Display device

Abstract

According to an embodiment of the present disclosure, a display device includes: a substrate including a display area displaying an image; a first thin film transistor disposed on the substrate and including a first semiconductor layer; and a signal line disposed on the substrate. The display area comprises a first area with a first transmission area and a second area outside the first area, and the signal lines comprise first signal lines arranged in the first area and second signal lines arranged in the second area. A part of the first signal line and the first semiconductor layer are arranged on the same layer, and the first signal line comprises an oxide semiconductor material.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Korean Patent Application No. 10-2023-0114621 filed on August 30, 2023, which is incorporated herein by reference for all purposes as if fully set forth herein. Technical Field

[0003] Embodiments of the present disclosure relate to a display device. Background Art

[0004] With the advancement of technology, display devices can provide a photographing function and various detection functions in addition to an image display function. To this end, the display device should include an optical device (or a light receiving device or a sensor) such as a camera and a detection sensor.

[0005] Since the optical device should receive light on the front surface of the display device, the optical device can be arranged at a position where the optical device can receive light. Therefore, in the existing display device, the camera (or camera lens) and the detection sensor have to be exposed on the front surface. Therefore, the size of the frame of the display device may increase, or the design of the display device may be significantly restricted. Summary of the invention

[0006] Embodiments of the present disclosure are directed to providing a display apparatus having a light-transmitting structure in which an optical device can normally receive light (eg, visible light, infrared light, or ultraviolet light) without exposing the optical device on a front surface.

[0007] Embodiments of the present disclosure are directed to providing a display device capable of reducing an interconnection deviation between a region through which light can be transmitted and a region through which light cannot be transmitted.

[0008] Various embodiments of the present disclosure are directed to providing a display device having a high-transmittance structure in a region through which light can be transmitted.

[0009] Various embodiments of the present disclosure are directed to providing a display device having a structure that optimizes an interconnection process of a region through which light can be transmitted and a region through which light cannot be transmitted.

[0010] A display device according to an embodiment of the present disclosure may include: a substrate including a display area displaying an image; a first thin film transistor disposed on the substrate and including a first semiconductor layer; and a signal line disposed on the substrate.

[0011] The display area may include a first area and a second area outside the first area, the first area including the first transmission area.

[0012] A display device according to an embodiment of the present disclosure may include: a substrate including a display area for displaying an image; a first thin film transistor disposed on the substrate and including a first semiconductor layer; and a signal line disposed on the substrate, wherein the display area includes a first area including a first transmission area and a second area outside the first area, wherein the signal line includes a first signal line disposed in the first area and a second signal line disposed in the second area, wherein a portion of the first signal line is disposed in the same layer as the first semiconductor layer, and wherein the first signal line includes an oxide semiconductor material. The oxide semiconductor material may include a transparent oxide semiconductor material.

[0013] According to an embodiment of the present disclosure, a display device having a light-transmitting structure in which an optical device can normally receive light (eg, visible light, infrared light, or ultraviolet light) without exposing the optical device on a front surface may be provided.

[0014] According to an embodiment of the present disclosure, a display device can be provided, which can reduce the interconnection deviation between the optical area where light can be transmitted and the area where light cannot be transmitted. Therefore, the display driving can be performed, and the image quality of the display panel can be improved. In addition, since the driving method for reducing the interconnection deviation is not necessary, high-efficiency driving becomes possible, thereby, low-power design also becomes possible.

[0015] According to an embodiment of the present disclosure, a display device having an improved transmittance in a region where light can be transmitted can be provided. Therefore, since the light transmission characteristics are made uniform, the operating performance of the optical device (eg, camera performance or detection performance) can be improved.

[0016] According to an embodiment of the present disclosure, by providing a structure that optimizes an interconnection process of a region through which light can be transmitted and a region through which light cannot be transmitted, an efficient process may be achieved.

[0017] It should be noted that the effects of the present disclosure are not limited to those described above, and other effects of the present disclosure will be apparent to those skilled in the art through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a diagram showing a display device according to an embodiment of the present disclosure.

[0019] Figure 2 is a diagram showing a display device according to another embodiment of the present disclosure.

[0020] Figure 3 is a diagram showing a display device according to still another embodiment of the present disclosure.

[0021] Figure 4 is a schematic diagram of a system configuration of a display device according to an embodiment of the present disclosure.

[0022] Figure 5 is a diagram showing signal lines provided in a display panel according to an embodiment of the present disclosure.

[0023] Figure 6 In the display panel according to the embodiment of the present disclosure Figure 2 A plan view of area A is shown.

[0024] Figure 7 In the display panel according to the embodiment of the present disclosure Figure 2 A plan view of area B is shown.

[0025] Figure 8 In the display panel according to the embodiment of the present disclosure Figure 2 A plan view of area C is shown.

[0026] Fig. 9 is a cross-sectional view of a display panel according to an embodiment of the present disclosure.

[0027] Fig.10 In the display panel according to the embodiment of the present disclosure Fig. 9 An enlarged view of area D is shown.

[0028] Fig.11 is a plan view of a display panel according to an embodiment of the present disclosure.

[0029] Fig.12 is a cross-sectional view of a display panel according to another embodiment of the present disclosure.

[0030] Fig.13 is a plan view of a display panel according to another embodiment of the present disclosure.

[0031] Fig.14 is a cross-sectional view of a display panel according to another embodiment of the present disclosure.

[0032] Fig.15 is a plan view of a display panel according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0033] In the following description of examples or embodiments of the present disclosure, reference will be made to the accompanying drawings, in which specific examples or embodiments that can be implemented are shown by way of example, and in the accompanying drawings, the same reference numerals and symbols may be used to represent the same or similar components, even if these components are shown in different drawings. In addition, in the following description of examples or embodiments of the present disclosure, detailed descriptions of well-known functions and components incorporated herein will be omitted when it is determined that the description may make the subject matter in some embodiments of the present disclosure quite unclear. Words such as "including", "having", "containing", "consisting of", "consisting of", and "formed of" used herein are generally intended to allow the addition of other components unless the words are used with "only". As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise.

[0034] Terms such as "first", "second", "A", "B", "(A)", and "(B)" may be used herein to describe elements of the present disclosure. Each of these terms is not used to limit the nature, order, sequence, quantity, etc. of the elements, but is only used to distinguish the corresponding elements from other elements.

[0035] When it is mentioned that a first element is “connected or coupled to” a second element, “contacts or overlaps” the second element, etc., it should be interpreted that the first element may not only be “directly connected or coupled to” the second element or “directly contact or overlaps” the second element, but also a third element may be “inserted” between the first element and the second element, or the first element and the second element may be “connected or coupled to” or “contacts or overlaps” each other via a fourth element. Here, the second element may be included in at least one of the two or more elements that are “connected or coupled to”, “contacts or overlaps”, etc., each other.

[0036] When time relative terms such as "after", "successively", "next", "before" and the like are used to describe a process or operation of an element or configuration or a flow or step in an operation, process and manufacturing method, these terms may be used to describe a non-sequential or non-sequential process or operation unless the terms "directly" or "immediately" are used together.

[0037] When referring to a numerical value for a component or its corresponding information (e.g., grade, etc.), even without a separate explicit description, the numerical value or its corresponding information can be interpreted as including an error range that may be caused by various factors (e.g., process variables, internal or external shocks, noise, etc.).

[0038] Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0039] Figure 1 is a diagram showing a display device according to an embodiment of the present disclosure.

[0040] Figure 2 is a diagram showing a display device according to another embodiment of the present disclosure.

[0041] Figure 3 is a diagram showing a display device according to still another embodiment of the present disclosure.

[0042] refer to Figure 1 , 2 3. The display device 100 according to an embodiment of the present disclosure may include a display panel 110 that displays an image and one or more optical devices 11 and 12.

[0043] The display panel 110 may include a display area DA where an image is displayed and a non-display area NDA where an image is not displayed.

[0044] In the display area DA, sub-pixels may be disposed, and various signal lines for driving the sub-pixels may be disposed.

[0045] The non-display area NDA may be an area outside the display area DA. In the non-display area NDA, various interconnections may be provided, and various driving circuits may be connected. The non-display area NDA may be bent so as not to be visible on the front surface or may be covered by a housing. The non-display area NDA may be a frame or a frame area.

[0046] In the display device 100 according to an embodiment of the present disclosure, one or more optical devices 11 and 12 may be electronic parts that are provided and installed independently of the display panel 110 and are located below the display panel 110 (on a surface opposite to the viewing surface of the display panel 110).

[0047] In the display apparatus 100 according to an embodiment of the present disclosure, the one or more optical devices 11 and 12 may be devices that can perform an operation using received light.

[0048] The one or more optical devices 11 and 12 may be devices that receive light emitted by the display panel 110 to perform a predetermined operation according to the received light. For example, the one or more optical devices 11 and 12 may include a photographic device such as a camera (or image sensor) and one or more of detection sensors such as a proximity sensor and an illumination sensor. For example, the detection sensor may be an infrared sensor.

[0049] Light required for operation of the one or more optical devices 11 and 12 may enter the front surface (or viewing surface) of the display device 110, may be transmitted through the display panel 110, and may be transmitted to the one or more optical devices 11 and 12 located below the display panel 110 (or on the surface opposite to the viewing surface of the display panel 110). For example, the light required for the one or more optical devices 11 and 12 and transmitted through the display panel 110 may include at least one of visible light, infrared light, and ultraviolet light.

[0050] refer to Figure 1 , 2 3. In the display panel 110 according to the embodiment of the present disclosure, the display area DA may include a first area 300 and a second area 400. The first area 300 may be an optical area, etc., and the second area 400 may be a normal area, etc., but are not limited thereto. The optical area may include the first area 300 or the third area 500. The third area 500 may be an optical area, etc., but are not limited thereto. The first area 300 and the third area 500 may be one or more optical areas 300 and 500, and the one or more optical areas 300 and 500 may be areas overlapping with one or more optical devices 11 and 12.

[0051] refer to Figure 1 , the display area DA may include a first area 300 and a second area 400. At least a portion of the first area 300 may overlap with the first optical device 11.

[0052] refer to Figure 2 , the display area DA may include a first area 300, a second area 400, and a third area 500. The second area 400 may exist between the first area 300 and the third area 500. At least a portion of the first area 300 may overlap with the first optical device 11, and at least a portion of the third area 500 may overlap with the second optical device 12.

[0053] refer to Figure 3 , the display area DA may include a first area 300, a second area 400, and a third area 500. The second area 400 may not exist between the first area 300 and the third area 500. For example, the first area 300 and the third area 500 may contact each other. At least a portion of the first area 300 may overlap with the first optical device 11, and at least a portion of the third area 500 may overlap with the second optical device 12.

[0054] Each of the one or more optical regions 300 and 500 may be formed to have both an image display structure and a light transmission structure. For example, since the one or more optical regions 300 and 500 are part of the display area DA, the one or more optical regions 300 and 500 may include a light emitting region of a sub-pixel provided for displaying an image. A light transmission structure may be formed in each of the one or more optical regions 300 and 500 to transmit light to each of the one or more optical devices 11 and 12.

[0055] One or more optical devices 11 and 12 may be located behind the display panel 110 (or below a surface opposite to a viewing surface thereof) to receive light transmitted through the display panel 110 .

[0056] One or more optical devices 11 and 12 may not be exposed on the front surface (or viewing surface) of the display panel 110. When the user views the front surface of the display apparatus 100, the optical devices 11 and 12 may not be visible to the user.

[0057] For example, the first optical device 11 may be a camera that receives light in a visible light band (e.g., visible light), and the second optical device 12 may be a detection sensor such as a proximity sensor and an illumination sensor. For example, the detection sensor may be an infrared sensor that detects light in an infrared band (or infrared light). Alternatively, the first optical device 11 may be a detection sensor, and the second optical device 12 may be a camera.

[0058] Hereinafter, for the sake of convenience of explanation, an example will be described in which the first optical device 11 is a camera and the second optical device 12 is an infrared detection sensor. The camera may be a camera lens or an image sensor.

[0059] In the case where the first optical device 11 is a camera, the camera may be a front camera that is located behind (below) the display panel 110 but captures the front of the display panel 110. Therefore, the user can take a picture (or a selfie) through a camera that is not visible from the viewing surface while viewing the viewing surface of the display panel 110.

[0060] The first area 300, the second area 400 and the third area 500 included in the display area DA may be areas capable of displaying images. The second area 400 may be an area where no light-transmitting structure is formed, and each of the first and third areas 300 and 500 may be an area where a light-transmitting structure is formed.

[0061] The first region 300 or the third region 500 should have a transmittance equal to or higher than a predetermined level, and the second region 400 may have no light transmittance or may have a low transmittance lower than the predetermined level.

[0062] The first region 300 , the second region 400 , and the third region 500 may be different from each other in terms of resolution, sub-pixel arrangement structure, number of sub-pixels per unit area, electrode structure, line structure, electrode arrangement structure, line arrangement structure, and the like.

[0063] The number of sub-pixels per unit area in the first region 300 or the third region 500 may be less than the number of sub-pixels per unit area in the second region 400. The resolution in the first region 300 or the third region 500 may be lower than the resolution in the second region 400. For example, the number of sub-pixels per unit area may be the same as the resolution, pixel density, or pixel integration. For example, the unit of the number of sub-pixels per unit area may be PPI (pixels per inch), which indicates the number of pixels in 1 inch.

[0064] The number of sub-pixels per unit area in the first region 300 may be less than the number of sub-pixels per unit area in the second region 400. The number of sub-pixels per unit area in the third region 500 may be equal to or greater than the number of sub-pixels per unit area in the first region 300, and may be less than the number of sub-pixels per unit area in the second region 400.

[0065] As a method for improving the transmittance of at least one of the first region 300 and the third region 500, the differential pixel density design method as described above may be applied. According to the differential pixel density design method, the display panel 110 may be designed so that the number of sub-pixels per unit area in at least one of the first region 300 and the third region 500 is less than the number of sub-pixels per unit area in the second region 400.

[0066] As another example, as another method for improving the transmittance of at least one of the first region 300 and the third region 500, a differential pixel size design method may be applied. According to the differential pixel size design method, the display panel 110 may be designed so that the number of sub-pixels per unit area in at least one of the first region 300 and the third region 500 is the same as or similar to the number of sub-pixels per unit area in the second region 400 and the size of each sub-pixel (e.g., the size of the light-emitting region) disposed in at least one of the first region 300 and the third region 500 is smaller than the size of each sub-pixel (e.g., the size of the light-emitting region) disposed in the second region 400.

[0067] Hereinafter, for convenience of explanation, description will be made on the assumption that, among the two methods for improving the transmittance of at least one of the first region 300 and the third region 500, for example, the differential pixel density design method and the differential pixel size design method, the differential pixel density design method is applied. Therefore, in the following description, a small number of sub-pixels per unit area may indicate that the size of each sub-pixel is small, and a large number of sub-pixels per unit area may indicate that the size of each sub-pixel is large.

[0068] The first region 300 may have various shapes, such as a circle, an ellipse, a quadrilateral, a hexagon, and an octagon. The third region 500 may have various shapes, such as a circle, an ellipse, a quadrilateral, a hexagon, and an octagon. The first region 300 and the third region 500 may have the same shape or different shapes.

[0069] refer to Figure 3 , when the first area 300 and the third area 500 are in contact with each other, the entire optical area including the first area 300 and the third area 500 may have various shapes, such as a circle, an ellipse, a quadrangle, a hexagon, and an octagon. Hereinafter, for ease of explanation, an example in which each of the first area 300 and the third area 500 has a circular shape will be described. The shapes of the first area 300 and the third area 500 do not limit the contents of the present disclosure.

[0070] In the display device 100 according to an embodiment of the present disclosure, when the first optical device 11 not exposed to the outside and hidden under the display panel 110 is a camera, the display device 100 may be a UDC (Under Display Camera), but is not limited to this term.

[0071] In the display device 100 according to the embodiment of the present disclosure, since the notch or camera hole for exposing the camera does not need to be formed in the display panel 110, the area of ​​the display area DA is not reduced. Therefore, since the notch or camera hole for exposing the camera does not need to be formed in the display panel 110, the size of the frame area can be reduced, and the degree of freedom of design can be improved. A portion of the optical devices 11 and 12 may be formed in the display panel 110 to overlap with the notch or hole for exposing the optical devices 11 and 12. Therefore, the display device 100 may include both the notch or hole and the one or more optical regions 300 and 500.

[0072] In the display apparatus 100 according to an embodiment of the present disclosure, even if the one or more optical devices 11 and 12 are positioned by being hidden behind the display panel 110 , the one or more optical devices 11 and 12 should be able to normally perform a desired function by normally receiving light.

[0073] In addition, in the display device 100 according to an embodiment of the present disclosure, even if one or more optical devices 11 and 12 are positioned by being hidden behind the display panel 110 and are positioned to overlap with the display area DA, normal display of images should be possible in one or more optical areas 300 and 500 overlapping with the one or more optical devices 11 and 12 in the display area DA.

[0074] Since the first area 300 is an area capable of transmitting light, the display characteristics of the first area 300 may be different from the display characteristics in the second area 400 .

[0075] When the first region 300 is designed to improve display characteristics, the transmittance of the first region 300 may be reduced.

[0076] Therefore, the embodiments of the present disclosure may provide a structure of the first region 300 capable of improving transmittance in the first region 300 without causing image quality deviation between the first region 300 and the second region 400 .

[0077] Even for the third region 500 other than the first region 300 , the embodiment of the present disclosure may provide a structure of the third region 500 capable of improving transmittance in the third region 500 while improving image quality in the third region 500 .

[0078] Therefore, in the display device 100 according to the embodiment of the present disclosure, although the structure of the first area 300 and the structure of the third area 500 are basically similar or identical, the structure of the first area 300 and the structure of the third area 500 may be different from each other in terms of resolution, sub-pixel setting structure, the number of sub-pixels per unit area, electrode structure, line structure, electrode setting structure, etc.

[0079] Figure 4 is a schematic diagram of a system configuration of a display device according to an embodiment of the present disclosure.

[0080] refer to Figure 4 The display device may include a display panel 110 and a display driving circuit as components for displaying an image. The display driving circuit may be a circuit for driving the display panel 110. The display driving circuit may include a data driving circuit 220, a gate driving circuit 230, and a display controller 240, but the embodiments of the present disclosure are not limited thereto.

[0081] The display panel 110 may include a display area DA that displays an image and a non-display area NDA that does not display an image. The non-display area NDA may be an area outside the display area DA, and may also be referred to as a frame area. The entirety or a portion of the non-display area NDA may be an area visible on the front surface of the display device or an area that is bent and not visible on the front surface of the display device.

[0082] The display panel 110 may include a substrate SUB and sub-pixels SP disposed on the substrate SUB. In order to drive the sub-pixels SP, the display panel 110 may further include various types of signal lines.

[0083] The display device according to the embodiment of the present disclosure may be a liquid crystal display device, etc., or may be a self-emitting display device in which the display panel 110 itself emits light. When the display device according to the embodiment of the present disclosure is a self-emitting display device, each of the sub-pixels SP may include a light-emitting element. For example, the display device according to the embodiment of the present disclosure may be an organic light-emitting display device, wherein the light-emitting element is implemented using an organic light-emitting diode (OLED). As another example, the display device according to the embodiment of the present disclosure may be an inorganic light-emitting display device, wherein the light-emitting element is implemented using an inorganic-based light-emitting diode. As yet another example, the display device according to the embodiment of the present disclosure may be a quantum dot display device, wherein the light-emitting element is implemented using quantum dots as self-luminous semiconductor crystals.

[0084] The structure of each sub-pixel SP may vary according to the type of display device. For example, when the display device is a self-emitting display device in which each sub-pixel SP emits light by itself, each sub-pixel SP may include a self-emitting light emitting element, at least one transistor, and at least one capacitor.

[0085] For example, the various signal lines may include a data line 20 transmitting a data signal (or a data voltage or an image signal) and a gate line 30 transmitting a gate signal (or a scan signal).

[0086] The data lines 20 and the gate lines 30 may intersect each other. Each of the data lines 20 may be arranged to extend along a first direction. Each of the gate lines 30 may be arranged to extend along a second direction. The first direction may be a column direction and the second direction may be a row direction. Alternatively, the first direction may be a row direction and the second direction may be a column direction. Hereinafter, for ease of explanation, an example in which each of the data lines 20 is arranged in the column direction and each of the gate lines 30 is arranged in the row direction will be described. The embodiments of the present disclosure are not limited thereto.

[0087] The data driving circuit 220 may be a circuit for driving the data lines 20. The data driving circuit 220 may output data signals to the data lines 20. The gate driving circuit 230 may be a circuit for driving the gate lines 30. The gate driving circuit 230 may output gate signals to the gate lines 30.

[0088] The display controller 240 may control the data driving circuit 220 and the gate driving circuit 230. The display controller 240 may control the driving timing of the data lines 20 and the driving timing of the gate lines 30.

[0089] The display controller 240 may supply a data driving control signal DCS to the data driving circuit 220 to control the data driving circuit 220 , and may supply a gate driving control signal GCS to the gate driving circuit 230 to control the gate driving circuit 230 .

[0090] The display controller 240 may receive input image data from the host system 250 , and may supply image data Data to the data driving circuit 220 based on the input image data.

[0091] The data driving circuit 220 may receive the digital type image data Data from the display controller 240 , may convert the received image data Data into an analog type data signal, and may output the data signal to the data line 20 .

[0092] The gate driving circuit 230 may be supplied with a first gate voltage corresponding to an on-level voltage and a second gate voltage corresponding to an off-level voltage, and together with various gate driving control signals GCS, may generate a gate signal and supply the generated gate signal to the gate line 30 .

[0093] For example, the data driving circuit 220 can be connected to the display panel 110 in a tape automated bonding (TAB) method, can be connected to a bonding pad of the display panel 110 in a chip on glass (COG) or chip on panel (COP) method, or can be connected to the display panel 110 by being implemented in a chip on film (COF) method.

[0094] The gate drive circuit 230 may be connected to the display panel 110 in a tape automated bonding (TAB) method, may be connected to a bonding pad of the display panel 110 in a chip on glass (COG) or chip on panel (COP) method, or may be connected to the display panel 110 according to a chip on film (COF) method. Alternatively, the gate drive circuit 230 may be formed in a gate in panel (GIP) type into a non-display area NDA of the display panel 110. The gate drive circuit 230 may be disposed on a substrate SUB or may be connected to the substrate SUB. For example, in the case of a GIP type, the gate drive circuit 230 may be disposed in a non-display area NDA of the substrate SUB. In the case of a chip on glass (COG) type or a chip on film (COF) type, the gate drive circuit 230 may be connected to the substrate SUB.

[0095] At least one of the data driving circuit 220 and the gate driving circuit 230 may be disposed in the display area DA of the display panel 110. For example, at least one of the data driving circuit 220 and the gate driving circuit 230 may be disposed so as not to overlap with the sub-pixel SP, or may be disposed so as to partially or entirely overlap with the sub-pixel SP.

[0096] The data driving circuit 220 may be connected to one side (e.g., the upper side or the lower side) of the display panel 110. The data driving circuit 220 may be connected to both sides (e.g., the upper side and the lower side) of the display panel 110 or may be connected to at least two sides among the four sides of the display panel 110 according to a driving method, a panel design method, etc.

[0097] The gate driving circuit 230 may be connected to one side (e.g., the left side or the right side) of the display panel 110. The gate driving circuit 230 may be connected to both sides (e.g., the left side and the right side) of the display panel 110 or may be connected to at least two sides among the four sides of the display panel 110 according to a driving method, a panel design method, etc.

[0098] The display controller 240 may be implemented as a separate component from the data driving circuit 220. Alternatively, the display controller 240 may be implemented as an integrated circuit by being integrated with the data driving circuit 220.

[0099] The display controller 240 may be a timing controller used in display technology, a control device including a timing controller and capable of further performing other control functions, a control device different from a timing controller, or a circuit in a control device. The display controller 240 may be implemented by various circuits or electronic components such as an integrated circuit (IC), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), and a processor.

[0100] The display controller 240 may be mounted on a printed circuit board or a flexible printed circuit, and the display controller 240 may be electrically connected to the data driving circuit 220 and the gate driving circuit 230 through the printed circuit board or the flexible printed circuit.

[0101] The display controller 240 may send and receive signals to and from the data driving circuit 220 according to at least one predetermined interface. For example, the interface may include a low voltage differential signaling (LVDS) interface, an EPI (embedded clock point-to-point interface), and a serial peripheral interface (SPI).

[0102] In order to further provide touch sensing function and image display function, the display device according to an embodiment of the present disclosure may include a touch sensor and a touch sensing circuit, and the touch sensing circuit detects whether a touch event occurs by a touch object such as a finger or a pen, or detects a touch position by sensing the touch sensor.

[0103] The touch sensing circuit may include a touch driving circuit 260 that generates and outputs touch sensing data by driving and sensing the touch sensor, and a touch controller 270 that can detect the occurrence of a touch event or detect a touch position using the touch sensing data.

[0104] The touch sensor may include a plurality of touch electrodes. The touch sensor may also include a plurality of touch lines for electrically connecting the plurality of touch electrodes and the touch driving circuit 260 .

[0105] The touch sensor may be configured in the form of a touch panel outside the display panel 110, or may be configured inside the display panel 110. In the case where the touch sensor is configured in the form of a touch panel outside the display panel 110, the touch sensor may be referred to as an external type. When the touch sensor is an external type, the touch panel and the display panel 110 may be manufactured independently and coupled during the assembly process. The external type touch panel may include a substrate for the touch panel and a plurality of touch electrodes on the substrate for the touch panel.

[0106] When the touch sensor exists inside the display panel 110 , the touch sensor may be formed on the substrate SUB together with signal lines and electrodes related to display driving during a manufacturing process of the display panel 110 .

[0107] The touch driving circuit 260 may supply a touch driving signal to at least one of the plurality of touch electrodes and may generate touch sensing data by sensing at least one of the plurality of touch electrodes.

[0108] The touch sensing circuit may perform touch sensing in a self-capacitance sensing method or a mutual capacitance sensing method, but embodiments of the present disclosure are not limited thereto.

[0109] In the case where the touch sensing circuit performs touch sensing in the self-capacitance sensing method, the touch sensing circuit may perform touch sensing based on the capacitance between each touch electrode and a touch object (e.g., a finger, a pen, etc.). According to the self-capacitance sensing method, each of the plurality of touch electrodes may serve as both a driving touch electrode and a sensing touch electrode. The touch drive circuit 260 may drive all or some of the plurality of touch electrodes, and may sense all or some of the plurality of touch electrodes.

[0110] In the case where the touch sensing circuit performs touch sensing in the mutual capacitance sensing method, the touch sensing circuit may perform touch sensing based on the capacitance between the touch electrodes. According to the mutual capacitance sensing method, a plurality of touch electrodes are divided into driving touch electrodes and sensing touch electrodes. The touch driving circuit 260 may drive the driving touch electrodes and sense the sensing touch electrodes.

[0111] The touch driving circuit 260 and the touch controller 270 included in the touch sensing circuit may be implemented as independent devices or may be implemented as a single device. In addition, the touch driving circuit 260 and the data driving circuit 220 may be implemented as independent devices or may be implemented as a single device.

[0112] The display device may further include a power supply circuit that supplies various types of power to the display driving circuit and / or the touch sensing circuit.

[0113] The display device according to the embodiment of the present disclosure may be a mobile terminal, such as a smart phone, and a tablet computer or a monitor or a television (TV) of various sizes. However, the display device according to the embodiment of the present disclosure is not limited thereto, and may be a display capable of displaying information or images of various types and sizes.

[0114] In the display panel 110, the display area DA may include a first area 300, a second area 400, and a third area 500. The first area 300, the second area 400, and the third area 500 may be areas where an image can be displayed. The second area 400 may be an area where a light-transmitting structure is not formed, and each of the first area 300 and the third area 500 may be an area where a light-transmitting structure is formed.

[0115] In the display panel 110, the display area DA may include the first area 300 and the third area 500, together with the second area 400. For ease of explanation, it will be assumed that the display area DA includes both the first area 300 and the third area 500 (refer to Figure 2 and 3 ) for description.

[0116] Figure 5 is a diagram showing signal lines provided in a display panel according to an embodiment of the present disclosure.

[0117] refer to Figure 5 According to an embodiment of the present disclosure, the display panel 110 may include a display area DA displaying an image and a non-display area NDA not displaying an image. The display area DA may include a first area 300, a second area 400, and a third area 500.

[0118] For example, each of the first area 300 , the second area 400 , and the third area 500 may include a plurality of light emitting areas.

[0119] The first area 300 and the third area 500 may be areas through which light can be transmitted, and the second area 400 may be an area through which light cannot be transmitted or through which light transmission is not significant. The second area 400 may be an area through which light cannot be transmitted and excludes the first area 300 and the third area 500. Light transmission may mean that light passes through the front and rear surfaces of the display panel 110.

[0120] The display panel 110 may include sub-pixels and signal lines 10 for driving the sub-pixels.

[0121] The signal line 10 may supply various driving signals necessary for driving the sub-pixels to the sub-pixels.

[0122] For example, the various driving signals may include data signals for driving the data lines 20 and scan signals for driving the gate lines 30. The various driving signals may also include driving voltages for driving driving voltage lines and base voltages for driving base voltage lines connected to common electrodes.

[0123] Therefore, the signal line 10 may include a data line 20 for supplying a data signal and a gate line 30 for supplying a gate signal such as a scan signal. The signal line 10 may also include a driving voltage line for supplying a driving voltage and a basic voltage line for supplying a basic voltage.

[0124] The signal line 10 may be disposed to overlap the first region 300 , the second region 400 , and the third region 500 .

[0125] The data line 20 may be disposed to extend in a first direction. The gate line 30 may be disposed to extend in a second direction different from the first direction.

[0126] The signal line 10 may include a first signal line overlapping the first region 300 or the third region 500 , and a second signal line overlapping the second region 400 .

[0127] Figure 6 In the display panel according to the embodiment of the present disclosure Figure 2 A plan view of area A is shown.

[0128] refer to Figure 6 , the first region 300 may include a first light emitting region 310 , a first non-transmitting region 320 , and a first transmitting region 330 .

[0129] Each of the first transmission regions 330 included in the first region 300 may have various shapes, such as a circular shape, an elliptical shape, a polygonal shape, and an irregular shape.

[0130] The first transmission regions 330 may have the same shape, or some of the first transmission regions 330 may have a shape different from others.

[0131] The first non-transmission area 320 included in the first area 300 may be an area through which light is not transmitted at all, or may be an area through which light is transmitted at a lower transmittance than the first transmission area 330 .

[0132] The first transmission region 330 may correspond to a position where a plurality of holes are formed in the common electrode. The position where the plurality of holes are formed may be the first region 300.

[0133] For example, when the first color light is red light, the second color light is green light, and the third color light is blue light, the light-emitting area of ​​the first color light can be called the first red light-emitting area 310R, the light-emitting area of ​​the second color light can be called the first green light-emitting area 310G, and the light-emitting area of ​​the third color light can be called the first blue light-emitting area 310B.

[0134] The first red light emitting region 310R, the first green light emitting region 310G, and the first blue light emitting region 310B may have the same size (light emitting region size). Alternatively, at least one of the first red light emitting region 310R, the first green light emitting region 310G, and the first blue light emitting region 310B may have a size (light emitting region size) different from the other light emitting regions.

[0135] When the first color is red, the second color is green, and the third color is blue, among the size of the first red light emitting area 310R (light emitting area size), the size of the first green light emitting area 310G (light emitting area size), and the size of the first blue light emitting area 310B (light emitting area size), the size of the first blue light emitting area 310B (light emitting area size) can be the largest.

[0136] The light emitting element disposed in the first red light emitting region 310R may include a light emitting layer emitting red light. The light emitting element disposed in the first green light emitting region 310G may include a light emitting layer emitting green light. The light emitting element disposed in the first blue light emitting region 310B may include a light emitting layer emitting blue light.

[0137] Among the light-emitting layer emitting red light, the light-emitting layer emitting green light, and the light-emitting layer emitting blue light, the organic material included in the light-emitting layer emitting blue light may be most susceptible to degradation. Therefore, by designing the size of the first blue light emitting region 310B to be the largest, the current density supplied to the light-emitting element disposed in the first blue light emitting region 310B can be minimized. Therefore, the degree of degradation of the light-emitting element disposed in the first blue light emitting region 310B can become similar to the degree of degradation of the light-emitting element disposed in the first red light emitting region 310R and the degree of degradation of the light-emitting element disposed in the first green light emitting region 310G.

[0138] Therefore, the image quality of the display panel 110 can be improved because the degradation deviation between the light-emitting elements set in the first red light-emitting region 310R, the light-emitting elements set in the first green light-emitting region 310G, and the light-emitting elements set in the first blue light-emitting region 310B is eliminated or reduced.

[0139] The first light emitting region 310 in the first area 300 may include a first red light emitting region 310R, a first green light emitting region 310G, and a first blue light emitting region 310B.

[0140] Figure 7 In the display panel according to the embodiment of the present disclosure Figure 2 A plan view of area B is shown.

[0141] refer to Figure 7 , the second region 400 may include a second light emitting region 410 and a second non-transmitting region 420 .

[0142] The second light emitting region 410 may include a light emitting region emitting at least three colors of light. For example, the second light emitting region 410 may include a first color light emitting region emitting a first color light, a second color light emitting region emitting a second color light, and a third color light emitting region emitting a third color light.

[0143] The second red light emitting region 410R, the second green light emitting region 410G, and the second blue light emitting region 410B may have the same size (light emitting region size). As another example, at least one of the second red light emitting region 410R, the second green light emitting region 410G, and the second blue light emitting region 410B may have a size (light emitting region size) different from the other light emitting regions.

[0144] The first color, the second color, and the third color may be different colors and may be various colors. For example, the first color, the second color, and the third color may include red, green, and blue, respectively. Hereinafter, for the sake of convenience of explanation, an example in which the first color is red, the second color is green, and the third color is blue will be described. However, embodiments of the present disclosure are not limited thereto.

[0145] The entire second region 400 may correspond to a non-transmission region. For example, the second region 400 may include a second non-transmission region 420 including the second light emitting region 410. The entire second region 400 may be the second non-transmission region 420, and the second region 400 may not include a transmission region.

[0146] Figure 8 In the display panel according to the embodiment of the present disclosure Figure 2 A plan view of area C is shown.

[0147] refer to Figure 8 , the third region 500 may include a third light emitting region 510 , a third non-transmitting region 520 , and a third transmitting region 530 .

[0148] Each of the second transmission regions 530 included in the third region 500 may have various shapes, such as a circular shape, an elliptical shape, a polygonal shape, and an irregular shape.

[0149] The second transmission areas 530 may have the same shape. Alternatively, some of the second transmission areas 530 may have a shape different from that of the other areas.

[0150] The third non-transmission area 520 included in the third region 500 may be an area through which light is not transmitted at all, or may be an area through which light is transmitted at a lower transmittance than the second transmission area 530 .

[0151] The second transmission region 530 may correspond to a position where a plurality of holes are formed in the common electrode. For example, the position where a plurality of holes are formed may be the third region 500.

[0152] The third light emitting region 510 in the third area 500 may include a third red light emitting region 510R, a third green light emitting region 510G, and a third blue light emitting region 510B.

[0153] The third light emitting region 510 may have Figure 6 The first light emitting region 310 shown has different sub-pixel structures, but is not limited thereto.

[0154] Figure 7 and 8The sub-pixel structure illustrated in the figure can be configured in various ways to minimize the resolution difference between the second region 400 and the first and third regions 300 and 500, which is caused by the presence of the transmissive regions 330 and 530 in the first and third regions 300 and 500, and to maximize the performance of the optical devices 11 and 12 that are arranged to overlap with the first and third regions 300 and 500.

[0155] Fig. 9 is a cross-sectional view of a display panel according to an embodiment of the present disclosure.

[0156] refer to Fig. 9 , the display panel may include a first area 300 and a second area 400. Fig. 9 In the embodiment, the optical region is shown as the first region 300, but is not limited thereto. For example, the first region 300 may be Figure 2 and 3 A third region 500 is shown.

[0157] Various optical devices, such as a camera and an infrared sensor, may be disposed at a position overlapping the first area 300 .

[0158] The second region 400 may include a first thin film transistor 630 and a second thin film transistor 640 .

[0159] The first thin film transistor 630 may include a first barrier layer 631 , a first semiconductor layer 633 , a first gate electrode 635 , a first source electrode 636 , and a first drain electrode 637 .

[0160] The second thin film transistor 640 may include a second barrier layer 641 , a second semiconductor layer 643 , a second gate electrode 645 , a second source electrode 646 , and a second drain electrode 647 .

[0161] The first thin film transistor 630 may be used as a switching transistor, and the second thin film transistor 640 may be used as a driving transistor, but is not limited thereto.

[0162] refer to Figure 2 and 9 , the display panel may include a substrate SUB. The substrate SUB may include a display area DA and a non-display area NDA around the display area DA. The substrate SUB may support and protect components of the display device disposed on the substrate SUB. The substrate SUB may be made of glass or a flexible material such as polyimide, but the embodiments of the present disclosure are not limited thereto. There may be a plurality of substrates SUB. An insulating layer may be formed between the plurality of substrates SUB.

[0163] The first insulating layer 611 may be formed on the substrate SUB to protect various components of the display device from being penetrated by moisture and oxygen from outside the substrate SUB. The first insulating layer 611 may improve the adhesion between the first insulating layer 611 and the layers formed on the substrate SUB, and may block various types of impurities, such as alkaline components, from leaking from the substrate SUB. The first insulating layer 611 may prevent or delay the diffusion of moisture or oxygen that has penetrated the substrate SUB. The first insulating layer 611 may be a buffer layer or the like, but the embodiments of the present disclosure are not limited thereto.

[0164] The first insulating layer 611 may be formed of silicon oxide (SiOx), silicon nitride (SiNx), or silicon oxynitride (SiNxOx), but the embodiments of the present disclosure are not limited thereto.

[0165] The second barrier layer 641 may be formed on the first insulating layer 611. The second barrier layer 641 may block light so that the semiconductor layer of the second thin film transistor 640 is not damaged. In addition, the second barrier layer 641 may minimize damage to the thin film transistor during a process of forming a hole in the display device.

[0166] The second barrier layer 641 may be formed as a single layer or multiple layers made of any one or an alloy of molybdenum (Mo), copper (Cu), titanium (Ti), aluminum (Al), chromium (Cr), gold (Au), nickel (Ni), and tungsten (W), but is not limited thereto.

[0167] The second insulating layer 613 may be formed on the second barrier layer 641. The second insulating layer 613 may be made of the same material as the first insulating layer 611, but is not limited thereto. The second insulating layer 613 may be formed over the first region 300 and the second region 400.

[0168] The second semiconductor layer 643 may be formed on the second insulating layer 613. The second semiconductor layer 643 may be made of amorphous silicon, polycrystalline silicon having excellent mobility compared to amorphous silicon to achieve low energy consumption and excellent reliability, or an oxide semiconductor such as ZnO (zinc oxide), IGZO (indium gallium zinc oxide), and ITO (indium tin oxide), but is not limited thereto. When the second semiconductor layer 643 is made of an oxide semiconductor, the effect of blocking the leakage current of the thin film transistor is excellent, and therefore, the brightness change of the sub-pixel during low-speed driving can be minimized.

[0169] The third insulating layer 615 may be formed on the second insulating layer 643. The third insulating layer 615 may be made of the same material as the first insulating layer 611 and / or the second insulating layer 613, but is not limited thereto. The third insulating layer 615 may be a gate insulating layer, but embodiments of the present disclosure are not limited thereto.

[0170] The second gate electrode 645 may be formed on the third insulating layer 615. The second gate electrode 645 may be made of the same material as the second barrier layer 641, but is not limited thereto.

[0171] The first thin film transistor 630 may be disposed on the substrate SUB. The first thin film transistor 630 may be disposed to be spaced apart from the second thin film transistor 640.

[0172] The first thin film transistor 630 may include a first barrier layer 631. The first barrier layer 631 may be formed at the same layer as the second gate electrode 645. The first barrier layer 631 may have the same effect and may be made of the same material as the second barrier layer 641, but is not limited thereto.

[0173] The fourth insulating layer 617 may be formed on the first barrier layer 631 .

[0174] The fourth insulating layer 617 may be made of the same material as at least one of the first insulating layer 611 , the second insulating layer 613 , and the third insulating layer 615 , but is not limited thereto.

[0175] The first semiconductor layer 633 may be formed on the fourth insulating layer 617 .

[0176] The first semiconductor layer 633 may be formed of an oxide semiconductor such as ZnO (zinc oxide), IGZO (indium gallium zinc oxide), and ITO (indium tin oxide), but the embodiments of the present disclosure are not limited thereto. The first semiconductor layer 633 may be formed as a single layer or multiple layers of oxide semiconductor, but is not limited thereto.

[0177] The fifth insulating layer 619 may be formed on the first semiconductor layer 633. The fifth insulating layer 619 may be made of the same material as at least one of the first insulating layer 611, the second insulating layer 613, the third insulating layer 615, and the fourth insulating layer 617, but is not limited thereto.

[0178] The fifth insulating layer 619 may be a gate insulating layer, but embodiments of the present disclosure are not limited thereto.

[0179] The first gate electrode 635 may be formed on the fifth insulating layer 619 .

[0180] The first gate electrode 635 may be made of the same material as at least one of the first barrier layer 631 , the second barrier layer 641 , and the second gate electrode 645 , but is not limited thereto.

[0181] A sixth insulating layer 621 may be formed on the first gate electrode 635 .

[0182] The sixth insulating layer 621 may be made of the same material as at least one of the first insulating layer 611 , the second insulating layer 613 , the third insulating layer 615 , the fourth insulating layer 617 , and the fifth insulating layer 619 , but is not limited thereto.

[0183] On the sixth insulating layer 621, a first source electrode 636 and a first drain electrode 637 included in the first thin film transistor 630 and a second source electrode 646 and a second drain electrode 647 included in the second thin film transistor 640 may be formed. For example, the first source electrode 636 and the first drain electrode 637 may be formed in the same layer as the second source electrode 646 and the second drain electrode 647.

[0184] The first source electrode 636, the first drain electrode 637, the second source electrode 646, and the second drain electrode 647 may be a single layer or multiple layers made of any one or alloy of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), but are not limited thereto. For example, the first source electrode 636 and the first drain electrode 637 may be formed as a triple layer of Ti / Al / Ti, but are not limited thereto.

[0185] The first source electrode 636 and the first drain electrode 637 may be electrically connected to the first semiconductor layer 633 through a first contact hole CH1 formed in the fifth insulating layer 619 and the sixth insulating layer 621 .

[0186] The first protection layer 650 may be formed on the first source electrode 636 , the first drain electrode 637 , the second source electrode 647 , and the second drain electrode 647 .

[0187] The first protective layer 650 may be formed of at least one material of organic insulating materials such as acryl resin, epoxy resin, phenol resin, polyamide resin, and polyimide resin, but is not limited thereto.

[0188] For example, the first protection layer 650 may be a first planarization layer, but the embodiments of the present disclosure are not limited thereto.

[0189] The second protective layer 660 may be formed on the first protective layer 650. The second protective layer 660 may be made of the same material as the first protective layer 650, but is not limited thereto.

[0190] For example, the second protection layer 660 may be a second planarization layer, but the embodiments of the present disclosure are not limited thereto.

[0191] The first connection electrode 670 may be formed between the first protection layer 650 and the second protection layer 660 .

[0192] The second connection electrode 671 may electrically connect the second thin film transistor 640 and the light emitting portion 680. The second connection electrode 671 may electrically connect the second thin film transistor 640 through a third contact hole CH3 formed in the first protective layer 650. The second connection electrode 671 may electrically connect the light emitting portion 680 through a fourth contact hole CH4 formed in the second protective layer 660.

[0193] The second connection electrode 671 may be formed between the first protection layer 650 and the second protection layer 660 .

[0194] The first connection electrode 670 may be electrically connected to the first thin film transistor 630 through a second contact hole CH2 formed in the first protective layer 650 .

[0195] The first connection electrode 670 and the second connection electrode 671 may be made of the same material as the first source electrode 636 , the first drain electrode 637 , the second source electrode 646 , and the second drain electrode 647 , but are not limited thereto.

[0196] The first connection electrode 670 and the second connection electrode 671 may be connection electrodes.

[0197] A light emitting portion 680 including a first electrode 681 , a light emitting layer 682 , and a second electrode 683 may be formed on the second protective layer 660 .

[0198] The first electrode 681 may be electrically connected to the second thin film transistor 640 through a fourth contact hole CH4 formed in the second protective layer 660 .

[0199] The first electrode 681 may supply holes to the light emitting layer 682 and may be made of a conductive material having a high work function.

[0200] The first electrode 681 may be made of at least one of silver (Ag), aluminum (Al), gold (Au), molybdenum (Mo), tungsten (W), chromium (Cr), alloys thereof, and oxides such as ITO (Indium Tin Oxide), but is not limited thereto.

[0201] The first electrode 681 may be an anode electrode, but embodiments of the present disclosure are not limited thereto.

[0202] The light emitting layer 682 may be formed on the first electrode 681. The light emitting layer 682 may be made of an organic material for emitting light of a specific color. The light emitting layer 682 may be configured with at least one of a red light emitting layer, a green light emitting layer, a blue light emitting layer, and / or a white light emitting layer.

[0203] The second electrode 683 may be formed on the light emitting layer 682. The second electrode 683 may be made of at least one of oxides such as ITO (Indium Tin Oxide) and IZO (Indium Zinc Oxide), silver (Ag), aluminum (Al), gold (Au), molybdenum (Mo), tungsten (W), chromium (Cr), and alloys thereof, but is not limited thereto.

[0204] The second electrode 683 may be a cathode electrode, but the embodiments of the present disclosure are not limited thereto.

[0205] The bank 690 may be formed on the second protective layer 660. The bank 690 may be formed in a region other than the light emitting region. The bank 690 may be made of an inorganic insulating material such as silicon nitride (SiNx) and silicon oxide (SiOx) or an organic insulating material like the first protective layer 650 and the second protective layer 660, but is not limited thereto.

[0206] The first region 300 may include a first light emitting region 310 and a first transmission region 330 .

[0207] The first light emitting region 310 may include the light emitting portion 680. Since the first light emitting region 310 includes the light emitting portion 680, the first region 300 may emit light like the second region 400.

[0208] The first light emitting region 310 and the first transmission region 330 may be formed through the region surrounded by the bank 690. For example, the first light emitting region 310 and the first transmission region 330 may be formed through a hole.

[0209] The area surrounded by the bank 690 may have a circular or elliptical shape, but is not limited thereto.

[0210] The first region 300 may include a first signal line 700 . The first signal line 700 may be made of the same material as the first semiconductor layer 633 .

[0211] For example, the first signal line 700 may include ITO (Indium Tin Oxide) or IGZO (Indium Gallium Zinc Oxide) as the same material as the first semiconductor layer 633 , but is not limited thereto.

[0212] Since the first signal line 700 includes an oxide having a high transmittance, such as ITO (Indium Tin Oxide) or IGZO (Indium Gallium Zinc Oxide), the first region 300 may have a higher transmittance.

[0213] The first signal line 700 may be formed as the same layer as the first semiconductor layer 633 .

[0214] Since the first signal line 700 and the first semiconductor layer 633 are formed of the same material and are formed as the same layer, the display device formed by the embodiment of the present disclosure may be formed through a high-efficiency process.

[0215] The first signal line 700 may include a first layer line 710 disposed in the first layer and a second layer line 720 disposed in the second layer. For example, the first signal line 700 may be formed as a multi-layer (e.g., a double layer), but is not limited thereto. The first signal line 700 may be formed as a single layer or may be formed as a plurality of layers.

[0216] The first line 730 may be formed on the first signal line 700 .

[0217] The first line 730 may be electrically connected to the first signal line 700 through a fifth contact hole CH5 formed in the fifth insulating layer 619, the sixth insulating layer 621, and the first protective layer 650. The first line 730 may be electrically connected to Figure 5 The second signal line may be disposed in the second region 400. For example, the first line 730 may electrically connect the first signal line 700 in the first region 300 and the second signal line in the second region 400.

[0218] Fig.10 In the display panel according to the embodiment of the present disclosure Fig. 9 An enlarged view of area D is shown.

[0219] refer to Fig. 9 and 10 , the first signal line 700 may be formed in the first region 300. Fig. 9 The same reference numerals will be given to substantially the same components as in the examples, and their repeated description will be omitted, and the description will be similar to that of Fig. 9 Different parts.

[0220] The first signal line 700 may be formed as the same layer as the first semiconductor layer 633 included in the first thin film transistor 630 .

[0221] The first signal line 700 may include a first layer line 710 and a second layer line 720 on the first layer line 710. The first layer line 710 may be formed to overlap with the second layer line 720.

[0222] The first layer line 710 may include a first side surface 710s and a third side surface 703s, the third side surface 703s being opposite to the first side surface 710s and facing the first side surface 710s. The second surface 705 is located between the first side surface 710s and the third side surface 703s. The second side surface 720s of the second layer line 720 may cover the first side surface 710s of the first layer line 710. For example, the first signal line 700 may have a coating structure. For example, the second layer line 720 may cover the first layer line 710. For example, the second layer line 720 may completely cover the first side surface 710s, the second surface 705, and the third side surface 703s of the first layer line 710.

[0223] A direction (e.g., a horizontal direction) in which the first side surface 710s of the first layer line 710 and the second side surface 720s of the second layer line 720 are stacked may be perpendicular to a direction (e.g., a vertical direction) in which the first layer line 710 disposed in the first layer and the second layer line 720 disposed in the second layer are stacked.

[0224] For example, the second layer wire 720 may include an extension portion extending in a direction opposite to a direction in which the first layer wire 710 and the second layer wire 720 are stacked. The extension portion may overlap the first side surface 710s.

[0225] The first signal line 700 may include an oxide semiconductor.

[0226] The first signal line 700 may include a transparent conductive oxide. For example, the transparent conductive oxide may include ITO (indium tin oxide), IGZO (indium gallium zinc oxide), IZO (indium zinc oxide), ZnO (zinc oxide), AZO (aluminum-doped zinc oxide), or GZO (gallium-doped zinc oxide), but is not limited thereto. The transparent conductive oxide may be an oxide semiconductor material. The oxide semiconductor material may include a transparent oxide semiconductor material.

[0227] Each of the first layer line 710 and the second layer line 720 included in the first signal line 700 may include a transparent conductive oxide.

[0228] The transparent conductive oxide of the first layer line 710 and the second layer line 720 included in the first signal line 700 may be the same.

[0229] As another example, the transparent conductive oxides of the first layer line 710 and the second layer line 720 may be different from each other. For example, the first layer line 710 may include a first transparent conductive oxide, and the second layer line 720 may include a second transparent conductive oxide different from the first transparent conductive oxide. For example, the first transparent conductive oxide may include ITO (indium tin oxide). The second transparent conductive oxide may include IZO (indium zinc oxide) or IGZO (indium gallium zinc oxide).

[0230] For example, the first layer line 710 and the second layer line 720 included in the first signal line 700 may be made of different materials.

[0231] The first side surface 710 s may be made of the same material as the first layer line 710 , and the second side surface 720 s may be made of the same material as the second layer line 720 .

[0232] Since the first signal line 700 is formed of an oxide semiconductor in the first region 300 , the light transmittance of the first region 300 may be increased.

[0233] For example, ITO (Indium Tin Oxide) may have a higher transmittance characteristic than IGZO (Indium Gallium Zinc Oxide), and IGZO (Indium Gallium Zinc Oxide) may have a lower resistance characteristic than ITO (Indium Tin Oxide).

[0234] The first line 730 may be formed on the first signal line 700. The first signal line 700 may be electrically connected to the first line 730 through the fifth contact hole CH5.

[0235] The first line 730 may be electrically connected to the second layer line 720 of the first signal line 700, which includes IGZO (Indium Gallium Zinc Oxide). Since the first line 730 is electrically connected to the second layer line 720 having lower resistance characteristics, the display device can efficiently transmit an electrical signal.

[0236] refer to Fig. 9 and 10 Since the first region 300 includes the first signal line 700, the first signal line has a first layer line 710 including a first transparent conductive oxide, such as ITO (indium tin oxide) and a second layer line 720 including a second transparent conductive oxide, such as IGZO (indium gallium zinc oxide), the first region 300 may include higher transmittance characteristics and lower resistance characteristics. However, the embodiments of the present disclosure are not limited thereto.

[0237] For example, the first signal line 700 may be configured with a single layer.

[0238] When the first signal line 700 is configured with a single layer, the first signal line 700 may include a transparent conductive oxide. For example, the transparent conductive oxide may include ITO (indium tin oxide), IZO (indium zinc oxide), IGZO (indium gallium zinc oxide), AZO (aluminum-doped zinc oxide), or GZO (gallium-doped zinc oxide), but is not limited thereto.

[0239] Fig.11 is a plan view of a display panel according to an embodiment of the present disclosure.

[0240] refer to Fig. 9 and 11 , the display device may include a first area 300 and a second area 400. The first area 300 may include a first red light emitting area 310R, a first green light emitting area 310G, and a first blue light emitting area 310B. At least one of the first red light emitting area 310R, the first green light emitting area 310G, and the first blue light emitting area 310B may be formed to overlap with the first signal line 700.

[0241] The first red light emitting region 310R, the first green light emitting region 310G, and the first blue light emitting region 310B may have different shapes, but are not limited thereto. In the embodiment of the present disclosure, the first red light emitting region 310R, the first green light emitting region 310G, and the first blue light emitting region 310B are formed in a ratio of 1:2:1, but are not limited thereto. Figures 1 to 3 One or more of the optical devices 11 and 12 or design characteristics shown in , changing the pixel structure in the first area 300, the shape of the first transmission area 330, etc.

[0242] The first signal line 700 may be formed as a double interconnection, but is not limited thereto.

[0243] The boundary portion of the first region 300 may include a first portion 730j. The first portion 730j may be electrically connected to Figure 5 A portion of at least one of the first signal line 700 and the signal line 10 shown in FIG.

[0244] For example, the first portion 730j may be electrically connected Figure 5 1 and 2. The data line 20 and the portion of the first signal line 700 are shown in FIG.

[0245] Fig.12 is a cross-sectional view of a display panel according to another embodiment of the present disclosure.

[0246] In the following, Figures 12 to 15 In, with Figures 9 to 11 Substantially the same components will be given the same figure numbers, their repeated description will be omitted, and different components will be mainly described.

[0247] refer to Fig.12 , the first region 300 may include a first signal line 700 .

[0248] The second line 740 may be formed on the first signal line 700. The second line 740 may be electrically connected to the first signal line 700 through the sixth contact hole CH6.

[0249] The second line 740 may be made of the same material as the first source electrode 636 , the first drain electrode 637 , the second source electrode 646 , and the second drain electrode 647 , and may be formed at the same layer.

[0250] Fig.13 is a plan view of a display panel according to another embodiment of the present disclosure.

[0251] refer to Fig.12 and 13 , the boundary portion of the first region 300 may include a second portion 740j. The second portion 740j may be electrically connected to Figure 5A portion of at least one of the first signal line 700 and the signal line 10 shown in FIG.

[0252] For example, the second portion 740j may be electrically connected Figure 5 . The gate line 30 and the portion of the first signal line 700 are shown in FIG.

[0253] Fig.14 is a cross-sectional view of a display panel according to another embodiment of the present disclosure.

[0254] refer to Fig.14 , the first region 300 may include a third line 750 and a fourth line 760 .

[0255] The third line 750 may be electrically connected through the seventh contact hole CH7 Figure 5 The first signal line 700 and the signal line 10 shown in FIG. The third line 750 may be made of the same material as the first source electrode 636, the first drain electrode 637, the second source electrode 646, and the second drain electrode 647, and formed in the same layer.

[0256] The fourth line 760 can be electrically connected to the eighth contact hole CH8. Figure 5 The first signal line 700 and the signal line 10 shown in FIG. The fourth line 760 may be formed by Fig. 9 and 14 The first connection electrode 670 or the second connection electrode 671 shown in FIG. 6 is made of the same material and is formed on the same layer.

[0257] The third connection electrode 770 may be formed on the second thin film transistor 640 .

[0258] The third connection electrode 770 may electrically connect the first signal line 700 and the second thin film transistor 640 .

[0259] The third connection electrode 770 may be connected to the first electrode 681. Therefore, the first signal line 700 may be connected to the first electrode 681.

[0260] The third connection electrode 770 may be made of the same material and formed at the same layer as the first connection electrode 670. The third connection electrode 770 may be formed over the first region 300 and the second region 400.

[0261] refer to Fig.14 , the first signal line 700 may include a third line 750 and a fourth line 760. The third line 750 and the fourth line 760 may be formed in different layers.

[0262] Fig.15 is a plan view of a display panel according to another embodiment of the present disclosure.

[0263] refer to Fig.14and 15 , the first region 300 may include a first signal line 700, a first red light emitting region 310R, a first green light emitting region 310G, and a first blue light emitting region 310B. The first signal line 700 may be formed as a single interconnection. The first signal line 700 may overlap at least one of the first red light emitting region 310R, the first green light emitting region 310G, and the first blue light emitting region 310B.

[0264] The first signal line 700 may include a first extension line 700e. The first signal line 700 may be formed to extend along a third direction. The first extension line 700e may extend from the first signal line 700 and may be formed along a fourth direction different from the third direction. The first extension line 700e may be formed to overlap at least one of the first red light emitting region 310R, the first green light emitting region 310G, and the first blue light emitting region 310B. Fig.15 , the first extension line 700e is shown as overlapping the first green light emitting region 310G, but is not limited thereto.

[0265] For example, at least one of the first signal lines 700 may be connected to a plurality of sub-pixels included in the first light emitting region 310 .

[0266] The first signal line 700 may include ITO (Indium Tin Oxide), but is not limited thereto.

[0267] A brief description of the above-mentioned embodiments of the present disclosure is as follows.

[0268] A display device according to an embodiment of the present disclosure may include: a substrate including a display area for displaying an image; a first thin film transistor disposed on the substrate and including a first semiconductor layer; and a signal line disposed on the substrate, wherein the display area includes a first area including a first transmission area and a second area outside the first area, wherein the signal line includes a first signal line disposed in the first area and a second signal line disposed in the second area, wherein a portion of the first signal line is disposed in the same layer as the first semiconductor layer, and wherein the first signal line includes an oxide semiconductor material.

[0269] According to at least one embodiment of the present disclosure, the first signal line may include a first layer line and a second layer line. The first layer line and the second layer line may be electrically connected to each other. The first layer line and the second layer line may include different materials.

[0270] According to at least one embodiment of the present disclosure, the second layer wire may completely cover the first layer wire. The second layer wire may be located on the top and side of the first layer wire.

[0271] According to at least one embodiment of the present disclosure, the first layer line may include a first side surface, and the second layer line may include a second side surface. The second side surface of the second layer line may cover the first side surface of the first layer line.

[0272] According to at least one embodiment of the present disclosure, the first layer line may include a first transparent conductive oxide, and the second layer line may include a second transparent conductive oxide different from the first transparent conductive oxide.

[0273] According to at least one embodiment of the present disclosure, the first signal line may be configured with a single layer.

[0274] According to at least one embodiment of the present disclosure, the first signal line may include a transparent conductive oxide.

[0275] According to at least one embodiment of the present disclosure, the display device may further include a first protective layer above the first thin film transistor; a second protective layer on the first protective layer; and a connecting electrode between the first protective layer and the second protective layer. The display device may further include a first line disposed in the same layer as the connecting electrode and disposed in the first region, and the first signal line may be connected to the first line through a contact hole.

[0276] According to at least one embodiment of the present disclosure, the first line may be electrically connected to the data line.

[0277] According to at least one embodiment of the present disclosure, the first thin film transistor may further include a first source electrode and a first drain electrode on the first semiconductor layer, and the display device may further include a second line disposed in the same layer as the first source electrode and the first drain electrode and disposed in the first region. The first signal line may be connected to the second line through a contact hole.

[0278] According to at least one embodiment of the present disclosure, the second line may be electrically connected to the gate line.

[0279] According to at least one embodiment of the present disclosure, the display device may further include a second thin film transistor disposed to be separated from the first thin film transistor and including a second semiconductor layer. The first semiconductor layer and the second semiconductor layer may be made of different materials.

[0280] According to at least one embodiment of the present disclosure, the display device may further include a first electrode above the signal line; a light emitting layer on the first electrode; and a second electrode on the light emitting layer. The second electrode may include a hole in the first transmission area.

[0281] According to at least one embodiment of the present disclosure, the first region may include a first light emitting region, and the second region may include a second light emitting region. The first light emitting region and the second light emitting region may have different pixel structures.

[0282] According to at least one embodiment of the present disclosure, the display device may further include a third area outside the first area. The third area may include a third light emitting area, and the second light emitting area and the third light emitting area may have different pixel structures.

[0283] According to at least one embodiment of the present disclosure, the first signal line may be connected to the first electrode.

[0284] According to at least one embodiment of the present disclosure, the display device may further include a plurality of sub-pixels in the first area, and at least one of the first signal lines may be connected to the plurality of sub-pixels.

[0285] According to at least one embodiment of the present disclosure, the display device may further include an optical device located below the substrate and overlapping at least a portion of the first region. The optical device may perform a predetermined operation based on light received by transmitting the first region.

[0286] For example, the light received by the first region for the optical device to perform the predetermined operation may be visible light, infrared light, or ultraviolet light. As another example, the light may be an electromagnetic wave having a wavelength band different from that of visible light, infrared light, and ultraviolet light. For example, the optical device may include at least one of an image sensor (e.g., a camera) that performs image sensing processing based on the light received by the first region, a proximity sensor for detecting surrounding objects or human bodies, and a brightness sensor for estimating surrounding brightness (e.g., illuminance).

[0287] According to at least one embodiment of the present disclosure, the first signal line may include a transparent conductive oxide, and the second signal line may not include the transparent conductive oxide.

[0288] According to at least one embodiment of the present disclosure, the first signal line may be configured with multiple layers. The second signal line may be configured with a single layer.

[0289] The above description has been introduced to enable those skilled in the art to implement and use the technical ideas of the present disclosure, and the above description is provided in the context of specific applications and their requirements. Various modifications, additions and substitutions to the embodiments described in the present invention will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the present disclosure. The above description and accompanying drawings provide examples of the technical ideas of the present disclosure for illustrative purposes only. That is, the disclosed embodiments are intended to illustrate the scope of the technical ideas of the present disclosure.

Claims

1. A display device, comprising: A substrate, the substrate comprising a display area for displaying an image; a first thin film transistor, the first thin film transistor being disposed on the substrate and comprising a first semiconductor layer; as well as a signal line, wherein the signal line is arranged on the substrate, The display area includes a first area and a second area outside the first area, the first area includes a first transmission area, The signal line includes a first signal line arranged in the first area and a second signal line arranged in the second area. Part of the first signal line and the first semiconductor layer are arranged on the same layer, and Wherein, the first signal line comprises an oxide semiconductor material.

2. The display device according to claim 1, wherein: The first signal line includes a first layer line arranged in the first layer and a second layer line arranged in the second layer, and The first layer wire and the second layer wire are electrically connected to each other and include different materials from each other.

3. The display device according to claim 2, wherein: The first layer line includes a first side surface, a third side surface opposite to the first side surface, and a second surface located between the first side surface and the third side surface, and The second layer line completely covers the first side surface, the second surface and the third side surface of the first layer line.

4. The display device according to claim 2, wherein: The first layer line includes a first side surface, The second layer line includes a second side surface, and The second side surface of the second layer line covers the first side surface of the first layer line.

5. The display device according to claim 2, wherein: The first layer of wires includes a first transparent conductive oxide, and The second layer line includes a second transparent conductive oxide different from the first transparent conductive oxide.

6. The display device according to claim 1, wherein: The first signal line is configured with a single layer.

7. The display device according to claim 6, wherein: The first signal line includes a transparent conductive oxide.

8. The display device according to claim 1, further comprising: a first protective layer on the first thin film transistor; a second protective layer on the first protective layer; A connecting electrode between the first protective layer and the second protective layer; as well as a first line disposed in the same layer as the connection electrode and disposed in the first region, Wherein, the first signal line is electrically connected to the first line through a contact hole.

9. The display device according to claim 8, further comprising: A data line is electrically connected to the first line.

10. The display device according to claim 1, wherein: The first thin film transistor further includes a first source electrode and a first drain electrode on the first semiconductor layer. The display device further includes a second line disposed in the same layer as the first source electrode and the first drain electrode and disposed in the first region, and The first signal line is electrically connected to the second line through a contact hole.

11. The display device according to claim 10, further comprising: A gate line is electrically connected to the second line.

12. The display device according to claim 1, further comprising: a second thin film transistor disposed apart from the first thin film transistor, the second thin film transistor including a second semiconductor layer, The first semiconductor layer and the second semiconductor layer are made of different materials.

13. The display device according to claim 1, further comprising: a first electrode on the signal line; a light-emitting layer on the first electrode; as well as a second electrode on the light-emitting layer, Wherein, the second electrode includes a hole in the first transmission area.

14. The display device according to claim 1, wherein: The first region includes a first light emitting region, The second region includes a second light emitting region, and The first light emitting area and the second light emitting area have different pixel structures.

15. The display device according to claim 14, further comprising: a third area outside the first area, Wherein, the third region includes a third light emitting region, and The first light-emitting area and the third light-emitting area have different pixel structures.

16. The display device according to claim 13, wherein: The first signal line is electrically connected to the first electrode.

17. The display device according to claim 1, further comprising: a plurality of sub-pixels in the first area, At least one of the first signal lines is electrically connected to the plurality of sub-pixels.

18. The display device according to claim 1, further comprising: an optical device located below the substrate and overlapping at least a portion of the first region, The optical device performs a predetermined operation based on the light received by transmitting through the first area.

19. The display device according to claim 1, wherein: The first signal line includes a transparent conductive oxide, and The second signal line does not include the transparent conductive oxide.

20. The display device according to claim 1, wherein: The first signal line is configured with multiple layers, and the second signal line is configured with a single layer.

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