Display device and electronic device comprising same

Abstract

Provided are a display device and an electronic device comprising same. The display device according to some embodiments of the present invention comprises: a substrate; a plurality of light-emitting pixel electrodes; a plurality of sensing pixel electrodes; a pixel definition layer; a plurality of light-emitting layers; a light sensing layer; a common electrode; an encapsulation layer; a first meta-lens disposed on the encapsulation layer and comprising a plurality of first nanostructures overlapping a plurality of light sensing areas in the thickness direction of the substrate; an intermediate layer disposed on the plurality of first nanostructures; a black matrix disposed in a non-light-emitting area between a plurality of light-emitting areas and the plurality of light sensing areas on the intermediate layer; a window member disposed on the black matrix and the intermediate layer; and a second meta-lens disposed on the window member and comprising a plurality of second nanostructures overlapping the plurality of light-emitting areas in the thickness direction of the substrate.

Description

Display device and electronic device including the same

[0001] The present invention relates to a display device and an electronic device including the same.

[0002] With the development of the information society, various types of display devices have been developed to display information. Display devices can provide specific images to users using light-emitting elements or collect biometric information, such as fingerprints and blood pressure, from users using light-sensing elements.

[0003] In providing images to users, it is important to increase light emission efficiency by increasing the amount of light emitted from light-emitting elements that exits the display device. Furthermore, to enhance the accuracy of biometric data collection, it is crucial to increase the amount of light incident on light-sensing elements. To this end, various methods are being studied to modify the light path by placing optical components within the display device.

[0004] The problem that the present invention aims to solve is to provide a display device that increases the amount of light incident on a light-sensing element and an electronic device including the same.

[0005] Another problem that the present invention aims to solve is to provide a display device that increases the amount of light emitted from a light-emitting region and an electronic device including the same.

[0006] The problems of the present invention are not limited to the technical problems mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art from the description below.

[0007] A display device according to an embodiment for solving the above problem comprises: a substrate; a plurality of light-emitting pixel electrodes disposed on one surface of the substrate; a plurality of sensing pixel electrodes disposed on one surface of the substrate and spaced apart from the plurality of light-emitting pixel electrodes; a pixel defining film that exposes a portion of each of the plurality of light-emitting pixel electrodes and the plurality of sensing pixel electrodes and defines a plurality of light-emitting regions and a plurality of light-sensing regions; a plurality of light-emitting layers disposed on the plurality of light-emitting pixel electrodes in the plurality of light-sensing regions; a light-sensing layer disposed on the plurality of sensing pixel electrodes in the plurality of light-sensing regions and configured to detect light reflected from a user; a common electrode disposed on the pixel defining film, the plurality of light-emitting layers, and the light-sensing layer; an encapsulation layer disposed on the common electrode and comprising at least one organic film and at least one inorganic film; a first metalens disposed on the encapsulation layer and comprising a plurality of first nanostructures that overlap with the plurality of light-sensing regions in the thickness direction of the substrate; an intermediate layer disposed on the plurality of first nanostructures; a black matrix disposed on the intermediate layer in a non-light-emitting region between the plurality of light-emitting regions and the plurality of light-sensing regions; and a window disposed on the black matrix and the intermediate layer. It includes a member, and a second metalens comprising a plurality of second nanostructures disposed on the window member and overlapping with the plurality of light-emitting regions in the thickness direction of the substrate.

[0008] The above plurality of first nanostructures may have a first height, a first width, and a first period.

[0009] The first height of each of the above plurality of first nanostructures may be the same.

[0010] The apparatus further includes a first color filter disposed in the light sensing region on the above-mentioned encapsulation layer, wherein the first height of each of the plurality of first nanostructures is 1 / 10 to 1 times the center wavelength of the first wavelength range transmitted by the first color filter, and the center wavelength may be defined as the wavelength of the light with the greatest intensity among the light transmitted by the first color filter.

[0011] Each of the above plurality of first nanostructures may have a first width greater than or equal to a first minimum width less than or equal to a first maximum width.

[0012] A first nanostructure having the first maximum width among the plurality of first nanostructures may be disposed at the center of the first metalens.

[0013] The plurality of first nanostructures can be arranged in descending order from the first maximum width to the first minimum width within the first period.

[0014] The first period may be the distance between the first nanostructures having the first maximum width among the plurality of first nanostructures.

[0015] The above first period may decrease from the center to the edge of the above first metalens.

[0016] The width of the first direction of the first metalens may be greater than the width of the first direction of the light-sensing area.

[0017] The plurality of second nanostructures may include first substructures disposed in a first light-emitting region configured to emit light of a first color among the plurality of light-emitting regions, second substructures disposed in a second light-emitting region configured to emit light of a second color among the plurality of light-emitting regions, and third substructures disposed in a third light-emitting region configured to emit light of a third color among the plurality of light-emitting regions.

[0018] The above first substructures may have a second height, a second width, and a second period.

[0019] It further includes a first color filter disposed in the first light-emitting region on the above-mentioned encapsulation layer, and the second height of each of the first substructures may be 1 / 10 to 1 times the center wavelength of the first wavelength range through which the first color filter passes.

[0020] The second substructures have a third height, a third width, and a third period, and the first substructures may be different from the second substructures.

[0021] It further includes a second color filter disposed in the second light-emitting region on the above-mentioned encapsulation layer, and the third height of each of the second substructures may be 1 / 10 to 1 times the center wavelength of the second wavelength range transmitted by the second color filter.

[0022] The third substructures have a fourth height, a fourth width, and a fourth period, and the third substructures may be different from the first substructures and the second substructures.

[0023] It further includes a third color filter disposed in the third light-emitting region on the above encapsulation layer, and the fourth height of each of the third substructures may be 1 / 10 to 1 times the center wavelength of the third wavelength range transmitted by the third color filter.

[0024] The width of the second metalens in the first direction, including the first substructures, in the thickness direction of the substrate may be greater than the width of the first direction of the first light-emitting region.

[0025] It may further include a plurality of inorganic insulating films disposed on the above-mentioned encapsulation layer, and touch electrodes disposed between the plurality of inorganic insulating films and forming mutual capacitance.

[0026] A display device of an electronic device including a display device according to an embodiment for solving the above problem comprises: a substrate; a plurality of light-emitting pixel electrodes disposed on one surface of the substrate; a plurality of sensing pixel electrodes disposed on one surface of the substrate and spaced apart from the plurality of light-emitting pixel electrodes; a pixel defining film that exposes a portion of each of the plurality of light-emitting pixel electrodes and the plurality of sensing pixel electrodes and defines a plurality of light-emitting regions and a plurality of light-sensing regions; a plurality of light-emitting layers disposed on the plurality of light-emitting pixel electrodes in the plurality of light-sensing regions; a light-sensing layer disposed on the plurality of sensing pixel electrodes in the plurality of light-sensing regions and configured to detect light reflected from a user; a common electrode disposed on the pixel defining film, the plurality of light-emitting layers and the light-sensing layer; an encapsulation layer disposed on the common electrode and comprising at least one organic film and at least one inorganic film; a first metalens disposed on the encapsulation layer and comprising a plurality of first nanostructures that overlap with the plurality of light-sensing regions in the thickness direction of the substrate; an intermediate layer disposed on the plurality of first nanostructures; a black matrix disposed on the intermediate layer in a non-light-emitting region between the plurality of light-emitting regions and the plurality of light-sensing regions; the black matrix and the intermediate layer It includes a window member disposed on the substrate, and a plurality of second nanostructures disposed on the window member and overlapping with the plurality of light-emitting regions in the thickness direction of the substrate.

[0027] Specific details of other embodiments are included in the detailed description and drawings.

[0028] According to a display device and an electronic device including the same according to some embodiments of the present invention, by providing a first metalens disposed between a plurality of color filters and a black matrix in a light-sensing region, light directed toward a non-luminous region can be refracted toward the light-sensing region. By doing so, the amount of light received in the light-sensing region can be increased, thereby improving the accuracy of the light-sensing element.

[0029] According to some embodiments of the present invention, a display device and an electronic device including the same provide a second metalens disposed on a window member in a light-emitting region, thereby enabling light that was not totally reflected from the window member and emitted to the outside of the display device to be emitted to the outside of the display device. This allows the light emission efficiency of the light-emitting element to be increased.

[0030] The effects according to the embodiments are not limited to those exemplified above, and a wider variety of effects are included in this specification.

[0031] FIG. 1 is a perspective view of a display device according to some embodiments of the present invention.

[0032] Figure 2 is a plan view showing an example of the display device of Figure 1.

[0033] Figure 3 is a side view showing an example of the display device of Figure 1.

[0034] FIG. 4 is a plan view exemplarily showing the light-emitting pixel, light-sensing pixel, various driving parts and various wiring of the display device of FIG. 1.

[0035] Figure 5 is a layout diagram showing an enlarged view of area A of Figure 2.

[0036] Figure 6 is a cross-sectional view of a display panel cut along I-I' of Figure 5.

[0037] FIG. 7 is a cross-sectional view illustrating the light-sensing region and the first metalens of FIG. 5.

[0038] FIG. 8 is a cross-sectional view illustrating the light-emitting region and the second metalens of FIG. 5.

[0039] FIG. 9 is an example diagram for explaining the first metalens and the second metalens of FIG. 5.

[0040] FIG. 10 is a diagram illustrating the relationship between the wavelength of light and the intensity (or strength) of light that has passed through the color filter of FIG. 5.

[0041] FIG. 11 is a perspective view of a display device according to some embodiments of the present invention.

[0042] FIG. 12 is a plan view showing an example of the display device of FIG. 11.

[0043] FIG. 13 is a side view showing another example of the display device of FIG. 11.

[0044] FIG. 14 is a layout diagram illustrating the touch sensing layer of FIG. 13 in an exemplary manner.

[0045] Figure 15 is a layout diagram showing an enlarged view of area B of Figure 14.

[0046] Figure 16 is a cross-sectional view taken along J-J' of Figure 15.

[0047] FIG. 17 is a block diagram of an electronic device including a display device according to some embodiments of the present invention.

[0048] FIG. 18 is an exemplary diagram of an electronic device including a display device according to some embodiments of the present invention.

[0049] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims.

[0050] When elements or layers are referred to as being "on" another element or layer, this includes cases where another layer or element is interposed directly on or in the middle of another element. Throughout the specification, the same reference numerals refer to the same components. Shapes, sizes, ratios, angles, numbers, etc., disclosed in the drawings for describing embodiments are exemplary and therefore the invention is not limited to the depicted details.

[0051] The features of each of the various embodiments of the present invention may be combined or combined with one another, either partially or wholly, and may technically enable various interlocking and operation. Each embodiment may be implemented independently of one another or may be implemented together in an associated relationship.

[0052] Specific embodiments will be described below with reference to the attached drawings.

[0053] FIG. 1 is a perspective view of a display device according to some embodiments of the present invention. FIG. 2 is a plan view showing an example of the display device of FIG. 1. FIG. 3 is a side view showing an example of the display device of FIG. 1.

[0054] Referring to FIGS. 1 to 3, a display device (10) according to one embodiment may be applied to portable electronic devices such as a mobile phone, a smartphone, a tablet PC, a mobile communication terminal, an electronic notebook, an e-book, a PMP (portable multimedia player), a navigation system, a UMPC (Ultra Mobile PC), etc. Alternatively, a display device (10) according to one embodiment may be applied to a television, a laptop, a monitor, an advertising board, or a display unit of the Internet of Things (IoT). Alternatively, a display device (10) according to one embodiment may be applied to a wearable device such as a smart watch, a watch phone, a glasses-type display, and a head-mounted display (HMD). Alternatively, a display device (10) according to one embodiment may be applied to a center information display (CID) placed on the instrument panel of a vehicle, the center fascia of a vehicle, the dashboard of a vehicle, a room mirror display replacing the side mirror of a vehicle, or a display placed on the back of the front seat as entertainment for the rear seat of a vehicle.

[0055] The display device (10) may be a light-emitting display device such as an organic light-emitting display device using an organic light-emitting diode (OLED), a quantum dot light-emitting display device including a quantum dot light-emitting layer, an inorganic light-emitting display device including an inorganic semiconductor, and a micro light-emitting display device using a micro or nano light-emitting diode (micro LED or nano LED). Hereinafter, the display device (10) is described mainly as being an organic light-emitting display device, but the present invention is not limited thereto.

[0056] The display device (10) includes a display panel (100), a display driving circuit (200), and a display circuit board (300).

[0057] The display panel (100) may be formed as a rectangular plane having a short side in a first direction (X-axis direction) and a long side in a second direction (Y-axis direction) that intersects the first direction (X-axis direction). The corner where the short side in the first direction (X-axis direction) and the long side in the second direction (Y-axis direction) meet may be formed rounded to have a predetermined curvature or formed at a right angle. The planar shape of the display panel (100) is not limited to a rectangle and may be formed as other polygons, circles, or ellipses. The display panel (100) may be formed flat, but is not limited thereto. For example, the display panel (100) includes a curved surface formed at the left and right ends, having a constant curvature or a changing curvature. In addition, the display panel (100) may be formed flexibly so that it can be bent, curved, folded, or rolled.

[0058] The display panel (100) includes a main area (MA) and a sub-area (SBA).

[0059] The main area (MA) includes a display area (DA) that displays an image and a non-display area (NDA) which is a surrounding area of ​​the display area (DA). The display area (DA) includes pixels (PX1 to PX4 in FIG. 5) that display an image. A sub-area (SBA) may protrude from one side of the main area (MA) in the opposite direction of the second direction (Y-axis direction).

[0060] In FIGS. 1 and 2, the sub-region (SBA) is illustrated as being unfolded, but the sub-region (SBA) can be bent as in FIG. 3, and in this case, it can be placed on the lower surface of the display panel (100). When the sub-region (SBA) is bent, it can overlap with the main region (MA) in the thickness direction (Z-axis direction) of the substrate (SUB). A display driving circuit (200) can be placed in the sub-region (SBA).

[0061] Additionally, the display panel (100) may include a substrate (SUB), a thin-film transistor layer (TFTL), a light-emitting element layer (EML), an encapsulation layer (TFEL), a color filter layer (CFL), and a light modulation layer (LML) as shown in FIG. 3.

[0062] A thin-film transistor layer (TFTL) may be disposed on a substrate (SUB). The thin-film transistor layer (TFTL) may be disposed in a main region (MA) and a sub-region (SBA). The thin-film transistor layer (TFTL) includes transistors (TRs of FIG. 6).

[0063] The light-emitting element layer (EML) may be disposed on the thin-film transistor layer (TFTL). The light-emitting element layer (EML) may be disposed in the display area (DA) of the main area (MA). The light-emitting element layer (EML) includes light-emitting elements disposed in light-emitting regions. Additionally, the light-emitting element layer (EML) includes light-sensing elements disposed in light-sensing regions.

[0064] The encapsulation layer (TFEL) may be disposed on the light-emitting element layer (EML). The encapsulation layer (TFEL) may be disposed in the display area (DA) and non-display area (NDA) of the main area (MA). The encapsulation layer (TFEL) comprises at least one inorganic film and at least one organic film for encapsulating the light-emitting element layer.

[0065] A color filter layer (CFL) may be disposed on an encapsulation layer (TFEL). In one embodiment, the color filter layer (CFL) may be disposed on a touch sensing layer (SENL in FIG. 16). The color filter layer (CFL) may be disposed in the display area (DA) and non-display area (NDA) of the main area (MA). The color filter layer (CFL) may be an anti-reflective member for reducing external light from being reflected from the metal wiring and metal electrodes of the display panel (100). The color filter layer (CFL) includes a plurality of color filters. For example, the color filter layer (CFL) includes a first color filter that transmits light in a first wavelength range, a second color filter that transmits light in a second wavelength range, and a third color filter that transmits light in a third wavelength range.

[0066] A light modulation layer (LML) may be disposed on the color filter layer (CFL). The light modulation layer (LML) may be disposed in the display area (DA) and non-display area (NDA) of the main area (MA). The light modulation layer (LML) may include an optical member to increase the light emission efficiency of light emitted from the light-emitting elements of the light-emitting element layer (EML). Additionally, the light modulation layer (LML) may include an optical member to increase the amount of light received by the light-sensing elements of the light-emitting element layer (EML).

[0067] The display driving circuit (200) can generate signals and voltages to drive the display panel (100). The display driving circuit (200) can be formed as an integrated circuit (IC) and attached to the display panel (100) using a COG (chip on glass) method, a COP (chip on plastic) method, or an ultrasonic bonding method, but is not limited thereto. For example, the display driving circuit (200) can be attached to the display circuit board (300) using a COF (chip on film) method.

[0068] A display circuit board (300) can be attached to one end of a sub-region (SBA) of a display panel (100). As a result, the display circuit board (300) can be electrically connected to the display panel (100) and the display driving circuit (200). The display panel (100) and the display driving circuit (200) can receive digital video data, timing signals, and driving voltages through the display circuit board (300). The display circuit board (300) may be a flexible printed circuit board (FPCB), a printed circuit board (PCB), or a flexible film such as a chip-on-film (COF).

[0069] As shown in FIGS. 1 to 3, in order to reduce the reflection of external light by the metal wiring and metal electrodes of the display panel (100), the display panel (100) includes a color filter layer (CFL) comprising color filters. As a result, there is no need to attach a separate anti-reflection member, such as a polarizer, to the display panel (100), thereby reducing the manufacturing cost of the display device (10). However, the present embodiment is not limited thereto, and an embodiment including a polarizer instead of a color filter layer (CFL) is also possible.

[0070] FIG. 4 is a plan view exemplarily showing the light-emitting pixel, light-sensing pixel, various driving parts and various wiring of the display device of FIG. 1.

[0071] Referring to FIG. 4, the display panel (100) may include a display area (DA) and a non-display area (NDA) positioned along the periphery or edge of the display area (DA). The display area (DA) may include a light-emitting pixel (PX), a light-sensing pixel (OPD), a power line (VL), a data line (DL), a read-out line (ROL), a gate line (GL), and a light-emitting control line (ECL).

[0072] Each of the plurality of light-emitting pixels (PX) can be connected to a gate line (GL), a light-emitting control line (ECL), a data line (DL), and a power line (VL). Each of the plurality of light-emitting pixels (PX) may include a plurality of transistors, light-emitting elements, and capacitors.

[0073] Each of the plurality of photodetectors (OPDs) may be connected to a gate line (GL), a power line (VL), and a read-out line (ROL). Each of the plurality of photodetectors (OPDs) may include a plurality of transistors and photodetectors. For example, the plurality of photodetectors (OPDs) may be used to derive biometric information, such as a user's fingerprint or pulse, by detecting light reflected from the user.

[0074] Gate lines (GL) can be extended in a first direction (X-axis direction) and can be spaced apart from each other in a second direction (Y-axis direction) that intersects the first direction (X-axis direction). The gate lines (GL) can sequentially supply gate signals to light-emitting pixels (PX) and light-sensing pixels (OPD).

[0075] The light emission control lines (ECLs) can be extended in a first direction (X-axis direction) and can be spaced apart from each other in a second direction (Y-axis direction). The light emission control lines (ECLs) can sequentially supply light emission signals to light emission pixels (PX).

[0076] Data lines (DL) can be extended in a second direction (Y-axis direction) and can be spaced apart from each other in a first direction (X-axis direction). The data lines (DL) can supply data voltage to light-emitting pixels (PX). The data voltage can determine the brightness of each light-emitting pixel (PX).

[0077] Power lines (VL) can be extended in a second direction (Y-axis direction) and can be spaced apart from each other in a first direction (X-axis direction). The power lines (VL) can supply power voltage to light-emitting pixels (PX) and light-sensing pixels (OPD). Here, the power voltage may be a driving voltage, a common voltage, an initialization voltage, a reference voltage, a bias voltage, or a reset voltage. The driving voltage may be a high potential voltage for driving the light-emitting pixel (PX), and the common voltage may be a low potential voltage for driving the light-emitting pixel (PX) and the light-sensing pixel (OPD).

[0078] Read-out lines (ROLs) can be extended in a second direction (Y-axis direction) and can be spaced apart from each other in a first direction (X-axis direction). The read-out lines (ROLs) can read out a sensing signal that detects light from photodetector pixels (OPDs).

[0079] A non-display area (NDA) may surround a display area (DA). The non-display area (NDA) may include a gate driver (610), a light emission control driver (620), fan-out lines (FL), a first gate control line (GSL1), and a second gate control line (GSL2).

[0080] Fan-out lines (FL) can be extended from the display driving circuit (200) to the display area (DA). The fan-out lines (FL) can supply data voltage received from the display driving circuit (200) to the data line (DL), supply power voltage received from the display driving circuit (200) to the power line (VL), and supply a sensing signal received from the read-out line (ROL) to the display driving circuit (200). Through this, the display driving circuit (200) can drive the light-emitting pixel (PX) and the light-sensing pixel (OPD).

[0081] The first gate control line (GSL1) may extend from the display driving circuit (200) to the gate driving unit (610). The first gate control line (GSL1) may supply a gate control signal received from the display driving circuit (200) to the gate driving unit (610).

[0082] The second gate control line (GSL2) can be extended from the display driving circuit (200) to the light emission control driving unit (620). The second gate control line (GSL2) can supply a light emission control signal received from the display driving circuit (200) to the light emission control driving unit (620).

[0083] The gate driver (610) may be positioned on one side outside the display area (DA) or on one side of the non-display area (NDA). The gate driver (610) may include a plurality of transistors that generate a gate signal based on a gate control signal.

[0084] The light emission control driver (620) may be positioned on the other side outside the display area (DA) or on the other side of the non-display area (NDA). The light emission control driver (620) may include a plurality of transistors that generate light emission signals based on a light emission control signal.

[0085] For example, the transistors of the gate driver (610) and the transistors of the light emission control driver (620) can be formed on the same layer as the transistors of each of the light-emitting pixels (PX). The gate driver (610) can supply gate signals to the gate lines (GL), and the light emission control driver (620) can supply light emission signals to the light emission control lines (ECL).

[0086] A sub-display area (SBA) may extend from one side of a non-display area (NDA). The sub-display area (SBA) may include a display driving circuit (200) and a pad portion (DP). The pad portion (DP) may be positioned adjacent to one edge of the sub-area (SBA) than the display driving circuit (200). The pad portion (DP) may be electrically connected to a display circuit board (300) through an anisotropic conductive film.

[0087] Figure 5 is a layout diagram showing an enlarged view of area A of Figure 2.

[0088] Referring to FIG. 5, the display panel (100) may include a plurality of light-emitting pixels (PX) and a plurality of light-sensing pixels (OPD).

[0089] For example, a plurality of light-emitting pixels (PX) may include first to fourth light-emitting pixels (PX1 to PX4). Each of the plurality of light-sensing pixels (OPD) may be positioned approximately in the center of each of the first to fourth light-emitting pixels (PX1 to PX4). Although FIG. 5 illustrates an example where the plurality of light-emitting pixels (PX) and the plurality of light-sensing pixels (OPD) correspond one-to-one, the present embodiment is not limited thereto. A single light-emitting pixel (PX) may correspond to a plurality of light-sensing pixels (OPD), or a plurality of light-emitting pixels (PX) may correspond to a single light-sensing pixel (OPD).

[0090] The first to fourth light-emitting pixels (PX1 to PX4) may be arranged adjacently in a first diagonal direction (DD1) and a second diagonal direction (DD2). The first diagonal direction (DD1) may be a direction that intersects the first direction (X-axis direction) and the second direction (Y-axis direction) on the plane formed by the first direction (X-axis direction) and the second direction (Y-axis direction). The second diagonal direction (DD2) may be a direction that intersects the first direction (X-axis direction), the second direction (Y-axis direction), and the first diagonal direction (DD1) on the plane formed by the first direction (X-axis direction) and the second direction (Y-axis direction). For example, the angle formed by the first diagonal direction (DD1) and the second diagonal direction (DD2) may be 90°, but the present embodiment is not limited thereto.

[0091] Each of the first to fourth light-emitting pixels (PX1 to PX4) may include light-emitting regions (EA1 to EA4). For example, each of the first to fourth light-emitting pixels (PX1 to PX4) may include a first light-emitting region (EA1), a second light-emitting region (EA2), a third light-emitting region (EA3), and a fourth light-emitting region (EA4). However, the present embodiment is not limited thereto, and the number of light-emitting regions included in a single light-emitting pixel (PX) may be varied.

[0092] The first light-emitting region (EA1) can emit light of a first color. The first color is red, and the peak wavelength of the first color light can be included in the wavelength range of approximately 600 nm to 750 nm.

[0093] The second light-emitting region (EA2) can emit light of a second color. The second color is green, and the peak wavelength of the light of the second color may be included in the wavelength band of approximately 500 nm to 570 nm.

[0094] The third light-emitting region (EA3) can emit light of a third color. The third color is blue, and the peak wavelength of the light of the third color may be included in the wavelength band of approximately 430 nm to 490 nm.

[0095] The fourth light-emitting region (EA4) can emit light of the second color, just like the second light-emitting region (EA2).

[0096] For example, the light-emitting regions (EA1–EA4) may be arranged in a Pentile® type. Pentile® is a registered trademark of Samsung Display. The first light-emitting region (EA1) may be spaced apart from the second light-emitting region (EA2) in the second diagonal direction (DD2). The first light-emitting region (EA1) may be spaced apart from the third light-emitting region (EA3) in the first direction (X-axis direction). The first light-emitting region (EA1) may be spaced apart from the fourth light-emitting region (EA4) in the first diagonal direction (DD1). The second light-emitting region (EA2) may be spaced apart from the third light-emitting region (EA3) in the first diagonal direction (DD1). The second light-emitting region (EA2) may be spaced apart from the fourth light-emitting region (EA4) in the second direction (Y-axis direction). The third light-emitting region (EA3) can be spaced apart from the fourth light-emitting region (EA4) in the second diagonal direction (DD2).

[0097] Although the drawings illustrate the planar shape of the light-emitting regions (EA1~EA4) as a circular example, the present embodiment is not limited thereto. The planar shape of the light-emitting regions (EA1~EA4) can be implemented in various modified forms, such as elliptical or rectangular.

[0098] The areas of the light-emitting regions (EA1 to EA4) may differ from one another. For example, the area of ​​the first light-emitting region (EA1) may be larger than the area of ​​the second light-emitting region (EA2) and smaller than the area of ​​the third light-emitting region (EA3). The area of ​​the second light-emitting region (EA2) may be equal to the area of ​​the fourth light-emitting region (EA4). However, the present embodiment is not limited thereto, and the size of each light-emitting region (EA1 to EA4) may be freely adjustable.

[0099] A second metalens (ML2_EA1~ML2_EA4) may be disposed in the light-emitting regions (EA1~EA4). The second metalens (ML2_EA1~ML2_EA4) may include a plurality of second nanostructures. The second metalens (ML2_EA1~ML2_EA4) may include a first sub-lens (ML2_EA1) disposed in the first light-emitting region (EA1), a second sub-lens (ML2_EA2) disposed in the second light-emitting region (EA2), a third sub-lens (ML2_EA3) disposed in the third light-emitting region (EA3), and a fourth sub-lens (ML2_EA4) disposed in the fourth light-emitting region (EA4).

[0100] The first sub-lens (ML2_EA1) may overlap with the first light-emitting region (EA1) in the third direction (Z-axis direction). The planar shape of the first sub-lens (ML2_EA1) may follow the planar shape of the first light-emitting region (EA1). For example, the planar shape of the first sub-lens (ML2_EA1) and the planar shape of the first light-emitting region (EA1) may be circular. The size of the first sub-lens (ML2_EA1) may be larger than or equal to the size of the first light-emitting region (EA1). For example, the maximum length of the first sub-lens (ML2_EA1) in the first direction (X-axis direction) may be larger than or equal to the maximum length of the first light-emitting region (EA1) in the first direction (X-axis direction). The maximum length of the first sub-lens (ML2_EA1) in the second direction (Y-axis direction) may be larger than or equal to the maximum length of the first light-emitting region (EA1) in the second direction (Y-axis direction). For the first diagonal direction (DD1) and the second diagonal direction (DD2), the maximum length of the first sub-lens (ML2_EA1) may be greater than or equal to the maximum length of the first light-emitting region (EA1).

[0101] The second sub-lens (ML2_EA2) may overlap with the second light-emitting region (EA2) in the third direction (Z-axis direction). The planar shape of the second sub-lens (ML2_EA2) may follow the planar shape of the second light-emitting region (EA2). For example, the planar shape of the second sub-lens (ML2_EA2) and the planar shape of the second light-emitting region (EA2) may be circular. The size of the second sub-lens (ML2_EA2) may be greater than or equal to the size of the second light-emitting region (EA2). For example, the maximum length of the second sub-lens (ML2_EA2) in the first direction (X-axis direction) may be greater than or equal to the maximum length of the second light-emitting region (EA2) in the first direction (X-axis direction). The maximum length of the second sub-lens (ML2_EA2) in the second direction (Y-axis direction) may be greater than or equal to the maximum length of the second light-emitting region (EA2) in the second direction (Y-axis direction). For the first diagonal direction (DD1) and the second diagonal direction (DD2), the maximum length of the second sub-lens (ML2_EA2) may be greater than or equal to the maximum length of the second light-emitting region (EA2).

[0102] The third sub-lens (ML2_EA3) may overlap with the third light-emitting region (EA3) in the third direction (Z-axis direction). The planar shape of the third sub-lens (ML2_EA3) may follow the planar shape of the third light-emitting region (EA3). For example, the planar shape of the third sub-lens (ML2_EA3) and the planar shape of the third light-emitting region (EA3) may be circular. The size of the third sub-lens (ML2_EA3) may be greater than or equal to the size of the third light-emitting region (EA3). For example, the maximum length of the third sub-lens (ML2_EA3) in the first direction (X-axis direction) may be greater than or equal to the maximum length of the third light-emitting region (EA3) in the first direction (X-axis direction). The maximum length of the third sub-lens (ML2_EA3) in the second direction (Y-axis direction) may be greater than or equal to the maximum length of the third light-emitting region (EA3) in the second direction (Y-axis direction). For the first diagonal direction (DD1) and the second diagonal direction (DD2), the maximum length of the third sub-lens (ML2_EA3) may be greater than or equal to the maximum length of the third light-emitting region (EA3).

[0103] The fourth sub-lens (ML2_EA4) may overlap with the fourth light-emitting region (EA4) in the third direction (Z-axis direction). The planar shape of the fourth sub-lens (ML2_EA4) may follow the planar shape of the fourth light-emitting region (EA4). For example, the planar shape of the fourth sub-lens (ML2_EA4) and the planar shape of the fourth light-emitting region (EA4) may be circular. The size of the fourth sub-lens (ML2_EA4) may be greater than or equal to the size of the fourth light-emitting region (EA4). For example, the maximum length of the fourth sub-lens (ML2_EA4) in the first direction (X-axis direction) may be greater than or equal to the maximum length of the fourth light-emitting region (EA4) in the first direction (X-axis direction). The maximum length of the fourth sub-lens (ML2_EA4) in the second direction (Y-axis direction) may be greater than or equal to the maximum length of the fourth light-emitting region (EA4) in the second direction (Y-axis direction). For the first diagonal direction (DD1) and the second diagonal direction (DD2), the maximum length of the fourth sub-lens (ML2_EA4) may be greater than or equal to the maximum length of the fourth light-emitting region (EA4).

[0104] A plurality of second nanostructures may include first to fourth substructures. A first sublens (ML2_EA1) may include first substructures. A second sublens (ML2_EA2) may include second substructures. A third sublens (ML3_EA3) may include third substructures. A fourth sublens (ML4_EA4) may include fourth substructures.

[0105] The first substructures may be formed to be suitable for light of a first color emitted in a first light-emitting region (EA1). The second substructures may be formed to be suitable for light of a second color emitted in a second light-emitting region (EA2). The third substructures may be formed to be suitable for light of a third color emitted in a third light-emitting region (EA3). The fourth substructures may be formed to be suitable for light of a second color emitted in a fourth light-emitting region (EA4). Accordingly, the second substructures and the fourth substructures may be formed substantially identically. The specific shapes of the first substructure, the second substructure, and the third substructure may differ from one another.

[0106] Each of the plurality of light-sensing pixels (OPDs) may include a light-sensing area (RA). The light-sensing area (RA) may detect light reflected from a user. The light-sensing area (RA) may be surrounded by light-emitting areas (EA1 to EA4). For example, the light-sensing area (RA) may be positioned in the middle of the light-emitting areas (EA1 to EA4). The light-sensing area (RA) may be positioned between the first light-emitting area (EA1) and the third light-emitting area (EA3) in a first direction (X-axis direction). The light-sensing area (RA) may be positioned between the second light-emitting area (EA2) and the fourth light-emitting area (EA4) in a second direction (Y-axis direction).

[0107] The light-sensing regions (RA) may be arranged spaced apart from each other with at least one of the light-emitting regions (EA1 to EA4) in between. For example, the light-sensing regions (RA) may be arranged spaced apart from each other in a first direction (X-axis direction) with the first light-emitting region (EA1) and the third light-emitting region (EA3) in between. The light-sensing regions (RA) may be arranged spaced apart from each other in a second direction (Y-axis direction) with the second light-emitting region (EA2) and the fourth light-emitting region (EA4) in between.

[0108] Although the drawings illustrate the planar shape of the light-sensing regions (RA) as a circular example, the present embodiment is not limited thereto. The planar shape of the light-sensing regions (RA) can be implemented in various modified forms, such as elliptical or rectangular.

[0109] A first metalens (ML1) may be disposed in the light-sensing regions (RA). The first metalens (ML1) may include a plurality of first nanostructures. The first metalens (ML1) may overlap with the light-sensing region (RA) in a third direction (Z-axis direction). The planar shape of the first metalens (ML1) may follow the planar shape of the light-sensing region (RA). For example, if the planar shape of the light-sensing region (RA) is circular, the planar shape of the first metalens (ML1) may also be circular. The size of the first metalens (ML1) may be greater than or equal to the size of the light-sensing region (RA). For example, the maximum length of the first metalens (ML1) in the first direction (X-axis direction) may be greater than or equal to the maximum length of the light-sensing region (RA) in the first direction (X-axis direction). The maximum length of the first metalens (ML1) in the second direction (Y-axis direction) may be greater than or equal to the maximum length of the light-sensing area (RA) in the second direction (Y-axis direction). For the first diagonal direction (DD1) and the second diagonal direction (DD2), the maximum length of the first metalens (ML1) may also be greater than or equal to the maximum length of the light-sensing area (RA).

[0110] Figure 6 is a cross-sectional view of a display panel cut along I-I' of Figure 5.

[0111] Referring to FIG. 6, the display panel (100) may include a substrate (SUB), a thin-film transistor layer (TFTL), a light-emitting element layer (EML), an encapsulation layer (TFEL), a color filter layer (CFL), and a light modulation layer (LML).

[0112] The substrate (SUB) may be made of insulating materials such as glass, quartz, or polymer resin. Alternatively, the substrate (SUB) may include a metal material. The substrate (SUB) may be a rigid substrate or a flexible substrate capable of bending, folding, rolling, etc. If the substrate (SUB) is a flexible substrate, it may be formed of polyimide (PI), but is not limited thereto.

[0113] A thin film transistor layer (TFTL) may be disposed on a substrate (SUB). The thin film transistor layer (TFTL) may include thin film transistors (TR) for each of the light-emitting pixels and the sensing pixels, a connecting electrode (CE), and a plurality of insulating films.

[0114] Specifically, the buffer film (BF) may be disposed on a substrate (SUB). The buffer film (BF) may be composed of a plurality of inorganic films that are alternately stacked. For example, the buffer film (BF) may be formed as a multilayer film in which one or more inorganic films among a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, and an aluminum oxide layer are alternately stacked.

[0115] The active layer of each thin-film transistor (TR) can be placed on a buffer film (BF). The active layer includes a channel (TCH), a source electrode (TS), and a drain electrode (TD).

[0116] A gate insulating film (110) may be disposed on the active layer and the buffer film (BF). The gate insulating film (110) may be formed of an inorganic insulating film, for example, a silicon nitride film (SiNx), a silicon oxide film (SiOx), a silicon nitride oxide film (SiON), a titanium oxide film (TiOx), or an aluminum oxide film (AlOx).

[0117] A gate electrode (TG) of a transistor (TR) may be disposed on the gate insulating film (110). The gate electrode (TG) may overlap with the channel (TCH) in a third direction (Z-axis direction). The gate electrode (TG) may be formed as a single layer or a multilayer made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0118] An interlayer insulating film (130) may be disposed on the gate electrode (TG) and the gate insulating film (110) of the transistor (TR). The interlayer insulating film (130) may be formed of an inorganic film, for example, a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer. The interlayer insulating film (130) may be formed of a plurality of inorganic films.

[0119] A first source metal layer may be disposed on the interlayer insulating film (130). The first source metal layer includes a connecting electrode (CE). The connecting electrode (CE) may be connected to the drain electrode (TD) of the transistor (TR) through a first contact hole (CNT1) penetrating the gate insulating film (110) and the interlayer insulating film (130). The connecting electrode (CE) may be formed as a single layer or a multilayer made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0120] A protective film (150) that flattens the step difference caused by the transistor (TR) and protects the transistor (TR) may be disposed on the first source metal layer and the interlayer insulating film (130). The protective film (150) may be formed from an organic film such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin.

[0121] A light-emitting element layer (EML) comprising a light-emitting element (LEL), a light-sensing pixel (OPD), and a pixel defining layer (190) may be disposed on the protective film (150). Each of the light-emitting elements (LEL) includes a pixel electrode (171), a light-emitting layer (172), and a common electrode (173). Each of the light-sensing pixels (OPD) includes a light-sensing electrode (PSE), a light-sensing layer (PSL), and a common electrode (173).

[0122] Specifically, a pixel electrode layer may be disposed on the protective film (150). The pixel electrode layer includes a pixel electrode (171) and a light-sensing electrode (PSE). The pixel electrode (171) and the light-sensing electrode (PSE) may each be connected to a connecting electrode (CE) through a second contact hole (CNT2) penetrating the protective film (150). In a top emission structure that emits light in the direction of a common electrode (173) with respect to a light-emitting layer (172), the pixel electrode (171) may be formed as a single layer of molybdenum (Mo), titanium (Ti), copper (Cu), or aluminum (Al), or may be formed as a stacked structure of aluminum and titanium (Ti / Al / Ti), a stacked structure of aluminum and ITO (ITO / Al / ITO), an APC alloy, and a stacked structure of APC alloy and ITO (ITO / APC / ITO) to increase reflectivity. The APC alloy is an alloy of silver (Ag), palladium (Pd), and copper (Cu). The light-sensing electrode (PSE) can be formed in the same way as the pixel electrode (171).

[0123] A pixel defining film (190) may be disposed on a portion of the pixel electrode (171) and the light-sensing electrode (PSE) and on the protective film (150). The pixel defining film (190) serves to define the light-emitting regions (EA1~EA4) of the light-emitting pixels and the light-sensing regions (RA) of the sensing pixels. The pixel defining film (190) may be formed to expose a portion of the pixel electrode (171) and the light-sensing electrode (PSE) on the protective film (150). The pixel defining film (190) may cover the edges of the pixel electrode (171) and the light-sensing electrode (PSE). The pixel defining film (190) may be formed from an organic film such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin.

[0124] A light-emitting layer (172) may be disposed on the pixel electrode (171), and a light-sensing layer (PSL) may be disposed on the light-sensing electrode (PSE). The light-emitting layer (172) may be an organic light-emitting layer containing an organic material. In this case, the light-emitting layer (172) may include a hole transporting layer, an organic light-emitting layer, and an electron transporting layer. When a predetermined voltage is applied to the pixel electrode through the thin-film transistor (TR) of the thin-film transistor layer (TFTL) and a cathode voltage is applied to the common electrode (173), holes and electrons move to the organic light-emitting layer (172) through the hole transporting layer and the electron transporting layer, respectively, and combine with each other in the organic light-emitting layer to emit light. The pixels of the light-emitting element layer (EML) may be disposed in a display area (DA).

[0125] The light sensing layer (PSL) may contain an organic material. The light sensing layer (PSL) may generate photocharges in proportion to the incident light. At this time, the incident light may be light emitted from the light-emitting layer (172) and reflected back in, or it may be light provided from the outside independently of the light-emitting layer (172). The charge generated and accumulated in the light sensing layer (PSL) can be converted into an electrical signal required for sensing.

[0126] The photosensitive layer (PSL) may include an electron donor material and an electron acceptor material. The electron donor material may generate a donor ion in response to light, and the electron acceptor material may generate an acceptor ion in response to light. When the photosensitive layer (PSL) is formed of an organic material, the electron donor material may include compounds such as subphthalocyanine (SubPc) and dibutylphosphate (DBP), but is not limited thereto. The electron acceptor may include compounds such as fullerene, fullerene derivatives, and perylene diimide, but is not limited thereto.

[0127] When the photosensitive layer (PSL) is formed of an organic material, a hole injecting layer and a hole transporting layer may be disposed below the photosensitive layer (PSL), and an electron injecting layer and an electron transporting layer may be stacked above it. The hole injecting layer, the hole transporting layer, the electron injecting layer, and the electron transporting layer may each be a single layer or a multilayer containing an organic material.

[0128] When the photosensitive layer (PSL) is formed of an inorganic material, the photosensitive pixel (OPD) may be a pn-type or pin-type phototransistor. For example, the photosensitive layer (PSL) may have a structure in which an N-type semiconductor layer, an I-type semiconductor layer, and a P-type semiconductor layer are sequentially stacked.

[0129] A common electrode (173) may be disposed on the pixel defining layer (190), the light-emitting layer (172), and the light-sensing layer (PSL). The common electrode (173) may be formed to cover the light-emitting layer (172) and the light-sensing layer (PSL). The common electrode (173) may be a common layer formed commonly in the light-emitting regions (EA1~EA4) and the light-sensing regions (RA).

[0130] An encapsulation layer (TFEL) may be disposed on the light-emitting element layer (EML). The encapsulation layer (TFEL) may include a first inorganic encapsulation layer (TFE1) and a second inorganic encapsulation layer (TFE3) that perform the function of preventing oxygen or moisture from penetrating into the light-emitting element layer (EML). The first inorganic encapsulation layer (TFE1) and the second inorganic encapsulation layer (TFE3) may be a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer, but are not limited thereto.

[0131] Additionally, the encapsulation layer (TFEL) may include an organic encapsulation layer (TFE2) that serves to protect the light-emitting element layer (EML) from foreign substances such as dust. The organic encapsulation layer (TFE2) may be disposed between the first inorganic encapsulation layer (TFE1) and the second inorganic encapsulation layer (TFE3). The organic encapsulation layer (TFE2) may be an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin, but is not limited thereto.

[0132] The encapsulation layer (TFEL) can be placed in both the display area (DA) and the non-display area (NDA). Specifically, the encapsulation layer (TFEL) can be placed to cover the light-emitting element layer (EML) of the display area (DA) and the non-display area (NDA), and to cover the thin-film transistor layer (TFTL) of the non-display area (NDA).

[0133] A color filter layer (CFL) may be disposed on the encapsulation layer (TFEL). The drawing illustrates a second color filter (CF2) that transmits light of the second color in a second light-emitting region (EA2) and a fourth light-emitting region (EA4) that emit light of the second color. A first color filter (CF1) that transmits light of the first color may be disposed in the first light-emitting region (EA1), and a third color filter (CF3) that transmits light of the third color may be disposed in the third light-emitting region (EA3). Through this, light of the first color emitted from the first light-emitting region (EA1) can pass through the first color filter (CF1) and proceed to the outside of the display device (10), and light of the second color emitted from the second light-emitting region (EA2) can pass through the second color filter (CF2) and proceed to the outside of the display device (10). The third color light emitted from the third light-emitting region (EA3) can pass through the third color filter (CF3) and proceed to the outside of the display device (10), and the second color light emitted from the fourth light-emitting region (EA4) can pass through the second color filter (CF2) and proceed to the outside of the display device (10).

[0134] A plurality of color filters may be disposed in the non-luminous region between the light-emitting regions (EA1~EA4) and the light-sensing regions (RA). The non-luminous region may overlap with the pixel defining film (190) in the third direction (Z-axis direction). Although the drawing illustrates the stacking of the third color filter (CF3), the first color filter (CF1), and the second color filter (CF2) in the non-luminous region in sequence, the order in which the first to third color filters (CF1~CF3) are stacked may be modified. In the non-luminous region, the plurality of color filters (CF1~CF3) may block light.

[0135] The first color filter (CF1) can transmit light of the first color (e.g., red light). The first color filter (CF1) can transmit light included in the wavelength range of approximately 600 nm to 750 nm.

[0136] The second color filter (CF2) can transmit light of the second color (e.g., green light). The second color filter (CF2) can transmit light included in the wavelength range of approximately 500 nm to 570 nm.

[0137] The third color filter (CF3) can transmit light of the third color (e.g., blue light). The third color filter (CF3) can transmit light included in the wavelength range of approximately 430 nm to 490 nm.

[0138] A first flattening layer (OC1) may be disposed on the color filters (CF1~CF3). The first flattening layer (OC1) can flatten the step difference caused by the color filters (CF1~CF3) of the color filter layer (CFL). The first flattening layer (OC1) may be formed from an organic film such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin.

[0139] A first metalens (ML1) may be disposed on the first flattening layer (OC1). The first metalens (ML1) may refract light directed toward a non-emissive region toward a light-sensing region (RA), thereby increasing the amount of light received by the light-sensing region (RA). The first metalens (ML1) may overlap with the light-sensing region (RA) in a third direction (Z-axis direction). The width (W_ML1) of the first metalens (ML1) in the second direction (Y-axis direction) may be greater than the width of the light-sensing region (RA) in the second direction (Y-axis direction). A portion of the first metalens (ML1) may overlap with a plurality of color filters (CF1~CF3) in the third direction (Z-axis direction).

[0140] The first metalens (ML1) may include inorganic materials such as silicon nitride, silicon oxide, titanium oxide, metallic materials such as gold (Au) or silver (Ag), or organic materials such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, or polyimide resin. If the first metalens (ML1) includes a metallic material, the thickness of the metallic material may be formed to be 200 nm or less to have a predetermined transmittance. For example, the refractive index of the first metalens (ML1) may be approximately 1.4 to 1.6.

[0141] An intermediate layer (IOL) may be disposed on the first planarization layer (OC1) and the first metalens (ML1). The intermediate layer (IOL) may be formed of an inorganic film, for example, a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer. The intermediate layer (IOL) may be formed of a plurality of inorganic films.

[0142] A black matrix (BM) may be placed on the intermediate layer (IOL). The black matrix (BM) may be formed using a material that absorbs visible light, such as a metal material, a pigment, or a resin material containing a dye. The black matrix (BM) can prevent color mixing between each pixel (PX) by blocking light from the light-emitting element (LEL). The black matrix (BM) may overlap with the pixel defining film (190) in a third direction (Z-axis direction).

[0143] The black matrix (BM) can define a light-sensing hole (H_OPD) that overlaps with a light-sensing region (RA). The width of the light-sensing hole (H_OPD) in the second direction (Y-axis direction) may be smaller than the width (W_ML1) of the first metalens (ML1) in the second direction (Y-axis direction). A portion of the black matrix (BM) may overlap with the edge of the first metalens (ML1) in the third direction (Z-axis direction).

[0144] A second flattening layer (OC2) may be disposed on the black matrix (BM) and the intermediate layer (IOL). The second flattening layer (OC2) can flatten the step difference caused by the black matrix (BM). The second flattening layer (OC2) may be formed from an organic film such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin.

[0145] A window member (WN) may be disposed on the second flattening layer (OC2). The window member (WN) may be attached to the second flattening layer (OC2) by a transparent adhesive member such as an optically clear adhesive (OCA) film or an optically clear resin (OCR). The window member (WN) may be an inorganic material such as glass, or an organic material such as plastic or polymer material.

[0146] A second metalens (ML2) may be placed on the window member (WN). The second metalens (ML2) can emit light to the outside of the display device (10) that was trapped inside the display device (10) by total reflection from the window member (WN).

[0147] The second metalens (ML2) may include a first sub-lens (ML2_EA1) placed in a first light-emitting region (EA1), a second sub-lens (ML2_EA2) placed in a second light-emitting region (EA2), a third sub-lens (ML2_EA3) placed in a third light-emitting region (EA3), and a fourth sub-lens (ML2_EA4) placed in a fourth light-emitting region (EA4).

[0148] The size of the first sub-lens (ML2_EA1) may be greater than or equal to the size of the first light-emitting region (EA1). The size of the second sub-lens (ML2_EA2) may be greater than or equal to the size of the second light-emitting region (EA2). The size of the third sub-lens (ML2_EA3) may be greater than or equal to the size of the third light-emitting region (EA3). The size of the fourth sub-lens (ML2_EA4) may be greater than or equal to the size of the fourth light-emitting region (EA4).

[0149] The second metalens (ML2) may include inorganic materials such as silicon nitride, silicon oxide, titanium oxide, metallic materials such as gold (Au) or silver (Ag), or organic materials such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, or polyimide resin. If the second metalens (ML2) includes a metallic material, the thickness of the metallic material may be formed to be 200 nm or less to have a predetermined transmittance. The refractive index of the second metalens (ML2) may be similar to that of the window member (WN). For example, the refractive index of the second metalens (ML2) may be approximately 1.4 to 1.6.

[0150] FIG. 7 is a cross-sectional view illustrating the light-sensing region and the first metalens of FIG. 5. Parts that overlap with the above description are omitted or simplified, and the differences are explained in detail.

[0151] Referring to FIG. 7, in a conventional display device, some of the light incident from the outside into the display device (10) proceeded to a non-emissive region. For example, in a conventional display device, some of the light incident from the outside into the display device (10) proceeded toward a plurality of color filters (CF1~CF3) such as the first light path (LP1). Accordingly, there was light that did not proceed to the light detection region (RA) even though it passed through the light detection hole (H_OPD).

[0152] A display device (10) according to some embodiments of the present invention may be provided with a first metalens (ML1) disposed between a color filter layer (CFL) and a black matrix (BM). Through this, light traveling toward a plurality of color filters (CF1 to CF3) can be refracted into a light detection area (RA) such as a second light path (LP2). Accordingly, the display device (10) of the present invention can effectively increase the amount of light received in the light detection area (RA).

[0153] FIG. 8 is a cross-sectional view illustrating the light-emitting region and the second metalens of FIG. 5. Parts that overlap with the above description are omitted or simplified, and the explanation will focus on the differences.

[0154] Referring to FIG. 8, in a conventional display device, light was not emitted from the window member (WN) to the outside due to a difference in refractive index and was totally reflected as in the third light path (LP3). Because of this, there was a limitation in that the light emitted from the light-emitting element (LEL) could not be emitted to the outside of the display device, resulting in reduced light emission efficiency.

[0155] A display device (10) according to some embodiments of the present invention may have a second metalens (ML2) disposed on a window member (WN) in light-emitting regions (EA1 to EA4). Since the refractive index of the second metalens (ML2) is similar to that of the window member (WN), light that was totally reflected from the window member (WN) into the interior of the display device (10) can be emitted to the exterior of the display device (10) through a fourth light path (LP4). Accordingly, the display device (10) of the present invention can effectively increase the light emission efficiency of light emitted from a light-emitting element (LEL).

[0156] FIG. 9 is an example diagram for explaining the first metalens and the second metalens of FIG. 5.

[0157] In this drawing, the first metalens (ML1) is described as an example, but the first to fourth sub-lenses (ML2_EA1~ML2_EA4) of the second metalens (ML2) can also be formed in the same way.

[0158] Referring to FIG. 9, the first metalens (ML1) may include a plurality of first nanostructures. The plurality of first nanostructures may have a first height, a first width, and a first period.

[0159] For convenience of explanation, the following description will be given as an example where the first height of a plurality of first nanostructures is all the same as h1. However, the present embodiment is not limited thereto, and the first height of each of the plurality of first nanostructures may be modified, such as by changing in a specific pattern.

[0160] The first height (h1) may be 1 / 10 to 1 times the center wavelength of the second wavelength range transmitted by the second color filter (CF2). This is so that the light that can pass through the second color filter (CF2) is refracted through the first metalens (ML1) into the light detection region (RA) because the first metalens (ML1) overlaps with the second color filter (CF2) in the third direction (Z-axis direction).

[0161] As another example, when the first metalens (ML1) overlaps with the first color filter (CF1) in the third direction (Z-axis direction), the first height (h1) may be 1 / 10 to 1 times the center wavelength of the first wavelength range transmitted by the first color filter (CF1).

[0162] As another example, when the first metalens (ML1) overlaps with the third color filter (CF3) in the third direction (Z-axis direction), the first height (h1) may be 1 / 10 to 1 times the center wavelength of the third wavelength range transmitted by the third color filter (CF3).

[0163] The wavelength range and center wavelength will be described later with reference to Fig. 10.

[0164] The first width of each of the plurality of first nanostructures may be greater than or equal to the first minimum width (w1min) and less than or equal to the first maximum width (w1max). The first minimum width (w1) may be 1 / 10 times the center wavelength of the second wavelength range transmitted by the second color filter (CF2) that overlaps the first metalens (ML1) in the third direction (Z-axis direction). The first maximum width (w1max) may be 1 times the center wavelength of the second wavelength range.

[0165] A first central nanostructure (ns1_maxC) having a first maximum width (w1max) may be disposed at the center of the first metalens (ML1). Multiple first nanostructures may be disposed in descending order from the first maximum width (w1max) to the first minimum width (w1min) in the second direction (Y-axis direction) relative to the first central nanostructure (ns1_maxC).

[0166] A first maximum nanostructure (ns1_max) having a first maximum width (w1max) may be disposed adjacent to a first minimum nanostructure (ns1_min) having a first minimum width (w1min). The distance between the first central nanostructure (ns1_maxC) and the first maximum nanostructure (ns1_max) may be a first maximum period (p1ar, p1al).

[0167] Multiple first nanostructures may be repeatedly arranged in descending order from the first maximum width (w1max) to the first minimum width (w1min) in the first direction (X-axis direction) and the second direction (Y-axis direction) based on the first maximum nanostructure (ns1_max). At this time, the distance between the first maximum nanostructures (ns1_max) having the first maximum width (w1max) may be the first period. The first period may decrease from the center to the edge of the first metalens (ML1). Specifically, the number of first nanostructures included within the first period may decrease from the center to the edge of the first metalens (ML1).

[0168] For example, the number of first nanostructures placed within the first maximum period (p1ar, p1al) may be four. The number of first nanostructures placed within the first intermediate period (p1br, p1bl) adjacent to the first maximum period (p1ar, p1al) may be three. The first nanostructures placed following the first intermediate period (p1br, p1bl) may include only two nanostructures: the first maximum nanostructure (ns1_max) and the first minimum nanostructure (ns1_min). In this way, the first period may decrease from the center to the edge of the first metalens (ML1).

[0169] The second metalens (ML2) may include first substructures disposed in a first light-emitting region (EA1), second substructures disposed in a second light-emitting region (EA2), third substructures disposed in a third light-emitting region (EA3), and fourth substructures disposed in a fourth light-emitting region (EA4). In this case, the fourth substructures may be formed to be substantially identical to the second substructures. Accordingly, a description of the fourth substructures is omitted.

[0170] The first substructures may have a second height, a second width, and a second period. The second height of each of the first substructures may be 1 / 10 to 1 times the center wavelength of the first wavelength range transmitted by the first color filter (CF1). This is to effectively refract the light of the first color transmitted from the first color filter (CF1).

[0171] The second width of each of the first substructures may have a value greater than or equal to the second minimum width and less than or equal to the second maximum width. The second minimum width may be 1 / 10 times the center wavelength of the first wavelength range, and the second maximum width may be 1 times the center wavelength of the first wavelength range. The second period may decrease from the center of the first sublens (ML2_EA1) to the edge. The number of first substructures included within the second period may decrease from the center of the first sublens (ML2_EA1) to the edge.

[0172] The second substructures may have a third height, a third width, and a third period. The third height of each of the second substructures may be 1 / 10 to 1 times the center wavelength of the second wavelength range transmitted by the second color filter (CF2). This is to effectively refract the second color light transmitted from the second color filter (CF2).

[0173] The third width of each of the second substructures may have a value greater than or equal to the third minimum width and less than or equal to the third maximum width. The third minimum width may be 1 / 10 times the center wavelength of the second wavelength range, and the third maximum width may be 1 times the center wavelength of the second wavelength range. The third period may decrease from the center of the second sublens (ML2_EA2) to the edge. The number of second substructures included within the third period may decrease from the center of the second sublens (ML2_EA2) to the edge.

[0174] The third substructures may have a fourth height, a fourth width, and a fourth period. The fourth height of each of the third substructures may be 1 / 10 to 1 times the center wavelength of the third wavelength range transmitted by the third color filter (CF3). This is to effectively refract the third color light transmitted from the third color filter (CF3).

[0175] The fourth width of each of the third substructures may have a value greater than or equal to the fourth minimum width and less than or equal to the fourth maximum width. The fourth minimum width may be 1 / 10 times the center wavelength of the third wavelength range, and the fourth maximum width may be 1 times the center wavelength of the third wavelength range. The fourth period may decrease from the center of the third sub-lens (ML2_EA3) toward the edge. The number of third substructures included within the fourth period may decrease from the center of the third sub-lens (ML2_EA3) toward the edge. The fourth substructures may be substantially identical to the second substructures. Therefore, a description of the fourth substructures is omitted.

[0176] FIG. 10 is a diagram illustrating the relationship between the wavelength of light and the intensity (or strength) of light that has passed through the color filter of FIG. 5.

[0177] Referring to FIG. 10, each of the color filters (CF1~CF3) may have a different transmittance depending on the wavelength. Each of the color filters (CF1~CF3) may have a maximum transmittance with respect to the center wavelength (λc). That is, each of the color filters (CF1~CF3) may have a maximum intensity (I_max) of transmitted light at the center wavelength (λc). At this time, the center wavelength (λc) may be included in the wavelength band of the first wavelength (λ1) to the second wavelength (λ2). The first wavelength (λ1) and the second wavelength (λ2) may be wavelengths where the intensity of transmitted light for each of the color filters (CF1~CF3) is a reference intensity (I0).

[0178] For example, in the case of a first color filter (CF1) that transmits red light, the first wavelength (λ1) may be approximately 600 nm and the second wavelength (λ2) may be approximately 750 nm. The center wavelength (λc) of the first color filter (CF1) may be any value between the first wavelength (λ1) and the second wavelength (λ2). For example, the center wavelength (λc) of the first color filter (CF1) may be 675 nm, which is the average value of the first wavelength (λ1) and the second wavelength (λ2), but the present embodiment is not limited thereto.

[0179] For the second color filter (CF2) that transmits green light, the first wavelength (λ1) may be approximately 500 nm and the second wavelength (λ2) may be approximately 570 nm. The center wavelength (λc) of the second color filter (CF2) may be any value between the first wavelength (λ1) and the second wavelength (λ2). For example, the center wavelength (λc) of the second color filter (CF2) may be 535 nm, which is the average value of the first wavelength (λ1) and the second wavelength (λ2), but the present embodiment is not limited thereto.

[0180] For the third color filter (CF3) that transmits blue light, the first wavelength (λ1) may be approximately 430 nm and the second wavelength (λ2) may be approximately 490 nm. The center wavelength (λc) of the third color filter (CF3) may be any value between the first wavelength (λ1) and the second wavelength (λ2). For example, the center wavelength (λc) of the third color filter (CF3) may be 460 nm, which is the average value of the first wavelength (λ1) and the second wavelength (λ2), but the present embodiment is not limited thereto.

[0181] Referring again to FIG. 9, the first height (h1) of the plurality of first nanostructures may have a value between 500 nm, which is the first wavelength (λ1) for the second color filter (CF2), and 570 nm, which is the second wavelength (λ2). The first width of the plurality of first nanostructures may be 53.5 nm to 535 nm, which is 1 / 10 to 1 times the center wavelength (λc) of 535 nm for the second color filter (CF2).

[0182] The second height of the first substructures may be any value between 600 nm, which is the first wavelength (λ1) for the first color filter (CF1), and 750 nm, which is the second wavelength (λ2). The second width of the first substructures may be 67.5 nm to 675 nm, which is 1 / 10 to 1 times the center wavelength (λc) of 675 nm for the first color filter (CF1).

[0183] The third height of the second substructures may have any value between 500 nm, which is the first wavelength (λ1) for the second color filter (CF2), and 570 nm, which is the second wavelength (λ2). The third width of the second substructures may be 53.5 nm to 535 nm, which is 1 / 10 to 1 times the center wavelength (λc) for the second color filter (CF2), which is 535 nm.

[0184] The fourth height of the third substructures may have any value between 430 nm, which is the first wavelength (λ1) for the third color filter (CF3), and 490 nm, which is the second wavelength (λ2). The fourth width of the third substructures may be 46 nm to 460 nm, which is 1 / 10 to 1 times the center wavelength (λc) of 460 nm for the third color filter (CF3).

[0185] The fourth substructures can be formed substantially identically to the second substructures. Accordingly, the description of the fourth substructure will be omitted.

[0186] FIG. 11 is a perspective view of a display device according to some embodiments of the present invention. FIG. 12 is a plan view showing one example of the display device of FIG. 11. FIG. 13 is a side view showing another example of the display device of FIG. 11. Parts that overlap with the foregoing are omitted or simplified, and the differences will be explained mainly.

[0187] Referring to FIGS. 11 and 12, a display device (10) according to some embodiments of the present invention includes a display panel (100), a display driving circuit (200), a display circuit board (300), and a touch driving circuit (400).

[0188] Compared to FIGS. 1 and FIGS. 2, the display device (10) may additionally include a touch driving circuit (400).

[0189] The touch driving circuit (400) can be placed on the display circuit board (300). The touch driving circuit (400) can be formed as an integrated circuit and attached to the display circuit board (300).

[0190] Referring to FIG. 13, the display panel (100) may include a substrate (SUB), a thin film transistor layer (TFTL), a light-emitting element layer (EML), an encapsulation layer (TFEL), a touch sensing layer (SENL), a color filter layer (CFL), and a light modulation layer (LML).

[0191] Compared to FIG. 3, the display panel (100) may further include a touch sensing layer (SENL) disposed between the encapsulation layer (TFEL) and the color filter layer (CFL).

[0192] A touch driving circuit (400) may be electrically connected to sensor electrodes of a touch sensing layer (SENL) of a display panel (100). The touch driving circuit (400) applies driving signals to the sensor electrodes of the touch sensing layer (SENL) and measures the mutual capacitance values ​​of the sensor electrodes. The driving signal may be a signal having a plurality of driving pulses. The touch driving circuit (400) may determine whether a user touches and whether there is proximity based on the mutual capacitance values. A user touch refers to an object, such as a user's finger or a pen, directly contacting one side of the display device (10) placed on the touch sensing layer (SENL). A user proximity refers to an object, such as a user's finger or a pen, hovering away from one side of the display device (10).

[0193] FIG. 14 is a layout diagram illustrating the touch sensing layer of FIG. 13 in an exemplary manner.

[0194] In FIG. 14, the sensor electrodes (SE) of the touch sensing layer (SENL) include two types of electrodes, for example, driving electrodes (TE) and sensing electrodes (RE), and are driven in a mutual capacitance manner in which a voltage charged in mutual capacitance is detected through the sensing electrodes (RE) after a driving signal is applied to the driving electrodes (TE), but is not limited thereto.

[0195] In FIG. 14, for convenience of explanation, only the driving electrodes (TE), sensing electrodes (RE), dummy patterns (DE), sensor wirings (TL1, TL2, RL), and sensor pads (TP1, TP2) are shown.

[0196] Referring to FIG. 14, the touch sensing layer (SENL) includes a touch sensor area (TSA) for detecting a user's touch and a touch peripheral area (TPA) disposed around the touch sensor area (TSA). The touch sensor area (TSA) may overlap the display area (DA) of FIG. 11 to 13, and the touch peripheral area (TPA) may overlap the non-display area (NDA) of FIG. 11 to 13.

[0197] The touch sensor area (TSA) includes driving electrodes (TE), sensing electrodes (RE), and dummy patterns (DE). The driving electrodes (TE) and sensing electrodes (RE) may be electrodes for forming mutual capacitance to detect the touch of an object or person.

[0198] The sensing electrodes (RE) can be arranged parallel to each other in a first direction (X-axis direction) and a second direction (Y-axis direction). The sensing electrodes (RE) can be electrically connected in the first direction (X-axis direction). Adjacent sensing electrodes (RE) in the first direction (X-axis direction) can be connected to each other. Adjacent sensing electrodes (RE) in the second direction (Y-axis direction) can be electrically separated from each other.

[0199] Driving electrodes (TE) can be arranged in parallel in a first direction (X-axis direction) and a second direction (Y-axis direction). Adjacent driving electrodes (TE) in the first direction (X-axis direction) can be electrically separated from each other. Driving electrodes (TE) can be electrically connected in the second direction (Y-axis direction). For example, adjacent driving electrodes (TE) in the second direction (Y-axis direction) can be connected to each other through a connecting electrode (BE) as shown in FIG. 15.

[0200] Each of the dummy patterns (DE) may be surrounded by a driving electrode (TE) or a sensing electrode (RE). Each of the dummy patterns (DE) may be electrically isolated from the driving electrode (TE) or the sensing electrode (RE). Each of the dummy patterns (DE) may be positioned apart from the driving electrode (TE) or the sensing electrode (RE). Each of the dummy patterns (DE) may be electrically floating.

[0201] In FIG. 14, the driving electrodes (TE), sensing electrodes (RE), and dummy patterns (DE) are each illustrated as having a rhombus planar shape, but are not limited thereto. For example, the driving electrodes (TE), sensing electrodes (RE), and dummy patterns (DE) may each have a planar shape other than a rhombus, a polygon other than a square, a circle, or an ellipse.

[0202] Sensor wiring (TL1, TL2, RL) may be placed in a sensor peripheral area (TPA). The sensor wiring (TL1, TL2, RL) includes sensing wiring (RL) connected to sensing electrodes (RE), first driving wiring (TL1) and second driving wiring (TL2) connected to driving electrodes (TE).

[0203] Sensing electrodes (RE) positioned on one side of the touch sensor area (TSA) can be connected one-to-one to sensing wires (RL). For example, as shown in FIG. 14, a sensing electrode (RE) positioned at the right end among the sensing electrodes (RE) electrically connected in the first direction (X-axis direction) can be connected to a sensing wire (RL). The sensing wires (RL) can be connected one-to-one to the second sensor pads (TP2). Therefore, the touch driving circuit (400) can be electrically connected to the sensing electrodes (RE).

[0204] Driving electrodes (TE) positioned on one side of the touch sensor area (TSA) may be connected one-to-one to the first driving wires (TL1), and driving electrodes (TE) positioned on the other side of the touch sensor area (TSA) may be connected one-to-one to the second driving wires (TL2). For example, as shown in FIG. 14, among the driving electrodes (TE) electrically connected in the second direction (Y-axis direction), the driving electrode (TE) positioned at the lower end may be connected to the first driving wire (TL1), and the driving electrode (TE) positioned at the upper end may be connected to the second driving wire (TL2). The second driving wires (TL2) may be connected to the driving electrodes (TE) at the upper side of the touch sensor area (TSA) via the left outer side of the touch sensor area (TSA).

[0205] The first driving wires (TL1) and the second driving wires (TL2) can be connected one-to-one to the first sensor pads (TP1). Therefore, the touch driving circuit (400) can be electrically connected to the driving electrodes (TE). Since the driving electrodes (TE) are connected to the driving wires (TL1, TL2) on both sides of the touch sensor area (TSA) to receive the touch driving signal, it is possible to prevent a difference from occurring between the touch driving signal applied to the driving electrodes (TE) located on the lower side of the touch sensor area (TSA) and the touch driving signal applied to the driving electrodes (TE) located on the upper side of the touch sensor area (TSA) due to the RC delay of the touch driving signal.

[0206] A first sensor pad area (TPA1) in which first sensor pads (TP1) are placed may be placed on one side of a display pad area (DPA) in which display pads (DP) are placed. A second sensor pad area (TPA2) in which second sensor pads (TP2) are placed may be placed on the other side of the display pad area (DPA). The display pads (DP) may be electrically connected to the data wiring of the display panel (100).

[0207] The display pad area (DPA), the first sensor pad area (TPA1), and the second sensor pad area (TPA2) may correspond to pads of a display panel (100) connected to a display circuit board (300) shown in FIG. 12. A display circuit board (300) may be disposed on the display pads (DP), the first sensor pads (TP1), and the second sensor pads (TP2). The display pads (DP), the first sensor pads (TP1), and the second sensor pads (TP2) may be electrically connected to the display circuit board (300) using a low-resistance, high-reliability material such as an anisotropic conductive film or SAP. Therefore, the display pads (DP), the first sensor pads (TP1), and the second sensor pads (TP2) may be electrically connected to a touch driving circuit (400) disposed on the display circuit board (300).

[0208] FIG. 15 is a layout diagram showing an enlarged view of area B of FIG. 14. Parts that overlap with the above-mentioned content will be omitted or simplified, and the differences will be explained in detail.

[0209] Referring to FIG. 15, the driving electrodes (TE) and the sensing electrodes (RE) are placed on the same layer, so they can be spaced apart from each other. A gap may be formed between adjacent driving electrodes (TE) and sensing electrodes (RE).

[0210] In addition, the dummy pattern (DE) can also be placed on the same layer as the driving electrodes (TE) and the sensing electrodes (RE). That is, a gap can be formed between adjacent driving electrodes (TE) and the dummy pattern (DE), and between adjacent sensing electrodes (RE) and the dummy pattern (DE).

[0211] The connecting electrodes (BE) may be placed on a different layer from the driving electrodes (TE) and the sensing electrodes (RE). The connecting electrode (BE) may be formed to be bent at least once. In FIG. 15, the connecting electrode (BE) is illustrated as having a bracket shape (“<” or “>”), but the planar shape of the connecting electrode (BE) is not limited thereto. Since driving electrodes (TE) adjacent to each other in the second direction (Y-axis direction) are connected by a plurality of connecting electrodes (BE), even if one of the connecting electrodes (BE) is disconnected, the driving electrodes (TE) adjacent to each other in the second direction (Y-axis direction) can be stably connected. In FIG. 15, driving electrodes (TE) adjacent to each other are illustrated as being connected by two connecting electrodes (BE), but the number of connecting electrodes (BE) is not limited thereto.

[0212] The connecting electrode (BE) can overlap adjacent driving electrodes (TE) in the second direction (Y-axis direction) from the third direction (Z-axis direction), which is the thickness direction of the substrate (SUB). The connecting electrode (BE) can overlap with the sensing electrode (RE) in the third direction (Z-axis direction). One side of the connecting electrode (BE) can be connected to any one of the adjacent driving electrodes (TE) in the second direction (Y-axis direction) through touch contact holes (TCNT). The other side of the connecting electrode (BE) can be connected to another driving electrode (TE) among the adjacent driving electrodes (TE) in the second direction (Y-axis direction) through touch contact holes (TCNT).

[0213] Due to the connecting electrodes (BE), the driving electrodes (TE) and the sensing electrodes (RE) can be electrically separated at their intersections. As a result, mutual capacitance can be formed between the driving electrodes (TE) and the sensing electrodes (RE).

[0214] Each of the driving electrodes (TE), sensing electrodes (RE), and connecting electrodes (BE) may have a planar shape of a mesh structure or a net structure. Additionally, each of the dummy patterns (DE) may have a planar shape of a mesh structure or a net structure. As a result, each of the driving electrodes (TE), sensing electrodes (RE), connecting electrodes (BE), and dummy patterns (DE) may be spaced apart from the light-emitting regions (EA1~EA4) of each pixel (PX) and the light-sensing region (RA) of the light-sensing pixel (OPD). Therefore, the light emitted from the light-emitting regions (EA1~EA4) is blocked by the driving electrodes (TE), sensing electrodes (RE), connecting electrodes (BE), and dummy patterns (DE), thereby preventing a reduction in the brightness of the light. In addition, light incident on the light sensing area (RA) can be blocked by the driving electrodes (TE), sensing electrodes (RE), connecting electrodes (BE), and dummy patterns (DE), thereby preventing a reduction in the amount of light received by the light sensing area (RA).

[0215] FIG. 16 is a cross-sectional view taken along J-J' of FIG. 15. Parts that overlap with the above-mentioned content will be omitted or simplified, and the differences will be explained in detail.

[0216] Referring to FIG. 16, the display panel (100) may include a substrate (SUB), a thin film transistor layer (TFTL), a light-emitting element layer (EML), an encapsulation layer (TFEL), a touch sensing layer (SENL), a color filter layer (CFL), and a light modulation layer (LML).

[0217] Compared to FIG. 6, the display panel (100) may further include a touch sensing layer (SENL) disposed between the encapsulation layer (TFEL) and the color filter layer (CFL).

[0218] The touch sensing layer (SENL) may include a first touch insulating layer (TINS1), a second touch insulating layer (TINS2), a third touch insulating layer (TINS3), a driving electrode (TE), a sensing electrode (RE), and a connecting electrode (BE).

[0219] The first touch insulating film (TINS1) may be disposed on the encapsulation layer (TFEL). The first touch insulating film (TINS1) is an inorganic film and may be a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer, but is not limited thereto.

[0220] A connecting electrode (BE) may be disposed on the first touch insulating film (TINS1). The connecting electrode (BE) may be formed as a single layer or a multilayer made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof. The connecting electrode (BE) may overlap with the pixel defining film (190), a plurality of color filters (CF1~CF3), and a black matrix (BM) in a third direction (Z-axis direction). The connecting electrode (BE) may be obscured by the plurality of color filters (CF1~CF3) and the black matrix (BM) and may not be visible to the user.

[0221] A second touch insulating film (TINS2) may be disposed on the connecting electrode (BE). The second touch insulating film (TINS2) may be formed of an inorganic film, for example, a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer.

[0222] A driving electrode (TE) and a sensing electrode (RE) may be disposed on the second touch insulating film (TINS2). Additionally, the dummy patterns (DE), first driving wires (TL1), second driving wires (TL2), and sensing wires (RL) shown in FIG. 14 may be disposed on the second touch insulating film (TINS2).

[0223] The driving electrode (TE) and the sensing electrode (RE) can overlap with the connecting electrode (BE) in a third direction (Z-axis direction). The driving electrode (TE) can be connected to the connecting electrode (BE) through a touch contact hole (TCNT) penetrating the second touch insulating film (TINS2). The driving electrode (TE) and the sensing electrode (RE) can overlap with the pixel defining film (190), a plurality of color filters (CF1~CF3), and a black matrix (BM). The driving electrode (TE) and the sensing electrode (RE) may be obscured by the plurality of color filters (CF1~CF3) and the black matrix (BM) and may not be visible to the user.

[0224] A third touch insulating film (TINS3) may be disposed on the driving electrode (TE) and the sensing electrode (RE). The third touch insulating film (TINS3) may be formed of an inorganic film, for example, a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer.

[0225] FIG. 17 is a block diagram of an electronic device including a display device according to some embodiments of the present invention.

[0226] Referring to FIG. 17, an electronic device (1) according to one embodiment may include a display module (11), a processor (13), a memory (12), and a power module (14).

[0227] The processor (13) may include at least one of a central processing unit (CPU), an application processor (AP), a graphic processing unit (GPU), a communication processor (CP), an image signal processor (ISP), and a controller.

[0228] The memory (12) may store data information necessary for the operation of the processor (13) or the display module (11). When the processor (13) executes an application stored in the memory (12), a video data signal and / or an input control signal is transmitted to the display module (11), and the display module (11) can process the received signal and output video information through a display screen.

[0229] The power module (14) may include a power supply module, such as a power adapter or battery device, and a power conversion module that converts the power supplied by the power supply module to generate power necessary for the operation of the electronic device (1).

[0230] At least one of each component of the electronic device (1) described above may be included in a display device according to the embodiments described above. Additionally, some of the individual modules functionally included in one module may be included in the display device, while others may be provided separately from the display device. For example, the display device may include a display module (11), and the processor (13), memory (12), and power module (14) may be provided in the form of other devices within the electronic device (1) other than the display device.

[0231] FIG. 18 is an exemplary diagram of an electronic device including a display device according to some embodiments of the present invention.

[0232] Referring to FIG. 18, various electronic devices to which a display device according to the embodiments is applied may include not only image display electronic devices such as a smartphone (10_1a), tablet PC (10_1b), laptop (10_1c), TV (10_1d), and desk monitor (10_1e), but also wearable electronic devices including display modules such as smart glasses (10_2a), head-mounted display (10_2b), and smart watch (10_2c), and automotive electronic devices (10_3) including display modules such as a CID (Center Information Display) and room mirror display placed on the instrument panel, center fascia, and dashboard of a car.

[0233] Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention may be implemented in other specific forms without changing the technical concept or essential features thereof. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive.

Claims

1. Substrate; A plurality of light-emitting pixel electrodes disposed on one surface of the above substrate; A plurality of sensing pixel electrodes disposed on one surface of the substrate and spaced apart from the plurality of light-emitting pixel electrodes; A pixel defining film that exposes a portion of each of the plurality of light-emitting pixel electrodes and the plurality of sensing pixel electrodes, and defines a plurality of light-emitting regions and a plurality of light-sensing regions; A plurality of light-emitting layers disposed on the plurality of light-emitting pixel electrodes in the plurality of light-emitting regions; A light sensing layer disposed on the plurality of sensing pixel electrodes in the plurality of light sensing regions and configured to detect light reflected to a user; A common electrode disposed on the pixel defining film, the plurality of light-emitting layers, and the light-sensing layer; A sealing layer disposed on the above common electrode and comprising at least one organic film and at least one inorganic film; A first metalens comprising a plurality of first nanostructures disposed on the above-mentioned encapsulation layer and overlapping with the plurality of light-sensing regions in the thickness direction of the substrate; An intermediate layer disposed on the plurality of first nanostructures above; A black matrix disposed in a non-luminous region between the plurality of light-emitting regions and the plurality of light-sensing regions on the intermediate layer; A window member disposed on the black matrix and the intermediate layer; and A display device comprising a second metalens that includes a plurality of second nanostructures disposed on the window member and overlapping with the plurality of light-emitting regions in the thickness direction of the substrate.

2. In Paragraph 1, The above plurality of first nanostructures is a display device having a first height, a first width, and a first period.

3. In Paragraph 2, The first height of each of the above plurality of first nanostructures is the same display device.

4. In Paragraph 2, It further includes a first color filter disposed in the light-sensing region on the above-mentioned encapsulation layer, and The first height of each of the plurality of first nanostructures is 1 / 10 to 1 times the center wavelength of the first wavelength range transmitted by the first color filter, and A display device in which the above central wavelength is defined as the wavelength of the light with the greatest intensity among the light passing through the above first color filter.

5. In Paragraph 2, A display device in which the first width of each of the above plurality of first nanostructures has a value greater than or equal to the first minimum width and less than or equal to the first maximum width.

6. In Paragraph 5, A display device in which a first nanostructure having the first maximum width among the plurality of first nanostructures is disposed at the center of the first metalens.

7. In Paragraph 5, A display device in which the plurality of first nanostructures are arranged in descending order from the first maximum width to the first minimum width within the first period.

8. In Paragraph 7, A display device in which the first period is the distance between first nanostructures having the first maximum width among the plurality of first nanostructures.

9. In Paragraph 8, The above first cycle is a display device that decreases from the center to the edge of the above first metalens.

10. In Paragraph 1, A display device in which the width of the first direction of the first metalens is greater than the width of the first direction of the light-sensing area.

11. In Paragraph 1, The above plurality of second nanostructures are, First substructures disposed in a first light-emitting region configured to emit light of a first color among the plurality of light-emitting regions; Second substructures disposed in a second light-emitting region configured to emit light of a second color among the plurality of light-emitting regions; and A display device comprising third substructures disposed in a third light-emitting region configured to emit light of a third color among the plurality of light-emitting regions.

12. In Paragraph 11, The first substructures above are a display device having a second height, a second width, and a second period.

13. In Paragraph 12, It further includes a first color filter disposed in the first light-emitting region on the above encapsulation layer, and A display device in which the second height of each of the first substructures is 1 / 10 to 1 times the center wavelength of the first wavelength range through which the first color filter passes.

14. In Paragraph 12, The above second substructures have a third height, a third width, and a third period, The first substructures above are different display devices from the second substructures above.

15. In Paragraph 14, It further includes a second color filter disposed in the second light-emitting region on the above encapsulation layer, and A display device in which the third height of each of the second substructures is 1 / 10 to 1 times the center wavelength of the second wavelength range transmitted by the second color filter.

16. In Paragraph 14, The above third substructures have a fourth height, a fourth width, and a fourth period, The above third substructures are different display devices from the above first substructures and the above second substructures.

17. In Paragraph 16, It further includes a third color filter disposed in the third light-emitting region on the above encapsulation layer, and A display device in which the fourth height of each of the above-mentioned third substructures is 1 / 10 to 1 times the center wavelength of the third wavelength range transmitted by the third color filter.

18. In Paragraph 11, A display device in which the width in the first direction of the second metalens including the first substructures in the thickness direction of the substrate is greater than the width in the first direction of the first light-emitting region.

19. In Paragraph 1, A plurality of inorganic insulating films disposed on the above-mentioned encapsulation layer; and A display device further comprising touch electrodes disposed between the plurality of inorganic insulating films and forming mutual capacitance.

20. In an electronic device including a display device, The above display device is, Substrate; A plurality of light-emitting pixel electrodes disposed on one surface of the above substrate; A plurality of sensing pixel electrodes disposed on one surface of the substrate and spaced apart from the plurality of light-emitting pixel electrodes; A pixel defining film that exposes a portion of each of the plurality of light-emitting pixel electrodes and the plurality of sensing pixel electrodes, and defines a plurality of light-emitting regions and a plurality of light-sensing regions; A plurality of light-emitting layers disposed on the plurality of light-emitting pixel electrodes in the plurality of light-emitting regions; A light sensing layer disposed on the plurality of sensing pixel electrodes in the plurality of light sensing regions and configured to detect light reflected to a user; A common electrode disposed on the pixel defining film, the plurality of light-emitting layers, and the light-sensing layer; A sealing layer disposed on the above common electrode and comprising at least one organic film and at least one inorganic film; A first metalens comprising a plurality of first nanostructures disposed on the above-mentioned encapsulation layer and overlapping with the plurality of light-sensing regions in the thickness direction of the substrate; An intermediate layer disposed on the plurality of first nanostructures above; A black matrix disposed in a non-luminous region between the plurality of light-emitting regions and the plurality of light-sensing regions on the intermediate layer; A window member disposed on the black matrix and the intermediate layer; and An electronic device comprising a display device including a second metalens comprising a plurality of second nanostructures disposed on the window member and overlapping with the plurality of light-emitting regions in the thickness direction of the substrate.

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