Display device

Abstract

The display device includes: a substrate; a first electrode on the substrate; a pixel defining layer having a pixel opening in which the first electrode is in the pixel opening; a light emitting layer in the pixel opening; a second electrode on the light emitting layer and the pixel defining layer; an encapsulation layer on the second electrode; a first sensing electrode portion on the encapsulation layer; a first sensing insulating layer on the first sensing electrode portion; a second sensing electrode portion and a reflective layer disposed on the first sensing insulating layer; and a first light shielding layer and a second light shielding layer on the first sensing insulating layer; wherein at least a portion of a lower surface of the reflective layer is inclined.

Description

[0001] Cross - reference to related applications

[0002] This application claims priority to Korean Patent Application No. 10 - 2023 - 0103601, filed with the Korean Intellectual Property Office on August 8, 2023, the disclosure of which is incorporated herein by reference in its entirety. Technical field

[0003] The present disclosure relates to a display device, and more particularly, to a display device in which the external light reflectance is reduced. Background art

[0004] Display devices including technologies such as liquid crystal displays (LCDs) and organic light - emitting diodes (OLEDs) are designed to present visual content on a screen.

[0005] These display devices are utilized in a variety of electronic devices including mobile phones, navigation devices, digital cameras, e - books, portable game consoles, and various other terminals. Summary of the utility model

[0006] Embodiments of the present disclosure provide a display device capable of improving display quality by reducing external light reflection.

[0007] A display device according to an embodiment of the present disclosure includes: a substrate; a first electrode on the substrate; a pixel - defining layer having a pixel opening, wherein the first electrode is in the pixel opening; a light - emitting layer in the pixel opening; a second electrode on the light - emitting layer and the pixel - defining layer; a encapsulation layer on the second electrode; a first sensing electrode portion on the encapsulation layer; a first sensing insulating layer on the first sensing electrode portion; a second sensing electrode portion and a reflective layer disposed on the first sensing insulating layer; and a first light - shielding layer and a second light - shielding layer on the first sensing insulating layer; wherein at least a part of the lower surface of the reflective layer is inclined.

[0008] The second light - shielding layer includes: a second - 1 sub - light - shielding layer overlapping with a first pixel; a second - 2 sub - light - shielding layer overlapping with a second pixel; and a second - 3 sub - light - shielding layer overlapping with a third pixel.

[0009] The display device includes a plurality of second - 1 sub - light - shielding layers; each of the plurality of second - 1 sub - light - shielding layers has an elliptical shape and has a first major axis, and the first angle between the first major axis and the first direction has at least two values.

[0010] The first major axes of the plurality of second - 1 sub - light - shielding layers are randomly arranged.

[0011] The first major axes of the plurality of second - 1 sub - light - shielding layers are set at equal intervals.

[0012] The display device includes a plurality of second-2 sub-light-shielding layers; each of the plurality of second-2 sub-light-shielding layers has an elliptical shape and has a second major axis, and the second angle between the second major axis and the first direction has at least two values.

[0013] The second major axes of the plurality of second-2 sub-light-shielding layers are arranged equidistantly or randomly.

[0014] The display device includes a plurality of second-3 sub-light-shielding layers; each of the plurality of second-3 sub-light-shielding layers has an elliptical shape and has a third major axis, and the third angle between the third major axis and the first direction has at least two values.

[0015] The third major axes of the plurality of second-3 sub-light-shielding layers are arranged equidistantly or randomly.

[0016] The major axis of the second-1 sub-light-shielding layer, the major axis of the second-2 sub-light-shielding layer, and the major axis of the second-3 sub-light-shielding layer are arranged in different directions.

[0017] The display device further includes a color filter on the first light-shielding layer and the second light-shielding layer.

[0018] The second-1 sub-light-shielding layer, the second-2 sub-light-shielding layer, and the second-3 sub-light-shielding layer have different areas from each other.

[0019] The planar shape of the second light-shielding layer is triangular, quadrilateral, or pentagonal.

[0020] The second light-shielding layer overlaps with the light-emitting layer; and the first light-shielding layer overlaps with the pixel defining layer.

[0021] The display device according to an embodiment of the present disclosure includes: a substrate; a plurality of first electrodes on the substrate; a pixel defining layer having a plurality of pixel openings overlapping with each of the plurality of first electrodes; a plurality of light-emitting layers respectively placed in the plurality of pixel openings of the pixel defining layer; a second electrode on the pixel defining layer and the plurality of light-emitting layers; a packaging layer on the second electrode; a lower sensing electrode portion on the packaging layer; a first sensing insulating layer on the lower sensing electrode portion; an upper sensing electrode portion on the first sensing insulating layer; a plurality of reflective layers on the first sensing insulating layer and respectively overlapping with the plurality of pixel openings; and a plurality of second light-shielding layers on the plurality of reflective layers, wherein the plurality of second light-shielding layers have at least two different planar shapes from each other.

[0022] The second light-shielding layer includes: a second-1 sub-light-shielding layer overlapping with the first pixel; a second-2 sub-light-shielding layer overlapping with the second pixel; and a second-3 sub-light-shielding layer overlapping with the third pixel.

[0023] In the plane, the second-1 sub-light-shielding layer rotates clockwise with respect to the second-2 sub-light-shielding layer.

[0024] The second-1 sub-light-shielding layer and the second-2 sub-light-shielding layer have different planar areas.

[0025] The first sensing insulating layer includes a first opening exposing the lower sensing electrode portion and a plurality of second openings respectively overlapping with a plurality of pixel openings.

[0026] The upper sensing electrode portion is in the first opening, and a plurality of reflective layers are in the plurality of second openings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic perspective view showing a usage state of a display device according to an embodiment of the present disclosure.

[0028] Figure 2 is an exploded perspective view of a display device according to an embodiment of the present disclosure.

[0029] Figure 3 is a block diagram of a display device according to an embodiment of the present disclosure.

[0030] Figure 4 is a schematic plan view of sensing electrodes in a display panel according to an embodiment of the present disclosure.

[0031] Figure 5 is a cross-sectional view illustrating a part of a display area in a display panel according to an embodiment of the present disclosure.

[0032] Figure 6 is a schematic plan view illustrating a plurality of pixels according to an embodiment of the present disclosure.

[0033] Figure 7 is a view showing Figure 6 a part of

[0034] Figure 8 , Figure 9 , Figure 10 and Figure 11 is a schematic plan view illustrating a plurality of pixels according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0035] Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0036] The present disclosure can be embodied in many different forms and is not limited to the embodiments set forth herein.

[0037] Throughout the specification, the same reference numerals are assigned to the same or similar components.

[0038] In addition, for ease of illustration, the dimensions and thicknesses of each component, layer, or region shown in the drawings may be enlarged or exaggerated, and thus, it should be understood that the present invention is not necessarily limited thereto.

[0039] In addition, when a part such as a layer, film, region, or plate is referred to as being "on" or "above" another part, this includes not only the case where the part is "directly on" the other part, but also the case where yet another part is present between the part and the other part.

[0040] In contrast, when a part is referred to as being "directly on" another part, this means that there is no other part between the part and the other part.

[0041] In addition, when a part is "above" or "on" a reference part, it may mean that the part is placed above or below the reference part.

[0042] In addition, throughout the specification, when a component is referred to as "comprising", this means that the component may further comprise other components without excluding other components, unless otherwise stated.

[0043] In addition, throughout the specification, when referring to a "planar image", this refers to when viewing the target part from above, and when referring to a "cross-sectional image", this refers to the cross-section of the target part that is vertically cut when viewed from the side.

[0044] Hereinafter, reference will be made to Figures 1 to 3 describe the schematic structure of the display device.

[0045] Figure 1 is a schematic perspective view showing the usage state of a display device according to an embodiment, Figure 2 is an exploded perspective view of a display device according to an embodiment, and Figure 3 is a block diagram of a display device according to an embodiment.

[0046] Reference Figure 1 , the display device 1000 according to an embodiment is a device for displaying video or still images. For example, the display device 1000 can be used as a display screen for various products such as mobile phones, smart phones, tablet personal computers, mobile communication terminals, electronic notebooks, e-books, portable multimedia players (PMPs), navigation devices, ultra-mobile personal computers (UMPCs), and televisions, notebooks, monitors, billboards, and Internet of Things (IoT) devices.

[0047] In addition, the display device 1000 can be used for wearable devices such as smart watches, watch phones, glasses-type displays, and head-mounted displays (HMDs).

[0048] In addition, the display device 1000 can be used as a dashboard of an automobile, a central information display (CID) placed on the center console or dashboard of the automobile, an in-vehicle rearview mirror display for replacing the rearview mirror of the automobile, and a display for an entertainment facility for the rear seat in the automobile placed on the back of the front seat.

[0049] For ease of description, Figure 1 the display device 1000 is shown being used as a tablet PC.

[0050] The display device 1000 can display an image in a third direction DR3 on a display surface parallel to a first direction DR1 and a second direction DR2.

[0051] The display surface on which the image is displayed can correspond to the front surface of the display device 1000 and can correspond to the front surface of the cover window WU.

[0052] The image can include a still image and a moving image.

[0053] In the present embodiment, the front surface (or upper surface) and the rear surface (or lower surface) of each component are described based on the direction in which the image is displayed.

[0054] The front surface and the rear surface face each other in the third direction DR3, and the normal direction of each of the front surface and the rear surface can be parallel to the third direction DR3.

[0055] The deviation distance between the front surface and the rear surface can correspond to the thickness of the display panel DP (see Figure 2 ) in the third direction DR3.

[0056] The display device 1000 can detect a user input applied from the outside (refer to the hand in Figure 1 ).

[0057] The user input can include various types of external inputs such as a part of the user's body, light, heat, or pressure.

[0058] In the embodiment, the user input is shown as a user's hand applied in the foreground.

[0059] However, the present invention is not limited thereto.

[0060] The user input can be provided in various forms. For example, the user input can correspond to a user input of a handheld electronic pen.

[0061] In addition, depending on the structure of the display device 1000, the display device 1000 can detect a user input applied to the side surface or the rear surface of the display device 1000.

[0062] Refer toFigure 1 And Figure 2 As shown in Figure 2 , the display device 1000 may include a cover window WU, a housing HM, a display panel DP, and an optical element ES.

[0063] In an embodiment, the cover window WU and the housing HM may be combined to form the appearance of the display device 1000.

[0064] The cover window WU may include an insulating panel.

[0065] For example, the cover window WU may be made of glass, plastic, or a combination thereof.

[0066] The front surface of the cover window WU may form the front surface of the display device 1000.

[0067] A transmissive area TA may be provided on the front surface of the display device 1000 and form an optically transparent area.

[0068] For example, the transmissive area TA may have a visible light transmittance of about 90% or higher.

[0069] An occlusion area BA may define the shape of the transmissive area TA.

[0070] The occlusion area BA may be adjacent to the transmissive area TA and may surround the transmissive area TA.

[0071] Compared with the transmissive area TA, the occlusion area BA may have a relatively low light transmittance.

[0072] The occlusion area BA may include an opaque material that blocks light.

[0073] The occlusion area BA may have a predetermined color.

[0074] The occlusion area BA may be defined by a border layer provided separately from the transparent substrate that defines the transmissive area TA. Alternatively, the occlusion area BA may be defined by an ink layer inserted into or colored in the transparent substrate.

[0075] The display panel DP may include a front surface that includes a display area DA and a non-display area PA.

[0076] The display area DA may be an area where pixels operate according to an electrical signal to emit light.

[0077] The non-display area PA of the display panel DP may include a driving unit 50.

[0078] In an embodiment, the display area DA may be an area that includes pixels and is used for displaying an image. The display area DA may also be an area where a touch sensor is placed above the pixels in the third direction DR3 to sense an external input.

[0079] The transmissive area TA of the cover window WU may at least partially overlap with the display area DA of the display panel DP.

[0080] For example, the transmissive area TA may overlap with the entire surface of the display area DA, or may overlap with at least a part of the display area DA.

[0081] Accordingly, the user can view the image through the transmissive area TA or provide an external input based on the image.

[0082] However, the present utility model is not limited thereto.

[0083] For example, within the display area DA, the area for displaying an image and the area for sensing an external input may be separated from each other.

[0084] The non-display area PA of the display panel DP may at least partially overlap with the shielding area BA of the cover window WU.

[0085] The non-display area PA may be the area covered by the shielding area BA.

[0086] The non-display area PA is adjacent to the display area DA and may surround the display area DA.

[0087] An image is not displayed in the non-display area PA. The driving circuit or driving wiring for driving the display area DA may be provided in the non-display area PA.

[0088] The non-display area PA may include a first peripheral area PA1 located outside the display area DA and a second peripheral area PA2 including a driving unit 50, connection wiring, and a bending area. The second peripheral area PA2 may be adjacent to one side of the display area DA.

[0089] In Figure 2 the embodiment, the first peripheral area PA1 is located on three sides of the display area DA, and the second peripheral area PA2 is located on the fourth side of the display area DA.

[0090] In an embodiment, the display panel DP may be assembled in a flat state, with the display area DA and the non-display area PA facing the cover window WU.

[0091] However, the present utility model is not limited thereto.

[0092] A part of the non-display area PA of the display panel DP may be bent.

[0093] In this configuration, some of the non-display area PA faces the rear surface of the display device 1000, so that the shielding area BA visible on the front surface of the display device 1000 can be reduced. In Figure 2In this case, the second peripheral region PA2 can be bent and placed on the rear surface of the display region DA, and then assembled.

[0094] In addition, the display panel DP may include component regions EA, such as a first component region EA1 and a second component region EA2.

[0095] The first component region EA1 and the second component region EA2 may be at least partially surrounded by the display region DA.

[0096] The first component region EA1 and the second component region EA2 are illustrated as being spaced apart from each other, but are not limited thereto, and may be at least partially connected.

[0097] The first component region EA1 and the second component region EA2 may be regions where components using infrared light, visible light, or sound are provided below the first component region EA1 and the second component region EA2.

[0098] In the display region DA, a plurality of light-emitting diodes and a plurality of pixel circuit units for generating and transmitting a light-emitting current are provided.

[0099] Here, one light-emitting diode and one pixel circuit unit are referred to as a pixel PX.

[0100] In the display region DA, one pixel circuit unit and one light-emitting diode are formed one-to-one. In other words, each pixel circuit unit may correspond to one light-emitting diode, but the present disclosure is not limited thereto.

[0101] The first component region EA1 may include a transmissive portion through which light and / or sound can pass and a display portion including a plurality of pixels.

[0102] The transmissive portion is located between adjacent pixels and is composed of a layer that allows light and / or sound to penetrate.

[0103] The transmissive portion may be placed between adjacent pixels, and depending on the embodiment, a light-blocking layer such as an opaque layer may overlap the first component region EA1.

[0104] The number of pixels per unit area (hereinafter referred to as the resolution) of the pixels included in the display region DA (hereinafter referred to as ordinary pixels) and the number of pixels per unit area of the pixels included in the first component region EA1 (hereinafter referred to as first component pixels) may be the same.

[0105] The second component area EA2 includes an area made of a transparent layer to allow light to pass through it (hereinafter referred to as the light-transmissive area). Additionally, layers such as a pixel-defining layer and / or a light-shielding layer may include openings overlapping with positions corresponding to the second component area EA2 so as not to block light.

[0106] The number of pixels per unit area of the pixels included in the second component area EA2 (hereinafter referred to as the second component pixels) may be less than the number of pixels per unit area of the normal pixels included in the display area DA.

[0107] As a result, the resolution of the second component pixels may be lower than that of the normal pixels.

[0108] Reference Figures 1 to 3 , the display panel DP may include a display area DA including display pixels and a touch sensor TS.

[0109] The display panel DP can be visually recognized by the user from the outside through the transmissive area TA and includes pixels that are components for generating images.

[0110] Additionally, the touch sensor TS may be placed above the pixels and can detect an external input applied from the outside.

[0111] The touch sensor TS can detect an external input provided to the cover window WU.

[0112] Referring again to Figure 2 , the second peripheral area PA2 may include a bent portion.

[0113] The display area DA and the first peripheral area PA1 may have a flat state substantially parallel to the plane formed by the first direction DR1 and the second direction DR2. Additionally, the second peripheral area PA2 may be flat. The sides of the second peripheral area PA2 may extend from the flat state and again have a flat state after passing through the bent portion of the second peripheral area PA2.

[0114] At least a part of the second peripheral area PA2 may be bent and assembled to be placed at the rear side of the display area DA.

[0115] When assembled, at least a part of the second peripheral area PA2 overlaps with the display area DA in a plane, so the occlusion area BA of the display device 1000 can be reduced.

[0116] However, the present utility model is not limited thereto.

[0117] For example, the second peripheral area PA2 may not be bent.

[0118] The driving unit 50 can be mounted on the second peripheral area PA2, and can be mounted on the bent portion or on one side of the two sides of the bent portion.

[0119] The driving unit 50 can be provided in the form of a chip.

[0120] The driving unit 50 can be electrically connected to the display area DA to transmit an electrical signal to the display area DA.

[0121] For example, the driving unit 50 can supply a data signal to the pixel PX provided in the display area DA.

[0122] Alternatively, the driving unit 50 can include a touch driving circuit and can be electrically connected to the touch sensor TS provided in the display area DA.

[0123] The driving unit 50 can include various circuits other than the circuits described above, or can be designed to supply various electrical signals to the display area DA.

[0124] In the display device 1000, the pad portion can be placed at the end of the second peripheral area PA2 and is electrically connected to a flexible printed circuit board (FPCB) including a driving chip.

[0125] Here, the driving chip placed on the flexible printed circuit board can include various driving circuits for driving the display device 1000 or a connector for supplying power.

[0126] According to an embodiment, a rigid printed circuit board (PCB) can be used instead of the flexible printed circuit board.

[0127] The optical element ES can be disposed below the display panel DP.

[0128] The optical element ES can include a first optical element ES1 overlapping with the first component area EA1 and a second optical element ES2 overlapping with the second component area EA2.

[0129] The first optical element ES1 can be an electronic element using light or sound.

[0130] For example, the first optical element ES1 can be a sensor that receives and uses light such as an infrared sensor, a sensor that outputs and senses light or sound to measure distance or identify fingerprints, or a small lamp that outputs light. The first optical element ES1 can also be a speaker that outputs sound, etc.

[0131] In the case of an electronic element using light, various wavelength bands of light such as visible light, infrared light, and ultraviolet light can be used.

[0132] The second optical element ES2 may include at least one of a camera such as an infrared (IR) camera, a point projector, an infrared illuminator, and a time-of-flight sensor (ToF sensor).

[0133] Reference Figure 3 , the display device 1000 may include a display panel DP, a power module PM, a first electronic module EM1, and a second electronic module EM2.

[0134] The display panel DP, the power module PM, the first electronic module EM1, and the second electronic module EM2 may be electrically connected to each other.

[0135] Figure 3 Illustrated are a display pixel and a touch sensor TS placed in the display area DA among the components of the display panel DP.

[0136] The power module PM may supply power required for the overall operation of the display device 1000.

[0137] The power module PM may include a battery module.

[0138] The first electronic module EM1 and the second electronic module EM2 may include various functional modules for operating the display device 1000.

[0139] The first electronic module EM1 may be directly mounted on a motherboard electrically connected to the display panel DP. Alternatively, the first electronic module EM1 may be mounted on a separate board and electrically connected to the motherboard through a connector.

[0140] The first electronic module EM1 may include a control module CM, a wireless communication module TM, an image input module IIM, an audio input module AIM, a memory MM, and an external interface IF.

[0141] Some of the modules may not be mounted on the motherboard and may be electrically connected to the motherboard through a flexible printed circuit board connected to the motherboard.

[0142] The control module CM may control the overall operation of the display device 1000.

[0143] The control module CM may be a microprocessor.

[0144] For example, the control module CM starts or deactivates the display panel DP.

[0145] The control module CM may control other modules such as the image input module IIM or the audio input module AIM based on a touch signal received from the display panel DP.

[0146] The wireless communication module TM may transmit / receive radio signals to / from other terminals using Bluetooth or Wi-Fi.

[0147] The wireless communication module TM can transmit / receive voice signals using a general communication line.

[0148] The wireless communication module TM includes a transmitter TM1 for modulating and transmitting signals to be sent and a receiver TM2 for demodulating received signals.

[0149] The image input module IIM can process image signals and convert them into image data that can be displayed on the display panel DP.

[0150] The audio input module AIM can receive external sound signals through a microphone in modes such as a recording mode or a voice recognition mode, and convert the external sound signals into electronic voice data.

[0151] The external interface IF can be used as an interface for connecting to an external charger, a wired / wireless data port, and a card socket (e.g., a memory card, a subscriber identity module (SIM) / user identity module (UIM) card), etc.

[0152] The second electronic module EM2 can include an audio output module AOM, a light emitting module LM, a light receiving module LRM, and a camera module CMM. Some of these modules can be optical elements ES and are located on the rear surface of the display panel DP, as Figure 1 and Figure 2 shown.

[0153] The optical element ES can include a light emitting module LM, a light receiving module LRM, and a camera module CMM.

[0154] In addition, the second electronic module EM2 is directly mounted on the motherboard, mounted on a separate board and electrically connected to the display panel DP through a connector, or connected to the first electronic module EM1.

[0155] The audio output module AOM can convert audio data received from the wireless communication module TM or audio data stored in the memory MM, and output the converted audio data to the outside.

[0156] The light emitting module LM can generate and output light.

[0157] The light emitting module LM can output infrared rays.

[0158] For example, the light emitting module LM can include a light emitting diode (LED) element.

[0159] For example, the light receiving module LRM can detect infrared rays.

[0160] When infrared rays of a predetermined level or higher are detected, the light receiving module LRM can be activated.

[0161] The light receiving module LRM may include a Complementary Metal Oxide Semiconductor (CMOS) sensor.

[0162] After the infrared light generated by the light emitting module LM is output, the infrared light is reflected by an external object (e.g., a user's finger or face), and the reflected infrared light may be incident on the light receiving module LRM.

[0163] The camera module CMM may capture an external image.

[0164] In one embodiment, the optical element ES may additionally include a light detection sensor or a thermal detection sensor.

[0165] The optical element ES may detect an external object received through the front surface, or provide a sound signal such as voice to the outside through the front surface.

[0166] Additionally, the optical element ES may include multiple elements and is not limited to one embodiment.

[0167] Referring again to Figure 2 , the housing HM may be coupled to the cover window WU.

[0168] The cover window WU may be disposed on the front surface of the housing HM.

[0169] The housing HM may be coupled to the cover window WU to provide a predetermined accommodation space.

[0170] The display panel DP and the optical element ES may be accommodated in the predetermined accommodation space provided between the housing HM and the cover window WU.

[0171] The housing HM may include a material having relatively high rigidity.

[0172] For example, the housing HM may include a plurality of frames and / or plates made of glass, plastic, metal, or a combination thereof.

[0173] The housing HM may stably protect the components accommodated in the internal space of the display device 1000 from external impacts.

[0174] Hereinafter, a sensing electrode according to an embodiment will be described with reference to Figure 4 .

[0175] Figure 4 is a schematic plan view of a sensing electrode in a display panel according to an embodiment.

[0176] Referring to Figure 4 , a sensing area TCA including a plurality of sensing electrodes 520 and 540 may be placed above the display area DA and above the light emitting diodes to identify a touch.

[0177] The sensing area TCA may be the area where the touch sensor TS is located.

[0178] In the non-display area PA, signal lines or voltage lines (e.g., driving voltage lines, low driving voltage lines, etc.) for transmitting signals or voltages to pixels formed in the display area DA may exist, and pad portions connected to the signal lines or voltage lines may be located in the non-display area PA.

[0179] In addition, a plurality of sensing wirings 512 and 522 may be further placed in the non-display area PA.

[0180] The plurality of sensing wirings 512 and 522 may be connected to a plurality of sensing electrodes 520 and 540.

[0181] The sensing area TCA may include a plurality of sensing electrodes 520 and 540.

[0182] The plurality of sensing electrodes 520 and 540 may include a plurality of first sensing electrodes 520 and a plurality of second sensing electrodes 540 that are electrically separated from each other.

[0183] According to an embodiment, the plurality of first sensing electrodes 520 may be sensing input electrodes, and the plurality of second sensing electrodes 540 may be sensing output electrodes.

[0184] However, the present disclosure is not limited thereto, and the plurality of first sensing electrodes 520 may be sensing output electrodes and the plurality of second sensing electrodes 540 may be sensing input electrodes.

[0185] The plurality of first sensing electrodes 520 and the plurality of second sensing electrodes 540 may be distributed or arranged in a mesh shape so as not to overlap each other in the sensing area TCA.

[0186] The plurality of first sensing electrodes 520 are arranged along one of the column direction and the row direction (refer to Figure 4 , the second direction DR2), and the plurality of first sensing electrodes 520 are electrically connected to each other through a first sensing electrode connection portion 521 (also referred to as a bridge).

[0187] The plurality of second sensing electrodes 540 are arranged along the other direction of the column direction and the row direction (refer to Figure 4 , the first direction DR1), and the plurality of second sensing electrodes 540 are electrically connected to each other through a second sensing electrode connection portion 541.

[0188] The plurality of first sensing electrodes 520 and the plurality of second sensing electrodes 540 may be placed on the same conductive layer.

[0189] According to other embodiments, the plurality of first sensing electrodes 520 and the plurality of second sensing electrodes 540 may be placed on different conductive layers.

[0190] Reference Figure 4 ,The first sensing electrode 520 and the second sensing electrode 540 may have a rhombus shape, but are not limited thereto. For example, depending on the embodiment, the first sensing electrode 520 and the second sensing electrode 540 may have a polygonal shape such as a quadrilateral shape or a hexagonal shape, a circular shape, or an elliptical shape.

[0191] Although the plurality of first sensing electrodes 520 and the plurality of second sensing electrodes 540 are shown as an integrated structure of a rhombus, it should be understood that a rhombus structure may have an opening and a structure in which a linear structure is arranged in a grid form therein.

[0192] In this case, the opening may correspond to a region where the light emitting diode emits light upward.

[0193] In addition, depending on the embodiment, the integrated structure of the plurality of first sensing electrodes 520 and the plurality of second sensing electrodes 540 may have a shape further including an extension portion to improve the sensitivity of the touch sensor TS.

[0194] The first sensing electrode 520 and the second sensing electrode 540 may be formed of a transparent conductor or an opaque conductor.

[0195] For example, the first sensing electrode 520 and the second sensing electrode 540 may include a transparent conductive oxide (TCO), and the transparent conductive oxide (TCO) may include at least one of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), carbon nanotubes (CNT), and graphene.

[0196] In addition, the first sensing electrode 520 and the second sensing electrode 540 may have a multi-layer structure including two or more metal layers.

[0197] For example, the first sensing electrode 520 and the second sensing electrode 540 may have a three-layer structure in which Ti / Al / Ti is stacked.

[0198] In addition, the first sensing electrode 520 and the second sensing electrode 540 may include a plurality of openings.

[0199] The openings formed in the first sensing electrode 520 and the second sensing electrode 540 are for allowing the light emitted from the light emitting diode to be emitted forward without interference.

[0200] When the first sensing electrode 520 and the second sensing electrode 540 are located on the same layer, one of the first sensing electrode connection portion 521 and the second sensing electrode connection portion 541 is located on the same layer as the first sensing electrode 520 and the second sensing electrode 540. The other of the first sensing electrode connection portion 521 and the second sensing electrode connection portion 541 may be located on a different layer from the first sensing electrode 520 and the second sensing electrode 540.

[0201] As a result, the plurality of first sensing electrodes 520 and the plurality of second sensing electrodes 540 can be electrically separated.

[0202] The sensing electrode connection portion located on the other layer may be located on a layer above or below the first sensing electrode 520 and the second sensing electrode 540. The embodiments described below will focus on the embodiments in which the sensing electrode connection portion is located on the lower layer (e.g., the layer closer to the substrate SUB).

[0203] A plurality of sensing wirings 512 and 522 respectively connected to the plurality of first sensing electrodes 520 and the plurality of second sensing electrodes 540 are placed in the non-display area PA.

[0204] The plurality of first sensing wirings 512 may be connected to the plurality of second sensing electrodes 540 arranged in the first direction DR1, and the plurality of second sensing wirings 522 may be connected to the plurality of first sensing electrodes 520 arranged in the second direction DR2.

[0205] Figure 4 The figure illustrates a mutual capacitance type sensing unit that senses touch using two sensing electrodes (e.g., the first sensing electrode 520 and the second sensing electrode 540).

[0206] However, depending on the embodiment, the sensing unit may be formed as a self-capacitance type sensing unit that senses touch using only one sensing electrode.

[0207] Hereinafter, reference will be made to Figure 5 The display device according to an embodiment will be further described, focusing on a cross-sectional view of the display area DA.

[0208] Figure 5 is a cross-sectional view illustrating a part of the display area in the display panel according to an embodiment.

[0209] Reference Figure 5 , the substrate SUB may include a rigid material such as glass or a flexible material such as plastic or polyimide.

[0210] A buffer layer BF may be further placed on the substrate SUB to flatten the surface of the substrate SUB and block (or prevent) the penetration of impurity elements.

[0211] The buffer layer BF may include an inorganic material and may include, for example, an inorganic insulating material such as silicon nitride (SiN x ), silicon oxide (SiO x ), or silicon oxynitride (SiO x N y ).

[0212] Depending on the embodiment, the buffer layer BF may have a single-layer or multi-layer structure including an inorganic insulating material.

[0213] A barrier layer may be further placed on the substrate SUB.

[0214] For example, the barrier layer may be placed between the substrate SUB and the buffer layer BF.

[0215] The barrier layer may include an inorganic insulating material such as silicon nitride (SiN x ), silicon oxide (SiO x ), or silicon oxynitride (SiO x N y ).

[0216] The barrier layer may have a single-layer or multi-layer structure including an inorganic insulating material.

[0217] The semiconductor layer ACT may be placed on the buffer layer BF.

[0218] The semiconductor layer ACT may include any one of amorphous silicon, polycrystalline silicon, and oxide semiconductors.

[0219] For example, the semiconductor layer ACT may include low-temperature polycrystalline silicon (LTPS) or an oxide semiconductor including at least one of zinc (Zn), indium (In), gallium (Ga), tin (Sn), and mixtures thereof.

[0220] For example, the semiconductor layer ACT may include indium gallium zinc oxide (IGZO).

[0221] The semiconductor layer ACT may include a channel region C, a source region S, and a drain region D distinguished according to whether it is doped with impurities.

[0222] The source region S and the drain region D may have a conductivity corresponding to that of a conductor.

[0223] The first gate insulating layer GI1 may cover the semiconductor layer ACT and the substrate SUB. The first gate insulating layer GI1 may be provided on the buffer layer BF.

[0224] The first gate insulating layer GI1 may include an inorganic insulating material such as silicon nitride (SiN x ), silicon oxide (SiO x ), or silicon oxynitride (SiO x N y) of inorganic insulating material.

[0225] The first gate insulating layer GI1 may have a single-layer or multi-layer structure including the inorganic insulating material described above.

[0226] The gate electrode GE1 may be placed on the first gate insulating layer GI1.

[0227] The gate electrode GE1 may include a metal or metal alloy such as copper (Cu), molybdenum (Mo), aluminum (Al), silver (Ag), chromium (Cr), tantalum (Ta), or titanium (Ti).

[0228] The gate electrode GE1 may be a single layer or multiple layers.

[0229] The region of the semiconductor layer ACT that overlaps with the gate electrode GE1 in the plane may be the channel region C. In other words, the gate electrode GE1 may overlap with the channel region C.

[0230] The second gate insulating layer GI2 is placed on the gate electrode GE1. The second gate insulating layer GI2 may contact the first gate insulating layer GI1.

[0231] The second gate insulating layer GI2 may include an inorganic insulating material such as silicon nitride (SiN x ), silicon oxide (SiO x ), or silicon oxynitride (SiO x N y ).

[0232] The second gate insulating layer GI2 may have a single-layer or multi-layer structure including the inorganic insulating material described above.

[0233] The capacitor electrode GE2 may be placed on the second gate insulating layer GI2.

[0234] The capacitor electrode GE2 may overlap with the gate electrode GE1 to form a capacitor.

[0235] The first insulating layer IL1 is placed on the capacitor electrode GE2.

[0236] The first insulating layer IL1 may include an inorganic insulating material such as silicon nitride (SiN x ), silicon oxide (SiO x ), or silicon oxynitride (SiO x N y ).

[0237] The first insulating layer IL1 may have a single-layer or multi-layer structure including the inorganic insulating material described above.

[0238] The source electrode SE and the drain electrode DE may be placed on the first insulating layer IL1.

[0239] The source electrode SE and the drain electrode DE are respectively connected to the source region S and the drain region D of the semiconductor layer ACT through openings formed in the first insulating layer IL1, the second gate insulating layer GI2, and the first gate insulating layer GI1. For example, the source electrode SE can be in direct contact with the source region S through contact holes in the first insulating layer IL1, the second gate insulating layer GI2, and the first gate insulating layer GI1. Similarly, the drain electrode DE can be in direct contact with the drain region D through contact holes in the first insulating layer IL1, the second gate insulating layer GI2, and the first gate insulating layer GI1.

[0240] Accordingly, the aforementioned semiconductor layer ACT, gate electrode GE, source electrode SE, and drain electrode DE form a transistor.

[0241] Depending on the embodiment, the transistor may only include the source region S and the drain region D of the semiconductor layer ACT, without including the source electrode SE and the drain electrode DE.

[0242] The source electrode SE and the drain electrode DE are aluminum (Al), copper (Cu), silver (Ag), gold (Au), platinum (Pt), palladium (Pd), nickel (Ni), molybdenum (Mo), tungsten (W), titanium (Ti), chromium (Cr), tantalum (Ta), another metal, or a metal alloy.

[0243] The source electrode SE and the drain electrode DE can be formed of a single layer or multiple layers.

[0244] According to another embodiment, the source electrode SE and the drain electrode DE can consist of three layers including an upper layer, a middle layer, and a lower layer, and the upper layer and the lower layer can include titanium (Ti) and the middle layer can include aluminum (Al).

[0245] The second insulating layer IL2 can be placed on the source electrode SE and the drain electrode DE.

[0246] The second insulating layer IL2 covers the source electrode SE and the drain electrode DE. The second insulating layer IL2 can also cover the first insulating layer IL1.

[0247] The second insulating layer IL2 is used to planarize the surface of the substrate SUB having the transistor, can contain one or more substances, and can be an organic insulating film selected from the group consisting of polyimide, polyamide, acrylic resin, benzocyclobutene, and phenolic resin.

[0248] The first electrode E1 can be placed on the second insulating layer IL2.

[0249] The first electrode E1 is also referred to as the anode electrode and can be composed of a single layer including a transparent conductive oxide layer or a metal material, or multiple layers including a transparent conductive oxide layer or a metal material.

[0250] The transparent conductive oxide layer may include indium tin oxide (ITO), poly-ITO, indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), and indium tin zinc oxide (ITZO).

[0251] The metal material may include silver (Ag), molybdenum (Mo), copper (Cu), gold (Au), and aluminum (Al).

[0252] The first electrode E1 may be physically and electrically connected to the drain electrode DE through an opening in the second insulating layer IL2. For example, the first electrode E1 may be in direct contact with the drain electrode DE through a contact hole in the second insulating layer IL2.

[0253] Accordingly, the first electrode E1 may receive the output current to be transmitted from the drain electrode DE to the light-emitting layer EML.

[0254] The pixel defining layer PDL and the spacer SPC may be placed on the first electrode E1 and the second insulating layer IL2. For example, the pixel defining layer PDL may be placed on the second insulating layer IL2 and the first electrode E1, and the spacer SPC may be placed on the pixel defining layer PDL.

[0255] The pixel defining layer PDL includes a pixel opening OP1 that overlaps at least a part of the first electrode E1.

[0256] In this case, the pixel opening OP1 may overlap the center of the first electrode E1 and may not overlap the edge of the first electrode E1. The edge of the first electrode E1 may overlap the pixel defining layer PDL.

[0257] Accordingly, the size of the pixel opening OP1 may be smaller than the size of the first electrode E1.

[0258] The pixel defining layer PDL may define the formation position of the light-emitting layer EML such that the light-emitting layer EML may be placed on the exposed portion of the upper surface of the first electrode E1.

[0259] Each of the pixel defining layer PDL and the spacer SPC may be an organic insulating layer including at least one material selected from the group consisting of polyimide, polyamide, acrylic resin, benzocyclobutene, and phenolic resin. The pixel defining layer PDL may be formed of a black pixel defining layer (BPDL) containing a black pigment.

[0260] The light-emitting layer EML may be placed within the pixel opening OP1 separated by the pixel defining layer PDL.

[0261] The light-emitting layer EML may include an organic material that emits red, green, or blue light.

[0262] The light-emitting layer EML that emits red, green, or blue light may include a low-molecular or high-molecular organic material.

[0263] Although in Figure 5 the light-emitting layer EML is shown as a single layer, auxiliary layers such as an electron injection layer, an electron transport layer, a hole transport layer, and a hole injection layer may also be included above and below the light-emitting layer EML. For example, the hole injection layer and the hole transport layer may be placed below the light-emitting layer EML, and the electron transport layer and the electron injection layer may be placed above the light-emitting layer EML.

[0264] The second electrode E2 may be placed on the pixel defining layer PDL and the light-emitting layer EML.

[0265] The second electrode E2 may also be referred to as a cathode electrode, and the second electrode E2 may include at least one selected from lithium (Li), silver (Ag), magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), ITO, and IZO, but is not limited to these.

[0266] In addition, the second electrode E2 may be semi-transparent, and in this case, a microcavity may be formed together with the first electrode E1.

[0267] According to the structure of the microcavity, due to the spacing and characteristics between the two electrodes E1 and E2, light of a specific wavelength is emitted upward, and as a result, red, green, or blue can be displayed.

[0268] The first electrode E1, the light-emitting layer EML, and the second electrode E2 may form a light-emitting element ED.

[0269] The encapsulation layer ENC may be placed on the second electrode E2.

[0270] The encapsulation layer ENC may include at least one inorganic layer and at least one organic layer.

[0271] In this embodiment, the encapsulation layer ENC may include a first inorganic encapsulation layer EIL1, an organic encapsulation layer EOL, and a second inorganic encapsulation layer EIL2. The first inorganic encapsulation layer EIL1 may be in direct contact with the second electrode E2.

[0272] However, this is only an example, and the number of inorganic layers and organic layers constituting the encapsulation layer ENC may be changed differently.

[0273] The lower sensing electrode part MTL1 and the upper sensing electrode part MTL2 may be placed on the encapsulation layer ENC. For example, the lower sensing electrode part MTL1 may be in direct contact with the second inorganic encapsulation layer EIL2. In addition, the lower sensing electrode part MTL1 and the upper sensing electrode part MTL2 may be in direct contact with each other.

[0274] Although the present specification has a configuration in which the lower sensing electrode portion MTL1 is directly placed on the encapsulation layer ENC, a lower sensing insulating layer may be placed between the encapsulation layer ENC and the lower sensing electrode portion MTL1, but is not limited thereto.

[0275] The lower sensing electrode portion MTL1 may include at least one of the aforementioned plurality of sensing electrodes 520 and 540, the first sensing electrode connection portion 521, and the second sensing electrode connection portion 541.

[0276] The upper sensing electrode portion MTL2 may include the remaining portions of the plurality of sensing electrodes 520 and 540, the first sensing electrode connection portion 521, and the second sensing electrode connection portion 541 described above.

[0277] For example, the lower sensing electrode portion MTL1 includes the plurality of sensing electrodes 520 and 540 and the first sensing electrode connection portion 521, and the upper sensing electrode portion MTL2 includes the second sensing electrode connection portion 541.

[0278] Alternatively, according to an embodiment, the lower sensing electrode portion MTL1 includes the second sensing electrode connection portion 541, and the upper sensing electrode portion MTL2 includes the plurality of sensing electrodes 520 and 540 and the first sensing electrode connection portion 521.

[0279] However, the present disclosure is not limited to this configuration and may be modified in various embodiments.

[0280] This specification describes an embodiment in which the lower sensing electrode portion MTL1 includes a sensing electrode connection portion.

[0281] The first sensing insulating layer TL1 may be placed on the encapsulation layer ENC and the lower sensing electrode portion MTL1.

[0282] The first sensing insulating layer TL1 may include an inorganic insulating material or an organic insulating material.

[0283] The inorganic insulating material may include at least one of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, and silicon oxynitride.

[0284] The organic insulating material may include at least one of acrylic resin, methacrylic resin, polyisoprene, vinyl resin, epoxy resin, urethane resin, cellulose resin, and perylene resin.

[0285] The upper sensing electrode portion MTL2 may be placed on the first sensing insulating layer TL1.

[0286] As described above, the upper sensing electrode portion MTL2 may include at least one of a plurality of sensing electrodes 520 and 540, a first sensing electrode connection portion 521, and a second sensing electrode connection portion 541.

[0287] The upper sensing electrode portion MTL2 may include a plurality of sensing electrodes 520 and 540 and a first sensing electrode connection portion 521.

[0288] The upper sensing electrode portion MTL2 may be electrically connected to the lower sensing electrode portion MTL1 through a contact hole formed in the first sensing insulating layer TL1.

[0289] The display device according to an embodiment may further include a reflective layer MTL3 disposed on the same layer as the upper sensing electrode portion MTL2. For example, the reflective layer MTL3 may be disposed between a pair of upper sensing electrode portions MTL2.

[0290] The reflective layer MTL3 may be formed in the same process as the upper sensing electrode portion MTL2 and may include the same material.

[0291] The reflective layer MTL3 may be disposed on the first sensing insulating layer TL1. A part of the reflective layer MTL3 may penetrate into the first sensing insulating layer TL1.

[0292] The reflective layer MTL3 may overlap with the light-emitting layer EML.

[0293] An etching process may be performed in the first sensing insulating layer TL1 to include a contact hole CNT for electrically connecting the lower sensing electrode portion MTL1 and the upper sensing electrode portion MTL2.

[0294] In the etching process, a recess RC may be formed in a region overlapping with the reflective layer MTL3.

[0295] The recess RC may have a shape recessed from the flat upper surface of the first sensing insulating layer TL1 toward the substrate SUB.

[0296] The recess RC may be recessed from the upper surface of the first sensing insulating layer TL1 at the same height as the height of the contact hole CNT.

[0297] The reflective layer MTL3 may have a shape corresponding to the shape of the first sensing insulating layer TL1 in contact with the reflective layer MTL3.

[0298] The reflective layer MTL3 may have a concave shape in cross section along the recess RC of the first sensing insulating layer TL1.

[0299] The lower surface of the reflective layer MTL3 may have a curved shape along the recess RC.

[0300] Alternatively, depending on the shape of the recess RC, the lower surface of the reflective layer MTL3 may have a stepped or inclined surface.

[0301] The reflective layer MTL3 can reflect the light L1 emitted from the light-emitting layer EML back from the lower surface of the reflective layer MTL3 toward the second electrode E2.

[0302] The light L1 reflected toward the second electrode E2 can be reflected from the second electrode E2 toward the outside of the display device.

[0303] The second sensing insulating layer TL2 can be disposed on the upper sensing electrode portion MTL2 and the reflective layer MTL3.

[0304] The second sensing insulating layer TL2 can include an inorganic insulating material or an organic insulating material.

[0305] The inorganic insulating material can include at least one of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, and silicon oxynitride.

[0306] The organic insulating material can include at least one of acrylic resin, methacrylic resin, polyisoprene, vinyl resin, epoxy resin, urethane resin, cellulose resin, and perylene resin.

[0307] The light-shielding layers BM1 and BM2 and the color filter CF can be disposed on the second sensing insulating layer TL2.

[0308] The light-shielding layers BM1 and BM2 can include a first light-shielding layer BM1 and a second light-shielding layer BM2.

[0309] The first light-shielding layer BM1 can be disposed to overlap with the lower sensing electrode portion MTL1 and the upper sensing electrode portion MTL2, or can be disposed to overlap with at least a part of the pixel defining layer PDL, and can be spaced apart from the first electrode E1 without overlapping with the first electrode E1.

[0310] With this configuration, the first electrode E1 and the light-emitting layer EML capable of displaying an image are prevented from being covered by the first light-shielding layer BM1, the lower sensing electrode portion MTL1, and the upper sensing electrode portion MTL2.

[0311] The second light-shielding layer BM2 can overlap with the reflective layer MTL3.

[0312] The second light-shielding layer BM2 can completely cover the reflective layer MTL3.

[0313] The second light-shielding layer BM2 can overlap with the first electrode E1 and the light-emitting layer EML. The second light-shielding layer BM2 can not completely cover the first electrode E1 and the light-emitting layer EML.

[0314] The second light-shielding layer BM2 can absorb the external light L2 incident on the light-emitting region and reduce the reflection of the external light.

[0315] The color filter CF can be disposed on the first light-shielding layer BM1, the second light-shielding layer BM2, and the second sensing insulating layer TL2.

[0316] The color filter CF includes a red color filter that transmits red light, a green color filter that transmits green light, and a blue color filter that transmits blue light.

[0317] Each color filter CF can be disposed to overlap with the first electrode E1 of the light-emitting element ED in a plane.

[0318] Since the light emitted from the light-emitting layer EML can be emitted while being changed to a corresponding color when passing through the color filter CF, all the light emitted from the light-emitting layer EML can have the same color. In other words, when the light emitted from the light-emitting layer EML passes through the color filter CF, it can be changed to a specific color. Therefore, all the light emitted from the light-emitting layer EML appears to be consistent in color.

[0319] However, in the light-emitting layer EML, light of different colors can be emitted, and the displayed color can be enhanced by allowing the light to pass through the color filter CF of the same color.

[0320] The first light-shielding layer BM1 can be disposed between the color filters CF.

[0321] Depending on the embodiment, the color filter CF can be replaced by a color conversion layer or can further include a color conversion layer.

[0322] The color conversion layer can include quantum dots.

[0323] A planarization layer TL3 covering the color filter CF is disposed on the color filter CF.

[0324] The planarization layer TL3 is used to planarize the upper surface of the display panel and can be a transparent organic insulating layer including at least one material selected from the group consisting of polyimide, polyamide, acrylic resin, benzocyclobutene, and phenolic resin.

[0325] According to an embodiment, a low refractive index layer and a planarization layer can be further disposed on the planarization layer TL3 to improve the front visibility and light-emitting efficiency of the display panel.

[0326] Light can be emitted while being refracted to the front surface by the low refractive index layer and the planarization layer having a high refractive property.

[0327] In this case, depending on the embodiment, the low refractive index layer and the planarization layer can be directly disposed on the color filter CF, and the planarization layer TL3 can be omitted.

[0328] In this embodiment, the polarizing plate is not included on the planarization layer TL3.

[0329] When external light is incident on and reflected from the sidewall of the pixel opening OP1 of the pixel defining layer PDL or the first electrode E1, the polarizing plate can be used to prevent degradation of the display quality when recognized by the user.

[0330] However, the polarizing plate not only reduces the reflection of external light but also reduces the light emitted from the light emitting layer EML, such that more power is consumed to display a specific brightness.

[0331] To reduce such power consumption, the light emitting display device of this embodiment may not include a polarizing plate.

[0332] Hereinafter, reference will be made to Figure 6 and Figure 7 to describe the shape of the second light shielding layer BM2 formed in the display area DA.

[0333] Figure 6 is a schematic plan view showing a plurality of pixels according to an embodiment, and Figure 7 is a plan view showing Figure 6 a part of

[0334] Figure 6 and Figure 7 show the pixel openings OP1, OP2, and OP3 of the pixel defining layer PDL corresponding to the light emitting layers EML that emit the three primary colors of red, green, and blue, and the second light shielding layer BM2.

[0335] The display area DA according to an embodiment may include a first pixel PX1 for emitting red light, a second pixel PX2 for emitting green light, and a third pixel PX3 for emitting blue light.

[0336] For example, as shown in Figure 6 , the first pixel PX1 and the second pixel PX2 are alternately arranged in a column along the second direction DR2, and in another column adjacent to this column, the third pixel PX3 is repeatedly arranged.

[0337] However, the present disclosure is not limited to this arrangement, and the first pixel PX1, the second pixel PX2, and the third pixel PX3 may be arranged in different forms.

[0338] The second light shielding layer BM2 includes a second-1 sub light shielding layer BM2a overlapping with the first pixel PX1, a second-2 sub light shielding layer BM2b overlapping with the second pixel PX2, and a second-3 sub light shielding layer BM2c overlapping with the third pixel PX3.

[0339] The second-1 sub-blocking layer BM2a can overlap with the light-emitting layer EML that emits red light, the second-2 sub-blocking layer BM2b can overlap with the light-emitting layer EML that emits green light, and the second-3 sub-blocking layer BM2c can overlap with the light-emitting layer EML that emits blue light.

[0340] The second-1 sub-blocking layer BM2a, the second-2 sub-blocking layer BM2b, and the second-3 sub-blocking layer BM2c have the same elliptical shape.

[0341] The second-1 sub-blocking layer BM2a, the second-2 sub-blocking layer BM2b, and the second-3 sub-blocking layer BM2c have major axes and minor axes of the same length.

[0342] Each of the second-1 sub-blocking layer BM2a, the second-2 sub-blocking layer BM2b, and the second-3 sub-blocking layer BM2c has an elliptical planar shape with the same eccentricity.

[0343] Each of the second-1 sub-blocking layer BM2a, the second-2 sub-blocking layer BM2b, and the second-3 sub-blocking layer BM2c may have an eccentricity of 0.2 or greater and 0.85 or less.

[0344] Here, the ellipse has two foci. For example, the ellipse may have a shape connecting points where the sum of the distances to the two foci is constant, and may have a major axis and a minor axis.

[0345] On the other hand, the eccentricity of the ellipse is a value obtained by dividing the distance between the two foci by the length of the major axis of the ellipse.

[0346] If the eccentricity is 0, it is a circle, and if the eccentricity is 1, it forms a parabola. Therefore, the ellipse has an eccentricity value greater than 0 and less than 1.

[0347] The ratio of the major axis to the minor axis of the second-1 sub-blocking layer BM2a may be 1:1 to 2:1.

[0348] When the ratio of the major axis to the minor axis of the second-1 sub-blocking layer BM2a exceeds 2:1, as the area occupied by the second-1 sub-blocking layer BM2a decreases, the reflectance of external light may increase.

[0349] In addition, the length of the major axis of the second-1 sub-blocking layer BM2a may be shorter than the length of the short side of the first pixel PX1.

[0350] This can enable the second-1 sub-blocking layer BM2a to rotate at various angles within the first pixel PX1.

[0351] The display device according to the embodiment includes a plurality of second-1 sub-blocking layers BM2a.

[0352] When the angle formed by the major axis of the second-1 sub-light-shielding layer BM2a and the first direction DR1 is the first angle θ1, the first angle θ1 can have at least two different angular values.

[0353] For example, the first angle θ1 can have at least three different angular values, at least four different angular values, or at least five different angular values.

[0354] The major axes of the plurality of second-1 sub-light-shielding layers BM2a can be arranged differently at irregular intervals, or arranged differently at regular intervals.

[0355] In an embodiment in which the major axes of the second-1 sub-light-shielding layers BM2a are arranged at unequal intervals, this arrangement can be made to reduce the diffraction pattern, or this arrangement can be due to process errors.

[0356] The major axes of the plurality of second-1 sub-light-shielding layers BM2a can be arranged differently at intervals of 90 degrees or less, 60 degrees or less, 45 degrees or less, or 36 degrees or less.

[0357] For example, when the angles of the major axes of the second-1 sub-light-shielding layers BM2a are formed at intervals of 36 degrees and one major axis has 0 degrees with respect to the first direction DR1, the other major axes can have angles of 36 degrees, 72 degrees, 108 degrees, and 144 degrees with respect to the first direction DR1, for a total of 5 angles.

[0358] To check these five angles, divide the 180-degree angle by 5 (which is the number of directions). This calculation is based on the 180-degree division to determine the interval between the angles of the major axes.

[0359] The ratio of the major axis to the minor axis of the second-2 sub-light-shielding layer BM2b can be 1:1 to 2:1.

[0360] When the ratio of the major axis to the minor axis of the second-2 sub-light-shielding layer BM2b exceeds 2:1, as the area occupied by the second-2 sub-light-shielding layer BM2b decreases, the reflectance of external light can increase.

[0361] In addition, the length of the major axis of the second-2 sub-light-shielding layer BM2b can be shorter than the length of the short side of the second pixel PX2.

[0362] This can enable the second-2 sub-light-shielding layer BM2b to rotate at various angles within the second pixel PX2.

[0363] The display device according to the embodiment includes a plurality of second-2 sub-light-shielding layers BM2b.

[0364] When the angle formed by the major axis of the second-2 sub-light-shielding layer BM2b and the first direction DR1 is the second angle θ2, the second angle θ2 can have at least two different angular values.

[0365] For example, the second angle θ2 can have at least three different angular values, at least four different angular values, or at least five different angular values.

[0366] The major axes of the plurality of second-2 sub-light-shielding layers BM2b can be arranged differently at irregular intervals, or arranged differently at regular intervals.

[0367] In an embodiment where the major axes of the second-2 sub-light-shielding layers BM2b are arranged at unequal intervals, they can be arranged to reduce the diffraction pattern, or they can be arranged at unequal intervals due to process errors.

[0368] The major axes of the plurality of second-2 sub-light-shielding layers BM2b can be arranged differently at intervals of 90 degrees or less, 60 degrees or less, 45 degrees or less, or 36 degrees or less.

[0369] For example, when the angles of the major axes of the second-2 sub-light-shielding layers BM2b are formed at intervals of 36 degrees and one major axis has 0 degrees with respect to the first direction DR1, the other major axes can have angles of 36 degrees, 72 degrees, 108 degrees, and 144 degrees with respect to the first direction DR1, for a total of 5 angles.

[0370] To determine these five angles, divide the 180-degree angle by 5 (which is the number of directions). This method calculates the interval between the angles of the major axes. Since the two angles with a 180-degree angle in the 360-degree angle are substantially the same as the directions of the major axes of the ellipse, the calculation of the interval is based on 180 degrees divided by the number.

[0371] The ratio of the major axis to the minor axis of the second-3 sub-light-shielding layer BM2c can be from 1:1 to 2:1.

[0372] When the ratio of the major axis to the minor axis of the second-3 sub-light-shielding layer BM2c exceeds 2:1, as the area occupied by the second-3 sub-light-shielding layer BM2c decreases, the reflectance of external light can increase.

[0373] In addition, the length of the major axis of the second-3 sub-light-shielding layer BM2c can be shorter than the length of the short side of the third pixel PX3.

[0374] This can enable the second-3 sub-light-shielding layer BM2c to rotate at various angles within the third pixel PX3.

[0375] The display device according to an embodiment includes a plurality of second-3 sub-light-shielding layers BM2c.

[0376] When the angle formed by the major axis of the second-3 sub-light-shielding layer BM2c and the first direction DR1 is the third angle θ3, the third angle θ3 can have at least two different angular values.

[0377] For example, the third angle θ3 can have at least three different angular values, at least four different angular values, or at least five different angular values.

[0378] The major axes of the plurality of second-3 sub-light-shielding layers BM2c can be arranged differently at irregular intervals or at regular intervals.

[0379] In an embodiment in which the major axes of the second-3 sub-light-shielding layers BM2c are arranged at unequal intervals, they can be intentionally arranged to reduce the diffraction pattern, or can be arranged at unequal intervals due to process errors.

[0380] The major axes of the second-3 sub-light-shielding layers BM2c can be arranged differently at intervals of 90 degrees or less, 60 degrees or less, 45 degrees or less, or 36 degrees or less.

[0381] For example, when the angles of the major axes of the second-3 sub-light-shielding layers BM2c are formed at intervals of 36 degrees and one major axis has 0 degrees with respect to the first direction DR1, the other major axes can have angles of 36 degrees, 72 degrees, 108 degrees, and 144 degrees with respect to the first direction DR1, a total of 5 angles.

[0382] To determine these five angles, divide the 180-degree angle by 5 (which is the number of directions). This division helps to check the intervals between the angles of the major axes. This means that the two angles with a 180-degree angle in the 360-degree angle correspond to the same direction as the major axis of the ellipse. Therefore, the calculation of the interval involves dividing 180 degrees by the number.

[0383] As discussed, the second-1 sub-light-shielding layer BM2a, the second-2 sub-light-shielding layer BM2b, and the second-3 sub-light-shielding layer BM2c each have an elliptical shape, and the directions in which the major axes of the ellipses are oriented can be arranged randomly.

[0384] As Figure 7 shown, the degree of reflection of external light can vary according to the direction of the major axis of the ellipse of the second light-shielding layer BM2.

[0385] In this case, since the major axes of the second-1 sub-light-shielding layer BM2a, the second-2 sub-light-shielding layer BM2b, and the second-3 sub-light-shielding layer BM2c are set at different angles, uniformity is obtained throughout the display device. Therefore, the second light-shielding layer BM2 can have external light reflection characteristics.

[0386] Accordingly, external light reflection characteristics such as color separation and diffraction patterns can be improved.

[0387] In the following, reference will be made to Figures 8 to 11 describe a display device according to another embodiment.

[0388] Figure 8 , Figure 9 , Figure 10 and Figure 11 are schematic plan views illustrating a plurality of pixels according to an embodiment.

[0389] Referring to Figure 8 , the second-1 sub-light-shielding layer BM2a, the second-2 sub-light-shielding layer BM2b, and the second-3 sub-light-shielding layer BM2c according to an embodiment have oval shapes with different sizes.

[0390] The second-1 sub-light-shielding layer BM2a, the second-2 sub-light-shielding layer BM2b, and the second-3 sub-light-shielding layer BM2c may have different areas. For example, the second-3 sub-light-shielding layer BM2c may be larger than each of the second-1 sub-light-shielding layer BM2a and the second-2 sub-light-shielding layer BM2b. Additionally, the second-2 sub-light-shielding layer BM2b may be smaller than the second-1 sub-light-shielding layer BM2a.

[0391] The lengths of the major axis and the minor axis of the second-1 sub-light-shielding layer BM2a, the lengths of the major axis and the minor axis of the second-2 sub-light-shielding layer BM2b, and the lengths of the major axis and the minor axis of the second-3 sub-light-shielding layer BM2c may be different.

[0392] Additionally, the ratio of the major axis to the minor axis of the second-1 sub-light-shielding layer BM2a, the ratio of the major axis to the minor axis of the second-2 sub-light-shielding layer BM2b, and the ratio of the major axis to the minor axis of the second-3 sub-light-shielding layer BM2c may be different.

[0393] Additionally, depending on the embodiment, the eccentricity of the second-1 sub-light-shielding layer BM2a, the eccentricity of the second-2 sub-light-shielding layer BM2b, and the eccentricity of the second-3 sub-light-shielding layer BM2c may be different.

[0394] Although this specification shows an embodiment in which the sizes of the second-3 sub-light-shielding layer BM2c, the second-1 sub-light-shielding layer BM2a, and the second-2 sub-light-shielding layer BM2b decrease in this order, the present disclosure is not limited thereto. For example, the sizes of the second-3 sub-light-shielding layer BM2c, the second-1 sub-light-shielding layer BM2a, and the second-2 sub-light-shielding layer BM2b may be modified differently.

[0395] The degree of reflection of red light, green light, and blue light may vary, and the sizes of the second-1 sub-light-shielding layer BM2a, the second-2 sub-light-shielding layer BM2b, and the second-3 sub-light-shielding layer BM2c may be adjusted depending on the degree of external light reflection.

[0396] Referring toFigure 9 Each of the second-1 sub-light-shielding layer BM2a, the second-2 sub-light-shielding layer BM2b, and the second-3 sub-light-shielding layer BM2c may have a triangular shape in a plan view.

[0397] Within the first pixel PX1, the second-1 sub-light-shielding layer BM2a may be disposed in a random direction.

[0398] When an angle formed between a first imaginary line passing through a vertex of the second-1 sub-light-shielding layer BM2a and a first direction DR1 is a fourth angle θ4, the fourth angle θ4 may have at least two values.

[0399] The second-1 sub-light-shielding layer BM2a may be disposed within the first pixel PX1 such that the fourth angle θ4 has various values.

[0400] The second-1 sub-light-shielding layer BM2a may be disposed such that the fourth angle θ4 has equal or unequal intervals.

[0401] Within the second pixel PX2, the second-2 sub-light-shielding layer BM2b may be disposed in a random direction.

[0402] When an angle formed between a second imaginary line passing through a vertex of the second-2 sub-light-shielding layer BM2b and a first direction DR1 is a fifth angle θ5, the fifth angle θ5 may have at least two values.

[0403] The second-2 sub-light-shielding layer BM2b may be disposed within the second pixel PX2 such that the fifth angle θ5 has various values.

[0404] The second-2 sub-light-shielding layer BM2b may be arranged such that the fifth angle θ5 has equal or unequal intervals.

[0405] Within the third pixel PX3, the second-3 sub-light-shielding layer BM2c may be disposed in a random direction.

[0406] When an angle formed between a third imaginary line passing through a vertex of the second-3 sub-light-shielding layer BM2c and a first direction DR1 is a sixth angle θ6, the sixth angle θ6 may have at least two values.

[0407] The second-3 sub-light-shielding layer BM2c may be disposed within the third pixel PX3 such that the sixth angle θ6 has various values.

[0408] The second-3 sub-light-shielding layer BM2c may be arranged such that the sixth angle θ6 has equal or unequal intervals.

[0409] According to an embodiment, the second-1 sub-light-shielding layer BM2a, the second-2 sub-light-shielding layer BM2b, and the second-3 sub-light-shielding layer BM2c may have the same area or different areas.

[0410] Reference Figure 10 , each of the second - 1 sub - light - shielding layer BM2a, the second - 2 sub - light - shielding layer BM2b, and the second - 3 sub - light - shielding layer BM2c may have a rectangular shape in a plane.

[0411] Within the first pixel PX1, the second - 1 sub - light - shielding layer BM2a may be set in a random direction. For example, the second - 1 sub - light - shielding layer BM2a may be inclined with respect to the first direction DR1 and / or the second direction DR2.

[0412] When the angle formed between a first imaginary line passing through a vertex of the second - 1 sub - light - shielding layer BM2a and the first direction DR1 is the seventh angle θ7, the seventh angle θ7 may have at least two values.

[0413] The second - 1 sub - light - shielding layer BM2a may be set within the first pixel PX1 such that the seventh angle θ7 has various values.

[0414] The second - 1 sub - light - shielding layer BM2a may be arranged such that the seventh angle θ7 has equal or unequal intervals.

[0415] Within the second pixel PX2, the second - 2 sub - light - shielding layer BM2b may be set in a random direction. For example, the second - 2 sub - light - shielding layer BM2b may be inclined with respect to the first direction DR1 and / or the second direction DR2.

[0416] When the angle formed between a second imaginary line passing through a vertex of the second - 2 sub - light - shielding layer BM2b and the first direction DR1 is the eighth angle θ8, the eighth angle θ8 may have at least two values.

[0417] The second - 2 sub - light - shielding layer BM2b may be set within the second pixel PX2 such that the eighth angle θ8 has various values.

[0418] The second - 2 sub - light - shielding layer BM2b may be arranged such that the eighth angle θ8 has equal or unequal intervals.

[0419] Within the third pixel PX3, the second - 3 sub - light - shielding layer BM2c may be set in a random direction. For example, the second - 3 sub - light - shielding layer BM2c may be inclined with respect to the first direction DR1 and / or the second direction DR2.

[0420] When the angle formed between a third imaginary line passing through any vertex of the second - 3 sub - light - shielding layer BM2c and the first direction DR1 is the ninth angle θ9, the ninth angle θ9 may have at least two values.

[0421] The second - 3 sub - light - shielding layer BM2c may be set within the third pixel PX3 such that the ninth angle θ9 has various values.

[0422] The second-3 sub-light-shielding layer BM2c can be set such that the ninth angle θ9 has equal or unequal intervals.

[0423] In addition, the second-1 sub-light-shielding layer BM2a, the second-2 sub-light-shielding layer BM2b, and the second-3 sub-light-shielding layer BM2c can have the same area or different areas depending on the embodiment.

[0424] Reference Figure 11 , each of the second-1 sub-light-shielding layer BM2a, the second-2 sub-light-shielding layer BM2b, and the second-3 sub-light-shielding layer BM2c can have a pentagonal shape in a plan view.

[0425] Within the first pixel PX1, the second-1 sub-light-shielding layer BM2a can be set in a random direction.

[0426] When the angle formed between a first imaginary line passing through a vertex of the second-1 sub-light-shielding layer BM2a and the first direction DR1 is the tenth angle θ10, the tenth angle θ10 can have at least two values.

[0427] The second-1 sub-light-shielding layer BM2a can be set within the first pixel PX1 such that the tenth angle θ10 has various values.

[0428] The second-1 sub-light-shielding layer BM2a can be arranged such that the tenth angle θ10 has equal or unequal intervals.

[0429] Within the second pixel PX2, the second-2 sub-light-shielding layer BM2b can be set in a random direction.

[0430] When the angle formed between a second imaginary line passing through a vertex of the second-2 sub-light-shielding layer BM2b and the first direction DR1 is the eleventh angle θ11, the eleventh angle θ11 can have at least two values.

[0431] The second-2 sub-light-shielding layer BM2b can be set within the second pixel PX2 such that the eleventh angle θ11 has various values.

[0432] The second-2 sub-light-shielding layer BM2b can be arranged such that the eleventh angle θ11 has equal or unequal intervals.

[0433] Within the third pixel PX3, the second-3 sub-light-shielding layer BM2c can be set in a random direction.

[0434] When the angle between a third imaginary line passing through a vertex of the second-3 sub-light-shielding layer BM2c and the first direction DR1 is the twelfth angle θ12, the twelfth angle θ12 can have at least two values.

[0435] The second-3 sub-light-shielding layer BM2c may be disposed within the third pixel PX3 such that the twelfth angle θ12 has various values.

[0436] The second-3 sub-light-shielding layer BM2c may be arranged such that the twelfth angle θ12 has equal or unequal intervals.

[0437] In addition, the second-1 sub-light-shielding layer BM2a, the second-2 sub-light-shielding layer BM2b, and the second-3 sub-light-shielding layer BM2c may have the same area or different areas depending on the embodiment.

[0438] Although the embodiments of the present disclosure have been described in detail above, the present disclosure is not limited thereto. For example, those of ordinary skill in the art can make various modifications using the teachings of the present disclosure described herein.

Claims

1. A display device, comprising: a substrate; a first electrode on the substrate; a pixel defining layer having a pixel opening, wherein the first electrode is in the pixel opening; a light-emitting layer in the pixel opening; a second electrode on the light-emitting layer and the pixel defining layer; a encapsulation layer on the second electrode; a first sensing electrode portion on the encapsulation layer; a first sensing insulating layer on the first sensing electrode portion; a second sensing electrode portion and a reflective layer disposed on the first sensing insulating layer; and a first light-shielding layer and a second light-shielding layer on the first sensing insulating layer.

2. The display device according to claim 1, wherein: at least a part of the lower surface of the reflective layer is inclined.

3. The display device according to claim 1, wherein: the second light-shielding layer includes: a second-1 sub light-shielding layer overlapping with a first pixel; a second-2 sub light-shielding layer overlapping with a second pixel; and a second-3 sub light-shielding layer overlapping with a third pixel.

4. The display device according to claim 3, wherein: the display device includes a plurality of second-1 sub light-shielding layers; each of the plurality of second-1 sub light-shielding layers has an elliptical shape and has a first major axis; and the first angle between the first major axis and the first direction has at least two values.

5. The display device according to claim 4, wherein: the first major axes of the plurality of second-1 sub light-shielding layers are randomly arranged.

6. The display device according to claim 4, wherein: the first major axes of the plurality of second-1 sub light-shielding layers are arranged at equal intervals.

7. The display device according to claim 3, wherein: the display device includes a plurality of second-2 sub light-shielding layers; each of the plurality of second-2 sub light-shielding layers has an elliptical shape and has a second major axis; the second angle between the second major axis and the first direction has at least two values; and the second major axes of the plurality of second-2 sub light-shielding layers are arranged equidistantly or randomly.

8. The display device according to claim 3, wherein: the display device includes a plurality of second-3 sub light-shielding layers; each of the plurality of second-3 sub light-shielding layers has an elliptical shape and has a third major axis; the third angle between the third major axis and the first direction has at least two values; and the third major axes of the plurality of second-3 sub light-shielding layers are arranged equidistantly or randomly.

9. The display device according to claim 3, wherein: the major axis of the second-1 sub light-shielding layer, the major axis of the second-2 sub light-shielding layer, and the major axis of the second-3 sub light-shielding layer are arranged in different directions; and / or the second-1 sub light-shielding layer, the second-2 sub light-shielding layer, and the second-3 sub light-shielding layer have different areas from each other.

10. The display device according to any one of claims 1 to 9, wherein: the second light-shielding layer overlaps with the light-emitting layer; and the first light-shielding layer overlaps with the pixel defining layer.

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