WO2024253380A1 - 차량용 표시 장치 및 이를 포함하는 차량 - Google Patents
차량용 표시 장치 및 이를 포함하는 차량 Download PDFInfo
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- WO2024253380A1 WO2024253380A1 PCT/KR2024/007337 KR2024007337W WO2024253380A1 WO 2024253380 A1 WO2024253380 A1 WO 2024253380A1 KR 2024007337 W KR2024007337 W KR 2024007337W WO 2024253380 A1 WO2024253380 A1 WO 2024253380A1
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- light
- metal oxide
- oxide layer
- display device
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
- B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
- B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
- B60K35/22—Display screens
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/126—Shielding, e.g. light-blocking means over the TFTs
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/805—Electrodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/873—Encapsulations
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/873—Encapsulations
- H10K59/8731—Encapsulations multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
- H10K59/8792—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
- B60K2360/1523—Matrix displays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
- B60K2360/20—Optical features of instruments
- B60K2360/25—Optical features of instruments using filters
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/351—Thickness
Definitions
- the present invention relates to a vehicle display device and a vehicle including the same.
- the display devices may be flat panel display devices such as a liquid crystal display, a field emission display, a light emitting display, etc.
- the light emitting display device may include an organic light emitting display device including an organic light emitting diode element as a light emitting element, or a light emitting diode display device including an inorganic light emitting diode element such as an LED (Light Emitting Diode) as a light emitting element.
- a polarizing plate may be provided to prevent outgassing from occurring in the organic film inside the display device due to ultraviolet rays incident from the outside.
- the polarizing plate may be attached to the outside of the display device, but the manufacturing cost and time required for the process for attaching the polarizing plate may reduce productivity. Therefore, research on vehicle display devices that can omit the polarizing plate is continuing.
- the problem to be solved by the present invention is to provide a vehicle display device capable of blocking ultraviolet rays without a polarizing plate and a vehicle including the same.
- a vehicle display device may include a substrate, a light-emitting element layer disposed on the substrate and including a pixel electrode, an organic film layer, and a common electrode, a pixel definition film disposed on the substrate and including a plurality of openings exposing a portion of the pixel electrode, an encapsulation layer disposed on the light-emitting element layer, a metal oxide layer disposed on the encapsulation layer and overlapping the pixel definition film, a light-shielding layer disposed on the metal oxide layer and overlapping the metal oxide layer, and a color filter layer disposed on the light-shielding layer and the encapsulation layer.
- the above metal oxide layer can be in contact with the upper surface of the sealing layer and the lower surface of the light-shielding layer.
- the above metal oxide layer may include at least one selected from titanium oxide, zinc oxide, and tantalum oxide.
- the thickness of the above metal oxide layer can be 10 to 10,000 nm.
- the above metal oxide layer may include a plurality of aperture holes overlapping the plurality of openings.
- the size of the aperture of the metal oxide layer may be the same as the size of the aperture of the pixel defining film.
- the size of the aperture of the metal oxide layer may be larger than the size of the aperture of the pixel defining film, and the width of the metal oxide layer may be smaller than the width of the pixel defining film.
- the side of the metal oxide layer is positioned closer to the side of the light-shielding layer, and the light-shielding layer can cover the upper surface and the side of the metal oxide layer.
- the above-described light-shielding layer includes a plurality of holes overlapping the plurality of openings, and the size of the opening holes of the metal oxide layer may be larger than the size of the holes of the light-shielding layer.
- the above-described light-shielding layer includes a plurality of holes overlapping the plurality of openings, and the size of the opening holes of the metal oxide layer may be smaller than the size of the holes of the light-shielding layer.
- the side of the metal oxide layer protrudes outward more than the side of the light-shielding layer, and the width of the metal oxide layer may be larger than the width of the light-shielding layer.
- the above-described light-shielding layer includes a plurality of holes overlapping the plurality of openings, and the size of the opening holes of the metal oxide layer may be the same as the size of the holes of the light-shielding layer.
- the side edges of the above metal oxide layer can be mutually aligned and coincide with the side edges of the above light-shielding layer.
- the pixel defining film may include a plurality of pixel openings arranged between the pixel electrodes, and the light-blocking layer may include a plurality of pattern openings overlapping the plurality of pixel openings.
- the side edges of the metal oxide layer are aligned and coincide with the side edges of the pixel defining film, and the width of the metal oxide layer can be the same as the width of the pixel defining film.
- a vehicle includes a dashboard, and a vehicle display device disposed on the dashboard to display information
- the vehicle display device may include a substrate, a light-emitting element layer disposed on the substrate and including a pixel electrode, an organic film layer, and a common electrode, a pixel defining film disposed on the substrate and including a plurality of openings exposing a portion of the pixel electrode, an encapsulating layer disposed on the light-emitting element layer, a metal oxide layer disposed in the encapsulating layer and overlapping the pixel defining film, a light-shielding layer disposed on the encapsulating layer and overlapping the metal oxide layer, and a color filter layer disposed on the light-shielding layer and the encapsulating layer.
- the above encapsulating layer may include a first encapsulating layer disposed on the light-emitting element layer, a second encapsulating layer disposed on the first encapsulating layer, and a third encapsulating layer disposed on the second encapsulating layer.
- the above metal oxide layer can be disposed between the second sealing layer and the third sealing layer.
- the metal oxide layer may be disposed between the first sealing layer and the second sealing layer.
- the above metal oxide layer may include at least one selected from titanium oxide, zinc oxide, and tantalum oxide.
- a vehicle display device and a vehicle including the same can reduce light in the ultraviolet wavelength band incident from the outside from reaching a pixel defining film by disposing a metal oxide layer that absorbs light in the ultraviolet wavelength band between a sealing layer and a light shielding layer. Accordingly, deterioration of an organic film layer and oxidation of a common electrode due to outgassing of the pixel defining film can be reduced, thereby reducing a pixel shrinkage phenomenon.
- Figure 1 is a perspective view showing a display device according to one embodiment.
- Figure 2 is a cross-sectional view of the display device of Figure 1 viewed from the side.
- FIG. 3 is a plan view showing a display layer of a display device according to one embodiment.
- FIG. 4 is a plan view showing a display area of a display panel according to one embodiment.
- Figure 5 is a plan view showing an enlarged view of area A of Figure 4.
- Figure 6 is a cross-sectional view taken along line X1-X1' of Figure 5.
- Figure 7 is a schematic diagram showing the incident path of external light.
- Figure 8 is a plan view showing pixels according to another embodiment.
- Figure 9 is a cross-sectional view taken along line X2-X2' of Figure 8.
- Figure 10 is a plan view showing pixels according to another embodiment.
- Fig. 11 is a cross-sectional view taken along line X3-X3' of Fig. 10.
- Fig. 12 is a cross-sectional view showing a display device according to another embodiment.
- Fig. 13 is a cross-sectional view showing a display device according to another embodiment.
- Fig. 14 is a cross-sectional view showing each light-emitting area of a display device according to one embodiment.
- Figure 15 is a plan view showing each light-emitting area of a display device according to one embodiment.
- Figure 16 is a cross-sectional view taken along line X4-X4' of Figure 15.
- FIG. 17 is a cross-sectional view showing a portion of a pixel aperture of a display device according to one embodiment.
- Fig. 18 is a schematic diagram of a case where a display device according to one embodiment is applied to a vehicle.
- first, second, etc. are used to describe various components, it is to be understood that these components are not limited by these terms. These terms are merely used to distinguish one component from another. Accordingly, it is to be understood that the first component referred to below may also be the second component within the technical concept of the present invention.
- Figure 1 is a perspective view showing a display device according to one embodiment.
- the display device (10) can display a moving image or a still image.
- the display device (10) can refer to all electronic devices that provide a display screen.
- the display device (10) can include a television, a laptop, a monitor, a billboard, the Internet of Things, a mobile phone, a smart phone, a tablet PC (Personal Computer), an electronic watch, a smart watch, a watch phone, a head-mounted display, a mobile communication terminal, an electronic notebook, an electronic book, a PMP (Portable Multimedia Player), a navigation system, a game console, a digital camera, a camcorder, a vehicle navigation system, a vehicle instrument panel, etc. that provide a display screen.
- the display device (10) can be a vehicle display device that can be equipped in a vehicle, but is not limited thereto.
- Examples of display devices (10) include inorganic light-emitting diode displays, organic light-emitting diode displays, quantum dot light-emitting diode displays, plasma displays, field emission displays, etc.
- display devices (10) include inorganic light-emitting diode displays, organic light-emitting diode displays, quantum dot light-emitting diode displays, plasma displays, field emission displays, etc.
- an organic light-emitting diode display device is exemplified, but the present invention is not limited thereto, and if the same technical idea is applicable, it can be applied to other display devices.
- the shape of the display device (10) can be modified in various ways.
- the display device (10) can have a shape similar to a square having a side in the first direction (DR1) and a side in the second direction (DR2).
- the corner where the side in the first direction (DR1) and the side in the second direction (DR2) meet can be formed to have a rounded shape to have a curvature, but is not limited thereto and can also be formed at a right angle.
- the planar shape of the display device (10) is not limited to a square and can be formed similarly to other polygons, circles, or ovals.
- the display device (10) may include a display area (DA) and a non-display area (NDA).
- the display area (DA) is an area where a screen can be displayed, and the non-display area (NDA) is an area where a screen is not displayed.
- the display area (DA) may be referred to as an active area, and the non-display area (NDA) may also be referred to as an inactive area.
- the display area (DA) may generally occupy the center of the display device (10).
- the display device (10) may include a display panel (100), a display driver (200), a circuit board (300), and a touch driver (400).
- the display panel (100) may include a main area (MA) and a sub area (SBA).
- the main area (MA) may include a display area (DA) including pixels that display an image, and a non-display area (NDA) arranged around the display area (DA).
- the display area (DA) may emit light from a plurality of light-emitting areas or a plurality of aperture areas.
- the display panel (100) may include a pixel circuit including switching elements, a pixel definition film defining a light-emitting area or an aperture area, and a self-light emitting element.
- the self-luminous element may include, but is not limited to, at least one of an organic light emitting diode (OLED) including an organic light emitting layer, a quantum dot LED including a quantum dot light emitting layer, an inorganic LED including an inorganic semiconductor, and a micro light emitting diode (Micro LED).
- OLED organic light emitting diode
- quantum dot LED including a quantum dot light emitting layer
- inorganic LED including an inorganic semiconductor
- Micro LED micro light emitting diode
- the non-display area (NDA) may be an outer area of the display area (DA).
- the non-display area (NDA) may be defined as an edge area of the main area (MA) of the display panel (100).
- the non-display area (NDA) may include a gate driver (not shown) that supplies gate signals to gate lines, and fan out lines (not shown) that connect the display driver (200) and the display area (DA).
- the sub-area (SBA) may be an area extending from one side of the main area (MA).
- the sub-area (SBA) may include a flexible material capable of bending, folding, rolling, etc. For example, when the sub-area (SBA) is bent, the sub-area (SBA) may overlap the main area (MA) in the thickness direction (the third direction (DR3)).
- the sub-area (SBA) may include a display driver (200) and a pad portion connected to a circuit board (300). In another embodiment, the sub-area (SBA) may be omitted, and the display driver (200) and the pad portion may be placed in a non-display area (NDA).
- NDA non-display area
- the display driver (200) can output signals and voltages for driving the display panel (100).
- the display driver (200) can supply data voltages to data lines.
- the display driver (200) can supply power voltage to a power line, and can supply a gate control signal to a gate driver.
- the display driver (200) can be formed as an integrated circuit (IC) and mounted on the display panel (100) using a COG (Chip on Glass) method, a COP (Chip on Plastic) method, or an ultrasonic bonding method.
- the display driver (200) can be placed in the sub-area (SBA) and can overlap the main area (MA) in the thickness direction by bending the sub-area (SBA).
- the display driver (200) can be mounted on a circuit board (300).
- the circuit board (300) may be attached to the pad portion of the display panel (100) using an anisotropic conductive film (ACF). Lead lines of the circuit board (300) may be electrically connected to the pad portion of the display panel (100).
- the circuit board (300) may be a flexible film such as a flexible printed circuit board, a printed circuit board, or a chip on film.
- Figure 2 is a cross-sectional view of the display device of Figure 1 viewed from the side.
- the display panel (100) may include a display layer (DU) and a color filter layer (CFL).
- the display layer (DU) may include a substrate (SUB), a thin film transistor layer (TFTL), a light emitting element layer (EML), and an encapsulation layer (TFEL).
- the substrate (SUB) may be a base substrate or a base member.
- the substrate (SUB) may be a flexible substrate capable of bending, folding, rolling, etc.
- the substrate (SUB) may include a polymer resin such as polyimide (PI), but is not limited thereto.
- the substrate (SUB) may include a glass material or a metal material.
- a thin film transistor layer may be disposed on a substrate (SUB).
- the thin film transistor layer (TFTL) may include a plurality of thin film transistors constituting pixel circuits of pixels.
- the thin film transistor layer (TFTL) may further include gate lines, data lines, power lines, gate control lines, fan out lines connecting the display driver (200) and the data lines, and lead lines connecting the display driver (200) and the pad portion.
- Each of the thin film transistors may include a semiconductor region, a source electrode, a drain electrode, and a gate electrode.
- the gate driver may include thin film transistors.
- a thin film transistor layer can be arranged in a display area (DA), a non-display area (NDA), and a sub-area (SBA).
- Thin film transistors, gate lines, data lines, and power lines of each pixel of the thin film transistor layer (TFTL) can be arranged in the display area (DA).
- Gate control lines and fan out lines of the thin film transistor layer (TFTL) can be arranged in the non-display area (NDA).
- Lead lines of the thin film transistor layer (TFTL) can be arranged in the sub-area (SBA).
- the light emitting element layer may be disposed on the thin film transistor layer (TFTL).
- the light emitting element layer may include a plurality of light emitting elements that emit light, including a first electrode, a second electrode, and a light emitting layer, and a pixel defining film that defines pixels.
- the plurality of light emitting elements of the light emitting element layer may be disposed in the display area (DA).
- the light emitting layer may be an organic light emitting layer including an organic material.
- the light emitting layer may include a hole transporting layer, an organic light emitting layer, and an electron transporting layer.
- TFTL thin film transistor of the thin film transistor layer
- the second electrode receives a cathode voltage
- holes and electrons may move to the organic light emitting layer through the hole transporting layer and the electron transporting layer, respectively, and may combine with each other in the organic light emitting layer to emit light.
- the light-emitting device may include a quantum dot light-emitting diode comprising a quantum dot light-emitting layer, an inorganic light-emitting diode comprising an inorganic semiconductor, or a micro light-emitting diode.
- the encapsulation layer (TFEL) can cover the upper surface and side surfaces of the light emitting element layer (EML) and protect the light emitting element layer (EML).
- the encapsulation layer (TFEL) can include at least one inorganic film and at least one organic film for encapsulating the light emitting element layer (EML).
- the color filter layer (CFL) may be arranged on the encapsulation layer (TFEL).
- the color filter layer (CFL) may include a plurality of color filters corresponding to each of a plurality of light-emitting regions. Each of the color filters may selectively transmit light of a specific wavelength and block or absorb light of a different wavelength.
- the color filter layer (CFL) may absorb a portion of light entering from the outside of the display device (10) to reduce reflected light due to external light. Therefore, the color filter layer (CFL) may prevent color distortion due to reflected external light.
- the display device (10) may not require a separate substrate for the color filter layer (CFL). Accordingly, the thickness of the display device (10) may be relatively small.
- FIG. 3 is a plan view showing a display layer of a display device according to one embodiment.
- the display layer (DU) may include a display area (DA) and a non-display area (NDA).
- DA display area
- NDA non-display area
- the display area (DA) may be arranged at the center of the display panel (100).
- a plurality of pixels (PX), a plurality of gate lines (GL), a plurality of data lines (DL), and a plurality of power lines (VL) may be arranged in the display area (DA).
- Each of the plurality of pixels (PX) may be defined as the smallest unit that emits light.
- a plurality of gate lines (GL) can supply gate signals received from a gate driver (210) to a plurality of pixels (PX).
- the plurality of gate lines (GL) can extend in a first direction (DR1) and be spaced apart from each other in a second direction (DR2) intersecting the first direction (DR1).
- a plurality of data lines (DL) can supply data voltages received from a display driver (200) to a plurality of pixels (PX).
- the plurality of data lines (DL) can extend in a second direction (DR2) and be spaced apart from each other in a first direction (DR1).
- a plurality of power lines (VL) can supply power voltages received from the display driver (200) to a plurality of pixels (PX).
- the power voltage can be at least one of a driving voltage, an initialization voltage, a reference voltage, and a low-potential voltage.
- the plurality of power lines (VL) can extend in a second direction (DR2) and be spaced apart from each other in a first direction (DR1).
- a non-display area may surround a display area (DA).
- a gate driver (210), fan out lines (FOL), and gate control lines (GCL) may be arranged in the non-display area (NDA).
- the gate driver (210) may generate a plurality of gate signals based on a gate control signal, and may sequentially supply the plurality of gate signals to a plurality of gate lines (GL) in a set order.
- Fan out lines (FOL) can extend from the display driver (200) to the display area (DA).
- the fan out lines (FOL) can supply data voltages received from the display driver (200) to a plurality of data lines (DL).
- a gate control line (GCL) can extend from the display driver (200) to the gate driver (210).
- the gate control line (GCL) can supply a gate control signal received from the display driver (200) to the gate driver (210).
- the sub-area (SBA) may include a display driving unit (200), a pad area (PA), and first and second touch pad areas (TPA1, TPA2).
- the display driver (200) can output signals and voltages for driving the display panel (100) to the fan out lines (FOL).
- the display driver (200) can supply a data voltage to the data line (DL) through the fan out lines (FOL).
- the data voltage can be supplied to a plurality of pixels (PX) and can control the brightness of the plurality of pixels (PX).
- the display driver (200) can supply a gate control signal to the gate driver (210) through the gate control line (GCL).
- the pad area (PA) may be arranged at an edge of the sub area (SBA).
- the pad area (PA) may be electrically connected to a circuit board (300) using a material such as an anisotropic conductive film or a Self Assembly Anisotropic Conductive Paste (SAP).
- the pad area (PA) may include a plurality of display pad units (DP).
- the plurality of display pad units (DP) may be connected to a graphic system through the circuit board (300).
- the plurality of display pad units (DP) may be connected to the circuit board (300) to receive digital video data and supply the digital video data to the display driver (200).
- FIG. 4 is a plan view showing a display area of a display panel according to one embodiment.
- the display panel (100) may include a plurality of pixels (PX) arranged in a first direction (DR1) and a second direction (DR2).
- Each of the pixels (PX) may have a rectangular, square, or rhombus-shaped planar shape.
- each of the pixels (PX) may have a square planar shape.
- the present invention is not limited thereto, and may have various shapes such as a polygon, circle, or oval on a planar surface.
- the pixels (PX) may emit a first light, other parts of the pixels (PX) may emit a second light, and remaining parts of the pixels (PX) may emit a third light.
- the first light may be light in a blue wavelength band
- the second light may be light in a red wavelength band
- the third light may be light in a green wavelength band.
- the red wavelength band may be a wavelength band of about 600 nm to 750 nm
- the green wavelength band may be a wavelength band of about 480 nm to 560 nm
- the blue wavelength band may be a wavelength band of about 370 nm to 460 nm, but the embodiments of the present specification are not limited thereto.
- some of the pixels (PX) may emit white light.
- Each of the pixels (PX) may include at least one of an organic light-emitting element including an organic material as a light-emitting element that emits light, an inorganic light-emitting element including an inorganic semiconductor, a quantum dot light-emitting element including a quantum dot light-emitting layer, and a micro light emitting diode (micro LED).
- an organic light-emitting element including an organic material as a light-emitting element that emits light an inorganic light-emitting element including an inorganic semiconductor
- a quantum dot light-emitting element including a quantum dot light-emitting layer a micro light emitting diode (micro LED).
- micro LED micro light emitting diode
- Fig. 5 is a plan view showing an enlarged view of area A of Fig. 4.
- Fig. 6 is a cross-sectional view taken along line X1-X1' of Fig. 5.
- Fig. 7 is a schematic diagram showing the incident path of external light.
- a display panel (100) of a display device may include a display layer (DU) and a color filter layer (CFL).
- the display layer (DU) may include a substrate (SUB), a thin film transistor layer (TFTL), a light emitting element layer (EML), and an encapsulation layer (TFEL).
- the display panel (100) may include a metal oxide layer (USL) on the encapsulation layer (TFEL), and a light-shielding layer (BM) disposed on the metal oxide layer (USL).
- Color filters (CF1, CF2, CF3) of the color filter layer (CFL) may be disposed on the light-shielding layer (BM).
- the substrate (SUB) may be a base substrate or a base member.
- the substrate (SUB) may be a flexible substrate capable of bending, folding, rolling, etc.
- the substrate (SUB) may include a polymer resin such as polyimide (PI), but is not limited thereto.
- the substrate (SUB) may include a glass material or a metal material.
- a thin film transistor layer may include a first buffer layer (BF1), a lower metal layer (BML), a second buffer layer (BF2), a thin film transistor (TFT), a gate insulating layer (GI), a first interlayer insulating layer (ILD1), a capacitor electrode (CPE), a second interlayer insulating layer (ILD2), a first connection electrode (CNE1), a first passivation layer (PAS1), a second connection electrode (CNE2), and a second passivation layer (PAS2).
- the first buffer layer (BF1) may be disposed on the substrate (SUB).
- the first buffer layer (BF1) may include an inorganic film capable of preventing the penetration of air or moisture.
- the first buffer layer (BF1) may include a plurality of inorganic films that are alternately laminated.
- the lower metal layer (BML) may be disposed on the first buffer layer (BF1).
- the lower metal layer (BML) may prevent light incident from below from being incident on the semiconductor layer (ACT) of the thin film transistor (TFT).
- the lower metal layer (BML) may be formed as a single layer or multiple layers made of, for example, one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.
- the second buffer layer (BF2) can cover the first buffer layer (BF1) and the lower metal layer (BML).
- the second buffer layer (BF2) can include an inorganic film that can prevent the penetration of air or moisture.
- the second buffer layer (BF2) can include a plurality of inorganic films that are alternately laminated.
- a thin film transistor may be disposed on the second buffer layer (BF2) and may constitute a pixel circuit of each of a plurality of pixels.
- the thin film transistor (TFT) may be a driving transistor or a switching transistor of the pixel circuit.
- the thin film transistor (TFT) may include a semiconductor layer (ACT), a source electrode (SE), a drain electrode (DE), and a gate electrode (GE).
- the semiconductor layer (ACT) may be disposed on the second buffer layer (BF2).
- the semiconductor layer (ACT) may overlap with the lower metal layer (BML) and the gate electrode (GE) in the thickness direction, and may be insulated from the gate electrode (GE) by a gate insulating layer (GI).
- a part of the semiconductor layer (ACT) may be a material of the semiconductor layer (ACT) that is conductive to form a source electrode (SE) and a drain electrode (DE).
- the gate electrode (GE) may be disposed on the gate insulating layer (GI).
- the gate electrode (GE) may overlap the semiconductor layer (ACT) with the gate insulating layer (GI) interposed therebetween.
- the gate insulating layer (GI) may be disposed on the semiconductor layer (ACT).
- the gate insulating layer (GI) may cover the semiconductor layer (ACT) and the second buffer layer (BF2), and may insulate the semiconductor layer (ACT) and the gate electrode (GE).
- the gate insulating layer (GI) may include a contact hole through which the first connection electrode (CNE1) passes.
- the first interlayer insulating layer (ILD1) can cover the gate electrode (GE) and the gate insulating layer (GI).
- the first interlayer insulating layer (ILD1) can include a contact hole through which the first connection electrode (CNE1) passes.
- the contact hole of the first interlayer insulating layer (ILD1) can be connected to the contact hole of the gate insulating layer (GI) and the contact hole of the second interlayer insulating layer (ILD2).
- the capacitor electrode (CPE) may be disposed on the first interlayer insulating layer (ILD1).
- the capacitor electrode (CPE) may overlap the gate electrode (GE) in the thickness direction.
- the capacitor electrode (CPE) and the gate electrode (GE) may form electrostatic capacitance.
- the second interlayer insulating layer (ILD2) can cover the capacitor electrode (CPE) and the first interlayer insulating layer (ILD1).
- the second interlayer insulating layer (ILD2) can include a contact hole through which the first connection electrode (CNE1) passes.
- the contact hole of the second interlayer insulating layer (ILD2) can be connected to the contact hole of the first interlayer insulating layer (ILD1) and the contact hole of the gate insulating layer (GI).
- the first connection electrode (CNE1) may be disposed on the second interlayer insulating layer (ILD2).
- the first connection electrode (CNE1) may electrically connect the drain electrode (DE) of the thin film transistor (TFT) and the second connection electrode (CNE2).
- the first connection electrode (CNE1) may be inserted into a contact hole formed in the second interlayer insulating layer (ILD2), the first interlayer insulating layer (ILD1), and the gate insulating layer (GI) to contact the drain electrode (DE) of the thin film transistor (TFT).
- the first protective layer (PAS1) can cover the first connection electrode (CNE1) and the second interlayer insulating layer (ILD2).
- the first protective layer (PAS1) can protect the thin film transistor (TFT).
- the first protective layer (PAS1) can include a contact hole through which the second connection electrode (CNE2) passes.
- the second connection electrode (CNE2) may be disposed on the first protective layer (PAS1).
- the second connection electrode (CNE2) may electrically connect the first connection electrode (CNE1) and the pixel electrode (AE) of the light-emitting element (ED).
- the second connection electrode (CNE2) may be inserted into a contact hole formed in the first protective layer (PAS1) and may contact the first connection electrode (CNE1).
- the second protective layer (PAS2) may cover the second connection electrode (CNE2) and the first protective layer (PAS1).
- the second protective layer (PAS2) may include a contact hole through which the pixel electrode (AE) of the light-emitting element (ED) passes.
- the light emitting element layer may be disposed on a thin film transistor layer (TFTL).
- the light emitting element layer may include a light emitting element (ED) and a pixel defining layer (PDL).
- the light emitting element (ED) may include a pixel electrode (AE), an organic film layer (EL), and a common electrode (CE).
- the pixel electrode (AE) may be disposed on the second passivation layer (PAS2).
- the pixel electrode (AE) may be disposed to overlap one of the openings (OPE1, OPE2, OPE3) of the pixel defining layer (PDL).
- the pixel electrode (AE) may be electrically connected to a drain electrode (DE) of a thin film transistor (TFT) through the first and second connection electrodes (CNE1, CNE2).
- the organic film layer (EL) may be disposed on the pixel electrode (AE).
- the organic film layer (EL) may be an organic light-emitting layer made of an organic material, but is not limited thereto.
- TFT thin film transistor
- CE common electrode
- holes and electrons may move to the organic film layer (EL) through the hole transport layer and the electron transport layer, respectively, and the holes and electrons may combine with each other in the organic film layer (EL) to emit light.
- the common electrode (CE) may be arranged on the organic film layer (EL).
- the common electrode (CE) may be implemented in the form of an electrode common to all pixels without being differentiated for each pixel.
- the common electrode (CE) may be arranged on the organic film layer (EL) in the first to third emission areas (EA1, EA2, EA3), and may be arranged on the pixel defining layer (PDL) in an area excluding the first to third emission areas (EA1, EA2, EA3).
- the common electrode (CE) can receive a common voltage or a low-potential voltage.
- the pixel electrode (AE) receives a voltage corresponding to the data voltage and the common electrode (CE) receives a low-potential voltage
- a potential difference is formed between the pixel electrode (AE) and the common electrode (CE), so that the organic film layer (EL) can emit light.
- a pixel defining layer can be disposed on a second passivation layer (PAS2) and a portion of a pixel electrode (AE) including a plurality of openings (OPE1, OPE2, OPE3).
- the pixel defining layer (PDL) can include a first opening (OPE1), a second opening (OPE2), and a third opening (OPE3), and each of the openings (OPE1, OPE2, OPE3) can expose a portion of the pixel electrode (AE).
- Each of the openings (OPE1, OPE2, OPE3) of the pixel defining layer (PDL) can define first to third light emitting areas (EA1, EA2, EA3).
- the first light emitting area (EA1) can be defined by the first opening (OPE1) of the pixel defining layer (PDL)
- the second light emitting area (EA2) can be defined by the second opening (OPE2) of the pixel defining layer (PDL)
- the third light emitting area (EA3) can be defined by the third opening (OPE3) of the pixel defining layer (PDL).
- the areas or sizes of the first to third light-emitting areas (EA1, EA2, EA3) may be the same. In another exemplary embodiment, the areas or sizes of the first to third light-emitting areas (EA1, EA2, EA3) may be different from each other. For example, the area of the first light-emitting area (EA1) may be larger than the areas of each of the second light-emitting area (EA2) and the third light-emitting area (EA3), and the area of the second light-emitting area (EA2) may be larger than the area of the third light-emitting area (EA3).
- the areas of the light-emitting areas may vary depending on the sizes of the openings (OPE1, OPE2, OPE3) formed in the pixel defining layer (PDL).
- the intensity of light emitted from the light-emitting area (EA1, EA2, EA3) can vary, and the color of the screen displayed on the display device (10) can be controlled by adjusting the area of the light-emitting area (EA1, EA2, EA3).
- a pixel defining layer can separate and insulate pixel electrodes (AE) of each of a plurality of light emitting elements (EDs).
- the pixel defining layer (PDL) can include a light absorbing material to prevent light reflection.
- the pixel defining layer (PDL) can include a polyimide (PI)-based binder and a pigment mixed with red, green, and blue.
- the pixel defining layer (PDL) can include a cardo-based binder resin and a mixture of a lactam-based black pigment and a blue pigment.
- the pixel defining layer (PDL) can include carbon black.
- the encapsulation layer (TFEL) is arranged on the common electrode (CE) and can cover a plurality of light-emitting elements (ED).
- the encapsulation layer (TFEL) can include at least one inorganic film to prevent oxygen or moisture from penetrating into the light-emitting element layer (EML).
- the encapsulation layer (TFEL) can include at least one organic film to protect the light-emitting element layer (EML) from foreign substances such as dust.
- the encapsulation layer may include a first encapsulation layer (TFE1), a second encapsulation layer (TFE2), and a third encapsulation layer (TFE3).
- the first encapsulation layer (TFE1) and the third encapsulation layer (TFE3) may be inorganic encapsulation layers, and the second encapsulation layer (TFE2) disposed therebetween may be an organic encapsulation layer.
- the first encapsulating layer (TFE1) and the third encapsulating layer (TFE3) may each include one or more inorganic insulators.
- the inorganic insulators may include aluminum oxide, titanium oxide, tantalum oxide, hafnium oxide, zinc oxide, silicon oxide, silicon nitride, and/or silicon oxynitride.
- the second encapsulating layer (TFE2) may include a polymer-based material.
- Polymer-based materials may include acrylic resins, epoxy resins, polyimides, and polyethylene.
- the organic encapsulating layer (320) may include acrylic resins, such as polymethyl methacrylate and polyacrylic acid.
- the second encapsulating layer (TFE2) may be formed by curing a monomer or applying a polymer.
- the light-shielding layer (BM) may be disposed on the encapsulation layer (TFEL).
- the light-shielding layer (BM) may include a plurality of holes (OPT1, OPT2, OPT3) arranged to overlap the light-emitting areas (EA1, EA2, EA3).
- the first hole (OPT1) may be arranged to overlap the first light-emitting area (EA1) or the first opening (OPE1).
- the second hole (OPT2) may be arranged to overlap the second light-emitting area (EA2) or the second opening (OPE2)
- the third hole (OPT3) may be arranged to overlap the third light-emitting area (EA3) or the third opening (OPE3).
- each of the holes may be larger than the area or size of the openings (OPE1, OPE2, OPE3) of the pixel defining layer (PDL).
- the holes (OPT1, OPT2, OPT3) of the light-shielding layer (BM) are formed larger than the openings (OPE1, OPE2, OPE3) of the pixel defining layer (PDL)
- the light emitted from the light-emitting areas (EA1, EA2, EA3) can be viewed by the user from the side as well as the front of the display device (10).
- the light-shielding layer (BM) may include a light-absorbing material.
- the light-shielding layer (BM) may include an inorganic black pigment or an organic black pigment.
- the inorganic black pigment may be carbon black, and the organic black pigment may include at least one of lactam black, perylene black, and aniline black, but is not limited thereto.
- the light-shielding layer (BM) may prevent visible light from penetrating between the first to third light-emitting areas (EA1, EA2, and EA3) and causing color mixing, thereby improving the color reproducibility of the display device (10).
- the color filters (CF1, CF2, CF3) of the color filter layer (CFL) may be arranged on the light-shielding layer (BM). Different color filters (CF1, CF2, CF3) may be arranged to correspond to different light-emitting areas (EA1, EA2, EA3) or openings (OPE1, OPE2, OPE3), and holes (OPT1, OPT2, OPT3) of the light-shielding layer (BM), respectively.
- the color filters (CF1, CF2, CF3) may include a first color filter (CF1), a second color filter (CF2), and a third color filter (CF3) arranged to correspond to different light-emitting areas (EA1, EA2, EA3), respectively.
- a first color filter (CF1) may be arranged to correspond to a first light-emitting area (EA1)
- a second color filter (CF2) may be arranged to correspond to a second light-emitting area (EA2)
- a third color filter (CF3) may be arranged to correspond to a third light-emitting area (EA3)
- the first color filter (CF1) may be arranged in a first hole (OPT1) of a light-shielding layer (BM)
- the second color filter (CF2) may be arranged in a second hole (OPT2) of the light-shielding layer (BM)
- the third color filter (CF3) may be arranged in a third hole (OPT3) of the light-shielding layer (BM).
- Each of the color filters may be arranged to have a larger area in a plan view than the holes (OPT1, OPT2, OPT3) of the light-shielding layer (BM), and some of them may be arranged directly on the light-shielding layer (BM).
- the color filters (CF1, CF2, CF3) may include a colorant, such as a dye or pigment, that absorbs light of a wavelength other than light of a specific wavelength, and may be arranged to correspond to the color of light emitted from the light-emitting areas (EA1, EA2, EA3).
- the first color filter (CF1) may be arranged to overlap the first light-emitting area (EA1) and may be a blue color filter that transmits only blue first light.
- the second color filter (CF2) may be arranged to overlap the second light-emitting area (EA2) and may be a red color filter that transmits only red second light
- the third color filter (CF3) may be arranged to overlap the third light-emitting area (EA3) and may be a green color filter that transmits only green third light.
- the planarization layer (OC) can be arranged on the color filters (CF1, CF2, CF3) to planarize the tops of the color filters (CF1, CF2, CF3).
- the planarization layer (OC) can be a colorless, light-transmitting layer that does not have a color in the visible light band.
- the planarization layer (OC) can include a colorless, light-transmitting organic material such as an acrylic resin.
- the color filters (CF1, CF2, CF3) of the display device (10) may be arranged to overlap with other adjacent color filters (CF1, CF2, CF3) on the light-shielding layer (BM).
- the color filters (CF1, CF2, CF3) arranged on the light-shielding layer (BM) may be arranged such that two adjacent color filters (CF1, CF2, CF3) completely cover the light-shielding layer (BM).
- the adjacent two color filters (CF1, CF2, CF3) may be arranged to partially overlap each other on the light-shielding layer (BM).
- Such overlapping of the color filters (CF1, CF2, CF3) can reduce external light reflection by the light-shielding layer (BM), and the overlapping arrangement of the color filters (CF1, CF2, CF3) can be designed to further reduce the external light reflection.
- the display device (10) may be arranged so that the first color filter (CF1) and the second color filter (CF2) adjacent to each other overlap each other on the light-shielding layer (BM), and the second color filter (CF2) and the third color filter (CF3) may also be arranged so as to overlap each other on the light-shielding layer (BM).
- the first color filter (CF1) and the third color filter (CF3) adjacent to each other they may also be arranged so as to overlap each other on the light-shielding layer (BM).
- a metal oxide layer may be disposed between the encapsulation layer (TFEL) and the light-shielding layer (BM).
- the metal oxide layer (USL) may block (e.g., reflect or absorb) light in an ultraviolet wavelength band incident from the outside.
- a pixel defining layer (PDL) disposed on a light-emitting element layer (EML) may cause outgassing through a chemical reaction when exposed to light in an ultraviolet wavelength band. Since the pixel defining layer (PDL) is in direct contact with the pixel electrode (AE), the organic film layer (EL), and the common electrode (CE), a gas generated from the pixel defining layer (PDL) may directly affect the organic film layer (EL) and the common electrode (CE).
- a gas emitted from the pixel defining layer (PDL) may deteriorate the organic film layer (EL) and oxidize the common electrode (CE). Accordingly, a pixel shrinkage problem may occur in which the area of each light-emitting area (EA1, EA2, and EA3) is reduced.
- a metal oxide layer capable of blocking light in the ultraviolet wavelength band between the encapsulation layer (TFEL) and the light shielding layer (BM)
- outgassing of the pixel defining layer (PDL) can be prevented, thereby reducing pixel shrinkage.
- the metal oxide layer (USL) can be directly disposed on the encapsulation layer (TFEL).
- the lower surface of the metal oxide layer (USL) is in contact with the upper surface of the encapsulation layer (TFEL), and for example, can be in direct contact with the upper surface of the third encapsulation layer (TFE3) of the encapsulation layer (TFEL).
- the metal oxide layer (USL) can be directly disposed on the lower surface of the light-shielding layer (BM).
- the upper surface of the metal oxide layer (USL) can be in direct contact with the lower surface of the light-shielding layer (BM).
- the metal oxide layer (USL) When the metal oxide layer (USL) is disposed under the light-shielding layer (BM), light incident from the outside can be reflected by the metal oxide layer (USL) and absorbed by the light-shielding layer (BM). Accordingly, it is possible to prevent visibility from being deteriorated due to reflection of external light.
- the metal oxide layer (USL) can block (e.g., reflect or absorb) light in an ultraviolet wavelength band incident from the outside.
- the metal oxide layer (USL) can include a metal oxide capable of blocking light in an ultraviolet wavelength band.
- the metal oxide layer (USL) can include at least one of titanium oxide, zinc oxide, and tantalum oxide.
- the metal oxide layer (USL) can have a thickness of 10 to 10,000 nm to effectively block light in an ultraviolet wavelength band.
- the thickness of the metal oxide layer (USL) is 10 nm or more, the light blocking characteristic in an ultraviolet wavelength band is excellent, and when the thickness of the metal oxide layer (USL) is 10,000 nm or less, the light blocking rate in a visible light wavelength band can be prevented from increasing.
- the metal oxide layer may include a plurality of aperture holes (OPU1, OPU2, OPU3) arranged to overlap the light-emitting areas (EA1, EA2, EA3).
- the first aperture hole (OPU1) may be arranged to overlap the first light-emitting area (EA1) or the first opening (OPE1).
- the second aperture hole (OPU2) may be arranged to overlap the second light-emitting area (EA2) or the second opening (OPE2)
- the third aperture hole (OPU3) may be arranged to overlap the third light-emitting area (EA3) or the third opening (OPE3).
- the area or size of the plurality of aperture holes (OPU1, OPU2, OPU3) of the metal oxide layer (USL) may be the same as the area or size of the light-emitting area (EA1, EA2, EA3) or the plurality of openings (OPE1, OPE2, OPE3).
- the area or size of the first aperture hole (OPU1) may be the same as the area or size of the first light-emitting area (EA1) or the first opening (OPE1)
- the area or size of the second aperture hole (OPU2) may be the same as the area or size of the second light-emitting area (EA2) or the second opening (OPE2)
- the area or size of the third aperture hole (OPU3) may be the same as the area or size of the third light-emitting area (EA3) or the third opening (OPE3).
- the side of the metal oxide layer (USL) may be aligned and coincide with the side of the pixel defining layer (PDL).
- the side of the metal oxide layer (USL) contacting the first aperture (OPU1) may be aligned and coincide with the side of the pixel defining layer (PDL) contacting the first opening (OPE1).
- the side of the metal oxide layer (USL) contacting the second aperture (OPU2) may be aligned and coincide with the side of the pixel defining layer (PDL) contacting the second opening (OPE2)
- the side of the metal oxide layer (USL) contacting the third aperture (OPU3) may be aligned and coincide with the side of the pixel defining layer (PDL) contacting the third opening (OPE3).
- the width (W1) of the metal oxide layer (USL) may be the same as the width (W2) of the pixel defining layer (PDL).
- the width (W1) of the metal oxide layer (USL) may refer to a distance between the first aperture hole (OPU1) and the second aperture hole (OPU2), or between the second aperture hole (OPU2) and the third aperture hole (OPU3), or between the third aperture hole (OPU3) and the first aperture hole (OPU1).
- the width (W2) of the pixel defining layer (PDL) may refer to a distance between the first opening (OPE1) and the second opening (OPE2), or between the second opening (OPE2) and the third opening (OPE3), or between the third opening (OPE3) and the first opening (OPE1).
- the width (W1) of the metal oxide layer (USL) between the first aperture (OPU1) and the second aperture (OPU2) may be the same as the width (W2) of the pixel defining layer (PDL) between the first opening (OPE1) and the second opening (OPE2).
- the width (W1) of the metal oxide layer (USL) between the second aperture (OPU2) and the third aperture (OPU3) may be the same as the width (W2) of the pixel defining layer (PDL) between the second opening (OPE2) and the third opening (OPE3)
- the width (W1) of the metal oxide layer (USL) between the third aperture (OPU3) and the first aperture (OPU1) may be the same as the width (W2) of the pixel defining layer (PDL) between the third opening (OPE3) and the first opening (OPE1).
- the area or size of the plurality of aperture holes (OPU1, OPU2, OPU3) of the metal oxide layer (USL) may be smaller than the area or size of the plurality of holes (OPT1, OPT2, OPT3) of the light-shielding layer (BM).
- the area or size of the first aperture hole (OPU1) may be smaller than the area or size of the first hole (OPT1)
- the area or size of the second aperture hole (OPU2) may be smaller than the area or size of the second hole (OPT2)
- the area or size of the third aperture hole (OPU3) may be smaller than the area or size of the third hole (OPT3).
- the side of the metal oxide layer (USL) may protrude outwardly more than the side of the light-shielding layer (BM).
- the side of the metal oxide layer (USL) contacting the first opening hole (OPU1) may protrude outwardly more than the side of the light-shielding layer (BM) contacting the first hole (OPT1).
- the side of the metal oxide layer (USL) contacting the second opening hole (OPU2) may protrude outwardly more than the side of the light-shielding layer (BM) contacting the second hole (OPT2)
- the side of the metal oxide layer (USL) contacting the third opening hole (OPU3) may protrude outwardly more than the side of the light-shielding layer (BM) contacting the third hole (OPT3).
- the width (W1) of the metal oxide layer (USL) may be greater than the width (W3) of the light-shielding layer (BM).
- the width (W3) of the light-shielding layer (BM) may refer to a distance between the first hole (OPT1) and the second hole (OPT2), or between the second hole (OPT2) and the third hole (OPT3), or between the third hole (OPT3) and the first hole (OPT1).
- the width (W1) of the metal oxide layer (USL) between the first aperture hole (OPU1) and the second aperture hole (OPU2) may be greater than the width (W3) of the light-shielding layer (BM) between the first hole (OPT1) and the second hole (OPT2).
- the width (W1) of the metal oxide layer (USL) between the second aperture hole (OPU2) and the third aperture hole (OPU3) may be greater than the width (W3) of the light-shielding layer (BM) between the second hole (OPT2) and the third hole (OPT3)
- the width (W1) of the metal oxide layer (USL) between the third aperture hole (OPU3) and the first aperture hole (OPU1) may be greater than the width (W3) of the light-shielding layer (BM) between the third hole (OPT3) and the first hole (OPT1).
- the display device (10) can block light in the ultraviolet wavelength band incident from the outside from reaching the pixel defining layer (PDL) by arranging a metal oxide layer (USL) that absorbs light in the ultraviolet wavelength band between the encapsulating layer (TFE) and the light-shielding layer (BM). Accordingly, deterioration of the organic film layer (EL) and oxidation of the common electrode (CE) due to outgassing of the pixel defining layer (PDL) can be prevented, thereby preventing a pixel shrinkage phenomenon.
- a metal oxide layer USL
- EL organic film layer
- CE common electrode
- Fig. 8 is a plan view showing pixels according to another embodiment.
- Fig. 9 is a cross-sectional view taken along line X2-X2' of Fig. 8.
- the present embodiment is different from the embodiments of FIGS. 5 to 7 described above in that the width (W1) of the metal oxide layer (USL) is equal to the width (W3) of the light-shielding layer (BM) and is smaller than the width (W2) of the pixel defining film (PDL).
- W1 of the metal oxide layer (USL) is equal to the width (W3) of the light-shielding layer (BM) and is smaller than the width (W2) of the pixel defining film (PDL).
- the area or size of the plurality of aperture holes (OPU1, OPU2, OPU3) of the metal oxide layer (USL) may be larger than the area or size of the light-emitting area (EA1, EA2, EA3) or the plurality of openings (OPE1, OPE2, OPE3).
- the area or size of the first aperture hole (OPU1) may be larger than the area or size of the first light-emitting area (EA1) or the first opening (OPE1)
- the area or size of the second aperture hole (OPU2) may be larger than the area or size of the second light-emitting area (EA2) or the second opening (OPE2)
- the area or size of the third aperture hole (OPU3) may be larger than the area or size of the third light-emitting area (EA3) or the third opening (OPE3).
- the side of the metal oxide layer (USL) may be arranged inside the side of the pixel defining layer (PDL).
- the side of the metal oxide layer (USL) contacting the first aperture (OPU1) may be arranged inside the side of the pixel defining layer (PDL) contacting the first opening (OPE1).
- the side of the metal oxide layer (USL) contacting the second aperture (OPU2) may be arranged inside the side of the pixel defining layer (PDL) contacting the second opening (OPE2)
- the side of the metal oxide layer (USL) contacting the third aperture (OPU3) may be arranged inside the side of the pixel defining layer (PDL) contacting the third opening (OPE3).
- the width (W1) of the metal oxide layer (USL) may be smaller than the width (W2) of the pixel defining layer (PDL).
- the width (W1) of the metal oxide layer (USL) between the first aperture (OPU1) and the second aperture (OPU2) may be smaller than the width (W2) of the pixel defining layer (PDL) between the first opening (OPE1) and the second opening (OPE2).
- the width (W1) of the metal oxide layer (USL) between the second aperture (OPU2) and the third aperture (OPU3) may be smaller than the width (W2) of the pixel defining layer (PDL) between the second aperture (OPE2) and the third aperture (OPE3)
- the width (W1) of the metal oxide layer (USL) between the third aperture (OPU3) and the first aperture (OPU1) may be smaller than the width (W2) of the pixel defining layer (PDL) between the third aperture (OPE3) and the first aperture (OPE1).
- the area or size of the plurality of aperture holes (OPU1, OPU2, OPU3) of the metal oxide layer (USL) may be the same as the area or size of the plurality of holes (OPT1, OPT2, OPT3) of the light-shielding layer (BM).
- the area or size of the first aperture hole (OPU1) may be the same as the area or size of the first hole (OPT1)
- the area or size of the second aperture hole (OPU2) may be the same as the area or size of the second hole (OPT2)
- the area or size of the third aperture hole (OPU3) may be the same as the area or size of the third hole (OPT3).
- the side edge of the metal oxide layer (USL) may be aligned and coincide with the side edge of the light-shielding layer (BM).
- the side edge of the metal oxide layer (USL) contacting the first aperture hole (OPU1) may be aligned and coincide with the side edge of the light-shielding layer (BM) contacting the first hole (OPT1).
- the side edge of the metal oxide layer (USL) contacting the second aperture hole (OPU2) may be aligned and coincide with the side edge of the light-shielding layer (BM) contacting the second hole (OPT2)
- the side edge of the metal oxide layer (USL) contacting the third aperture hole (OPU3) may be aligned and coincide with the side edge of the light-shielding layer (BM) contacting the third hole (OPT3).
- the width (W1) of the metal oxide layer (USL) may be the same as the width (W3) of the light-shielding layer (BM).
- the width (W1) of the metal oxide layer (USL) between the first aperture hole (OPU1) and the second aperture hole (OPU2) may be the same as the width (W3) of the light-shielding layer (BM) between the first hole (OPT1) and the second hole (OPT2).
- the width (W1) of the metal oxide layer (USL) between the second aperture hole (OPU2) and the third aperture hole (OPU3) may be the same as the width (W3) of the light-shielding layer (BM) between the second hole (OPT2) and the third hole (OPT3)
- the width (W1) of the metal oxide layer (USL) between the third aperture hole (OPU3) and the first aperture hole (OPU1) may be the same as the width (W3) of the light-shielding layer (BM) between the third hole (OPT3) and the first hole (OPT1).
- the display device (10) can reduce light in the ultraviolet wavelength band incident from the outside from reaching the pixel defining film (PDL) by arranging a metal oxide layer (USL) that absorbs light in the ultraviolet wavelength band between the encapsulating layer (TFE) and the light shielding layer (BM). Accordingly, deterioration of the organic film layer (EL) and oxidation of the common electrode (CE) due to outgassing of the pixel defining film (PDL) can be reduced, thereby reducing the pixel shrinkage phenomenon.
- a metal oxide layer USL
- EL organic film layer
- CE common electrode
- Fig. 10 is a plan view showing pixels according to another embodiment.
- Fig. 11 is a cross-sectional view taken along line X3-X3' of Fig. 10.
- this embodiment is different from the embodiments of FIGS. 5 to 9 described above in that the width (W1) of the metal oxide layer (USL) is smaller than the width (W3) of the light-shielding layer (BM) and the width (W2) of the pixel defining film (PDL).
- W1 of the metal oxide layer (USL) is smaller than the width (W3) of the light-shielding layer (BM) and the width (W2) of the pixel defining film (PDL).
- the metal oxide layer (USL) may be disposed between the encapsulation layer (TFE) and the light-shielding layer (BM).
- the metal oxide layer (USL) may be disposed between the third encapsulation layer (TFE3) of the encapsulation layer (TFEL) and the light-shielding layer (BM).
- the light-shielding layer (BM) may cover the metal oxide layer (USL).
- the light-shielding layer (BM) may be in direct contact with the upper surface and side edges of the metal oxide layer (USL).
- the area or size of the plurality of aperture holes (OPU1, OPU2, OPU3) of the metal oxide layer (USL) may be larger than the area or size of the light-emitting area (EA1, EA2, EA3) or the plurality of openings (OPE1, OPE2, OPE3).
- the area or size of the first aperture hole (OPU1) may be larger than the area or size of the first light-emitting area (EA1) or the first opening (OPE1)
- the area or size of the second aperture hole (OPU2) may be larger than the area or size of the second light-emitting area (EA2) or the second opening (OPE2)
- the area or size of the third aperture hole (OPU3) may be larger than the area or size of the third light-emitting area (EA3) or the third opening (OPE3).
- the side of the metal oxide layer (USL) may be arranged inside the side of the pixel defining layer (PDL).
- the side of the metal oxide layer (USL) contacting the first aperture (OPU1) may be arranged inside the side of the pixel defining layer (PDL) contacting the first opening (OPE1).
- the side of the metal oxide layer (USL) contacting the second aperture (OPU2) may be arranged inside the side of the pixel defining layer (PDL) contacting the second opening (OPE2)
- the side of the metal oxide layer (USL) contacting the third aperture (OPU3) may be arranged inside the side of the pixel defining layer (PDL) contacting the third opening (OPE3).
- the width (W1) of the metal oxide layer (USL) may be smaller than the width (W2) of the pixel defining layer (PDL).
- the width (W1) of the metal oxide layer (USL) between the first aperture (OPU1) and the second aperture (OPU2) may be smaller than the width (W2) of the pixel defining layer (PDL) between the first opening (OPE1) and the second opening (OPE2).
- the width (W1) of the metal oxide layer (USL) between the second aperture (OPU2) and the third aperture (OPU3) may be smaller than the width (W2) of the pixel defining layer (PDL) between the second aperture (OPE2) and the third aperture (OPE3)
- the width (W1) of the metal oxide layer (USL) between the third aperture (OPU3) and the first aperture (OPU1) may be smaller than the width (W2) of the pixel defining layer (PDL) between the third aperture (OPE3) and the first aperture (OPE1).
- the area or size of the plurality of aperture holes (OPU1, OPU2, OPU3) of the metal oxide layer (USL) may be larger than the area or size of the plurality of holes (OPT1, OPT2, OPT3) of the light-shielding layer (BM).
- the area or size of the first aperture hole (OPU1) may be larger than the area or size of the first hole (OPT1)
- the area or size of the second aperture hole (OPU2) may be larger than the area or size of the second hole (OPT2)
- the area or size of the third aperture hole (OPU3) may be larger than the area or size of the third hole (OPT3).
- the side of the metal oxide layer (USL) may be arranged inside the side of the light-shielding layer (BM).
- the side of the metal oxide layer (USL) contacting the first opening hole (OPU1) may be arranged inside the side of the light-shielding layer (BM) contacting the first hole (OPT1).
- the side of the metal oxide layer (USL) contacting the second opening hole (OPU2) may be arranged inside the side of the light-shielding layer (BM) contacting the second hole (OPT2)
- the side of the metal oxide layer (USL) contacting the third opening hole (OPU3) may be arranged inside the side of the light-shielding layer (BM) contacting the third hole (OPT3).
- the width (W1) of the metal oxide layer (USL) may be smaller than the width (W3) of the light-shielding layer (BM).
- the width (W1) of the metal oxide layer (USL) between the first aperture hole (OPU1) and the second aperture hole (OPU2) may be smaller than the width (W3) of the light-shielding layer (BM) between the first hole (OPT1) and the second hole (OPT2).
- the width (W1) of the metal oxide layer (USL) between the second aperture hole (OPU2) and the third aperture hole (OPU3) may be smaller than the width (W3) of the light-shielding layer (BM) between the second hole (OPT2) and the third hole (OPT3)
- the width (W1) of the metal oxide layer (USL) between the third aperture hole (OPU3) and the first aperture hole (OPU1) may be smaller than the width (W3) of the light-shielding layer (BM) between the third hole (OPT3) and the first hole (OPT1).
- the display device (10) can reduce light in the ultraviolet wavelength band incident from the outside from reaching the pixel defining film (PDL) by arranging a metal oxide layer (USL) that absorbs light in the ultraviolet wavelength band between the encapsulating layer (TFE) and the light shielding layer (BM). Accordingly, deterioration of the organic film layer (EL) and oxidation of the common electrode (CE) due to outgassing of the pixel defining film (PDL) can be reduced, thereby reducing the pixel shrinkage phenomenon.
- a metal oxide layer USL
- EL organic film layer
- CE common electrode
- Fig. 12 is a cross-sectional view showing a display device according to another embodiment.
- the metal oxide layer (USL) may be disposed within the encapsulation layer (TFE). Specifically, the metal oxide layer (USL) may be disposed between the second encapsulation layer (TFE2) and the third encapsulation layer (TFE3) of the encapsulation layer (TFE). For example, the metal oxide layer (USL) may be directly disposed on the upper surface of the second encapsulation layer (TFE2) and covered by the third encapsulation layer (TFE3). That is, the third encapsulation layer (TFE3) may cover the metal oxide layer (USL).
- the metal oxide layer (USL) may be disposed under the third encapsulation layer (TFE3) and adjacent to the pixel defining layer (PDL). That is, by disposing the metal oxide layer (USL) adjacent to the pixel defining layer (PDL), the incident angle of light in the ultraviolet wavelength band incident from the outside can be reduced, thereby reducing the amount of light incident on the pixel defining layer (PDL).
- the metal oxide layer (USL) can overlap the pixel defining layer (PDL) and can overlap the light-shielding layer (BM).
- the metal oxide layer (USL) can include a plurality of aperture holes (OPU1, OPU2, OPU3). As described in FIGS. 5 and 6, the area or size of the plurality of aperture holes (OPU1, OPU2, OPU3) of the metal oxide layer (USL) can be the same as the area or size of the light-emitting area (EA1, EA2, EA3) or the plurality of openings (OPE1, OPE2, OPE3).
- the side of the metal oxide layer (USL) can be mutually aligned and matched with the side of the pixel defining layer (PDL).
- the area or size of the plurality of aperture holes (OPU1, OPU2, OPU3) of the metal oxide layer (USL) can be smaller than the area or size of the plurality of holes (OPT1, OPT2, OPT3) of the light-shielding layer (BM).
- Fig. 13 is a cross-sectional view showing a display device according to another embodiment.
- FIG. 13 there is a difference from the embodiments of FIGS. 5 to 12 described above in that the metal oxide layer (USL) is disposed between the first encapsulating layer (TFE1) and the second encapsulating layer (TFE2) of the encapsulating layer (TFE).
- USB metal oxide layer
- the metal oxide layer (USL) may be disposed within the encapsulation layer (TFE). Specifically, the metal oxide layer (USL) may be disposed between the first encapsulation layer (TFE1) and the second encapsulation layer (TFE2) of the encapsulation layer (TFE). For example, the metal oxide layer (USL) may be directly disposed on the upper surface of the first encapsulation layer (TFE1) and covered by the second encapsulation layer (TFE2). That is, the second encapsulation layer (TFE2) may cover the metal oxide layer (USL).
- the metal oxide layer (USL) may be disposed under the second encapsulation layer (TFE2) and adjacent to the pixel defining layer (PDL). That is, by disposing the metal oxide layer (USL) adjacent to the pixel defining layer (PDL), the incident angle of light in the ultraviolet wavelength band incident from the outside can be reduced, thereby reducing the amount of light incident on the pixel defining layer (PDL).
- the metal oxide layer (USL) can overlap the pixel defining layer (PDL) and can overlap the light-shielding layer (BM).
- the metal oxide layer (USL) can include a plurality of aperture holes (OPU1, OPU2, OPU3). As described in FIGS. 5 and 6, the area or size of the plurality of aperture holes (OPU1, OPU2, OPU3) of the metal oxide layer (USL) can be the same as the area or size of the light-emitting area (EA1, EA2, EA3) or the plurality of openings (OPE1, OPE2, OPE3).
- the side of the metal oxide layer (USL) can be mutually aligned and matched with the side of the pixel defining layer (PDL).
- the area or size of the plurality of aperture holes (OPU1, OPU2, OPU3) of the metal oxide layer (USL) can be smaller than the area or size of the plurality of holes (OPT1, OPT2, OPT3) of the light-shielding layer (BM).
- FIG. 14 is a cross-sectional view showing each light-emitting area of a display device according to one embodiment.
- FIG. 15 is a plan view showing each light-emitting area of a display device according to one embodiment.
- FIG. 16 is a cross-sectional view taken along line X4-X4' of FIG. 15.
- FIG. 17 is a cross-sectional view showing a part of a pixel opening of a display device according to one embodiment.
- the lower emitting layers (OLE1, OLE2, OLE3) and the upper emitting layers (OLE1', OLE2', OLE3') are represented as a single layer by the drawing symbol 'OLE', and the common layers formed continuously in each emitting area (EA1, EA2, EA3), such as a hole injection layer (HIL), a first hole transport layer (HTL1), a first electron transport layer (ETL1), a charge generation layer (CGL), a second hole transport layer (HTL2), a buffer layer (BUL), and a second electron transport layer (ETL2), are represented as a single layer by the drawing symbol 'COL'.
- HIL hole injection layer
- HTL1 first hole transport layer
- ETL1 first electron transport layer
- CGL charge generation layer
- BUL buffer layer
- ETL2 buffer layer
- the hole injection layer (HIL) and the first hole transport layer (HTL1) are depicted as one layer
- the first electron transport layer (ETL1), the charge generation layer (CGL), and the second hole transport layer (HTL2) are depicted as one layer
- the buffer layer (BUL) and the second electron transport layer (ETL2) are depicted as one layer.
- the present embodiment is different from the embodiments of FIGS. 5 to 13 described above in that pattern openings (OPX1, OPX2, OPX3) of a metal oxide layer (USL) are arranged on pixel openings (POP1, POP2, POP3) arranged on a pixel defining film (PDL) and a second protective layer (PAS2).
- OPX1, OPX2, OPX3 of a metal oxide layer (USL) are arranged on pixel openings (POP1, POP2, POP3) arranged on a pixel defining film (PDL) and a second protective layer (PAS2).
- POP1, POP2, POP3 pixel openings
- PDL pixel defining film
- PAS2 second protective layer
- each light emitting element (ED1, ED2, ED3) is arranged in the first light emitting area (EA1), the second light emitting area (EA2), and the third light emitting area (EA3), respectively, and each light emitting element (ED1, ED2, ED3) may include a pixel electrode (AE), an organic film layer (EL), and a common electrode (CE).
- AE pixel electrode
- EL organic film layer
- CE common electrode
- the organic film layer (ORL) may be formed in a structure in which a plurality of light-emitting layers are overlapped and arranged, for example, in a tandem structure.
- the organic film layer (ORL) may include a first stack (ST1) including lower light-emitting layers (OLE1, OLE2, OLE3), a second stack (ST2) positioned on the first stack (ST1) and including upper light-emitting layers (OLE1', OLE2', OLE3'), and a charge generation layer (CGL) positioned between the first stack (ST1) and the second stack (ST2).
- the first stack (ST1) and the second stack (ST2) may be arranged to overlap each other.
- the lower emitting layers (OLE1, OLE2, OLE3) and the upper emitting layers (OLE1', OLE2', OLE3') can be arranged to overlap each other.
- the first lower emitting layer (OLE1) and the first upper emitting layer (OLE1') can emit light of a first color, for example, blue light.
- the second lower emitting layer (OLE2) and the second upper emitting layer (OLE2') can emit light of a second color, for example, red light.
- the third lower emitting layer (OLE3) and the third upper emitting layer (OLE3') can emit light of a third color, for example, green light. That is, the emitted light finally emitted from the organic film layer (ORL) can be blue light in the first emitting area (LA1), red light in the second emitting area (LA2), and green light in the third emitting area (LA3).
- the first lower emitting layer (OLE1) and the first upper emitting layer (OLE1') emitting blue light may each include a host and a dopant.
- the host is not particularly limited as long as it is a commonly used substance, but for example, 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(d
- the first lower emitting layer (OLE1) and the first upper emitting layer (OLE1') that emit blue light may include a fluorescent material including any one selected from the group consisting of, for example, spiro-DPVBi, spiro-6P, distyryl-benzene (DSB), distyryl-arylene (DSA), polyfluorene (PFO) polymers, and poly(p-phenylene vinylene) (PPV) polymers.
- the phosphorescent material may include an organometallic complex such as (4,6-F2ppy)2Irpic.
- the second lower emitting layer (OLE2) and the second upper emitting layer (OLE2') emitting red light may be formed of a phosphorescent material including a host material including CBP (carbazole biphenyl) or mCP (1,3-bis(carbazol-9-yl)) and a dopant including at least one selected from the group consisting of PIQIr(acac)(bis(1-phenylisoquinoline)acetylacetonate iridium), PQIr(acac)(bis(1-phenylquinoline)acetylacetonate iridium), PQIr(tris(1-phenylquinoline)iridium), and PtOEP(octaethylporphyrin platinum), or alternatively, may be formed of a fluorescent material including PBD:Eu(DBM) 3 (Phen) or Perylene, but is not limited thereto.
- a fluorescent material including PBD:Eu(DBM)
- the third lower emitting layer (OLE3) and the third upper emitting layer (OLE3') emitting green light include a host material including CBP or mCP, and may be formed of a phosphorescent material including a dopant material including Ir(ppy)3 (fac tris(2-phenylpyridine)iridium), or alternatively, may be formed of a fluorescent material including Alq3 (tris(8-hydroxyquinolino)aluminum), but is not limited thereto.
- the charge generation layer (CGL) may be arranged between the first stack (ST1) and the second stack (ST2).
- the charge generation layer (CGL) may serve to inject charges into each light-emitting layer.
- the charge generation layer (CGL) may serve to control a charge balance between the first stack (ST1) and the second stack (ST2).
- the charge generation layer (CGL) may include an n-type charge generation layer (CGL1) and a p-type charge generation layer (CGL2).
- the p-type charge generation layer (CGL2) may be arranged on the n-type charge generation layer (CGL1) and may be located between the n-type charge generation layer (CGL1) and the second stack (ST2).
- the charge generation layer (CGL) may have a structure in which an n-type charge generation layer (CGL1) and a p-type charge generation layer (CGL2) are joined to each other.
- the n-type charge generation layer (CGL1) may be arranged closer to the pixel electrode (AE) among the pixel electrode (AE) and the common electrode (CE).
- the p-type charge generation layer (CGL2) is arranged closer to the common electrode (CE) among the pixel electrode (AE) and the common electrode (CE).
- the n-type charge generation layer (CGL1) supplies electrons to the lower emitting layers (OLE1, OLE2, OLE3) adjacent to the pixel electrodes (AE1, AE2, AE3), and the p-type charge generation layer (CGL2) supplies holes to the upper emitting layers (OLE1', OLE2', OLE3') included in the second stack (ST2).
- a charge generation layer (CGL) between the first stack (ST1) and the second stack (ST2) to provide charges to each of the light-emitting layers, the light-emitting efficiency can be increased and the driving voltage can be lowered.
- the first stack (ST1) is disposed on the first pixel electrode (AE1), the second pixel electrode (AE2), and the third pixel electrode (AE3), and may further include a first hole transport layer (HTL1), a first electron block layer (EBL1), and a first electron transport layer (ETL1).
- HTL1 first hole transport layer
- EBL1 first electron block layer
- ETL1 first electron transport layer
- the first hole transport layer (HTL1) may be disposed on each of the first pixel electrode (AE1), the second pixel electrode (AE2), and the third pixel electrode (AE3).
- the first hole transport layer (HTL1) serves to facilitate 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]), and the like.
- carbazole derivatives such as N-phenylcarbazole and polyvinylcarbazole
- fluorene derivatives such as TPD (N,N'-bis(3-methyl
- the first electron block layer (EBL1) may be positioned on the first hole transport layer (HTL1) and may be positioned between the first hole transport layer (HTL1) and the lower emitting layers (OLE1, OLE2, OLE3).
- the first electron block layer (EB1) may include a hole transport material and a metal or a metal compound to prevent electrons generated in the lower emitting layers (OLE1, OLE2, OLE3) from passing to the first hole transport layer (HTL1).
- the first hole transport layer (HTL1) and the first electron block layer (EBL1) described above may also be formed as a single layer in which respective materials are mixed.
- the first electron transport layer (ETL1) can be disposed on the lower emitting layers (OLE1, OLE2, OLE3) and can be disposed between the charge generation layer (CGL) and the lower emitting layers (OLE1, OLE2, OLE3).
- 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-
- the second stack (ST2) may be disposed on the charge generation layer (CGL) and may further include a second hole transport layer (HTL2), a second electron block layer (EBL2), a buffer layer (BUL), and a second electron transport layer (ETL2).
- HTL2 second hole transport layer
- EBL2 second electron block layer
- BUL buffer layer
- ETL2 second electron transport layer
- the second hole transport layer (HTL2) may be positioned on the charge generation layer (CGL).
- 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 the materials included in the first hole transport layer (HTL1).
- the second hole transport layer (HTL2) may be formed of a single layer, or may be formed of a plurality of layers.
- the second electron block layer (EBL2) may be positioned on the second hole transport layer (HTL2) and may be arranged between the second hole transport layer (HTL2) and the upper emitting layers (OLE1', OLE2', OLE3').
- the second electron block layer (EBL2) may be made of the same material and the same structure as the first electron block layer (EBL1), or may include one or more materials selected from the materials exemplified as the materials included in the first electron block layer (EBL1).
- the second electron transport layer (ETL2) may be disposed on the upper emitting layers (OLE1', OLE2', OLE3'), and may be disposed between the upper emitting layers (OLE1', OLE2', OLE3') and the common electrode (CE).
- 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 may be formed of a plurality of layers.
- the buffer layer (BUL) may be disposed between the upper emitting layers (OLE1', OLE2', OLE3') and the second electron transport layer (ETL2).
- the buffer layer (BUL) may prevent holes from flowing from the upper emitting layers (OLE1', OLE2', OLE3') to the common electrode (CE).
- the buffer layer (BUL) may include, but is not limited to, materials having hole properties, for example, a hole transport layer material.
- a hole injection layer may be further disposed between at least one of the first stack (ST1) and the first pixel electrode (AE1), the second pixel electrode (AE2), and the third pixel electrode (AE3), and between the second stack (ST2) and the charge generation layer (CGL1).
- the hole injection layer may serve to inject holes more smoothly into the lower emitting layers (OLE1, OLE2, OLE3) and the upper emitting layers (OLE1', OLE2', OLE3').
- 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).
- CuPc cupper phthalocyanine
- PEDOT poly(3,4)-ethylenedioxythiophene
- PANI polyaniline
- NPD N,N-dinaphthyl-N,N'-diphenyl benzidine
- an electron injection layer may be further positioned between the second electron transport layer (ETL2) and the common electrode (CE), and between the charge generation layer (CGL) and the first stack (ST1).
- the electron injection layer serves to facilitate the injection of electrons, and may use, but is not limited to, Alq3 (tris(8-hydroxyquinolino)aluminum), PBD, TAZ, spiro-PBD, BAlq or SAlq.
- the electron injection layer may be a metal halide compound, and may be, for example, at least one selected from the group consisting of MgF 2 , LiF, NaF, KF, RbF, CsF, FrF, LiI, NaI, KI, RbI, CsI, FrI and CaF2 , but is not limited thereto.
- the electron injection layer may include a lanthanide material such as Yb, Sm, or Eu.
- the electron injection layer may simultaneously include a metal halide material and a lanthanide material, such as RbI:Yb, KI:Yb, etc.
- the electron injection layer may be formed by co-deposition of the metal halide material and the lanthanide material.
- the charge generation layer (CGL) may be a common layer that is continuously arranged to extend to a plurality of light-emitting areas (EA1, EA2, EA3).
- the charge generation layer (CGL) may be a common layer that is continuously arranged in the first light-emitting area (EA1), the second light-emitting area (EA2), and the third light-emitting area (EA3).
- the charge generation layer (CGL) may play a role in generating and transferring electrons and holes that contribute to actual light emission.
- a leakage current may occur in which charges (electrons and holes) generated in an adjacent light-emitting area are transferred to the adjacent light-emitting area.
- light emission due to the leakage current may occur in an light-emitting area that should not emit light, which may cause color mixing or undesired gradation to be expressed.
- pixel openings POP1, POP2, POP3 are formed to partially short-circuit the charge generation layer (CGL) between each light-emitting area (EA1, EA2, EA3) to increase the charge movement path, thereby reducing leakage current, and pattern openings (OPX1, OPX2, OPX3) are formed in the metal oxide layer (USL), thereby omitting unnecessary metal oxide layers (USL).
- the second protective layer (PAS2) and the pixel defining film (PDL) may include a plurality of pixel openings (POP1, POP2, POP3).
- the plurality of pixel openings (POP1, POP2, POP3) may be arranged between the first to third light-emitting areas (EA1, EA2, EA3) and may be arranged so as not to overlap with the first to third light-emitting areas (EA1, EA2, EA3).
- the plurality of pixel openings (POP1, POP2, POP3) may be arranged so as to overlap with the light-blocking layer (BM).
- the present embodiment illustrates that the plurality of pixel openings (POP1, POP2, POP3) are arranged between each of the first to third light-emitting areas (EA1, EA2, EA3), the present invention is not limited thereto, and some may be omitted.
- the plurality of pixel apertures may include a first pixel aperture (POP1) positioned between the first light-emitting area (EA1) and the second light-emitting area (EA2), a second pixel aperture (POP2) positioned between the second light-emitting area (EA2) and the third light-emitting area (EA3), and a third pixel aperture (POP3) positioned between the third light-emitting area (EA3) and the first light-emitting area (EA1).
- the pixel defining film (PDL) and the second passivation layer (PAS2) are layers made of organic materials and can be formed with a very thick thickness compared to layers made of inorganic materials.
- the pixel defining film (PDL) and the second passivation layer (PAS2) can be formed with a thickness of about several micrometers.
- the side surfaces of the plurality of pixel openings (POP1, POP2, POP3) formed in the pixel defining film (PDL) and the second passivation layer (PAS2) have a very large taper, so that common layers made of very thin thicknesses, such as a hole injection layer (HIL), a first hole transport layer (HTL1), a first electron transport layer (ETL1), a charge generation layer (CGL), a second hole transport layer (HTL2), a buffer layer (BUL), and a second electron transport layer (ETL2), can be separated. Accordingly, by separating the common layers in multiple pixel apertures (POP1, POP2, POP3), leakage current in which charges (electrons and holes) generated in adjacent light-emitting regions are transferred to adjacent light-emitting regions can be reduced.
- HIL hole injection layer
- HTL1 first hole transport layer
- ETL1 first electron transport layer
- CGL charge generation layer
- BUL buffer layer
- ETL2 buffer layer
- the light-shielding layer (BM) may be disposed on the encapsulation layer (TFEL).
- the light-shielding layer (BM) may include a plurality of pattern openings (OPX1, OPX2, OPX3) arranged to overlap a plurality of pixel openings (POP1, POP2, POP3).
- the plurality of pattern openings (OPX1, OPX2, OPX3) may be arranged between each of the light-emitting areas (EA1, EA2, EA3) and may be arranged to overlap the light-shielding layer (BM).
- the first pattern opening (OPX1) may be arranged to overlap the first pixel opening (POP1).
- the second pattern opening (OPX2) may be arranged to overlap the second pixel opening (POP2)
- the third pattern opening (OPX3) may be arranged to overlap the third pixel opening (POP3).
- each pattern opening may be the same as the area or size of each pixel opening (POP1, POP2, POP3).
- the area or size of the first pattern opening (OPX1) may be the same as the area or size of the first pixel opening (POP1)
- the area or size of the second pattern opening (OPX2) may be the same as the area or size of the second pixel opening (POP2)
- the area or size of the third pattern opening (OPX3) may be the same as the area or size of the third pixel opening (POP3).
- the area or size of each of the pattern apertures may be larger than the area or size of each of the pixel apertures (POP1, POP2, POP3). Also, in some embodiments, the area or size of each of the pattern apertures (OPX1, OPX2, OPX3) may be smaller than the area or size of each of the pixel apertures (POP1, POP2, POP3).
- the display device (10) can reduce leakage current by forming pixel openings (POP1, POP2, POP3) formed in the pixel defining film (PDL) and the second passivation layer (PAS2) between each of the light-emitting areas (EA1, EA2, EA3).
- POP1, POP2, POP3 pixel openings
- PAS2 the second passivation layer
- OPX1, OPX2, OPX3 the metal oxide layer (USL) overlapping the pixel openings (POP1, POP2, POP3), unnecessary metal oxide layers (USL) can be omitted.
- Fig. 18 is a schematic diagram of a case where a display device according to one embodiment is applied to a vehicle.
- a display device (10) may be, for example, a display device applied to a vehicle.
- the vehicle may include a body forming the exterior of the vehicle and an interior space defined by the body.
- the body may include a windshield (W) that protects the driver and passengers from the outside and provides a view to the driver.
- the display device (10) may be provided in the interior space, as illustrated in FIG. 18.
- the display device (10) may be placed on a dashboard provided in the interior space.
- the display device (10) may be placed on the dashboard in front of the driver's seat to provide speed information, etc. to the driver, or may be placed on the dashboard in front of the passenger seat to provide entertainment information, etc. to the passenger, or may be placed in the center of the dashboard to provide map information, etc.
- FIG. 18 illustrates a display device (10) placed on the dashboard in front of the driver's seat and a driver viewing a display screen of the display device (10).
- the driver can recognize (or recognize) the display screen of the display device (10) through light (LGT1) emitted from the display device (10) toward the driver.
- LGT1 light
- the display device (10) may be irradiated with light (UV) in an ultraviolet wavelength band from the outside or inside of the vehicle.
- the display device (10) includes a metal oxide layer (USL) overlapping a pixel defining film (PDL), thereby blocking light (UV) in an ultraviolet wavelength band incident from the outside from being incident on the pixel defining film (PDL). Accordingly, deterioration of the organic film layer (EL) and oxidation of the common electrode (CE) due to outgassing of the pixel defining film (PDL) can be reduced, thereby reducing the pixel shrinkage phenomenon.
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- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
Claims (20)
- 기판;상기 기판 상에 배치되며, 화소 전극, 유기막층 및 공통 전극을 포함하는 발광 소자층;상기 기판 상에 배치되며, 상기 화소 전극의 일부를 노출하는 복수의 개구부들을 포함하는 화소 정의막;상기 발광 소자층 상에 배치된 봉지층;상기 봉지층 상에 배치되며, 상기 화소 정의막과 중첩하는 금속 산화물층;상기 금속 산화물층 상에 배치되며, 상기 금속 산화물층과 중첩하는 차광층; 및상기 차광층 및 상기 봉지층 상에 배치된 컬러 필터층을 포함하는 차량용 표시장치.
- 제1 항에 있어서,상기 금속 산화물층은 상기 봉지층의 상면 및 상기 차광층의 하면과 접촉하는 차량용 표시 장치.
- 제1 항에 있어서,상기 금속 산화물층은 티타늄 산화물, 아연 산화물 및 탄탈륨 산화물 중 선택된 어느 하나 이상을 포함하는 차량용 표시 장치.
- 제1 항에 있어서,상기 금속 산화물층의 두께는 10 내지 10000nm인 차량용 표시 장치.
- 제1 항에 있어서,상기 금속 산화물층은 상기 복수의 개구부들과 중첩하는 복수의 개구홀을 포함하는 차량용 표시 장치.
- 제5 항에 있어서,상기 금속 산화물층의 상기 개구홀의 크기는 상기 화소 정의막의 상기 개구부의 크기와 동일한 차량용 표시 장치.
- 제5 항에 있어서,상기 금속 산화물층의 상기 개구홀의 크기는 상기 화소 정의막의 상기 개구부의 크기보다 크고, 상기 금속 산화물층의 폭은 상기 화소 정의막의 폭보다 작은 차량용 표시 장치.
- 제7 항에 있어서,상기 금속 산화물층의 측변은 상기 차광층의 측변보다 내측에 배치되고, 상기 차광층은 상기 금속 산화물층의 상면 및 측변을 덮는 차량용 표시 장치.
- 제7 항에 있어서,상기 차광층은 상기 복수의 개구부와 중첩하는 복수의 홀을 포함하며,상기 금속 산화물층의 상기 개구홀의 크기는 상기 차광층의 상기 홀의 크기보다 큰 차량용 표시 장치.
- 제5 항에 있어서,상기 차광층은 상기 복수의 개구부와 중첩하는 복수의 홀을 포함하며,상기 금속 산화물층의 상기 개구홀의 크기는 상기 차광층의 상기 홀의 크기보다 작은 차량용 표시 장치.
- 제10 항에 있어서,상기 금속 산화물층의 측변은 상기 차광층의 측변보다 외측으로 돌출되고, 상기 금속 산화물층의 폭은 상기 차광층의 폭보다 큰 차량용 표시 장치.
- 제5 항에 있어서,상기 차광층은 상기 복수의 개구부와 중첩하는 복수의 홀을 포함하며,상기 금속 산화물층의 상기 개구홀의 크기는 상기 차광층의 상기 홀의 크기와 동일한 차량용 표시 장치.
- 제12 항에 있어서,상기 금속 산화물층의 측변은 상기 차광층의 측변과 상호 정렬되어 일치되는 차량용 표시 장치.
- 제1 항에 있어서,상기 화소 정의막은 상기 화소 전극들 사이에 배치된 복수의 화소 개구부를 포함하고, 상기 차광층은 상기 복수의 화소 개구부와 중첩하는 복수의 패턴 개구부를 포함하는 차량용 표시 장치.
- 제1 항에 있어서,상기 금속 산화물층의 측변은 상기 화소 정의막의 측변과 상호 정렬되어 일치되며, 상기 금속 산화물층의 폭은 상기 화소 정의막의 폭과 동일한 차량용 표시 장치.
- 대시보드, 및 상기 대시보드에 배치되어 정보를 표시하는 차량용 표시 장치를 포함하는 차량에 있어서,상기 차량용 표시 장치는,기판;상기 기판 상에 배치되며, 화소 전극, 유기막층 및 공통 전극을 포함하는 발광 소자층;상기 기판 상에 배치되며, 상기 화소 전극의 일부를 노출하는 복수의 개구부들을 포함하는 화소 정의막;상기 발광 소자층 상에 배치된 봉지층;상기 봉지층 내에 배치되며, 상기 화소 정의막과 중첩하는 금속 산화물층;상기 봉지층 상에 배치되며, 상기 금속 산화물층과 중첩하는 차광층; 및상기 차광층 및 상기 봉지층 상에 배치된 컬러 필터층을 포함하는 차량.
- 제16 항에 있어서,상기 봉지층은 상기 발광 소자층 상에 배치된 제1 봉지층, 상기 제1 봉지층 상에 배치된 제2 봉지층, 및 상기 제2 봉지층 상에 배치된 제3 봉지층을 포함하는 차량.
- 제17 항에 있어서,상기 금속 산화물층은 상기 제2 봉지층과 상기 제3 봉지층 사이에 배치되는 차량.
- 제17 항에 있어서,상기 금속 산화물층은 상기 제1 봉지층과 상기 제2 봉지층 사이에 배치되는 차량.
- 제16 항에 있어서,상기 금속 산화물층은 티타늄 산화물, 아연 산화물 및 탄탈륨 산화물 중 선택된 어느 하나 이상을 포함하는 차량.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP24819532.3A EP4727315A1 (en) | 2023-06-08 | 2024-05-29 | Display device for vehicle and vehicle comprising same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020230073397A KR20240174883A (ko) | 2023-06-08 | 2023-06-08 | 차량용 표시 장치 및 이를 포함하는 차량 |
| KR10-2023-0073397 | 2023-06-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024253380A1 true WO2024253380A1 (ko) | 2024-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2024/007337 Ceased WO2024253380A1 (ko) | 2023-06-08 | 2024-05-29 | 차량용 표시 장치 및 이를 포함하는 차량 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20240414959A1 (ko) |
| EP (1) | EP4727315A1 (ko) |
| KR (1) | KR20240174883A (ko) |
| CN (2) | CN222621548U (ko) |
| WO (1) | WO2024253380A1 (ko) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180076688A (ko) * | 2016-12-28 | 2018-07-06 | 엘지디스플레이 주식회사 | 표시 장치 |
| KR20200110505A (ko) * | 2019-03-13 | 2020-09-24 | 삼성디스플레이 주식회사 | 디스플레이 장치 |
| KR102190275B1 (ko) * | 2012-08-03 | 2020-12-11 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 발광 소자, 발광 장치 및 전자 기기 |
| KR20210081603A (ko) * | 2019-12-24 | 2021-07-02 | 엘지디스플레이 주식회사 | 유기 발광 표시 장치 |
| KR20220129139A (ko) * | 2021-03-15 | 2022-09-23 | 삼성디스플레이 주식회사 | 표시 장치 |
-
2023
- 2023-06-08 KR KR1020230073397A patent/KR20240174883A/ko active Pending
-
2024
- 2024-03-06 US US18/597,124 patent/US20240414959A1/en active Pending
- 2024-05-29 WO PCT/KR2024/007337 patent/WO2024253380A1/ko not_active Ceased
- 2024-05-29 EP EP24819532.3A patent/EP4727315A1/en active Pending
- 2024-05-31 CN CN202421230269.4U patent/CN222621548U/zh active Active
- 2024-05-31 CN CN202410699320.4A patent/CN119110648A/zh active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102190275B1 (ko) * | 2012-08-03 | 2020-12-11 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 발광 소자, 발광 장치 및 전자 기기 |
| KR20180076688A (ko) * | 2016-12-28 | 2018-07-06 | 엘지디스플레이 주식회사 | 표시 장치 |
| KR20200110505A (ko) * | 2019-03-13 | 2020-09-24 | 삼성디스플레이 주식회사 | 디스플레이 장치 |
| KR20210081603A (ko) * | 2019-12-24 | 2021-07-02 | 엘지디스플레이 주식회사 | 유기 발광 표시 장치 |
| KR20220129139A (ko) * | 2021-03-15 | 2022-09-23 | 삼성디스플레이 주식회사 | 표시 장치 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN222621548U (zh) | 2025-03-14 |
| CN119110648A (zh) | 2024-12-10 |
| EP4727315A1 (en) | 2026-04-15 |
| US20240414959A1 (en) | 2024-12-12 |
| KR20240174883A (ko) | 2024-12-18 |
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