Display device

Abstract

A display device according to an embodiment of the present invention includes: a display panel, the display panel including a display area, a light-transmitting area, and a boundary area surrounding the light-transmitting area; and a sensor, wherein the display panel includes: a substrate; a circuit layer disposed on the substrate; a light-emitting element layer disposed on the circuit layer; an encapsulation layer disposed on the light-emitting element layer; a touch sensor layer disposed on the encapsulation layer; and an adhesive layer disposed on the touch sensor layer, wherein at least one of a plurality of wirings disposed in the boundary area has a first hole overlapping the sensor.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to Korean Patent Application No. 10-2024-0199665, filed on December 30, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The embodiments relate to a display panel and a display device including the display panel. Background Technology

[0004] Based on the material of the light-emitting layer, electroluminescent display devices can be divided into inorganic light-emitting display devices and organic light-emitting display devices. Active-matrix organic light-emitting display devices include self-emissive organic light-emitting diodes (OLEDs) and have advantages in high response rate, high luminous efficiency, high brightness, and wide viewing angle. In organic light-emitting display devices, an OLED is formed for each pixel. Organic light-emitting display devices feature high response rate, high luminous efficiency, high brightness, and wide viewing angle, and can represent black grayscale with perfect or near-perfect black, thereby achieving high contrast and high color reproduction rate.

[0005] In order to increase the size of the screen for realizing images, the display device prepares an optical area with low-resolution pixels within the screen of the display panel, and sets electronic components such as cameras and various sensors in corresponding positions below the optical area.

[0006] Resolution irregularities can occur due to low-resolution pixels in the optical region, thus requiring a display device with an improved structure to prevent or minimize resolution irregularities. Summary of the Invention

[0007] The present invention relates to a display panel that structurally improves resolution irregularities caused by low-resolution pixels and a display device including the display panel.

[0008] Embodiments of the present invention relate to a display panel that uses holes formed in wiring around a light-transmitting area to allow light to reach a sensor, and a display device including the display panel.

[0009] The objectives to be achieved by the implementation methods are not limited to those described above, and those skilled in the art will clearly understand from the following description that objectives not described above will not be found.

[0010] A display device according to one embodiment includes: a display panel, the display panel including a display area, a light-transmitting area, and a boundary area surrounding the light-transmitting area; and a sensor, wherein the display panel may include: a substrate; a circuit layer disposed on the substrate; a light-emitting element layer disposed on the circuit layer; an encapsulation layer disposed on the light-emitting element layer; a touch sensor layer disposed on the encapsulation layer; and an adhesive layer disposed on the touch sensor layer, wherein at least one of a plurality of wirings disposed in the boundary area may have a first hole overlapping the sensor.

[0011] A display device according to another embodiment includes: a display panel, the display panel including a display area, a light-transmitting area, and a boundary area surrounding the light-transmitting area; and a sensor, wherein the display panel includes: a substrate; a circuit layer disposed on the substrate; a light-emitting element layer disposed on the circuit layer; an encapsulation layer disposed on the light-emitting element layer; a touch sensor layer disposed on the encapsulation layer; and an adhesive layer disposed on the touch sensor layer, the adhesive layer including a main portion and a lens portion formed to protrude from the lower portion of the main portion, at least one of a plurality of wirings disposed in the boundary area having a first hole overlapping the sensor, and the sensor overlapping the lens portion and the first hole.

[0012] According to embodiments of the present invention, resolution irregularities caused by low-resolution pixels of the display panel can be structurally improved.

[0013] According to an embodiment of the present invention, by using holes formed in the wiring around the light-transmitting area to allow light to reach the sensor, areas on the display panel corresponding to low-resolution pixels set for the sensor can be excluded. Therefore, according to an embodiment of the present invention, since resolution irregularities caused by low-resolution pixels can be structurally improved, the brightness of the display panel can be increased. As a result, low-power driving of the display device can be achieved by increasing the brightness of the display panel.

[0014] According to embodiments of the present invention, since the infrared sensor located between two cameras can be configured to overlap with a hole formed in the wiring, the design freedom of the space around the sensor can be increased. For example, according to embodiments of the present invention, unlike display panels that include infrared sensors positioned away from the cameras, since the infrared sensor is positioned between two cameras, the space away from the cameras can be utilized. As a result, the design freedom of the display device can be increased.

[0015] The various advantages and effects of the embodiments are not limited to those described above, and will be more readily understood from the description of the specific embodiments. Attached Figure Description

[0016] The above and other objects, features, and advantages of this disclosure will become more apparent to those skilled in the art from the detailed description of exemplary embodiments thereof with reference to the accompanying drawings, wherein:

[0017] Figure 1 This is a view of a display device according to an embodiment of the present invention;

[0018] Figure 2 This is a view illustrating the display area and the light-transmitting area of ​​a display panel according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic cross-sectional view illustrating a display panel according to an embodiment of the present invention;

[0020] Figure 4 It is a cross-sectional view illustrating the cross-sectional structure of a pixel region disposed in the display area of ​​a display panel according to an embodiment of the present invention;

[0021] Figure 5 It is a diagram Figure 2 Enlarged view of region A in the image;

[0022] Figure 6 It is a diagram Figure 5 Enlarged view of region Aa in the image;

[0023] Figure 7 It is a diagram along Figure 2 The cross-sectional view taken by line I-I' from the substrate of the display panel to the touch sensor layer;

[0024] Figure 8 It is a diagram along Figure 2 The cross-sectional view of the adhesive layer and functional layer set on the touch sensor layer of the display panel, taken by line I-I';

[0025] Figure 9 It is a diagram along Figure 2 The view of the display panel according to another embodiment of the present invention is taken by line I-I'.

[0026] Figure 10 It is a diagram along Figure 2 The image shows a cross-sectional view of the adhesive layer and functional layer disposed on the touch sensor layer of the display panel according to another embodiment of the present invention, taken by line I-I'.

[0027] Figure 11 This is a view illustrating a lens portion separately disposed in a display panel according to another embodiment of the present invention;

[0028] Figure 12It is a cross-sectional view illustrating the cross-sectional structure of a pixel region disposed in the display area of ​​a display panel according to another embodiment of the present invention;

[0029] Figure 13 It is a diagram along Figure 2 The view of the display panel according to another embodiment of the present invention is taken by line I-I'.

[0030] Figure 14 It is a diagram along Figure 2 The image shows a cross-sectional view of the adhesive layer and functional layer disposed on the black matrix of the display panel according to another embodiment of the present invention, taken by line I-I'.

[0031] Figure 15 It is a cross-sectional view illustrating the cross-sectional structure of a pixel region disposed in the display area of ​​a display panel according to another embodiment of the present invention;

[0032] Figure 16 It is a diagram along Figure 2 The view of the display panel according to another embodiment of the present invention is taken by line I-I'.

[0033] Figure 17 It is a diagram along Figure 2 The image shows a cross-sectional view of the adhesive layer and functional layer disposed on the first insulating layer of a display panel according to another embodiment of the present invention, taken by line I-I'. Detailed Implementation

[0034] The advantages and features of this disclosure, as well as methods of implementing them, will become clearer from the embodiments described below with reference to the accompanying drawings. However, this disclosure is not limited to the following embodiments, but can be implemented in various different forms. Rather, the embodiments will make the disclosure of the invention complete and enable those skilled in the art to fully understand the scope of this disclosure. This disclosure is limited only by the scope of the appended claims.

[0035] The shapes, dimensions, ratios, angles, quantities, etc., disclosed in the accompanying drawings for describing embodiments of this disclosure are exemplary, and this disclosure is not limited to the items shown. The same reference numerals always refer to the same elements. Furthermore, in describing this disclosure, detailed descriptions of related known technologies will be omitted if it is determined that such detailed descriptions would unnecessarily obscure the subject matter of this disclosure.

[0036] Terms such as “comprising,” “including,” “having,” and “consisting of” as used herein are generally intended to allow for the addition of additional components, unless these terms are used in conjunction with the term “only.” Unless otherwise expressly stated, reference to the singular should be interpreted to include the plural.

[0037] When interpreting a component, it is interpreted as including the error range, even if there is no separate description.

[0038] When describing positional relationships, for example, when the positional relationship between two parts is described as "on," "above," "below," "next to," etc., one or more other parts can be placed between the two parts, unless "immediately" or "directly" is used.

[0039] In the description of the embodiments, terms such as "first," "second," etc., are used to describe various components, but these components are not limited by these terms. These terms are only used to distinguish one component from another. Therefore, within the technical spirit of this disclosure, the "first component" mentioned below can be the "second component."

[0040] Throughout the specification, the same reference numerals denote the same parts.

[0041] Features of each of the various implementations can be combined or combined with each other in whole or in part, and various technologies can be interconnected and driven, and each implementation can be implemented independently of each other or in combination with each other.

[0042] In recent years, the importance of display devices as a medium for transmitting visual information has been further enhanced in information-oriented societies, and display devices are being improved to meet requirements such as low power consumption, reduced thickness, reduced weight, high definition, and high efficiency.

[0043] In a display device according to an embodiment of the present invention, a hole can be formed in a wiring that bypasses the light-transmitting area, and a sensor can be disposed overlapping the hole. For example, an infrared sensor can be disposed overlapping the hole. In this case, light can reach the sensor through the hole. Therefore, in a display device according to an embodiment of the present invention, since a region corresponding to the infrared sensor can be excluded from the display panel, resolution irregularities caused by low-resolution pixels can be prevented.

[0044] A display device according to an embodiment of the present invention may include two light-transmitting regions spaced apart by a predetermined interval. Holes can then be formed in wiring that bypasses the light-transmitting regions. Therefore, a display device according to an embodiment of the present invention may include a sensor disposed separately from a sensor corresponding to a light-transmitting region between the light-transmitting regions. For example, since the display device according to an embodiment of the present invention includes an infrared sensor disposed between two cameras, the space originally allocated to the infrared sensor spaced apart from the cameras can be utilized. Therefore, the design freedom of the display device according to an embodiment of the present invention can be increased.

[0045] Figure 1 This is a view of a display device according to an embodiment of the present invention. Figure 2This is a view illustrating the display area and the light-transmitting area of ​​a display panel according to an embodiment of the present invention. Figure 3 This is a schematic cross-sectional view illustrating a display panel according to an embodiment of the present invention. Figure 2 In the attached drawing, reference numeral C can indicate the center of the light-transmitting area TA. In this case, the display panel 100 may include two light-transmitting areas TA, reference numeral C1 can indicate the center of the first light-transmitting area TA1, and reference numeral C2 can indicate the center of the second light-transmitting area TA2.

[0046] Reference Figures 1 to 3 The display device according to an embodiment of the present invention may include a display panel 100 for visually reproducing an input image and a sensor 200. Here, the sensor 200 may include at least one of an image sensor, a proximity sensor, an illuminance sensor, a gesture sensor, a motion sensor, a fingerprint recognition sensor, and a biometric sensor. The sensor 200 may be a sensor module including multiple sensors.

[0047] The display panel 100 may include a display area DA for displaying information, images, and / or pictures, and a non-display area NDA surrounding the display area DA. The display panel 100 may include a light-transmitting area TA disposed within the display area DA. The display panel 100 may include a boundary area BA disposed between the display area DA and the light-transmitting area TA.

[0048] The display area DA can be an area for displaying an image. The display area DA can include multiple pixels P. Each of the multiple pixels P can be configured with multiple sub-pixels. Each of the multiple sub-pixels can be provided with a light-emitting element. The light-emitting element can be configured differently depending on the type of display device. For example, when the display device is an inorganic light-emitting display device, the light-emitting element can be a light-emitting diode (LED), a micro light-emitting diode (micro LED), or a mini light-emitting diode (mini LED), but this application is not limited to these. For example, when the display device is an organic light-emitting display device, the light-emitting element can be an organic light-emitting diode (OLED).

[0049] The light-transmitting area TA can be the area where light enters and can be located within the display area DA. Here, the light-transmitting area TA can have a hole structure for allowing light to enter the sensor 200 located below the display panel 100. Although a circular shape of the light-transmitting area TA is shown here, the embodiments of this application are not limited to this. For example, the light-transmitting area TA can be designed in various shapes, such as quadrilateral, elliptical, or polygonal shapes.

[0050] The light-transmitting area TA can be an area corresponding to some of the multiple sensors 200. The light-transmitting area TA can be an area that overlaps with various sensors, and its size can be relatively smaller than the display area DA that outputs most of the image.

[0051] Two light-transmitting areas TA can be spaced apart from each other at a predetermined interval. Therefore, a portion of the display area DA can be disposed between the two light-transmitting areas TA. For example, the light-transmitting areas TA may include a first light-transmitting area TA1 and a second light-transmitting area TA2 spaced apart from each other. A portion of the display area DA can be disposed between the first light-transmitting area TA1 and the second light-transmitting area TA2.

[0052] Sensor 200 may be configured to correspond to a first light-transmitting region TA1 and a second light-transmitting region TA2. Furthermore, sensor 200 may be configured to overlap with a portion of the display area DA located between the first light-transmitting region TA1 and the second light-transmitting region TA2 in the Z-axis direction, but embodiments of this application are not limited to this. For example, sensor 200 may be configured to overlap with the boundary region BA located between the first light-transmitting region TA1 and the second light-transmitting region TA2 in the Z-axis direction. Here, sensor 200 may include a first sensor 210, a second sensor 220, a third sensor 230, and a fourth sensor 240. The first sensor 210 may correspond to the first light-transmitting region TA1. The third sensor 230 and the fourth sensor 240 may correspond to the second light-transmitting region TA2. The second sensor 220 may correspond to the boundary region BA. In this case, each of the first sensor 210, the third sensor 230, and the fourth sensor 240 may be a camera (or an image sensor), but is not limited to this. The second sensor 220 may be an infrared sensor, but is not limited to this.

[0053] The boundary region BA can be set to surround the light-transmitting region TA. In this case, unlike the display region DA, the boundary region BA can be an area where no image is displayed.

[0054] A boundary area (BA) can include multiple wirings. For example, multiple touch wirings can be set in a boundary area (BA).

[0055] The boundary area BA may include moisture penetration prevention structures, such as multiple dams. Here, the moisture penetration prevention structure can protect the light-emitting elements of the display area DA from moisture, oxygen, etc., that may be introduced from the light-transmitting area TA.

[0056] The non-display area NDA can be an area where no image is displayed. To drive multiple pixels P of the display area DA, various wirings, circuits, etc., can be arranged in the non-display area NDA. For example, various wirings and driving circuits can be installed in the non-display area NDA, and pads for connection to integrated circuits, printed circuits, etc., can be arranged in the non-display area NDA; however, the embodiments of this application are not limited to these.

[0057] The driving circuit may be a data driver circuit and / or a gate driver circuit, but embodiments of this application are not limited thereto. Wiring configured to transmit control signals for controlling the driver circuit may be arranged in the display panel 100. For example, the control signals may include various timing signals, including clock signals, input data enable signals, and synchronization signals, but embodiments of this application are not limited thereto. In this case, the control signals may be received via pads.

[0058] According to this application, the non-display area NDA may include a curved region. Here, the curved region can be a bendable region. In this case, the remaining area of ​​the substrate 10, excluding the curved region, can be in a flat state. Furthermore, pads can be arranged on the non-display area NDA.

[0059] The display panel 100 may have a width in the X-axis direction, a length in the Y-axis direction, and a thickness in the Z-axis direction. Here, the width and length of the display panel 100 can be set to various design values ​​depending on the application of the display device. Furthermore, the X-axis direction may refer to the width direction or the horizontal direction, the Y-axis direction may refer to the length direction or the vertical direction, and the Z-axis direction may refer to the vertical direction, the stacking direction, or the thickness direction. Here, the X-axis, Y-axis, and Z-axis directions may be perpendicular to each other, or they may refer to different directions that are not perpendicular to each other. The X-axis, Y-axis, and Z-axis directions can be described as a first direction, a second direction, and a third direction, respectively. Moreover, the planes extending in the X-axis and Y-axis directions may refer to horizontal planes.

[0060] The display panel 100 may include a circuit layer 12 disposed on the substrate 10, a light-emitting element layer 14 disposed on the circuit layer 12, an encapsulation layer 16 disposed on the light-emitting element layer 14, and a touch sensor layer 18 disposed on the encapsulation layer 16. In addition, the display panel 100 may include a functional layer 30 disposed on the touch sensor layer 18 via an adhesive layer 20.

[0061] The substrate 10 may be formed of an insulating material or a flexible material. For example, the substrate 10 may be made of glass, metal or plastic, but is not limited thereto.

[0062] The substrate 10 may include a display area DA and a non-display area NDA. The display area DA and the non-display area NDA are not limited to being described only for the substrate 10, but can be described for the entire display device.

[0063] The circuit layer 12 may include pixel circuitry connected to wiring such as data lines, gate lines, and power lines, gate drivers connected to the gate lines, etc. Furthermore, the circuit layer 12 may include transistors implemented in thin-film transistors (TFTs) and circuit elements such as capacitors.

[0064] The light-emitting element layer 14 may include a light-emitting element driven by pixel circuitry. Here, the light-emitting element may be implemented using an organic light-emitting diode (OLED). The OLED may include, but is not limited to, an organic compound layer formed between an anode and a cathode. The organic compound layer includes, but is not limited to, a hole injection layer (HIL), a hole transport layer (HTL), a light-emitting layer (EML), an electron transport layer (ETL), and an electron injection layer (EIL).

[0065] The light-emitting element layer 14 can be covered by a protective film, which in turn can be covered by an encapsulation layer 16. Here, the protective film can have a structure in which organic and inorganic films are alternately stacked. In this case, the inorganic film can block the permeation of moisture or oxygen. Furthermore, the organic film can planarize the surface of the inorganic film. When the organic and inorganic films are stacked in multiple layers, the movement path of moisture or oxygen is longer than that of a single layer, making it possible to effectively block the permeation of moisture / oxygen affecting the light-emitting element layer 14.

[0066] The encapsulation layer 16 covers the light-emitting element layer 14 to seal the circuit layer 12 and the light-emitting element layer 14. Here, the encapsulation layer 16 may have a multi-insulating film structure in which organic films and inorganic films are stacked alternately.

[0067] The touch sensor layer 18 may include a capacitive touch sensor that senses touch input based on capacitance changes before and after the touch input. The touch sensor layer 18 may include a metal wiring pattern forming the capacitance of the touch sensor and an insulating film. The insulating film insulates the intersecting portions of the metal wiring pattern and planarizes the surface of the touch sensor layer.

[0068] The adhesive layer 20 can be an adhesive component. Therefore, the adhesive layer 20 attaches the functional layer 30 to the touch sensor layer 18.

[0069] The functional layer 30 can be a polarizer disposed on the touch sensor layer 18. The polarizer can improve visibility and contrast by converting the polarization of external light reflected by the metal pattern of the circuit layer 12. A cover glass (not shown) can be attached to the polarizer. Here, the polarizer can be referred to as a polarizing layer and can be disposed in the form of a polarizing film.

[0070] Functional layer 30 may be a color filter layer disposed on touch sensor layer 18. The color filter layer may include red, green, and blue color filters. The color filter layer may include a black matrix pattern. The color filter layer replaces a polarizer to absorb a portion of the wavelength of light reflected from circuit layer 12, thereby improving color purity. A cover glass (not shown) may be attached to the color filter layer.

[0071] The color filter layer may include an organic film covering the color filter and the black matrix pattern. The extended portion of the organic film may cover the remaining inorganic film or substrate 10 in the bezel area (i.e., the edge area of ​​the display panel 100).

[0072] The display device according to embodiments of the present disclosure may include: a display panel 100 having a pixel array arranged on a screen, a display panel driver, etc.

[0073] The pixel array of the display panel 100 may include a data line DL, a gate line GL that intersects the data line DL, and pixels P that are connected to the data line DL and the gate line GL and arranged in a matrix.

[0074] The pixel array can be divided into a circuit layer 12 and a light-emitting element layer 14, such as Figure 3 As shown. Then, a touch sensor array can be arranged on the light-emitting element layer 14. Here, each pixel of the pixel array can include two to four sub-pixels. Each sub-pixel can include pixel circuitry arranged in the circuit layer 12.

[0075] Each sub-pixel of the display area DA may include pixel circuitry. Pixel circuitry may include driving elements that supply current to the light-emitting element (OLED), multiple switching elements that sample the threshold voltage of the driving element and switch the current path of the pixel circuitry, capacitors that maintain the gate voltage of the driving element, etc.

[0076] The display panel driver can write pixel data of an input image to pixel P. A pixel can be interpreted as a group of pixels comprising multiple subpixels.

[0077] The display panel driver may include a data driver that provides data voltages to the data lines DL (providing pixel data) and a gate driver 120 that sequentially provides gate pulses to the gate lines GL. Furthermore, the data driver may be integrated into the driver IC 300. Additionally, the display panel driver may also include a touch sensor driver (not shown in the figure).

[0078] The driver IC 300 can be coupled to the display panel 100. The driver IC 300 receives pixel data and timing signals of the input image from the host system 400, provides the data voltage of the pixel data to the pixels, and synchronizes the data driver and the gate driver 120.

[0079] The driver IC 300 can be connected to the data line DL via the data output channel to provide the data voltage for pixel data to the data line DL. The driver IC 300 can also output gate timing signals for controlling the gate driver 120 via the gate timing signal output channel.

[0080] The gate driver 120 may include a shift register formed on a circuit layer of the display panel 100 together with the pixel array. The shift register of the gate driver 120 can sequentially provide gate signals to the gate lines GL under the control of a timing controller. The gate signals may include scan pulses and EM pulses of emission signals.

[0081] The host system 400 can be implemented by an application processor (AP). The host system 400 can transmit pixel data of the input image to the driver IC 300 via a Mobile Industrial Processor Interface (MIPI). For example, the host system 400 can be connected to the driver IC 300 via a flexible printed circuit (FPC).

[0082] Alternatively, the display panel 100 can be made of a flexible panel suitable for flexible displays.

[0083] Figure 4 This is a cross-sectional view illustrating the conceptual diagram of a pixel region within the display area of ​​a display panel according to an embodiment of the present invention. It should be noted that the cross-sectional structure of the pixel region is not limited to... Figure 4 The cross-sectional structure. In Figure 4 In this context, TFT can represent the driving element of a pixel circuit. Specifically, TFT1 can be a first TFT, which is one of the low-temperature polycrystalline silicon (LTPS) TFTs disposed in the display area, and TFT2 can be a second TFT, which is one of the oxide TFTs disposed in the display area.

[0084] Reference Figure 4 Multiple pixel circuits and wiring connected to the pixel circuits can be arranged in the display area DA of the display panel 100. Here, the pixel circuit of the display area may include a pixel circuit that drives a red sub-pixel of a red light-emitting element, a pixel circuit that drives a green sub-pixel of a green light-emitting element, and a pixel circuit that drives a blue sub-pixel of a blue light-emitting element.

[0085] The substrate PI may include a first substrate PI1 and a second substrate PI2. Furthermore, an inorganic film IPD may be formed between the first substrate PI1 and the second substrate PI2. In this case, the inorganic film IPD can block moisture penetration. Here, since the substrate PI can be formed of polyimide, it can be referred to as a PI substrate, and the first substrate PI1 and the second substrate PI2 can be referred to as the first PI substrate and the second PI substrate.

[0086] A first buffer layer BUF1 is formed on the second substrate PI2. The first buffer layer BUF1 may be formed of a multilayer insulating layer consisting of two or more oxide layers SiO2 and nitride layers SiNx stacked together. A first semiconductor layer is formed on the first buffer layer BUF1. The first semiconductor layer may include a polysilicon semiconductor layer patterned in a photolithography process. The first semiconductor layer may include a polysilicon active pattern (first active pattern) ACT1 forming a semiconductor channel in the first TFT TFT1.

[0087] A first gate insulating layer GI1 is deposited on the first buffer layer BUF1 to cover the first active pattern ACT1 of the first semiconductor layer. The first gate insulating layer GI1 includes an inorganic insulating material layer. A first metal layer is formed on the first gate insulating layer GI1. The first metal layer is insulated from the first semiconductor layer through the first gate insulating layer GI1.

[0088] The first metal layer may include a single metal layer patterned in a photolithography process or a metal pattern consisting of two or more stacked metal layers. The first metal layer may include the gate electrode GE1 of the first TFT TFT1 and the light-shielding pattern BSM under the second TFT TFT2.

[0089] A first interlayer insulating layer ILD1 is formed on the first gate insulating layer GI1 to cover the pattern of the first metal layer. The first interlayer insulating layer ILD1 may include an inorganic insulating material. A second buffer layer BUF2 is formed on the first interlayer insulating layer ILD1. The second buffer layer BUF2 may include a single layer or multiple layers of inorganic insulating material.

[0090] A second semiconductor layer is formed on the second buffer layer BUF2. The second semiconductor layer may include an oxide active pattern (second active pattern) ACT2 forming a semiconductor channel in the second TFT TFT2. A second gate insulating layer GI2 may be deposited on the second buffer layer BUF2 to cover the second active pattern ACT2 of the second semiconductor layer. The second gate insulating layer GI2 may include a single layer or multiple layers of inorganic insulating material. A second metal layer may be formed on the second gate insulating layer GI2. The second metal layer can be insulated from the second semiconductor layer through the second gate insulating layer GI2.

[0091] The second metal layer may include a single metal layer patterned in a photolithography process or a metal pattern consisting of two or more stacked metal layers. The second metal layer may include the gate electrode GE2 and the lower capacitor electrode CE1 of the second TFT TFT2.

[0092] A second interlayer insulating layer (ILD2) can be formed on the second gate insulating layer (GI2) to cover the pattern of the second metal layer. The second interlayer insulating layer (ILD2) may comprise a single layer or multiple layers of inorganic insulating material. A third metal layer can be formed on the second interlayer insulating layer (ILD2). The third metal layer can be insulated from the second metal layer through the second interlayer insulating layer (ILD).

[0093] The third metal layer may include a single metal layer patterned in a photolithography process or a metal pattern consisting of two or more stacked metal layers. The third metal layer may include an upper capacitor electrode CE2. The capacitor Cst of the pixel circuit may consist of the upper capacitor electrode CE2, the lower capacitor electrode CE1, and the dielectric layer between them, namely the second interlayer insulating layer ILD2.

[0094] A third interlayer insulating layer (ILD3) with a pattern covering the third metal layer can be formed on the second interlayer insulating layer (ILD2). The third interlayer insulating layer (ILD3) may comprise a single layer or multiple layers of inorganic insulating material. A fourth metal layer can be formed on the third interlayer insulating layer (ILD3). The fourth metal layer can be insulated from the second semiconductor layer through the second gate insulating layer (GI2), the second interlayer insulating layer (ILD2), and the third interlayer insulating layer (ILD3).

[0095] The fourth metal layer may comprise a single metal layer patterned in a photolithography process or a metal pattern comprising two or more stacked metal layers. The fourth metal layer may comprise a first electrode E11 and a second electrode E12 of the first TFT TFT1, and a first electrode E21 and a second electrode E22 of the second TFT TFT2, and may be... Figure 4 The first TFT SD1 has a metal pattern. The first electrode E11 and the second electrode E12 of the first TFT TFT1 can be connected to the first active pattern ACT1 through a first contact hole passing through insulating layers GI1, ILD1, BUF2, GI2, ILD2, and ILD3. The first electrode E21 and the second electrode E22 of the second TFT TFT 2 can be connected to the second active pattern ACT2 through a second contact hole passing through insulating layers GI2, ILD2, and ILD3. The first electrode E21 of the second TFT TFT 2 can be connected to the light-shielding pattern BSM through a third contact hole passing through insulating layers ILD1, BUF2, GI2, ILD2, and ILD3.

[0096] The first planarization layer PLN1 can cover the metal pattern SD1 of the fourth metal layer. The first planarization layer PLN1 can cover the display area DA of the circuit layer 12 with a relatively thick organic insulating material. When the first planarization layer PLN1 is applied to the circuit layer 12, the organic insulating material can flow to the edge of the display panel 100 and cover the side of the circuit layer 12.

[0097] A fifth metal layer can be formed on the first planarization layer PLN1. The fifth metal layer can be insulated from the fourth metal layer through the first planarization layer PLN1. The fifth metal layer can include a single metal layer patterned in a photolithography process or a metal pattern consisting of two or more stacked metal layers. The fifth metal layer can include a metal pattern SD2 that connects a light-emitting element to the second TFT TFT2. The metal pattern SD2 can be connected to the second electrode E22 of the second TFT TFT2 through a fourth contact hole penetrating the first planarization layer PLN1.

[0098] A second planarization layer PLN2 can be formed on the first planarization layer PLN1 to cover the metal pattern of the fifth metal layer. The second planarization layer PLN2 can cover the display area DA of the circuit layer 12 with a relatively thick organic insulating material. A sixth metal layer can be formed on the second planarization layer PLN2. The second planarization layer PLN2 can planarize the surface on which the sixth metal layer is formed.

[0099] The sixth metal layer may include a single metal layer patterned in a photolithography process or a metal pattern consisting of two or more stacked metal layers. The pattern of the sixth metal layer may include the anode AND of the light-emitting element. The anode AND may contact the metal pattern SD2 of the second TFT TFT2 connected to the pixel circuit via a fifth contact hole penetrating the second planarization layer PLN2.

[0100] In the light-emitting element layer 14, a dam BNK can be formed on the second planarization layer PLN2 to cover the edge of the anode electrode AND. In this case, the dam BNK can be formed with a pattern that defines the light-emitting region (or opening region) that emits light outward from each pixel. Therefore, the dam BNK can be referred to as a pixel-defining film. The dam BNK can be patterned in a photolithography process by including a photosensitive organic insulating material. Furthermore, a spacer SPC with a predetermined height can be formed on the dam BNK. In this case, the dam BNK and the spacer SPC can be integrated with the same organic insulating material. In addition, the spacer SPC ensures the gap between the fine metal mask (FMM) and the anode electrode AND, so that the FMM does not contact the anode electrode AND during the deposition process of the organic compound layer EL formed of organic compound.

[0101] A seventh metal layer, serving as the cathode electrode CAT for light-emitting elements, can be formed on the embankment BNK and the organic compound layer EL. This seventh metal layer can be connected between sub-pixels in the display area DA. Here, the organic compound layer EL can be referred to as the light-emitting layer or the electroluminescent layer.

[0102] The encapsulation layer 16 may include multiple insulating layers covering the cathode electrode CAT of the light-emitting element. The multiple insulating layers may include a first inorganic insulating layer PAS1 covering the cathode electrode CAT, a thicker organic insulating layer PCL covering the first inorganic insulating layer PAS1, and a second inorganic insulating layer PAS2 covering the organic insulating layer PCL. Here, the organic insulating layer PCL may be the first organic insulating layer.

[0103] The touch sensor layer 18 may include: a third buffer layer BUF3 covering the second inorganic insulating layer PAS2, a bridging metal BRM disposed on the third buffer layer BUF3, an inorganic touch interlayer insulating layer TILD covering the bridging metal BRM, a touch sensor metal TSM disposed on the inorganic touch interlayer insulating layer TILD, and a first insulating layer PAC1 covering the touch interlayer insulating layer TILD and the touch sensor metal TSM. Here, the third buffer layer BUF3 may be a touch buffer layer. The first insulating layer PAC1 may include an organic insulating material and may be either a second organic insulating layer or a touch insulating layer.

[0104] The eighth metal layer, used as the bridging metal BRM, can be disposed on the third buffer layer BUF3 and can overlap with the embankment BNK. The eighth metal layer can include a single metal layer patterned in a photolithography process or a metal pattern consisting of two or more stacked metal layers.

[0105] The ninth metal layer may comprise a single metal layer patterned in a photolithography process or a metal pattern comprising two or more stacked metal layers. The pattern of the ninth metal layer may include a touch sensor metal (TSM). The touch sensor metal (TSM) may contact the bridging metal (BRM) through a sixth contact hole penetrating the touch interlayer insulating layer (TILD).

[0106] Figure 5 It is a diagram Figure 2 A magnified view of region A in the image. Figure 6 It is a diagram Figure 5 A magnified view of region Aa in the image.

[0107] Reference Figure 5 and Figure 6The light-transmitting area TA corresponding to the sensor 200 can be formed into a circular shape, and the boundary area BA can be disposed around the light-transmitting area TA, but the embodiments of this application are not limited to this. For example, the light-transmitting area TA can have various shapes such as polygonal shapes and elliptical shapes, and the shape of the boundary area BA can also be changed corresponding to the shape of the light-transmitting area TA.

[0108] In the boundary area BA, wiring TL can be configured to bypass the light-transmitting area TA. In this case, unlike the display area DA, the boundary area BA can be an area where no image is displayed.

[0109] The wiring TL may include a straight portion TLa and a curved portion TLb extending from one side of the straight portion TLa. In this case, the curved portion TLb may extend in a circumferential direction with reference to the center C of the light-transmitting region TA. For example, the curved portion TLb may be arranged along a curve with a predetermined radius of curvature with reference to the center C of the light-transmitting region TA.

[0110] In the wiring TL, at least one hole HL can be disposed in the curved portion TLb and can overlap with the second sensor 220. Here, the hole HL of the wiring TL can penetrate the wiring TL in the Z-axis direction. In this case, the hole HL can be formed inside the wiring TL, but the embodiments of this application are not necessarily limited to this. For example, the hole HL can be formed to contact the edge of the wiring TL. Therefore, the hole HL can be set in a plan view as a groove recessed on the edge of the wiring TL. The hole HL of the wiring TL can be a first hole, a light-transmitting hole, a wiring hole, a touch wiring hole, or a line hole.

[0111] The wiring TL can be touch wiring. For example, the wiring TL can be formed by a metal pattern that forms the capacitor of the touch sensor. For example, the wiring TL can be formed by at least one of the materials that constitute the bridging metal BRM and the touch sensor metal TSM.

[0112] The boundary region BA can include an inner boundary region IBA and an outer boundary region OBA. For example, a first boundary region BA1 can be set around the first light-transmitting region TA1 (see...). Figure 2 A second boundary region BA2 can be set around the second light-transmitting region TA2 (see...). Figure 2 Here, "inner side" can refer to the direction towards the center C of the light-transmitting area TA, with the light-transmitting area TA as the reference, and "outer side" can refer to the opposite direction.

[0113] The inner boundary region IBA can be configured to surround the light-transmitting region TA, and the outer boundary region OBA can be configured to surround the inner boundary region IBA. In this case, the display region DA can be located around the outer boundary region OBA. Specifically, the first inner boundary region IBA1 can be located outside the first light-transmitting region TA1. The first outer boundary region OBA1 can be located outside the first inner boundary region IBA1. The display region DA can be located around the first outer boundary region OBA1. That is, the first inner boundary region IBA1 can be located between the first outer boundary region OBA1 and the first light-transmitting region TA1. In this case, similar to the first boundary region BA1 of the first light-transmitting region TA1, the second boundary region BA2 located outside the second light-transmitting region TA2 can also include the inner boundary region IBA and the outer boundary region OBA.

[0114] The aperture HL of the wiring TL can be set in the outer boundary region OBA. Here, the wiring TL with the aperture HL can be referred to as a light-transmitting wiring.

[0115] When the hole HL of the wiring TL is provided in the inner boundary region IBA, light introduced into the display panel 100 through the hole HL of the wiring TL may affect the camera provided as the first sensor 210. Therefore, in the display device according to an embodiment of the present invention, by providing the hole HL of the wiring TL in the outer boundary region OBA, light introduced into the first sensor 210 through the hole HL of the wiring TL can be prevented or minimized.

[0116] Among multiple wirings TL, a light-transmitting wiring forming an aperture HL can be placed in the outer boundary region OBA. The light-transmitting wirings can be spaced apart from each other in a radial direction with the center C of the light-transmitting region TA as a reference.

[0117] The light-transmitting wiring may include a first light-transmitting wiring TL1 with a first light-transmitting hole HL1, a second light-transmitting wiring TL2 with a second light-transmitting hole HL2, a third light-transmitting wiring TL3 with a third light-transmitting hole HL3, a fourth light-transmitting wiring TL4 with a fourth light-transmitting hole HL4, and a fifth light-transmitting wiring TL5 with a fifth light-transmitting hole HL5, but the embodiments of this application are not limited thereto. In order to increase the amount of light reaching the second sensor 220, more light-transmitting wiring may be provided in the outer boundary region OBA.

[0118] The light-transmitting holes HL1, HL2, HL3, HL4, and HL5 disposed in the respective light-transmitting wirings TL1, TL2, TL3, TL4, and TL5 can be configured to not overlap with each other in the radial direction. For example, the light-transmitting holes HL1, HL2, HL3, HL4, and HL5 can be spaced apart from each other in the circumferential direction with reference to the center C of the light-transmitting region TA. Therefore, the first light-transmitting hole HL1 and the second light-transmitting hole HL2 can form a predetermined first angle θ1 with reference to the center C of the light-transmitting region TA. The first light-transmitting hole HL1 and the fifth light-transmitting hole HL5 can form a predetermined second angle θ2 with reference to the center C of the light-transmitting region TA. Therefore, the display panel 100 can ensure uniform and sufficient light quantity through the light-transmitting holes HL1, HL2, HL3, HL4, and HL5 configured to not overlap with each other. Here, the first angle θ1 and the second angle θ2 can be the same, but the embodiments of this application are not limited to this.

[0119] Figure 7 It is a diagram along Figure 2 The image shows a cross-sectional view taken along line I-I' from the substrate of the display panel to the touch sensor layer. Figure 8 It is a diagram along Figure 2 The image shows a cross-sectional view of the adhesive layer and functional layer disposed on the touch sensor layer of the display panel, taken by line I-I'. For example, Figure 8 This is a cross-sectional view illustrating the process from the substrate to the functional layers of the display panel. Here, Figure 8 The display panel 100 according to the first embodiment, which is provided in the display device according to the present invention, can be illustrated.

[0120] The boundary region BA can include a partial structure of a substrate PI, a circuit layer 12 on the substrate PI, a light-emitting element layer 14 on the circuit layer 12, an encapsulation layer 16 on the light-emitting element layer 14, and a touch sensor layer 18 on the encapsulation layer 16, all disposed in the pixel region. For example, the partial structures of the substrate PI, circuit layer 12, light-emitting element layer 14, encapsulation layer 16, and touch sensor layer 18 disposed in the pixel region can extend to the boundary region BA. Furthermore, the boundary region BA can be formed using a process that forms the partial structures of the substrate PI, circuit layer 12, light-emitting element layer 14, encapsulation layer 16, and touch sensor layer 18. Therefore, in terms of arrangement structure, it is similar to the reference... Figure 4 The constructions in the pixel regions of the described display area DA are substantially the same, represented by the same reference numerals, and will not be repeated or their redundant descriptions will be simplified.

[0121] The light-transmitting area TA may include an aperture structure H that allows light to enter the sensor 200 disposed below the display panel 100. For example, the first light-transmitting area TA1 may include an aperture structure for allowing light to enter the first sensor 210 disposed below the display panel 100.

[0122] Reference Figure 4 , Figure 7 and Figure 8 The boundary region BA may include moisture penetration prevention structures, such as multiple weirs (DAM) and multiple raised patterns (ST). Therefore, the moisture penetration prevention structure can protect the light-emitting elements of the display area DA from moisture, oxygen, etc., that may be introduced from the light-transmitting area TA.

[0123] The weir section DAM and the raised pattern ST can be set on the second interlayer insulation layer ILD2.

[0124] The weir section (DAM) and the raised pattern (ST) can be formed using multiple layers set in the display area (DA) or multiple layers extending from the display area (DA). In this case, there is no particular limitation on the number of weir sections (DAM) and the number of raised patterns (ST).

[0125] The weir-shaped area (DAM) and the raised pattern (ST) can be arranged in a closed loop shape around the light-transmitting area (TA). Therefore, the weir-shaped area (DAM) and the raised pattern (ST) can prevent moisture and other substances from penetrating into the display area (DA) through the light-transmitting area (TA).

[0126] Multiple raised patterns ST can be spaced apart from each other on the second interlayer insulating layer ILD2, but the embodiments of this application are not limited to this. In this case, the raised pattern ST may include a first raised pattern ST1 disposed on the display area DA side with the weir DAM as a reference and a second raised pattern ST2 disposed on the light-transmitting area TA side. Therefore, multiple first raised patterns ST1 can be disposed between the display area DA and the weir DAM, and multiple second raised patterns ST2 can be disposed between the weir DAM and the light-transmitting area TA. In this case, the first raised pattern ST1 may overlap with the organic insulating layer PCL.

[0127] The weir section DAM can be set between multiple first protrusion patterns ST1 and multiple second protrusion patterns ST2, and can be formed with a height higher than the protrusion patterns ST, based on the second interlayer insulation layer ILD2. Therefore, since the weir section DAM increases the length of the path through which oxygen, moisture, etc., permeate, it can more effectively block oxygen, moisture, etc., introduced through the light-transmitting area TA.

[0128] The weir section DAM may include the same materials as those forming the third interlayer insulation layer ILD3, the second planarization layer PLN2, the dam section BNK, the organic compound layer EL, and the first inorganic insulation layer PAS1, but embodiments of this application are not limited to this. For example, the weir section DAM may include a metal layer. The weir section DAM may include the first planarization layer PLN1 instead of the third interlayer insulation layer ILD3.

[0129] The weir section DAM can be formed using the same process as that used to form the third interlayer insulating layer ILD3, the second planarization layer PLN2, the dam section BNK, the organic compound layer EL, and the first inorganic insulating layer PAS1, but the embodiments of this application are not limited to this.

[0130] The raised pattern ST may include the same materials as those used to form the third interlayer insulating layer ILD3, the second planarization layer PLN2, the organic compound layer EL, and the first inorganic insulating layer PAS1, but embodiments of this application are not limited to this. For example, the raised pattern ST may include a metal layer. The raised pattern ST may include the first planarization layer PLN1 instead of the third interlayer insulating layer ILD3. In this case, the raised pattern ST may include an undercut shape such as a "T" shape or an "I" shape by an etching process.

[0131] The wiring TL can be configured to overlap with the weir section DAM and / or the protrusion pattern ST. In this case, the wiring TL can be positioned on the touch interlayer insulating layer TILD located on the weir section DAM and / or the protrusion pattern ST.

[0132] The wiring TL can be formed in the same process as the process for forming the touch sensor metal TSM, which is provided as the ninth metal layer, but the embodiments of this application are not limited to this. For example, the wiring TL can be provided on the third buffer layer BUF3 located on the weir portion DAM and / or the protrusion pattern ST. In this case, the wiring TL can be formed together with the bridging metal BRM, which is provided as the eighth metal layer.

[0133] Multiple wirings TL may include light-transmitting wirings having light-transmitting holes HL. For example, multiple wirings TL may include a first light-transmitting wiring TL1 having a first light-transmitting hole HL1, but the embodiments of this application are not limited thereto. For example, multiple wirings TL may also include at least one of the second to fifth light-transmitting wirings TL2, TL3, TL4, TL5 having second to fifth light-transmitting holes HL2, HL3, HL4, HL5 respectively.

[0134] Because light-transmitting holes HL are formed in the light-transmitting wiring, light can be introduced into the second sensor 220 through the light-transmitting holes HL. In this case, the light-transmitting holes HL can be located above the raised pattern ST. The more light-transmitting holes HL that overlap with the second sensor 220, the greater the amount of light introduced into the second sensor 220.

[0135] Reference Figure 7 and Figure 8The functional layer 30 can be disposed above the touch sensor layer 18 via the adhesive layer 20. In this case, the display panel 100 may include a hole structure H formed in the light-transmitting region TA. The material constituting the adhesive layer 20 may be disposed inside the hole structure H, but the embodiments of this application are not limited to this. For example, a transparent material different from the adhesive layer 20 may be disposed inside the hole structure H.

[0136] The adhesive layer 20 may be disposed on the first insulating layer PAC1 of the touch sensor layer 18. The adhesive layer 20 may include an epoxy-based material, a polyurethane-based material, or a polyester-based material.

[0137] The functional layer 30 can be disposed on the adhesive layer 20. In this case, the functional layer 30 can be a polarizing layer, and can be implemented by a polarizer combining a linear polarizer and a retardation film, or a circular polarizer. The functional layer 30 can be a polarizing film.

[0138] In the display panel 100 according to the first embodiment, when the functional layer 30 is configured to include a polarizing film (or polarizing layer) with low reflection function, the black matrix BM may not be provided in the display panel 100 according to the first embodiment depending on the function of the polarizing film. However, the embodiments of this application are not limited to this.

[0139] Figure 9 It is a diagram along Figure 2 The line I-I' in the figure represents a view of the display panel according to another embodiment of the present invention. Figure 10 It is a diagram along Figure 2 The image shows a cross-sectional view of the adhesive layer and functional layer disposed on the touch sensor layer of a display panel according to another embodiment of the present invention, taken by line I-I'. For example, Figure 10 It is set in Figure 9 A cross-sectional view of the adhesive layer and functional layer in the display panel. Figure 8 This is a view of the display panel 100 according to the first embodiment of the present invention. Figure 9 and Figure 10 This is a view of the display panel 100a according to the second embodiment of the present invention.

[0140] Reference Figures 8 to 10 A comparison is made between the display panel 100 according to the first embodiment and the display panel 100a according to the second embodiment. The display panel 100a according to the second embodiment has a structure in which the adhesive layer 20a may further include a lens portion 22. Therefore, the display device according to the embodiments of the present invention may include the display panel 100a according to the second embodiment, instead of the display panel 100 according to the first embodiment.

[0141] The display panel 100a according to the second embodiment may include a display area DA, a light-transmitting area TA, and a boundary area BA. In this case, an adhesive layer 20a including a lens portion 22 may be provided in the boundary area BA, and the lens portion 22 may overlap with the hole HL of the wiring TL.

[0142] When describing the boundary region BA of the display panel 100a according to the second embodiment, compared with reference to Figure 7 and Figure 8 The constructions in the boundary region BA of the display panel 100 according to the first embodiment are substantially the same, and are indicated by the same reference numerals, and their redundant descriptions will not be repeated or will be simplified.

[0143] Reference Figure 9 and Figure 10 According to the second embodiment, the adhesive layer 20a of the display panel 100a can be configured as an adhesive member for attaching the functional layer 30 to the touch sensor layer 18. In this case, the adhesive layer 20a may include an epoxy-based material, a polyurethane-based material, or a polyester-based material.

[0144] The adhesive layer 20a may include a plate-shaped main body portion 21 and a lens portion 22 formed to protrude from the main body portion 21.

[0145] The main body 21 can be formed in the form of a plate and can be disposed on the first insulating layer PAC1.

[0146] The lens portion 22 can be formed to protrude from the lower surface 21a of the main body portion 21 toward the second sensor 220.

[0147] The lens portion 22 can be disposed at the lower part of the main body portion 21 and can be formed in a shape that protrudes toward the second sensor 220.

[0148] The lens portion 22 may include a predetermined curved surface 22a for focusing light, and the curved surface 22a may be oriented toward the second sensor 220. More specifically, the curved surface 22a may be oriented toward the aperture HL of the wiring TL. For example, the lens portion 22 may be formed in a hemispherical shape.

[0149] The lens portion 22 may be located in the first insulating layer PAC1.

[0150] Reference Figure 9 and Figure 10 A hemispherical groove G can be formed in the upper surface of the first insulating layer PAC1, and an adhesive material for forming the adhesive layer 20a can be disposed in the groove G. Therefore, since the lens portion 22 can be formed corresponding to the shape of the groove G, the lens portion 22 can overlap with the first insulating layer PAC1 in the X-axis direction (or Y-axis direction).

[0151] The lens portion 22 can overlap with the aperture HL of the wiring TL. For example, the lens portion 22 can overlap with at least one of the first light-transmitting aperture HL1 of the first light-transmitting wiring TL1, the second light-transmitting aperture HL2 of the second light-transmitting wiring TL2, the third light-transmitting aperture HL3 of the third light-transmitting wiring TL3, the fourth light-transmitting aperture HL4 of the fourth light-transmitting wiring TL4, and the fifth light-transmitting aperture HL5 of the fifth light-transmitting wiring TL5. Therefore, the light focused by the lens portion 22 can reach the second sensor 220 through the aperture HL of the wiring TL.

[0152] The lens portion 22 can be formed to have a predetermined refractive index. In this case, the refractive index of the lens portion 22 can be greater than the refractive index of the first insulating layer PAC1. For example, the refractive index of the lens portion 22 can be equal to or greater than 1.56, and the refractive index of the first insulating layer PAC1 can be from 1.3 to 1.514. In this case, in order to focus light, the lens portion 22 and the first insulating layer PAC1 can be formed such that the difference between the refractive index of the lens portion 22 and the refractive index of the first insulating layer PAC1 is equal to or greater than 0.1.

[0153] The main body 21 and the lens part 22 can be formed integrally.

[0154] The functional layer 30 disposed on the adhesive layer 20a can be a polarizing layer, and can be implemented by a polarizer combining a linear polarizer and a retardation film, or a circular polarizer. The functional layer 30 can be a polarizing film.

[0155] When the functional layer 30 in the display panel 100a according to the second embodiment is configured to include a polarizing film (or polarizing layer) with low reflection function, the black matrix BM may not be provided in the display panel 100a according to the second embodiment depending on the function of the polarizing film, but the embodiments of this application are not limited to this.

[0156] Figure 11 This is a view illustrating a lens portion separately disposed in a display panel according to another embodiment of the present invention.

[0157] Reference Figure 11 The display device according to this embodiment of the present invention may include a lens portion 22 provided as a separate structure. For example, a hemispherical groove G may be formed in the upper surface of the first insulating layer PAC1, and a material different from that of the main body portion 21 may be provided in the groove G to form a separate lens portion 22. After forming the lens portion 22, the main body portion 21 of the adhesive layer 20 formed of adhesive material may be provided on the first insulating layer PAC1 and the lens portion 22.

[0158] The material of the lens portion 22 may be different from the material of the main body portion 21. For example, the lens portion 22 may be formed using polymer-based organic materials and / or silicon-based inorganic materials.

[0159] Figure 12 It is a cross-sectional view illustrating the cross-sectional structure of a pixel region disposed in the display area of ​​a display panel according to another embodiment of the present invention. Figure 13 It is a diagram along Figure 2 The view of the display panel according to another embodiment of the present invention, taken by line I-I', is an illustrated cross-sectional view from the substrate of the display panel to the black matrix. Figure 14 It is a diagram along Figure 2 The view of the display panel according to another embodiment of the present invention, taken by line I-I', is illustrated in the figure. Figure 13 A cross-sectional view of the adhesive layer and functional layer on the black matrix. Here, Figures 12 to 14 A display panel 100b according to a third embodiment, which is provided in a display device according to an embodiment of the present invention, can be illustrated.

[0160] Reference Figure 4 , Figure 8 and Figures 12 to 14 The display panel 100 according to the first embodiment and the display panel 100b according to the third embodiment are compared. The display panel 100b according to the third embodiment may include an adhesive layer 20a including a lens portion 22 and a black matrix BM disposed on the first insulating layer PAC1. The display panel 100b according to the third embodiment may include a functional layer 30 provided as a cover glass. That is, in the display device according to the embodiment of the present invention, whether to provide a black matrix BM can be determined according to the function of the components provided in the functional layer 30. For example, when the functional layer 30 is provided as a cover glass or a color filter, a black matrix can be provided in the display panel.

[0161] The display panel 100b according to the third embodiment may include: a display area DA including a pixel area, a light-transmitting area TA, and a boundary area BA.

[0162] The pixel region of the display panel 100b according to the third embodiment may include a substrate PI, a circuit layer 12 on the substrate PI, a light-emitting element layer 14 on the circuit layer 12, an encapsulation layer 16 on the light-emitting element layer 14, a touch sensor layer 18 on the encapsulation layer 16, a black matrix BM disposed on the touch sensor layer 18, an adhesive layer 20a disposed on the black matrix BM, and a functional layer 30 disposed on the adhesive layer 20a. In this case, since the arrangement structure of the substrate PI, circuit layer 12, light-emitting element layer 14, encapsulation layer 16, and touch sensor layer 18 is similar to that of the reference PI, the display panel 100b may include a substrate PI, a circuit layer 12 on the substrate PI, a light-emitting element layer 14, an encapsulation layer 16, and a touch sensor layer 18 is similar to that of the reference PI. Figure 4The pixel regions of the described display area DA are substantially the same, and therefore are represented by the same reference numerals, and their redundant descriptions will not be repeated or simplified. When describing the boundary region BA of the display panel 100b according to the third embodiment, the reference numerals are used... Figure 7 and Figure 8 The constructions in the boundary region BA of the display panel 100 according to the first embodiment are substantially the same, and are indicated by the same reference numerals, and their redundant descriptions will not be repeated or will be simplified.

[0163] Reference Figure 12 A black matrix BM can be set on the first insulating layer PAC1.

[0164] The black matrix BM may have an opening OP that overlaps with the aperture HL of the light-emitting region EA, the light-transmitting region TA, and the wiring TL. In this case, the opening OP may be set as an aperture penetrating the black matrix BM in the Z-axis direction. Here, the black matrix BM may be formed of a material with high optical density (OD). Therefore, the black matrix BM can absorb or block light.

[0165] In the display panel 100b according to the third embodiment, unlike the display panel 100 according to the first embodiment, since the cover glass is provided instead of the polarizer as the functional layer 30, external light may be reflected by the wiring provided in the circuit layer 12, etc., thereby degrading the display quality of the display device.

[0166] Therefore, by placing a black matrix BM in the area other than the light-emitting area EA and the light-transmitting area TA, external light can be prevented from being reflected by wirings in the circuit layer 12, etc. In this case, the black matrix BM may have an opening OP that overlaps with the hole HL of the wiring TL. Here, the opening OP that overlaps with the hole HL of the wiring TL may be referred to as a second hole, a black matrix hole, etc.

[0167] Openings (OPs) can be formed by patterning using photolithography.

[0168] The opening OP can be configured to overlap with the aperture HL of the wiring TL. For example, the opening OP can be formed to overlap with the first light-transmitting aperture HL1. Multiple wiring TLs can also include at least one of the second to fifth light-transmitting wirings TL2, TL3, TL4, and TL5, respectively having second to fifth light-transmitting apertures HL2, HL3, HL4, and HL5. Therefore, the black matrix BM can also have an opening OP that overlaps with at least one of the second to fifth light-transmitting apertures HL2, HL3, HL4, and HL5.

[0169] The width of the opening OP that overlaps with the hole HL in the wiring TL can be greater than the width of the hole HL formed in the wiring TL. For example, since the display panel 100b according to the third embodiment of the present invention focuses light via the lens portion 22, the opening OP that overlaps with the hole HL in the wiring TL can be formed to have a width greater than the width of the hole HL formed in the wiring TL.

[0170] A portion of the adhesive layer 20a constituting the lens portion 22 can be provided in the opening OP.

[0171] Reference Figure 13 and Figure 14 A hemispherical groove G can be formed in the upper surface of the first insulating layer PAC1, and a black matrix BM can be provided on the first insulating layer PAC1. In this case, the opening OP of the black matrix BM can be formed to overlap with the groove G. The opening OP of the black matrix BM can overlap with the hole HL formed in the wiring TL. The adhesive material for forming the adhesive layer 20a can be provided in the groove G via the opening OP. Therefore, since the lens portion 22 can be formed corresponding to the shape of the groove G, the lens portion 22 can overlap with the first insulating layer PAC1 in the X-axis direction (or Y-axis direction).

[0172] The lens portion 22 of the display panel 100b according to the third embodiment of the present invention can be like... Figure 11 The display panel 100a shown is set up separately.

[0173] The display panel 100b according to the third embodiment of the present invention includes a lens portion 22 as an example, but the embodiments of this application are not limited to this. Similar to... Figure 8 The adhesive layer 20 of the display panel 100 shown can be achieved by removing the lens portion 22.

[0174] Figure 15 It is a cross-sectional view illustrating the cross-sectional structure of a pixel region disposed in the display area of ​​a display panel according to another embodiment of the present invention. Figure 16 It is a diagram along Figure 2 The view shown by line I-I' in the figure is a cross-sectional view of a display panel according to another embodiment of the present invention, which is an illustration of the cross-sectional view from the substrate of the display panel to the first insulating layer. Figure 17 It is a diagram along Figure 2 The view of the display panel according to another embodiment of the present invention, taken by line I-I', is illustrated in the figure. Figure 16 A cross-sectional view of the adhesive layer and functional layer on the first insulating layer. Figures 15 to 17 A display panel 100c according to a fourth embodiment can be illustrated in a display device according to an embodiment of the present invention.

[0175] Reference Figure 4 , Figure 8 and Figures 15 to 17 The display panel 100 according to the first embodiment and the display panel 100c according to the fourth embodiment are compared. The display panel 100c according to the fourth embodiment may include an adhesive layer 20a, which includes a lens portion 22. Furthermore, a functional layer 30 including a color filter may be provided in the display panel 100c according to the fourth embodiment.

[0176] The display panel 100c according to the fourth embodiment may include: a display area DA including a pixel area, a light-transmitting area TA, and a boundary area BA.

[0177] The pixel region of the display panel 100c according to the fourth embodiment may include a substrate PI, a circuit layer 12 on the substrate PI, a light-emitting element layer 14 on the circuit layer 12, an encapsulation layer 16 on the light-emitting element layer 14, a touch sensor layer 18 on the encapsulation layer 16, an adhesive layer 20a disposed on the touch sensor layer 18, and a functional layer 30 disposed on the adhesive layer 20a. In this case, since the arrangement structure of the substrate PI, circuit layer 12, light-emitting element layer 14, encapsulation layer 16, and touch sensor layer 18 is similar to that of the reference PI... Figure 4 The pixel regions of the described display area DA are substantially the same, and therefore are represented by the same reference numerals, and their redundant descriptions will not be repeated or simplified. When describing the boundary region BA of the display panel 100c according to the fourth embodiment, the reference numerals are used... Figure 7 and Figure 8 The constructions in the boundary region BA of the display panel 100 according to the first embodiment are substantially the same, and are indicated by the same reference numerals, and their redundant descriptions will not be repeated or will be simplified.

[0178] Reference Figures 15 to 17 Instead of a polarizer, a color filter layer to improve color purity can be provided as functional layer 30. Therefore, functional layer 30 may include a color filter CF and a black matrix BM. In this case, functional layer 30 can be disposed on adhesive layer 20a.

[0179] Reference Figure 15 The functional layer 30 disposed in the pixel region of the display area DA may include a fourth buffer layer BUF4 disposed on the adhesive layer 20a, a black matrix BM and a color filter CF disposed on the fourth buffer layer BUF4 with an opening OP, and a second insulating layer PAC2 covering the black matrix BM and the color filter CF. Here, the fourth buffer layer BUF4 may be a color filter buffer layer. The second insulating layer PAC2 may include an organic insulating material, and may be a third organic insulating layer or a color filter insulating layer.

[0180] The fourth buffer layer BUF4 may comprise a single layer or multiple layers of inorganic insulating material. For example, the fourth buffer layer BUF4 may be formed from a multilayer insulating film in which two or more oxide films (SiO2) and nitride films (SiNx) are stacked.

[0181] The color filter CF can be set to correspond to the light-emitting area EA of the light-emitting element OLED, and can include any color among red, green and blue.

[0182] The color filter CF can include a red filter, a green filter, and a blue filter that match the color of each sub-pixel. Therefore, the color filter CF can be positioned within a portion of the opening OP of the black matrix BM. Furthermore, the color filter CF can overlap with the emitting region EA in the Z-axis direction.

[0183] A second insulating layer, PAC2, can be applied to the black matrix BM and the color filter CF. The second insulating layer, PAC2, can be formed from an organic insulating material such as polyimide or acrylic resin.

[0184] Reference Figure 16 and Figure 17 The functional layer 30 in the boundary region BA and the light-transmitting region TA may include a fourth buffer layer BUF4, a black matrix BM, and / or a second insulating layer PAC2, but the embodiments of this application are not limited to this.

[0185] The black matrix BM can be set on the fourth buffer layer BUF4. In this case, the black matrix BM can have an opening OP that overlaps with the aperture HL of the light-emitting area EA, the light-transmitting area TA, and the wiring TL. Here, the opening OP can be set as an aperture that passes through the black matrix BM in the Z-axis direction.

[0186] Therefore, the black matrix BM disposed in the functional layer 30 is located in an area other than the light-emitting area EA and the light-transmitting area TA, thereby preventing external light from being reflected by wirings disposed in the circuit layer 12. In this case, the black matrix BM may have an opening OP that overlaps with the hole HL of the wiring TL.

[0187] Openings (OPs) can be formed by patterning using photolithography.

[0188] The opening OP can be configured to overlap with the aperture HL of the wiring TL. For example, the opening OP can be formed to overlap with the first light-transmitting aperture HL1. Furthermore, the multiple wiring TLs can also include at least one of the second to fifth light-transmitting wirings TL2, TL3, TL4, and TL5, respectively having second to fifth light-transmitting apertures HL2, HL3, HL4, and HL5. Therefore, the black matrix BM can also have an opening OP that overlaps with at least one of the second to fifth light-transmitting apertures HL2, HL3, HL4, and HL5.

[0189] The width of the opening OP that overlaps with the hole HL in the wiring TL can be greater than the width of the hole HL formed in the wiring TL. For example, since the display panel 100c according to the fourth embodiment of the present invention focuses light via the lens portion 22, the opening OP that overlaps with the hole HL in the wiring TL can be formed to have a width greater than the width of the hole HL formed in the wiring TL.

[0190] Therefore, in the display panel 100c according to the fourth embodiment, unlike the display panel 100 according to the first embodiment, a color filter layer including a color filter CF and a black matrix BM is provided as the functional layer 30 instead of a polarizer. Therefore, light reflection caused by wiring provided in the circuit layer 12, etc., can be prevented or minimized, thereby improving the display quality of the display device. The display panel 100c according to the fourth embodiment can be easily applied to flexible displays because a color filter layer with a thickness relatively smaller than that of a polarizer is provided.

[0191] Reference Figure 16 and Figure 17 A hemispherical groove G can be formed in the upper surface of the first insulating layer PAC1, and the adhesive material for forming the adhesive layer 20a can be disposed in the groove G. Therefore, since the lens portion 22 can be formed corresponding to the shape of the groove G, the lens portion 22 can overlap with the first insulating layer PAC1 in the X-axis direction (or Y-axis direction). A functional layer 30 configured as a color filter layer can be provided on the adhesive layer 20a.

[0192] The lens portion 22 of the display panel 100c according to the fourth embodiment of the present invention can be like... Figure 11 The display panel 100a shown is configured as a separate structure.

[0193] The display panel 100c according to the fourth embodiment of the present invention includes a lens portion 22 as an example, but the embodiments of this application are not limited to this. Similar to... Figure 8 The adhesive layer 20 of the display panel 100 shown can be achieved by removing the lens portion 22.

[0194] The display device according to one or more embodiments of this application can be described as follows.

[0195] A display device according to one or more embodiments of this application may include: a display panel, the display panel including a display area, a light-transmitting area, and a boundary area surrounding the light-transmitting area; and a sensor, wherein the display panel may include: a substrate; a circuit layer disposed on the substrate; a light-emitting element layer disposed on the circuit layer; an encapsulation layer disposed on the light-emitting element layer; a touch sensor layer disposed on the encapsulation layer; and an adhesive layer disposed on the touch sensor layer, wherein at least one of a plurality of wirings disposed in the boundary area may have a first hole overlapping the sensor.

[0196] According to one or more embodiments of this application, the wiring may include a curved portion disposed around the light-transmitting area, and the first hole may be disposed in the curved portion.

[0197] According to one or more embodiments of this application, the sensor may include a first sensor overlapping the light-transmitting area and a second sensor overlapping the first hole, and the second sensor may be an infrared sensor.

[0198] According to one or more embodiments of this application, the light-transmitting area may include a first light-transmitting area and a second light-transmitting area spaced apart from each other, and the second sensor may overlap with the display area disposed between the first light-transmitting area and the second light-transmitting area.

[0199] According to one or more embodiments of this application, the adhesive layer may include a main portion disposed on an insulating layer of the touch sensor layer and a lens portion formed to protrude from the main portion, and the lens portion may overlap with the first hole.

[0200] According to one or more embodiments of this application, the main body portion and the lens portion may be integrally formed.

[0201] According to one or more embodiments of this application, the sensor may include a first sensor overlapping the light-transmitting area and a second sensor overlapping the first hole, and the lens portion may protrude toward the second sensor.

[0202] According to one or more embodiments of this application, the refractive index of the lens portion may be greater than the refractive index of the insulating layer.

[0203] According to one or more embodiments of this application, the lens portion may be disposed in a groove formed in the upper surface of the insulating layer.

[0204] According to one or more embodiments of this application, the display panel may further include a black matrix disposed below the adhesive layer, and the black matrix may have a second hole overlapping the first hole.

[0205] According to one or more embodiments of this application, the width of the second hole may be greater than the width of the first hole.

[0206] According to one or more embodiments of this application, the adhesive layer may include a main portion disposed on an insulating layer of the touch sensor layer and a lens portion formed to protrude from the main portion, and the lens portion may be disposed within the second hole.

[0207] According to one or more embodiments of this application, the display panel may further include a color filter layer disposed on the adhesive layer, the color filter layer may include a color filter and a black matrix, and the black matrix of the color filter layer may have a second hole overlapping the first hole.

[0208] According to one or more embodiments of this application, the adhesive layer may include a main portion disposed on an insulating layer of the touch sensor layer and a lens portion formed to protrude from the main portion, and the second hole may overlap with the lens portion.

[0209] According to one or more embodiments of this application, the plurality of wirings may include a first light-transmitting wiring and a second light-transmitting wiring spaced apart from each other in a radial direction based on the center of the light-transmitting area, and a first light-transmitting hole formed in the first light-transmitting wiring and a second light-transmitting hole formed in the second light-transmitting wiring may be configured not to overlap with each other in the radial direction.

[0210] According to one or more embodiments of this application, the plurality of wirings may include a first light-transmitting wiring and a second light-transmitting wiring spaced apart from each other in a radial direction with reference to the center of the light-transmitting area, and a first light-transmitting hole formed in the first light-transmitting wiring and a second light-transmitting hole formed in the second light-transmitting wiring may form a predetermined angle with reference to the center of the light-transmitting area.

[0211] According to one or more embodiments of this application, the wiring may be touch wiring.

[0212] According to one or more embodiments of this application, a moisture penetration prevention structure disposed on the substrate with a predetermined height may be provided in the boundary region, and the moisture penetration prevention structure may include a plurality of protrusion patterns spaced apart from each other.

[0213] According to one or more embodiments of this application, the moisture penetration prevention structure may further include a weir, and the plurality of protruding patterns may include: a plurality of first protruding patterns disposed between the display area and the weir; and a plurality of second protruding patterns disposed between the weir and the light-transmitting area.

[0214] According to one or more embodiments of this application, the display panel may further include a lens portion disposed in a recess formed in the upper surface of the insulating layer, and the adhesive layer may be disposed on the lens portion. The adhesive layer and the lens portion may be made of different materials.

[0215] A display device according to one or more embodiments of this application may include: a display panel, the display panel including a display area, a light-transmitting area, and a boundary area surrounding the light-transmitting area; and a sensor, wherein the display panel includes: a substrate; a circuit layer disposed on the substrate; a light-emitting element layer disposed on the circuit layer; an encapsulation layer disposed on the light-emitting element layer; a touch sensor layer disposed on the encapsulation layer; and an adhesive layer disposed on the touch sensor layer, the adhesive layer including a main portion and a lens portion formed to protrude from the lower portion of the main portion, at least one of a plurality of wirings disposed in the boundary area having a first hole overlapping the sensor, and the sensor may overlap with the lens portion and the first hole.

[0216] According to one or more embodiments of this application, the sensor may include a first sensor overlapping the light-transmitting area and a second sensor overlapping the first hole, and the second sensor may be an infrared sensor.

[0217] According to one or more embodiments of this application, the display panel may further include a black matrix disposed below the adhesive layer, and the black matrix may have a second hole overlapping the first hole.

[0218] According to one or more embodiments of this application, the display panel may further include a color filter layer disposed on the adhesive layer, the color filter layer may include a color filter and a black matrix, and the black matrix of the color filter layer may have a second hole overlapping the first hole.

[0219] The objectives to be achieved, the means to achieve these objectives, and the effects of this disclosure described above do not specify the essential features of the claims; therefore, the scope of the claims is not limited to the disclosure of this invention.

[0220] Although embodiments of the present disclosure have been described in more detail with reference to the accompanying drawings, the present disclosure is not limited thereto and may be implemented in many different forms without departing from the technical concept of the present disclosure. Therefore, the embodiments disclosed in this disclosure are provided for illustrative purposes only and are not intended to limit the technical concept of the present disclosure. The scope of the technical concept of the present disclosure is not limited thereto. Therefore, it should be understood that the above embodiments are illustrative in all respects and do not limit the present disclosure. The scope of protection of this disclosure should be interpreted based on the following claims, and all technical concepts within the equivalent scope of these claims should be interpreted as falling within the scope of this disclosure.

Claims

1. A display device, comprising: The display panel includes a display area, a light-transmitting area, and a boundary area adjacent to the light-transmitting area; as well as sensor, The display panel includes: substrate; Circuit layer disposed on the substrate; A light-emitting element layer disposed on the circuit layer; An encapsulation layer disposed on the light-emitting element layer; A touch sensor layer disposed on the encapsulation layer; and An adhesive layer disposed on the touch sensor layer At least one of the multiple wires disposed in the boundary region has a first hole that overlaps with the sensor.

2. The display device according to claim 1, wherein: The wiring includes a curved portion disposed around the light-transmitting area, and The first hole is located in the curved portion.

3. The display device according to claim 1, wherein: The sensor includes a first sensor overlapping the light-transmitting area and a second sensor overlapping the first aperture, and The second sensor is an infrared sensor.

4. The display device according to claim 3, wherein: The light-transmitting area includes a first light-transmitting area and a second light-transmitting area that are spaced apart from each other, and The second sensor overlaps with the display area disposed between the first light-transmitting area and the second light-transmitting area.

5. The display device according to claim 1, wherein: The adhesive layer includes a main body portion disposed on an insulating layer of the touch sensor layer, and a lens portion formed to protrude from the main body portion. The lens portion overlaps with the first hole.

6. The display device according to claim 5, wherein: The sensor includes a first sensor overlapping the light-transmitting area and a second sensor overlapping the first aperture, and The lens portion protrudes toward the second sensor.

7. The display device according to claim 6, wherein the lens portion is disposed in a groove formed in the upper surface of the insulating layer.

8. The display device according to claim 1, wherein: The display panel also includes a black matrix disposed beneath the adhesive layer, and The black matrix has a second hole that overlaps with the first hole.

9. The display device according to claim 8, wherein the width of the second hole is greater than the width of the first hole.

10. The display device according to claim 8, wherein: The adhesive layer includes a main body portion disposed on an insulating layer of the touch sensor layer, and a lens portion formed to protrude from the main body portion. The lens portion is disposed within the second hole.

11. The display device according to claim 1, wherein: The display panel also includes a color filter layer disposed on the adhesive layer. The color filter layer includes color filters and a black matrix, and The black matrix of the color filter layer has a second hole that overlaps with the first hole.

12. The display device according to claim 11, wherein: The adhesive layer includes a main body portion disposed on an insulating layer of the touch sensor layer, and a lens portion formed to protrude from the main body portion. The second hole partially overlaps with the lens.

13. The display device according to claim 1, wherein: The plurality of wirings includes a first light-transmitting wiring and a second light-transmitting wiring spaced apart from each other in a radial direction with reference to the center of the light-transmitting area, and The first light-transmitting hole formed in the first light-transmitting wire and the second light-transmitting hole formed in the second light-transmitting wire are configured not to overlap with each other in the radial direction.

14. The display device according to claim 1, wherein the wiring is touch wiring.

15. The display device according to claim 1, further comprising: A moisture penetration prevention structure with a predetermined height is provided on the substrate in the boundary region. The moisture penetration prevention structure includes a plurality of raised patterns spaced apart from each other.

16. The display device according to claim 15, wherein the moisture penetration prevention structure further includes a weir. The plurality of protrusion patterns include: Multiple first protruding patterns are disposed between the display area and the weir; and Multiple second protruding patterns are disposed between the weir and the light-transmitting area.

17. A display device, comprising: The display panel includes a display area, a light-transmitting area, and a boundary area surrounding the light-transmitting area; as well as sensor, The display panel includes: substrate; Circuit layer disposed on the substrate; A light-emitting element layer disposed on the circuit layer; An encapsulation layer disposed on the light-emitting element layer; A touch sensor layer disposed on the encapsulation layer; and An adhesive layer disposed on the touch sensor layer in: The adhesive layer includes a main body portion and a lens portion formed to protrude from the lower part of the main body portion. At least one of the multiple wires disposed in the boundary region has a first hole that overlaps with the sensor, and The sensor overlaps with the lens portion and the first aperture.

18. The display device according to claim 17, wherein: The sensor includes a first sensor overlapping the light-transmitting area and a second sensor overlapping the first aperture, and The second sensor is an infrared sensor.

19. The display device according to claim 17, wherein: The display panel also includes a black matrix disposed beneath the adhesive layer, and The black matrix has a second hole that overlaps with the first hole.

20. The display device according to claim 17, wherein: The display panel also includes a color filter layer disposed on the adhesive layer. The color filter layer includes color filters and a black matrix, and The black matrix of the color filter layer has a second hole that overlaps with the first hole.

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