Display device

Abstract

A display device includes a display panel, a first insulating layer, a second insulating layer, and a high-refractive-index insulating layer. The display panel includes a plurality of emission regions and non-emission regions. The first insulating layer is disposed on the display panel, and a plurality of first openings are defined in the first insulating layer. A plurality of second openings corresponding to the plurality of first openings are defined in the second insulating layer, and the second insulating layer has a refractive index greater than that of the first insulating layer. The high-refractive-index insulating layer having a refractive index greater than that of the second insulating layer is disposed on the second insulating layer. The first insulating layer includes a first inclined surface defining the plurality of first openings, and the second insulating layer includes a second inclined surface defining the plurality of second openings. The first inclined surface and the second inclined surface are arranged to be spaced apart from each other in a plane.

Description

Technical Field

[0001] The present invention relates to a display device, and more particularly, to a display device having improved emission efficiency. Background Art

[0002] Display devices can be classified into self-emitting display devices and light-receiving display devices. In self-emitting display devices, light-emitting elements emit light by themselves, and in light-receiving display devices, the transmission of received light is controlled. A self-emitting display device can be, for example, an organic light-emitting display device. Light generated from an emission layer of an organic light-emitting display device can be emitted not only in a forward direction but also in a lateral direction. The emission efficiency can be determined based on the light emitted in the forward direction. That is, the light emitted in the lateral direction may cause a reduction in the emission efficiency. Summary of the Invention

[0003] Technical Problem

[0004] An object of the present invention is to provide a display device having improved emission efficiency.

[0005] Technical Solution

[0006] A display device according to an embodiment of the present invention may include a display panel, a first insulating layer, a second insulating layer, and a high-refractive-index insulating layer.

[0007] The display panel includes a plurality of emission regions and non-emission regions defined between the plurality of emission regions. The first insulating layer is disposed on the display panel and has a first refractive index. A plurality of first openings corresponding to the plurality of emission regions are defined in the first insulating layer. The second insulating layer has a second refractive index, and a plurality of second openings corresponding to the plurality of first openings are defined in the second insulating layer. The high-refractive-index insulating layer is disposed on the first insulating layer and the second insulating layer to overlap with the plurality of emission regions. The high-refractive-index insulating layer has a third refractive index greater than each of the first refractive index and the second refractive index.

[0008] The first insulating layer includes a first inclined surface defining the plurality of first openings, and the second insulating layer includes a second inclined surface defining the plurality of second openings. The first inclined surface and the second inclined surface are disposed to be spaced apart from each other in a plane.

[0009] In an embodiment of the inventive concept, a display device includes a display panel and an input sensing unit. The display panel includes a plurality of pixels, each of the pixels being provided with a light-emitting element that emits light to display an image and a thin-film encapsulation layer covering the plurality of pixels. The input sensing unit is directly disposed on the thin-film encapsulation layer.

[0010] The display panel includes a plurality of emission regions corresponding to light-emitting elements and non-emission regions defined between the emission regions, and the input sensing unit includes a first insulating layer, a second insulating layer, and a high-refractive-index insulating layer. The first insulating layer has a first refractive index, and a plurality of first openings overlapping the plurality of emission regions are defined in the first insulating layer. The second insulating layer has a second refractive index, and a plurality of second openings corresponding to the plurality of first openings are defined in the second insulating layer. The high-refractive-index insulating layer is disposed on the first insulating layer and the second insulating layer to overlap the plurality of emission regions, and has a third refractive index greater than each of the first refractive index and the second refractive index.

[0011] The first insulating layer includes a first inclined surface defining the plurality of first openings, and the second insulating layer includes a second inclined surface defining the plurality of second openings. The first inclined surface and the second inclined surface are disposed spaced apart from each other in a plane.

[0012] Advantageous Effects

[0013] According to the present invention, a display device may include a plurality of insulating layers, wherein a plurality of openings having different sizes from each other are defined in the emission regions. Among the plurality of insulating layers, the inclined surfaces defining the plurality of openings may be disposed spaced apart from each other in a plane. Accordingly, side light output at different output angles may be reflected in the forward direction through the inclined surfaces disposed at different positions, thereby improving the light efficiency of the display device. Description of the Drawings

[0014] Figure 1a is a perspective view of a display device according to an embodiment of the present invention.

[0015] Figure 1b is an exploded perspective view of a display device according to an embodiment of the present invention.

[0016] Figure 2a is along Figure 1b a cross-sectional view of the display device taken along line I-I' of

[0017] Figure 2b is a cross-sectional view of a display device according to an embodiment of the present invention.

[0018] Figure 2c is a cross-sectional view of a display device according to an embodiment of the present invention.

[0019] Figure 3 is a plan view of a display panel according to an embodiment of the present invention.

[0020] Figure 4 is a plan view of an input sensing unit according to an embodiment of the present invention.

[0021] Figure 5a is withFigure 3 An enlarged plan view of a display panel corresponding to the region FF shown in

[0022] Figure 5b It shows Figure 4 An enlarged plan view of the region FF of the input sensing unit shown in

[0023] Figure 6 A cross-sectional view of a display device taken along line II-II' according to an embodiment of the present invention. Figure 5b

[0024] Figure 7 It is Figure 6 An enlarged cross-sectional view of the partial GG shown in

[0025] Figure 8 A cross-sectional view of a display device taken along line II-II' according to another embodiment of the present invention. Figure 5b

[0026] Figure 9 It is Figure 8 An enlarged cross-sectional view of the partial HH shown in

[0027] Figure 10 It shows an enlarged plan view of the region FF of the input sensing unit according to another embodiment of the present invention. Figure 4

[0028] Figure 11 A cross-sectional view of a display device taken along line III-III' according to an embodiment of the present invention. Figure 10

[0029] Figure 12 A cross-sectional view showing a partial structure of a display device according to an embodiment of the present invention.

[0030] Figure 13 A cross-sectional view showing a partial structure of a display device according to an embodiment of the present invention. Detailed Description

[0031] In this specification, it will also be understood that when a component (or region, layer, part) is referred to as being "on", "connected to", or "coupled to" another component, the component (or region, layer, part) can be directly disposed on the one component, connected / coupled to the said another component, or there may also be an intervening third component.

[0032] Like reference numerals always denote like elements. Further, in the drawings, the thickness, ratio, and dimensions of the components are exaggerated for clarity.

[0033] ​​​​The term "and / or" includes any combination and all combinations of one or more of the associated listed items.

[0034] It will be understood that although terms such as "first" and "second" are used herein to describe various elements, these elements should not be limited by these terms. The terms are only used to distinguish one component from other components. For example, without departing from the scope of the appended claims, a first element that is referred to as the first element in an embodiment may be referred to as the second element in another embodiment. Unless otherwise specified, terms in the singular form may include the plural form.

[0035] In addition, terms such as "under", "below", "above", "on top of", etc. are used to illustrate the association relationship of components shown in the drawings. The terms may be relative concepts and are described based on the directions expressed in the drawings.

[0036] Unless otherwise defined, all terms used herein (including technical terms and scientific terms) have the same meaning as commonly understood by those of ordinary skill in the art to which this invention pertains. In addition, terms (such as those defined in a general dictionary) will be interpreted to have a meaning consistent with the context of the relevant field and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0037] The meaning of "comprising" or "including" specifies properties, quantities, steps, operations, elements, components, or combinations thereof, but does not exclude the presence or addition of other properties, quantities, steps, operations, elements, components, or combinations thereof.

[0038] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0039] Figure 1a is a perspective view of a display device according to an embodiment of the present invention, Figure 1b is an exploded perspective view of a display device according to an embodiment of the present invention. Figure 2a is along Figure 1b a cross-sectional view of the display device taken along line I-I', Figure 2b is a cross-sectional view of a display device according to an embodiment of the present invention, Figure 2c is a cross-sectional view of a display device according to an embodiment of the present invention.

[0040] Referring to Figures 1a to 2b , the display device DD may be a device activated according to an electrical signal. The display device DD may include various embodiments. For example, the display device DD may be applied to electronic devices such as smart watches, tablet computers, laptop computers, computers, smart TVs, etc.

[0041] The display device DD can display an image IM along a third direction DR3 on a display surface IS parallel to each of a first direction DR1 and a second direction DR2. The display surface IS on which the image IM is displayed can correspond to the front surface of the display device DD. The image IM can include a still image and a moving image.

[0042] In this embodiment, the front surface (or top surface) or the rear surface (or bottom surface) of each of the components can be defined based on the direction in which the image IM is displayed. The front surface and the rear surface can face each other in the third direction DR3. The normal direction of each of the front surface and the rear surface can be parallel to the third direction DR3.

[0043] The distance between the front surface and the rear surface in the third direction DR3 can correspond to the thickness of the display device DD in the third direction DR3. The directions indicated as the first direction DR1, the second direction DR2, and the third direction DR3 can be relative concepts, and thus can be changed to different directions.

[0044] The display device DD can sense an external input applied from the outside. The external input can include various types of inputs provided from the outside of the display device DD. The external input applied from the outside can be provided in various ways.

[0045] For example, the external input can include an external input that is applied to be close to or adjacent to the display device DD at a predetermined distance (e.g., hovering) and in contact with a part of the human body (such as the user's hand). Additionally, the external input can include various types such as force, pressure, temperature, light, etc.

[0046] The front surface of the display device DD can be divided into a transmissive area TA and a border area BZA. The transmissive area TA can be the area on which the image IM is displayed. The user can see the image IM through the transmissive area TA. In this embodiment, the transmissive area TA can have a rectangular shape with vertices having rounded corners. However, this is only an example. For example, the transmissive area TA can have various shapes and is not limited to any one embodiment.

[0047] The border area BZA is adjacent to the transmissive area TA. The border area BZA can have a predetermined color. The border area BZA can surround the transmissive area TA. Therefore, the shape of the transmissive area TA can be substantially defined by the border area BZA. However, this is only an example. For example, the border area BZA can be set to be adjacent to only one side of the transmissive area TA, or can be omitted. The display device DD according to an embodiment of the present invention can be implemented according to various embodiments, but is not limited to a specific embodiment.

[0048] As Figure 1b and Figure 2aAs shown in, the display device DD may include a window WM, an anti-reflection unit RPP, a display module DM, and a housing EDC. The display module DM may include a display panel DP and an input sensing unit ISP.

[0049] The window WM may be made of a transparent material capable of emitting an image. For example, the window WM may be made of glass, sapphire, plastic, etc. Although the window WM is provided as a single layer, embodiments of the present invention are not limited thereto. The window WM may include multiple layers. Although not shown, the border area BZA of the above-described display device DD may be substantially provided as an area where a material having a predetermined color is printed on one area of the window WM. As an example of the present invention, the window WM may include a light-blocking pattern WBM for defining the border area BZA. The light-blocking pattern WBM may be, for example, a colored organic film formed by a coating method.

[0050] The display panel DP according to an embodiment of the present invention may be an emissive display panel, but is not particularly limited thereto. For example, the display panel DP may be an organic light-emitting display panel and a quantum dot light-emitting display panel. The light-emitting layer of the organic light-emitting display panel may include an organic light-emitting material. The light-emitting layer of the quantum dot light-emitting display panel may include quantum dots, quantum rods, etc. Hereinafter, an organic light-emitting display panel will be described as an example of the display panel DP.

[0051] Referring to Figure 2a , the input sensing unit ISP may be directly disposed on the display panel DP. According to an embodiment of the present invention, the input sensing unit ISP may be disposed on the display panel DP through a continuous process. That is, when the input sensing unit ISP is directly disposed on the display panel DP, an adhesive film may not be disposed between the input sensing unit ISP and the display panel DP. However, embodiments of the present invention are not limited thereto. That is, as Figure 2b shown in, an adhesive film AF3 (hereinafter, referred to as a third adhesive film) may be disposed between the input sensing unit ISP and the display panel DP. In this case, the input sensing unit ISP and the display panel DP may not be manufactured through a continuous process. Therefore, after manufacturing the input sensing unit ISP through a process separate from the process of forming the display panel DP, the input sensing unit ISP may be fixed to the top surface of the display panel DP through the third adhesive film AF3.

[0052] The display panel DP generates an image, and the input sensing unit ISP obtains coordinate information of an external input (for example, a touch event).

[0053] The antireflection unit RPP reduces the reflectance of external light incident from the upper side of the window WM. The antireflection unit RPP according to an embodiment of the present invention may include a phase retarder and a polarizer. The phase retarder may be a film type or a liquid crystal coated type retarder, and may include a λ / 2 phase retarder and / or a λ / 4 phase retarder. The polarizer may also be provided as a film type or a liquid crystal coated type polarizer. The film type may include an elongated synthetic resin, and the liquid crystal coated type may include liquid crystals arranged in a predetermined arrangement. The phase retarder and the polarizer may be implemented as one polarizing film. The antireflection unit RPP may further include a protective film disposed above or below the polarizing film.

[0054] The antireflection unit RPP may be disposed on the input sensing unit ISP. That is, the antireflection unit RPP may be disposed between the input sensing unit ISP and the window WM. The input sensing unit ISP, the antireflection unit RPP, and the window WM may be bonded to each other by an adhesive film. A first adhesive film AF1 is disposed between the input sensing unit ISP and the antireflection unit RPP, and a second adhesive film AF2 is disposed between the antireflection unit RPP and the window WM. Accordingly, the antireflection unit RPP is bonded to the input sensing unit ISP through the first adhesive film AF1, and the window WM is bonded to the antireflection unit RPP through the second adhesive film AF2.

[0055] As an example of the present invention, each of the first adhesive film AF1 to the third adhesive film AF3 may include an optically clear adhesive film (OCA). However, each of the first adhesive film AF1 to the third adhesive film AF3 is not limited thereto, and may include a general adhesive or a pressure-sensitive adhesive. For example, the first adhesive film AF1 to the third adhesive film AF3 may include an optically clear adhesive resin (OCR) or a pressure-sensitive adhesive film (PSA).

[0056] Although Figure 2a and Figure 2b show a structure in which the antireflection unit RPP is fixed to the input sensing unit ISP through the first adhesive film AF1, the present invention is not limited thereto. That is, as Figure 2c shows, the antireflection unit RPP may be formed on the input sensing unit ISP through a continuous process. In this case, the antireflection unit RPP may include a color filter disposed directly on the input sensing unit ISP without including a polarizing film. When the antireflection unit RPP includes a color filter disposed directly on the input sensing unit ISP, the first adhesive film AF1 may be omitted. The antireflection unit RPP may further include a black matrix adjacent to the color filter.

[0057] The display module DM can display an image based on an electrical signal and transmit / receive information about an external input. The display module DM can define an active area AA and a peripheral area NAA. The active area AA can be defined as an area that emits an image provided by the display module DM.

[0058] The peripheral area NAA is adjacent to the active area AA. For example, the peripheral area NAA can surround the active area AA. However, this is only an example. For example, the peripheral area NAA can have various shapes and is not limited to a specific embodiment. According to an embodiment, the active area AA of the display module DM can correspond to at least a part of the transmissive area TA.

[0059] The display module DM can further include a main circuit board MCB, a flexible circuit film FCB, and a driving chip DIC.

[0060] The main circuit board MCB can be connected to the flexible circuit film FCB and electrically connected to the display panel DP. The main circuit board MCB can include a plurality of driving elements. The plurality of driving elements can include circuit units for driving the display panel DP.

[0061] The flexible circuit film FCB is connected to the display panel DP to electrically connect the display panel DP to the main circuit board MCB. The driving chip DIC can be mounted on the flexible circuit film FCB.

[0062] The driving chip DIC can include driving elements, such as data driving circuits, for driving pixels of the display panel DP. The flexible circuit film FCB according to an embodiment of the present invention is shown as one film, but is not limited thereto. For example, the flexible circuit film FCB can be provided as a plurality of films and can be connected to the display panel DP.

[0063] Figure 1b A structure in which the driving chip DIC is mounted on the flexible circuit film FCB is shown, but the embodiments of the present invention are not limited thereto. For example, the driving chip DIC can be directly mounted on the display panel DP. In this case, a part of the display panel DP on which the driving chip DIC is mounted can be bent to be disposed on the rear surface of the display module DM.

[0064] The input sensing unit ISP can be electrically connected to the main circuit board MCB through the flexible circuit film FCB. However, the embodiments of the present invention are not limited thereto. That is, the display module DM can additionally include a separate flexible circuit film for electrically connecting the input sensing unit ISP to the main circuit board MCB.

[0065] The outer case EDC houses the display module DM. The outer case EDC can be coupled to the window WM to define the appearance of the display device DD. The outer case EDC absorbs the impact applied from the outside and prevents foreign substances / moisture from penetrating into the display module DM to protect the components housed in the outer case EDC. As an example of an embodiment of the present invention, the outer case EDC can be provided in a shape in which a plurality of housing members are coupled to each other.

[0066] The display device DD according to an embodiment includes an electronic module, and the electronic module includes: various functional modules for driving the display module DM; a power module for supplying power required for the overall operation of the display device DD; and a bracket coupled to the display module DM and / or the outer case EDC to partition the internal space of the display device DD.

[0067] Figure 3 is a plan view of a display panel according to an embodiment of the present invention, Figure 4 is a plan view of an input sensing unit according to an embodiment of the present invention.

[0068] Referring to Figure 3 and Figure 4 , the display panel DP may include a driving circuit GDC, a plurality of signal lines SGL, and a plurality of pixels PX. The display panel DP may further include a pad (also referred to as a “bond pad” or “landing pad”) portion PLD provided in the peripheral area NAA. The pad portion PLD includes pixel pads D-PD connected to corresponding signal lines among the plurality of signal lines SGL.

[0069] The pixels PX are provided in the active area AA. Each of the pixels PX includes an organic light-emitting diode OLED (see Figure 6 ) and a pixel driving circuit connected to the organic light-emitting diode OLED. The driving circuit GDC, the signal lines SGL, the pad portion PLD, and the pixel driving circuit may be provided in Figure 6 the circuit element layer DP-CL shown in.

[0070] The driving circuit GDC may include a gate driving circuit. The gate driving circuit generates a plurality of gate signals (hereinafter, referred to as gate signals) and sequentially outputs the gate signals to a plurality of gate lines GL (hereinafter, referred to as gate lines) to be described later. The gate driving circuit may also output another control signal to the pixel driving circuit.

[0071] The signal line SGL includes a gate line GL, a data line DL, a power line PL, and a control signal line CSL. One of the gate lines in the gate line GL is connected to a corresponding pixel PX among the pixels PX, and one of the data lines in the data line DL is connected to a corresponding pixel among the pixels PX. The power line PL is connected to the pixel PX. The control signal line CSL can provide a control signal to the driving circuit GDC. The signal line SGL overlaps with the active area AA and the peripheral area NAA.

[0072] The pad portion PLD can be a portion to which the flexible circuit film FCB (see Figure 1b ) is connected, and can include a pixel pad D-PD configured to connect the flexible circuit film FCB to the display panel DP and an input pad I-PD configured to connect the flexible circuit film FCB to the input sensing unit ISP. The pixel pad D-PD and the input pad I-PD can be set by exposing some lines provided in the insulating layer of the circuit element layer DP-CL.

[0073] The pixel pads D-PD are respectively connected to the corresponding pixels PX through the signal line SGL. In addition, the driving circuit GDC can be connected to any one of the pixel pads D-PD.

[0074] Referring to Figure 4 , the input sensing unit ISP according to an embodiment of the present invention can include first sensing electrodes IE1-1 to IE1-5, first signal lines SL1-1 to SL1-5 connected to the first sensing electrodes IE1-1 to IE1-5, second sensing electrodes IE2-1 to IE2-4, and second signal lines SL2-1 to SL2-4 connected to the second sensing electrodes IE2-1 to IE2-4. As an example of the present invention, the input sensing unit ISP can further include a third signal line connected to the second sensing electrodes IE2-1 to IE2-4. In this case, the second signal lines SL2-1 to SL2-4 are connected to one end of each of the second sensing electrodes IE2-1 to IE2-4, and the third signal line is connected to the other end of each of the second sensing electrodes IE2-1 to IE2-4.

[0075] The first sensing electrodes IE1-1 to IE1-5 and the second sensing electrodes IE2-1 to IE2-4 cross each other. The first sensing electrodes IE1-1 to IE1-5 are arranged along a first direction DR1, and each of the first sensing electrodes IE1-1 to IE1-5 extends along a second direction DR2.

[0076] Each of the first sensing electrodes IE1-1 to IE1-5 includes a first sensor part SP1 and a first connection part CP1 disposed in the active area AA. Each of the second sensing electrodes IE2-1 to IE2-4 includes a second sensor part SP2 and a second connection part CP2 disposed in the active area AA. Each of the two first sensor parts among the first sensor parts SP1 disposed at both ends of the first electrode may have a smaller size, for example, a size corresponding to about 1 / 2 of the size of the first sensor part SP1 disposed at the center. Each of the two second sensor parts among the second sensor parts SP2 disposed at both ends of the second electrode may have a smaller size, for example, a size corresponding to about 1 / 2 of the size of the second sensor part SP2 disposed at the center.

[0077] Figure 4 The first sensing electrodes IE1-1 to IE1-5 and the second sensing electrodes IE2-1 to IE2-4 according to an embodiment are shown, but the shape of each of the sensing electrodes is not limited thereto. In an embodiment of the present invention, the first sensing electrodes IE1-1 to IE1-5 and the second sensing electrodes IE2-1 to IE2-4 have a shape in which the sensor part and the connection part are not distinguishable from each other (for example, a bar shape). Although each of the first sensor part SP1 and the second sensor part SP2 is exemplarily shown to have a rhombus shape, the embodiments of the present invention are not limited thereto, and the first sensor part SP1 and the second sensor part SP2 may have different polygonal shapes.

[0078] A plurality of first sensor parts SP1 are arranged in one first sensing electrode along the second direction DR2, and a plurality of second sensor parts SP2 are arranged in one second sensing electrode along the first direction DR1. Each of the first connection parts CP1 connects the adjacent first sensor parts SP1 to each other, and each of the second connection parts CP2 connects the adjacent second sensor parts SP2 to each other.

[0079] Each of the first sensing electrodes IE1-1 to IE1-5 and the second sensing electrodes IE2-1 to IE2-4 may have a mesh shape. Since each of the first sensing electrodes IE1-1 to IE1-5 and the second sensing electrodes IE2-1 to IE2-4 has a mesh shape, the parasitic capacitance of the electrodes of the display panel DP (see Figure 3 ) can be reduced. In addition, as will be described later, since the first sensing electrodes IE1-1 to IE1-5 and the second sensing electrodes IE2-1 to IE2-4 do not overlap with the emission regions PXA-R, PXA-G, and PXA-B (see Figure 5a ), they may not be visible to the user of the display device DD.

[0080] Each of the first sensing electrodes IE1-1 to IE1-5 and the second sensing electrodes IE2-1 to IE2-4 having a grid shape may include silver, aluminum, copper, chromium, nickel, or titanium, which can be processed at low temperature, but is not limited thereto. Even when the input sensing unit ISP is formed by a continuous process, it is possible to prevent the organic light-emitting diode OLED (see Figure 6 ) from being damaged.

[0081] The first signal lines SL1-1 to SL1-5 are respectively connected to the ends of the first sensing electrodes IE1-1 to IE1-5. In an embodiment of the present invention, the input sensing unit ISP may further include signal lines connected to the other ends of the first sensing electrodes IE1-1 to IE1-5.

[0082] The first signal lines SL1-1 to SL1-5 and the second signal lines SL2-1 to SL2-4 may be provided in the peripheral area NAA. The input sensing unit ISP may include an input pad I-PD, which extends from the ends of the first signal lines SL1-1 to SL1-5 and the second signal lines SL2-1 to SL2-4 and is provided in the peripheral area NAA.

[0083] Figure 5a is an enlarged plan view of a display panel corresponding to the area FF shown in Figure 3 , Figure 5b is an enlarged plan view of the area FF of the input sensing unit shown in Figure 4 .

[0084] Referring to Figure 3 and Figure 5a , the display panel DP includes a plurality of pixels PX. As an example of the present invention, each of the plurality of pixels PX may be one of a plurality of first pixels PX-G, a plurality of second pixels PX-R, and a plurality of third pixels PX-B. As an example of the present invention, each of the plurality of first pixels PX-G, the plurality of second pixels PX-R, and the plurality of third pixels PX-B may have different sizes. That is, each of the first pixels PX-G may have a size smaller than the sizes of each of the second pixels PX-R and the third pixels PX-B, and each of the second pixels PX-R may have a size smaller than the sizes of each of the third pixels PX-B. As an example of the present invention, the first pixel PX-G may be a green pixel, the second pixel PX-R may be a red pixel, and the third pixel PX-B may be a blue pixel.

[0085] The first pixel PX-G may be arranged along the first direction DR1 and the second direction DR2. The second pixel PX-R and the third pixel PX-B may be alternately repeated and arranged along the first direction DR1 and the second direction DR2. The non-pixel area NPA may be defined between the first pixel PX-G, the second pixel PX-R, and the third pixel PX-B.

[0086] Figure 5a The arrangement structure of the first pixel PX-G, the second pixel PX-R, and the third pixel PX-B shown in the figure is only shown as an example, and the present invention is not limited thereto. For example, according to another embodiment of the present invention, the first pixel PX-G, the second pixel PX-R, and the third pixel PX-B may be alternately arranged along the second direction DR2. In addition, although each of the first pixel PX-G, the second pixel PX-R, and the third pixel PX-B is exemplarily shown as having a rectangular shape, the present invention is not limited thereto, and each of the first pixel PX-G, the second pixel PX-R, and the third pixel PX-B may be transformed into a polygonal shape, a circular shape, an elliptical shape, etc. in various ways. As another example, the shapes of the first pixel PX-G, the second pixel PX-R, and the third pixel PX-B may be different from each other. That is, the first pixel PX-G may have a circular shape, and each of the second pixel PX-R and the third pixel PX-B may have a rectangular shape.

[0087] In addition, despite Figure 5a , an example in which each of the first pixels PX-G has a size smaller than each of the second pixel PX-R and the third pixel PX-B is shown, but the present invention is not limited thereto. For example, in another embodiment of the present invention, the first pixel PX-G, the second pixel PX-R, and the third pixel PX-B may have the same size.

[0088] Each of the first pixels PX-G includes a first emission area PXA-G from which a first light is emitted and a first non-emission area NPXA-G formed around the first emission area PXA-G. The second pixel PX-R includes a second emission area PXA-R from which a second light is emitted and a second non-emission area NPXA-R formed around the second emission area PXA-R. The third pixel PX-B includes a third emission area PXA-B from which a third light is emitted and a third non-emission area NPXA-B formed around the third emission area PXA-B. Here, the first light may be light having a green band, the second light may be light having a red band, and the third light may be light having a blue band. The first non-emission area NPXA-G, the second non-emission area NPXA-R, and the third non-emission area NPXA-B are defined as areas from which light is not emitted.

[0089] Reference Figure 5a andFigure 5b Each of the second sensor portions SP2 of the input sensing unit ISP has a mesh shape. Each of the second sensor portions SP2 includes a mesh electrode MSE patterned in a mesh shape. The second sensor portion SP2 can be set to correspond to the non-pixel region NPA to increase the aperture ratio of each of the first pixel PX-G, the second pixel PX-R, and the third pixel PX-B, and to reduce the parasitic capacitance of each of the first pixel PX-G, the second pixel PX-R, and the third pixel PX-B. The mesh electrode MSE can be partially overlapped with the first non-emitting region NPXA-G, the second non-emitting region NPXA-R, and the third non-emitting region NPXA-B.

[0090] Each of the first sensor portion SP1 and the second sensor portion SP2 can have a mesh shape. A plurality of sensor openings OP-MG, OP-MR, and OP-MB corresponding to the pixels PX-G, PX-R, and PX-B can be defined in each of the first sensor portion SP1 and the second sensor portion SP2. Accordingly, the first sensor portion SP1 and the second sensor portion SP2 may not be overlapped with the first pixel PX-G, the second pixel PX-R, and the third pixel PX-B on a plane. For example, the first sensor opening OP-MG can be defined in a region corresponding to the first pixel PX-G, the second sensor opening OP-MR can be defined in a region corresponding to the second pixel PX-R, and the third sensor opening OP-MB can be defined in a region corresponding to the third pixel PX-B.

[0091] Figure 6 is a cross-sectional view of a display device taken along line II-II' according to an embodiment of the present invention Figure 5b and is an enlarged cross-sectional view of a portion GG shown in Figure 7 However, for ease of description, the hole control layer HCL and the electron control layer ECL of the organic light emitting diode OLED shown in Figure 6 are removed in Figure 7 In Figure 6 the hole control layer HCL and the electron control layer ECL of the organic light emitting diode OLED shown in

[0092] In a display device DD according to an embodiment of the present invention, the display panel DP may include a substrate layer BL, a circuit element layer DP-CL disposed on the substrate layer BL, a display element layer DP-OLED, and a thin film encapsulation layer TFE. Although not shown separately, the display panel DP may further include functional layers such as an anti-reflection layer and a reflectance adjustment layer.

[0093] The substrate layer BL may include a synthetic resin layer. The synthetic resin layer is disposed on a working substrate for manufacturing a display panel DP. Thereafter, a conductive layer, an insulating layer, etc. may be disposed on the synthetic resin layer. When the working substrate is removed, the synthetic resin layer corresponds to the substrate layer BL. The synthetic resin layer may be a polyimide resin layer, and its material is not particularly limited. Additionally, the substrate layer BL may include a glass substrate, a metal substrate, and an organic / inorganic composite substrate.

[0094] The circuit element layer DP-CL includes at least one insulating layer and circuit elements. Hereinafter, the insulating layer disposed in the circuit element layer DP-CL may be referred to as an intermediate insulating layer. The intermediate insulating layer includes at least one intermediate inorganic film and at least one intermediate organic film. The circuit elements include signal lines and pixel driving circuits. The circuit element layer DP-CL may be formed by processes of forming insulating layers, semiconductor layers, and conductive layers by coating or deposition and processes of patterning the insulating layers, semiconductor layers, and conductive layers by photolithography.

[0095] The display element layer DP-OLED may include a pixel defining layer PDL and an organic light-emitting diode OLED. The pixel defining layer PDL may include an organic material. A first electrode AE is disposed on the circuit element layer DP-CL. The pixel defining layer PDL is disposed on the first electrode AE. An opening OP is defined in the pixel defining layer PDL. The opening OP of the pixel defining layer PDL exposes at least a part of the first electrode AE. The pixel defining layer PDL may be omitted in an embodiment of the present invention.

[0096] Referring to Figure 5a and Figure 6 , the display panel DP may include emission regions PXA-G, PXA-R, and PXA-B and non-emission regions NPXA-G, NPXA-R, and NPXA-B adjacent to the emission regions PXA-G, PXA-R, and PXA-B. Each of the non-emission regions NPXA-G, NPXA-R, and NPXA-B may respectively surround the corresponding emission regions PXA-G, PXA-R, and PXA-B. In this embodiment, the emission regions PXA-G, PXA-R, and PXA-B are defined to correspond to partial regions of the first electrode AE exposed by the opening OP. A non-pixel region NPA may be defined between the non-emission regions NPXA-G, NPXA-R, and NPXA-B.

[0097] The hole control layer HCL can be commonly disposed in the emission regions PXA-G, PXA-R, and PXA-B, the non-emission regions NPXA-G, NPXA-R, and NPXA-B, and the non-pixel region NPA. The emission layer EML that emits light is disposed on the hole control layer HCL. The emission layer EML can be disposed in a region corresponding to the opening OP. That is, the emission layer EML can be separately formed in each of the pixels PX-G, PX-R, and PX-B. In addition, the emission layer EML can include an organic material and / or an inorganic material. The emission layer EML can generate light having a predetermined color. For example, the emission layer EML can generate at least one of red light, green light, and blue light.

[0098] Although the patterned emission layer EML is shown as an example in this embodiment, the emission layer EML can be disposed in the emission regions PXA-G, PXA-R, and PXA-B. Here, the emission layer EML can emit white light. In addition, the emission layer EML can have a multilayer structure called a tandem.

[0099] The electron control layer ECL is disposed on the emission layer EML. Although not shown separately, the electron control layer ECL can be commonly formed in the emission regions PXA-G, PXA-R, and PXA-B, the non-emission regions NPXA-G, NPXA-R, and NPXA-B, and the non-pixel region NPA. The second electrode CE is disposed on the electron control layer ECL. The second electrode CE is commonly disposed in the emission regions PXA-G, PXA-R, and PXA-B, the non-emission regions NPXA-G, NPXA-R, and NPXA-B, and the non-pixel region NPA.

[0100] The thin film encapsulation layer TFE is disposed on the second electrode CE. The thin film encapsulation layer TFE seals the display element layer DP-OLED. The thin film encapsulation layer TFE includes at least one insulating layer. The thin film encapsulation layer TFE according to an embodiment of the present invention can include at least one inorganic film (hereinafter, referred to as an encapsulation inorganic film). The thin film encapsulation layer TFE according to an embodiment of the present invention can include at least one organic film (hereinafter, referred to as an encapsulation organic film) and at least one encapsulation inorganic film.

[0101] The encapsulation inorganic film protects the display element layer DP-OLED from the effects of moisture / oxygen, and the encapsulation organic film protects the display element layer DP-OLED from foreign substances such as dust particles. The encapsulation inorganic film can include 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. The encapsulation organic film can include an acrylate-based organic layer, but is not particularly limited thereto.

[0102] The input sensing unit ISP can be directly disposed on the display panel DP. The input sensing unit ISP can be directly disposed on the thin film encapsulation layer TFE of the display panel DP. The input sensing unit ISP includes a substrate layer I-BS, a first conductive layer and a second conductive layer disposed on the substrate layer I-BS, and a first inorganic insulating layer IL1 and a second inorganic insulating layer IL2. The substrate layer I-BS is disposed on the thin film encapsulation layer TFE and may include an inorganic material. For example, the substrate layer I-BS may include a silicon nitride layer. The inorganic layer disposed on the uppermost side of the thin film encapsulation layer TFE may also include silicon nitride. The silicon nitride layers of the substrate layer I-BS and the thin film encapsulation layer TFE can be disposed under different deposition conditions.

[0103] The first inorganic insulating layer IL1 can be disposed on the substrate layer I-BS. The first inorganic insulating layer IL1 may include the same material as the substrate layer I-BS. The first inorganic insulating layer IL1 may have a thickness smaller than that of the substrate layer I-BS. The first inorganic insulating layer IL1 can be omitted. Although Figure 6 shows a structure in which the input sensing unit ISP includes the substrate layer I-BS, the present invention is not limited thereto. That is, the input sensing unit ISP may not include the substrate layer I-BS. In this case, the first inorganic insulating layer IL1 can be directly disposed on the thin film encapsulation layer TFE.

[0104] Refer to Figure 4 、 Figure 5b and Figure 6 , the first conductive layer is disposed on the first inorganic insulating layer IL1. The first conductive layer may include a first sensor portion SP1, a second sensor portion SP2, and a second connection portion CP2. The second conductive layer is disposed on the first conductive layer. The second conductive layer may include a first connection portion CP1. The second inorganic insulating layer IL2 is disposed between the first conductive layer and the second conductive layer. The second inorganic insulating layer IL2 separates and isolates the first conductive layer and the second conductive layer in a cross section. A contact hole CNT for partially exposing the first sensor portion SP1 can be disposed in the second inorganic insulating layer IL2, and the first connection portion CP1 can be connected to the first sensor portion SP1 through the contact hole CNT. The second inorganic insulating layer IL2 is disposed on the first inorganic insulating layer IL1.

[0105] The second inorganic insulating layer IL2 may include the same material as the first inorganic insulating layer IL1 and the substrate layer I-BS. Each of the first inorganic insulating layer IL1 and the second inorganic insulating layer IL2 may have a thickness smaller than that of the substrate layer I-BS.

[0106] The first organic insulating layer OL1 may be disposed on the second conductive layer. The first organic insulating layer OL1 may have a first refractive index. The first organic insulating layer OL1 may include an organic insulating material. The organic insulating material may include at least one of an acrylate resin, a methacrylate resin, a polyisoprene resin, a vinyl resin, an epoxy resin, a polyurethane resin, a cellulose resin, a silicone resin, a polyimide resin, a polyamide resin, and a perylene resin. However, this is merely an example, and the organic insulating material is not limited to the above examples.

[0107] A plurality of first openings OP1G, OP1R, and OP1B may be defined in the first organic insulating layer OL1. The first openings OP1G, OP1R, and OP1B may be provided to correspond to the emission regions PXA-G, PXA-R, and PXA-B of the pixels PX-G, PX-R, and PX-B, respectively. The first openings OP1G, OP1R, and OP1B may be superposed on the emission regions PXA-G, PXA-R, and PXA-B of the pixels PX-G, PX-R, and PX-B, respectively, in a plane. The first openings OP1G, OP1R, and OP1B may have different sizes.

[0108] The first openings OP1G, OP1R, and OP1B may include: a first sub-opening OP1G provided to correspond to the first emission region PXA-G of the first pixel PX-G; a second sub-opening OP1R provided to correspond to the second emission region PXA-R of the second pixel PX-R; and a third sub-opening OP1B provided to correspond to the third emission region PXA-B of the third pixel PX-B. The first sub-opening OP1G may have a shape and size corresponding to the first emission region PXA-G, the second sub-opening OP1R may have a shape and size corresponding to the second emission region PXA-R, and the third sub-opening OP1B may have a shape and size corresponding to the third emission region PXA-B. Thus, as an example of the present invention, the first sub-opening OP1G, the second sub-opening OP1R, and the third sub-opening OP1B may have different sizes.

[0109] A plurality of first inclined surfaces OL1-S defining the first openings OP1G, OP1R, and OP1B may be provided in the first organic insulating layer OL1. The plurality of first inclined surfaces OL1-S may have a shape inclined with respect to the top surface of the second inorganic insulating layer IL2 and may be provided to be at a first height h1 from the second inorganic insulating layer IL2.

[0110] The second organic insulating layer OL2 may be disposed on the first organic insulating layer OL1. The second organic insulating layer OL2 may include an organic insulating material. The organic insulating material may include at least one of an acrylate resin, a methacrylate resin, a polyisoprene resin, a vinyl resin, an epoxy resin, a polyurethane resin, a cellulose resin, a silicone resin, a polyimide resin, a polyamide resin, and a perylene resin. However, this is merely an example, and the organic insulating material is not limited to the above examples. The second organic insulating layer OL2 may be made of an organic insulating material having a refractive index greater than that of the first organic insulating layer OL1.

[0111] A plurality of second openings OP2G, OP2R, and OP2B may be respectively defined in the second organic insulating layer OL2 in regions corresponding to the plurality of first openings OP1G, OP1R, and OP1B. The second openings OP2G, OP2R, and OP2B may respectively overlap the emission regions PXA-G, PXA-R, and PXA-B of the pixels PX-G, PX-R, and PX-B in a plane. As an example of the present invention, each of the second openings OP2G, OP2R, and OP2B may have a size smaller than that of each of the corresponding first openings OP1G, OP1R, and OP1B.

[0112] The second openings OP2G, OP2R, and OP2B may include: a fourth sub-opening OP2G disposed corresponding to the first emission region PXA-G of the first pixel PX-G; a fifth sub-opening OP2R disposed corresponding to the second emission region PXA-R of the second pixel PX-R; and a sixth sub-opening OP2B disposed corresponding to the third emission region PXA-B of the third pixel PX-B. The fourth sub-opening OP2G may have a shape and size corresponding to the first emission region PXA-G, the fifth sub-opening OP2R may have a shape and size corresponding to the second emission region PXA-R, and the sixth sub-opening OP2B may have a shape and size corresponding to the third emission region PXA-B. Thus, as an example of the present invention, the fourth sub-opening OP2G, the fifth sub-opening OP2R, and the sixth sub-opening OP2B may have different sizes.

[0113] In addition, the fourth sub-opening OP2G is disposed corresponding to the first sub-opening OP1G, the fifth sub-opening OP2R is disposed corresponding to the second sub-opening OP1R, and the sixth sub-opening OP2B is disposed corresponding to the third sub-opening OP1B. Here, the fourth sub-opening OP2G has a size smaller than that of the first sub-opening OP1G, the fifth sub-opening OP2R has a size smaller than that of the second sub-opening OP1R, and the sixth sub-opening OP2B has a size smaller than that of the third sub-opening OP1B.

[0114] A plurality of second inclined surfaces OL2-S defining the second openings OP2G, OP2R, and OP2B may be provided in the second organic insulating layer OL2. The plurality of second inclined surfaces OL2-S may have a shape inclined with respect to the top surface of the second inorganic insulating layer IL2 and may be provided at a second height h2 from the second inorganic insulating layer IL2. That is, each of the second inclined surfaces OL2-S may have a height greater than that of the first inclined surface OL1-S.

[0115] The second organic insulating layer OL2 is provided to cover the top surface of the first organic insulating layer OL1 and the plurality of first inclined surfaces OL1-S. Here, the plurality of second inclined surfaces OL2-S may be provided parallel to the first inclined surfaces OL1-S. In addition, the plurality of second inclined surfaces OL2-S may be provided spaced apart from the plurality of first inclined surfaces OL1-S in a plane. For example, each of the plurality of second inclined surfaces OL2-S may be provided closer to the corresponding emission region PXA-G, PXA-R, or PXA-B than the corresponding first inclined surface OL1-S.

[0116] A third organic insulating layer OL3 may be provided on the second organic insulating layer OL2. The third organic insulating layer OL3 may include an organic insulating material. The organic insulating material may include at least one of an acrylate resin, a methacrylate resin, a polyisoprene resin, a vinyl resin, an epoxy resin, a polyurethane resin, a cellulose resin, a silicone resin, a polyimide resin, a polyamide resin, and a perylene resin. However, this is only an example, and the organic insulating material is not limited to the above examples. The third organic insulating layer OL3 may be made of an organic insulating material having a refractive index greater than that of the second organic insulating layer OL2.

[0117] In the third organic insulating layer OL3, a plurality of third openings OP3G, OP3R, and OP3B may be respectively defined in regions corresponding to the plurality of second openings OP2G, OP2R, and OP2B. The third openings OP3G, OP3R, and OP3B may be respectively superposed on the emission regions PXA-G, PXA-R, and PXA-B of the pixels PX-G, PX-R, and PX-B in a plane. As an example of the present invention, each of the third openings OP3G, OP3R, and OP3B may have a size smaller than that of each of the corresponding second openings OP2G, OP2R, and OP2B.

[0118] The third openings OP3G, OP3R, and OP3B may include: a seventh sub-opening OP3G configured to correspond to a first emission region PXA-G of a first pixel PX-G; an eighth sub-opening OP3R configured to correspond to a second emission region PXA-R of a second pixel PX-R; and a ninth sub-opening OP3B configured to correspond to a third emission region PXA-B of a third pixel PX-B. The seventh sub-opening OP3G may have a shape and size corresponding to the first emission region PXA-G, the eighth sub-opening OP3R may have a shape and size corresponding to the second emission region PXA-R, and the ninth sub-opening OP3B may have a shape and size corresponding to the third emission region PXA-B. Thus, as an example of the present invention, the seventh sub-opening OP3G, the eighth sub-opening OP3R, and the ninth sub-opening OP3B may have different sizes.

[0119] In addition, the seventh sub-opening OP3G is configured to correspond to the fourth sub-opening OP2G, the eighth sub-opening OP3R is configured to correspond to the fifth sub-opening OP2R, and the ninth sub-opening OP3B is configured to correspond to the sixth sub-opening OP2B. Here, the seventh sub-opening OP3G has a size smaller than that of the fourth sub-opening OP2G, the eighth sub-opening OP3R has a size smaller than that of the fifth sub-opening OP2R, and the ninth sub-opening OP3B has a size smaller than that of the sixth sub-opening OP2B.

[0120] A plurality of third inclined surfaces OL3-S defining the third openings OP3G, OP3R, and OP3B may be provided in a third organic insulating layer OL3. The plurality of third inclined surfaces OL3-S may have a shape inclined with respect to a top surface of the second inorganic insulating layer IL2 and may be provided at a third height h3 from the second inorganic insulating layer IL2. That is, each of the third inclined surfaces OL3-S may have a height higher than that of the second inclined surface OL2-S.

[0121] The third organic insulating layer OL3 is provided to cover a top surface of the second organic insulating layer OL2 and the plurality of second inclined surfaces OL2-S. The plurality of third inclined surfaces OL3-S may be provided parallel to the second inclined surfaces OL2-S. In addition, the plurality of third inclined surfaces OL3-S may be provided spaced apart from the plurality of second inclined surfaces OL2-S in a plane. That is, each of the plurality of third inclined surfaces OL3-S may be provided closer to a corresponding emission region PXA-G, PXA-R, or PXA-B than a corresponding second inclined surface OL2-S.

[0122] A high refractive index insulating layer HRL may be disposed on the third organic insulating layer OL3. The high refractive index insulating layer HRL may have a refractive index greater than that of the third organic insulating layer OL3. As an example of the present invention, the high refractive index insulating layer HRL may have a refractive index of 1.65 or more and 1.70 or less. The high refractive index insulating layer HRL may include an organic insulating material having a refractive index greater than that of the organic insulating material forming the third organic insulating layer OL3. The high refractive index insulating layer HRL may include, for example, zirconia.

[0123] The high refractive index insulating layer HRL may be disposed to fill the third openings OP3G, OP3R, and OP3B. The high refractive index insulating layer HRL may have a flat top surface.

[0124] Light emitted from the organic light emitting diode OLED may be emitted in the forward direction (e.g., along the third direction DR3) and in the lateral direction. The emission efficiency may be determined based on the light emitted in the forward direction. According to an embodiment of the present invention, the front light Lf emitted from the organic light emitting diode OLED in the forward direction may pass through the high refractive index insulating layer HRL and then be emitted. The side lights Ls1, Ls2, and Ls3 emitted from the organic light emitting diode OLED in the lateral direction may include a first side light Ls1, a second side light Ls2, and a third side light Ls3 divided according to the emission angle. Here, the emission angle may be defined as an angle inclined with respect to the front light Lf. The second side light Ls2 may have an emission angle greater than that of the first side light Ls1, and the third side light Ls3 may have an emission angle greater than that of the second side light Ls2.

[0125] Due to the difference in refractive index between the third organic insulating layer OL3 and the high refractive index insulating layer HRL, the first side light Ls1 may be refracted or totally reflected. Therefore, the optical path of the first side light Ls1 may be changed to the forward direction, that is, changed to the third direction DR3 or a direction close to the third direction DR3. Due to the difference in refractive index between the second organic insulating layer OL2 and the third organic insulating layer OL3, the second side light Ls2 may be refracted or totally reflected. Therefore, the optical path of the second side light Ls2 may be changed to the forward direction, that is, changed to the third direction DR3 or a direction close to the third direction DR3. Due to the difference in refractive index between the first organic insulating layer OL1 and the second organic insulating layer OL2, the third side light Ls3 may be refracted or totally reflected. Therefore, the optical path of the third side light Ls3 may be changed to the forward direction, that is, changed to the third direction DR3 or a direction close to the third direction DR3. Therefore, when the optical paths of the first side light Ls1, the second side light Ls2, and the third side light Ls3 are changed to the forward direction, the emission efficiency of the display device DD may be improved.

[0126] The first thickness t1 of the first organic insulating layer OL1 may be thicker than the second thickness t2 of each of the second organic insulating layer OL2 and the third organic insulating layer OL3. When the first thickness t1 of the first organic insulating layer OL1 is thicker than the second thickness t2, the first height h1 of the first inclined surface OL1-S may increase. However, embodiments of the present invention are not limited thereto. That is, the first organic insulating layer OL1 to the third organic insulating layer OL3 may have the same thickness.

[0127] Figure 8 is a cross-sectional view of a display device taken along line II-II' according to another embodiment of the present invention Figure 5b and is an enlarged cross-sectional view of a portion HH shown in Figure 9 is Figure 8 .

[0128] Referring to Figure 5b , Figure 8 and Figure 9 , in a display device DD according to another embodiment of the present invention, a first organic insulating layer OL1 may be disposed on a second conductive layer. The first organic insulating layer OL1 may have a first refractive index. The first organic insulating layer OL1 may include an organic insulating material. The organic insulating material may include at least one of an acrylate resin, a methacrylate resin, a polyisoprene resin, a vinyl resin, an epoxy resin, a polyurethane resin, a cellulose resin, a silicone resin, a polyimide resin, a polyamide resin, and a perylene resin. However, this is merely an example, and the organic insulating material is not limited to the above examples.

[0129] A plurality of first openings OP1G, OP1R, and OP1B may be defined in the first organic insulating layer OL1. The first openings OP1G, OP1R, and OP1B may be provided to correspond to the emission regions PXA-G, PXA-R, and PXA-B of the pixels PX-G, PX-R, and PX-B, respectively. The first openings OP1G, OP1R, and OP1B may overlap the emission regions PXA-G, PXA-R, and PXA-B of the pixels PX-G, PX-R, and PX-B, respectively, in a plan view. The first openings OP1G, OP1R, and OP1B may have different sizes.

[0130] The first openings OP1G, OP1R, and OP1B may include: a first sub-opening OP1G, configured to correspond to a first emission region PXA-G of a first pixel PX-G; a second sub-opening OP1R, configured to correspond to a second emission region PXA-R of a second pixel PX-R; and a third sub-opening OP1B, configured to correspond to a third emission region PXA-B of a third pixel PX-B. The first sub-opening OP1G may have a shape and size corresponding to the first emission region PXA-G, the second sub-opening OP1R may have a shape and size corresponding to the second emission region PXA-R, and the third sub-opening OP1B may have a shape and size corresponding to the third emission region PXA-B. Thus, as an example of the present invention, the first sub-opening OP1G, the second sub-opening OP1R, and the third sub-opening OP1B may have different sizes.

[0131] A plurality of first inclined surfaces OL1-S defining the first openings OP1G, OP1R, and OP1B may be provided in the first organic insulating layer OL1. The plurality of first inclined surfaces OL1-S may have a shape inclined with respect to a top surface of the second inorganic insulating layer IL2 and may be provided at a second height h2 from the second inorganic insulating layer IL2.

[0132] The second organic insulating layer OL2 may be provided on the first inclined surfaces OL1-S of the first organic insulating layer OL1. That is, the second organic insulating layer OL2 may only cover the first inclined surfaces OL1-S without covering a top surface of the first organic insulating layer OL1. Although not shown in the drawings, the second organic insulating layer OL2 may be provided to cover the first inclined surfaces OL1-S and a portion of the top surface of the first organic insulating layer OL1 adjacent to the first inclined surfaces OL1-S.

[0133] The second organic insulating layer OL2 may include an organic insulating material. Specifically, the second organic insulating layer OL2 may be made of an organic insulating material having a refractive index greater than that of the first organic insulating layer OL1.

[0134] A plurality of second openings OP2G, OP2R, and OP2B may be respectively defined in the second organic insulating layer OL2 in regions corresponding to the plurality of first openings OP1G, OP1R, and OP1B. The second openings OP2G, OP2R, and OP2B may respectively overlap the emission regions PXA-G, PXA-R, and PXA-B of the pixels PX-G, PX-R, and PX-B in a plan view. As an example of the present invention, each of the second openings OP2G, OP2R, and OP2B may have a size smaller than that of each of the corresponding first openings OP1G, OP1R, and OP1B.

[0135] The second openings OP2G, OP2R, and OP2B may include: a fourth sub-opening OP2G, disposed to correspond to a first emission region PXA-G of the first pixel PX-G; a fifth sub-opening OP2R, disposed to correspond to a second emission region PXA-R of the second pixel PX-R; and a sixth sub-opening OP2B, disposed to correspond to a third emission region PXA-B of the third pixel PX-B. The fourth sub-opening OP2G may have a shape and size corresponding to the first emission region PXA-G, the fifth sub-opening OP2R may have a shape and size corresponding to the second emission region PXA-R, and the sixth sub-opening OP2B may have a shape and size corresponding to the third emission region PXA-B. Thus, as an example of the present invention, the fourth sub-opening OP2G, the fifth sub-opening OP2R, and the sixth sub-opening OP2B may have different sizes.

[0136] In addition, the fourth sub-opening OP2G is disposed to correspond to the first sub-opening OP1G, the fifth sub-opening OP2R is disposed to correspond to the second sub-opening OP1R, and the sixth sub-opening OP2B is disposed to correspond to the third sub-opening OP1B. Here, the fourth sub-opening OP2G has a size smaller than that of the first sub-opening OP1G, the fifth sub-opening OP2R has a size smaller than that of the second sub-opening OP1R, and the sixth sub-opening OP2B has a size smaller than that of the third sub-opening OP1B.

[0137] A plurality of second inclined surfaces OL2-S defining the second openings OP2G, OP2R, and OP2B may be provided in the second organic insulating layer OL2. The plurality of second inclined surfaces OL2-S may have a shape inclined with respect to a top surface of the second inorganic insulating layer IL2, and may be provided at a second height h2 from the second inorganic insulating layer IL2. That is, each of the second inclined surfaces OL2-S may have the same height as each of the first inclined surfaces OL1-S.

[0138] Here, the plurality of second inclined surfaces OL2-S may be provided parallel to the first inclined surfaces OL1-S. In addition, the plurality of second inclined surfaces OL2-S may be provided spaced apart from the plurality of first inclined surfaces OL1-S in a plane. For example, each of the plurality of second inclined surfaces OL2-S may be provided closer to the corresponding emission region PXA-G, PXA-R, or PXA-B than the corresponding first inclined surface OL1-S.

[0139] The third organic insulating layer OL3 may be disposed on the second inclined surface OL2-S of the second organic insulating layer OL2. That is to say, the third organic insulating layer OL3 may cover the second inclined surface OL2-S without covering the top surface of the second organic insulating layer OL2. Although not shown in the drawings, the third organic insulating layer OL3 may be disposed to cover a portion of the top surface of the second organic insulating layer OL2 adjacent to the first inclined surface OL1-S and the second inclined surface OL2-S.

[0140] The third organic insulating layer OL3 may include an organic insulating material. The third organic insulating layer OL3 may be made of an organic insulating material having a refractive index greater than that of the second organic insulating layer OL2.

[0141] In the third organic insulating layer OL3, a plurality of third openings OP3G, OP3R, and OP3B may be respectively defined in regions corresponding to the plurality of second openings OP2G, OP2R, and OP2B. The third openings OP3G, OP3R, and OP3B may respectively overlap with the emission regions PXA-G, PXA-R, and PXA-B of the pixels PX-G, PX-R, and PX-B in a plane. As an example of the present invention, each of the third openings OP3G, OP3R, and OP3B may have a size smaller than that of each of the corresponding second openings OP2G, OP2R, and OP2B.

[0142] The third openings OP3G, OP3R, and OP3B may include: a seventh sub-opening OP3G disposed corresponding to the first emission region PXA-G of the first pixel PX-G; an eighth sub-opening OP3R disposed corresponding to the second emission region PXA-R of the second pixel PX-R; and a ninth sub-opening OP3B disposed corresponding to the third emission region PXA-B of the third pixel PX-B. The seventh sub-opening OP3G may have a shape and size corresponding to the first emission region PXA-G, the eighth sub-opening OP3R may have a shape and size corresponding to the second emission region PXA-R, and the ninth sub-opening OP3B may have a shape and size corresponding to the third emission region PXA-B. Thus, as an example of the present invention, the seventh sub-opening OP3G, the eighth sub-opening OP3R, and the ninth sub-opening OP3B may have different sizes.

[0143] In addition, the seventh sub-opening OP3G is disposed corresponding to the fourth sub-opening OP2G, the eighth sub-opening OP3R is disposed corresponding to the fifth sub-opening OP2R, and the ninth sub-opening OP3B is disposed corresponding to the sixth sub-opening OP2B. Here, the seventh sub-opening OP3G has a size smaller than that of the fourth sub-opening OP2G, the eighth sub-opening OP3R has a size smaller than that of the fifth sub-opening OP2R, and the ninth sub-opening OP3B has a size smaller than that of the sixth sub-opening OP2B.

[0144] A plurality of third inclined surfaces OL3-S defining the third openings OP3G, OP3R, and OP3B may be provided in the third organic insulating layer OL3. The plurality of third inclined surfaces OL3-S may have a shape inclined with respect to the top surface of the second inorganic insulating layer IL2, and may be provided at a second height h2 from the second inorganic insulating layer IL2. That is, each of the third inclined surfaces OL3-S may have the same height as each of the first inclined surface OL1-S and the second inclined surface OL2-S. In this case, the first organic insulating layer OL1, the second organic insulating layer OL2, and the third organic insulating layer OL3 may have the same thickness.

[0145] Here, the plurality of third inclined surfaces OL3-S may be provided parallel to the second inclined surface OL2-S. In addition, the plurality of third inclined surfaces OL3-S may be provided spaced apart from the plurality of second inclined surfaces OL2-S in a plane. For example, each of the plurality of third inclined surfaces OL3-S may be provided closer to the corresponding emission region PXA-G, PXA-R, or PXA-B than the corresponding second inclined surface OL2-S.

[0146] A high refractive index insulating layer HRL may be provided on the third organic insulating layer OL3. The high refractive index insulating layer HRL may have a refractive index greater than that of the third organic insulating layer OL3. As an example of the present invention, the high refractive index insulating layer HRL may have a refractive index of 1.65 or more and 1.70 or less. The high refractive index insulating layer HRL may include an organic insulating material having a refractive index greater than that of the organic insulating material forming the third organic insulating layer OL3. The high refractive index insulating layer HRL may include, for example, zirconia.

[0147] The high refractive index insulating layer HRL may be provided to fill the third openings OP3G, OP3R, and OP3B. The high refractive index insulating layer HRL may have a flat top surface.

[0148] Light emitted from the organic light emitting diode OLED may be emitted in a forward direction (e.g., along the third direction DR3) and in a lateral direction. The light efficiency may be determined based on the light emitted in the forward direction. According to an embodiment of the present invention, forward light Lf emitted from the organic light emitting diode OLED in the forward direction may pass through the high refractive index insulating layer HRL and then be emitted. The side lights Ls1, Ls2, and Ls3 emitted from the organic light emitting diode OLED in the lateral direction may include a first side light Ls1, a second side light Ls2, and a third side light Ls3 divided according to the emission angle. Here, the emission angle may be defined as an angle inclined with respect to the forward light Lf. The second side light Ls2 may have an emission angle greater than that of the first side light Ls1, and the third side light Ls3 may have an emission angle greater than that of the second side light Ls2.

[0149] Due to the refractive index difference between the third organic insulating layer OL3 and the high refractive index insulating layer HRL, the first side light Ls1 can be refracted or totally reflected. Therefore, the optical path of the first side light Ls1 can be changed to be along the forward direction, that is, changed to be along the third direction DR3 or a direction close to the third direction DR3. Due to the refractive index difference between the second organic insulating layer OL2 and the third organic insulating layer OL3, the second side light Ls2 can be refracted or totally reflected. Therefore, the optical path of the second side light Ls2 can be changed to be along the forward direction, that is, changed to be along the third direction DR3 or a direction close to the third direction DR3. Due to the refractive index difference between the first organic insulating layer OL1 and the second organic insulating layer OL2, the third side light Ls3 can be refracted or totally reflected. Therefore, the optical path of the third side light Ls3 can be changed to be along the forward direction, that is, changed to be along the third direction DR3 or a direction close to the third direction DR3. Therefore, when the optical paths of the first side light Ls1, the second side light Ls2, and the third side light Ls3 are changed to be along the forward direction, the emission efficiency of the display device DD can be improved.

[0150] Figure 10 is a diagram showing according to another embodiment of the present invention Figure 4 an enlarged plan view of the region FF of the input sensing unit shown in Figure 11 is a cross-sectional view of a display device taken along the line III-III' according to an embodiment of the present invention Figure 10 of

[0151] Referring to Figure 4 、 Figure 10 and Figure 11 each of the first sensor part SP1 and the second sensor part SP2 of the input sensing unit ISP may have a grid shape. A plurality of sensor openings OP-MG, OP-MR, and OP-MB corresponding to the pixels PX-G, PX-R, and PX-B may be defined in each of the first sensor part SP1 and the second sensor part SP2. Therefore, the first sensor part SP1 and the second sensor part SP2 may not overlap with the first pixel PX-G, the second pixel PX-R, and the third pixel PX-B on the plane. For example, the first sensor opening OP-MG may be defined in the region corresponding to the first pixel PX-G, the second sensor opening OP-MR may be defined in the region corresponding to the second pixel PX-R, and the third sensor opening OP-MB may be defined in the region corresponding to the third pixel PX-B.

[0152] A plurality of first openings OP1G, OP1R, and OP1B may be defined in the first organic insulating layer OL1. The first openings OP1G, OP1R, and OP1B may be arranged to correspond to the emission regions PXA-G, PXA-R, and PXA-B of the pixels PX-G, PX-R, and PX-B, respectively. The first openings OP1G, OP1R, and OP1B may be respectively superimposed on the emission regions PXA-G, PXA-R, and PXA-B of the pixels PX-G, PX-R, and PX-B in a plane. The first openings OP1G, OP1R, and OP1B may have different sizes.

[0153] The first openings OP1G, OP1R, and OP1B may include: a first sub-opening OP1G arranged to correspond to the first emission region PXA-G of the first pixel PX-G; a second sub-opening OP1R arranged to correspond to the second emission region PXA-R of the second pixel PX-R; and a third sub-opening OP1B arranged to correspond to the third emission region PXA-B of the third pixel PX-B. The first sub-opening OP1G may have a shape and size corresponding to the first emission region PXA-G, the second sub-opening OP1R may have a shape and size corresponding to the second emission region PXA-R, and the third sub-opening OP1B may have a shape and size corresponding to the third emission region PXA-B. Thus, as an example of the present invention, the first sub-opening OP1G, the second sub-opening OP1R, and the third sub-opening OP1B may have different sizes.

[0154] A plurality of first inclined surfaces OL1-S defining the first openings OP1G, OP1R, and OP1B may be provided in the first organic insulating layer OL1. The plurality of first inclined surfaces OL1-S may have a shape inclined with respect to the top surface of the second inorganic insulating layer IL2 and may be arranged to be at a second height h2 from the second inorganic insulating layer IL2.

[0155] The second organic insulating layer OL2 may be provided on the first inclined surface OL1-S of the first organic insulating layer OL1. That is, the second organic insulating layer OL2 may cover the first inclined surface OL1-S without covering the top surface of the first organic insulating layer OL1.

[0156] The second organic insulating layer OL2 may include an organic insulating material. Specifically, the second organic insulating layer OL2 may be made of an organic insulating material having a refractive index greater than that of the first organic insulating layer OL1.

[0157] In the second organic insulating layer OL2, a plurality of second openings OP2R and OP2B may be defined in regions corresponding to some of the openings OP1R and OP1B among the plurality of first openings OP1G, OP1R, and OP1B. Each of the second openings OP2R and OP2B may be superimposed on the emission regions PXA-R and PXA-B of the second pixel PX-R and the third pixel PX-B in a plane. As an example of the present invention, each of the second openings OP2R and OP2B may have a size smaller than that of each of the corresponding first openings OP1R and OP1B.

[0158] The second openings OP2R and OP2B may include: a fifth sub-opening OP2R, disposed corresponding to the second emission region PXA-R of the second pixel PX-R; and a sixth sub-opening OP2B, disposed corresponding to the third emission region PXA-B of the third pixel PX-B. The fifth sub-opening OP2R may have a shape and size corresponding to the second emission region PXA-R, and the sixth sub-opening OP2B may have a shape and size corresponding to the third emission region PXA-B. That is, the fifth sub-opening OP2R and the sixth sub-opening OP2B may have different sizes.

[0159] In addition, the fifth sub-opening OP2R is disposed corresponding to the second sub-opening OP1R, and the sixth sub-opening OP2B is disposed corresponding to the third sub-opening OP1B. Here, the fifth sub-opening OP2R has a size smaller than that of the second sub-opening OP1R, and the sixth sub-opening OP2B has a size smaller than that of the third sub-opening OP1B.

[0160] A plurality of second inclined surfaces OL2-S defining the second openings OP2R and OP2B may be provided in the second organic insulating layer OL2. Each of the plurality of second inclined surfaces OL2-S may have a shape inclined with respect to the top surface of the second inorganic insulating layer IL2. Here, each of the second inclined surfaces OL2-S may have the same height as the first inclined surface OL1-S.

[0161] The second organic insulating layer OL2 may cover the first inclined surface OL1-S without covering the top surface of the first organic insulating layer OL1. The plurality of second inclined surfaces OL2-S may be provided parallel to the first inclined surface OL1-S, and the plurality of second inclined surfaces OL2-S may be spaced apart from the plurality of first inclined surfaces OL1-S in a plane.

[0162] A third organic insulating layer OL3 may be provided on the second inclined surface OL2-S of the second organic insulating layer OL2. That is, the third organic insulating layer OL3 may cover the second inclined surface OL2-S without covering the top surface of the first organic insulating layer OL1.

[0163] In the third organic insulating layer OL3, a plurality of third openings OP3B may be defined in regions corresponding to some of the openings OP2B among the plurality of second openings OP2R and OP2B. Each of the third openings OP3B may overlap, in a plane, with a third emission region PXA-B of a third pixel PX-B. As an example of the present invention, each of the third openings OP3B may have a size smaller than that of each of the corresponding second openings OP2B.

[0164] The third opening OP3B may have a shape and a size corresponding to the third emission region PXA-B. In addition, the third opening OP3B is provided to correspond to a sixth sub-opening OP2B and has a size smaller than that of the sixth sub-opening OP2B.

[0165] A plurality of third inclined surfaces OL3-S defining the third opening OP3B may be provided in the third organic insulating layer OL3. Each of the plurality of third inclined surfaces OL3-S may have a shape inclined with respect to a top surface of the second inorganic insulating layer IL2. Here, each of the third inclined surfaces OL3-S may have the same height as each of the first inclined surface OL1-S and the second inclined surface OL2-S.

[0166] The third organic insulating layer OL3 may cover the second inclined surface OL2-S without covering a top surface of the second organic insulating layer OL2. The plurality of third inclined surfaces OL3-S may be provided to be parallel to the second inclined surface OL2-S, and the plurality of third inclined surfaces OL3-S may be spaced apart from the plurality of second inclined surfaces OL2-S in a plane.

[0167] Figure 10 and Figure 11 A structure is shown in which the number of inclined surfaces provided in each of the pixels PX-G, PX-R, and PX-B is different from each other. Specifically, one inclined surface OL1-S may be provided in the first pixel PX-G, two inclined surfaces OL1-S and OL2-S may be provided in the second pixel PX-R, and three inclined surfaces OL1-S, OL2-S, and OL3-S may be provided in the third pixel PX-B. However, embodiments of the present invention are not limited thereto. For example, the number of inclined surfaces provided as the first pixel PX-G may be greater than the number of inclined surfaces provided as the second pixel PX-R and the third pixel PX-B.

[0168] Figure 12 is a cross-sectional view showing a partial structure of a display device according to an embodiment of the present invention.

[0169] Refer to Figure 12, in a display device DD according to an embodiment of the present invention, a plurality of first openings OP1G, OP1R, and OP1B may be defined in the second inorganic insulating layer IL2. The first openings OP1G, OP1R, and OP1B may be formed together with contact holes CNT for partially exposing the first sensor portion SP1 in the second inorganic insulating layer IL2. That is, the contact holes CNT and the first openings OP1G, OP1R, and OP1B may be formed in the second inorganic insulating layer IL2 by a single mask process.

[0170] The first openings OP1G, OP1R, and OP1B may be set to correspond to the emission regions PXA-G, PXA-R, and PXA-B of the pixels PX-G, PX-R, and PX-B, respectively. The first openings OP1G, OP1R, and OP1B may be respectively superposed on the emission regions PXA-G, PXA-R, and PXA-B of the pixels PX-G, PX-R, and PX-B in a plane. The first openings OP1G, OP1R, and OP1B may have different sizes.

[0171] A plurality of first inclined surfaces IL2-S defining the first openings OP1G, OP1R, and OP1B may be provided in the second inorganic insulating layer IL2. Each of the plurality of first inclined surfaces IL2-S may have a shape inclined with respect to the top surface of the first inorganic insulating layer IL1. Here, the second inorganic insulating layer IL2 may have a first refractive index.

[0172] The first organic insulating layer OL1 may be provided on the second inorganic insulating layer IL2. The first organic insulating layer OL1 may include an organic insulating material. The organic insulating material may include at least one of acrylate resins, methacrylate resins, polyisoprene resins, vinyl resins, epoxy resins, polyurethane resins, cellulose resins, silicone resins, polyimide resins, polyamide resins, and perylene resins. However, this is only an example, and the organic insulating material is not limited to the above examples. The first organic insulating layer OL1 may be made of an organic insulating material having a refractive index greater than that of the second inorganic insulating layer IL2.

[0173] A plurality of second openings OP2G, OP2R, and OP2B may be respectively defined in the first organic insulating layer OL1 in regions corresponding to the plurality of first openings OP1G, OP1R, and OP1B. The second openings OP2G, OP2R, and OP2B may be respectively superposed on the emission regions PXA-G, PXA-R, and PXA-B of the pixels PX-G, PX-R, and PX-B in a plane. As an example of the present invention, each of the second openings OP2G, OP2R, and OP2B may have a size smaller than that of each of the corresponding first openings OP1G, OP1R, and OP1B.

[0174] A plurality of second inclined surfaces OL1-S defining the second openings OP2G, OP2R, and OP2B may be provided in the first organic insulating layer OL1. Each of the plurality of second inclined surfaces OL1-S may have a shape inclined with respect to the top surface of the first inorganic insulating layer IL1.

[0175] The first organic insulating layer OL1 is formed to cover the top surface of the second inorganic insulating layer IL2 and the plurality of first inclined surfaces IL2-S. Accordingly, each of the second inclined surfaces OL1-S may have a height greater than the height of the first inclined surfaces IL2-S. In addition, the plurality of second inclined surfaces OL1-S may be provided to be spaced apart from the plurality of first inclined surfaces IL2-S in a plane. That is, each of the plurality of second inclined surfaces OL1-S may be provided closer to the corresponding emission regions PXA-G, PXA-R, or PXA-B than the corresponding first inclined surfaces IL2-S.

[0176] The second organic insulating layer OL2 may be provided on the first organic insulating layer OL1. The second organic insulating layer OL2 may include an organic insulating material. The second organic insulating layer OL2 may be made of an organic insulating material having a refractive index greater than the refractive index of the first organic insulating layer OL1.

[0177] In the second organic insulating layer OL2, a plurality of third openings OP3G, OP3R, and OP3B may be respectively defined in regions corresponding to the plurality of second openings OP2G, OP2R, and OP2B. The third openings OP3G, OP3R, and OP3B may be respectively superposed on the emission regions PXA-G, PXA-R, and PXA-B of the pixels PX-G, PX-R, and PX-B in a plane. As an example of the present invention, each of the third openings OP3G, OP3R, and OP3B may have a size smaller than the size of each of the corresponding second openings OP2G, OP2R, and OP2B.

[0178] A plurality of third inclined surfaces OL2-S defining the third openings OP3G, OP3R, and OP3B may be provided in the second organic insulating layer OL2. Each of the plurality of third inclined surfaces OL2-S may have a shape inclined with respect to the top surface of the first inorganic insulating layer IL1.

[0179] The second organic insulating layer OL2 may be formed to cover the top surface of the first organic insulating layer OL1 and the plurality of second inclined surfaces OL1-S. Accordingly, each of the third inclined surfaces OL2-S may have a height greater than the height of each of the second inclined surfaces OL1-S. In addition, the plurality of third inclined surfaces OL2-S may be provided to be spaced apart from the plurality of second inclined surfaces OL1-S in a plane. That is, each of the plurality of third inclined surfaces OL2-S may be provided closer to the corresponding emission region PXA-G, PXA-R, or PXA-B than the corresponding second inclined surface OL1-S.

[0180] The high refractive index insulating layer HRL may be provided on the second organic insulating layer OL2. The high refractive index insulating layer HRL may have a refractive index greater than the refractive index of the second organic insulating layer OL2. As an example of the present invention, the high refractive index insulating layer HRL may have a refractive index of 1.65 or more and 1.70 or less. The high refractive index insulating layer HRL may include an organic insulating material having a refractive index greater than the refractive index of the organic insulating material forming the second organic insulating layer OL2. The high refractive index insulating layer HRL may be provided to fill into the third openings OP3G, OP3R, and OP3B. The high refractive index insulating layer HRL may have a flat top surface.

[0181] As described above, in each of the pixels PX-G, PX-R, and PX-B, an opening may be formed in an insulating layer having a different refractive index, and an inclined surface for reflecting side light may be formed due to the difference in refractive index. Accordingly, the optical path of the side light emitted from the organic light emitting diode OLED may be changed to a forward direction through the inclined surfaces IL2-S, OL1-S, and OL2-S, and thus, the light efficiency of the display device DD may be improved.

[0182] Figure 13 is a cross-sectional view showing a partial structure of a display device according to an embodiment of the present invention.

[0183] Referring to Figure 13 , in the display device DD according to an embodiment of the present invention, the input sensing unit ISP may include a first interlayer insulating layer IIL1 and a second interlayer insulating layer IIL2 provided between the first sensor unit SP1 and the first connection unit CP1. That is, the first interlayer insulating layer IIL1 may be provided on the first sensor unit SP1, and the second interlayer insulating layer IIL2 may be provided on the first interlayer insulating layer IIL1.

[0184] The first interlayer insulating layer IIL1 and the second interlayer insulating layer IIL2 separate and isolate the first sensor portion SP1 from the first connection portion CP1 in a cross-section. Contact holes CNT for partially exposing the first sensor portion SP1 may be provided in the first interlayer insulating layer IIL1 and the second interlayer insulating layer IIL2, and the first connection portion CP1 may be connected to the first sensor portion SP1 through the contact holes CNT.

[0185] The first interlayer insulating layer IIL1 may have a first refractive index, and the first interlayer insulating layer IIL1 may include an organic insulating material. The second interlayer insulating layer IIL2 may include an inorganic insulating material.

[0186] A plurality of first openings OP1G, OP1R, and OP1B may be defined in the first interlayer insulating layer IIL1 and the second interlayer insulating layer IIL2. The first openings OP1G, OP1R, and OP1B may be provided to correspond to the emission regions PXA-G, PXA-R, and PXA-B of the pixels PX-G, PX-R, and PX-B, respectively. The first openings OP1G, OP1R, and OP1B may be superimposed on the emission regions PXA-G, PXA-R, and PXA-B of the pixels PX-G, PX-R, and PX-B, respectively, in a plane. The first openings OP1G, OP1R, and OP1B may have different sizes.

[0187] A plurality of first inclined surfaces IIL1-S defining the first openings OP1G, OP1R, and OP1B may be provided in the first interlayer insulating layer IIL1, and a plurality of second inclined surfaces IIL2-S defining the first openings OP1G, OP1R, and OP1B may be provided in the second interlayer insulating layer IIL2. Each of the plurality of first inclined surfaces IIL1-S and the plurality of second inclined surfaces IIL2-S may have a shape inclined with respect to the top surface of the first inorganic insulating layer IL1.

[0188] The first openings OP1G, OP1R, and OP1B may be formed together with the contact holes CNT for partially exposing the first sensor portion SP1 to the first interlayer insulating layer IIL1 and the second interlayer insulating layer IIL2. That is, the contact holes CNT and the first openings OP1G, OP1R, and OP1B may be formed in the first interlayer insulating layer IIL1 and the second interlayer insulating layer IIL2 through a single mask process.

[0189] The first connection portion CP1 may be provided on the second interlayer insulating layer IIL2, and an organic insulating layer OL may be provided on the first connection portion CP1. The organic insulating layer OL may have a second refractive index. The organic insulating layer OL may include an organic insulating material. The organic insulating layer OL may have a refractive index greater than that of each of the first interlayer insulating layer IIL1 and the second interlayer insulating layer IIL2.

[0190] In the organic insulating layer OL, a plurality of second openings OP2G, OP2R, and OP2B may be respectively defined in regions corresponding to the plurality of first openings OP1G, OP1R, and OP1B. The second openings OP2G, OP2R, and OP2B may be respectively superposed on the emission regions PXA-G, PXA-R, and PXA-B of the pixels PX-G, PX-R, and PX-B in a plane. As an example of the present invention, each of the second openings OP2G, OP2R, and OP2B may have a size smaller than that of each of the corresponding first openings OP1G, OP1R, and OP1B.

[0191] A plurality of third inclined surfaces OL-S defining the second openings OP2G, OP2R, and OP2B may be provided in the organic insulating layer OL. Each of the plurality of third inclined surfaces OL-S has a shape inclined with respect to the top surface of the first inorganic insulating layer IL1.

[0192] The organic insulating layer OL is formed to cover the top surface of the second interlayer insulating layer IIL2 and a plurality of first inclined surfaces IIL1-S and a plurality of second inclined surfaces IIL2-S of the first interlayer insulating layer IIL-1 and the second interlayer insulating layer IIL-2. Therefore, each of the third inclined surfaces OL-S may have a height greater than the sum of the heights of the first inclined surfaces IIL1-S and the second inclined surfaces IIL2-S. In addition, each of the plurality of third inclined surfaces OL-S may be provided closer to the corresponding emission region PXA-G, PXA-R, or PXA-B than each of the corresponding first inclined surfaces IIL1-S and second inclined surfaces IIL2-S.

[0193] In Figure 12 and Figure 13 , openings for providing inclined surfaces for the insulating layers IL2, IIL1, and IIL2 provided between the first sensor unit SP1 and the first connection unit CP1 may be formed together during the process of forming the contact hole CNT, so as to reduce the number of masks compared with the embodiment shown in Figures 6 to 11 .

[0194] It will be apparent to those skilled in the art that various modifications and deviations can be made in the present invention. Therefore, as long as the modifications and deviations of the present invention fall within the scope of the appended claims and their equivalents, the present invention is intended to cover them. Therefore, the technical scope of the present invention should not be limited to the content described in the detailed description of the specification, but should be determined by the claims.

[0195] Industrial Applicability

[0196] In an input sensing unit including a plurality of insulating layers, a technique of providing an inclined surface for reflecting side light emitted at different emission angles in a forward direction is one of techniques required for a display device to improve the light efficiency of the display device. Specifically, a display device according to the present invention having a plurality of inclined surfaces spaced apart from each other on a plane so as to change an optical path of side light in front reflection has high industrial applicability.

Claims

1. A display device, the display device comprising: A display panel including a plurality of emission regions and non-emission regions defined between the plurality of emission regions; A first insulating layer disposed on the display panel, having a first refractive index, and in the first insulating layer, a plurality of first openings are defined in regions overlapping with the plurality of emission regions; A second insulating layer having a second refractive index, and in the second insulating layer, a plurality of second openings are defined in regions corresponding to the plurality of first openings; And A high refractive index insulating layer disposed on the first insulating layer and the second insulating layer to overlap with the plurality of emission regions, and having a third refractive index greater than each of the first refractive index and the second refractive index, Wherein, the first insulating layer includes a first inclined surface defining the plurality of first openings, and the second insulating layer includes a second inclined surface defining the plurality of second openings, and The first inclined surface and the second inclined surface are arranged to be spaced apart from each other in a plane.

2. The display device according to claim 1, wherein The first inclined surface and the second inclined surface are disposed in the non-emission region.

3. The display device according to claim 1, wherein, The second insulating layer is disposed on the first insulating layer and covers the top surface of the first insulating layer and the first inclined surface of the first insulating layer.

4. The display device according to claim 3, wherein, The second refractive index is greater than the first refractive index.

5. The display device according to claim 3, wherein, The first inclined surface has a height smaller than the height of the second inclined surface.

6. The display device according to claim 3, the display device further comprising a third insulating layer having a fourth refractive index, and in the third insulating layer, a plurality of third openings are defined in regions corresponding to the plurality of second openings.

7. The display device according to claim 6, wherein, The third insulating layer includes a third inclined surface defining the plurality of third openings, and The third inclined surface is arranged to be spaced apart from the first inclined surface and the second inclined surface in a plane.

8. The display device according to claim 7, wherein, The third insulating layer covers the top surface of the second insulating layer and the second inclined surface of the second insulating layer.

9. The display device according to claim 8, wherein, The fourth refractive index is greater than the second refractive index, the second refractive index is greater than the first refractive index, and the third refractive index is greater than the fourth refractive index.

10. The display device according to claim 8, wherein, The third inclined surface has a height greater than the height of each of the first inclined surface and the second inclined surface.

11. The display device according to claim 1, wherein, The second insulating layer covers the first inclined surface of the first insulating layer and does not cover the top surface of the first insulating layer, and The first inclined surface has the same height as the height of the second inclined surface.

12. The display device according to claim 11, wherein, The second refractive index is greater than the first refractive index.

13. The display device according to claim 11, the display device further comprising a third insulating layer having a fourth refractive index, and in the third insulating layer, a plurality of third openings are defined in regions corresponding to the plurality of second openings.

14. The display device according to claim 13, wherein, The third insulating layer covers the second inclined surface of the second insulating layer and does not cover the top surface of each of the first insulating layer and the second insulating layer, the third insulating layer has a third inclined surface defining the plurality of third openings, and The third inclined surface has a height that is the same as the height of each of the first inclined surface and the second inclined surface.

15. The display device according to claim 14, wherein, The fourth refractive index is greater than the second refractive index, the second refractive index is greater than the first refractive index, and the third refractive index is greater than the fourth refractive index.

16. The display device according to claim 1, wherein, Each of the first openings has a size that is larger than the size of each of the second openings.

17. The display device according to claim 16, wherein, The high refractive index insulating layer is filled into each of the plurality of second openings.

18. The display device according to claim 1, wherein the display device further comprises: a first conductive layer disposed on the display panel; and a second conductive layer disposed on the first conductive layer.

19. The display device according to claim 18, wherein the display device further comprises an interlayer insulating layer disposed between the first conductive layer and the second conductive layer, Among them, and the first insulating layer is disposed on the second conductive layer.

20. The display device according to claim 19, wherein, The first conductive layer includes a sensor portion, the second conductive layer includes a connection portion, a contact hole is defined in the interlayer insulating layer, and the connection portion is electrically connected to the sensor portion.

21. The display device according to claim 20, wherein, Each of the sensor portions has a grid shape, and the sensor portions do not overlap with the plurality of emission regions in a plane.

22. The display device according to claim 18, wherein, The first insulating layer is disposed between the first conductive layer and the second conductive layer.

23. The display device according to claim 20, wherein, The second insulating layer is disposed on the second conductive layer to cover the second conductive layer.

24. The display device according to claim 1, wherein, Each of the first insulating layer, the second insulating layer, and the high refractive index insulating layer includes an organic insulating material.

25. A display device, the display device comprising: a display panel including a plurality of pixels and a thin film encapsulation layer, each of the plurality of pixels being provided with a light emitting element that emits light to display an image, and the thin film encapsulation layer covering the plurality of pixels; and an input sensing unit directly disposed on the thin film encapsulation layer, wherein the display panel includes a plurality of emission regions corresponding to the light emitting elements and non-emission regions defined between the plurality of emission regions, the input sensing unit includes: a first insulating layer having a first refractive index, and in the first insulating layer, a plurality of first openings are defined in a region overlapping with the plurality of emission regions; a second insulating layer having a second refractive index, and in the second insulating layer, a plurality of second openings are defined in a region corresponding to the plurality of first openings; and a high refractive index insulating layer disposed on the first insulating layer and the second insulating layer to overlap with the plurality of emission regions and having a third refractive index greater than each of the first refractive index and the second refractive index, the first insulating layer includes a first inclined surface defining the plurality of first openings, and the second insulating layer includes a second inclined surface defining the plurality of second openings, and the first inclined surface and the second inclined surface are arranged to be spaced apart from each other in a plane.

26. The display device according to claim 25, wherein, The input sensing unit includes: a substrate layer directly disposed on the thin film encapsulation layer; a first conductive layer disposed on the substrate layer; and a second conductive layer disposed on the first conductive layer.

27. The display device according to claim 26, wherein the display device further includes an interlayer insulating layer disposed between the first conductive layer and the second conductive layer, Among them, The first insulating layer is disposed on the second conductive layer.

28. The display device according to claim 25, wherein, The first inclined surface and the second inclined surface are disposed in the non-emitting region, and The second insulating layer is disposed on the first insulating layer and covers the top surface of the first insulating layer and the first inclined surface of the first insulating layer.

29. The display device according to claim 28, wherein, The second refractive index is greater than the first refractive index.

30. The display device according to claim 25, wherein, The second insulating layer covers the first inclined surface of the first insulating layer and does not cover the top surface of the first insulating layer, and The first inclined surface has the same height as the height of the second inclined surface.

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