Display device

Abstract

A display device according to one embodiment comprises: a substrate; a light-emitting element layer including light-emitting elements disposed on the substrate; a color filter layer disposed on the light-emitting element layer and including color filters disposed in respective light-emitting areas and a first light blocking pattern disposed in a non-light emitting area surrounding the light-emitting areas; and second light blocking patterns disposed on the light-emitting element layer and disposed in the light-emitting areas.

Description

display device

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

[0002] As the information society develops, demand for display devices for displaying images is increasing in various forms. In response, various types of display devices, including light-emitting displays, are being developed.

[0003] Depending on the display device's usage environment, the visibility of images displayed on the display device may deteriorate. For example, image visibility may deteriorate when external light reflects off the display device.

[0004] The problem to be solved by the present invention is to provide a display device capable of reducing external light reflectance.

[0005] The tasks of the present invention are not limited to the technical tasks mentioned above, and other technical tasks not mentioned will be clearly understood by those skilled in the art from the description below.

[0006] A display device according to one embodiment includes: a substrate; a light-emitting element layer including light-emitting elements arranged on the substrate; a color filter layer disposed on the light-emitting element layer, the color filter layer including color filters arranged in respective light-emitting regions and a first light-blocking pattern arranged in a non-light-emitting region surrounding the light-emitting regions; and second light-blocking patterns disposed on the light-emitting element layer, the second light-blocking patterns arranged inside the light-emitting regions.

[0007] In one embodiment, the second shading patterns are arranged at a position spaced apart from the first shading pattern, and at least one second shading pattern among the second shading patterns may be arranged inside each of the light-emitting areas.

[0008] In one embodiment, the light-emitting regions include a first light-emitting region emitting light of a first color, a second light-emitting region emitting light of a second color, and a third light-emitting region emitting light of a third color, and the color filters may include a first color filter disposed at least in the first light-emitting region, a second color filter disposed at least in the second light-emitting region, and a third color filter disposed at least in the third light-emitting region.

[0009] In one embodiment, the second shading patterns may include color filters of at least two colors arranged to overlap each other at the positions where each of the second shading patterns is arranged.

[0010] In one embodiment, the first color light, the second color light, and the third color light are red light, green light, and blue light, respectively, the first color filter, the second color filter, and the third color filter are red color filters, green color filters, and blue color filters, respectively, and each of the second light-blocking patterns may include the first color filter and the third color filter.

[0011] In one embodiment, each of the second shading patterns may further include the second color filter.

[0012] In one embodiment, the first shading pattern may include the first color filter, the second color filter, and the third color filter arranged to overlap each other in the non-emitting area.

[0013] In one embodiment, the first shading pattern may include a first black matrix pattern disposed in the non-emissive area.

[0014] In one embodiment, the second shading patterns may include at least one second black matrix pattern disposed within each of the light-emitting areas.

[0015] In one embodiment, the color filter layer further includes a low-refractive-index layer covering one surface of the color filters facing the light-emitting element layer, and the second light-blocking patterns may include colored spacer patterns arranged on one surface of the low-refractive-index layer.

[0016] In one embodiment, the display device may further include a light conversion layer disposed between the light emitting element layer and the color filter layer, the light conversion layer including light-transmitting members disposed in the light emitting areas and a first bank disposed in the non-light emitting area.

[0017] In one embodiment, the second shading patterns include at least one second bank disposed in the light conversion layer and separated from the first bank and disposed within each of the light emitting regions, wherein the first bank and the second bank may comprise the same material.

[0018] In one embodiment, the light-emitting regions may include a first light-emitting region that emits light of a first color, a second light-emitting region that emits light of a second color, and a third light-emitting region that emits light of a third color, and the light-transmitting members may include a first light-transmitting member disposed in the first light-emitting region, a second light-transmitting member disposed in the second light-emitting region, and a third light-transmitting member disposed in the third light-emitting region.

[0019] In one embodiment, the light emitting elements may emit light of the third color, the first light-transmitting member may include a first wavelength shifter that converts light of the third color into light of the first color, and the second light-transmitting member may include a second wavelength shifter that converts light of the third color into light of the second color.

[0020] In one embodiment, the first light-transmitting member, the second light-transmitting member, and the third light-transmitting member may include a light diffuser.

[0021] In one embodiment, each of the second shading patterns may include at least one of a first pattern disposed inside the light conversion layer, and a second pattern disposed inside the color filter layer or between the color filter layer and the light conversion layer.

[0022] In one embodiment, each of the second light-shielding patterns may further include at least one of a first reflective film disposed on one surface of the first pattern facing the light-emitting element layer, and a second reflective film disposed on one surface of the second pattern facing the light-emitting element layer.

[0023] A display device according to one embodiment includes: a substrate; a light emitting element layer including light emitting elements arranged on the substrate; a light conversion layer disposed on the light emitting element layer, the light conversion layer including light-transmitting members arranged in light emitting areas and a first bank arranged in a non-light emitting area surrounding the light emitting areas; a color filter layer disposed on the light conversion layer, the color filter layer including color filters arranged in the light emitting areas and a first light shading pattern arranged in the non-light emitting area; and second light shading patterns disposed on at least one of the light conversion layer and the color filter layer, the second light shading patterns being disposed inside the light emitting areas.

[0024] In one embodiment, each of the second shading patterns may include a second bank disposed within the light conversion layer and separated from the first bank.

[0025] In one embodiment, each of the second shading patterns may include at least two color filters arranged within the color filter layer and overlapping each other, or a black matrix pattern arranged within the color filter layer and separated from the first shading pattern.

[0026] Specific details of other embodiments are included in the detailed description and drawings.

[0027] A display device according to embodiments includes light-shielding patterns arranged within light-emitting areas. According to embodiments, the display device can reduce external light reflectance and improve image visibility.

[0028] The effects according to the embodiments are not limited to those exemplified above, and more diverse effects are included in this specification.

[0029] FIG. 1 is a plan view showing a display device according to one embodiment.

[0030] Figure 2 is a plan view showing the display panel of Figure 1.

[0031] Figure 3 is an equivalent circuit diagram showing a pixel according to one embodiment.

[0032] Figure 4 is a plan view showing a display area according to one embodiment.

[0033] Figure 5 is a plan view showing a display area according to one embodiment.

[0034] Fig. 6 is a plan view showing the first color filter of Fig. 4.

[0035] Fig. 7 is a plan view showing the second color filter of Fig. 4.

[0036] Fig. 8 is a plan view showing the third color filter of Fig. 4.

[0037] Fig. 9 is a plan view showing the first bank and the second bank of Fig. 4.

[0038] Fig. 10 is a cross-sectional view showing a display panel according to one embodiment.

[0039] Fig. 11 is a cross-sectional view showing a display panel according to one embodiment.

[0040] Fig. 12 is a cross-sectional view showing a display panel according to one embodiment.

[0041] Figure 13 is an enlarged view of area A1 of Figure 10.

[0042] FIG. 14 is a plan view showing a second color filter according to one embodiment.

[0043] Fig. 15 is a cross-sectional view showing a display panel according to one embodiment.

[0044] Fig. 16 is a cross-sectional view showing a display panel according to one embodiment.

[0045] Fig. 17 is a cross-sectional view showing a display panel according to one embodiment.

[0046] Fig. 18 is a cross-sectional view showing a display panel according to one embodiment.

[0047] Fig. 19 is a cross-sectional view showing a display panel according to one embodiment.

[0048] Fig. 20 is a cross-sectional view showing a display panel according to one embodiment.

[0049] Fig. 21 is a cross-sectional view showing a display panel according to one embodiment.

[0050] Fig. 22 is a cross-sectional view showing a display panel according to one embodiment.

[0051] The advantages and features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms. These embodiments are provided solely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined solely by the scope of the claims.

[0052] When elements or layers are referred to as being "on" another element or layer, this includes both cases where the other element or layer is directly on top of the other element or layer or intervening therebetween. Like reference numerals refer to like elements throughout the specification. The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments are illustrative and therefore the present invention is not limited to the matters illustrated.

[0053] The individual features of the various embodiments of the present invention can be partially or fully combined or combined with one another, enabling various technically feasible interconnections and operations. Each embodiment may be implemented independently of the others, or may be implemented together in a related manner.

[0054] Specific embodiments are described below with reference to the attached drawings.

[0055] Fig. 1 is a plan view showing a display device (100) according to one embodiment. Fig. 2 is a plan view showing a display panel (110) of Fig. 1.

[0056] Referring to FIGS. 1 and 2, the display device (100) is a device that displays a moving image or a still image, and can be used as a display screen for various products such as portable electronic devices such as mobile phones, smart phones, tablet personal computers (PCs), smart watches, watch phones, mobile communication terminals, electronic notebooks, electronic books, portable multimedia players (PMPs), navigation devices, and Ultra Mobile PCs (UMPCs), as well as televisions, laptops, monitors, billboards, and Internet of Things (IOT). These are presented only as examples, and the display device (100) can also be employed in other electronic devices.

[0057] In one embodiment, the display device (100) may be a light-emitting display device such as an organic light-emitting display device including an organic light-emitting diode, a quantum dot light-emitting display device including a quantum dot light-emitting layer, an inorganic light-emitting display device including an inorganic semiconductor, or an ultra-small light-emitting display device including an ultra-small light-emitting diode such as a micro or nano light emitting diode (micro LED or nano LED), but is not limited thereto. For example, the display device (100) may be a type of display device other than a light-emitting display device. Hereinafter, embodiments in which the display device (100) is a light-emitting display device (for example, an organic light-emitting display device) are disclosed.

[0058] The display device (100) may include a display panel (110) including pixels (PX), and a first driving unit (120) and a second driving unit (130) that supply driving signals to the pixels (PX). The display device (100) may further include additional components. For example, the display device (100) may further include a power supply unit for supplying power voltages to the pixels (PX), the first driving unit (120) and the second driving unit (130), and a timing control unit for controlling the operations of the first driving unit (120) and the second driving unit (130).

[0059] The display panel (110) may include a display area (DA) and a non-display area (NDA). The display area (DA) may be an area that displays an image by including pixels (PX). For example, the display area (DA) may include pixel areas in which each pixel (PX) is arranged. The non-display area (NDA) is an area excluding the display area (DA), and an image may not be displayed in the non-display area (NDA). In one embodiment, the non-display area (NDA) may be located around the display area (DA) and may surround the display area (DA).

[0060] In FIGS. 1 and 2, a first direction (D1), a second direction (D2), and a third direction (D3) are defined. In one embodiment, the first direction (D1) may be a horizontal direction of the display panel (110), the second direction (D2) may be a vertical direction of the display panel (110), and the third direction (D3) may be a thickness direction of the display panel (110).

[0061] In one embodiment, the display panel (110) may be formed in a rectangular shape on a plane. Although FIGS. 1 and 2 illustrate a display panel (110) whose horizontal length is longer than its vertical length, the shape of the display panel (110) is not limited thereto. For example, the display panel (110) may have a shape in which the vertical length is longer than the horizontal length, or may have a square shape, etc. The display panel (110) may include angled corners or rounded corners.

[0062] The planar shape of the display panel (110) is not limited to the illustrated rectangular shape, and may be applied in other shapes. For example, the display panel (110) may have a non-rectangular polygonal shape, a circular shape, an oval shape, an irregular shape, or other shapes in addition to the planar shape.

[0063] In one embodiment, the display panel (110) may be substantially flat on a plane defined by the first direction (D1) and the second direction (D2), and may have a uniform thickness in the third direction (D3). Alternatively, the display panel (110) may be provided in a three-dimensional shape having a curved surface, etc.

[0064] The display panel (110) may be provided as a rigid panel that is substantially not deformed, or may be provided as a flexible panel that can be deformed in a form such as by folding, bending, or rolling at least in one portion. The display panel (110) may be provided to the display device (100) in an unbent state, or may be provided to the display device (100) in a bent state in some sections.

[0065] A display panel (110) may include a substrate (SUB) (e.g., a lower substrate) and pixels (PX) arranged on the substrate (SUB). The pixels (PX) may be arranged in a display area (DA) on the substrate (SUB).

[0066] The substrate (SUB) is a base member for manufacturing or providing a display panel (110) and may constitute a base surface of the display panel (110). The substrate (SUB) may include a display area (DA) and a non-display area (NDA) surrounding the display area (DA).

[0067] The display area (DA) may have various shapes depending on the embodiments. For example, the display area (DA) may have a rectangular shape, a non-rectangular polygonal shape, a circular shape, an oval shape, an irregular shape, or other shapes. In one embodiment, the display area (DA) may have a shape that matches the shape of the display panel (110).

[0068] Pixels (PX) may be provided and / or arranged (or placed) in the display area (DA). For example, the display area (DA) may include a plurality of pixel areas in which each pixel (PX) is placed.

[0069] In one embodiment, the display device (100) may be a light-emitting display device, and each pixel (PX) may include a light-emitting element positioned in each light-emitting area and a pixel circuit connected to the light-emitting element. In describing the embodiments, the term "connection" may include the meaning of electrical connection and / or physical connection. Each pixel circuit may include transistors (for example, transistors including a driving transistor that generates a driving current corresponding to a data signal, and at least one switching transistor) and at least one capacitor (for example, a storage capacitor).

[0070] The non-display area (NDA) may include a pad area (PA) where pads (PD) are arranged. In one embodiment, the non-display area (NDA) may further include a driving circuit area located at least on one side of the display area (DA). At least one driving unit, pads (PD), and / or wiring may be arranged in the non-display area (NDA).

[0071] At least one driving unit for driving the pixels (PX), or a part of the driving unit, may be disposed in the driving circuit area. For example, circuit elements constituting the first driving unit (120) (for example, driving unit transistors and driving unit capacitors constituting the stage circuits of the first driving unit (120)) may be disposed in the driving circuit area on the substrate (SUB). In one embodiment, the circuit elements of the first driving unit (120) may be formed in the display panel (110) together with the pixels (PX). In one embodiment, the driving unit transistors provided to the first driving unit (120) may be transistors of a type and / or structure substantially the same as or similar to the transistors provided to the pixels (PX), and may be formed simultaneously with the transistors of the pixels (PX).

[0072] Pads (PD) may be arranged in the pad area (PA). At least one circuit board (140) may be arranged and / or bonded on the pad area (PA). In one embodiment, a plurality of circuit boards (140) connected to different pads (PD) may be arranged on the pad area (PA). The pads (PD) may include signal pads and power pads for transmitting driving signals and power voltages required for driving the pixels (PX) and / or the first driving unit (120) to the inside of the display panel (110).

[0073] The first driving unit (120) and the second driving unit (130) can generate driving signals for controlling the operation timing and brightness of the pixels (PX) and supply the driving signals to the pixels (PX). For example, the first driving unit (120) can be a gate driving unit including a scan driving unit and can be connected to the pixels (PX) through respective gate lines. The first driving unit (120) can supply respective gate signals (for example, control signals for controlling the operation timing of the pixels (PX) including scan signals and / or emission control signals) to the pixels (PX). The second driving unit (130) can be a data driving unit including source driving circuits and can be connected to the pixels (PX) through respective data lines. The second driving unit (130) can supply respective data signals to the pixels (PX).

[0074] In one embodiment, at least one of the first driving unit (120) and the second driving unit (130), or a portion of the at least one driving unit, may be built into the display panel (110). For example, the first driving unit (120) or a portion of the first driving unit (120) may be disposed on the substrate (SUB) of the display panel (110) and may be disposed and / or formed in a non-display area (NDA).

[0075] In FIG. 1, the first driving unit (120) is exemplified as being formed on one side of the display area (DA) (for example, the non-display area (NDA) on the right side of the display area (DA), but the embodiments are not limited thereto. For example, the first driving unit (120) may be positioned only on the other side of the display area (DA) (for example, the non-display area (NDA) on the left side of the display area (DA)) or on both sides of the display area (DA) (for example, the non-display areas (NDA) on the left and right sides of the display area (DA). Alternatively, a part of the first driving unit (120) may be positioned in the non-display area (NDA), and another part of the first driving unit (120) may be positioned in a non-emitting area (for example, an area between the emitting areas of the pixels (PX)) within the display area (DA).

[0076] In one embodiment, the other driving unit among the first driving unit (120) and the second driving unit (130), or a portion of the other driving unit, may be disposed or formed outside the display panel (110) and electrically connected to the display panel (110). For example, the second driving unit (130) may be implemented with a plurality of integrated circuit chips and may be disposed on circuit boards (140) that are electrically connected to the pixels (PX) of the display panel (110). The second driving unit (130) may also be implemented with at least one integrated circuit chip and mounted on a non-display area (NDA) of the display panel (110).

[0077] The circuit board (140) may be connected to the display panel (110) via pads (PD). In one embodiment, the circuit board (140) may be, but is not limited to, a flexible film such as a flexible printed circuit board (FPCB), a printed circuit board (PCB), or a chip on film (COF). In one embodiment, the circuit board (140) may be connected to a timing control unit and / or a power supply unit via another circuit board or a connector.

[0078] Fig. 3 is an equivalent circuit diagram showing a pixel (PX) according to one embodiment. For example, Fig. 3 shows a pixel (PX) of a light-emitting display device including a light-emitting element (EL). The type and / or structure of the pixel (PX) that may be included in the display device (100) may vary depending on the embodiments.

[0079] Referring to FIG. 3, a pixel (PX) may include a light-emitting element (EL) and a pixel circuit (PXC) connected to the light-emitting element (EL). The light-emitting element (EL) is a light source of the pixel (PX), and may be, for example, an organic light-emitting diode, but is not limited thereto. The pixel circuit (PXC) may control the light emission of the light-emitting element (EL).

[0080] The pixel circuit (PXC) may include transistors (T) and a capacitor (Cst). For example, the pixel circuit (PXC) may include a first transistor (T1), a second transistor (T2), a third transistor (T3), and a capacitor (Cst). Although FIG. 3 illustrates an embodiment in which all of the transistors (T) are N-type transistors, the types of the transistors (T) are not limited thereto. For example, at least one transistor (T) may be formed as a P-type transistor.

[0081] The pixel circuit (PXC) can supply a driving current to the light emitting element (EL) in response to driving signals supplied from the first driving unit (120) and the second driving unit (130). For example, the pixel circuit (PXC) can supply a driving current to the light emitting element (EL) in response to a scan signal (SS) and a control signal (CS) supplied from the first driving unit (120) through a scan line (SL) and a control line (CL), and a data signal (Vd) supplied from the second driving unit (130) through a data line (DL).

[0082] Although FIG. 3 illustrates an embodiment in which the scan line (SL) and the control line (CL) are separated from each other, the embodiments are not limited thereto. For example, the control line (CL) may be a portion of the scan line (SL) and may branch off from the scan line (SL), and the control signal (SS) may be a scan signal (SC).

[0083] The first transistor (T1) may be a driving transistor of a pixel (PX), in which the magnitude of a drain-source current (e.g., a driving current) is determined according to a gate-source voltage. The second and third transistors (T2, T3) may be switching transistors that are turned on or off according to their respective gate-source voltages. Depending on the type of each of the transistors (T) (e.g., a P-type or N-type transistor) and / or operating conditions, the first electrode of each of the transistors (T) may be a drain electrode (or a drain region) or a source electrode (or a source region), and the second electrode may be an electrode different from the first electrode. For example, when the first electrode is a drain electrode, the second electrode may be a source electrode.

[0084] A pixel (PX) may be connected to a scan line (SL) for transmitting a scan signal (SC), a control line (CL) for transmitting a control signal (SS) (e.g., a sensing control signal or an initialization control signal), and a data line (DL) for transmitting a data signal (Vd). In addition, the pixel (PX) may be connected to a first power line (VDL) for transmitting a first pixel voltage (ELVDD) (also referred to as a “first pixel power voltage”), and a second power line (VSL) for transmitting a second pixel voltage (ELVSS) (also referred to as a “second pixel power voltage”). A voltage level of the second pixel voltage (ELVSS) may be lower than a voltage level of the first pixel voltage (ELVDD). In one embodiment, the pixel (PX) may further be connected to an initialization power line (VIL) for transmitting an initialization voltage (VINT) (also referred to as a “third pixel power voltage”).

[0085] In one embodiment, the transistors (T) may be positioned in each pixel area and may be oxide transistors including an oxide semiconductor (also referred to as “oxide semiconductor transistors”). For example, the active layer of each of the first, second, and third transistors (T1, T2, T3) may include an oxide semiconductor. However, the embodiments are not limited thereto. For example, at least one transistor (T) may be formed of a semiconductor material other than an oxide semiconductor (e.g., amorphous silicon or polysilicon).

[0086] In one embodiment, a light-blocking layer or a light-blocking electrode (e.g., a bottom electrode or a back-gate electrode) may be disposed under the active layer of at least one of the first, second, and third transistors (T1, T2, T3). For example, a bottom electrode that blocks external light may be disposed under the active layer of the first transistor (T1). Accordingly, the operating characteristics of the first transistor (T1) can be stabilized.

[0087] A first transistor (T1) may include a gate electrode connected to a first node (N1), a first electrode (e.g., a drain electrode) connected to a first power line (VDL), and a second electrode (e.g., a source electrode) connected to a second node (N2). The second node (N2) may be a node to which a pixel circuit (PXC) and a light-emitting element (EL) are connected. The first transistor (T1) may control a driving current of a pixel (PX) in response to a data signal (Vd) transmitted to the first node (N1).

[0088] In one embodiment, the first transistor (T1) may further include a bottom electrode (for example, the bottom electrode (BE) of FIG. 10) connected to the second node (N2). By connecting the bottom electrode of the first transistor (T1) to the second node (N2) to form the first transistor (T1) into a double-gate structured transistor (for example, a double-gate transistor with a source-sync structure), the operating characteristics of the first transistor (T1) can be improved.

[0089] The second transistor (T2) may include a gate electrode connected to the scan line (SL), a first electrode connected to the data line (DL), and a second electrode connected to the first node (N1). The second transistor (T2) may be turned on by a scan signal (SC) of a gate-on voltage applied to the scan line (SL) to connect the data line (DL) and the first node (N1). Accordingly, a data signal (Vd) applied to the data line (DL) may be transmitted to the first node (N1).

[0090] The third transistor (T3) may include a gate electrode connected to a control line (CL) (or scan line (SL)), a first electrode connected to a second node (N2), and a second electrode connected to an initialization voltage line (VIL). The third transistor (T3) may be turned on by a control signal (SS) (or scan signal (SC)) of a gate-on voltage applied to the control line (CL) (or scan line (SL)) to connect the initialization voltage line (VIL) and the second node (N2).

[0091] A capacitor (Cst) may be connected between a first node (N1) and a second node (N2). The capacitor (Cst) is a storage capacitor of the pixel (PX) and may store a voltage (e.g., a difference between a gate voltage and a source voltage of the first transistor (T1)) corresponding to a data signal (Vd) (e.g., a data voltage) transmitted to the first node (N1).

[0092] The light emitting element (EL) may be connected between the pixel circuit (PXC) and the second power line (VSL). For example, the light emitting element (EL) may include a first electrode (e.g., an anode electrode) connected to the pixel circuit (PXC) via a second node (N2), a second electrode (e.g., a cathode electrode) facing the first electrode and connected to the second power line (VSL), and a light emitting layer interposed between the first electrode and the second electrode. In one embodiment, the first electrode of the light emitting element (EL) may be a pixel electrode individually provided to each pixel (PX), and the second electrode of the light emitting element (EL) may be a common electrode shared by a plurality of pixels (PX). The light emitting element (EL) may emit light with a brightness corresponding to the driving current during a period in which the driving current is supplied from the pixel circuit (PXC).

[0093] Fig. 4 is a plan view showing a display area (DA) according to one embodiment. Fig. 5 is a plan view showing a display area (DA) according to one embodiment. For example, Figs. 4 and 5 show a portion of a display area (DA) in which a plurality of unit pixels (UPX) are arranged, and show different embodiments with respect to second light-blocking patterns (LBP2).

[0094] Fig. 6 is a plan view showing the first color filter (CF1) of Fig. 4. Fig. 7 is a plan view showing the second color filter (CF2) of Fig. 4. Fig. 8 is a plan view showing the third color filter (CF3) of Fig. 4. Fig. 9 is a plan view showing the first bank (BNK1) and the second bank (BNK2) of Fig. 4.

[0095] In addition to FIGS. 1 to 3, referring to FIGS. 4 to 9, the display device (100) may include unit pixels (UPX) arranged or positioned in the display area (DA). Each unit pixel (UPX) may include a plurality of pixels (PX) that emit light of different colors in respective light-emitting areas (EA).

[0096] In one embodiment, each unit pixel (UPX) may include a first pixel (PX1) (also referred to as a “first sub-pixel”) that emits a first color of light (e.g., red light), a second pixel (PX2) (also referred to as a “second sub-pixel”) that emits a second color of light (e.g., green light), and a third pixel (PX3) (also referred to as a “third sub-pixel”) that emits a third color of light (e.g., blue light). Although FIG. 4 discloses an embodiment in which one unit pixel (UPX) includes one first pixel (PX1), one second pixel (PX2), and one third pixel (PX3), the embodiments are not limited thereto. For example, the types, numbers, and / or ratios of the pixels (PX) included in each unit pixel (UPX) may vary depending on the embodiments.

[0097] Each pixel (PX) may include a respective light-emitting area (EA) in which a light-emitting element (EL) (for example, an organic light-emitting diode) is disposed. In FIG. 4, the position of each pixel (PX) is indicated based on the light-emitting area (EA), but embodiments are not limited thereto. For example, the pixel area in which each pixel (PX) is provided may include a light-emitting area (EA) in which a light-emitting element (EL) is disposed and a pixel circuit area in which circuit elements of a pixel circuit (PXC) are disposed. In one embodiment, the light-emitting area (EA) and the pixel circuit area of ​​each pixel (PX) may overlap each other.

[0098] The first pixel (PX1) may include a first light-emitting area (EA1) that emits light of a first color. In one embodiment, the first pixel (PX1) may include a light-emitting element (EL) that emits light of the first color (for example, a red light-emitting element), or may include a light-emitting element (EL) that emits light of a specific color (for example, a third color or white) and a wavelength shifter that converts light of the specific color into light of the first color. Accordingly, light of the first color may be emitted from the first light-emitting area (EA1).

[0099] The second pixel (PX2) may include a second light-emitting area (EA2) that emits light of a second color. In one embodiment, the second pixel (PX2) may include a light-emitting element (EL) that emits light of a second color (for example, a green light-emitting element), or may include a light-emitting element (EL) that emits light of a specific color and a wavelength shifter that converts the light of the specific color into light of the second color. Accordingly, light of the second color may be emitted from the second light-emitting area (EA2).

[0100] The third pixel (PX3) may include a third light-emitting area (EA3) that emits light of a third color. In one embodiment, the third pixel (PX3) may include a light-emitting element (EL) that emits light of a third color (for example, a blue light-emitting element), or may include a light-emitting element (EL) that emits light of a specific color and a wavelength shifter that converts the light of the specific color into light of the third color. Accordingly, light of the third color may be emitted from the third light-emitting area (EA3).

[0101] Each of the light-emitting areas (EA) may have a rectangular shape, a non-rectangular polygonal shape, a circular shape, an oval shape, or any other shape. The light-emitting areas (EA) may have substantially the same shape and size, or may have different shapes and / or sizes.

[0102] For example, the shape, size, ratio, and / or arrangement of the first light-emitting area (EA1), the second light-emitting area (EA2), and the third light-emitting area (EA3) may be determined or changed depending on various factors such as the aperture ratio, transmittance, luminous efficiency, visibility, or the white balance of the unit pixel (PX) of the first pixel (PX1), the second pixel (PX2), and the third pixel (PX3). In one embodiment, the first light-emitting area (EA1) and the second light-emitting area (EA2) may have the same or similar sizes, and the third light-emitting area (EA3) may have a smaller size than the first light-emitting area (EA1) and the second light-emitting area (EA2), but is not limited thereto.

[0103] In one embodiment, color filters (CF) that transmit light of a color to be emitted from each pixel (PX) may be arranged in the light-emitting areas (EA). For example, a first color filter (CF1) (e.g., a red color filter) that transmits light of a first color may be arranged in the first light-emitting area (EA1). A second color filter (CF2) (e.g., a green color filter) that transmits light of a second color may be arranged in the second light-emitting area (EA2). A third color filter (CF3) (e.g., a blue color filter) that transmits light of a third color may be arranged in the third light-emitting area (EA3).

[0104] The display area (DA) may further include non-emissive areas (NEAs) in addition to the emissive areas (EAs) of the pixels (PX). The non-emissive areas (NEAs) may surround the emissive areas (EAs). For example, the non-emissive areas (NEAs) may be arranged around the emissive areas (EAs) to surround each of the emissive areas (EAs).

[0105] A first shading pattern (LBP1) may be arranged in the non-emission area (NEA). In one embodiment, the first shading pattern (LBP1) may include color filters (CF) of at least two colors that overlap each other. For example, the first shading pattern (LBP1) may include a first color filter (CF1), a second color filter (CF2), and a third color filter (CF3) that are arranged to overlap each other in the non-emission area (NEA).

[0106] For example, a portion (e.g., a filtering pattern portion) of the first color filter (CF1) may be disposed in the first light-emitting areas (EA1), and another portion (e.g., a light-blocking pattern portion) of the first color filter (CF1) may be disposed in the non-light-emitting area (NEA). The first color filter (CF1) may include first openings (OPN1) corresponding to the second light-emitting areas (EA2) and the third light-emitting areas (EA3).

[0107] A portion of the second color filter (CF2) (e.g., a filtering pattern portion) may be disposed in the second light-emitting areas (EA2), and another portion of the second color filter (CF2) (e.g., a light-blocking pattern portion) may be disposed in the non-light-emitting area (NEA). The second color filter (CF2) may include second openings (OPN2) corresponding to the first light-emitting areas (EA1) and the third light-emitting areas (EA3).

[0108] A portion of the third color filter (CF3) (e.g., a filtering pattern portion) may be disposed in the third light-emitting areas (EA3), and another portion of the third color filter (CF3) (e.g., a light-blocking pattern portion) may be disposed in the non-light-emitting area (NEA). The third color filter (CF3) may include third openings (OPN3) corresponding to the first light-emitting areas (EA1) and the second light-emitting areas (EA2).

[0109] A first bank (BNK1) overlapping the first blocking pattern (LBP1) (for example, overlapping in the third direction D3) may be further disposed in the non-emission area (NEA). In one embodiment, the first bank (BNK1) may be disposed under the first blocking pattern (LBP1). For example, the first blocking pattern (LBP1) may be provided in a color filter layer including color filters (CF), and the first bank (BNK1) may be provided in a light conversion layer disposed under the color filter layer. The first bank (BNK1) may include openings (BOPN) corresponding to the first emission areas (EA1), the second emission areas (EA2), and the third emission areas (EA3). In one embodiment, the openings (BOPN) of the first bank (BNK1) may have a size larger than each of the emission areas (EA) and may expose the emission areas (EA).

[0110] The display device (100) according to the embodiments may further include second light-blocking patterns (LBP2) arranged inside the light-emitting areas (EA). For example, at least one second light-blocking pattern (LBP2) may be arranged inside each of the light-emitting areas (EA).

[0111] For example, as illustrated in FIG. 4, one second blocking pattern (LBP2) may be disposed within each of the light-emitting areas (EA), or as illustrated in FIG. 5, two second blocking patterns (LBP2) may be disposed within each of the light-emitting areas (EA). The number of second blocking patterns (LBP2) disposed within the light-emitting areas (EA) may vary depending on embodiments. For example, three or more second blocking patterns (LBP2) may be disposed within at least one light-emitting area (EA). In addition, the same number of second blocking patterns (LBP2) may be disposed within the first light-emitting area (EA1), the second light-emitting area (EA2), and the third light-emitting area (EA3), or different numbers of second blocking patterns (LBP2) may be disposed within the first light-emitting area (EA1), the second light-emitting area (EA2), and / or the third light-emitting area (EA3). In another embodiment, the second shading pattern (LBP2) may not be arranged in at least one of the first emitting area (EA1), the second emitting area (EA2), and the third emitting area (EA3), and the second shading pattern (LBP2) may be arranged only in the remaining emitting areas (EA).

[0112] In one embodiment, the second shading patterns (LBP2) may be arranged at a position spaced apart from the first shading pattern (LBP1). For example, each second shading pattern (LBP2) may be arranged at the center (for example, an area including the center) of each light-emitting area (EA). For example, each second shading pattern (LBP2) may be an island-shaped pattern arranged separately from the first shading pattern (LBP1).

[0113] Each second shading pattern (LBP2) may be disposed on the light emitting element (EL) of each pixel (PX). For example, the second shading patterns (LBP2) may be disposed on the light emitting element layer including the light emitting element (EL) of each pixel (PX).

[0114] In one embodiment, the second light-shielding patterns (LBP2) may be arranged in the color filter layer and the light conversion layer. For example, each of the second light-shielding patterns (LBP2) may include at least two color filters (CF) (for example, a first color filter (CF1) and a third color filter (CF3)) and a second bank (BNK2) that are arranged to overlap each other at the positions where each of the second light-shielding patterns (LBP2) is arranged. In one embodiment, the first bank (BNK1) and the second bank (BNK2) may be patterns formed simultaneously using the same material and may be separated from each other. For example, the second bank (BNK2) may be arranged separately from the first bank (BNK1) within the light conversion layer (WCL) in which the first bank (BNK1) is provided, and may include the same material as the first bank (BNK1). In one embodiment, the second bank (BNK2) may be positioned below at least two color filters (CF) constituting each second shading pattern (LBP2).

[0115] The structure and position of the second shading patterns (LBP2) may vary depending on the embodiments. For example, the second shading patterns (LBP2) may be arranged on only one of the color filter layer and the light conversion layer. For example, the second shading patterns (LBP2) may include color filters (CF) of at least two colors and may not include the second bank (BNK2). Alternatively, the second shading patterns (LBP2) may include the second bank (BNK2) and may not include color filters (CF) of at least two colors.

[0116] According to embodiments, by arranging at least one second light-blocking pattern (LBP2) within the light-emitting area (EA) of each pixel (PX), reflection of external light can be blocked or reduced. Accordingly, the external light reflectance of the display device (100) can be reduced.

[0117] Fig. 10 is a cross-sectional view showing a display panel (110) according to one embodiment. Fig. 11 is a cross-sectional view showing a display panel (110) according to one embodiment. Fig. 12 is a cross-sectional view showing a display panel (110) according to one embodiment. For example, Figs. 10, 11, and 12 show, respectively, a cross-section of a first pixel (PX1) corresponding to a line X1 to X1' of Fig. 4, a cross-section of a second pixel (PX2) corresponding to a line X2 to X2' of Fig. 4, and a cross-section of a third pixel (PX3) corresponding to a line X3 to X3' of Fig. 4, according to one embodiment. Figs. 10 to 12 show a light-emitting display panel including a light-emitting element (EL) (for example, a tandem organic light-emitting diode) as an example of a display panel (110) to which the embodiments can be applied.

[0118] In addition to FIGS. 1 to 9, referring to FIGS. 10 to 12, the display panel (110) may include a substrate (SUB) (or lower substrate (SUB1)), a panel circuit layer (PCL), a light emitting element layer (LEL), an encapsulation layer (ENL), a light conversion layer (WCL), a color filter layer (CFL), and a protective layer (PRL). The panel circuit layer (PCL), the light emitting element layer (LEL), the encapsulation layer (ENL), the light conversion layer (WCL), the color filter layer (CFL), and the protective layer (PRL) may be arranged to overlap each other on the substrate (SUB). For example, the panel circuit layer (PCL), the light emitting element layer (LEL), the encapsulation layer (ENL), the light conversion layer (WCL), the color filter layer (CFL), and the protective layer (PRL) may be sequentially arranged on the substrate (SUB) along a third direction (D3). The positions and configurations of the panel circuit layer (PCL), light emitting element layer (LEL), encapsulation layer (ENL), light conversion layer (WCL), color filter layer (CFL), and / or protective layer (PRL) may vary depending on the embodiments.

[0119] In one embodiment, the protective layer (PRL) may be an upper substrate (SUB2), and at least one of a light conversion layer (WCL) and a color filter layer (CFL) may be formed on the upper substrate (SUB2). For example, a lower substrate (SUB1) on which a panel circuit layer (PCL), a light emitting element layer (LEL), an encapsulation layer (ENL), and a light conversion layer (WCL) are formed, and an upper substrate (SUB2) on which a color filter layer (CFL) is formed may be bonded to each other with a filler (FIL) interposed therebetween.

[0120] The substrate (SUB) is a base member for forming the display panel (110), and may be a rigid or flexible substrate (or film). In one embodiment, the substrate (SUB) may be a substrate having rigid properties, including an insulating material such as glass, and may not be bent. Alternatively, the substrate (SUB) may be a flexible substrate including polyimide or another insulating material, and capable of deformation, such as bending, folding, or rolling, and may or may not be bent. The type and / or material of the substrate (SUB) may vary depending on the embodiments.

[0121] A panel circuit layer (PCL) (e.g., a pixel circuit layer or a thin film transistor layer) may be disposed on a substrate (SUB). The panel circuit layer (PCL) may include circuit elements including transistors (T) and capacitors (Cst) of pixels (PX), and wires (e.g., signal lines and power lines). In one embodiment, the panel circuit layer (PCL) may further include circuit elements of the first driving unit (120) (e.g., driving unit transistors and / or driving unit capacitors provided to the first driving unit (120)) and / or additional conductive patterns (e.g., bridge patterns).

[0122] FIGS. 10 to 12 illustrate examples of circuit elements that may be provided in a panel circuit layer (PCL), including a first transistor (T1) and a capacitor (Cst) of each pixel (PX). Although FIGS. 10 to 12 disclose an embodiment in which the panel circuit layer (PCL) is directly disposed on the substrate (SUB), the embodiments are not limited thereto. For example, the display panel (110) may further include a barrier layer disposed on the substrate (SUB), and the panel circuit layer (PCL) may be disposed on the barrier layer.

[0123] A panel circuit layer (PCL) may include a plurality of conductive layers and at least one semiconductor layer (SCL). The conductive layers may include electrodes constituting circuit elements of the panel circuit layer (PCL) (e.g., transistors (T) and capacitors (Cst) constituting each pixel circuit (PXC)), conductive patterns (e.g., bridge electrodes) connected to the circuit elements, and / or wirings. The semiconductor layer (SCL) may include active layers (ACT) of transistors (T) provided in the panel circuit layer (PCL).

[0124] In one embodiment, the panel circuit layer (PCL) may include a first conductive layer (CDL1) (e.g., a bottom conductive layer), a semiconductor layer (SCL), a second conductive layer (CDL2) (e.g., a gate conductive layer), and a third conductive layer (CDL3) (e.g., a source-drain conductive layer or a data conductive layer) sequentially disposed on the substrate (SUB) along a third direction (D3). In one embodiment, the panel circuit layer (PCL) may further include at least one conductive layer disposed on the third conductive layer (CDL3), and at least one insulating layer covering the at least one conductive layer. The at least one conductive layer may include a bridge electrode connecting a light-emitting element (EL) of each pixel (PX) to a pixel circuit (PXC) (e.g., a first transistor (T1)), and / or at least one wiring.

[0125] Patterns included in each conductive layer of the panel circuit layer (PCL) (e.g., electrodes, conductive patterns, and / or wires of each conductive layer) may include a conductive material. For example, the patterns provided in each of the first conductive layer (CDL1), the second conductive layer (CDL2), and the third conductive layer (CDL3) may include at least one of copper (Cu), titanium (Ti), molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), silver (Ag), platinum (Pt), palladium (Pd), nickel (Ni), neodymium (Nd), iridium (Ir), tantalum (Ta), tungsten (W), magnesium (Mg), and other metals, alloys thereof, or other conductive materials. In one embodiment, patterns included in the same conductive layer may be simultaneously formed using the same conductive material.

[0126] In one embodiment, each pattern provided on each conductive layer of the panel circuit layer (PCL) may have a single-layer or multi-layer structure. For example, the patterns provided on each of the first conductive layer (CDL1), the second conductive layer (CDL2), and the third conductive layer (CDL3) may have a single-layer or multi-layer structure. In one embodiment, patterns included in the same conductive layer may have the same cross-sectional structure.

[0127] The panel circuit layer (PCL) may further include a plurality of insulating layers and / or insulating patterns arranged on the substrate (SUB). For example, the panel circuit layer (PCL) may include a first insulating layer (INS1), a gate insulating layer (GI), a second insulating layer (INS2), and a third insulating layer (INS3) sequentially arranged on the substrate (SUB) along a third direction (D3).

[0128] In one embodiment, at least one insulating layer provided on the panel circuit layer (PCL) may be disposed over the entire display area (DA). For example, the first insulating layer (INS1), the second insulating layer (INS2), and the third insulating layer (INS3) may be disposed over the entire display area (DA).

[0129] The first insulating layer (INS1) may be disposed on the first conductive layer (CDL1). For example, the first insulating layer (INS1) may be disposed on the substrate (SUB) to cover the patterns of the first conductive layer (CDL1). The first insulating layer (INS1) may include at least one inorganic insulating layer including an inorganic insulating material (for example, silicon nitride, silicon oxide, silicon oxynitride, titanium oxide, aluminum oxide, or another inorganic insulating material).

[0130] The gate insulating layer (GI) may be disposed on the first insulating layer (INS1) and the semiconductor layer (SCL). The gate insulating layer (GI) may cover a portion of each of the first insulating layer (INS1) and the semiconductor layer (SCL). The gate insulating layer (GI) may include at least one inorganic insulating layer including an inorganic insulating material.

[0131] In one embodiment, the gate insulating layer (GI) may be partially disposed only on a portion of each pixel area and a portion of the display area (DA) including the pixel area. In one embodiment, the gate insulating layer (GI) may include a first gate insulating layer (GI1) (also referred to as a “first gate insulating pattern”) disposed on a portion of each active layer (ACT) provided on the semiconductor layer (SCL), and a second gate insulating layer (GI2) (also referred to as a “second gate insulating pattern”) disposed on the first insulating layer (INS1) and not overlapping with the active layer (ACT). For example, the first gate insulating layer (GI1) may be disposed between a portion of the active layer (ACT) including the channel area (CH) and the gate electrode (GE), and the second gate insulating layer (GI2) may be disposed between the first insulating layer (INS1) and the first capacitor electrode (CE1). The first gate insulating layer (GI1) and the second gate insulating layer (GI2) may be an integral insulating pattern that is connected to each other when viewed from a planar view, or may be individual insulating patterns that are separated from each other. However, the embodiments are not limited thereto. For example, the gate insulating layer (GI) may be disposed over the entire display area (DA) to entirely cover the first insulating layer (INS1) and the semiconductor layer (SCL).

[0132] The second insulating layer (INS2) may be disposed on the first insulating layer (INS1), the semiconductor layer (SCL), the gate insulating layer (GI), and the second conductive layer (CDL2). For example, the second insulating layer (INS2) may be disposed on the first insulating layer (INS1) to cover the patterns of the semiconductor layer (SCL), the gate insulating layer (GI), and the second conductive layer (CDL2). The second insulating layer (INS2) may include at least one inorganic insulating layer including an inorganic insulating material.

[0133] The third insulating layer (INS3) may be disposed on the third conductive layer (CDL3). For example, the third insulating layer (INS3) may be disposed on the second insulating layer (INS2) to cover the patterns of the third conductive layer (CDL3).

[0134] The third insulating layer (INS3) may include at least one organic insulating layer including an organic insulating material (e.g., acrylic resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, or other organic insulating material). The third insulating layer (INS3) may include an inorganic insulating layer or may not include an inorganic insulating layer.

[0135] In one embodiment, the third insulating layer (INS3) may be formed as a multilayer including a first layer (INS3a) and a second layer (INS3b) sequentially disposed on the second insulating layer (INS2) and the third conductive layer (CDL3). The first layer (INS3a) of the third insulating layer (INS3) may be an inorganic insulating layer including an inorganic insulating material. The second layer (INS3b) of the third insulating layer (INS3) may be an organic insulating layer including an organic insulating material. A surface of the third insulating layer (INS3) (for example, an upper surface of the second layer (INS3b)) may be substantially flat.

[0136] A first transistor (T1) may include an active layer (ACT) and a gate electrode (GE) (e.g., a top-gate electrode) disposed on a portion of the active layer (ACT). In one embodiment, the first transistor (T1) may further include at least one of a source electrode (SE) and a drain electrode (DE). For example, the first transistor (T1) may further include a source electrode (SE) connected to a source region (SR) of the active layer (ACT) and a drain electrode (DE) connected to a drain region (DR) of the active layer (ACT). Alternatively, the first transistor (T1) may not include separate source electrodes and / or drain electrodes, and the source region (SR) and / or drain region (DR) of the active layer (ACT) may be connected to other circuit elements, wiring, and / or conductive patterns to function as the source electrode and / or the drain electrode of the first transistor (T1).

[0137] In one embodiment, the first transistor (T1) may further include a bottom electrode (BE) (or a light-shielding layer) disposed under the active layer (ACT). In one embodiment, the bottom electrode (BE) may be connected to one electrode (for example, the source electrode (SE) or the gate electrode (GE)) of the first transistor (T1) and may be utilized as a back-gate electrode (BG) that adjusts the characteristics of the first transistor (T1). For example, the bottom electrode (BE) may be connected to the source electrode (SE) of the first transistor (T1) through at least one contact hole penetrating the first insulating layer (INS1) and the second insulating layer (INS2). By disposing the bottom electrode (BE) under the active layer (ACT), external light may be blocked from entering the channel region (CH) of the active layer (ACT), thereby stabilizing the operating characteristics of the first transistor (T1).

[0138] In one embodiment, the first transistor (T1) may be an oxide transistor. For example, the first transistor (T1) may be an N-type oxide transistor.

[0139] A bottom electrode (BE) may be provided on a first conductive layer (CDL1) disposed on a substrate (SUB). The first conductive layer (CDL1) may be covered with a first insulating layer (INS1).

[0140] The bottom electrode (BE) may overlap with the active layer (ACT) and the gate electrode (GE). For example, the bottom electrode (BE) may be positioned below the active layer (ACT) so as to overlap at least a portion of the active layer (ACT) including the channel region (CH), and may face the gate electrode (GE) with the active layer (ACT) interposed therebetween.

[0141] The active layer (ACT) may be provided on a semiconductor layer (SCL). The semiconductor layer (SCL) may be disposed on a first insulating layer (INS1) and may be covered by a gate insulating layer (GI) and a second insulating layer (INS2).

[0142] The active layer (ACT) may include a channel region (CH) and a source region (SR) and a drain region (DR) spaced apart from each other with the channel region (CH) therebetween. For example, the source region (SR) and the drain region (DR) may be located on both sides of the channel region (CH). The source region (SR) and the drain region (DR) may be conductive regions that have a higher carrier concentration (e.g., electron concentration) than the channel region (CH).

[0143] The active layer (ACT) may overlap with the bottom electrode (BE) and the gate electrode (GE). For example, a portion of the active layer (ACT) including the channel region (CH) may overlap with the bottom electrode (BE) and the gate electrode (GE) in the third direction (D3).

[0144] In one embodiment, the active layer (ACT) can include an oxide semiconductor. For example, the active layer (ACT) can include an oxide semiconductor including at least one of indium (In), gallium (Ga), zinc (Zn), tin (Sn), and hafnium (Hf), or another oxide semiconductor. For example, the active layer (ACT) can include at least one of zinc oxide (ZnO), zinc-tin oxide (ZTO), indium-zinc oxide (IZO), indium oxide (InO or In2O3), titanium oxide (TiO or TiO2), indium-gallium oxide (IGO), indium-gallium-zinc oxide (IGZO), indium-gallium-tin oxide (IGTO), indium-zinc-tin oxide (IZTO), indium-tin-gallium-zinc oxide (ITGZO), or another oxide semiconductor.

[0145] A first gate insulating layer (GI1) may be disposed on the active layer (ACT). For example, the first gate insulating layer (GI1) may be disposed between the active layer (ACT) and the gate electrode (GE).

[0146] In one embodiment, the first gate insulating layer (GI1) may cover a portion of the active layer (ACT) including a portion overlapping the gate electrode (GE) and expose another portion of the active layer (ACT). For example, the first gate insulating layer (GI1) may be disposed on a portion of the active layer (ACT) including the channel region (CH) and expose a source region (SR) and a drain region (DR) of the active layer (ACT).

[0147] As the first gate insulating layer (GI1) exposes the source region (SR) and the drain region (DR), the source region (SR) and the drain region (DR) can be appropriately and / or easily made conductive during the manufacturing process of the display panel (110). For example, in the step of etching the gate insulating layer (GI) so that at least a portion of each of the source region (SR) and the drain region (DR) is exposed, oxygen vacancies may occur in the source region (SR) and the drain region (DR). Accordingly, the source region (SR) and the drain region (DR) can be appropriately made conductive in a subsequent process (for example, a process of forming the second insulating layer (INS2)) without performing a separate doping process.

[0148] A gate electrode (GE) may be disposed on a first gate insulating layer (GI1). The gate electrode (GE) may be provided on a second conductive layer (CDL2). The second conductive layer (CDL2) may be disposed on the first insulating layer (INS1) and the gate insulating layer (GI), and may be covered by the second insulating layer (INS2).

[0149] The gate electrode (GE) may be disposed on the active layer (ACT). For example, the gate electrode (GE) may be disposed on the first gate insulating layer (GI1) covering the channel region (CH) of the active layer (ACT). The gate electrode (GE) and the active layer (ACT) may be separated from each other with the first gate insulating layer (GI1) interposed therebetween.

[0150] A second insulating layer (INS2) may be disposed on the gate electrode (GE). The second insulating layer (INS2) may cover the first insulating layer (INS1), the active layer (ACT), the gate insulating layer (GI), and the second conductive layer (CDL2).

[0151] A source electrode (SE) and a drain electrode (DE) may be disposed on the second insulating layer (INS2). The source electrode (SE) and the drain electrode (DE) may be provided on the third conductive layer (CDL3). The third conductive layer (CDL3) may be disposed between the second insulating layer (INS2) and the third insulating layer (INS3).

[0152] The source electrode (SE) may be connected to a portion of the active layer (ACT). For example, the source electrode (SE) may be electrically connected to the source region (SR) of the active layer (ACT) through at least one contact hole penetrating the second insulating layer (INS2). In one embodiment, the source electrode (SE) may also be electrically connected to the bottom electrode (BE).

[0153] The drain electrode (DE) may be connected to another portion of the active layer (ACT). For example, the drain electrode (DE) may be connected to the drain region (DR) of the active layer (ACT) through at least one contact hole penetrating the second insulating layer (INS2).

[0154] The first transistor (T1) of each pixel (PX) may be electrically connected to the light-emitting element (EL) of each pixel (PX). For example, the first transistor (T1) disposed in each pixel area may be electrically connected to the first electrode (AE) of the light-emitting element (EL) disposed in each pixel area in the light-emitting element layer (LEL).

[0155] The capacitor (Cst) may include capacitor electrodes that form electrostatic capacitance. For example, the capacitor (Cst) may include a first capacitor electrode (CE1) and a second capacitor electrode (CE2).

[0156] In one embodiment, the first capacitor (C1) may include multilayer electrodes. For example, at least one of the first capacitor electrode (CE1) and the second capacitor electrode (CE2) may have a multilayer structure including a plurality of sub-electrodes.

[0157] In one embodiment, the first capacitor electrode (CE1) may be a single-layer electrode provided on the second conductive layer (CDL2). However, embodiments are not limited thereto. For example, the first capacitor electrode (CE1) may further include at least one sub-electrode provided on another conductive layer.

[0158] In one embodiment, the first capacitor electrode (CE1) may be connected to the gate electrode (GE) of the first transistor (T1) located in each pixel area. For example, the first capacitor electrode (CE1) may be provided integrally with the gate electrode (GE) of the first transistor (T1) on the second conductive layer (CDL2). For example, the first capacitor electrode (CE1) and the gate electrode (GE) of the first transistor (T1) may be formed as an integral electrode that is connected to each other when viewed on a plane defined by the first direction (D1) and the second direction (D2). In this case, the first gate insulating layer (GI1) located under the gate electrode (GE) of the first transistor (T1) and the second gate insulating layer (GI2) located under the first capacitor electrode (CE1) may be connected to each other.

[0159] In one embodiment, the second capacitor electrode (CE2) may include a first sub-electrode (CE2a) provided on the first conductive layer (CDL1) and a second sub-electrode (CE2b) provided on the third conductive layer (CDL3). The first sub-electrode (CE2a) and the second sub-electrode (CE2b) of the second capacitor electrode (CE2) may overlap the first capacitor electrode (CE1). The first sub-electrode (CE2a) and the second sub-electrode (CE2b) of the second capacitor electrode (CE2) may be electrically connected to each other through at least one contact hole penetrating the first insulating layer (INS1) and the second insulating layer (INS2). By forming the second capacitor electrode (CE2) in a multi-layer structure, the capacitance of the first capacitor (C1) can be appropriately secured by efficiently utilizing a pixel area of ​​a limited size.

[0160] In another embodiment, the second capacitor electrode (CE2) may be formed as a single electrode provided on the first conductive layer (CDL1) or the third conductive layer (CDL3). Alternatively, the second capacitor electrode (CE2) may be formed as a triple-layer or more electrode including at least one sub-electrode provided on another conductive layer (for example, a fourth conductive layer additionally formed between the third insulating layer (INS3) and the light emitting element layer (LEL)).

[0161] In one embodiment, the second capacitor electrode (CE2) may be connected to the source electrode (SE) of the first transistor (T1) located in each pixel area. For example, the first sub-electrode (CE2a) of the second capacitor electrode (CE2) may be provided on the first conductive layer (CDL1) integrally with the bottom electrode (BE) of the first transistor (T1) and may be connected to the source electrode (SE) of the first transistor (T1) through at least one contact hole. The second sub-electrode (CE2b) of the second capacitor electrode (CE2) may be formed integrally with the source electrode (SE) of the first transistor (T1) located in each pixel area, or may be formed separately from the source electrode (SE).

[0162] A light emitting element layer (LEL) may be disposed on the panel circuit layer (PCL). For example, the light emitting element layer (LEL) may be disposed on the third insulating layer (INS3) and may be located at least in the display area (DA).

[0163] The light emitting element layer (LEL) may include light emitting elements (EL) of each pixel (PX). For example, the light emitting element layer (LEL) may include light emitting elements (EL) arranged in light emitting areas (EA) of the pixels (PX) and a pixel defining layer (PDL) arranged around the light emitting elements (EL). When viewed on a plane defined by the first direction (D1) and the second direction (D2), the pixel defining layer (PDL) may surround the light emitting elements (EL) of each pixel (PX).

[0164] Each light emitting element (EL) may include a first electrode (AE) positioned in each light emitting area (EA), and a light emitting layer (OL) and a second electrode (CE) sequentially arranged on the first electrode (AE). One of the first electrode (AE) and the second electrode (CE) of the light emitting element (EL) may be an anode electrode, and the other may be a cathode electrode. For example, the first electrode (AE) may be an anode electrode, and the second electrode (CE) may be a cathode electrode.

[0165] In one embodiment, the first electrode (AE) may be a pixel electrode individually formed for each light-emitting area (EA). The first electrode (AE) may be connected to at least one transistor (T) (for example, the first transistor (T1)) included in the corresponding pixel (PX).

[0166] In one embodiment, the display panel (110) may be a front-emitting display panel, and the first electrode (AE) may include a metal layer including a metal such as Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, or Cr. In one embodiment, the first electrode (AE) may further include a metal oxide layer overlapping the metal layer. For example, the first electrode (AE) may have a double-layer structure of ITO / Ag, Ag / ITO, ITO / Mg, ITO / MgF, or a triple-layer structure such as ITO / Ag / ITO.

[0167] A pixel defining layer (PDL) may be disposed on the first electrodes (AE) of the light emitting elements (EL). For example, the pixel defining layer (PDL) may be disposed on a portion of the first electrodes (AE). For example, the pixel defining layer (PDL) may cover an edge portion of the first electrode (AE) positioned in each light emitting area (EA) and may include an opening that exposes the remaining portion of the first electrode (AE).

[0168] The pixel defining layer (PDL) is primarily positioned in the non-emissive area (NEA) and may have an opening corresponding to each emissive area (EA). In one embodiment, the pixel defining layer (PDL) may also be positioned at the edge of the emissive area (EA).

[0169] The pixel defining layer (PDL) can overlap the first bank (BNK1) of the light conversion layer (WCL) and the first shading pattern (LBP1) of the color filter layer (CFL) in the third direction (D3). For example, the pixel defining layer (PDL) can overlap the first bank (BNK1) and the first shading pattern (LBP1) in the non-emission area (NEA).

[0170] In one embodiment, the pixel defining layer (PDL) may include at least one organic insulating layer including an organic insulating material. For example, the pixel defining layer (PDL) may include an organic insulating material such as, but not limited to, polyacrylates resin, epoxy resin, phenolic resin, polyamides resin, polyimides rein, unsaturated polyesters resin, polyphenylene ethers resin, polyphenylene sulfides resin, or benzocyclobutene (BCB).

[0171] The light-emitting layer (OL) may be disposed on each of the first electrodes (AE). In one embodiment, the light-emitting layer (OL) may have the shape of a continuous film formed over a plurality of light-emitting areas (EA) and a non-light-emitting area (NEA). However, the embodiments are not limited thereto. For example, the light-emitting layer (OL) may be individually formed in each light-emitting area (EA). For example, the light-emitting layers (OL) of the light-emitting elements (EL) located in each of the light-emitting areas (EA) may be formed separately from each other.

[0172] In one embodiment, the light-emitting layer (OL) can emit light of a third color, for example, blue light. However, embodiments are not limited thereto. For example, the light-emitting layer (OL) can also emit white light, etc.

[0173] The light-emitting layer (OL) may be positioned only within the display area (DA), but is not limited thereto. For example, a portion of the light-emitting layer (OL) may also be positioned within at least a portion of the non-display area (NDA).

[0174] The light-emitting layer (OL) of the light-emitting element (EL) may include a polymer material or a low-molecular material. Light emitted from the light-emitting layer (OL) may contribute to image display. A detailed description of the light-emitting layer (OL) will be provided below.

[0175] The second electrode (CE) may be disposed on the light-emitting layer (OL). In one embodiment, the second electrode (CE) may be a common electrode shared by a plurality of pixels (PX). For example, the second electrode (CE) may be formed over the entire display area (DA) (or a portion of the display area (DA)) including a plurality of light-emitting areas (EA).

[0176] In one embodiment, the display panel (110) may be a front-emitting display panel, and the second electrode (CE) may be semi-transparent or transmissive. In one embodiment, the second electrode (CE) may include Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF / Ca, LiF / Al, Mo, Ti, or a compound or mixture thereof, for example, a mixture of Ag and Mg, and may be semi-transmissive. In one embodiment, the second electrode (CE) may include W x O x It may include (tungsten oxide), TiO2 (titanium oxide), ITO (indium tin oxide), IZO (indium zinc oxide), ZnO (zinc oxide), ITZO (indium tin zinc oxide), MgO (magnesium oxide), etc., and may have transparency.

[0177] The first electrode (AE), the light-emitting layer (OL), and the second electrode (CE) disposed in each light-emitting area (EA) can form each light-emitting element (EL). For example, the first electrode (AE), the light-emitting layer (OL), and the second electrode (CE) disposed in the first light-emitting area (EA1) can form the light-emitting element (EL) of the first pixel (PX1) (for example, the first light-emitting element (EL1)). The first electrode (AE), the light-emitting layer (OL), and the second electrode (CE) disposed in the second light-emitting area (EA2) can form the light-emitting element (EL) of the second pixel (PX2) (for example, the second light-emitting element (EL2)). The first electrode (AE), the light-emitting layer (OL), and the second electrode (CE) disposed in the third light-emitting area (EA3) can form the light-emitting element (EL) of the third pixel (PX3) (for example, the third light-emitting element (EL3)).

[0178] In one embodiment, the light-emitting elements (EL) of the pixels (PX) can emit light of the same color. For example, the first light-emitting element (EL1), the second light-emitting element (EL2), and the third light-emitting element (EL3) can be blue organic light-emitting diodes that emit blue light.

[0179] In one embodiment, the light emitting element layer (LEL) may further include a capping layer covering the second electrode (CE). For example, the light emitting element layer (LEL) may further include a capping layer disposed on the second electrode (CE) and including at least one of an inorganic material or an organic material having light transparency. The capping layer may improve the viewing angle characteristics of the display panel (110) and improve external light emission efficiency.

[0180] An encapsulation layer (ENL) may be disposed on a light-emitting element layer (LEL). The encapsulation layer (ENL) covers the light-emitting element layer (LEL) in a display area (DA) and may extend to a non-display area (NDA) to be in contact with a panel circuit layer (PCL). The encapsulation layer (ENL) may block the penetration of oxygen or moisture into the light-emitting element layer (LEL) and may mitigate electrical and / or physical impacts on the panel circuit layer (PCL) and the light-emitting element layer (LEL). In one embodiment, the encapsulation layer (ENL) may include a first encapsulation layer (ENL1), a second encapsulation layer (ENL2), and a third encapsulation layer (ENL3) sequentially disposed on the light-emitting element layer (LEL).

[0181] Each of the first encapsulating layer (ENL1) and the third encapsulating layer (ENL3) may be an inorganic encapsulating layer including an inorganic material. For example, each of the first encapsulating layer (ENL1) and the third encapsulating layer (ENL3) may include silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, silicon oxynitride, lithium fluoride, or the like.

[0182] The second encapsulating layer (ENL2) may be an organic encapsulating layer containing an organic material. For example, the second encapsulating layer (ENL2) may contain an acrylic resin, a methacrylic resin, a polyisoprene, a vinyl resin, an epoxy resin, a urethane resin, a cellulose resin, a perylene resin, and the like.

[0183] The light conversion layer (WCL) may be disposed on the encapsulation layer (ENL). In one embodiment, the light conversion layer (WCL) may be formed on the encapsulation layer (ENL), but is not limited thereto. For example, the light conversion layer (WCL) may be formed on a protective layer (PRL) (e.g., the upper substrate (SUB2)) and then disposed on the encapsulation layer (ENL).

[0184] The light conversion layer (WCL) may include light-transmitting members arranged in the light-emitting areas (EA) and a first bank (BNK1) arranged in the non-light-emitting area (NEA). The light-transmitting members may include a first light-transmitting member (WCL1) (also referred to as a “first light-conversion layer”) arranged in the first light-emitting area (EA1), a second light-transmitting member (WCL2) (also referred to as a “second light-conversion layer”) arranged in the second light-emitting area (EA2), and a third light-transmitting member (TPL) (also referred to as a “light-transmitting layer”) arranged in the third light-emitting area (EA3). In one embodiment, the light conversion layer (WCL) may further include at least one second bank (BNK2) arranged inside each of the light-emitting areas (EA).

[0185] In one embodiment, the light conversion layer (WCL) may further include at least one capping layer. For example, the light conversion layer (WCL) may further include a first capping layer (CPL1) covering the lower surfaces of the light-transmitting members, the first bank (BNK1) and the second banks (BNK2), and a second capping layer (CPL2) covering the upper surfaces of the light-transmitting members, the first bank (BNK1) and the second banks (BNK2).

[0186] The first capping layer (CPL1) may be disposed on the encapsulating layer (ENL). The first capping layer (CPL1) may be formed of an inorganic material, such as silicon nitride, silicon oxynitride, silicon oxide, titanium oxide, or aluminum oxide.

[0187] A first light-transmitting member (WCL1), a second light-transmitting member (WCL2), a third light-transmitting member (TPL), a first bank (BNK1), and a second bank (BNK2) can be arranged on the first capping layer (CPL1).

[0188] The first light-transmitting member (WCL1) can convert a portion of light of a third color (e.g., blue light) incident from the first light-emitting element (EL1) arranged in the first light-emitting area (EA1) into light of a first color (e.g., red light). The light of the first color converted by the first light-transmitting member (WCL1) can be emitted to the upper portion of the display panel (110) by transmitting through the first color filter (CF1) or the like.

[0189] The first light-transmitting member (WCL1) may include a first base resin (BRS1) and a first wavelength shifter (WS1). The first base resin (BRS1) may include a light-transmitting organic material. For example, the first base resin (BRS1) may include an epoxy-based resin, an acrylic resin, a cardo-based resin, or an imide-based resin. The first wavelength shifter (WS1) may convert light of a third color incident from the first light-emitting element (EL1) into light of a first color. The first wavelength shifter (WS1) may be a quantum dot (for example, a red quantum dot), a quantum rod, a fluorescent material, or a phosphorescent material. In one embodiment, the first light-transmitting member (WCL1) may further include a light diffusing agent (SCT), such as titanium dioxide (TiO2).

[0190] The second light-transmitting member (WCL2) can convert a portion of the third color light (e.g., blue light) incident from the second light-emitting element (EL2) arranged in the second light-emitting area (EA2) into a second color light (e.g., green light). The second color light converted by the second light-transmitting member (WCL2) can be emitted to the upper portion of the display panel (110) by transmitting through the second color filter (CF2) or the like.

[0191] The second light-transmitting member (WCL2) may include a second base resin (BRS2) and a second wavelength shifter (WS2). The second base resin (BRS2) may include a light-transmitting organic material. For example, the second base resin (BRS2) may include an epoxy-based resin, an acrylic resin, a cardo-based resin, or an imide-based resin. The second wavelength shifter (WS2) may convert light of a third color incident from the second light-emitting element (EL2) into light of a second color. The second wavelength shifter (WS2) may be a quantum dot (for example, a green quantum dot), a quantum rod, a fluorescent material, or a phosphorescent material. In one embodiment, the second light-transmitting member (WCL2) may further include a light diffusing agent (SCT), such as titanium dioxide (TiO2).

[0192] The third light-transmitting member (TPL) can diffuse and / or transmit third color light (e.g., blue light) incident from the third light-emitting element (EL3) arranged in the third light-emitting area (EA3). The third color light transmitted through the third light-transmitting member (TPL) can be emitted to the upper portion of the display panel (110) through the third color filter (CF3) or the like.

[0193] The third light-transmitting member (TPL) may include a third base resin (BRS3). The third base resin (BRS3) may include a light-transmitting organic material. For example, the third base resin (BRS3) may include an epoxy-based resin, an acrylic-based resin, a cardo-based resin, or an imide-based resin. In one embodiment, the third light-transmitting member (TPL) may further include a light diffusing agent (SCT), such as titanium dioxide (TiO2).

[0194] The first bank (BNK1) can be arranged in the non-emissive area (NEA) to define or define the light-emitting areas (EA) in which the light-transmitting elements are provided. For example, the first bank (BNK1) can include openings (BOPN in FIG. 9) corresponding to the light-emitting areas (EA) of the pixels (PX) and surround the light-emitting areas (EA).

[0195] In one embodiment, the first bank (BNK1) may be formed with a relatively thick thickness to provide a space in which the light-transmitting elements are formed. For example, the thickness of the first bank (BNK1) may be in the range of 1 μm to 10 μm, but is not limited thereto.

[0196] In one embodiment, the first bank (BNK1) may include an organic insulating material (e.g., acrylic resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, or other organic insulating material). In one embodiment, the first bank (BNK1) may further include a light-blocking material. For example, the first bank (BNK1) may include a dye or pigment having light-blocking properties (e.g., an inorganic black pigment such as carbon black or an organic black pigment). Accordingly, the first bank (BNK1) may have light-blocking properties.

[0197] The second bank (BNK2) may be arranged separately from the first bank (BNK1) within each of the light-emitting areas (EA). The second bank (BNK2) may form a second shading pattern (LBP2) in each light-emitting area (EA).

[0198] In one embodiment, the second bank (BNK2) may be formed simultaneously with the first bank (BNK1) and may include the same material as the first bank (BNK1). For example, the second bank (BNK2) may include an organic insulating material and a light-shielding material. In one embodiment, the second bank (BNK2) may be formed to the same height as the first bank (BNK1), but is not limited thereto.

[0199] In one embodiment, each second shading pattern (LBP2) may include at least one of a first pattern (LBP2a) (e.g., a lower pattern) disposed inside the light conversion layer (WCL), and a second pattern (LBP2b) (e.g., an upper pattern) disposed on the upper portion of the light conversion layer (WCL) (e.g., inside the color filter layer (CFL), or between the color filter layer (CFL) and the light conversion layer (WCL)). When the second shading pattern (LBP2) includes the first pattern (LBP2a) and the second pattern (LBP2b), the first pattern (LBP2a) and the second pattern (LBP2b) may overlap each other at positions where each second shading pattern (LBP2) is provided.

[0200] In one embodiment, the first pattern (LBP2a) of the second shading pattern (LBP2) may include a second bank (BNK2). In one embodiment, the second pattern (LBP2b) of the second shading pattern (LBP2) may include color filters (CF) of at least two colors that overlap each other at positions where each second shading pattern (LBP2) is provided.

[0201] A second capping layer (CPL2) may be disposed on the first light-transmitting member (WCL1), the second light-transmitting member (WCL2), the third light-transmitting member (TPL), the first bank (BNK1), and the second bank (BNK2). The second capping layer (CPL2) may protect the light-transmitting members of the wavelength conversion layer (WCL), the first bank (BNK1), and the second bank (BNK2) from moisture, foreign substances, or the like. In one embodiment, the second capping layer (CPL2) may include an inorganic material. In one embodiment, the second capping layer (CPL2) may include the same material as the first capping layer (CPL1), but is not limited thereto.

[0202] A color filter layer (CFL) may be disposed on the second capping layer (CPL2). In one embodiment, the light conversion layer (WCL) and the color filter layer (CFL) may be formed on different substrate members (for example, the lower substrate (SUB1) and the upper substrate (SUB2)) and then bonded to face each other, and a filler (FIL) may be disposed between the light conversion layer (WCL) and the color filter layer (CFL).

[0203] A filler (FIL) can fill a space between a light conversion layer (WCL) and a color filter layer (CFL). The filler (FIL) can be made of a material having an extinction coefficient of substantially 0. The refractive index and the extinction coefficient are correlated, and as the refractive index decreases, the extinction coefficient can also decrease. In addition, when the refractive index is 1.7 or less, the extinction coefficient can converge to substantially 0. In one embodiment, the filler (500) can be made of a material having a refractive index of 1.7 or less, thereby preventing or minimizing light emitted from the light emitting element (EL) from being absorbed while passing through the filler (FIL). In one embodiment, the filler (FIL) can be made of an organic material having a refractive index in a range of 1.4 to 1.6.

[0204] The color filter layer (CFL) may include color filters (CF) arranged in each of the light-emitting areas (EA). For example, the color filter layer (CFL) may include a first color filter (CF1) arranged in a first light-emitting area (EA1), a second color filter (CF2) arranged in a second light-emitting area (EA2), and a third color filter (CF3) arranged in a third light-emitting area (EA3). The color filter layer (CFL) may further include a first light-blocking pattern (LBP1) arranged in a non-light-emitting area (NEA).

[0205] The first color filter (CF1) can transmit light of a first color and absorb or block light of a third color. For example, the first color filter (CF1) can transmit light of a first color converted by the first light-transmitting member (WCL1) among light of a third color emitted from the first light-emitting element (EL1), and absorb or block light of a third color not converted by the first light-transmitting member (WCL1). Accordingly, light of a first color can be emitted from the first light-emitting area (EA1). For example, the first color filter (CF1) can be a red color filter, and red light can be emitted from the first light-emitting area (EA1).

[0206] The second color filter (CF2) can transmit light of a second color and absorb or block light of a third color. For example, the second color filter (CF2) can transmit light of a second color converted by the second light-transmitting member (WCL2) among light of a third color emitted from the second light-emitting element (EL2), and absorb or block light of a third color not converted by the second light-transmitting member (WCL2). Accordingly, light of a second color can be emitted from the second light-emitting area (EA2). For example, the second color filter (CF2) can be a green color filter, and green light can be emitted from the second light-emitting area (EA2).

[0207] The third color filter (CF3) can transmit light of a third color. For example, the third color filter (CF3) can transmit light of a third color that is emitted from the third light-emitting element (EL3) and passes through the third light-transmitting member (TPL). Accordingly, light of a third color can be emitted from the third light-emitting area (EA3). For example, the third color filter (CF3) can be a blue color filter, and blue light can be emitted from the third light-emitting area (EA3).

[0208] Each of the first, second, and third color filters (CF1, CF2, CF3) can block external light incident from the outside. For example, the first color filter (CF1) can block the second color light, which is light in the green wavelength band, and the third color light, which is light in the blue wavelength band, incident from the outside, thereby increasing the purity (color purity) of the color corresponding to the first color light, which is light in the red wavelength band.

[0209] The first shading pattern (LBP1) can overlap with the first bank (BNK1). The first shading pattern (LBP1) can be formed as a single-layer or multi-layer shading layer.

[0210] In one embodiment, the first shading pattern (LBP1) may include a first color filter (CF1), a second color filter (CF2), and a third color filter (CF3) arranged to overlap each other in the non-emission area (NEA). For example, the first color filter (CF1), the second color filter (CF2), and the third color filter (CF3) arranged in each of the emission areas (EA) may extend into the non-emission area (NEA) and overlap each other, thereby forming the first shading pattern (LBP1).

[0211] In one embodiment, the color filter layer (CFL) may further include a second pattern (LBP2b) of the second light-shielding pattern (LBP2). In one embodiment, the second pattern (LBP2b) of the second light-shielding pattern (LBP2) may include a first color filter (CF1) and a third color filter (CF3) that overlap each other in an area where each second light-shielding pattern (LBP2) is disposed. For example, the second pattern (LBP2b) of the second light-shielding pattern (LBP2) disposed in each of the first light-emitting area (EA1) and the third light-emitting area (EA3) may have a structure in which the first color filter (CF1) and the third color filter (CF3) are stacked. In one embodiment, the second pattern (LBP2b) of the second light-shielding pattern (LBP2) disposed in the second light-emitting area (EA2) may have a structure in which the first color filter (CF1), the second color filter (CF2), and the third color filter (CF3) are stacked.

[0212] In one embodiment, the color filter layer (CFL) may further include a low-refractive-index layer (LRL) covering one surface of the color filters (CF). For example, the low-refractive-index layer (LRL) may cover one surface of the color filters (CF) facing the light-emitting element layer (LEL), etc.

[0213] In one embodiment, the low refractive index layer (LRL) may have a lower refractive index than the light-transmitting elements of the light conversion layer (WCL) (e.g., the first light-transmitting element (WCL1), the second light-transmitting element (WCL2), and the third light-transmitting element (TPL)). Accordingly, total reflection of light traveling from the light-transmitting elements of the light conversion layer (WCL) to the low refractive index layer (LRL) may be induced, thereby recycling the light and increasing the light efficiency of the pixels (PX).

[0214] In one embodiment, the refractive index of the low refractive layer (LRL) may be 1.3 or less. When the refractive index of the low refractive layer (LRL) is 1.3 or less, the difference in refractive index with respect to the light-transmitting members of the light conversion layer (WCL) is large, so that total reflection of light can sufficiently occur. In addition, the low refractive layer (LRL) can compensate for the step difference caused by the first light-blocking pattern (LBP1) and the second light-blocking patterns (LBP2) of the color filter layer (CFL), thereby flattening the surface of the color filter layer (CFL).

[0215] A protective layer (PRL) may be disposed on a substrate (SUB) to cover elements disposed on the substrate (SUB) (e.g., a panel circuit layer (PCL), a light emitting element layer (LEL), an encapsulation layer (ENL), a light conversion layer (WCL), and / or a color filter layer (CFL)). In one embodiment, the protective layer (PRL) may be an upper substrate (SUB2) on which a color filter layer (CFL) is formed.

[0216] The protective layer (PRL) may be a rigid or flexible substrate or film. In one embodiment, the protective layer (PRL) may include an insulating material such as glass and may have rigid properties and may not be bendable. Alternatively, the protective layer (PRL) may include polyimide or another insulating material and may have flexible properties that allow for deformation such as bending, folding, and rolling, and may or may not be bendable.

[0217] According to embodiments, by arranging at least one second blocking pattern (LBP2) inside each of the light-emitting areas (EA), reflection of external light can be blocked or reduced. For example, the first reflected light (L1) reflected from the first electrode (AE) of the light-emitting element layer (LEL) can be blocked by the first pattern (LBP2a) of the second blocking pattern (LBP2) (for example, the second bank (BNK2)), and the second reflected light (L2) reflected from the light conversion layer (WCL) can be blocked by the first pattern (LBP2a) of the second blocking pattern (LBP2) (for example, a multilayer film including the first color filter (CF1) and the third color filter (CF3).

[0218] The second light-shielding pattern (LBP2) can be formed to a small size that does not significantly reduce the aperture ratio (or the area or ratio of the light-emitting area (EA)) of each pixel (PX). In one embodiment, at least one of the number, position, and size of the second light-shielding pattern (LBP2) arranged in each light-emitting area (EA) can be adjusted or determined in consideration of at least one of the aperture ratio, light efficiency, brightness, and external light reflectance of each pixel (PX). Accordingly, the aperture ratio and brightness of each pixel (PX) can be appropriately secured while reducing the reflectance of external light.

[0219] Fig. 13 is an enlarged view of area A1 of Fig. 10. For example, Fig. 13 shows in detail a light-emitting layer (OL) according to one embodiment.

[0220] Referring to FIGS. 10 to 13, the light-emitting layer (OL) may be formed in a structure in which a plurality of light-emitting material layers are overlapped, for example, in a tandem structure. In one embodiment, the light-emitting layer (OL) may include a first stack (ST1) including a first light-emitting material layer (EML1), a second stack (ST2) positioned on the first stack (ST1) and including a second light-emitting material layer (EML2), a third stack (ST3) positioned on the second stack (ST2) and including a third light-emitting material layer (EML3), a first charge generation layer (CGL1) positioned between the first stack (ST1) and the second stack (ST2), and a second charge generation layer positioned between the second stack (ST2) and the third stack (ST3). The first stack (ST1), the second stack (ST2), and the third stack (ST3) may overlap each other.

[0221] The first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may overlap each other. In one embodiment, the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may all emit light of a third color, for example, blue light. For example, the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may each be a blue light-emitting layer and may include an organic material.

[0222] In one embodiment, at least one of the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) can emit first blue light having a first peak wavelength, and at least another one of the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) can emit second blue light having a second peak wavelength different from the first peak wavelength. In one embodiment, one of the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) can emit first blue light having a first peak wavelength, and the remaining two of the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) can emit second blue light having a second peak wavelength. For example, the light (LE) finally emitted from the light-emitting layer (OL) may be a mixed light in which a first component (LE1) and a second component (LE2) are mixed, and the first component (LE1) may be a first blue light having a first peak wavelength, and the second component (LE2) may be a second blue light having a second peak wavelength.

[0223] In one embodiment, one of the first peak wavelength and the second peak wavelength may be in a range of 440 nm to 460 nm, and the other of the first peak wavelength and the second peak wavelength may be in a range of 460 nm to 480 nm. However, the range of the first peak wavelength and the range of the second peak wavelength are not limited thereto. For example, the range of the first peak wavelength and the range of the second peak wavelength may both include 460 nm. In one embodiment, one of the first blue light and the second blue light may be a deep blue color light, and the other of the first blue light and the second blue light may be a sky blue color light.

[0224] In one embodiment, the light emitting layer (OL) emits blue light (LE) and may include a long wavelength component and a short wavelength component. Accordingly, the light emitting layer (OL) can emit blue light having a more widely distributed emission peak as the light emitting layer (LE). This has the advantage of improving color visibility at a side viewing angle compared to a display panel (110) using another light emitting element that emits blue light having a sharper emission peak.

[0225] In one embodiment, the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may each include a host and a dopant. The hosts are Alq3 (tris(8-hydroxyquinolino)aluminum), CBP (4,4'-bis(N-carbazolyl)-1,1'-biphenyl), PVK (poly(n-vinylcabazole)), ADN (9,10-di(naphthalene-2-yl)anthracene), TCTA(4,4',4''-Tris(carbazol-9-yl)-triphenylamine), TPBi(1,3,5-tris(N-phenylbenzimidazole-2-yl)benzene), TBADN(3-tert-butyl-9,10-di(naphth-2-yl)anthracene), DSA(distyrylarylene), CDBP (4,4'-bis(9-carbazolyl)-2,2''-dimethyl-biphenyl), MADN (2-Methyl-9,10-bis(naphthalen-2-yl)anthracene) You can use the back, but it is not limited to this.

[0226] In one embodiment, the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may each include a fluorescent material selected from the group consisting of spiro-DPVBi, spiro-6P, distyryl-benzene (DSB), distyryl-arylene (DSA), polyfluorene (PFO) polymers, and poly(p-phenylene vinylene) polymers. In another embodiment, the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may each include a phosphorescent material including an organometallic complex such as (4,6-F2ppy)2Irpic. The first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may each include a material other than the exemplified materials.

[0227] As described above, at least one of the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) emits blue light in a different wavelength range from at least another one of the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3). In one embodiment, in order to emit blue light in a different wavelength range, the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may include the same material, and a method of controlling a resonance distance may be used. Alternatively, in order to emit blue light of different wavelength ranges, at least one of the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) and at least another one of the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may include different materials.

[0228] However, the embodiments are not limited thereto. For example, the blue light emitted by each of the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may all have a peak wavelength of 440 nm to 480 nm, and may be made of the same material.

[0229] In another embodiment, at least one of the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may emit first blue light having a first peak wavelength, another one of the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may emit second blue light having a second peak wavelength different from the first peak wavelength, and the remaining one of the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may emit third blue light having a third peak wavelength different from the first peak wavelength and the second peak wavelength.

[0230] In one embodiment, the range of any one of the first peak wavelength, the second peak wavelength, and the third peak wavelength may be greater than or equal to 440 nm and less than or equal to 460 nm. The range of another one of the first peak wavelength, the second peak wavelength, and the third peak wavelength may be greater than or equal to 460 nm and less than or equal to 470 nm, and the range of the remaining one of the first peak wavelength, the second peak wavelength, and the third peak wavelength may be greater than or equal to 470 nm and less than or equal to 480 nm.

[0231] In one embodiment, the light emitting layer (OL) emits blue light (LE) and may include a long wavelength component, a medium wavelength component, and a short wavelength component. Accordingly, the light emitting layer (OL) can emit blue light having a more widely distributed emission peak as the light emitting layer (LE), thereby improving color visibility at a side viewing angle of the display panel (110).

[0232] The light emitting element (EL) of the tandem structure described above has the advantage of increased light efficiency and improved lifespan of the display device (100) compared to a light emitting element of a non-tandem structure.

[0233] In one embodiment, at least one of the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may emit light of a third color, for example, blue light, and at least another one of the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may emit light of a second color, for example, green light. A peak wavelength of the blue light emitted by at least one of the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may range from 440 nm to 480 nm or from 460 nm to 480 nm. The peak wavelength of green light emitted by at least one of the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may range from 510 nm to 550 nm.

[0234] For example, one of the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may be a green light-emitting layer that emits green light, and the other two of the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may be blue light-emitting layers that emit blue light. When the other two of the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) are blue light-emitting layers, the peak wavelength ranges of the blue light emitted by the two blue light-emitting layers may be the same as or different from each other.

[0235] In another embodiment, the light LE emitted from the light-emitting layer (OL) may be a mixed light in which a first component (LE1) of blue light and a second component (LE2) of green light are mixed. For example, when the first component (LE1) is a deep blue light and the second component (LE2) is a green light, the light LE may be a sky blue light. Similar to the embodiments described above, the light LE emitted from the light-emitting layer (OL) is a mixed light of blue light and green light, and includes a long wavelength component and a short wavelength component. Accordingly, the light emitting layer (OL) may emit blue light having a more widely distributed emission peak as the light LE, thereby improving color visibility at a side viewing angle. In addition, when the second component (LE2) of the emitted light (LE) is green light, the green light component of the light provided externally from the display device (100) can be supplemented, and thus the color reproducibility of the display device (100) can be improved.

[0236] In one embodiment, the green light-emitting layer among the first light-emitting material layer (EML1), the second light-emitting material layer (EML2), and the third light-emitting material layer (EML3) may include a host and a dopant. The hosts of the green emission layer are Alq3 (tris(8-hydroxyquinolino)aluminum), CBP (4,4'-bis(N-carbazolyl)-1,1'-biphenyl), PVK (poly(n-vinylcabazole)), ADN (9,10-di(naphthalene-2-yl)anthracene), TCTA(4,4',4''-Tris(carbazol-9-yl)-triphenylamine), TPBi(1,3,5-tris(N-phenylbenzimidazole-2-yl)benzene), TBADN(3-tert-butyl-9,10-di(naphth-2-yl)anthracene), DSA(distyrylarylene), CDBP (4,4'-bis(9-carbazolyl)-2,2''-dimethyl-biphenyl), MADN(2-Methyl-9,10-bis(naphthalen-2-yl)anthracene) may be, but is not limited to. The dopant of the green light-emitting layer is a fluorescent material or phosphorescent material containing Alq3(tris-(8-hydroyquinolato) aluminum(III)), such as Ir(ppy)3(fac tris(2-phenylpyridine)iridium), Ir(ppy)2(acac)(Bis(2-phenylpyridine)(acetylacetonate)iridium(III)), Ir(mpyp)3(2-phenyl-4-methyl-pyridine iridium), etc., but is not limited to these.

[0237] The first charge generation layer (CGL1) may be positioned between the first stack (ST1) and the second stack (ST2). The first charge generation layer (CGL1) may inject charges into each light-emitting layer (OL). The first charge generation layer (CGL1) may control a charge balance between the first stack (ST1) and the second stack (ST2). The first charge generation layer (CGL1) may include an n-type charge generation layer (CGL11) and a p-type charge generation layer (CGL12). The p-type charge generation layer (CGL12) may be disposed on the n-type charge generation layer (CGL11) and may be positioned between the n-type charge generation layer (CGL11) and the second stack (ST2).

[0238] The first charge generation layer (CGL1) may have a structure in which an n-type charge generation layer (CGL11) and a p-type charge generation layer (CGL12) are in contact with each other. The n-type charge generation layer (CGL11) may be closer to the first electrode (AE) of the light-emitting element (EL) than the p-type charge generation layer (CGL12). The p-type charge generation layer (CGL12) may be closer to the second electrode (CE) of the light-emitting element (EL) than the n-type charge generation layer (CGL11). The n-type charge generation layer (CGL11) may supply electrons to the first light-emitting material layer (EML1) adjacent to the first electrode (AE), and the p-type charge generation layer (CGL12) may supply holes to the second light-emitting material layer (EML2) included in the second stack (ST2). By placing a first charge generation layer (CGL1) between a first stack (ST1) and a second stack (ST2) to provide charges to the light-emitting material layer of each stack, the light-emitting efficiency of the light-emitting element (EL) can be increased and the driving voltage can be lowered.

[0239] The first stack (ST1) may be positioned on the first electrodes (AE) of the light-emitting elements (EL) arranged in the light-emitting areas (EA). The first stack (ST1) may further include a first hole transport layer (HTL1), a first electron blocking layer (BIL1), and a first electron transport layer (ETL1).

[0240] The first hole transport layer (HTL1) may be positioned on the first electrodes (AE) of the light-emitting elements (EL). The first hole transport layer (HTL1) facilitates the transport of holes and may include a hole transport material. The hole transport material may include, but is not limited to, carbazole derivatives such as N-phenylcarbazole and polyvinylcarbazole, fluorene derivatives, triphenylamine derivatives such as TPD (N,N'-bis(3-methylphenyl)-N,N'-diphenyl-[1,1-biphenyl]-4,4'-diamine), TCTA (4,4',4"-tris(N-carbazolyl)triphenylamine), NPB (N,N'-di(1-naphthyl)-N,N'-diphenylbenzidine), TAPC (4,4′-Cyclohexylidene bis[N,N-bis(4-methylphenyl)benzenamine]), etc.

[0241] The first electron blocking layer (BIL1) may be positioned on the first hole transport layer (HTL1). For example, the first electron blocking layer (BIL1) may be positioned between the first hole transport layer (HTL1) and the first light-emitting material layer (EML1). The first electron blocking layer (BIL1) may include a hole transport material and a metal or a metal compound to prevent electrons generated in the first light-emitting material layer (EML1) from flowing to the first hole transport layer (HTL1). In one embodiment, the first hole transport layer (HTL1) and the first electron blocking layer (BIL1) may also be formed as a single layer in which respective materials are mixed.

[0242] The first electron transport layer (ETL1) may be positioned on the first light-emitting material layer (EML1). For example, the first electron transport layer (ETL1) may be positioned between the first charge generation layer (CGL1) and the first light-emitting material layer (EML1). In one embodiment, the first electron transport layer (ETL1) is Alq3 (Tris(8-hydroxyquinolinato)aluminum), TPBi (1,3,5-Tri(1-phenyl-1H-benzo[d]imidazol-2-yl)phenyl), BCP (2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline), Bphen(4,7-Diphenyl-1,10-phenanthroline), TAZ(3-(4-Biphenylyl)-4-phenyl-5-tert-butylphenyl-1,2,4-triazole), NTAZ(4-(Naphthalen-1-yl)-3,5-diphenyl-4H-1,2,4-triazole), tBu-PBD (2-(4-Biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole), Electron transport materials may include, but are not limited to, BAlq (Bis(2-methyl-8-quinolinolato-N1,O8)-(1,1'-Biphenyl-4-olato)aluminum), Bebq2 (berylliumbis(benzoquinolin-10-olate), ADN (9,10-di(naphthalene-2-yl)anthracene) and mixtures thereof.

[0243] The second stack (ST2) may be positioned on the first charge generation layer (CGL1). The second stack (ST2) may further include a second hole transport layer (HTL2), a second electron blocking layer (BIL2), and a second electron transport layer (ETL2).

[0244] The second hole transport layer (HTL2) may be positioned on the first charge generation layer (CGL1). The second hole transport layer (HTL2) may be formed of the same material as the first hole transport layer (HTL1), or may include one or more materials selected from the materials exemplified as materials included in the first hole transport layer (HTL1). The second hole transport layer (HTL2) may be formed of a single layer or multiple layers.

[0245] The second electron blocking layer (BIL2) may be positioned on the second hole transport layer (HTL2). For example, the second electron blocking layer (BIL2) may be positioned between the second hole transport layer (HTL2) and the first light-emitting material layer (EML1). The second electron blocking layer (BIL2) may be formed of the same material and structure as the first electron blocking layer (BIL1), or may include one or more materials selected from the materials exemplified as the materials included in the first electron blocking layer (BIL1).

[0246] The second electron transport layer (ETL2) may be positioned on the second light-emitting material layer (EML2). For example, the second electron transport layer (ETL2) may be positioned between the second charge generation layer (CGL2) and the second light-emitting material layer (EML2). The second electron transport layer (ETL2) may be formed of the same material and the same structure as the first electron transport layer (ETL1), or may include one or more materials selected from the materials exemplified as the materials included in the first electron transport layer (ETL1). The second electron transport layer (ETL2) may be formed of a single layer or multiple layers.

[0247] The second charge generation layer (CGL2) may be positioned on the second stack (ST2). For example, the second charge generation layer (CGL2) may be positioned between the second stack (ST2) and the third stack (ST3). The second charge generation layer (CGL2) may have the same structure as the first charge generation layer (CGL1). For example, the second charge generation layer (CGL2) may include an n-type charge generation layer (CGL21) and a p-type charge generation layer (CGL22). The p-type charge generation layer (CGL22) may be positioned on the n-type charge generation layer (CGL21).

[0248] The second charge generation layer (CGL2) may be formed in a structure in which an n-type charge generation layer (CGL21) and a p-type charge generation layer (CGL22) are in contact with each other. The first charge generation layer (CGL1) and the second charge generation layer (CGL2) may be formed of the same material or may be formed of different materials.

[0249] The third stack (ST3) may be positioned on the second charge generation layer (CGL2). The third stack (ST3) may further include a third hole transport layer (HTL3) and a third electron transport layer (ETL3).

[0250] The third hole transport layer (HTL3) may be positioned on the second charge generation layer (CGL2). The third hole transport layer (HTL3) may be formed of the same material as the first hole transport layer (HTL1), or may include one or more materials selected from the materials exemplified as materials included in the first hole transport layer (HTL1). The third hole transport layer (HTL3) may be formed of a single layer or multiple layers. When the third hole transport layer (HTL3) is formed of multiple layers, each layer may include different materials.

[0251] The third electron transport layer (ETL3) may be positioned on the third light-emitting material layer (EML3). For example, the third electron transport layer (ETL3) may be positioned between the second electrode (CE) of the light-emitting element (EL) and the third light-emitting material layer (EML3). The third electron transport layer (ETL3) may be formed of the same material and the same structure as the first electron transport layer (ETL1), or may include one or more materials selected from the materials exemplified as materials included in the first electron transport layer (ETL1). The third electron transport layer (ETL3) may be formed of a single layer or multiple layers. When the third electron transport layer (ETL3) is formed of multiple layers, each layer may include different materials.

[0252] Although not shown in FIG. 13, a hole injection layer may be further positioned between the first electrode (AE) and the first stack (ST1) of each of the light emitting elements (EL), between the first charge generation layer (CGL1) and the second stack (ST2), and between the second charge generation layer (CGL2) and the third stack (ST3). The hole injection layer may serve to more smoothly inject holes into the first light emitting material layer (EML1), the second light emitting material layer (EML2), and the third light emitting material layer (EML3). In one embodiment, the hole injection layer may be formed of, but is not limited to, one or more selected from the group consisting of cupper phthalocyanine (CuPc), poly(3,4)-ethylenedioxythiophene (PEDOT), polyaniline (PANI), and N,N-dinaphthyl-N,N'-diphenyl benzidine (NPD).

[0253] In addition, an electron injection layer may be further positioned between the first stack (ST1) and the first charge generation layer (CGL1), between the second stack (ST2) and the second charge generation layer (CGL2), and between the third electron transport layer (ETL3) and the second electrode (CE) of the light emitting elements (EL). The electron injection layer serves to facilitate the injection of electrons, and may be formed of, but is not limited to, Alq3 (tris(8-hydroxyquinolino)aluminum), PBD, TAZ, spiro-PBD, BAlq, or SAlq. In addition, the electron injection layer may be a metal halide compound, and may be formed of, but is not limited to, any one or more selected from the group consisting of, for example, MgF2, LiF, NaF, KF, RbF, CsF, FrF, LiI, NaI, KI, RbI, CsI, FrI, and CaF2. Additionally, the electron injection layer may include a lanthanide material such as Yb, Sm, or Eu. Alternatively, the electron injection layer may include both a metal halide material and a lanthanide material, such as RbI:Yb or KI:Yb. When the electron injection layer includes both a metal halide material and a lanthanide material, the electron injection layer may be formed by co-deposition of the metal halide material and the lanthanide material.

[0254] In one embodiment, the light-emitting layer (OL) may not include a red light-emitting material layer, and thus may not emit light of the third color, such as red light. For example, the emitted light (LE) may not include a light component having a peak wavelength in the range of about 610 nm to about 650 nm, and the emitted light (LE) may only include a light component having a peak wavelength in the range of about 440 nm to 550 nm.

[0255] Fig. 14 is a plan view showing a second color filter (CF2) according to one embodiment. For example, Fig. 14 shows a modified embodiment of the second color filter (CF2) of Figs. 4 and 7.

[0256] Fig. 15 is a cross-sectional view showing a display panel (110) according to one embodiment. For example, Fig. 15 shows a cross-section of a first pixel (PX1) including a second color filter (CF2) of Fig. 14 (for example, a cross-section of the first pixel (PX1) according to one embodiment, corresponding to the line X1 to X1' of Fig. 4), and shows a modified embodiment of the second light-blocking pattern (LBP2) of Fig. 10. In describing the embodiments disclosed hereafter, a redundant description of a configuration substantially the same as or similar to at least one embodiment described above will be omitted.

[0257] Referring to FIGS. 14 and 15, each second shading pattern (LBP2) may further include a second color filter (CF2). For example, the second pattern (LBP2b) of the second shading pattern (LBP2) may have a triple-layer structure including a first color filter (CF1), a second color filter (CF2), and a third color filter (CF3) that overlap each other at positions where each second shading pattern (LBP2) is provided. Accordingly, reflected light (for example, the second reflected light (L2) of FIG. 10) incident on the second shading pattern (LBP2) can be effectively blocked.

[0258] Fig. 16 is a cross-sectional view showing a display panel (110) according to one embodiment. For example, Fig. 16 shows a cross-section of a first pixel (PX1) according to one embodiment, corresponding to lines X1 to X1' of Fig. 4, and shows an embodiment different from the previously described embodiments with respect to a color filter layer (CFL).

[0259] Referring to FIG. 16, the first color filter (CF1) may be individually patterned to correspond to the first light-emitting area (EA1). Similarly, the second color filter (CF2) may be individually patterned to correspond to the second light-emitting area (EA2), and the third color filter (CF3) may be individually patterned to correspond to the third light-emitting area (EA3).

[0260] The first shading pattern (LBP1) may include a first black matrix pattern (BM1) arranged in a non-emission area (NEA). The second pattern (LBP2b) of the second shading pattern (LBP2) may include a second black matrix pattern (BM2) arranged in each of the second shading pattern (LBP2) areas. For example, at least one second shading pattern (LBP2) including a second black matrix pattern (BM2) may be arranged in each of the first emitting area (EA1), the second emitting area (EA2), and the third emitting area (EA3).

[0261] In one embodiment, the first black matrix pattern (BM1) and the second black matrix pattern (BM2) may be patterns formed simultaneously using the same material, and may be separated from each other. For example, the second black matrix pattern (BM2) may be disposed separately from the first black matrix pattern (BM1) within the color filter layer (CFL) on which the first black matrix pattern (BM1) is provided, and may include the same material as the first black matrix pattern (BM1). In one embodiment, the first black matrix pattern (BM1) and the second black matrix pattern (BM2) may be formed of an organic film such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin, and may include an inorganic black pigment such as carbon black or an organic black pigment.

[0262] Fig. 17 is a cross-sectional view showing a display panel (110) according to one embodiment. For example, Fig. 17 shows a cross-section of a first pixel (PX1) according to each embodiment corresponding to lines X1 to X1' of Fig. 4, and shows embodiments that are different from the embodiments described above in relation to the second light-blocking pattern (LBP2).

[0263] Referring to FIG. 17, each second shading pattern (LBP2) may include a colored spacer pattern (CS) (for example, a black colored column spacer pattern) arranged on one surface of the low refractive layer (LRL). For example, the second pattern (LBP2b) of the second shading pattern (LBP2) may include a colored spacer pattern (CS) provided in an area where each second shading pattern (LBP2) is arranged on one surface of the low refractive layer (LRL) facing the light conversion layer (WCL).

[0264] In one embodiment, the second blocking patterns (LBP2) disposed in the second light-emitting area (EA2) and the third light-emitting area (EA3) may also have substantially the same structure as the second blocking pattern (LBP2) disposed in the first light-emitting area (EA1). For example, each of the second blocking patterns (LBP2) disposed in the second light-emitting area (EA2) and the third light-emitting area (EA3) may include a colored spacer pattern (CS).

[0265] In one embodiment, a plurality of color filters (CF) may not be arranged to overlap each other in the area where each second shading pattern (LBP2) is arranged. For example, in the position where each second shading pattern (LBP2) is provided within the emission area (EA) of each pixel (PX), a color filter (CF) corresponding to the emission color of the corresponding pixel (PX) may be arranged, and color filters (CF) of other colors may not be arranged.

[0266] Fig. 18 is a cross-sectional view showing a display panel (110) according to one embodiment. Fig. 19 is a cross-sectional view showing a display panel (110) according to one embodiment. Fig. 20 is a cross-sectional view showing a display panel (110) according to one embodiment. For example, Figs. 18 to 20 show cross-sections of a first pixel (PX1) according to each embodiment corresponding to lines X1 to X1' of Fig. 4, and show embodiments that are different from the embodiments described above in relation to the second light-blocking pattern (LBP2).

[0267] Referring to FIGS. 18 to 20, each second light-shielding pattern (LBP2) may further include at least one reflective film. For example, as illustrated in FIG. 18, the second light-shielding pattern (LBP2) may further include a first reflective film (RFL1) disposed on one surface (e.g., a lower surface) of the first pattern (LBP2a) facing the light-emitting element layer (LEL), and a second reflective film (RFL2) disposed on one surface (e.g., a lower surface) of the second pattern (LBP2b) facing the light-emitting element layer (LEL).

[0268] In one embodiment, the second shading pattern (LBP2) may include only one of the first reflective film (RFL1) and the second reflective film (RFL2). For example, the second shading pattern (LBP2) may include the first reflective film (RFL1) and not the second reflective film (RFL2), as illustrated in FIG. 19. Alternatively, the second shading pattern (LBP2) may include the second reflective film (RFL2) and not the first reflective film (RFL1), as illustrated in FIG. 20.

[0269] In one embodiment, the second blocking patterns (LBP2) disposed in the second light-emitting area (EA2) and the third light-emitting area (EA3) may also have substantially the same structure as the second blocking pattern (LBP2) disposed in the first light-emitting area (EA1). For example, each of the second blocking patterns (LBP2) disposed in the second light-emitting area (EA2) and the third light-emitting area (EA3) may further include at least one of the first reflective film (RFL1) and the second reflective film (RFL2).

[0270] Since the second light-shielding pattern (LBP2) further includes at least one of the first reflective film (RFL1) and the second reflective film (RFL2), the light efficiency of the pixel (PX) can be improved. For example, since light reflected by at least one of the first reflective film (RFL1) and the second reflective film (RFL2) is recycled or reused, the light efficiency of the pixels (PX) can be improved.

[0271] Fig. 21 is a cross-sectional view showing a display panel (110) according to one embodiment. Fig. 22 is a cross-sectional view showing a display panel (110) according to one embodiment. For example, Figs. 21 and 22 show cross-sections of a first pixel (PX1) according to each embodiment corresponding to lines X1 to X1' of Fig. 4, and show embodiments that are different from the embodiments described above in relation to the second light-blocking pattern (LBP2).

[0272] In FIGS. 21 and 22, only the second shading pattern (LBP2) disposed in the first light-emitting area (EA1) is illustrated, but the second shading patterns (LBP2) disposed in the second light-emitting area (EA2) and the third light-emitting area (EA3) may also have substantially the same structure as the second shading pattern (LBP2) disposed in the first light-emitting area (EA1).

[0273] Referring to FIGS. 21 and 22, each second shading pattern (LBP2) may include only one of the first pattern (LBP2a) and the second pattern (LBP2b). For example, the second shading pattern (LBP2) may include the first pattern (LBP2a) and not the second pattern (LBP2b), as illustrated in FIG. 21. Alternatively, the second shading pattern (LBP2) may include the second pattern (LBP2b) and not the first pattern (LBP2a), as illustrated in FIG. 22.

[0274] Each of the embodiments of FIGS. 4 to 22 may be applied alone to the display panel (110) or may be combined with at least one other embodiment. For example, each second light-shielding pattern (LBP2) may include at least one of the first pattern (LBP2a) and the second pattern (LBP2b).

[0275] Each first pattern (LBP2a) may include a second bank (BNK2). A first reflective film (RFL1) may or may not be disposed under each first pattern (LBP2a).

[0276] Each second pattern (LBP2b) may have a structure in which at least two color filters (CF) are stacked, include a second black matrix pattern (BM2), or include a colored spacer pattern (CS). A second reflective film (RFL2) may or may not be disposed under each second pattern (LBP2b).

[0277] In addition, although embodiments in which the same number of second blocking patterns (LBP2) are arranged in the first light-emitting area (EA1), the second light-emitting area (EA2), and the third light-emitting area (EA3) are disclosed in FIGS. 4 to 22, the embodiments are not limited thereto. For example, the second blocking patterns (LBP2) may be arranged in only some of the first light-emitting area (EA1), the second light-emitting area (EA2), and the third light-emitting area (EA3). Alternatively, different numbers of second blocking patterns (LBP2) may be arranged in the first light-emitting area (EA1), the second light-emitting area (EA2), and / or the third light-emitting area (EA3). For example, the number or size of the second blocking patterns (LBP2) arranged in the light-emitting areas (EA) may be differentiated in consideration of the light efficiency, white balance, or visibility of the pixels (PX).

[0278] As described above, the display device (100) according to the embodiments may include second light-shielding patterns (LBP2) arranged in at least some of the light-emitting areas (EA). Accordingly, the external light reflectance of the display device (100) may be reduced, and the visibility of the image displayed in the display area (DA) may be improved.

[0279] Although embodiments of the present invention have been described with reference to the attached drawings, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without altering the technical spirit or essential characteristics of the present invention. Therefore, the embodiments described above should be understood to be illustrative in all respects and not restrictive.

Claims

1. Substrate; A light-emitting element layer including light-emitting elements arranged on the substrate; A color filter layer disposed on the light-emitting element layer, the color filter layer including color filters disposed in each light-emitting region and a first light-blocking pattern disposed in a non-light-emitting region surrounding the light-emitting regions; and A display device comprising second light-shielding patterns disposed on the light-emitting element layer and disposed inside the light-emitting areas.

2. In paragraph 1, The second shading patterns are arranged at a position spaced apart from the first shading pattern, A display device, wherein at least one second shading pattern among the second shading patterns is arranged inside each of the above light-emitting areas.

3. In paragraph 1, The above light-emitting regions include a first light-emitting region emitting light of a first color, a second light-emitting region emitting light of a second color, and a third light-emitting region emitting light of a third color, A display device, wherein the color filters include at least a first color filter disposed in the first light-emitting region, at least a second color filter disposed in the second light-emitting region, and at least a third color filter disposed in the third light-emitting region.

4. In paragraph 3, A display device, wherein the second shading patterns include color filters of at least two colors arranged to overlap each other at the positions where each of the second shading patterns is arranged.

5. In paragraph 4, The first color light, the second color light, and the third color light are red light, green light, and blue light, respectively. The first color filter, the second color filter, and the third color filter are a red color filter, a green color filter, and a blue color filter, respectively. A display device, wherein each of the second shading patterns includes the first color filter and the third color filter.

6. In paragraph 5, A display device, wherein each of the second shading patterns further includes the second color filter.

7. In paragraph 3, A display device, wherein the first shading pattern includes the first color filter, the second color filter, and the third color filter, which are arranged to overlap each other in the non-emitting area.

8. In paragraph 1, A display device, wherein the first shading pattern includes a first black matrix pattern arranged in the non-light-emitting area.

9. In paragraph 8, A display device, wherein the second shading patterns include at least one second black matrix pattern arranged inside each of the light-emitting areas.

10. In paragraph 1, The color filter layer further includes a low-refractive layer covering one surface of the color filters facing the light-emitting element layer, A display device, wherein the second shading patterns include colored spacer patterns arranged on one surface of the low-refractive-index layer.

11. In paragraph 1, A display device further comprising a light conversion layer disposed between the light emitting element layer and the color filter layer, the light emitting elements disposed in the light emitting areas and a first bank disposed in the non-light emitting area.

12. In paragraph 11, The second shading patterns are arranged in the light conversion layer and include at least one second bank disposed inside each of the light emitting areas, separated from the first bank. A display device wherein the first bank and the second bank include the same material.

13. In paragraph 11, The above light-emitting regions include a first light-emitting region emitting light of a first color, a second light-emitting region emitting light of a second color, and a third light-emitting region emitting light of a third color, A display device, wherein the light-transmitting members include a first light-transmitting member arranged in the first light-emitting area, a second light-transmitting member arranged in the second light-emitting area, and a third light-transmitting member arranged in the third light-emitting area.

14. In paragraph 13, The above light emitting elements emit light of the third color, The first light-transmitting member includes a first wavelength shifter that converts light of the third color into light of the first color, A display device, wherein the second light-transmitting member includes a second wavelength shifter that converts light of the third color into light of the second color.

15. In paragraph 13, A display device, wherein the first light-transmitting member, the second light-transmitting member, and the third light-transmitting member include a light diffusing agent.

16. In paragraph 11, Each of the above second shading patterns, A first pattern disposed inside the light conversion layer; and A display device comprising at least one of a second pattern disposed inside the color filter layer or between the color filter layer and the light conversion layer.

17. In paragraph 16, Each of the above second shading patterns, A first reflective film disposed on one side of the first pattern facing the light-emitting element layer; and A display device further comprising at least one second reflective film disposed on one surface of the second pattern facing the light-emitting element layer.

18. Substrate; A light-emitting element layer including light-emitting elements arranged on the substrate; A light conversion layer disposed on the light emitting element layer, the light conversion layer including light-transmitting members disposed in light emitting areas and a first bank disposed in a non-light emitting area surrounding the light emitting areas; A color filter layer disposed on the light conversion layer, the color filter layer including color filters disposed in the light-emitting areas and a first light-blocking pattern disposed in the non-light-emitting area; and A display device comprising second light-blocking patterns disposed on at least one of the light conversion layer and the color filter layer and disposed inside the light-emitting areas.

19. In paragraph 18, A display device, wherein each of the second shading patterns includes a second bank disposed inside the light conversion layer and separated from the first bank.

20. In paragraph 18, A display device, wherein each of the second shading patterns comprises color filters of at least two colors arranged inside the color filter layer and overlapping each other, a black matrix pattern arranged inside the color filter layer and separated from the first shading pattern, or a colored spacer pattern arranged on one surface of a low-refractive-index layer covering one surface of the color filters.

Images