Display device

Abstract

A display device includes: a substrate; a light emitting element layer disposed on the substrate, the light emitting element layer including a pixel defining layer defining a plurality of emission regions and non-emission regions; an encapsulation layer disposed on the light emitting element layer; a touch sensing layer disposed on the encapsulation layer, the touch sensing layer including a touch connection electrode, a driving electrode, and a color pattern disposed between the touch connection electrode and the driving electrode; a color filter layer disposed on the touch sensing layer, the color filter layer including a plurality of color filters; and an overcoat layer disposed on the color filter layer, in which the color pattern overlaps with at least one of the plurality of emission regions and the non-emission region, and in which the plurality of color filters do not overlap with the emission region that overlaps with the color pattern.

Description

Technical Field

[0001] The present disclosure relates to a display device, and more particularly, to a display device including a color pattern within a touch sensing layer. Background Art

[0002] As information-oriented society progresses, there is a demand for display devices that display images in various ways. For example, display devices are used in various electronic devices such as smartphones, digital cameras, laptop computers, navigation devices, and smart TVs.

[0003] The display device may be a flat panel display device such as a liquid crystal display (LCD), a field emission display, and a light-emitting display. Examples of light-emitting display devices include organic light-emitting diode (OLED) display devices composed of organic light-emitting elements, inorganic light-emitting display devices composed of inorganic light-emitting elements such as inorganic semiconductors, and micro-light-emitting display devices composed of micro-light-emitting elements.

[0004] The organic light emitting element may include two opposing electrodes and a light emitting layer interposed between the two opposing electrodes. The light emitting layer receives electrons and holes from the two electrodes, respectively, and recombines them to generate excitons, and the generated excitons change from an excited state to a ground state, thereby emitting light.

[0005] Organic light emitting diode (OLED) display devices including organic light emitting elements are attracting attention as next-generation display devices because they can meet high display quality requirements such as wide viewing angle, high brightness and contrast, and fast response speed, and because they do not require a separate light source such as a backlight unit, they can be made into a design with low power consumption, lightweight and thin. Utility Model Content

[0006] A display device includes: a substrate; a light-emitting element layer arranged on the substrate, the light-emitting element layer including a pixel defining layer defining multiple emission areas and non-emission areas; an encapsulation layer arranged on the light-emitting element layer; a touch sensing layer arranged on the encapsulation layer, the touch sensing layer including a touch connection electrode, a drive electrode, and a color pattern arranged between the touch connection electrode and the drive electrode; a color filter layer arranged on the touch sensing layer, the color filter layer including multiple color filters; and an outer coating layer arranged on the color filter layer, wherein the color pattern overlaps with at least one of the multiple emission areas and the non-emission area, and wherein the multiple color filters do not overlap with the emission area overlapping with the color pattern.

[0007] The plurality of emission areas may include a first emission area that emits a first light, a second emission area that emits a second light, and a third emission area that emits a third light, and wherein the color pattern may overlap with the first emission area, the second emission area, and / or the third emission area.

[0008] The plurality of color filters may respectively overlap different emission areas among the remaining emission areas except for the emission area overlapped with the color pattern.

[0009] The color pattern may overlap with the third emission area and may not overlap with the first emission area or the second emission area.

[0010] The plurality of color filters may include a first color filter transmitting the first light and a second color filter transmitting the second light, and wherein the first color filter may overlap the first emission area and the second color filter may overlap the second emission area.

[0011] The color pattern and the plurality of color filters may overlap each other in the non-emission region.

[0012] The lateral side of the color pattern may be disposed at a distance not exceeding 2 μm outward from the lateral side of the pixel defining layer and at a position not exceeding 1 μm inward from the lateral side of the pixel defining layer.

[0013] A display device includes: a substrate; a light-emitting element layer arranged on the substrate, the light-emitting element layer including a pixel defining layer defining a plurality of emission areas and non-emission areas; an encapsulation layer arranged on the light-emitting element layer; a touch sensing layer arranged on the encapsulation layer, the touch sensing layer including a touch connection electrode, a drive electrode, and a color pattern arranged between the touch connection electrode and the drive electrode; a color filter layer arranged on the touch sensing layer, the color filter layer including a first color filter and a second color filter; and an outer coating layer arranged on the color filter layer, wherein the color pattern overlaps with at least one of the plurality of emission areas and the non-emission area, wherein the first color filter does not overlap with the emission area overlapping with the color pattern, and wherein the second color filter overlaps with the emission area overlapping with the color pattern.

[0014] The multiple emission areas may include a first emission area that emits red light, a second emission area that emits blue light, and a third emission area that emits green light, and wherein the color pattern may overlap with the first emission area, the first color filter may overlap with the second emission area, and the second color filter may overlap with the first emission area and the third emission area.

[0015] The color pattern may be a red filter that transmits red light, the first color filter may be a blue filter that transmits blue light, and the second color filter may be a yellow filter that transmits red light and green light.

[0016] The color pattern, the first color filter, and the second color filter may overlap each other in the non-emission area.

[0017] The color pattern may not overlap with the second and third emission areas, the first color filter may not overlap with the first and third emission areas, and the second color filter may not overlap with the second emission area.

[0018] A display device includes: a substrate; a light-emitting element layer disposed on the substrate, the light-emitting element layer including a pixel defining layer defining a plurality of emission areas and non-emission areas; an encapsulation layer disposed on the light-emitting element layer; a touch sensing layer disposed on the encapsulation layer, the touch sensing layer including a plurality of touch electrodes; a color filter layer disposed on the touch sensing layer, the color filter layer including a plurality of color filters; and an outer coating layer disposed on the color filter layer, wherein the plurality of color filters include a first color filter and a second color filter, wherein the first color filter overlaps with one of the plurality of emission areas, and wherein the second color filter overlaps with the remaining two or more emission areas among the plurality of emission areas.

[0019] The multiple emission areas may include a first emission area that emits red light, a second emission area that emits blue light, and a third emission area that emits green light, and wherein the first color filter may be a blue filter that transmits blue light, and the second color filter may be a yellow filter that transmits red light and green light.

[0020] The first color filter may overlap the second emission region and the non-emission region, and the second color filter may overlap the first emission region, the third emission region, and the non-emission region.

[0021] A display device includes: a substrate; a light-emitting element layer disposed on the substrate and including a pixel-defining layer defining a plurality of emission regions and a non-emission region; an encapsulation layer disposed on the light-emitting element layer; a touch sensing layer disposed on the encapsulation layer and including a touch connection electrode, a drive electrode, and a color pattern disposed between the touch connection electrode and the drive electrode; a color filter layer disposed on the touch sensing layer and including a plurality of color filters; and an overcoat layer disposed on the color filter layer. The color pattern overlaps with at least one of the plurality of emission regions and the non-emission region, and the plurality of color filters do not overlap with the emission region overlapping with the color pattern.

[0022] The plurality of emission areas may include a first emission area emitting a first light, a second emission area emitting a second light, and a third emission area emitting a third light, and the color pattern may overlap with the first emission area, the second emission area, and / or the third emission area.

[0023] The plurality of color filters may respectively overlap different emission areas among the remaining emission areas except for the emission area overlapped with the color pattern.

[0024] The first light may be red light, the second light may be blue light, and the third light may be green light.

[0025] The color pattern may overlap with the third emission area and may not overlap with the first emission area or the second emission area.

[0026] The color pattern may include a colorant that transmits the third light and absorbs the first light and the second light.

[0027] The plurality of color filters may include a first color filter transmitting the first light and a second color filter transmitting the second light, and the first color filter may overlap the first emission area and the second color filter may overlap the second emission area.

[0028] The color pattern and the plurality of color filters may overlap each other in the non-emission region.

[0029] The color pattern may have a refractive index smaller than that of the plurality of color filters.

[0030] The color pattern may have a refractive index that is at least 0.05 less than a refractive index of the plurality of color filters.

[0031] The outer coating may contain a dye having a maximum absorption wavelength of 490 nm and / or a dye having a maximum absorption wavelength of 590 nm.

[0032] The dye may absorb light in a wavelength band of 480 nm to 500 nm or 580 nm to 600 nm.

[0033] The lateral side of the color pattern may be disposed at a distance not exceeding 2 μm outward from the lateral side of the pixel defining layer and at a position not exceeding 1 μm inward from the lateral side of the pixel defining layer.

[0034] A display device includes: a substrate; a light-emitting element layer disposed on the substrate and including a pixel-defining layer defining a plurality of emission regions and non-emission regions; an encapsulation layer disposed on the light-emitting element layer; a touch sensing layer disposed on the encapsulation layer and including a touch connection electrode, a drive electrode, and a color pattern disposed between the touch connection electrode and the drive electrode; a color filter layer disposed on the touch sensing layer and including a first color filter and a second color filter; and an overcoat layer disposed on the color filter layer. The color pattern overlaps at least one of the plurality of emission regions and the non-emission region, the first color filter does not overlap with the emission region overlapping with the color pattern, and the second color filter overlaps with the emission region overlapping with the color pattern.

[0035] The plurality of emission regions may include a first emission region emitting a first light of a red color, a second emission region emitting a second light of a blue color, and a third emission region emitting a third light of a green color. The color pattern may overlap with the first emission region, the first color filter may overlap with the second emission region, and the second color filter may overlap with the first emission region and the third emission region.

[0036] The color pattern may be a red filter that transmits the first light, the first filter may be a blue filter that transmits the second light, and the second filter may be a yellow filter that transmits the first light and the third light.

[0037] The color pattern, the first color filter, and the second color filter may overlap each other in the non-emission area.

[0038] The color pattern may not overlap with the second emission area and the third emission area. The first color filter may not overlap with the first emission area and the third emission area. The second color filter may not overlap with the second emission area.

[0039] A display device includes: a substrate; a light-emitting element layer disposed on the substrate; a light-emitting layer including a pixel-defining layer defining a plurality of emission regions and a non-emission region; an encapsulation layer disposed on the light-emitting element layer; a touch sensing layer disposed on the encapsulation layer, the touch sensing layer including a plurality of touch electrodes; a color filter layer disposed on the touch sensing layer, the color filter layer including a plurality of color filters; and an overcoat layer disposed on the color filter layer. The plurality of color filters include a first color filter and a second color filter. The first color filter overlaps one of the plurality of emission regions. The second color filter overlaps two or more of the remaining emission regions.

[0040] The plurality of emission regions may include a first emission region emitting red light, a second emission region emitting blue light, and a third emission region emitting green light. The first color filter may be a blue color filter that transmits blue light, and the second color filter may be a yellow color filter that transmits red light and green light.

[0041] The first color filter may overlap the second emission area and the non-emission area. The second color filter may overlap the first emission area, the third emission area, and the non-emission area. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The above and other aspects and features of the present disclosure will become more apparent by describing in detail embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0043] Figure 1 is a schematic perspective view of an electronic device according to an embodiment;

[0044] Figure 2 is a perspective view showing a foldable electronic device in a folded state according to an embodiment;

[0045] Figure 3 It shows Figure 2 A perspective view of a foldable electronic device in an unfolded state;

[0046] Figure 4is a perspective view showing a display device included in an electronic device according to an embodiment;

[0047] Figure 5 Observed from the side Figure 4 A cross-sectional view of a display device;

[0048] Figure 6 is a plan view showing a display layer of a display device according to an embodiment;

[0049] Figure 7 is a plan view showing a touch sensing layer of a display device according to an embodiment;

[0050] Figure 8 is a plan view of an arrangement of emission regions in a display region of a display device according to an embodiment;

[0051] Figure 9 is shown in the settings Figure 8 a plan view of the arrangement of color filters in the display area;

[0052] Figure 10 It is along Figure 8 A cross-sectional view taken along line XX';

[0053] Figure 11 yes Figure 10 An enlarged cross-sectional view of a portion of the area;

[0054] Figure 12 is a cross-sectional view schematically showing an outer coating layer of a display device according to an embodiment;

[0055] Figure 13 yes Figure 10 An enlarged cross-sectional view of a portion of the area;

[0056] Figure 14 is a plan view showing a second emission region and a second opening;

[0057] Figures 15 to 18 are cross-sectional views showing each step of a method for manufacturing a display device according to an embodiment;

[0058] Figure 19 is a cross-sectional view schematically showing a display device according to an embodiment;

[0059] Figure 20 is a cross-sectional view schematically showing a display device according to yet another embodiment;

[0060] Figure 21 is a graph obtained by simulating a red light efficiency ratio according to a distance between a lateral side of a pixel defining layer and a lateral side of a color pattern;

[0061] Figure 22 is a graph obtained by simulating a blue light efficiency ratio according to a distance between a lateral side of a pixel defining layer and a lateral side of a color pattern;

[0062] Figure 23 is a graph showing transmittance in a wavelength band of a yellow filter used in a simulation;

[0063] Figure 24 is a graph showing transmittance in a wavelength band of a dye having a maximum absorption wavelength of 490 nm used in the simulation; and

[0064] Figure 25 : is a graph showing the transmittance in the wavelength band of the dye having the maximum absorption wavelength of 590 nm used in the simulation. DETAILED DESCRIPTION

[0065] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. However, the present invention may be embodied in many different forms and should not necessarily be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those skilled in the art.

[0066] It will also be understood that when a layer or substrate is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate, or intervening layers or substrates may be present. Throughout the specification and drawings, like reference numerals may refer to like components.

[0067] It will be understood that although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not necessarily be limited by these terms. These terms are used to distinguish one element from another. For example, the first element discussed below may be referred to as the second element without departing from the teachings of the present invention. Similarly, the second element may also be referred to as the first element.

[0068] Each of the multiple features of the various embodiments of the present disclosure can be combined in part or in whole or in combination with each other, and various interlocks and drives are technically possible. Each embodiment can be implemented independently of each other or can be implemented together in association.

[0069] Hereinafter, embodiments will be described with reference to the accompanying drawings.

[0070] Figure 1 is a schematic perspective view of an electronic device according to an embodiment.

[0071] refer to Figure 1, the electronic device 1 displays a moving image or a still image. The electronic device 1 may refer to any electronic device that provides a display screen. Examples of the electronic device 1 may include televisions that provide a display screen, laptop computer displays, computer monitors, digital billboards, IoT devices, mobile phones, smartphones, tablet computers, electronic watches, smart watches, watch phones, head-mounted displays, mobile communication terminals, electronic notebooks, electronic books, portable multimedia players (PMPs), navigation devices, portable game consoles, digital cameras, and video cameras.

[0072] The electronic device 1 may include Figure 4 . The display device 10 provides a display screen as shown in FIG. Examples of the display device 10 may include an inorganic light emitting diode display device, an organic light emitting diode (OLED) display device, a quantum dot light emitting display device, a plasma display device, and a field emission display device. In the following description, an organic light emitting diode (OLED) display device is used as the display device 10. However, the present disclosure is not necessarily limited thereto, and other display devices may be applied within the scope of the same technical spirit.

[0073] The shape of the electronic device 1 in plan view can be modified in various ways. For example, in plan view, the electronic device 1 can have a shape such as a horizontally elongated rectangle, a vertically elongated rectangle, a square, a quadrilateral with rounded corners (vertices), another polygonal shape, or a circular shape. In plan view, the shape of the display area DA of the electronic device 1 can also be similar to the overall shape of the electronic device 1. Figure 1 The electronic device 1 is shown having a rectangular shape elongated in the second direction DR2 .

[0074] The electronic device 1 may include a display area DA and a non-display area NDA. The display area DA is an area where images can be displayed, and the non-display area NDA is an area where images are not displayed. The display area DA may also be referred to as an active area, and the non-display area NDA may also be referred to as a non-active area. The display area DA may substantially occupy the center of the electronic device 1.

[0075] Figure 2 is a perspective view illustrating a foldable electronic device in a folded state according to an embodiment. Figure 3 It shows Figure 2 A perspective view of a foldable electronic device in an unfolded state.

[0076] refer to Figure 2 and Figure 3According to an embodiment, the electronic device 1 may be a foldable electronic device 1. The foldable electronic device 1 may be foldable about a folding axis FL. The display area DA may be provided outside and / or inside the foldable electronic device 1. In an embodiment, Figure 2 and Figure 3 The foldable electronic device 1 shows that the display area DA is provided in each of the exterior and the interior of the foldable electronic device 1 .

[0077] The display area DA may be provided outside the electronic device 1. An outer surface of the folded electronic device 1 may include the display area DA, and an inner surface of the unfolded electronic device 1 may include the display area DA.

[0078] Figure 4 is a perspective view showing a display device included in an electronic device according to an embodiment.

[0079] refer to Figure 4 According to an embodiment, the electronic device 1 (see Figure 1 ) may include a display device 10. The display device 10 may provide an image displayed by the electronic device 1. The display device 10 may have a planar shape similar to the planar shape of the electronic device 1. For example, the display device 10 may have a planar shape similar to a rectangular shape having a pair of short sides extending in the first direction DR1 and a pair of long sides extending in the second direction DR2. The corners where the short sides in the first direction DR1 and the long sides in the second direction DR2 intersect may be rounded to have a desired degree of curvature, but are not necessarily limited thereto, and may be formed as right angles. The planar shape of the display device 10 is not necessarily limited to a quadrilateral shape, and may be formed in a shape similar to another polygonal shape, a circular shape, or an elliptical shape.

[0080] The display device 10 may include a display panel 100 , a display driver 200 , a circuit board 300 , and a touch driver 400 .

[0081] The display panel 100 may include a main area MA and a sub-area SBA.

[0082] The main area MA may include a display area DA containing pixels that display an image and a non-display area NDA that at least partially surrounds the display area DA. The display area DA may emit light from multiple emission areas or multiple opening areas. For example, the display panel 100 may include a pixel circuit including a switching element, a pixel defining layer that defines the emission area or the opening area, and a self-luminous element.

[0083] For example, the self-luminous element may include an organic light emitting diode (OLED) including an organic light emitting layer, a quantum dot light emitting diode including a quantum dot light emitting layer, an inorganic light emitting diode including an inorganic semiconductor, and / or a micro light emitting diode, but is not necessarily limited thereto.

[0084] The non-display area NDA may be an area outside the display area DA. The non-display area NDA may be defined as an edge area of ​​the main area MA of the display panel 100. The non-display area NDA may include a gate driver that supplies gate signals to gate lines and a fan-out line that connects the display driver 200 to the display area DA.

[0085] The sub-area SBA may be an area extending from one side of the main area MA. The sub-area SBA may include a flexible material that can be bent, folded, or curled to a significant degree without breaking or otherwise being damaged. For example, when the sub-area SBA is bent, the sub-area SBA may overlap with the main area MA in the thickness direction (third direction DR3). The sub-area SBA may include a display driver 200 and a pad portion connected to the circuit board 300. In an embodiment, the sub-area SBA may be omitted, and the display driver 200 and the pad portion may be arranged in the non-display area NDA.

[0086] The display driver 200 can output signals and voltages for driving the display panel 100. The display driver 200 can supply data voltages to the data lines. The display driver 200 can supply power voltages to the power lines and can supply gate control signals to the gate driver. The display driver 200 can be formed as an integrated circuit (IC) and mounted on the display panel 100 using a chip-on-glass (COG) method, a chip-on-plastic (COP) method, or an ultrasonic bonding method. For example, the display driver 200 can be disposed in the sub-area SBA and can overlap with the main area MA in the thickness direction by bending the sub-area SBA. As another example, the display driver 200 can be mounted on the circuit board 300.

[0087] The circuit board 300 may be attached to the pad portion of the display panel 100 using an anisotropic conductive film (ACF). Leads of the circuit board 300 may be electrically connected to the pad portion of the display panel 100. The circuit board 300 may be a flexible printed circuit board, a printed circuit board, or a flexible film such as a chip on film.

[0088] The touch driver 400 may be mounted on the circuit board 300. The touch driver 400 may be connected to the touch sensing unit of the display panel 100. The touch driver 400 may supply a touch drive signal to the touch electrodes of the touch sensing unit and may sense the change in capacitance between the touch electrodes. For example, the touch drive signal may be a pulse signal having a predetermined frequency. The touch driver 400 may determine whether an input has been made based on the change in capacitance between the touch electrodes and calculate the input coordinates. The touch driver 400 may be formed as an integrated circuit (IC).

[0089] Figure 5Observed from the side Figure 4 sectional view of a display device.

[0090] refer to Figure 5 The display panel 100 may include a display layer DU, a touch sensing layer TSU, and a color filter layer CFL. The display layer DU may include a substrate SUB, a thin film transistor layer TFTL, a light emitting element layer EML, and an encapsulation layer TFEL.

[0091] The substrate SUB may be a base substrate or a base member. The substrate SUB may be a flexible substrate that can be bent, folded, or curled to a significant degree without breaking or otherwise being damaged. For example, the substrate SUB may include a polymer resin such as polyimide (PI), but is not necessarily limited thereto. In an embodiment, the substrate SUB may include glass or metal.

[0092] The thin film transistor layer TFTL may be disposed on the substrate SUB. The thin film transistor layer TFTL may include a plurality of thin film transistors constituting pixel circuits of the pixels. The thin film transistor layer TFTL may also include gate lines, data lines, power lines, gate control lines, fan-out lines connecting the display driver 200 to the data lines, and leads connecting the display driver 200 to the pad portion. Each of the plurality of thin film transistors may include a semiconductor region, a source electrode, a drain electrode, and a gate electrode. For example, when a gate driver is formed on one side of the non-display area NDA of the display panel 100, the gate driver may include a thin film transistor.

[0093] The thin film transistor layer TFTL may be disposed in the display area DA, the non-display area NDA, and the sub-area SBA. The thin film transistors, gate lines, data lines, and power lines of each of the multiple pixels of the thin film transistor layer TFTL may be disposed in the display area DA. Gate control lines and fan-out lines of the thin film transistor layer TFTL may be disposed in the non-display area NDA. Lead lines of the thin film transistor layer TFTL may be disposed in the sub-area SBA.

[0094] The light-emitting element layer (EML) may be disposed on the thin film transistor layer (TFTL). The light-emitting element layer (EML) may include a plurality of light-emitting elements, each including a first electrode, a second electrode, and a light-emitting layer for emitting light, and a pixel-defining layer defining pixels. The plurality of light-emitting elements of the light-emitting element layer (EML) may be disposed in the display area (DA).

[0095] In an embodiment, the light-emitting layer may be an organic light-emitting layer including an organic material. The light-emitting layer may include a hole transport layer, an organic light-emitting layer, and an electron transport layer. When the first electrode receives a voltage through the thin film transistor of the thin film transistor layer TFTL and the second electrode receives a cathode voltage, holes and electrons may be respectively transported to the organic light-emitting layer through the hole transport layer and the electron transport layer and may be recombined with each other to emit light in the organic light-emitting layer.

[0096] In an embodiment, the light emitting element may include a quantum dot light emitting diode including a quantum dot light emitting layer, an inorganic light emitting diode including an inorganic semiconductor, or a micro light emitting diode.

[0097] The encapsulation layer TFEL may cover the top and side surfaces of the light emitting element layer EML and may protect the light emitting element layer EML. The encapsulation layer TFEL may include at least one inorganic layer and at least one organic layer for encapsulating the light emitting element layer EML.

[0098] The touch sensing layer TSU may be provided on the encapsulation layer TFEL. The touch sensing layer TSU may include a plurality of touch electrodes for capacitively sensing a user's touch and touch lines connecting the plurality of touch electrodes to the touch driver 400. For example, the touch sensing layer TSU may sense a user's touch using a mutual capacitance method or a self-capacitance method.

[0099] In an embodiment, the touch sensing layer TSU may be provided on a separate substrate provided on the display layer DU. In this case, the substrate supporting the touch sensing layer TSU may be a base member encapsulating the display layer DU.

[0100] The plurality of touch electrodes of the touch sensing layer TSU may be disposed in a touch sensor area overlapping the display area DA, and the touch wires of the touch sensing layer TSU may be disposed in a touch peripheral area overlapping the non-display area NDA.

[0101] A color filter layer (CFL) may be provided on the touch sensing layer (TSU). The color filter layer (CFL) may include a plurality of color filters corresponding to the plurality of emission regions. Each of the plurality of color filters may selectively transmit light of a specific wavelength and may block or absorb light of a wavelength different from the specific wavelength. The color filter layer (CFL) may absorb a portion of light from outside the display device 10 (e.g., ambient light) to reduce reflected light caused by the external light. Thus, the color filter layer (CFL) may prevent color distortion caused by reflection of external light.

[0102] Since the color filter layer CFL is directly disposed on the touch sensing layer TSU, the display device 10 may not require a separate substrate for the color filter layer CFL. Therefore, the thickness of the display device 10 may be relatively small.

[0103] Figure 6 is a plan view showing a display layer of a display device according to an embodiment.

[0104] refer to Figure 6 , the display layer DU may include a display area DA and a non-display area NDA.

[0105] The display area DA may be provided on the display panel 100 (see Figure 5 ) at the center. A plurality of pixels PX, a plurality of gate lines GL, a plurality of data lines DL, and a plurality of power lines VL may be disposed in the display area DA. Each of the plurality of pixels PX may be defined as a minimum unit for emitting light.

[0106] The plurality of gate lines GL may supply gate signals received from the gate driver 210 to the plurality of pixels PX. The plurality of gate lines GL may extend in a first direction DR1 and may be spaced apart from each other in a second direction DR2 intersecting the first direction DR1.

[0107] The plurality of data lines DL may supply data voltages received from the display driver 200 to the plurality of pixels PX. The plurality of data lines DL may extend in the second direction DR2 and may be spaced apart from each other in the first direction DR1.

[0108] The plurality of power lines VL may supply a power voltage received from the display driver 200 to the plurality of pixels PX. Here, the power voltage may be a driving voltage, an initialization voltage, a reference voltage, and / or a low potential voltage. The plurality of power lines VL may extend in the second direction DR2 and may be spaced apart from each other in the first direction DR1.

[0109] The non-display area NDA may at least partially surround the display area DA. A gate driver 210, fan-out lines FOL, and gate control lines GCL may be disposed in the non-display area NDA. The gate driver 210 may generate a plurality of gate signals based on a gate control signal and may sequentially supply the plurality of gate signals to a plurality of gate lines GL according to a set order.

[0110] The fan-out line FOL may extend from the display driver 200 to the display area DA. The fan-out line FOL may supply a data voltage received from the display driver 200 to the plurality of data lines DL.

[0111] The gate control line GCL may extend from the display driver 200 to the gate driver 210. The gate control line GCL may supply a gate control signal received from the display driver 200 to the gate driver 210.

[0112] The sub-area SBA may include the display driver 200 , the pad area PA, and first and second touch pad areas TPA1 and TPA2 .

[0113] The display driver 200 can output signals and voltages for driving the display panel 100 to the fan-out lines FOL. The display driver 200 can supply data voltages to the data lines DL through the fan-out lines FOL. The data voltages can be supplied to the plurality of pixels PX and the brightness of the plurality of pixels PX can be controlled. The display driver 200 can supply gate control signals to the gate driver 210 through the gate control lines GCL.

[0114] The pad area PA, the first touch pad area TPA1, and the second touch pad area TPA2 may be disposed at the edge of the sub-area SBA. The pad area PA, the first touch pad area TPA1, and the second touch pad area TPA2 may be electrically connected to the circuit board 300 (see FIG. 1 ) by using a low-resistance, high-reliability material such as a self-assembled anisotropic conductive paste (SAP) or an anisotropic conductive film. Figure 4 ).

[0115] The pad area PA may include a plurality of display pad portions DP. The plurality of display pad portions DP may be connected to a graphics system through the circuit board 300. The plurality of display pad portions DP may be connected to the circuit board 300 to receive digital video data and may supply the digital video data to the display driver 200.

[0116] Figure 7 is a plan view showing a touch sensing layer of a display device according to an embodiment.

[0117] refer to Figure 7 The touch sensing layer TSU may include a touch sensor area TSA for sensing a user's touch and a touch peripheral area TOA disposed around the touch sensor area TSA. The touch sensor area TSA may be disposed on the display device 10 (see FIG. Figure 4 ) display area DA (see Figure 4 ), and the touch peripheral area TOA may be set in the non-display area NDA (see Figure 4 )middle.

[0118] The touch sensor area TSA may include multiple touch electrodes SEN and multiple dummy electrodes DME. The multiple touch electrodes SEN may form mutual capacitance or self-capacitance to sense the touch of an object or person. The multiple touch electrodes SEN may include multiple drive electrodes TE, multiple sense electrodes RE, and multiple bridge electrodes CE.

[0119] The plurality of driving electrodes TE may be arranged in the first direction DR1 and the second direction DR2. The plurality of driving electrodes TE may be spaced apart from each other in the first direction DR1 and the second direction DR2. Adjacent driving electrodes TE in the second direction DR2 may be electrically connected by a bridge electrode CE.

[0120] A plurality of driving electrodes TE may be connected to the first touch pad unit TP1 through a driving line TL. The driving line TL may include a lower driving line TLa and an upper driving line TLb. For example, the driving electrode TE disposed on the lower side of the touch sensor area TSA may be connected to the first touch pad unit TP1 through the lower driving line TLa, and the driving electrode TE disposed on the upper side of the touch sensor area TSA may be connected to the first touch pad unit TP1 through the upper driving line TLb. The lower driving line TLa may extend to the first touch pad unit TP1 through the lower side of the touch peripheral area TOA. The upper driving line TLb may extend to the first touch pad unit TP1 through the upper side, left side, and lower side of the touch peripheral area TOA. The first touch pad unit TP1 may be connected to the touch pad unit TP1 through the circuit board 300 (see Figure 4 ) is connected to the touch driver 400 (see Figure 4 ).

[0121] The bridge electrode CE may be bent at least once. For example, the bridge electrode CE may have an angle bracket shape ("<" or ">"), but the planar shape of the bridge electrode CE is not necessarily limited thereto. Drive electrodes TE adjacent to each other in the second direction DR2 may be connected by a plurality of bridge electrodes CE, and even if any one of the plurality of bridge electrodes CE is disconnected, the drive electrode TE may be stably connected by the remaining bridge electrodes CE. Drive electrodes TE adjacent to each other may be connected by two bridge electrodes CE, but the number of bridge electrodes CE is not necessarily limited thereto.

[0122] The bridge electrode CE can be provided on a different layer than the plurality of drive electrodes TE and the plurality of sensing electrodes RE. Sensing electrodes RE adjacent to each other in the first direction DR1 can be electrically connected via a connection portion provided on the same layer as the plurality of drive electrodes TE or the plurality of sensing electrodes RE, and drive electrodes TE adjacent to each other in the second direction DR2 can be electrically connected via the bridge electrode CE provided on a different layer than the plurality of drive electrodes TE or the plurality of sensing electrodes RE. Therefore, although the bridge electrode CE overlaps with the plurality of sensing electrodes RE in the third direction DR3, the plurality of drive electrodes TE and the plurality of sensing electrodes RE can be insulated from each other. Mutual capacitance can be formed between the drive electrodes TE and the sensing electrodes RE.

[0123] The plurality of sensing electrodes RE may extend in the first direction DR1 and may be spaced apart from each other in the second direction DR2. The plurality of sensing electrodes RE may be arranged in the first direction DR1 and the second direction DR2, and adjacent sensing electrodes RE in the first direction DR1 may be electrically connected through a connection portion.

[0124] The plurality of sensing electrodes RE may be connected to the second touch pad unit TP2 via sensing lines RL. For example, the sensing electrode RE disposed on the right side of the touch sensor area TSA may be connected to the second touch pad unit TP2 via sensing lines RL. The sensing lines RL may extend to the second touch pad unit TP2 via the right side and lower side of the touch peripheral area TOA. The second touch pad unit TP2 may be connected to the touch driver 400 via the circuit board 300.

[0125] Each of the plurality of dummy electrodes DME may be at least partially surrounded by the drive electrode TE or the sensing electrode RE. Each of the plurality of dummy electrodes DME may be insulated by being spaced apart from the drive electrode TE or the sensing electrode RE. Therefore, the dummy electrode DME may be electrically floating.

[0126] The pad area PA, the first touch pad area TPA1, and the second touch pad area TPA2 may be disposed at the edge of the sub-area SBA. The pad area PA, the first touch pad area TPA1, and the second touch pad area TPA2 may be electrically connected to the circuit board 300 using a low-resistance, high-reliability material such as a self-assembled anisotropic conductive paste (SAP) or an anisotropic conductive film.

[0127] The first touch pad area TPA1 may be provided on one side of the pad area PA and may include a plurality of first touch pad units TP1. The plurality of first touch pad units TP1 may be electrically connected to a touch driver 400 provided on the circuit board 300. The plurality of first touch pad units TP1 may supply touch drive signals to the plurality of drive electrodes TE through the plurality of drive lines TL.

[0128] The second touch pad area TPA2 may be provided on the other side of the pad area PA and may include a plurality of second touch pad units TP2. The plurality of second touch pad units TP2 may be electrically connected to a touch driver 400 provided on the circuit board 300. The touch driver 400 may receive touch sensing signals through a plurality of sensing lines RL connected to the plurality of second touch pad units TP2 and may sense changes in mutual capacitance between the drive electrode TE and the sensing electrode RE.

[0129] In an embodiment, the touch driver 400 may supply a touch drive signal to each of the plurality of drive electrodes TE and the plurality of sensing electrodes RE, and may receive a touch sensing signal from each of the plurality of drive electrodes TE and the plurality of sensing electrodes RE. The touch driver 400 may sense the amount of change in charge of each of the plurality of drive electrodes TE and the plurality of sensing electrodes RE based on the touch sensing signal.

[0130] Figure 8is a plan view of arrangement of emission regions in a display region of a display device according to an embodiment. Figure 9 is shown in the settings Figure 8 A plan view of the arrangement of color filters in the display area.

[0131] refer to Figure 8 and Figure 9 , display device 10 (see Figure 4 ) may include a display area DA (see Figure 4 ) and an emission area EA1, EA2, EA3 and EA4 and a non-emission area NEA are provided in each of the pixels PX1, PX2 and PX3. The plurality of pixels PX1, PX2 and PX3 may be arranged in a fourth direction DR4 and a fifth direction DR5 between the first direction DR1 and the second direction DR2. The first pixel PX1, the second pixel PX2 and the third pixel PX3 may be alternately arranged along the fourth direction DR4 and the fifth direction DR5. For example, the second pixel PX2 and the third pixel PX3 may be arranged in the fourth direction DR4 and the fifth direction DR5 relative to the first pixel PX1. The plurality of pixels PX1, PX2 and PX3 may be arranged Type, among which is an arrangement of light emitting areas for a display panel manufactured by SAMSUNG (e.g., diamonds in the display area DA). However, the arrangement or disposition of the pixels PX1, PX2, and PX3 is not necessarily limited to Figure 8 and Figure 9 In some embodiments, the plurality of pixels PX1 , PX2 , and PX3 may also be arranged in a linear pattern or an island pattern.

[0132] Each of the emission areas EA1, EA2, EA3, and EA4 of the pixels PX1, PX2, and PX3 may include a first emission area EA1, a second emission area EA2, a third emission area EA3, and a fourth emission area EA4 that emit light of different colors. Unlike the first emission area EA1 and the second emission area EA2, the third emission area EA3 and the fourth emission area EA4 may emit light of the same color. The first emission area EA1, the second emission area EA2, the third emission area EA3, and the fourth emission area EA4 may each emit red light, blue light, or green light, and the color of the light emitted from each of the emission areas EA1, EA2, EA3, and EA4 may be determined based on the settings to be made later. Figure 10The light emitting element ED in the light emitting element layer EML described in the embodiment is different. In the embodiment, the first emission area EA1 can emit a first light of red color, the second emission area EA2 can emit a second light of blue color, and the third emission area EA3 and the fourth emission area EA4 can emit a third light of green color. However, the present disclosure is not necessarily limited to this.

[0133] Multiple emission areas EA1, EA2, EA3 and EA4 can be set to Type (e.g., diamond type). For example, in each of pixels PX1, PX2, and PX3, the first emission area EA1 and the second emission area EA2 may be spaced apart from each other in the first direction DR1, and the third emission area EA3 and the fourth emission area EA4 may be spaced apart from each other in the second direction DR2. The first emission area EA1 may be spaced apart from the third emission area EA3 in the fifth direction DR5, and may be spaced apart from the fourth emission area EA4 in the fourth direction DR4. The second emission area EA2 may be spaced apart from the third emission area EA3 in the fourth direction DR4, and may be spaced apart from the fourth emission area EA4 in the fifth direction DR5.

[0134] In the plurality of pixels PX1, PX2, and PX3, the plurality of first emission areas EA1, the second emission areas EA2, the third emission areas EA3, and the fourth emission areas EA4 may be alternately arranged in the fourth direction DR4 or the fifth direction DR5. For example, the plurality of emission areas EA1, EA2, EA3, and EA4 may be arranged in rows R1, R2, R3, and R4 arranged along the fourth direction DR4 and in columns C1, C2, C3, and C4 arranged along the fifth direction DR5. In the first row R1 and the third row R3, the second emission area EA2 and the third emission area EA3 may be alternately arranged along the fourth direction DR4. In the second row R2 and the fourth row R4, the first emission area EA1 and the fourth emission area EA4 may be alternately arranged along the fourth direction DR4. In the first column C1 and the third column C3, the second emission area EA2 and the fourth emission area EA4 may be alternately arranged along the fifth direction DR5. In the second column C2 and the fourth column C4 , the first emission areas EA1 and the third emission areas EA3 may be alternately disposed along the fifth direction DR5 .

[0135] Alternatively, the plurality of emission areas EA1, EA2, EA3, and EA4 may be arranged along the first direction DR1 or the second direction DR2. The first emission area EA1 and the second emission area EA2 may be alternately disposed along the first direction DR1 and the second direction DR2. The third emission area EA3 and the fourth emission area EA4 may be alternately disposed along the first direction DR1 and the second direction DR2.

[0136] Each of the first emission area EA1, the second emission area EA2, the third emission area EA3, and the fourth emission area EA4 may be formed of a pixel defining layer PDL (see FIG. 1 ) formed on a light emitting element layer EML to be described later. Figure 10 ) is defined by a plurality of openings OPE1, OPE2, OPE3, and OPE4 in the pixel defining layer PDL. For example, a first emission area EA1 may be defined by a first opening OPE1 of the pixel defining layer PDL, a second emission area EA2 may be defined by a second opening OPE2 of the pixel defining layer PDL, a third emission area EA3 may be defined by a third opening OPE3 of the pixel defining layer PDL, and a fourth emission area EA4 may be defined by a fourth opening OPE4 of the pixel defining layer PDL.

[0137] In an embodiment, the areas or sizes of the first emission area EA1, the second emission area EA2, the third emission area EA3, and the fourth emission area EA4 may be different from each other. Figure 8 In an embodiment of the present invention, the area of ​​the second emission area EA2 may be larger than the areas of the first emission area EA1, the third emission area EA3, and the fourth emission area EA4, and the area of ​​the first emission area EA1 may be larger than the areas of the third emission area EA3 and the fourth emission area EA4. The areas of the emission areas EA1, EA2, EA3, and EA4 may vary according to the sizes of the openings OPE1, OPE2, OPE3, and OPE4 formed in the pixel defining layer PDL. The intensity of light emitted from the corresponding emission areas EA1, EA2, EA3, and EA4 may vary according to the areas of the emission areas EA1, EA2, EA3, and EA4, and the areas of the emission areas EA1, EA2, EA3, and EA4 may be adjusted to control the intensity of light emitted in the display device 10 or the electronic device 1 (see Figure 1 ) in the image. Figure 8 In the embodiment shown, the second emission area EA2 having the largest area is shown, but the present invention is not necessarily limited to this. The areas of the emission areas EA1, EA2, EA3, and EA4 can be freely adjusted according to the color of the image required by the display device 10 and the electronic device 1. In addition, the areas of the emission areas EA1, EA2, EA3, and EA4 may be related to the light efficiency and lifespan of the light-emitting element ED, and may have a trade-off relationship with the reflection of external light. The areas of the emission areas EA1, EA2, EA3, and EA4 can be adjusted taking into account the above factors.

[0138] In addition, the plurality of openings OPE1, OPE2, OPE3 and OPE4 and the plurality of light output portions OPT1, OPT2, OPT3 and OPT4 are exemplarily shown and described as circular shapes. However, the present disclosure is not necessarily limited thereto, and various shapes such as an elliptical shape or a polygonal structure with curved edges may be used herein.

[0139] Each of the plurality of pixels PX1, PX2, and PX3 may include a first emission area EA1, a second emission area EA2, a third emission area EA3, and a fourth emission area EA4, which are adjacent to each other and represent a white grayscale. However, the present disclosure is not necessarily limited thereto, and the combination of the emission areas EA1, EA2, EA3, and EA4 constituting one pixel group may be variously modified depending on the arrangement of the emission areas EA1, EA2, EA3, and EA4, the color of light emitted from the emission areas EA1, EA2, EA3, and EA4, and the like.

[0140] The non-emission area NEA may be the remaining area except for the emission areas EA1, EA2, EA3, and EA4. The non-emission area NEA may be disposed between the emission areas EA1, EA2, EA3, and EA4. The non-emission area NEA may overlap with the pixel defining layer PDL. For example, the non-emission area NEA may correspond to an area of ​​the pixel defining layer PDL.

[0141] The display device 10 may include a plurality of color filters CF1 and CF2 and a color pattern CP disposed on the emission areas EA1, EA2, EA3, and EA4. The plurality of color filters CF1 and CF2 and the color pattern CP may correspond to the emission areas EA1, EA2, EA3, and EA4. For example, the color filters CF1 and CF2 and the color pattern CP may overlap with the emission areas EA1, EA2, EA3, and EA4, the openings OPE1, OPE2, OPE3, and OPE4, or the plurality of light output portions OPT1, OPT2, OPT3, and OPT4. The plurality of light output portions OPT1, OPT2, OPT3, and OPT4 may overlap with the openings OPE1, OPE2, OPE3, and OPE4 and may form a light exit area from which light emitted from the emission areas EA1, EA2, EA3, and EA4 is emitted. Each of the color filters CF1 and CF2 and the color pattern CP may have a larger area than the light output portions OPT1, OPT2, OPT3 and OPT4 and the openings OPE1, OPE2, OPE3 and OPE4, and each of the color filters CF1 and CF2 and the color pattern CP may completely cover the light exit area formed by the light output portions OPT1, OPT2, OPT3 and OPT4.

[0142] The color filters CF1 and CF2 and the color pattern CP may correspond to different emission areas EA1, EA2, EA3, and EA4. The color filters CF1 and CF2 may include a first color filter CF1 and a second color filter CF2. The color filters CF1 and CF2 and the color pattern CP may include a colorant (such as a dye or pigment) that absorbs light in a wavelength band other than a specific wavelength band, and may correspond to the color of light emitted from the emission areas EA1, EA2, EA3, and EA4.

[0143] For example, the first color filter CF1 may be a red color filter that overlaps with the first emission area EA1 and transmits only red first light. The second color filter CF2 may be a blue color filter that overlaps with the second emission area EA2 and transmits only blue second light. The color pattern CP may be a green color filter that overlaps with the third emission area EA3 and the fourth emission area EA4 and transmits only green third light.

[0144] The first color filter CF1 may overlap with the first emission area EA1 but not with the second emission area EA2, the third emission area EA3, and the fourth emission area EA4. The second color filter CF2 may overlap with the second emission area EA2 but not with the first emission area EA1, the third emission area EA3, and the fourth emission area EA4. The color pattern CP may overlap with the third emission area EA3 and the fourth emission area EA4 but not with the first emission area EA1 and the second emission area EA2. The color filters CF1 and CF2 and the color pattern CP may overlap with the non-emission area NEA.

[0145] According to an embodiment, a plurality of color filters CF1 and CF2 and color patterns CP may partially overlap other adjacent color filters CF1 and CF2 and color patterns CP. Figure 9 The arrangement of the color filters CF1 and CF2 and the color pattern CP as viewed from above is shown. The color filters CF1 and CF2 and the color pattern CP overlapping each other may overlap each other in the non-emission area NEA.

[0146] In the display device 10, the color filters CF1 and CF2 and the color pattern CP overlap with each other, so that the intensity of the reflected light from the external light can be reduced. In addition, the color of the reflected light from the external light can be controlled by adjusting the arrangement, shape, and area of ​​the color filters CF1 and CF2 and the color pattern CP in a plan view.

[0147] The touch electrode SEN may be disposed between the emission areas EA1, EA2, EA3, and EA4. The touch electrode SEN may include a driving electrode TE (see FIG. Figure 10 ) and touch connection electrode TC (see Figure 10). The touch electrode SEN may also include a sensing electrode. The touch electrode SEN may extend in the fourth direction DR4 and the fifth direction DR5 and may be spaced apart from the emission areas EA1, EA2, EA3, and EA4 without overlapping them. The touch electrode SEN may be aligned with the pixel defining layer PDL (see FIG. 1 ) including the openings OPE1, OPE2, OPE3, and OPE4. Figure 10 ) overlap. In addition, the touch electrode SEN may overlap with the first color filter CF1, the second color filter CF2 and the color pattern CP. Figure 8 The touch electrode SEN is briefly shown in FIG. 1 , but the touch electrode SEN may be Figure 7 driving electrodes TE or sensing electrodes RE.

[0148] The diameters of the openings OPE1, OPE2, OPE3, and OPE4 forming the emission areas EA1, EA2, EA3, and EA4 may be smaller than the diameters of the light output portions OPT1, OPT2, OPT3, and OPT4. The light output portions OPT1, OPT2, OPT3, and OPT4 may be defined between the regions where the first color filter CF1, the second color filter CF2, and the color pattern CP overlap with each other. An opening spacing between the openings OPE1, OPE2, OPE3, and OPE4 and the light output portions OPT1, OPT2, OPT3, and OPT4 may be defined for each of the emission areas EA1, EA2, EA3, and EA4. The opening spacing may also be defined as the difference in diameter between the openings OPE1, OPE2, OPE3, and OPE4 of the pixel defining layer PDL and the light output portions OPT1, OPT2, OPT3, and OPT4. In the display device 10, the same emission areas EA1, EA2, EA3, and EA4 belonging to different pixels PX1, PX2, and PX3 may have different opening intervals between the openings OPE1, OPE2, OPE3, and OPE4 and the light output portions OPT1, OPT2, OPT3, and OPT4. In the first pixel PX1, the second pixel PX2, and the third pixel PX3, the emission areas EA1, EA2, EA3, and EA4 may emit light of the same color, but in each of the emission areas EA1, EA2, EA3, and EA4, the opening intervals between the openings OPE1, OPE2, OPE3, and OPE4 and the light output portions OPT1, OPT2, OPT3, and OPT4 may be different.

[0149] For example, each of the first pixel PX1, the second pixel PX2, and the third pixel PX3 may include a first emission area EA1 that emits red light, but in each of the pixels PX1, PX2, and PX3, the multiple opening intervals of the first emission area EA1 may be different from each other. Similarly, in the first pixel PX1, the second pixel PX2, and the third pixel PX3, the second emission area EA2, the third emission area EA3, and the fourth emission area EA4 may also emit light of the same color, but may have different opening intervals from each other. In addition, also in each of the pixels PX1, PX2, and PX3, the first emission area EA1, the second emission area EA2, the third emission area EA3, and the fourth emission area EA4 may have different opening intervals from each other.

[0150] Figure 10 It is along Figure 8 A cross-sectional view taken along line XX'. Figure 11 yes Figure 10 An enlarged cross-sectional view of a portion of the area. Figure 12 is a cross-sectional view schematically illustrating an overcoat layer of a display device according to an embodiment. Figure 13 yes Figure 10 An enlarged cross-sectional view of a portion of the area. Figure 14 is a plan view showing the second emission region and the second opening.

[0151] Figure 10 A cross section crossing the first emission area EA1 , the third emission area EA3 , and the second emission area EA2 is shown.

[0152] Apart from Figure 8 and Figure 9 In addition, reference will be made to Figures 10 to 14 To describe the display device 10 (see Figure 4 ) cross-sectional structure.

[0153] The display panel 100 (see FIG. Figure 5 ) may include a display layer DU, a touch sensing layer TSU, a color filter layer CFL, and an overcoat layer OC. The display layer DU may include a substrate SUB, a thin film transistor layer TFTL, a light emitting element layer EML, and an encapsulation layer TFEL. The display panel 100 may include a reflection reducing layer RPL on the encapsulation layer TFEL. The reflection reducing layer RPL may include the touch sensing layer TSU, the color filter layer CFL, and the overcoat layer OC.

[0154] The substrate SUB may be a base substrate or a base member. The substrate SUB may be a flexible substrate that can be bent, folded, or curled to a significant degree without breaking or otherwise being damaged. For example, the substrate SUB may include a polymer resin such as polyimide (PI), but is not necessarily limited thereto. For example, the substrate SUB may include glass or metal.

[0155] The thin film transistor layer TFTL may include a first buffer layer BF1, a lower metal layer BML, a second buffer layer BF2, a thin film transistor TFT, a gate insulating layer GI, a first interlayer insulating layer ILD1, a capacitor electrode CPE, a second interlayer insulating layer ILD2, a first connection electrode CNE1, a first passivation layer PAS1, a second connection electrode CNE2, and a second passivation layer PAS2.

[0156] The first buffer layer BF1 may be disposed on the substrate SUB. The first buffer layer BF1 may include an inorganic layer capable of preventing air or moisture from penetrating. For example, the first buffer layer BF1 may include a plurality of inorganic layers alternately stacked.

[0157] The lower metal layer BML may be disposed on the first buffer layer BF1. For example, the lower metal layer BML may be formed as a single layer or multiple layers made of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), tantalum (Ta), and / or copper (Cu), or alloys thereof.

[0158] The second buffer layer BF2 may cover the first buffer layer BF1 and the lower metal layer BML. The second buffer layer BF2 may include an inorganic layer capable of preventing air or moisture from penetrating. For example, the second buffer layer BF2 may include a plurality of inorganic layers alternately stacked.

[0159] A thin film transistor (TFT) may be disposed on the second buffer layer (BF2) and may constitute a pixel circuit for each of the plurality of pixels. For example, the thin film transistor (TFT) may be a switching transistor or a driving transistor of the pixel circuit. The thin film transistor (TFT) may include a semiconductor layer (ACT), a source electrode (SE), a drain electrode (DE), and a gate electrode (GE).

[0160] The semiconductor layer ACT may be disposed on the second buffer layer BF2. The semiconductor layer ACT may overlap the lower metal layer BML and the gate electrode GE in the thickness direction and may be insulated from the gate electrode GE by the gate insulating layer GI. In a portion of the semiconductor layer ACT, the material in the semiconductor layer ACT may be made into a conductor to form the source electrode SE and the drain electrode DE.

[0161] The gate electrode GE may be disposed on the gate insulating layer GI. The gate electrode GE may overlap with the semiconductor layer ACT with the gate insulating layer GI interposed therebetween.

[0162] The gate insulating layer GI may be disposed on the semiconductor layer ACT. For example, the gate insulating layer GI may cover the semiconductor layer ACT and the second buffer layer BF2 to insulate the gate electrode GE from the semiconductor layer ACT. The gate insulating layer GI may include a contact hole through which the first connection electrode CNE1 passes.

[0163] The first interlayer insulating layer ILD1 may cover the gate electrode GE and the gate insulating layer GI. The first interlayer insulating layer ILD1 may include a contact hole through which the first connection electrode CNE1 passes. The contact hole of the first interlayer insulating layer ILD1 may be connected to the contact hole of the gate insulating layer GI and the contact hole of the second interlayer insulating layer ILD2.

[0164] The capacitor electrode CPE may be disposed on the first interlayer insulating layer ILD1 , overlap the gate electrode GE in the thickness direction, and form a capacitor with the gate electrode GE.

[0165] The second interlayer insulating layer ILD2 may cover the capacitor electrode CPE and the first interlayer insulating layer ILD1. The second interlayer insulating layer ILD2 may include a contact hole through which the first connection electrode CNE1 passes. The contact hole of the second interlayer insulating layer ILD2 may be connected to the contact hole of the first interlayer insulating layer ILD1 and the contact hole of the gate insulating layer GI.

[0166] The first connection electrode CNE1 may be disposed on the second interlayer insulating layer ILD2. The first connection electrode CNE1 may electrically connect the drain electrode DE of the thin film transistor TFT to the second connection electrode CNE2. The first connection electrode CNE1 may be inserted into a contact hole provided in the second interlayer insulating layer ILD2, the first interlayer insulating layer ILD1, and the gate insulating layer GI to contact the drain electrode DE of the thin film transistor TFT.

[0167] The first passivation layer PAS1 may cover the first connection electrode CNE1 and the second interlayer insulating layer ILD2. The first passivation layer PAS1 may protect the thin film transistor TFT. The first passivation layer PAS1 may include a contact hole through which the second connection electrode CNE2 passes.

[0168] The second connection electrode CNE2 may be disposed on the first passivation layer PAS1. The second connection electrode CNE2 may electrically connect the first connection electrode CNE1 to the pixel electrode AE ​​of the light emitting element ED. The second connection electrode CNE2 may be inserted into a contact hole formed in the first passivation layer PAS1 to contact the first connection electrode CNE1.

[0169] The second passivation layer PAS2 may cover the second connection electrode CNE2 and the first passivation layer PAS 1. The second passivation layer PAS2 may include a contact hole through which the pixel electrode AE ​​of the light emitting element ED passes.

[0170] The light emitting element layer EML may be disposed on the thin film transistor layer TFTL. The light emitting element layer EML may include a light emitting element ED and a pixel defining layer PDL. The light emitting element ED may include a pixel electrode AE, a light emitting layer EL, and a common electrode CO.

[0171] The pixel electrode AE ​​may be disposed on the second passivation layer PAS2. The pixel electrode AE ​​may overlap any one of the openings OPE1, OPE2, OPE3, and OPE4 of the pixel defining layer PDL. The pixel electrode AE ​​may be electrically connected to the drain electrode DE of the thin film transistor TFT through the first connection electrode CNE1 and the second connection electrode CNE2.

[0172] The light-emitting layer EL may be provided on the pixel electrode AE. For example, the light-emitting layer EL may be an organic light-emitting layer made of an organic material, but is not necessarily limited thereto. When an organic light-emitting layer is used as the light-emitting layer EL, the thin film transistor TFT applies a predetermined voltage to the pixel electrode AE ​​of the light-emitting element ED. When the common electrode CO of the light-emitting element ED receives a common voltage or a cathode voltage, holes and electrons may move to the light-emitting layer EL through the hole transport layer and the electron transport layer and recombine to generate light to be emitted by the light-emitting layer EL.

[0173] The common electrode CO may be disposed on the light-emitting layer EL. For example, the common electrode CO may be formed in the form of an electrode common to all pixels rather than an electrode specific to each of the plurality of pixels. The common electrode CO may be disposed on the light-emitting layer EL in the first emission area EA1, the second emission area EA2, the third emission area EA3, and the fourth emission area EA4, and may be disposed on the pixel defining layer PDL in areas other than the first emission area EA1, the second emission area EA2, the third emission area EA3, and the fourth emission area EA4.

[0174] The common electrode CO may receive a common voltage or a low potential voltage. When the pixel electrode AE ​​receives a voltage corresponding to the data voltage and the common electrode CO receives a low potential voltage, a potential difference is formed between the pixel electrode AE ​​and the common electrode CO, so that the light emitting layer EL may emit light.

[0175] The pixel defining layer PDL may include a plurality of openings OPE1, OPE2, OPE3, and OPE4, and may be disposed on the second passivation layer PAS2 and a portion of the pixel electrode AE. The pixel defining layer PDL may include a first opening OPE1, a second opening OPE2, a third opening OPE3, and a fourth opening OPE4, and each of the openings OPE1, OPE2, OPE3, and OPE4 may expose a portion of the pixel electrode AE. As described above, each of the openings OPE1, OPE2, OPE3, and OPE4 of the pixel defining layer PDL may define a first emission area EA1, a second emission area EA2, a third emission area EA3, and a fourth emission area EA4, and the areas or sizes of the openings OPE1, OPE2, OPE3, and OPE4 may be different. The pixel defining layer PDL may separate and insulate the pixel electrode AE ​​of each of the plurality of light emitting elements ED.

[0176] The pixel defining layer (PDL) may include a light absorbing material to prevent light reflection. For example, the pixel defining layer (PDL) may include a polyimide (PI)-based binder resin and a mixture of red, green, and blue pigments. Alternatively, the pixel defining layer (PDL) may include a cardo-based binder resin and a mixture of a lactam black pigment and a blue pigment. Alternatively, the pixel defining layer (PDL) may include carbon black.

[0177] The encapsulation layer TFEL may be disposed on the common electrode CO to cover the plurality of light-emitting elements ED. The encapsulation layer TFEL may include at least one inorganic layer to prevent oxygen or moisture from penetrating into the light-emitting element layer EML. The encapsulation layer TFEL may include at least one organic layer to protect the light-emitting element layer EML from foreign matter such as dust.

[0178] In an embodiment, the encapsulation layer TFEL may include a first encapsulation layer TFE1, a second encapsulation layer TFE2, and a third encapsulation layer TFE3. The first encapsulation layer TFE1 and the third encapsulation layer TFE3 may be inorganic encapsulation layers, and the second encapsulation layer TFE2 disposed between the first encapsulation layer TFE1 and the third encapsulation layer TFE3 may be an organic encapsulation layer.

[0179] Each of the first encapsulation layer TFE1 and the third encapsulation layer TFE3 may include one or more inorganic insulating materials, such as aluminum oxide, titanium oxide, tantalum oxide, hafnium oxide, zinc oxide, silicon oxide, silicon nitride, and / or silicon oxynitride.

[0180] The second encapsulation layer TFE2 may include a polymer material. Examples of polymer materials include acrylic resin, epoxy resin, polyimide, and polyethylene. For example, the second encapsulation layer TFE2 may include an acrylic resin such as polymethyl methacrylate or polyacrylic acid. The second encapsulation layer TFE2 may be formed by curing a monomer or applying a polymer.

[0181] The touch sensing layer TSU may be disposed on the encapsulation layer TFEL. The touch sensing layer TSU may include a color pattern CP, a touch electrode SEN, and a passivation layer SIL.

[0182] The color pattern CP may be disposed on the encapsulation layer TFEL. The color pattern CP may overlap with the third emission area EA3, the fourth emission area EA4, the third opening OPE3, and the non-emission area NEA. The color pattern CP may not overlap with the first emission area EA1 and the second emission area EA2.

[0183] The color pattern CP can selectively transmit light of a specific wavelength and block or absorb light of different wavelengths. The color pattern CP may include a colorant dispersed in a polymer resin. The polymer resin may be a material that is transparent to visible light and has a low refractive index. The polymer resin may have a refractive index of 1.4 to 1.6. For example, the polymer resin may include an acrylic resin, an epoxy resin, a phenolic resin, a polyimide resin, and / or a polyamide resin. The color pattern CP may include a colorant (such as a dye or pigment) that absorbs light of a wavelength band other than the specific wavelength band. The color pattern CP may be a green color filter that transmits only the third light of the green color and may absorb the first light of the red color and the second light of the blue color. The color pattern CP may be formed by applying a solution in which a polymer resin and a colorant are mixed and curing it.

[0184] In an embodiment, the color pattern CP may further include hollow particles. The hollow particles may be used to reduce the refractive index of the color pattern CP. For example, the hollow particles may include silicon dioxide (SiO2), magnesium fluoride (MgF2), and / or iron oxide (Fe3O4). The hollow particles included in the color pattern CP may be included in a weight ratio of 1% to 50% relative to the polymer resin, thereby reducing the refractive index of the color pattern CP.

[0185] The side surface of the color pattern CP adjacent to each of the emission areas EA1, EA2, EA3, and EA4 may be an inclined surface. The inclination angle θ1 of the inclined surface may be approximately 60 to 85 degrees, and for example, 70 to 75 degrees. A portion of the light emitted from the light-emitting element ED of each emission area EA1, EA2, EA3, and EA4 may be emitted directly toward the upper portion where the overcoat layer OC is provided, while another portion of the light may travel toward the inclined surface of the color pattern CP. In this case, the inclined surface of the color pattern CP serves as a total reflection surface, so that light incident on the inclined surface of the color pattern CP can be totally reflected and emitted upward.

[0186] The color pattern CP may have a lower refractive index than the first color filter CF1 and the second color filter CF2. The refractive index of the color pattern CP may be 0.05 or more lower than the refractive index of the first color filter CF1 and the refractive index of the second color filter CF2. A portion of the light refracted at the inclined surface of the color pattern CP may be refracted upward at the boundary of the first color filter CF1 having a relatively high refractive index, thereby improving light emission efficiency.

[0187] In the touch electrode SEN, the touch connection electrode TC may be disposed under the color pattern CP, and the driving electrode TE may be disposed on the color pattern CP. Figure 7 ) may be disposed on the color pattern CP. The touch connection electrode TC may be a bridge electrode. Each of the plurality of touch electrodes SEN may not overlap with the first emission area EA1, the second emission area EA2, the third emission area EA3, and the fourth emission area EA4. The color pattern CP may serve as an insulating layer to insulate the touch electrodes SEN. For example, the color pattern CP may insulate the drive electrode TE from the sensing electrode RE.

[0188] Each of the multiple touch electrodes SEN can be formed of a single layer containing molybdenum (Mo), titanium (Ti), copper (Cu), tantalum (Ta), aluminum (Al) or indium tin oxide (ITO), or can have a stacked structure of aluminum and titanium (Ti / Al / Ti), a stacked structure of aluminum and ITO (ITO / Al / ITO), an Ag-Pd-Cu (APC) alloy, or a stacked structure of an APC alloy and ITO (ITO / APC / ITO).

[0189] The passivation layer SIL can insulate the driving electrode TE and can be used to protect the color pattern CP from the influence of subsequent processes. The passivation layer SIL can cover the driving electrode TE and the color pattern CP. The passivation layer SIL can directly contact the third encapsulation layer TFE3 of the encapsulation layer TFEL in each of the emission areas EA1, EA2, EA3 and EA4.

[0190] The color filter layer CFL may be disposed on the touch sensing layer TSU. The color filter layer CFL may include a first color filter CF1 and a second color filter CF2.

[0191] The first color filter CF1 may be disposed on the passivation layer SIL. The first color filter CF1 may overlap the first emission area EA1, the first opening OPE1, and the non-emission area NEA. The first color filter CF1 may not overlap the second emission area EA2, the third emission area EA3, and the fourth emission area EA4. In addition, the first color filter CF1 may overlap the color pattern CP in an area other than the first emission area EA1. For example, the first color filter CF1 may overlap the color pattern CP in the non-emission area NEA.

[0192] The first color filter CF1 can selectively transmit light of a specific wavelength and block or absorb light of different wavelengths. The first color filter CF1 can be a red filter that transmits only red first light and absorbs blue second light and green third light.

[0193] The second color filter CF2 may be disposed on the passivation layer SIL and the first color filter CF1. The second color filter CF2 may overlap the second emission area EA2, the second opening OPE2, and the non-emission area NEA. The second color filter CF2 may not overlap the first emission area EA1, the third emission area EA3, and the fourth emission area EA4.

[0194] The second color filter CF2 can selectively transmit light of a specific wavelength and block or absorb light of different wavelengths. The second color filter CF2 can be a blue filter that transmits only the blue second light and absorbs the red first light and the green third light.

[0195] In an embodiment, the second color filter CF2 may overlap with the color pattern CP and the first color filter CF1 in an area other than the second emission area EA2. For example, the second color filter CF2 may overlap with the color pattern CP and the first color filter CF1 in the non-emission area NEA. In the remaining areas except the emission areas EA1, EA2, EA3 and EA4, the color pattern CP, the first color filter CF1 and the second color filter CF2 may overlap with each other to act as a black matrix. As a result, visible light interference that causes color mixing in the emission areas EA1, EA2, EA3 and EA4 can be prevented, thereby improving the color reproducibility of the display device 10. In addition, since the black matrix can be omitted, the structure can be simplified.

[0196] The overcoat layer OC may be disposed on the color filter layer CFL. The overcoat layer OC may cover the color filter layer CFL to flatten the lower step. The overcoat layer OC may include an organic material, and may include, for example, polyimide (PI).

[0197] like Figure 12 As shown in , the outer coating layer OC may further include a dye that can selectively absorb light in a specific wavelength band. The outer coating layer OC can reduce the reflectivity of external light by absorbing light in a partial wavelength band of light incident from the outside. The outer coating layer OC may include a dye DY mixed with the polymer resin RS. The dye DY may include a dye having a maximum absorption wavelength of 490 nm or 590 nm. Here, the maximum absorption wavelength may refer to a wavelength at Figure 24 and Figure 25 For example, the dye DY may include a dye that can absorb light in a wavelength band of 480 nm to 500 nm or a dye that can absorb light in a wavelength band of 580 nm to 600 nm.

[0198] According to this embodiment, the color pattern CP, color filter layer CFL, and overcoat layer OC of the touch sensing layer TSU may be included as a reflection-reducing layer RPL. The reflection-reducing layer RPL can reduce the reflection of light incident from the outside. When external light is incident, light in a portion of the wavelength band is absorbed by the overcoat layer OC, light in a portion of the wavelength band is absorbed by the color filter layer CFL, and light in a portion of the wavelength band is absorbed by the color pattern CP. As a result, most of the external light incident on the display device 10 is absorbed by the reflection-reducing layer RPL, significantly reducing the amount of light reflected back to the outside.

[0199] In addition, since the color pattern CP may have a low refractive property having a total reflection surface, light emitted from each of the emission areas EA1 , EA2 , EA3 , and EA4 is reflected upward, thereby improving light emission efficiency.

[0200] refer to Figure 13 and Figure 14 , according to the display device 10 of the embodiment (see Figure 4 ) can be used in the emission areas EA1, EA2, EA3 and EA4 (see Figure 8 ) have a predetermined distance G between each of the side surfaces of each color pattern CP. Hereinafter, the second emission area EA2 will be described as an example.

[0201] The second emission area EA2 may be defined as a second opening OPE2 of the pixel defining layer PDL. For example, the second emission area EA2 may be an area at least partially surrounded by the lateral sides of the pixel defining layer PDL. In a plan view, the second emission area EA2 may be at least partially surrounded by the lateral sides of the color pattern CP.

[0202] According to an embodiment, in a plan view, the lateral side of the pixel defining layer PDL in each emission area EA1, EA2, EA3, EA4 can be set within a predetermined distance G from the lateral side of the color pattern CP that at least partially surrounds the corresponding emission area. For example, the distance G between the lateral side of the pixel defining layer PDL and the lateral side of the color pattern CP can be in the range of -1μm to +2μm. For example, the distance G between the lateral side of the pixel defining layer PDL and the lateral side of the color pattern CP can be in the range of -0.5μm to +1.5μm. In this case, the positive sign (+) may refer to the distance that the lateral side of the color pattern CP is spaced outward from the lateral side of the pixel defining layer PDL, and the negative sign (-) may refer to the distance that the lateral side of the color pattern CP is spaced inward from the lateral side of the pixel defining layer PDL. In addition, the outside from the lateral side of the pixel defining layer PDL refers to the outside of the second emission area EA2, and the inside from the lateral side of the pixel defining layer PDL refers to the inside of the second emission area EA2. For example, the lateral side of the color pattern CP may be spaced outwardly from the lateral side of the pixel defining layer PDL by 2 μm or less. The lateral side of the color pattern CP may be spaced inwardly from the lateral side of the pixel defining layer PDL by 1 μm or less. The lateral side of the color pattern CP may be disposed at a distance of 2 μm or less outwardly from the lateral side of the pixel defining layer PDL and at a distance of 1 μm or less inwardly from the lateral side of the pixel defining layer PDL.

[0203] If the distance between the lateral side of the pixel defining layer PDL and the lateral side of the color pattern CP is within the aforementioned range, the emission efficiency of light emitted from the light emitting element ED, which is totally reflected on the lateral side (e.g., inclined surface) of the color pattern CP and travels upward, can be increased.

[0204] Figures 15 to 18 is a cross-sectional view showing each step of the method for manufacturing a display device according to an embodiment. Figure 10 The display device 10 (see Figure 4 ) to describe the example Figures 15 to 18 In addition, the manufacturing process of the display layer DU will be briefly described.

[0205] refer to Figure 15 The thin film transistor layer TFTL, the light emitting element layer EML and the encapsulation layer TFEL are formed on the substrate SUB. The thin film transistor layer TFTL, the light emitting element layer EML and the encapsulation layer TFEL can be formed using a photolithography process, an inkjet printing process, or the like.

[0206] The touch connection electrode TC is formed on the encapsulation layer TFEL. The touch connection electrode TC may be formed by laminating conductive layers and patterning them through a photolithography process.

[0207] Next, a color pattern CP is formed on the encapsulation layer TFEL on which the touch connection electrode TC is formed. The color pattern CP can be formed by applying a solution containing a polymer resin and a colorant and performing a photolithography process using a mask. The color pattern CP may overlap with the third emission area EA3, but not with the first emission area EA1 and the second emission area EA2. In addition, the color pattern CP may overlap with the non-emission area NEA. Contact holes CT exposing the touch connection electrode TC may be formed in the color pattern CP.

[0208] Afterwards, refer to Figure 16 The driving electrode TE of the touch electrode SEN is formed on the color pattern CP. The driving electrode TE can be formed by laminating a conductive layer and patterning it through a photolithography process. The driving electrode TE can be connected to the touch connection electrode TC through the contact hole CT of the color pattern CP.

[0209] Subsequently, an inorganic material or an organic material is applied on the substrate SUB on which the driving electrode TE is formed to form a passivation layer SIL. The passivation layer SIL may cross the emission areas EA1, EA2, EA3, and EA4 (see FIG. Figure 8 ) and a non-emission area NEA are formed. Thus, a touch sensing layer TSU including the color pattern CP, the touch connection electrodes TC, the driving electrodes TE, and the passivation layer SIL is formed.

[0210] Next, a first color filter CF1 is formed on the passivation layer SIL. The first color filter CF1 can be formed by applying a solution containing a polymer resin and a colorant and performing a photolithography process using a mask. The first color filter CF1 can overlap with the first emission area EA1, but not with the second emission area EA2 and the third emission area EA3. In addition, the first color filter CF1 can overlap with the color pattern CP of the non-emission area NEA.

[0211] Next, refer to Figure 17 , a second color filter CF2 is formed on the first color filter CF1. The second color filter CF2 can be formed by applying a solution containing a polymer resin and a colorant and performing a photolithography process using a mask. The second color filter CF2 can overlap with the second emission area EA2, but not with the first emission area EA1 and the third emission area EA3. In addition, the second color filter CF2 can overlap with the color pattern CP of the non-emission area NEA and the first color filter CF1. Thus, a color filter layer CFL including the first color filter CF1 and the second color filter CF2 is formed.

[0212] Next, refer to Figure 18, an overcoat layer OC is formed on the second color filter CF2. The overcoat layer OC can be formed by applying a polymer resin and performing a photolithography process using a mask. The overcoat layer OC can be formed across the emission areas EA1, EA2, EA3, and EA4 and the non-emission area NEA while covering the first color filter CF1, the second color filter CF2, and the color pattern CP.

[0213] In the manufacturing process of the display device 10 described above, a total of three masks can be used to manufacture the overcoat layer OC and the color filter layer CFL formed on the touch sensing layer TSU. Conventionally, four masks have been used to form the red, green, and blue color filters and the black matrix of the color filter layer CFL. In the present disclosure, there is an advantage in that the total number of masks can be reduced to two by omitting the green color filter and the black matrix.

[0214] Hereinafter, a display device according to an embodiment will be described with reference to other drawings.

[0215] Figure 19 is a cross-sectional view schematically showing a display device according to an embodiment.

[0216] refer to Figure 19 , this embodiment is different from the above Figure 10 The difference is that the color pattern CP is omitted (see Figure 10 ) and a first color filter CF1 as a blue color filter and a second color filter CF2 as a yellow color filter are formed in the color filter layer CFL. In the following description, to the extent that an element of this figure is not described in detail, it can be understood that the element is at least similar to the corresponding element described in other parts of the present disclosure.

[0217] The touch sensing layer TSU may be disposed on the encapsulation layer TFEL. The touch sensing layer TSU may include a touch connection electrode TC, a first passivation layer SIL1, a driving electrode TE, and a second passivation layer SIL2.

[0218] The touch connection electrode TC may be provided on the encapsulation layer TFEL. The touch connection electrode TC may be used to connect to the driving electrode TE. The touch connection electrode TC may overlap with the non-emission area NEA.

[0219] The first passivation layer SIL1 may have an insulating function and an optical function. The first passivation layer SIL1 may be provided on the touch connection electrode TC. The first passivation layer SIL1 may include at least one inorganic layer or an organic layer. Optionally, the first passivation layer SIL1 may be omitted.

[0220] The driving electrode TE may be disposed on the first passivation layer SIL1 , connected to the touch connection electrode TC, and overlapped with the non-emission area NEA.

[0221] The second passivation layer SIL2 may be disposed on the first passivation layer SIL1 and the drive electrode TE. The second passivation layer SIL2 may cover the first passivation layer SIL1 and the drive electrode TE. The second passivation layer SIL2 may have both an insulating function and an optical function. For example, the second passivation layer SIL2 may be an organic layer or an inorganic layer including a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, and / or an aluminum oxide layer.

[0222] The color filter layer CFL may be disposed on the touch sensing layer TSU. The color filter layer CFL may include a first color filter CF1 and a second color filter CF2.

[0223] The first color filter CF1 may be disposed on the second passivation layer SIL2. The first color filter CF1 may overlap the second emission area EA2, the second opening OPE2, and the non-emission area NEA. The second color filter CF2 may not overlap the first emission area EA1 and the third emission area EA3.

[0224] The first color filter CF1 may selectively transmit light of a specific wavelength and may block or absorb light of different wavelengths. The first color filter CF1 may be a blue filter that transmits only blue second light and may absorb red first light and green third light.

[0225] The second color filter CF2 may be disposed on the second passivation layer SIL2 and the first color filter CF1. The second color filter CF2 may be disposed on the first emission area EA1, the first opening OPE1, the third emission area EA3, the third opening OPE3, the fourth emission area EA4 (see FIG. Figure 8 ), the fourth opening OPE4 (see Figure 8 ) overlaps with the non-emission area NEA. The second color filter CF2 may not overlap with the second emission area EA2.

[0226] The second color filter CF2 can selectively transmit light of a specific wavelength and block or absorb light of different wavelengths. The second color filter CF2 can be a yellow filter that transmits only the fourth light of yellow color. For example, the second color filter CF2 can transmit the first light of red color and the third light of green color and absorb the second light of blue color.

[0227] In an embodiment, the second color filter CF2 may overlap with the first color filter CF1 in an area other than the second emission area EA2. For example, the second color filter CF2 may overlap with the first color filter CF1 in the non-emission area NEA. In the remaining areas other than the emission areas EA1, EA2, EA3, and EA4, the first color filter CF1 and the second color filter CF2 may overlap with each other to act as a black matrix. As a result, visible light infiltration and color mixing between the first emission area EA1, the second emission area EA2, and the third emission area EA3 may be prevented, which results in the display device 10 (see FIG. 1 ). Figure 4 ) improves the color reproducibility. In addition, since the black matrix can be omitted, the structure can be simplified.

[0228] In addition, the second color filter CF2 overlaps the first and third emission regions EA1 and EA3 so that the red first light emitted from the first emission region EA1 and the green third light emitted from the third emission region EA3 may not be prevented from being transmitted and emitted.

[0229] In addition, since the first color filter CF1, the second color filter CF2, or the first color filter CF1 and the second color filter CF2 completely cover the emission areas EA1, EA2, EA3 and EA4 and the non-emission area NEA, most of the external light incident from the outside can be absorbed, thereby reducing the reflectivity of the external light.

[0230] An overcoat layer (OC) may be disposed on the color filter layer (CFL). The overcoat layer (OC) may cover the color filter layer (CFL) to flatten the lower step. The overcoat layer (OC) may include an organic material, such as polyimide (PI). Furthermore, as described above, the overcoat layer (OC) may further include a dye that selectively absorbs light in a specific wavelength band. The overcoat layer (OC) may reduce the reflectivity of external light by absorbing light in a portion of the wavelength band of light incident from the outside.

[0231] According to this embodiment, the color filter layer CFL and the overcoat layer OC may be included as a reflection-reducing layer RPL. The reflection-reducing layer RPL can reduce the reflection of light incident from the outside. When external light is incident, light in a certain wavelength band is absorbed by the overcoat layer OC, and light in a certain wavelength band is also absorbed by the color filter layer CFL. As a result, most of the external light incident on the display device 10 is absorbed by the reflection-reducing layer RPL, significantly reducing the amount of light reflected back to the outside.

[0232] Figure 20 is a cross-sectional view schematically showing a display device according to still another embodiment.

[0233] refer to Figure 20The touch sensing layer TSU further includes a color pattern CP including a colorant that transmits the first light of red color. In the following description, to the extent that an element of this figure is not described in detail, it can be understood that the element is at least similar to the corresponding element described in other parts of this disclosure.

[0234] The touch sensing layer TSU may be disposed on the encapsulation layer TFEL. The touch sensing layer TSU may include a color pattern CP, a touch connection electrode TC, a driving electrode TE, and a passivation layer SIL.

[0235] The color pattern CP may be disposed on the encapsulation layer TFEL. The color pattern CP may be aligned with the first emission area EA1, the first opening OPE1, and the non-emission area NEA (see FIG. Figure 10 The color pattern CP may not overlap with the second emission area EA2 and the third emission area EA3.

[0236] The color pattern CP can selectively transmit light of a specific wavelength and block or absorb light of different wavelengths. The color pattern CP may include a colorant dispersed in a polymer resin. The polymer resin may be a material that is transparent to visible light and has a low refractive index. The polymer resin may have a refractive index of 1.4 to 1.6. For example, the polymer resin may include an acrylic resin, an epoxy resin, a phenolic resin, a polyimide resin, and / or a polyamide resin. The color pattern CP may include a colorant (such as a dye or pigment) that absorbs light of a wavelength band other than the specific wavelength band. The color pattern CP may be a red color filter that transmits only the first light of a red color and may absorb the second light of a blue color and the third light of a green color. The color pattern CP may be formed by applying a solution in which a polymer resin and a colorant are mixed and curing it.

[0237] In an embodiment, the color pattern CP may further include hollow particles. The hollow particles may be used to reduce the refractive index of the color pattern CP. For example, the hollow particles may include silicon dioxide (SiO2), magnesium fluoride (MgF2), and / or iron oxide (Fe3O4). The hollow particles included in the color pattern CP may be included in a weight ratio of 1% to 50% relative to the polymer resin, thereby reducing the refractive index of the color pattern CP.

[0238] With the launch areas EA1, EA2, EA3 and EA4 (see Figure 8 ) can be an inclined surface. The inclination angle θ1 of the inclined surface (see Figure 11) can be about 60 degrees to 85 degrees, and for example, 70 degrees to 75 degrees. A portion of the light emitted from the light-emitting element ED of each emission area EA1, EA2, EA3, and EA4 can be emitted directly toward the upper portion where the overcoat layer OC is provided, while another portion of the light can travel toward the inclined surface of the color pattern CP. In this case, the inclined surface of the color pattern CP serves as a total reflection surface, so that light incident on the inclined surface of the color pattern CP can be totally reflected and emitted upward.

[0239] The color pattern CP may have a lower refractive index than the first color filter CF1 and the second color filter CF2. The refractive index of the color pattern CP may be 0.05 or more lower than the refractive index of the first color filter CF1 and the refractive index of the second color filter CF2. A portion of the light refracted at the inclined surface of the color pattern CP may be refracted upward at the boundary of the first color filter CF1 or the second color filter CF2 having a relatively high refractive index, thereby improving light emission efficiency.

[0240] In the touch electrode SEN, the touch connection electrode TC may be disposed below the color pattern CP, and the drive electrode TE may be disposed on the color pattern CP. The touch electrode SEN may not overlap with the first emission area EA1, the second emission area EA2, the third emission area EA3, and the fourth emission area EA4. The color pattern CP may serve as an insulating layer to insulate the touch electrode SEN.

[0241] The passivation layer SIL may insulate the driving electrodes TE from the touch electrodes SEN and may serve to protect the color pattern CP from subsequent processes.

[0242] The color filter layer CFL may be disposed on the touch sensing layer TSU. The color filter layer CFL may include a first color filter CF1 and a second color filter CF2.

[0243] The first color filter CF1 may be disposed on the passivation layer SIL. The first color filter CF1 may overlap the second emission area EA2, the second opening OPE2, and the non-emission area NEA. The first color filter CF1 may not overlap the first emission area EA1 and the third emission area EA3. In addition, the first color filter CF1 may overlap the color pattern CP in an area other than the second emission area EA2. For example, the first color filter CF1 may overlap the color pattern CP in the non-emission area NEA.

[0244] The first color filter CF1 can selectively transmit light of a specific wavelength and block or absorb light of different wavelengths. The first color filter CF1 can be a blue filter that transmits only blue second light and absorbs red first light and green third light.

[0245] The second color filter CF2 may be disposed on the passivation layer SIL and the first color filter CF1. The second color filter CF2 may overlap the first emission area EA1, the first opening OPE1, the third emission area EA3, the third opening OPE3, and the non-emission area NEA. The second color filter CF2 may not overlap the second emission area EA2.

[0246] The second color filter CF2 can selectively transmit light of a specific wavelength and can block or absorb light of different wavelengths. The second color filter CF2 can be a yellow filter that only transmits the fourth light of the yellow color. For example, the second color filter CF2 can transmit the first light of the red color and the third light of the green color and absorb the second light of the blue color.

[0247] In an embodiment, the second color filter CF2 may overlap with the color pattern CP and the first color filter CF1 in an area other than the second emission area EA2. For example, the second color filter CF2 may overlap with the color pattern CP and the first color filter CF1 in the non-emission area NEA. In the remaining areas other than the emission areas EA1, EA2, EA3, and EA4, the color pattern CP, the first color filter CF1, and the second color filter CF2 may overlap with each other to act as a black matrix. As a result, visible light interference that causes color mixing in the emission areas EA1, EA2, EA3, and EA4 can be prevented, thereby improving the display device 10 (see FIG. 1 ). Figure 4 ) color reproducibility. In addition, since the black matrix can be omitted, the structure can be simplified.

[0248] In addition, the second color filter CF2 overlaps the first and third emission regions EA1 and EA3 so that the red first light emitted from the first emission region EA1 and the green third light emitted from the third emission region EA3 may not be prevented from being transmitted and emitted.

[0249] Furthermore, since the color pattern CP, the first and second color filters CF1 and CF2 completely cover the emission areas EA1, EA2, EA3, and EA4 and the non-emission area NEA, most of external light incident from the outside may be absorbed, thereby reducing reflectivity of the external light.

[0250] An overcoat layer (OC) may be disposed on the color filter layer (CFL). The overcoat layer (OC) may cover the color filter layer (CFL) to flatten the lower step. The overcoat layer (OC) may include an organic material, such as polyimide (PI). Furthermore, as described above, the overcoat layer (OC) may further include a dye that selectively absorbs light in a specific wavelength band. The overcoat layer (OC) may reduce the reflectivity of external light by absorbing light in a portion of the wavelength band of light incident from the outside.

[0251] According to this embodiment, the color pattern CP, color filter layer CFL, and overcoat layer OC of the touch sensing layer TSU may include a reflection-reducing layer RPL. The reflection-reducing layer RPL can reduce reflection of light incident from the outside. When external light is incident, light in a portion of the wavelength band is absorbed by the overcoat layer OC, light in a portion of the wavelength band is absorbed by the color filter layer CFL, and light in a portion of the wavelength band is absorbed by the color pattern CP. As a result, most of the external light incident on the display device 10 is absorbed by the reflection-reducing layer RPL, significantly reducing the amount of light reflected back to the outside.

[0252] In addition, since the color pattern CP may have a low refractive property having a total reflection surface, light emitted from each of the emission areas EA1 , EA2 , EA3 , and EA4 is reflected upward, thereby improving light emission efficiency.

[0253] Figure 21 is a graph obtained by simulating a red light efficiency ratio according to a distance between a lateral side of a pixel defining layer and a lateral side of a color pattern. Figure 22 is a graph obtained by simulating a blue light efficiency ratio according to a distance between a lateral side of a pixel defining layer and a lateral side of a color pattern.

[0254] refer to Figure 21 , it can be seen that the red light efficiency ratio is greater than 1.2 when the distance between the lateral side of the pixel defining layer and the lateral side of the color pattern is 0 μm, and the red light efficiency ratio is greater than 1.1 when the distance is in the range of -0.5 μm to 1.5 μm.

[0255] refer to Figure 22 , it can be seen that the blue light efficiency ratio is as high as 1.16 when the distance between the lateral side of the pixel defining layer and the lateral side of the color pattern is 0 μm, and is as high as 1.1 or greater when the distance is in the range of -0.5 μm to 1.5 μm.

[0256] These results indicate that a distance between a lateral side of the pixel defining layer and a lateral side of the color pattern in a range of -0.5 μm to 1.5 μm is advantageous in terms of light efficiency.

[0257] Table 1 below shows results of simulating light efficiency and reflective characteristics according to the structure of the display device. Figure 23 Graph showing transmittance in a wavelength band of a yellow color filter (CF) used in the simulation. Figure 24 Graph showing transmittance in a wavelength band of a dye having a maximum absorption wavelength of 490 nm used in the simulation. Figure 25 3 is a graph showing the transmittance in the wavelength band of the dye having the maximum absorption wavelength of 590 nm used in the simulation.

[0258] In the following Table 1, Example 1 is based on Figure 10 The structure shown in and is configured with a color pattern CP that transmits green light, a first color filter CF1 that transmits red light, a second color filter CF2 that transmits blue light, and an overcoat layer OC containing a dye having a maximum absorption wavelength of 590 nm. Example 2 is based on Figure 19 The structure shown in and is provided with a first color filter CF1 transmitting blue light, a second color filter CF2 transmitting yellow light, and an overcoat layer OC containing dyes having maximum absorption wavelengths of 590 nm and 490 nm. Example 3 is based on Figure 20 The structure shown is configured with a color pattern CP that transmits red light, a first color filter CF1 that transmits blue light, a second color filter CF2 that transmits yellow light, and an overcoat layer OC containing dyes having maximum absorption wavelengths of 590 nm and 490 nm. In addition, as a comparative example, a display device is configured to have a color filter layer including a red filter, a green filter, and a blue filter, a black matrix, and an overcoat layer containing a transparent material, without a color pattern.

[0259] In addition, in the following Table 1, efficiency refers to the light efficiency of each of white (W), red (R), green (G), and blue (B), and reflectivity refers to the external light reflectivity of the display device. The unit of each value is %.

[0260] [Table 1]

[0261]

[0262] Referring to Table 1, compared with the comparative example, the efficiency of white light, green light, and blue light increased in each of Examples 1 to 3. In addition, compared with the comparative example, Example 1 had a reduced external light reflectance.

[0263] Through these results, it is confirmed that the display device according to the embodiment can improve light efficiency and reduce reflectivity of external light in some structures.

[0264] In concluding the detailed description, those skilled in the art will appreciate that numerous variations and modifications can be made to the embodiments described herein without substantially departing from the principles of the disclosure.

Claims

1. A display device, characterized in that: The display device includes: substrate; A light-emitting element layer is provided on the substrate, wherein the light-emitting element layer includes a pixel defining layer defining a plurality of emission areas and non-emission areas; an encapsulation layer, disposed on the light-emitting element layer; a touch sensing layer, disposed on the encapsulation layer, the touch sensing layer comprising touch connection electrodes, drive electrodes, and a color pattern disposed between the touch connection electrodes and the drive electrodes; a color filter layer disposed on the touch sensing layer, the color filter layer comprising a plurality of color filters; and an outer coating layer disposed on the color filter layer, wherein the color pattern overlaps with at least one of the plurality of emission areas and the non-emission area, and The plurality of color filters do not overlap with the emission area that overlaps with the color pattern.

2. The display device according to claim 1, wherein The plurality of emission regions include a first emission region that emits a first light, a second emission region that emits a second light, and a third emission region that emits a third light, and Wherein, the color pattern overlaps with the first emission area, the second emission area and / or the third emission area.

3. The display device according to claim 2, wherein: The plurality of color filters respectively overlap different emission areas among the remaining emission areas except the emission area overlapping with the color pattern.

4. The display device according to claim 3, wherein: The color pattern overlaps with the third emission area and does not overlap with the first emission area or the second emission area.

5. The display device according to claim 3, wherein The plurality of color filters include a first color filter that transmits the first light and a second color filter that transmits the second light, and The first color filter overlaps with the first emission area, and the second color filter overlaps with the second emission area.

6. The display device according to claim 1, wherein The color pattern and the plurality of color filters overlap each other in the non-emission area.

7. The display device according to claim 1, wherein The lateral side of the color pattern is disposed at a distance not exceeding 2 μm outward from the lateral side of the pixel defining layer and at a position not exceeding 1 μm inward from the lateral side of the pixel defining layer.

8. A display device, characterized in that: The display device includes: substrate; A light-emitting element layer is provided on the substrate, wherein the light-emitting element layer includes a pixel defining layer defining a plurality of emission areas and non-emission areas; an encapsulation layer, disposed on the light-emitting element layer; a touch sensing layer, disposed on the encapsulation layer, the touch sensing layer comprising touch connection electrodes, drive electrodes, and a color pattern disposed between the touch connection electrodes and the drive electrodes; a color filter layer disposed on the touch sensing layer, the color filter layer comprising a first color filter and a second color filter; and an outer coating layer disposed on the color filter layer, wherein the color pattern overlaps with at least one of the plurality of emission areas and the non-emission area, wherein the first color filter does not overlap with the emission area overlapping with the color pattern, and The second color filter overlaps with the emission area overlapping with the color pattern.

9. The display device according to claim 8, wherein The plurality of emission regions include a first emission region emitting red light, a second emission region emitting blue light, and a third emission region emitting green light, and The color pattern overlaps with the first emission area, the first color filter overlaps with the second emission area, and the second color filter overlaps with the first emission area and the third emission area.

10. The display device according to claim 9, wherein The color pattern is a red filter that transmits the red light, the first color filter is a blue filter that transmits the blue light, and the second color filter is a yellow filter that transmits the red light and the green light.

11. The display device according to claim 10, wherein: The color pattern, the first color filter, and the second color filter overlap each other in the non-emission area.

12. The display device according to claim 10, wherein: The color pattern does not overlap with the second emission area and the third emission area, the first color filter does not overlap with the first emission area and the third emission area, and the second color filter does not overlap with the second emission area.

13. A display device, characterized in that: The display device includes: substrate; A light-emitting element layer is provided on the substrate, wherein the light-emitting element layer includes a pixel defining layer defining a plurality of emission areas and non-emission areas; an encapsulation layer, disposed on the light-emitting element layer; a touch sensing layer, disposed on the encapsulation layer, the touch sensing layer comprising a plurality of touch electrodes; a color filter layer disposed on the touch sensing layer, the color filter layer comprising a plurality of color filters; and an outer coating layer disposed on the color filter layer, The plurality of color filters include a first color filter and a second color filter. wherein the first color filter overlaps one of the plurality of emission regions, and The second color filter overlaps with the remaining two or more emission areas among the plurality of emission areas.

14. The display device according to claim 13, wherein: The plurality of emission regions include a first emission region emitting red light, a second emission region emitting blue light, and a third emission region emitting green light, and The first color filter is a blue color filter that transmits the blue light, and the second color filter is a yellow color filter that transmits the red light and the green light.

15. The display device according to claim 14, wherein: The first color filter overlaps the second emission area and the non-emission area, and the second color filter overlaps the first emission area, the third emission area, and the non-emission area.

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