Display panel and display device including the display panel

Abstract

This disclosure relates to a display panel and a display device including the display panel. The display panel may include: a first region having a plurality of pixels; and a second region having at least two pixel groups. Each of the at least two pixel groups may include: at least one pixel; a light-transmitting portion disposed between the at least two pixel groups to transmit light; and an aperture formed as a boundary corresponding to the light-transmitting portion. A cathode associated with the at least one pixel may be disposed in at least a portion of the aperture.

Description

[0001] Cross-reference to related applications

[0002] This application claims the benefit and priority of Korean Patent Application No. 10-2021-0130414, filed on September 30, 2021, the entire contents of which are incorporated herein by reference for all purposes, as fully set forth herein. Technical Field

[0003] This disclosure relates to devices, including but not limited to display panels and display devices including such display panels. Background Technology

[0004] With the development of information technology, various display devices are widely used, such as laptops, tablet PCs, smartphones, and smartwatches. In addition to image display functions, such display devices may also have data generation capabilities using various methods. Electronic devices can include display panels for display functions and optical sensors for data generation. Optical sensors can include, for example, charge-coupled devices (CCDs), cameras, and infrared sensors.

[0005] The display panel may include signal lines or electrode patterns made of light-shielding material. Therefore, to prevent light directed at the optical sensor from being reflected or absorbed by the display panel, the optical sensor can be mounted on the display panel. In this case, the bezel width of the display panel may increase due to the area where the optical sensor is located, or the area of ​​the display panel overlapping with the optical sensor may be covered by the optical sensor, thus limiting image display functionality. In other words, because displaying an image within a portion of the display area of ​​the display panel can be prevented, full-screen display may be difficult to achieve.

[0006] The descriptions provided in the background section should not be considered prior art simply because they are mentioned in or associated with the background section. The background section may include information describing one or more aspects of the subject matter art. Summary of the Invention

[0007] In one or more implementations, the object of embodiments of this disclosure is to provide a display panel for minimizing cathode bulging that may occur during a cathode patterning process related to the formation of the light-transmitting portion, and a display device having the display panel.

[0008] However, the purpose of this disclosure is not limited to those mentioned above, and those skilled in the art will clearly understand additional purposes and features of this disclosure from the following description of the disclosure.

[0009] In this disclosure, a display panel includes: a first region having a plurality of pixels; and a second region including at least two pixel groups. Each of the at least two pixel groups may include at least one pixel; a light-transmitting portion disposed between the at least two pixel groups to transmit light; and an aperture formed as a boundary corresponding to the light-transmitting portion. A cathode associated with at least one pixel may be disposed in at least a portion of the aperture.

[0010] In this disclosure, a display device includes a display panel comprising: a first region having a plurality of pixels; and a second region comprising at least two pixel groups. Each of the at least two pixel groups may include at least one pixel; a light-transmitting portion disposed between the at least two pixel groups to transmit light; and an aperture formed as a boundary corresponding to the light-transmitting portion. A cathode associated with at least one pixel may be disposed in at least a portion of the aperture.

[0011] Additional features and advantages will be set forth in part in the description which follows, and in part will be obvious from the description or may be learned by practicing the inventive concept presented herein. Other features and aspects of the inventive concept can be realized and obtained by means of the structures particularly pointed out in the written description or derived therefrom, the claims, and the accompanying drawings. Specific details of other exemplary embodiments are included in the detailed description and the accompanying drawings.

[0012] According to one or more examples of the display device disclosed herein, cathode bulging that may occur during the cathode patterning process related to the formation of the light-transmitting portion can be minimized by placing the cathode in a hole formed corresponding to the boundary of the light-transmitting portion.

[0013] However, the effects that can be obtained from the implementation of this disclosure are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description herein.

[0014] Furthermore, other methods, features, configurations, and advantages will become apparent to those skilled in the art upon study of the following figures and detailed embodiments. It is intended that all such additional methods, features, configurations, and advantages be included in this specification, within the scope of this disclosure, and protected by the appended claims. Nothing in this section should be construed as limiting these claims. Further aspects and advantages are discussed below.

[0015] It should be understood that both the foregoing general description of this disclosure and the following detailed description are exemplary and illustrative, and are intended to provide further explanation of the claimed disclosure. Attached Figure Description

[0016] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this application. The drawings illustrate various aspects of the implementation of the present disclosure and, together with the description, serve to illustrate the principles of the present disclosure.

[0017] Figure 1 A surface of a display device according to an example embodiment of the present disclosure is shown.

[0018] Figure 2 The arrangement of pixels in a first region of a display device according to an example embodiment of the present disclosure is shown.

[0019] Figure 3 The arrangement of pixels in a second region of a display device according to an example embodiment of the present disclosure is shown.

[0020] Figure 4 This is a cross-sectional view of a display device according to an exemplary embodiment of the present disclosure.

[0021] Figure 5 This is a diagram illustrating the holes in a display device according to an exemplary embodiment of the present disclosure.

[0022] Figure 6 and Figure 7 This is a diagram illustrating an example and arrangement of holes in a display device according to an exemplary embodiment of the present disclosure.

[0023] Figure 8A , Figure 8B and Figure 8C This is a diagram illustrating an example of a hole in a display device according to an exemplary embodiment of the present disclosure.

[0024] Figure 9A and Figure 9B This is a diagram illustrating an example of a cathode disposed in a hole of a display device according to an exemplary embodiment of the present disclosure.

[0025] In the accompanying drawings and detailed description, unless otherwise stated, the same reference numerals should be understood to denote the same elements, features, and structures. For clarity, illustration, and convenience, the relative dimensions and descriptions of these elements may be exaggerated. Detailed Implementation

[0026] Implementations of this disclosure will now be described in detail, examples of which can be shown in the accompanying drawings.

[0027] In the following description, the structures, implementations, methods, and operations described herein are not limited to one or more specific examples set forth herein, and may be varied as is known in the art, unless otherwise indicated. Unless otherwise indicated, the same reference numerals always denote the same elements. The names of the various elements used in the following description are chosen for convenience of writing the specification only and may therefore differ from the names used in actual products.

[0028] The advantages and features of this disclosure, as well as methods for implementing them, will become apparent from the following detailed description of embodiments taken in conjunction with the accompanying drawings. However, this disclosure may be embodied in different forms and should not be construed as limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure is sufficiently thorough and complete to assist those skilled in the art in fully understanding its scope. Furthermore, the scope of protection of this disclosure is defined by the claims and their equivalents. In the following description, detailed descriptions of relevant known functions or configurations may be omitted where such descriptions might unnecessarily obscure aspects of this disclosure.

[0029] In one or more aspects, the terminology used in the embodiments is selected, as far as possible, as commonly used terms that are currently widely used, while taking into account the functionality of this disclosure. These terms may vary depending on the intent of those skilled in the art, precedent, the emergence of new technologies, or other considerations. Additionally, the inventor may arbitrarily choose certain terms, and in such cases, the meaning of the terms will be described in detail in the corresponding description. Therefore, the terminology used in this disclosure should be defined based on the meaning of the terms and the overall content of this disclosure, rather than simply the names of the terms.

[0030] In this disclosure, when a part "includes" an element, it means that other elements may be included, rather than excluding other elements, unless otherwise stated.

[0031] The expression “at least one of A, B and C” can include configurations of A alone, B alone, C alone, A and B, A and C, B and C, or all of A, B and C.

[0032] The expressions "first element," "second element," and " / or" "third element" should be understood as one of the first, second, and third elements, or any or all combinations of the first, second, and third elements. For example, A, B, and / or C can refer to only A, only B, only C, A, B, and C, or all of A, B, and C.

[0033] The shapes, dimensions, areas, ratios, angles, quantities, etc. disclosed in the accompanying drawings for explaining the embodiments of this disclosure are merely examples, and therefore, this disclosure is not limited to the details shown.

[0034] When using terms such as “comprising,” “having,” “including,” “containing,” “constituting,” “forming,” “comprise,” etc., one or more other elements may be added, unless terms such as “only” are used. Unless otherwise expressly stated, singular terms may include plural forms. Furthermore, when interpreting an element, it will be interpreted as including a range of errors or tolerances, even if no explicit description of such a range of errors or tolerances is provided.

[0035] When describing positional relationships, for example, when using terms such as "on," "above," "below," "above," "below," "under," "near," "close to," "adjacent to," "adjoining," or "next to" to describe the positional relationship between two parts, one or more other parts may be positioned between the two parts, unless more restrictive terms such as "closely adjacent," "directly," or "tightly" are used. For example, when a structure is described as being positioned "on," "above," "below," "above," "below," "near," "close to," "adjacent to," "adjoining to," or "next to" another structure, such a description should be interpreted to include situations where the structures are in contact with each other and where one or more additional structures are set or inserted therebetween. Furthermore, the terms "left," "right," "top," "bottom," "downward," "upward," "above," "below," etc., refer to any frame of reference.

[0036] When describing temporal relationships, discontinuous situations may be included when the time sequence is described as such as "after", "following", "next", "before", unless more restrictive terms such as "immediately after", "immediately", or "directly" are used.

[0037] The expression “connected,” “coupled,” or “adheded” to another element or layer means that the element or layer may not only be directly connected, coupled, or adhered to another element or layer, but also indirectly connected, coupled, or adhered to another element or layer unless otherwise indicated, with one or more intermediary elements or layers disposed or inserted between the elements or layers.

[0038] The description of a component or layer as "contacting" or "overlapping" with another component or layer means that the component or layer can not only directly contact or overlap with another component or layer, but also indirectly contact or overlap with another component or layer unless otherwise indicated, with one or more intervening components or layers disposed or inserted between the components or layers.

[0039] When terms such as "first" and "second" are used herein to describe various elements or components, it should be understood that these elements or components are not limited thereto. These terms are used only to distinguish one element from other elements. For example, without departing from the scope of this disclosure, a first element may be a second element, and similarly, a second element may be a first element.

[0040] For ease of description, the area, length, or thickness of each component described in this disclosure is shown, and the invention is not necessarily limited to the area, length, and thickness of the components shown.

[0041] Features of each of the embodiments of this disclosure may be combined or coupled to each other in part or in whole, and may be technically linked or operable together. Furthermore, each of the embodiments may be implemented independently of each other, or may be implemented together in a related relationship.

[0042] Furthermore, the terminology described later is defined with reference to the functionality in the implementation of this disclosure, and these terms may vary depending on the intent or habits of the user or operator. Therefore, the terminology should be interpreted based on the content throughout this disclosure.

[0043] Expressions such as "first," "second," and "third" are terms used to classify configurations according to exemplary embodiments, and embodiments are not limited to these terms. Therefore, it should be noted that, according to exemplary embodiments, even the same terms may refer to different components.

[0044] The following exemplary embodiments are described with reference to organic light-emitting diode (OLED) display devices. However, the embodiments of this disclosure are not limited to organic light-emitting display devices, but can be applied to inorganic light-emitting display devices that include inorganic light-emitting materials. For example, the embodiments of this disclosure can be applied to quantum dot display devices. In addition, besides display devices, the embodiments of this disclosure can also be applied to various devices capable of performing inspections using inspection equipment.

[0045] In the following description, various exemplary embodiments of the present disclosure will be described with reference to the accompanying drawings. Furthermore, for ease of description, the scale of each element illustrated in the drawings may differ from the actual scale. Therefore, the illustrated elements are not limited to the specific scale shown in the drawings.

[0046] Figure 1 A surface of a display device according to an example embodiment of the present disclosure is shown. For example, Figure 1 It could be a diagram showing the front surface of the display device.

[0047] Figure 1An example of implementing the display device 100 in the form of a smartphone is shown; however, the implementation is not limited thereto. The display device 100 can be implemented as one or more of various electronic devices (e.g., smartwatches, tablet PCs, etc.).

[0048] Reference Figure 1 The display device 100 may include a display panel, which includes an active area (which may be referred to as the display area) AA for image display functions and an optical sensor for image capture functions (or sensing functions).

[0049] The display panel can be configured to display various content on the display device 100 and may include, for example, light-emitting elements (e.g., organic light-emitting devices). The display panel may be disposed on the front surface of the display device 100. In this disclosure, descriptions of general aspects of the display panel that are obvious to those skilled in the art may be omitted.

[0050] An optical sensor can correspond to an optical element used to detect light passing through a display panel. For example, an optical sensor is an optical element used to generate an electrical signal corresponding to the amount of light reflected by a target object, and may include at least one of, for example, an imaging device, a charge-coupled device (CCD), and an infrared sensor.

[0051] In an example implementation, a portion of the display area AA of the display panel may overlap with an optical sensor disposed below the display panel. In this case, a portion of the display area AA may correspond to the sensing area SA (or light-sensing area) overlapping with the optical sensor, while another portion of the display area AA may correspond to a general area GA distinct from the sensing area.

[0052] In an example implementation, the sensing region SA can provide both image (or image) display and light transmission functions. For example, when an image is displayed in the sensing region SA, light directed towards the optical sensor can be transmitted. In this way, the area within the sensing region SA through which light directed towards the optical sensor is transmitted can be referred to as the light-transmitting portion, and the area within the sensing region SA other than the light-transmitting portion can be referred to as the pixel region. However, this disclosure is not limited thereto.

[0053] In the example implementation, at least one pixel can be disposed in both the sensing area SA and the general area GA. The pixel density in the sensing area SA can be lower than the pixel density in the general area GA. That is, the pixel density of the sensing area SA can be lower than the pixel density of the general area GA. The resolution of the sensing area SA can be lower than the resolution of the general area GA.

[0054] Figure 1An example is shown where the sensing area SA is located in the upper center of the display device 100; however, this disclosure is not limited thereto, and the sensing area SA may be located in other parts of the display device 100. For example, the sensing area SA may be located in the upper left, upper right, or center of the display device 100.

[0055] In the following text, the general area GA may be referred to as the first area and the sensing area SA may be referred to as the second area; however, the implementation of this disclosure is not limited thereto.

[0056] Figure 2 The arrangement of pixels in a first region of a display device according to an example embodiment of the present disclosure is shown.

[0057] Reference Figure 2 The first region (or general region) GA comprises pixels arranged in pixels per inch (PPI). Each of the pixels may include at least one subpixel selected from red (R) subpixels, green (G) subpixels, and blue (B) subpixels. In some cases, at least some of the pixels may also include white (W) subpixels (not shown).

[0058] In the example implementation, the luminous efficiency of the light-emitting element can be determined based on the color of the sub-pixels. Taking this into account, the size of the sub-pixels can be determined based on their color. For example, among the R, G, and B sub-pixels, the B sub-pixel can be the largest, and the G sub-pixel can be the smallest.

[0059] Pixels can be repeatedly arranged along a first direction (X-axis), a second direction orthogonal to the first direction (Y-axis), and the tilt angle direction between the first and second directions (Θx and Θy axes). Θx and Θy can indicate the direction of the tilt axis, where the X-axis and Y-axis are each rotated by 45°.

[0060] Figure 3 The arrangement of pixels in a second region of a display device according to an example embodiment of the present disclosure is shown.

[0061] Reference Figure 3 The second region (or sensing region) SA may include a pixel group PG containing at least one pixel and a light-transmitting portion AG. As shown, the second region SA may include multiple pixel groups and multiple light-transmitting portions. Each of the pixel groups PG may be configured to be spaced apart from each other by a predetermined distance. The light-transmitting portion AG may be disposed in the space between the pixel groups PG.

[0062] In an example embodiment, light from outside the display device can be received through the light-transmitting portion AG by a lens configured to correspond to the light-transmitting portion AG. The light-transmitting portion AG may include a transparent medium with high transmittance. The light-transmitting portion AG may include a non-metallic material. For example, the light-transmitting portion AG may be made of a transparent insulating material and does not include metal lines or pixels. According to the example embodiment, the light-transmitting portion AG may be defined as the area where all metal layers are removed from the screen, but this disclosure is not limited thereto.

[0063] In the example implementation, the transmittance of the display area can be determined based on at least one of the number and size of the light-transmitting portions AG. For example, the transmittance of the display area can have a higher value as the size of the light-transmitting portions AG increases or the number of light-transmitting portions AG increases. (Comparison) Figure 2 and Figure 3 Since the light-transmitting portion AG is located in the second region SA, the transmittance of the second region SA can be higher than that of the first region GA. Therefore, the PPI of the second region SA can be lower than that of the first region GA.

[0064] In an example implementation, pixel group PG may include at least one sub-pixel corresponding to one of R, G, and B. For example, as Figure 3 As shown, a pixel group PG may include one R sub-pixel, two G sub-pixels, and one B sub-pixel.

[0065] In an example implementation, a pixel group PG set in a second region SA may include two pixels, PIX1 and PIX2, each of which includes at least one sub-pixel. For example, pixel group PG may include a first pixel PIX1 and a second pixel PIX2. The first pixel PIX1 may include an R sub-pixel and a G sub-pixel, and the second pixel PIX2 may include a B sub-pixel and a G sub-pixel.

[0066] In an example implementation, inadequate color representation in each of the first pixel PIX1 and the second pixel PIX2 can be compensated for by averaging the corresponding color data between adjacent pixels using a subpixel rendering algorithm. For example, white can be represented by combining the R, G, and B subpixels of the first pixel PIX1 and the second pixel PIX2.

[0067] In the example implementation, the shape of the light-transmitting portion AG and the arrangement shape of the pixel group PG can be implemented in various forms. For example, the light-transmitting portion AG can be formed into a circular or elliptical shape. In this case, a captured image with minimized flicker can be obtained, and the transmittance of the second region SA can be improved. The pixel group PG can have a circular, oval, elliptical, rhomboid, or square shape.

[0068] In the example embodiment, the light-transmitting portion AG may not include metal. In this respect, the metal used as the cathode electrode (or first electrode) (which may be referred to as the cathode) in the manufacturing steps of the display panel can be removed from the light-transmitting portion AG. For example, firstly, the metal used as the cathode can be uniformly deposited on a second region. Thereafter, a process such as laser removal can be used to remove the metal from the region corresponding to the light-transmitting portion AG from the second region.

[0069] In an example implementation, each of the pixel group PG may include a circuit layer and a light-emitting device, wherein the circuit layer contains pixel circuitry for each sub-pixel. At least a portion of the circuit layer and the light-emitting device layer may overlap or be spatially separated.

[0070] In the example implementation, the circuit layer of the pixel group PG can be arranged in a shape corresponding to the arrangement of the pixel group PG. For example, if the pixel group PG is arranged in a diamond or square shape, the circuit layer can also be arranged in a diamond or square shape.

[0071] Figure 4 This is a cross-sectional view of a display device according to an exemplary embodiment of the present disclosure. Specifically, Figure 4 This is an example of a diagram used to illustrate the cross-section of the light-transmitting portion and the peripheral area of ​​a display device.

[0072] exist Figure 4 In this context, a thin-film transistor (TFT) can represent the driving transistor DT in a pixel circuit. (See reference...) Figure 4 Circuit layers, light-emitting device layers, etc., can be stacked on substrates PI1 and PI2 in the pixel region PIX. Substrates PI1 and PI2 can include a first PI substrate PI1 and a second PI substrate PI2. An inorganic layer IPD can be located between the first PI substrate PI1 and the second PI substrate PI2. The inorganic layer IPD can prevent water penetration.

[0073] A first buffer layer BUF1 may be formed on a second substrate PI2. A first metal layer BSM may be formed on the first buffer layer BUF1, and a second buffer layer BUF2 may be formed on the first buffer layer BUF1 to surround the first metal layer BSM. Each of the first buffer layer BUF1 and the second buffer layer BUF2 may be formed of an inorganic insulating material and may include one or more insulating layers.

[0074] In some cases, the first metal layer BSM can be formed below the first buffer layer BUF1. In this case, the first buffer layer BUF1 and the second buffer layer BUF2 can be formed on the first metal layer BSM.

[0075] The first metal layer BSM can be patterned in a photolithography process. The first metal layer BSM may include a light-shielding pattern. The light-shielding pattern can block external light, preventing light from reaching the active layer of the TFT, thereby preventing photocurrent formed in the TFT in the pixel region. If the light-shielding pattern is formed of a metal with a lower absorption coefficient for the laser wavelength used in the laser ablation process compared to the metal layer (e.g., cathode) to be removed from the sensing region SA, the light-shielding pattern can be used as a shielding layer to block the laser beam LB in the laser ablation process.

[0076] In the example implementation, the first metal layer BSM can be configured to cover the lower region of the hole 410 as shown, and related examples are slightly different. Figure 5 describe.

[0077] The active layer ACT can be formed from semiconductor material on the second buffer layer BUF2 and patterned by photolithography. The active layer ACT can include active patterns for each of the TFTs in the pixel circuit and the TFTs in the gate driver. A portion of the active layer ACT can be metallized by ion doping. The metallized portion can be used as a jumper pattern to connect the metal layer at some nodes of the pixel circuit to connect the components of the pixel circuit.

[0078] The gate insulating layer GI can be formed on the second buffer layer BUF2 to cover the active layer ACT. The gate insulating layer GI can be formed of an inorganic insulating material.

[0079] The second metal layer (GATE) can be formed on the gate insulating layer (GI). The second metal layer (GATE) can be patterned using a photolithography process. The second metal layer (GATE) can be used as a gate line, a gate electrode, the lower electrode of a storage capacitor, and a jumper pattern connecting the pattern of the first metal layer (BSM) and the pattern of the third metal layer (TM).

[0080] A first interlayer insulating layer ILD1 can be formed on the gate insulating layer GI to cover the second metal layer GATE. A third metal layer TM can be formed on the first interlayer insulating layer ILD1, and a second interlayer insulating layer ILD2 can cover the third metal layer TM. The third metal layer TM can be patterned by a photolithography process. The third metal layer TM may include a metal pattern such as the upper electrode of a storage capacitor. The first interlayer insulating layer ILD1 and the second interlayer insulating layer ILD2 may include inorganic insulating materials.

[0081] A fourth metal layer SD1 can be formed on the second interlayer insulating layer ILD2, and an inorganic insulating layer PAS1 and a first planarization layer PLN1 can be stacked on the fourth metal layer SD1. A fifth metal layer SD2 can be formed on the first planarization layer PLN1. The first planarization layer PLN1 and the second planarization layer PLN2 can be formed of organic insulating materials to planarize the surface.

[0082] The fourth metal layer SD1 can be connected to the first and second electrodes of the TFT connected to the active pattern of the TFT through contact holes passing through the second interlayer insulating layer ILD2. Data lines and power lines can be implemented using either the fourth metal layer SD1 or the fifth metal layer SD2.

[0083] The anode electrode (or second electrode) (which may be referred to as the anode) AND can be formed on the second planarization layer PLN2. The anode AND can be the first electrode layer of a light-emitting element, such as an organic light-emitting diode (OLED). The anode AND can be connected to the electrode driving the TFT through contact holes passing through the second planarization layer PLN2. The anode AND can be formed of a transparent electrode material or a translucent electrode material.

[0084] A pixel defining layer (or dam) BNK can cover the anode AND of a light-emitting element (e.g., OLED). The pixel defining layer BNK can be patterned to define light-emitting regions (or opening regions) through which light travels from each pixel to the outside. Spacers SPC can be formed on the pixel defining layer BNK.

[0085] In some cases, the same organic insulating material can be used to integrate the pixel-defining layer (BNK) and the spacer (SPC). The spacer (SPC) ensures a gap between the fine metal mask (FMM) and the anode AND, preventing the FMM from contacting the anode AND during the deposition process of the emitter layer (or organic compound) EL.

[0086] An emitting layer EL can be formed in each of the light-emitting regions of a pixel defined by a pixel defining layer BNK. A cathode CAT, which can be a second electrode layer of a light-emitting element (e.g., an OLED), can be formed on the entire surface of the display device 100 to cover the pixel defining layer BNK, the spacer SPC, and the emitting layer EL. The cathode CAT can be connected to a low power supply voltage (VSS) line formed by any of the underlying metal layers.

[0087] Although not shown, a capping layer CPL can be disposed on the cathode CAT. The capping layer CPL can cover the cathode CAT. The capping layer CPL can be formed of an inorganic insulating material to block the penetration of air and venting from the organic insulating material applied to the capping layer CPL to protect the cathode CAT. An encapsulation layer can be disposed on the capping layer CPL. According to an example embodiment, the capping layer CPL can be included in the encapsulation layer.

[0088] The encapsulation layer may include inorganic insulating layers PAS2 and PAS3, and a foreign matter compensation layer PCL located between the inorganic insulating layers PAS2 and PAS3. For example, the lower inorganic insulating layer PAS2 may cover the capping layer CPL, and the foreign matter compensation layer PCL may be formed on the lower inorganic insulating layer PAS2. The foreign matter compensation layer PCL may include an organic insulating material. The upper inorganic insulating layer PAS3 may be formed on the foreign matter compensation layer PCL.

[0089] The touch configuration can be disposed on the upper inorganic insulating layer. For example, the touch buffer ToE-BUF and the touch insulating layer ToE-ILD can be disposed on the upper inorganic insulating layer. The touch bridge ToE-B and the touch sensor ToE-S can be disposed in holes formed in at least a portion of the touch insulating layer. At least a portion of the touch sensor ToE-S can be disposed on the touch bridge ToE-B, and at least another portion of the touch sensor ToE-S can be disposed on the touch insulating layer ToE-ILD. Photoacrylic PAC can be disposed on the touch insulating layer ToE-ILD and the touch sensor ToE-S. The photoacrylic PAC can be an organic insulating layer.

[0090] Still refer to Figure 4 The cathode CAT is disposed in the pixel region PIX, but the cathode CAT can be omitted in the light-transmitting portion AG between the pixel regions PIX. Therefore, an opening without the cathode CAT can be formed. That is, the cathode CAT can be formed to the boundary of the opening. In this case, an opening as wide as the region corresponding to the light-transmitting portion AG can be formed. The opening can be formed by forming the cathode CAT on the pixel defining layer BNK and then simultaneously etching the cathode CAT and the pixel defining layer BNK. However, this disclosure is not necessarily limited to this, and the opening can be formed in various ways.

[0091] Sensor (or optical sensor) 400 can be disposed in sensing area SA. Specifically, sensor 400 can be disposed in at least a portion of the area of ​​the display panel corresponding to sensing area SA. For example, sensor 400 can be disposed below light-transmitting portion AG and below pixel area PIX adjacent to light-transmitting portion AG. Sensor 400 may include optical sensors, but this disclosure is not limited thereto, and may include various types of sensors, such as infrared sensors and / or ultraviolet sensors.

[0092] The aperture 410 can be disposed in at least a portion of the boundary (or the boundary of the opening) of the light-transmitting portion AG. For example... Figure 4 As shown, the hole 410 can be disposed on the same plane as at least a portion of the second planarization layer PLN2. A cathode CAT can be disposed in at least a portion of the hole 410 formed at the boundary of the opening. The hole 410 can be formed to have a predetermined depth. The depth of the hole 410 is predetermined and can be less than the thickness of the second planarization layer PLN2.

[0093] In an example embodiment, the aperture 410 may be formed to correspond to the boundary of the light-transmitting portion AG. For example, the aperture 410 may be formed to correspond to the boundary of the light-transmitting portion AG along the boundary of the light-transmitting portion AG. In this case, the aperture 410 may be formed as described later. Figure 6 and Figure 7 The cathode CAT to be described has the same shape.

[0094] Figure 4 An example is shown in which the cathode CAT is disposed along the surface of the aperture 410 to the boundary line of the light-transmitting portion AG; however, the present disclosure is not limited thereto, and the cathode CAT may be disposed on at least a portion of the surface of the aperture 410. Similar to the pixel region PIX, the inorganic insulating layer PAS2 may be disposed on the cathode CAT, wherein the cathode CAT is disposed in the aperture 410.

[0095] In the example embodiment, multiple holes can be configured. That is, multiple holes can be provided at the boundaries of the light-transmitting portion AG. The upper surface of the wall separating the multiple holes can be provided on a different plane than the upper surface of the second planarization layer PLN2. However, this disclosure is not limited thereto, and in some cases, the upper surface of the wall separating the multiple holes can be provided on the same plane as the upper surface of the second planarization layer PLN2. A more detailed description in connection with this can be found in [reference]. Figure 8A , Figure 8B and 8C To provide.

[0096] If multiple holes are configured, the bottom surface area of ​​the holes can be increased proportionally to the number of holes, but this disclosure is not limited thereto. If the bottom surface area of ​​the holes is increased proportionally to the number of holes, the area of ​​the cathode CAT on the holes located at the boundaries of the light-transmitting portion AG may also increase. Some specific examples related to this can be referred to later. Figure 6 and Figure 7 To describe.

[0097] Figure 5 This is a diagram illustrating the holes in a display device according to an exemplary embodiment of this disclosure. Specifically, Figure 5 A cross-section of an example in which an aperture and a cathode are disposed around a light-transmitting portion is conceptually shown. A sensor 530 may be positioned below the planarization layer 512 and the metal layer 517. The sensor 530 may be positioned corresponding to an opening in the metal layer 517.

[0098] Reference Figure 5 The light-transmitting portion may include an opening 510 with the cathode 515 removed. Holes 520 may be provided at both ends of the opening 510. Holes 520 may be formed in a shape corresponding to the boundary shape along the boundary of the opening 510. For example, if the opening 510 is formed in a circular shape and the boundary of the opening 510 is circular, then holes 520 may be formed along the boundary of the opening 510 in a circular shape surrounding the boundary of the opening 510. An example of forming a hole 520 along the boundary of the opening 510 will be referred to later. Figure 6 and Figure 7 describe.

[0099] In an example embodiment, holes 520 may be formed around the light-transmitting portion AG at predetermined intervals. In this case, holes 520 may be implemented as a plurality of holes, and cathode 515 may be deposited on at least a portion of each of the plurality of holes.

[0100] A hole 520 may be formed in at least a portion of a planarization layer (or insulating layer), such as a first planarization layer 511. The depth and width of the hole 520 may be predetermined. Specifically, the depth of the hole 520 may be greater than the width of the hole. For example, the depth of the hole 520 may be greater than twice the width of the hole. In this case, the hole 520 may have a narrow and deep shape, for example, when the first planarization layer 511 is pierced with a pin (needle). According to an example embodiment, the hole 520 may be referred to as a pin hole.

[0101] In an example implementation, after forming the aperture 520 and the pixel defining layer 513, a cathode 515 may be deposited. The cathode 515 may be formed on the pixel defining layer 513 and at least a portion of the aperture.

[0102] The second planarization layer 512 may be disposed below the first planarization layer 511. However, this disclosure is not limited thereto, and the second planarization layer 512 may be omitted or may be integrally formed with the first planarization layer 511. The first planarization layer 511 may correspond to Figure 4 The second planarization layer PLN2, and the second planarization layer 512 can correspond to Figure 4 The first planarization layer PLN1.

[0103] In an example embodiment, the metal layer BSM 517 can be disposed below the plane on which the hole 520 is provided, for example, below the second planarization layer 512. The metal layer 517 can extend to the end corresponding to the hole 520 or extend longer than the end of the hole 520. For example, one end of the metal layer 517 facing the opening 510 can be positioned closer to the opening 510 than the end of the hole 520 facing the opening 510. In this case, the lower region of the hole 520 can be covered by the metal layer 517.

[0104] In the example embodiment, although not shown for ease of description, various configurations may be additionally provided between the second planarization layer 512 and the metal layer 517. For example, an insulating layer or a TFT may be provided between the second planarization layer 512 and the metal layer 517. Since reference has already been made... Figure 4 Examples related to this have been described, and therefore detailed descriptions are omitted for brevity. Additionally, the configuration between the planarization layer and the metal layer, as described later in this disclosure, may be omitted.

[0105] In the example embodiment, at least a portion of the emitter layer EL can be disposed in the aperture 520. In this case, the cathode 515 can be disposed on the emitter layer. The area of ​​the aperture where the emitter layer EL is disposed and the area of ​​the aperture where the cathode 515 is disposed can correspond to each other. An example of this will be shown later. Figure 9A To be provided. In some cases, the area of ​​the aperture where the emitter layer EL is disposed and the area of ​​the aperture where the cathode 515 is disposed may be different. An example will be provided later. Figure 9B supply.

[0106] Figure 5 An example of a configuration in which the second planarization layer 512 is disposed below the first planarization layer 511 is briefly shown; however, embodiments of the present disclosure are not limited thereto.

[0107] In an example embodiment, the cathode 515 can be deposited on the hole by laser patterning. The cathode 515 formed by laser patterning can be formed to be as thin as a predetermined thickness. After the cathode 515 is disposed in the hole, an inorganic insulating layer PAS1 can be disposed on the cathode 515. In this case, since the inorganic insulating layer PAS1 is disposed in the hole, the cathode 515 can be stably disposed without any bulging at one end.

[0108] Figure 6 and Figure 7 This is a diagram illustrating examples and arrangements of holes in a display device according to an exemplary embodiment of this disclosure. Specifically, Figure 6 and Figure 7 An example of a plane in which a hole is provided along the boundary of the light-transmitting part (or opening) is conceptually shown.

[0109] In the example implementation, Figure 6 A plane may be shown that represents at least a portion of the sensing area SA. Multiple pixel groups (e.g., including a first pixel group 620) comprising at least one pixel (e.g., a first pixel 617 and a second pixel 619) may be disposed around the light-transmitting portion 610. In this case, the light-transmitting portion 610 may be disposed between at least two pixel groups.

[0110] In an example implementation, each of the at least two pixel groups may include a pixel corresponding to at least one of red, green, blue, and white. For example, each of the at least two pixel groups may include a first pixel corresponding to red, a second pixel corresponding to green, and a third pixel corresponding to blue. As another example, each of the at least two pixel groups may include a first pixel corresponding to red, a second pixel corresponding to green, a third pixel corresponding to blue, and a fourth pixel corresponding to white.

[0111] The light-transmitting portion 610 can transmit light. The light-transmitting portion 610 can be formed in a circular shape. Therefore, the boundary of the light-transmitting portion 610 can correspond to a circular shape. An aperture is formed along the boundary of the light-transmitting portion 610, and a cathode 615 can be disposed in at least a portion of the aperture.

[0112] In the example embodiment, the surface of the light-transmitting portion 610 can be implemented in various shapes. For example, the surface of the light-transmitting portion 610 can have a circular shape or a polygonal shape. In this case, the hole can be formed along the boundary of the light-transmitting portion 610 to correspond to the shape of the surface of the light-transmitting portion 610.

[0113] In an example embodiment, the cathode 615 may be formed while omitting at least a portion of the area corresponding to the boundary of the light-transmitting portion 610. For example, the cathode 615 may be formed in a region corresponding to a portion (e.g., 1 / 2) of the periphery of the light-transmitting portion 610.

[0114] In an example implementation, the first pixel group 620 is disposed on a first layer, and in this case, a hole can be disposed in the first layer, wherein the first layer may include a planarization layer. For example, the first pixel group 620 may be disposed on a planarization layer, and a hole may be disposed in the planarization layer by removing at least a portion of the planarization layer.

[0115] In the example embodiment, although not shown, the cathode 615 may be included in at least one pixel (e.g., the first pixel 617) of at least two pixel groups disposed around the light-transmitting portion. In this case, the cathode 615 may extend from the first pixel 617 to the upper end of the aperture and be formed at the boundary of the light-transmitting portion.

[0116] In an example implementation, a planarization layer (or insulating layer) may be disposed on the driving circuitry of at least two pixel groups disposed around the light-transmitting portion. For example, the planarization layer may be disposed on the driving circuitry of the first pixel group 620.

[0117] In the example embodiment, the thickness of the first point of the cathode 615 disposed on the hole may be less than the thickness of the second point of the cathode 615. In this case, the first point may be a point closer to the light-transmitting portion than the second point. That is, the cathode 615 may be formed in a shape that becomes thinner as it approaches the light-transmitting portion.

[0118] Figure 7 The formation ratio is shown Figure 6 An example of the width of a hole. In the following text, in conjunction with... Figure 7 For brevity, the terms "and" can be omitted in the relevant descriptions. Figure 6 Description of overlapping content.

[0119] Reference Figure 7 The width of the hole can be made to be greater than... Figure 6 The hole is wide, and therefore the area of ​​the cathode 715 disposed on the hole can be formed to be larger.

[0120] In the example implementation, multiple holes can be formed along the boundary of the light-transmitting portion. For example, the holes can be implemented to include multiple sub-holes. In the case where multiple spaces are separated by pillars included in the holes, the sub-holes can refer to each of the separated spaces.

[0121] In this case, the width of each sub-hole can correspond to Figure 6The width of the aperture. A cathode can be disposed on multiple sub-apertures, and therefore the area of ​​the cathode disposed on the aperture can be formed to be greater than [the width of the aperture]. Figure 6 The area of ​​the cathode. Some details in the sub-hole will be referenced later. Figure 8A , Figure 8B and Figure 8C describe.

[0122] In another embodiment, a hole can be formed such that the width of its bottom surface is greater than that of the hole. Figure 6 The width of the bottom surface of the hole is [width]. The width can be a predefined value.

[0123] Figure 8A , Figure 8B and Figure 8C This is a diagram illustrating an example of a hole in a display device according to an exemplary embodiment of the present disclosure. Specifically, Figure 8A , Figure 8B and Figure 8C Example embodiments in which the aperture of the display device is configured in various ways are illustrated conceptually. (Refer to...) Figure 8A , Figure 8B and Figure 8C The hole can be configured to be adjacent to sensor 801.

[0124] Figure 8A An example of a display device including a hole is shown. Figure 8A An example of a cross-section of a hole is conceptually shown. As illustrated, the hole can be formed into a shape that is deeply drilled into at least a portion of the planarization layer PLN.

[0125] A cathode 815 can be formed to cover at least a portion of the upper surface of the hole. Figure 8A An example is shown in which the cathode 815 completely covers the upper surface of the aperture, but this disclosure is not limited thereto. If the cathode 815 covers only a portion of the upper surface of the aperture, the thickness of the cathode 815 may decrease as it approaches the light-transmitting portion AG.

[0126] Figure 8A , Figure 8B and Figure 8C An example of a display device having holes including multiple sub-holes is shown.

[0127] like Figure 8B As shown, the device may include posts that separate each of the plurality of sub-holes, such as a first post 821 and a second post 822. The heights of the first post 821 and the second post 822 may be the same as shown, but this disclosure is not limited thereto, and they may be different from each other.

[0128] Figure 8C Another example implementation is shown, in which the post separating each of the plurality of sub-holes is implemented as... Figure 8BThe diagram shows different shapes of pillars. Specifically, the height of the pillar separating each of the multiple sub-holes can be predetermined as a first height. The first height can be less than the depth of the hole. In this case, the depth h1 of the hole can correspond to the distance from the upper surface of the planarization layer PLN to the bottom surface of the hole, and the height h2 of the pillar can correspond to the distance from the upper surface of the pillar to the bottom surface of the hole.

[0129] In an example implementation, the depth of the planarization layer PLN can be 2.3 μm, and the depth h1 of the aperture can correspond to 2.0 μm. The upper width of the aperture can correspond to 1 μm, and the lower width of the aperture can correspond to 0.5 μm. However, this is only an example, and this implementation is not limited to these examples.

[0130] Figure 9A and Figure 9B This is a diagram illustrating an example of a cathode disposed in a hole of a display device according to an exemplary embodiment of the present disclosure. Specifically, Figure 9A and Figure 9B An example cross-section of a region in which an emission layer and a cathode are disposed on an aperture is conceptually shown. For example, an emission layer associated with at least one pixel is disposed in at least a portion of the aperture. For example, the emission layer is disposed between the upper surface of the aperture and the cathode disposed in at least a portion of the aperture. (See reference...) Figure 9A and Figure 9B The hole can be configured to be adjacent to sensor 901.

[0131] Figure 9A The illustration shows that the emitting layer 903 and the cathode 905 can be disposed on at least a portion of the upper surface of the aperture. As shown in this example embodiment, on one side of the light-transmitting portion AG, the emitting layer 903 and the cathode 905 can be disposed on the entire upper surface of the aperture, while on the other side, the emitting layer 903 and the cathode 905 can be disposed on a portion of the upper surface of the aperture.

[0132] In the example embodiment, the thickness of the emitting layer 903 and the cathode 905 may become thinner as they approach the light-transmitting portion AG, but this disclosure is not limited thereto. The emitting layer 903 may be associated with at least one pixel.

[0133] As shown, a cathode 905 and an emitter layer 903 are disposed on the upper surface of the aperture, and in this case, the cathode 905 may be disposed on the emitter layer 903. However, this disclosure is not limited thereto, and for example, only the cathode 905 may be disposed without the emitter layer 903.

[0134] like Figure 9BAs shown, the regions on the aperture where the emitting layer 903 and the cathode 905 are disposed can be distinguished from each other. For example, the emitting layer 903 can be disposed in a first region on the upper surface of the aperture, and the cathode 905 can be disposed in a second region on the upper surface of the aperture, the second region being a wider region including the first region. As another example, the emitting layer 903 can be disposed on the first region on the upper surface of the aperture, and the cathode 905 can be disposed in a second region on the upper surface of the aperture that is narrower than the first region.

[0135] In the display device according to the exemplary embodiment of this disclosure, the aperture can be configured to correspond to the boundary of the light-transmitting portion of the sensing area, and a cathode is disposed on the aperture. Therefore, the absence of a cathode in the light-transmitting portion minimizes the residual film on the cathode and minimizes the occurrence of a bulge where one end of the cathode curls up.

[0136] A display panel according to an example embodiment of this disclosure may include: a first region having a plurality of pixels; and a second region including at least two groups of pixels. Each of the at least two groups of pixels may include: at least one pixel; a light-transmitting portion disposed between the at least two groups of pixels to transmit light; and an aperture formed as a boundary corresponding to the light-transmitting portion. A cathode associated with the at least one pixel may be disposed in at least a portion of the aperture.

[0137] In the example implementation, the thickness of the first point of the cathode can be less than the thickness of the second point of the cathode, and the first point can be closer to the light-transmitting part than the second point.

[0138] In the example embodiment, the arrangement of the cathode in the light-transmitting section can be omitted. The cathode may have an opening formed in the light-transmitting section and may be disposed in an area other than the light-transmitting section.

[0139] In the example implementation, at least two pixel groups can be set on the first layer.

[0140] An aperture is formed in the first layer by removing at least a portion of the first layer, and a cathode may be disposed in a first pixel of at least one pixel included in at least two pixel groups, and may extend from the first pixel to the upper end of the aperture. The first layer may include a planarization layer disposed on the driving circuitry of the at least two pixel groups.

[0141] In an example implementation, the aperture may include multiple sub-apertures. The multiple sub-apertures may be separated by at least one post having a first height. The first height may be less than the depth of the aperture. An emission layer associated with at least one pixel may be disposed in at least a portion of the aperture. The emission layer may be disposed between the upper surface of the aperture and a cathode disposed in at least a portion of the aperture.

[0142] In the example implementation, the surface of the light-transmitting portion may have a circular or polygonal shape.

[0143] In an example implementation, each of the at least two pixel groups may include a pixel corresponding to at least one of red, green, blue, and white. The pixel density of the second region may be lower than that of the first region.

[0144] A display device according to an exemplary embodiment of the present disclosure may include a display panel comprising: a first region having a plurality of pixels; and a second region comprising at least two groups of pixels. Each of the at least two groups of pixels may include: at least one pixel; a light-transmitting portion disposed between the at least two groups of pixels to transmit light; and an aperture formed as a boundary corresponding to the light-transmitting portion. A cathode associated with the at least one pixel may be disposed in at least a portion of the aperture.

[0145] In the example implementation, the thickness of the first point of the cathode can be less than the thickness of the second point of the cathode, and the first point can be closer to the light-transmitting part than the second point.

[0146] In the example implementation, the arrangement of the cathode can be omitted in the light-transmitting section.

[0147] In an example implementation, at least two pixel groups may be disposed on the first layer, and a hole may be formed in the first layer by removing at least a portion of the first layer. A cathode may be disposed in a first pixel of at least one of the pixels included in the at least two pixel groups, and may extend from the first pixel to the upper end of the hole. The first layer may include a planarization layer disposed on the driving circuitry of the at least two pixel groups.

[0148] In an example implementation, the display device may further include an optical sensor disposed on one side of the display panel to correspond to the second area.

[0149] In an example implementation, the optical sensor may include at least one of a camera device and an infrared sensor.

[0150] Exemplary embodiments of this disclosure can also be described as follows.

[0151] Note 1. A display panel, comprising:

[0152] A first region, wherein multiple pixels are defined in the first region; and

[0153] The second region comprises at least two groups of pixels.

[0154] Each of the at least two pixel groups includes:

[0155] At least one pixel;

[0156] A light-transmitting portion disposed between the at least two pixel groups to transmit light; and

[0157] An aperture is formed to correspond to the boundary of the light-transmitting portion, and a cathode associated with the at least one pixel is disposed in at least a portion of the aperture.

[0158] Appendix 2. The display panel according to Appendix 1, wherein the thickness of the first point of the cathode is less than the thickness of the second point of the cathode, and

[0159] The first point is closer to the light-transmitting part than the second point.

[0160] Note 3. The display panel according to Note 1, wherein the arrangement of the cathode is omitted in the light-transmitting portion.

[0161] Appendix 4. The display panel according to Appendix 1, wherein the at least two pixel groups are disposed on the first layer.

[0162] The holes are formed in the first layer by removing at least a portion of the first layer.

[0163] The cathode is disposed in a first pixel of at least one pixel included in the at least two pixel groups, and the cathode extends from the first pixel to the upper end of the hole.

[0164] Note 5. The display panel according to Note 4, wherein the first layer includes a planarization layer disposed on the driving circuitry of the at least two pixel groups.

[0165] Note 6. The display panel according to Note 1, wherein the hole includes a plurality of sub-holes.

[0166] Note 7. The display panel according to Note 6, wherein the plurality of sub-holes are separated by at least one post having a first height.

[0167] Note 8. The display panel according to Note 7, wherein the first height is less than the depth of the hole.

[0168] Note 9. The display panel according to Note 1, wherein an emission layer associated with the at least one pixel is disposed in at least a portion of the hole.

[0169] Note 10. The display panel according to Note 9, wherein the emitting layer is disposed between the upper surface of the aperture and the cathode disposed in at least a portion of the aperture.

[0170] Note 11. The display panel according to Note 1, wherein the surface of the light-transmitting portion has a circular or polygonal shape.

[0171] Note 12. The display panel according to Note 1, wherein each of the at least two pixel groups includes a pixel corresponding to at least one of red, green, blue and white.

[0172] Note 13. The display panel according to Note 12, wherein the pixel density of the second region is lower than the pixel density of the first region.

[0173] Appendix 14. A display device, comprising:

[0174] The display panel includes:

[0175] A first region having multiple pixels; and

[0176] The second region comprises at least two groups of pixels.

[0177] Each of the at least two pixel groups includes:

[0178] At least one pixel;

[0179] A light-transmitting portion disposed between the at least two pixel groups to transmit light; and

[0180] An aperture is formed to correspond to the boundary of the light-transmitting portion, and wherein a cathode associated with the at least one pixel is disposed in at least a portion of the aperture.

[0181] Appendix 15. The display device according to Appendix 14, wherein the thickness of the first point of the cathode is less than the thickness of the second point of the cathode, and

[0182] The first point is closer to the light-transmitting part than the second point.

[0183] Note 16. The display device according to Note 14, wherein the arrangement of the cathode is omitted in the light-transmitting portion.

[0184] Note 17. The display device according to Note 14, wherein the at least two pixel groups are disposed on the first layer.

[0185] The holes are formed in the first layer by removing at least a portion of the first layer.

[0186] The cathode is disposed in a first pixel of at least one pixel included in the at least two pixel groups, and the cathode extends from the first pixel to the upper end of the hole.

[0187] Note 18. The display device according to Note 17, wherein the first layer includes a planarization layer disposed on the driving circuitry of the at least two pixel groups.

[0188] Note 19. The display device according to Note 14, wherein the display device further comprises: an optical sensor disposed on one side of the display panel to correspond to the second region.

[0189] Note 20. The display device according to Note 19, wherein the optical sensor includes at least one of a camera device and an infrared sensor.

[0190] Although embodiments of the present disclosure have been described in detail with reference to the accompanying drawings, the invention is not necessarily limited to these embodiments, and various modifications can be made within this scope. Therefore, the embodiments disclosed in this disclosure are not intended to limit the scope of the invention, but are illustrative by way of example, and the scope of the invention is not limited by these embodiments. Therefore, it should be understood that the above embodiments are illustrative in all respects and not restrictive. The scope of protection of the invention should be interpreted by the appended claims, and all technical features within the scope of the claims should be interpreted as being included within the scope of the invention.

Claims

1. A display panel, comprising: substrate; Thin-film transistors disposed on the substrate; A first planarization layer is disposed on the thin-film transistor; as well as A second planarization layer is disposed on the first planarization layer. The substrate includes: A first region, wherein multiple pixels are defined in the first region; and The second region comprises at least two groups of pixels. Each of the at least two pixel groups includes: At least one pixel, the at least one pixel comprising an anode, an emissive layer, and a cathode; A light-transmitting portion disposed between the at least two pixel groups to transmit light; and A hole, the hole being formed as a boundary corresponding to the light-transmitting portion, Wherein, the holes are formed in the second planarization layer by removing at least a portion of the second planarization layer, and The cathode is disposed in a first pixel of at least one pixel included in the at least two pixel groups, and the cathode extends from the first pixel to the upper end of the hole.

2. The display panel of claim 1, wherein, The thickness of the first point of the cathode is less than the thickness of the second point of the cathode, and The first point is closer to the light-transmitting part than the second point.

3. The display panel of claim 1, wherein, The arrangement of the cathode is omitted in the light-transmitting section.

4. The display panel of claim 1, wherein, The hole includes multiple sub-holes.

5. The display panel of claim 4, wherein, The plurality of sub-holes are separated by at least one post having a first height.

6. The display panel according to claim 5, wherein, The first height is less than the depth of the hole.

7. The display panel according to claim 1, wherein, An emission layer associated with the at least one pixel is provided in at least a portion of the hole.

8. The display panel according to claim 7, wherein, The emission layer is disposed between the upper surface of the aperture and the cathode disposed in at least a portion of the aperture.

9. The display panel according to claim 1, wherein, The surface of the light-transmitting part has a circular or polygonal shape.

10. The display panel according to claim 1, wherein, Each of the at least two pixel groups includes a pixel corresponding to at least one of red, green, blue, and white.

11. The display panel according to claim 10, wherein, The pixel density of the second region is lower than that of the first region.

12. A display device, comprising: The display panel includes: substrate; Thin-film transistors disposed on the substrate; A first planarization layer disposed on the thin-film transistor; and A second planarization layer is disposed on the first planarization layer. The substrate includes: A first region having multiple pixels; and The second region comprises at least two groups of pixels. Each of the at least two pixel groups includes: At least one pixel, the at least one pixel comprising an anode, an emissive layer, and a cathode; A light-transmitting portion disposed between the at least two pixel groups to transmit light; and A hole, the hole being formed as a boundary corresponding to the light-transmitting portion, Wherein, the holes are formed in the second planarization layer by removing at least a portion of the second planarization layer, and The cathode is disposed in a first pixel of at least one pixel included in the at least two pixel groups, and the cathode extends from the first pixel to the upper end of the hole.

13. The display device according to claim 12, wherein, The thickness of the first point of the cathode is less than the thickness of the second point of the cathode, and The first point is closer to the light-transmitting part than the second point.

14. The display device according to claim 12, wherein, The arrangement of the cathode is omitted in the light-transmitting section.

15. The display device according to claim 12, wherein, The display device further includes an optical sensor disposed on one side of the display panel to correspond to the second area.

16. The display device according to claim 15, wherein, The optical sensor includes at least one of a camera device and an infrared sensor.

Images