direction of the second folding line FOL2 are not limited to the second direction (Y-axis geometric direction). For example, the first folding line FOL1 and the second folding line FOL2 can extend in the first direction (X-axis geometric direction), and the display device 10 can be folded in the second direction (Y-axis geometric direction). In this case, a length of the display device 10 in the second direction Petition 870250085608, dated 09 / 22 / 2025, page 36 / 70 31 / 35 (Y-axis geometric direction) can be reduced by approximately half. Alternatively, the first folding line FOL1 and the second folding line FOL2 can extend in a diagonal direction from the display device 10, which corresponds to a direction between the first direction (X-axis geometric direction) and the second direction (Y-axis geometric direction). In this case, the display device 10 can be folded into a triangular shape.

[0118] When the first folding line FOL1 and the second folding line FOL2 extend in the second direction (Y-axis geometric direction), a length of the foldable area FDA in the first direction (X-axis geometric direction) can be less than a length of the foldable area FDA in the second direction (Y-axis geometric direction). Furthermore, a length of the first non-foldable area NFA1 in the first direction (X-axis geometric direction) can be greater than the length of the foldable area FDA in the first direction (X-axis geometric direction). A length of the second non-foldable area NFA2 in the first direction (X-axis geometric direction) can be greater than the length of the foldable area FDA in the first direction (X-axis geometric direction).

[0119] A first display area DA1 can be arranged on a front surface of the display device 10. The first display area DA1 can overlap the foldable area FDA, the first non-foldable area NFA1, and the second non-foldable area NFA2. Therefore, when the display device 10 is unfolded, an image can be displayed in a front surface direction on the foldable area FDA, the first non-foldable area NFA1, and the second non-foldable area NFA2 of the display device 10.

[0120] A second DA2 display area can be arranged on a rear surface of the display device 10. The second DA2 display area can overlap the second non-folding NFA2 area. Petition 870250085608, dated 09 / 22 / 2025, page 37 / 70 32 / 35 Therefore, when the display device 10 is folded, an image can be displayed in a front surface direction on the second non-foldable area NFA2 of the display device 10.

[0121] It has been illustrated in Figures 13 and 14 that a through hole TH, in which a camera or similar is formed, is disposed in the first non-foldable area NFA1, but the present invention is not limited to this. The through hole TH or the camera may be disposed in the second non-foldable area NFA2 or in the foldable area FDA.

[0122] Figures 15 and 16 are perspective views illustrating a display device according to yet another embodiment of the present invention.

[0123] It has been illustrated in Figures 15 and 16 that a display device 10 is a foldable display device, folded in the second direction (Y-axis geometric direction). The display device 10 can be maintained in both a folded and an unfolded state. The display device 10 can be folded in an inward folding mode, in which a front surface thereof is arranged inward. When the display device 10 is bent or folded in the inward folding mode, the front surfaces of the display device 10 can be arranged to face each other. Alternatively, the display device 10 can be folded in an outward folding mode, in which a front surface thereof is arranged outward. When the display device 10 is bent or folded in the outward folding mode, the rear surfaces of the display device 10 can be arranged to face each other.

[0124] Display device 10 may include a foldable area FDA, a first non-folding area NFA1 and a second non-folding area NFA2. The foldable FDA area may be an area where the display device 10 is folded, and the first non-folding area NFA1 and Petition 870250085608, dated 09 / 22 / 2025, page 38 / 70 33 / 35 The second non-foldable area NFA2 can be areas where the display device 10 is not folded. The first non-foldable area NFA1 can be arranged on one side, for example, the lower side, of the foldable area FDA. The second non-foldable area NFA2 can be arranged on the other side, for example, the upper side, of the foldable area FDA.

[0125] The TSU touch detection units, according to one embodiment of the present invention, can be formed and arranged on the first non-foldable area NFA1 and the second non-foldable area NFA2, respectively.

[0126] On the other hand, the foldable area FDA can be a curved area with a predetermined curvature in a first fold line FOL1 and a second fold line FOL2. Therefore, the first fold line FOL1 can be a boundary between the foldable area FDA and the first non-foldable area NFA1, and the second fold line FOL2 can be a boundary between the foldable area FDA and the second non-foldable area NFA2.

[0127] The first folding line FOL1 and the second folding line FOL2 can extend in the first direction (geometric axis X direction), as illustrated in Figures 15 and 16, and the display device 10 can be folded in the second direction (geometric axis Y direction). For this reason, the length of the display device 10 in the second direction (geometric axis Y direction) can be reduced by approximately half, and thus, a user can conveniently carry the display device 10.

[0128] Meanwhile, an extension direction of the first folding line FOL1 and an extension direction of the second folding line FOL2 are not limited to the first direction (X-axis geometric direction). For example, the first folding line FOL1 and the second folding line FOL2 can extend in the second direction (Y-axis geometric direction), and the display device 10 can Petition 870250085608, dated 09 / 22 / 2025, page 39 / 70 34 / 35 can be folded in the first direction (X-axis geometric direction). In this case, the length of the display device 10 in the first direction (X-axis geometric direction) can be reduced by approximately half. Alternatively, the first folding line FOL1 and the second folding line FOL2 can extend in a diagonal direction of the display device 10, which corresponds to a direction between the first direction (X-axis geometric direction) and the second direction (Y-axis geometric direction). In this case, the display device 10 can be folded into a triangular shape.

[0129] When the first folding line FOL1 and the second folding line FOL2 extend in the first direction (geometric axis X direction), as illustrated in Figures 15 and 16, a length of the foldable area FDA in the second direction (geometric axis Y direction) can be less than a length of the foldable area FDA in the first direction (geometric axis X direction). Furthermore, a length of the first non-foldable area NFA1 in the second direction (geometric axis Y direction) can be greater than the length of the foldable area FDA in the second direction (geometric axis Y direction). A length of the second non-foldable area NFA2 in the second direction (geometric axis Y direction) can be greater than the length of the foldable area FDA in the second direction (geometric axis Y direction).

[0130] A first display area DA1 can be arranged on a front surface of the display device 10. The first display area DA1 can overlap the foldable area FDA, the first non-foldable area NFA1, and the second non-foldable area NFA2. Therefore, when the display device 10 is unfolded, an image can be displayed in the front surface direction on the foldable area FDA, the first non-foldable area NFA1, and the second non-foldable area NFA2 of the display device 10. Petition 870250085608, dated 09 / 22 / 2025, pp. 40 / 70 35 / 35

[0131] A second display area DA2 can be arranged on a rear surface of the display device 10. The second display area DA2 can overlap the second non-folding area NFA2. Therefore, when the display device 10 is folded, an image can be displayed in a front surface direction on the second non-folding area NFA2 of the display device 10.

[0132] It has been illustrated in Figures 15 and 16 that a through hole TH, in which a camera or similar is disposed, is disposed in the second non-foldable area NFA2, but the present invention is not limited to this. The through hole TH may be disposed in the first non-foldable area NFA1 or in the foldable area FDA.

[0133] Upon completing the detailed description, those skilled in the art will appreciate that many variations and modifications can be made to the preferred embodiments without substantially departing from the principles of the present invention. Therefore, the preferred embodiments described in the description are used in a generic and descriptive sense only and not for purposes of limitation. DESCRIPTIONS OF REFERENCE NUMBERS

[0134] 10: display device

[0135] 100: display panel

[0136] 200: display drive circuit

[0137] 300: circuit board

[0138] 400: touch-operated circuit Petition 870250085608, dated 09 / 22 / 2025, p. 41 / 70

Claims

1 / 9 CLAIMS 1. Display device characterized in that it comprises: a plurality of pixels arranged in a display area of ​​a display panel; a test switching element area formed in a non-display area or in a sub-area of ​​the display panel and including a plurality of test switching elements; and a display drive circuit controlling the timing of data voltage supply and drive control signals supplied to the plurality of pixels, wherein the display drive circuit controls the off-switching operations of the plurality of test switching elements, such that the plurality of test switching elements is maintained in an off state during an image display period.

2. Display device according to claim 1, characterized in that the plurality of test switching elements is connected to a plurality of data lines formed in the display area or to a plurality of fan-shaped lines formed in the non-display area in a one-to-one mode in parallel structures with the plurality of data lines or the plurality of fan-shaped lines.

3. Display device according to claim 2, characterized in that the plurality of test switching elements is connected to a plurality of port lines formed in the display area or to a plurality of power lines extending to the non-display area, in a one-to-one manner in structures parallel to the plurality of port lines or the plurality of power lines. Petition 870250085608, dated 22 / 09 / 2025, p. 42 / 70 2 / 9 4. Display device according to claim 2, characterized in that the respective first electrodes formed in the plurality of test switching elements are connected to the plurality of data lines in a one-to-one manner, the respective second electrodes formed in the plurality of test switching elements are connected to at least one first line terminal to which a test direct current (DC) voltage or a first shutdown control signal is supplied, and the respective gate electrodes formed in the plurality of test switching elements are connected to at least one second line terminal to which an active gate signal or a second shutdown control signal is supplied.

5. Display device according to claim 4, characterized in that the plurality of test switching elements receives the first shutdown control signal supplied to the respective first electrodes during an image display period, and the plurality of test switching elements is maintained in an off state in response to the second shutdown control signal inserted into the respective gate electrodes.

6. Display device according to claim 4, characterized in that the display drive circuit maintains the respective second electrodes of the plurality of test switching elements in a floating state through at least one first line terminal or supplies the first shutdown control signal to at least one first line terminal, and the display drive circuit shuts down the plurality of test switching elements by supplying the second shutdown control signal to the respective gate electrodes of the plurality of test switching elements through at least one second line terminal.

7. Display device according to claim 6, characterized in that the display drive circuit turns off the plurality of test switching elements, supplying the second turn-off control signal, which has a lower voltage magnitude than the first turn-off control signal, to the respective gate electrodes of the plurality of test switching elements.

8. Display device according to claim 2, characterized in that the respective first electrodes formed in the plurality of test switching elements are connected to the plurality of data lines in a one-to-one manner, the respective second electrodes formed in the plurality of test switching elements are connected to at least one first line terminal to which a test DC voltage or a first shutdown control signal is supplied, the first gate electrodes of the respective gate electrodes formed as double layers in the plurality of test switching elements are connected to at least one second line terminal to which an active gate signal or a second shutdown control signal is supplied,and the second gate electrodes of the respective gate electrodes formed as double layers in the plurality of test switching elements are connected to a DC voltage line terminal to which a third shutdown control signal having a predefined DC voltage magnitude is supplied.

9. Display device according to claim 8, characterized in that the display drive circuit maintains the respective second electrodes of the plurality of test switching elements in a floating state through at least one first line terminal or supplies the first shutdown control signal to at least one first line terminal, the display drive circuit shuts down the plurality of test switching elements by supplying the second shutdown control signal to the respective first gate electrodes of the plurality of test switching elements through at least one second line terminal, and the display drive circuit supplies the third shutdown control signal having a predefined DC voltage magnitude to the respective second gate electrodes through the DC voltage line terminal.

10. Display device according to claim 9, characterized in that the display drive circuit turns off the plurality of test switching elements by supplying the second turn-off control signal, which has a lower voltage magnitude than the first turn-off control signal, to the respective first gate electrodes of the plurality of test switching elements.

11. Display device according to claim 2, characterized in that the respective first electrodes formed in the plurality of test switching elements are connected to the plurality of data lines in a one-to-one manner, the respective second electrodes formed in the plurality of test switching elements are connected to at least one first line terminal to which a test DC voltage or a first shutdown control signal is supplied, the first gate electrodes of the respective gate electrodes formed as double layers in the plurality of test switching elements are connected to at least one second terminal. Petition 870250085608, dated 09 / 22 / 2025, p.45 / 70 5 / 9 line to which an active gate signal or a second shutdown control signal is supplied, and the second gate electrodes of the respective gate electrodes formed as the double layers in the plurality of test switching elements are connected to an alternating current (AC) voltage line terminal to which a third shutdown control signal oscillating within a predefined voltage range and having an AC voltage magnitude is supplied.

12. Display device according to claim 11, characterized in that the display drive circuit maintains the respective second electrodes formed in the plurality of test switching elements in a floating state through at least one first line terminal or supplies the first shutdown control signal to at least one first line terminal, the display drive circuit shuts down the plurality of test switching elements by supplying the second shutdown control signal to the respective first gate electrodes formed in the plurality of test switching elements through at least one second line terminal, and the display drive circuit supplies the third shutdown control signal oscillating within the predefined voltage range and having the magnitude of AC voltage to the respective second gate electrodes through the AC voltage line terminal.

13. Display device characterized in that it comprises: a plurality of pixels arranged in a display area of ​​a display panel; a gate actuator that supplies scanning signals to gate lines arranged in a non-display area and in the display area of ​​the display panel; Petition 870250085608, dated 09 / 22 / 2025, p.46 / 70 6 / 9 a test switching element area formed in the non-display area or in a sub-area of ​​the display panel and including a plurality of test switching elements; and a display drive circuit that controls the timing of data voltage supply and drive control signals supplied to the plurality of pixels and gate control signals supplied to the gate driver, wherein the display drive circuit controls the power-off switching operations of the plurality of test switching elements, such that the plurality of test switching elements is maintained in a power-off state during an image display period.

14. Display device according to claim 13, characterized in that the plurality of test switching elements is connected to a plurality of data lines formed in the display area or to a plurality of fan lines formed in the non-display area in a one-to-one mode in parallel structures with the plurality of data lines or the plurality of fan lines.

15. Display device according to claim 14, characterized in that the plurality of test switching elements is connected to a plurality of port lines formed in the display area or to a plurality of power lines extending to the non-display area in a one-to-one manner in parallel structures with the plurality of port lines or the plurality of power lines.

16. Display device according to claim 15, characterized in that the respective first electrodes formed in the plurality of test switching elements are connected to the plurality of gate lines in a one-to-one manner, Petition 870250085608, dated 09 / 22 / 2025, page 47 / 70 7 / 9 the respective second electrodes formed in the plurality of test switching elements are connected to at least one first line terminal to which a test scan voltage or a first shutdown control signal is supplied, and the respective gate electrodes formed in the plurality of test switching elements are connected to at least one second line terminal to which an active gate signal or a second shutdown control signal is supplied.

17. Display device according to claim 16, characterized in that the display drive circuit maintains the respective second electrodes formed in the plurality of test switching elements in a floating state through at least one first line terminal or supplies the first shutdown control signal to at least one first line terminal, and the display drive circuit turns off the plurality of test switching elements by supplying the second shutdown control signal to the respective gate electrodes formed in the plurality of test switching elements through at least one second line terminal.

18. Display device according to claim 14, characterized in that the respective first electrodes formed in the plurality of test switching elements are connected to the plurality of data lines in a one-to-one manner, the respective second electrodes formed in the plurality of test switching elements are connected to at least one first line terminal to which a test DC voltage or a first shutdown control signal is supplied, and the respective gate electrodes formed in the plurality of test switching elements are connected to at least one second line terminal to which an active gate signal or a second shutdown control signal is supplied.

19. Display device according to claim 14, characterized in that the respective first electrodes formed in the plurality of test switching elements are connected to the plurality of data lines in a one-to-one manner, the respective second electrodes formed in the plurality of test switching elements are connected to at least one first line terminal to which a test DC voltage or a first shutdown control signal is supplied, the first gate electrodes of the respective gate electrodes formed as double layers in the plurality of test switching elements are connected to at least one second line terminal to which an active gate signal or a second shutdown control signal is supplied,and the second gate electrodes of the respective gate electrodes formed as double layers in the plurality of test switching elements are connected to a DC voltage line terminal to which a third shutdown control signal having a predefined DC voltage magnitude is supplied.

20. Display device according to claim 14, characterized in that the respective first electrodes formed in the plurality of test switching elements are connected to the plurality of data lines in a one-to-one manner, the respective second electrodes formed in the plurality of test switching elements are connected to at least one first line terminal to which a test DC voltage or a first shutdown control signal is supplied, the first gate electrodes of the respective electrodes of Petition 870250085608, dated 09 / 22 / 2025, p.49 / 70 9 / 9 gate electrodes formed as double layers in the plurality of test switching elements are connected to at least one second line terminal to which an active gate signal or a second shutdown control signal is supplied, and the second gate electrodes of the respective gate electrodes formed as the double layers in the plurality of test switching elements are connected to an AC voltage line terminal to which a third shutdown control signal oscillating within a predefined voltage range and having an AC voltage magnitude is supplied. Petition 870250085608, dated 09 / 22 / 2025, pp. 50 / 70.