Display device

Abstract

Provided in one embodiment of the present invention is a display device comprising: a substrate: a pixel definition film which is arranged on the substrate, and in which a first opening is defined; a first organic light-emitting diode which is arranged in the first opening, and which includes a pixel electrode, a light-emitting layer and an opposing electrode; a first light blocking layer which is arranged on the pixel definition film, and in which a second opening overlapping the first opening is defined; a first color filter arranged to overlap the second opening; and a first high refractive layer which overlaps the first light blocking layer, and which has convex lens shape.

Description

display device

[0001] Embodiments of the present invention relate to a display device.

[0002] Organic light-emitting diode (OLED) displays are self-luminous and, unlike liquid crystal displays (LCDs), do not require a separate light source, allowing for reduced thickness and weight. Furthermore, OLED displays exhibit low power consumption, high brightness, and high response speed.

[0003] Embodiments of the present invention aim to provide a display device with improved visibility and quality. However, these tasks are exemplary and do not limit the scope of the present invention.

[0004] According to one aspect of the present invention, a display device is provided, comprising: a substrate; a pixel defining film disposed on the substrate, wherein a first opening is defined; a first organic light-emitting diode including a pixel electrode disposed in the first opening, a light-emitting layer, and a counter electrode; a first light-blocking layer disposed on the pixel defining film, wherein a second opening overlapping the first opening is defined; a first color filter disposed overlapping the second opening; and a first high-refractive layer disposed overlapping the first light-blocking layer and having a shape of a convex lens.

[0005] According to the present embodiment, the device may further include a first touch electrode disposed on the first organic light-emitting diode and disposed within the first light-blocking layer.

[0006] According to the present embodiment, the first touch electrode may include at least one of titanium (Ti), aluminum (Al), molybdenum (Mo), or copper (Cu).

[0007] According to the present embodiment, an overcoat layer may be further included, disposed on the first high refractive index layer.

[0008] According to the present embodiment, the refractive index of the first high refractive index layer may be greater than the refractive index of the overcoat layer.

[0009] According to the present embodiment, the size of the second opening may be larger than the size of the first opening.

[0010] According to the present embodiment, the length of the first high refractive index layer in the first direction may be longer than the length of the first light-blocking layer in the first direction.

[0011] According to the present embodiment, the device may further include a thin film encapsulation layer disposed on the first organic light-emitting diode.

[0012] According to the present embodiment, the touch screen layer may further be disposed on the thin film encapsulation layer.

[0013] According to the present embodiment, the device may further include a pixel circuit disposed on the substrate and electrically connected to the first organic light-emitting diode.

[0014] According to the present embodiment, the present invention may further include a second light-blocking layer arranged to overlap at least a portion of the first organic light-emitting diode.

[0015] According to the present embodiment, the second high refractive layer may further be disposed to overlap with the second light-blocking layer and have a shape of a convex lens.

[0016] According to the present embodiment, the length of the second shading layer in the first direction may be smaller than the length of the first opening in the first direction.

[0017] According to the present embodiment, the second touch electrode may be further included, which is disposed within the second light-blocking layer.

[0018] According to the present embodiment, the length of the second high refractive index layer in the first direction may be longer than the length of the second light-blocking layer in the first direction.

[0019] According to the present embodiment, the second touch electrode may include at least one of titanium (Ti), aluminum (Al), molybdenum (Mo), or copper (Cu).

[0020] According to another aspect of the present invention, a display device is provided, including: a plurality of light-emitting areas arranged in a display area; a light-shielding layer having a plurality of openings overlapping the plurality of light-emitting areas; a plurality of color filter layers overlapping the plurality of light-emitting areas; and a plurality of high-refractive layers arranged on the plurality of color filter layers, overlapping the light-shielding layers, and having a shape of a convex lens.

[0021] According to the present embodiment, a first touch electrode is further included, and the first touch electrode does not overlap with the light-emitting area of ​​the first subpixel and can be in direct contact with the light-shielding layer.

[0022] According to the present embodiment, a metal shading portion is further included, and the metal shading portion overlaps with the light-emitting area of ​​the first subpixel and can be in direct contact with the shading layer.

[0023] According to the present embodiment, the first touch electrode transmits a touch signal, and the metal shielding portion can be grounded.

[0024] According to one embodiment of the present invention, as described above, a display device with improved visibility and quality can be implemented. Of course, the scope of the present invention is not limited by these effects.

[0025] FIG. 1 is a plan view of a display device according to one embodiment of the present invention.

[0026] FIGS. 2 to 4 are cross-sectional views illustrating a portion of a cross-section of a display device according to one embodiment.

[0027] FIG. 5 illustrates a display element provided in one subpixel of a display device according to one embodiment of the present invention and a pixel circuit connected thereto.

[0028] Figure 6 is a cross-sectional view of a display device according to one embodiment of the present invention.

[0029] Figures 7 to 9 are cross-sectional views of another display device according to one embodiment of the present invention.

[0030] Embodiments illustrated in the accompanying drawings will be described in detail, and similar reference numerals throughout indicate similar elements. In this specification, "A and / or B" indicates a case where it is A, B, or both A and B. In addition, "at least one of A and B" indicates a case where it is A, B, or both A and B.

[0031] Since the present invention is susceptible to various modifications and allows for numerous embodiments, specific embodiments will be illustrated in the drawings and described in detail in the description. The effects and features of the present invention, as well as the methods for achieving them, will become clearer with reference to the embodiments described in detail below, along with the drawings. However, the present invention is not limited to the embodiments disclosed below and can be implemented in various forms.

[0032] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. When describing with reference to the drawings, identical or corresponding components are given the same reference numerals and redundant descriptions thereof will be omitted.

[0033] In the following examples, when a film, region, component, etc. is said to be connected, it includes cases where the films, regions, and components are directly connected, and / or cases where other films, regions, and components are interposed between the films, regions, and components and are indirectly connected.

[0034] The x-axis, y-axis, and z-axis are not limited to the three axes on the orthogonal coordinate system, and can be interpreted in a broad sense that includes them.

[0035] Fig. 1 is a plan view of a display device according to one embodiment of the present invention. Figs. 2 to 4 are cross-sectional views illustrating a portion of a cross-section of a display device according to one embodiment.

[0036] Referring to FIG. 1, in one embodiment, the display device includes a display panel (10), and a cover window that protects the display panel (10) may be further disposed on the display panel (10). The display device may include an OLED (organic light-emitting diode) / QLED (quantum dot light-emitting diode) / QD-OLED (quantum dot-organic light-emitting diode) as a display element, and may be used in various electronic devices such as smartphones, foldable smartphones, and tablets. However, the present invention is not limited thereto.

[0037] The display panel (10) may include a display area (DA) that implements an image and a peripheral area (PA) outside the display area (DA). The peripheral area (PA) may be a type of non-display area in which pixels (PX) are not arranged. The display area (DA) may be entirely surrounded by the peripheral area (PA). Various components forming the display panel (10) are arranged on a substrate (100). Therefore, it can be viewed that the substrate (100) includes the display area (DA) and the peripheral area (PA).

[0038] A plurality of pixels (PX) may be arranged in the display area (DA). Each pixel (PX) may include a display element. The display element may be connected to a pixel circuit that drives the pixel (PX). In one embodiment, the display element may be an organic light-emitting diode (OLED). Each pixel (PX) may emit light of, for example, red, green, blue, or white through the organic light-emitting diode (OLED).

[0039] When the display area (DA) is viewed as a planar shape, the display area (DA) may have a rectangular shape as shown in Fig. 1. In another embodiment, the display area (DA) may have a polygonal shape such as a triangle, pentagon, or hexagon, or a circular shape, an oval shape, an irregular shape, etc.

[0040] The peripheral area (PA) is located around the display area (DA) and may not display an image. The PA may contain various wires that transmit electrical signals to the display area (DA), peripheral circuits electrically connected to pixel circuits, and pads to which printed circuit boards or driver IC chips are attached.

[0041] Referring to FIGS. 2 and 3, the display panel (10) may include a substrate (100), a display layer (DISL) on the substrate (100), a touch screen layer (TSL), and an optical function layer (OFL).

[0042] The display layer (DISL) may include a pixel circuit (PC) including a thin film transistor (TFT), a light emitting element (ED) which is a display element, and a sealing member (ENCM) such as a thin film encapsulation layer (TFEL) or a sealing substrate (not shown). An insulating layer (IL, IL') may be disposed between the substrate (100) and the display layer (DISL), and within the display layer (DISL). In FIG. 3, the pixel circuit (PC) is omitted for convenience of illustration.

[0043] The substrate (100) may be a single layer of glass material. Alternatively, the substrate (100) may include a polymer resin. The substrate (100) including the polymer resin may have a multilayer structure in which an organic layer and an inorganic layer including the polymer resin are laminated. The substrate (100) may be a rigid substrate or a flexible substrate capable of bending, folding, rolling, etc.

[0044] A buffer layer (111), an inorganic insulating layer (IIL), and a planarization layer (117) may be sequentially stacked on a substrate (100). The planarization layer (117) may include an organic or inorganic material, and may have a single-layer structure or a multi-layer structure. A pixel circuit (PC) may be arranged between the buffer layer (111) and the planarization layer (117). As illustrated in FIG. 4, the pixel circuit (PC) may include a thin film transistor (TFT) and a capacitor (Cst).

[0045] A thin film transistor (TFT) may include a semiconductor layer (ACT) comprising an organic semiconductor material such as amorphous silicon, polycrystalline silicon, or an oxide semiconductor, a gate electrode (GE), a source electrode (SE), and a drain electrode (DE). A capacitor (Cst) may include a lower electrode (CE1) and an upper electrode (CE2).

[0046] A semiconductor layer (ACT) may be disposed on a buffer layer (111). A first insulating layer (112) may be disposed on the buffer layer (111). The semiconductor layer (ACT) and the gate electrode (GE) may be disposed on the first insulating layer (112). A second insulating layer (113) may be disposed on the first insulating layer and the gate electrode (GE), and an upper electrode (CE2) of a capacitor (Cst) may be disposed on the second insulating layer (113). The upper electrode (CE2) may overlap the gate electrode (GE) therebelow. The gate electrode (GE) and the upper electrode (CE2) overlapping with the second insulating layer (113) therebetween may form a capacitor (Cst). The gate electrode (GE) may be a lower electrode (CE1) of the capacitor (Cst). A third insulating layer (115) may be placed on the second insulating layer (113) and the capacitor (Cst), and a source electrode (SE) and a drain electrode (DE) may be placed on the third insulating layer (115).

[0047] The first insulating layer (112), the second insulating layer (113), and the third insulating layer (115) may each include an inorganic material such as silicon oxide, silicon nitride, and / or silicon oxynitride. The first insulating layer (112), the second insulating layer (113), and the third insulating layer (115) may be collectively referred to as an inorganic insulating layer (IIL).

[0048] A buffer layer (111) including an inorganic material such as silicon oxide, silicon nitride, and / or silicon oxynitride may be placed between the thin film transistor (TFT) and the substrate (100).

[0049] A planarization layer (117) may be disposed on the third insulating layer (115) and the thin film transistor (TFT). The planarization layer (117) may be formed of an organic insulating material such as acrylic, BCB (Benzocyclobutene), or HMDSO (hexamethyldisiloxane). Meanwhile, the planarization layer (117) may include an inorganic insulating material such as silicon oxide (SiOx), silicon nitride (SiNx), silicon oxynitride (SiON), aluminum oxide (Al2O3), titanium oxide (TiO2), tantalum oxide (Ta2O5), hafnium oxide (HfO2), or zinc oxide (ZnO2). When forming the planarization layer (117), chemical mechanical polishing may be performed on the upper surface of the layer to provide a flat upper surface after the layer is formed. The planarization layer (117) may be a single layer or a multi-layer.

[0050] An organic light-emitting diode (OLED), which is a display element and a light-emitting element (ED), may be placed on the planarization layer (117). The organic light-emitting diode (OLED) may include a pixel electrode (121), a counter electrode (123), and an intermediate layer between the pixel electrode (121) and the counter electrode (123).

[0051] A pixel electrode (121) is arranged on top of a planarization layer (117), and the pixel electrode (121) can be electrically connected to a thin film transistor (TFT) by contacting a source electrode (SE) or a drain electrode (DE) through a via hole of the planarization layer (117).

[0052] A pixel definition film (119) may be disposed on the planarization layer (117). The pixel definition film (119) covers the edge of the pixel electrode (121) and may have an opening (OP) that exposes a portion of the pixel electrode (121). The size and shape of the light-emitting area (EA) of the organic light-emitting diode (OLED) may be defined by the opening (OP).

[0053] The pixel definition film (119) may include a transparent insulating material or an opaque insulating material. In one embodiment, the pixel definition film (119) may include an organic insulating material such as polyimide, polyamide, acrylic resin, benzocyclobutene, HMDSO (hexamethyldisiloxane), and phenol resin. In another embodiment, the pixel definition film (119) may include an inorganic insulating material such as silicon nitride or silicon oxide, or may include an organic insulating material and an inorganic insulating material.

[0054] In some embodiments, the pixel defining layer (119) includes a light-blocking material and may be formed in black. The light-blocking material may include carbon black, carbon nanotubes, a resin or paste containing a black dye, metal particles such as nickel, aluminum, molybdenum and alloys thereof, metal oxide particles (e.g., chromium oxide), or metal nitride particles (e.g., chromium nitride). When the pixel defining layer (119) includes a light-blocking material, reflection of external light by metal structures disposed under the pixel defining layer (119) can be reduced.

[0055] As illustrated in FIG. 3, a spacer (SPC) may be further provided on the pixel definition film (119). In one embodiment, the spacer (SPC) may include the same material as the pixel definition film (119). In this case, the pixel definition film (119) and the spacer (SPC) may be formed together in a mask process using a halftone mask or the like, so that the spacer (SPC) may have an island shape that protrudes from the pixel definition film (119) in the z direction at a predetermined interval. In another embodiment, the spacer (SPC) may include a different material from the pixel definition film (119). In this case, the spacer (SPC) may be island-shaped insulating patterns that are arranged at a predetermined interval on the pixel definition film (119).

[0056] As illustrated in FIG. 4, the intermediate layer may include a light-emitting layer (122b) and an organic functional layer (122e) above and / or below the light-emitting layer (122b).

[0057] Light-emitting layers (122b) may be arranged corresponding to pixel electrodes (121) within the openings (OP) of the pixel defining film (119). The light-emitting layer (122b) may include a high molecular weight material or a low molecular weight material and may emit red, green, blue, or white light.

[0058] The organic functional layer (122e) may include a first functional layer (122a) and / or a second functional layer (122c). The first functional layer (122a) or the second functional layer (122c) may be omitted.

[0059] The first functional layer (122a) may be disposed below the light-emitting layer (122b). The first functional layer (122a) may be a single layer or a multilayer made of an organic material. The first functional layer (122a) may be a hole transport layer (HTL) having a single layer structure. Alternatively, the first functional layer (122a) may include a hole injection layer (HIL) and a hole transport layer (HTL). The first functional layer (122a) may be formed integrally to correspond to organic light-emitting diodes (OLEDs) included in the display area (DA).

[0060] The second functional layer (122c) may be disposed on the light-emitting layer (122b). The second functional layer (122c) may be a single layer or multiple layers made of an organic material. The second functional layer (122c) may include an electron transport layer (ETL) and / or an electron injection layer (EIL). The second functional layer (122c) may be integrally formed to correspond to organic light-emitting diodes (OLEDs) included in the display area (DA).

[0061] A counter electrode (123) may be placed on the light-emitting layer (122b). An upper layer (150) containing an organic material may be placed on the counter electrode (123).

[0062] In one embodiment, the intermediate layer may include two or more emitting units sequentially stacked between the pixel electrode (121) and the counter electrode (123), and a charge generation layer (CGL) disposed between the two emitting units. When the intermediate layer includes the emitting units and the charge generation layer, the organic light emitting diode (OLED) may be a tandem light emitting element. The organic light emitting diode (OLED) may improve color purity and luminous efficiency by having a stacked structure of a plurality of emitting units.

[0063] One light-emitting unit may include a light-emitting layer (122b) and a first functional layer (122a) and a second functional layer (122c) above and below the light-emitting layer (122b), respectively. The charge generation layer (CGL) may include a negative charge generation layer and a positive charge generation layer. The light-emitting efficiency of an organic light-emitting diode (OLED), which is a tandem light-emitting device having a plurality of light-emitting layers, may be further increased by the negative charge generation layer and the positive charge generation layer. The negative charge generation layer may be an n-type charge generation layer. The negative charge generation layer may supply electrons. The negative charge generation layer may include a host and a dopant. The host may include an organic material. The dopant may include a metal material. The positive charge generation layer may be a p-type charge generation layer. The positive charge generation layer may supply holes. The positive charge generation layer may include a host and a dopant. The host may include an organic material. The dopant may include a metallic material.

[0064] The upper layer (150) may be a layer provided to protect the counter electrode (123) while increasing light extraction efficiency. In one embodiment, the upper layer (150) may include LiF. In one embodiment, the upper layer (150) may additionally include an inorganic insulating material such as silicon oxide (SiOx) or silicon nitride (SiNx).

[0065] The display elements may be covered with a thin film encapsulation layer (TFEL). In one embodiment, the thin film encapsulation layer (TFEL) may include at least one inorganic encapsulation layer and at least one organic encapsulation layer. For example, the thin film encapsulation layer (TFEL) may include first and second inorganic encapsulation layers (161, 163) and an organic encapsulation layer (162) therebetween.

[0066] A touch screen layer (TSL) may be disposed on the inorganic encapsulation layer (163). The touch screen layer (TSL) may obtain coordinate information according to an external input, for example, a touch event. The touch screen layer (TSL) may detect an external input using a self-capacitance method or a mutual capacitance method. The touch screen layer (TSL) may include touch electrodes (TPEs) and wires connected to the touch electrodes (TPEs). The touch electrodes (TPEs) may include first touch electrodes (171) and second touch electrodes (172). The first touch electrodes (171) may be connected by connection electrodes disposed in the same layer. The second touch electrodes (172) may be connected by connection electrodes (172b) disposed in a different layer and contact holes (CNT) of an insulating layer (174). The touch electrodes (TPEs) may be positioned to correspond to the pixel definition layer (119).

[0067] The optical function layer (OFL) may include a filter layer (180) including a color filter (182), a light-shielding layer (183), and an overcoat layer (184). The light-shielding layer (183) may cover the first touch electrodes (171) and the second touch electrodes (172). The light-shielding layer (183) may be positioned corresponding to the pixel definition layer (119). The overcoat layer (184) may include an organic material such as a resin, and the organic material may be transparent.

[0068] A display panel (10) that uses a color filter (182) and a light-blocking layer (183) as an optical functional layer (OFL) instead of a polarizing plate or polarizing film can improve the luminous efficiency of display elements, thereby improving power consumption and increasing luminance, and thus extending the lifespan of the display panel. In addition, the same or higher luminance / lifespan can be secured even with a smaller area than a conventional luminous area. In addition, since a polarizing plate or polarizing film itself is not used, the thickness of the display panel can be reduced.

[0069] The color filter (182) may include a first color filter (182a) that selectively transmits only light of a first color, a second color filter (182b) that selectively transmits only light of a second color, and a third color filter (182c) that selectively transmits only light of a third color. The first color filter (182a), the second color filter (182b), and the third color filter (182c) may be arranged to correspond to the light emitting area (EA) of the pixel (PX). The first color filter (182a), the second color filter (182b), and the third color filter (182c) may be arranged adjacent to each other. The first color filter (182a), the second color filter (182b), and the third color filter (182c) may each have an independent pattern structure. The first color filter (182a), the second color filter (182b), and the third color filter (182c) may each be positioned within the opening (183OP) of the light-shielding layer (183). The first color filter (182a), the second color filter (182b), and the third color filter (182c) may each partially overlap the pixel definition film (119).

[0070] FIG. 5 illustrates a display element provided in one subpixel of a display device according to one embodiment of the present invention and a pixel circuit connected thereto.

[0071] Referring to FIG. 5, an organic light-emitting diode (OLED), which is a display element, is connected to a pixel circuit (PC). The pixel circuit (PC) may include a first thin film transistor (T1), a second thin film transistor (T2), and a storage capacitor (Cst). The organic light-emitting diode (OLED) may emit, for example, red, green, or blue light, or may emit red, green, blue, or white light.

[0072] The second thin film transistor (T2) is a switching thin film transistor, and is connected to the scan line (SL) and the data line (DL), and can transmit the data voltage input from the data line (DL) to the first thin film transistor (T1) according to the switching voltage input from the scan line (SL). The storage capacitor (Cst) is connected to the second thin film transistor (T2) and the driving voltage line (PL), and can store a voltage corresponding to the difference between the voltage received from the second thin film transistor (T2) and the first power voltage (ELVDD) supplied to the driving voltage line (PL).

[0073] The first thin film transistor (T1) is a driving thin film transistor, and is connected to a driving voltage line (PL) and a storage capacitor (Cst), and can control a driving current flowing through an organic light emitting diode (OLED) from the driving voltage line (PL) in response to a voltage value stored in the storage capacitor (Cst). The organic light emitting diode (OLED) can emit light having a predetermined brightness according to the driving current. A first electrode (e.g., an anode) of the organic light emitting diode (OLED) is connected to a pixel circuit (PC), and a second electrode (e.g., a cathode) of the organic light emitting diode (OLED) can be supplied with a second power voltage (ELVSS).

[0074] Although FIG. 2 illustrates that the pixel circuit (PC) includes two thin film transistors and one storage capacitor, it is to be understood that in other embodiments, the number of thin film transistors or the number of storage capacitors may be changed depending on the design of the pixel circuit (PC).

[0075] FIG. 6 is a cross-sectional view of a display device according to one embodiment of the present invention. For example, it is an enlarged view of a part of FIG. 3.

[0076] Referring to FIG. 6, as described above in FIG. 3, a pixel circuit (PC) may be disposed on a substrate (100), and a first organic light-emitting diode (OLED1) electrically connected thereto may be disposed on the pixel circuit (PC). The first organic light-emitting diode (OLED1) may include a pixel electrode (121), a light-emitting layer (122b), and a counter electrode (123) disposed within a first opening (OP1) of a pixel definition film (119). A thin film encapsulation layer (TFEL) may be disposed on the first organic light-emitting diode (OLED1), and a touch screen layer (TSL) may be disposed on the thin film encapsulation layer (TFEL). The touch screen layer (TSL) may include an insulating layer (174) and a first touch electrode (171).

[0077] In one embodiment, a first light-blocking layer (183a) may be disposed on the first touch electrode (171). The first light-blocking layer (183a) may cover the first touch electrode (171). For example, the first touch electrode (171) may be disposed within the first light-blocking layer (183a) and may be in direct contact with the first light-blocking layer (183a).

[0078] The first touch electrode (171) may include at least one of titanium (Ti), aluminum (Al), molybdenum (Mo), or copper (Cu). For example, the first touch electrode (171) may be provided in a structure in which titanium (Ti) and aluminum (Al) are laminated, a structure in which aluminum (Al) and molybdenum (Mo) are laminated, or a structure in which titanium (Ti) or copper (Cu) is laminated. However, the present invention is not limited thereto.

[0079] The first touch electrode (171) and the first light-blocking layer (183a) may be arranged to overlap at least a portion of the pixel definition film (119). In other words, the first light-blocking layer (183a) may include a second opening (OP2) that overlaps the first opening (OP1) of the pixel definition film (119). The size of the second opening (OP2) defined in the first light-blocking layer (183a) may be larger than the size of the first opening (OP1) defined in the pixel definition film (119). Due to the difference in size between the first opening (OP1) of the pixel defining film (119) and the second opening (OP2) of the first light-blocking layer (183a), a region (s1 or s2) where the first light-blocking layer (183a) is not disposed may exist on the pixel defining film (119) adjacent to the first organic light-emitting diode (OLED1). When external light is incident on the S1 region or the S2 region, the external light may not be absorbed by the first light-blocking layer (183a) and may be reflected by the counter electrode (123) of the first organic light-emitting diode (OLED1). If the reflectivity of the external light incident on the S1 region or the S2 region increases, the visibility of the display device may be adversely affected.

[0080] A first color filter (182a) may be arranged to overlap with the second opening (OP2) of the first light-shielding layer (183a). A first high-refractive-index layer (200a) may be arranged on the first color filter (182a). The first high-refractive-index layer (200a) may be arranged to overlap with the first light-shielding layer (183a). A length (b1) of the first high-refractive-index layer (200a) in a first direction (e.g., the y direction or the -y direction) may be longer than a length (a1) of the first light-shielding layer (183a) in the first direction (e.g., the y direction or the -y direction). The first high-refractive-index layer (200a) may be provided in the shape of a convex lens. In cross-section, the first high-refractive-index layer (200a) may have a convex upper surface.

[0081] An overcoat layer (184) may be disposed on the first high-refractive-index layer (200a). The overcoat layer (184) may be disposed continuously on the substrate (100). The refractive index of the first high-refractive-index layer (200a) may be greater than the refractive index of the overcoat layer (184).

[0082] Due to the first high refractive index layer (200a) having a convex lens shape on the first light-shielding layer (183a) and having a higher refractive index than the overcoat layer (184), external light incident on the S1 region or the S2 region can be refracted on the convex upper surface of the first high refractive index layer (200a) and absorbed into the first light-shielding layer (183a). Since the external light is refracted on the convex upper surface of the first high refractive index layer (200a) and absorbed into the first light-shielding layer (183a), the reflectivity of external light incident on the display device can be reduced, and the visibility of the display device can be improved.

[0083] Additionally, a first high-refractive-index layer (200a) may be formed on the upper portion of the second touch electrode (172).

[0084] Figures 7 to 9 are cross-sectional views of a display device according to another embodiment of the present invention. For example, Figures 7 to 9 schematically illustrate the path of incident external light and the path of light emitted from a first organic light-emitting diode in a display device according to an embodiment of the present invention.

[0085] Referring to FIGS. 7 to 9, a second light-blocking layer (183b) may be disposed on the first organic light-emitting diode (OLED1) so as to overlap at least a portion of the first organic light-emitting diode (OLED1), as well as the first touch electrode (171), the first light-blocking layer (183a), and the first high-refractive-index layer (200a). Specifically, a length (c1) of the second light-blocking layer (183b) in the first direction (e.g., the y direction or the -y direction) may be smaller than a length of the first opening (OP1) of the pixel defining film (119) in the first direction (e.g., the y direction or the -y direction). A metal light-blocking member (173) may be disposed within the second light-blocking layer (183b). For example, the second light-blocking layer (183b) may cover the metal light-blocking member (173). The metal shielding portion (173) may be a part of the first touch electrode (171) and the second touch electrode (172), but unlike the first touch electrode (171) or the second touch electrode (172), it may be grounded or used as a signal wire. The metal shielding portion (173) may be in direct contact with the second shielding layer (183b).

[0086] The metal shielding member (173) may include at least one of titanium (Ti), aluminum (Al), molybdenum (Mo), or copper (Cu). Specifically, the metal shielding member (173) may be provided in a structure in which titanium (Ti) and aluminum (Al) are laminated, a structure in which aluminum (Al) and molybdenum (Mo) are laminated, or a structure in which titanium (Ti) or copper (Cu) is laminated. However, the present invention is not limited thereto.

[0087] A second high refractive index layer (200b) may be disposed on the second light-blocking layer (183b) to overlap with the second light-blocking layer (183b). A length (d1) of the second high refractive index layer (200b) in a first direction (e.g., the y direction or the -y direction) may be longer than a length (c1) of the second light-blocking layer (183b) in the first direction (e.g., the y direction or the -y direction). The second high refractive index layer (200b) may be provided in the shape of a convex lens. In cross-section, the second high refractive index layer (200b) may have a convex upper surface. An overcoat layer (184) may be continuously disposed on the substrate (100) on the second high refractive index layer (200b). A refractive index of the second high refractive index layer (200b) may be greater than a refractive index of the overcoat layer (184).

[0088] When a second light-blocking layer (183b) and a second high-refractive-index layer (200b) having a convex lens shape and a higher refractive index than the overcoat layer (184) are disposed on a first organic light-emitting diode (OLED1), external light incident on the first organic light-emitting diode (OLED1) can be refracted at the convex upper surface of the second high-refractive-index layer (200b) and absorbed by the second light-blocking layer (183b). Since the second high-refractive-index layer (200b) is provided in the shape of a convex lens, the proportion of external light absorbed by the second light-blocking layer (183b) among the external light incident on the first organic light-emitting diode (OLED1) can be increased. In addition, as described above, external light incident on the S1 region or the S2 region can be refracted by the convex upper surface of the first high refractive index layer (200a) on the first light-blocking layer (183b) and absorbed by the first light-blocking layer (183a). Accordingly, external light incident on the display device is refracted by the first high refractive index layer (200a) and the second high refractive index layer (200b) and absorbed by the first light-blocking layer (183a) and the second light-blocking layer (183b), so that the reflectivity of external light incident on the display device is reduced and the visibility of the display device can be improved.

[0089] Even if the second light-blocking layer (183b) and the second high-refractive-index layer (200b) are disposed on the first organic light-emitting diode (OLED1), the light extraction efficiency of light emitted from the first organic light-emitting diode (OLED1) may not be affected. Specifically, under the second light-blocking layer (183b), the light emitted from the first organic light-emitting diode (OLED1) may be reflected by the metal light-blocking portion (173) within the second light-blocking layer (183b), reflected by the counter electrode (123) of the first organic light-emitting diode (OLED1), and emitted to the outside.

[0090] Among the light emitted from the first organic light-emitting diode (OLED1), light emitted in the S1 region or the S2 region may be refracted at the convex upper surface of the first high-refractive-index layer (200a) and emitted in the outward direction of the first organic light-emitting diode (OLED1). In other words, light emitted from the edge portion of the pixel electrode (121) of the first organic light-emitting diode (OLED1) may be refracted at the convex upper surface of the first high-refractive-index layer (200a), so that light may be emitted over a wide range, and the visibility of the display device may be improved.

[0091] While the present invention has been described with reference to the embodiments illustrated in the drawings, these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

Claims

1. Substrate; A pixel definition film disposed on the substrate and having a first opening defined therein; A first organic light-emitting diode including a pixel electrode, a light-emitting layer, and a counter electrode arranged in the first opening; A first light-blocking layer disposed on the pixel definition film and having a second opening defined therein that overlaps the first opening; a first color filter arranged to overlap the second opening; and A display device, comprising: a first high refractive layer, which is arranged to overlap with the first light-blocking layer and is provided in the shape of a convex lens; 2. In paragraph 1, Further comprising a first touch electrode disposed on the first organic light-emitting diode; A display device, wherein the first shading layer overlaps the first touch electrode.

3. In paragraph 2, A display device, wherein the first touch electrode includes at least one of titanium (Ti), aluminum (Al), molybdenum (Mo), or copper (Cu).

4. In paragraph 1, A display device further comprising an overcoat layer disposed on the first high refractive index layer.

5. In paragraph 4, A display device, wherein the refractive index of the first high-refractive-index layer is greater than the refractive index of the overcoat layer.

6. In paragraph 1, A display device wherein the size of the second opening is larger than the size of the first opening.

7. In paragraph 1, A display device, wherein the length of the first high-refractive-index layer in the first direction is longer than the length of the first light-blocking layer in the first direction.

8. In paragraph 1, A display device further comprising a thin film encapsulation layer disposed on the first organic light-emitting diode.

9. In paragraph 8, A display device further comprising a touch screen layer disposed on the thin film encapsulation layer.

10. In paragraph 1, A display device further comprising a pixel circuit disposed on the substrate and electrically connected to the first organic light-emitting diode.

11. In paragraph 1, A display device further comprising a second light-blocking layer arranged to overlap at least a portion of the first organic light-emitting diode.

12. In paragraph 11, A display device further comprising a second high refractive layer, which is arranged to overlap with the second light-blocking layer and is provided in the shape of a convex lens.

13. In paragraph 11, A display device, wherein the length of the second shading layer in the first direction is shorter than the length of the first opening in the first direction.

14. In paragraph 11, A display device further comprising a second touch electrode disposed within the second shading layer.

15. In paragraph 12, A display device, wherein the length of the second high-refractive layer in the first direction is longer than the length of the second light-blocking layer in the first direction.

16. In paragraph 14, A display device, wherein the second touch electrode includes at least one of titanium (Ti), aluminum (Al), molybdenum (Mo), or copper (Cu).

17. First subpixel and second subpixel arranged in the display area; A light-shielding layer overlapping the light-emitting area of ​​the first subpixel and having an opening; A first color filter layer overlapping the light-emitting area of ​​the first subpixel; and A display device comprising a high refractive layer disposed on the first color filter layer, overlapping the light-blocking layer, and having a shape of a convex lens.

18. In paragraph 17, further comprising a first touch electrode; A display device wherein the first touch electrode does not overlap with the light-emitting area of ​​the first subpixel and is in direct contact with the light-shielding layer.

19. In Article 18, It further includes a metal shading part; A display device in which the metal shading portion overlaps with the light-emitting area of ​​the first subpixel and is in direct contact with the shading layer.

20. In paragraph 19, A display device in which the first touch electrode transmits a touch signal and the metal shielding part is grounded.

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