Display device

Abstract

A display panel according to an embodiment of the present disclosure may include a substrate, a plurality of light emitting elements disposed on the substrate, and a plurality of color filters disposed to overlap the plurality of light emitting elements. At least one of the plurality of color filters may include light scattering particles for scattering light incident thereon.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to Korean Patent Application No. 10-2024-0117536, filed on August 30, 2024, which is incorporated herein by reference for all purposes as if fully set forth herein. Technical Field

[0003] Embodiments of this disclosure relate to a display device. Background Technology

[0004] Display devices are used in a variety of electronic devices, such as televisions, mobile phones, laptops, and tablets. Display devices include self-emissive organic light-emitting displays (OLEDs) and liquid crystal displays (LCDs) that require a separate light source.

[0005] Meanwhile, an organic light-emitting display device may include an anode, a cathode, and an organic light-emitting layer disposed between the anode and the cathode. In this case, since a metallic material with high reflectivity is used to form the cathode and various lines, external light incident on the display device can be reflected by the metallic material. The reflected external light diffracts or interferes with each other and is emitted back to the outside. For example, a rainbow effect can be caused by the diffraction and interference of externally reflected light and can be perceived as rainbow-like color diffusion on the screen of the display device, thereby reducing the screen visibility of the display device. Summary of the Invention

[0006] Embodiments of this disclosure may provide a display device having a light scattering layer capable of reducing rainbow patterns.

[0007] Embodiments of this disclosure may provide a display device having a color filter capable of reducing rainbow patterns.

[0008] Embodiments of this disclosure may provide a display device having a color filter capable of preventing color mixing.

[0009] Embodiments of this disclosure may provide a display device including a light-emitting element with high reliability.

[0010] A display panel according to an embodiment of the present disclosure may include a substrate, a plurality of light-emitting elements disposed on the substrate, and a plurality of color filters disposed overlapping the plurality of light-emitting elements. At least one of the plurality of color filters may include light-scattering particles for scattering light incident thereon.

[0011] For example, two or more color filters may contain light-scattering particles. The weight percentage of light-scattering particles contained in one of the two or more color filters may be equal to or greater than the weight percentage of light-scattering particles contained in another of the two or more color filters.

[0012] A display device according to an embodiment of the present disclosure may include: a substrate; a plurality of sub-pixels disposed on the substrate; a first light-emitting element disposed on the substrate and included in a first sub-pixel of the plurality of sub-pixels; a second light-emitting element disposed on the substrate and included in a second sub-pixel of the plurality of sub-pixels; a third light-emitting element disposed on the substrate and included in a third sub-pixel of the plurality of sub-pixels; and a light-scattering layer disposed on the first light-emitting element, the second light-emitting element, and the third light-emitting element.

[0013] The light scattering layer may include a first region overlapping with a first light-emitting element, a second region overlapping with a second light-emitting element, and a third region overlapping with a third light-emitting element. At least one of the first, second, and third regions may contain light-scattering particles for scattering light incident thereon.

[0014] For example, the height of each of the first, second, and third regions can vary depending on whether light-scattering particles are present.

[0015] As another example, when two or more regions in the first, second, and third regions contain light-scattering particles, the weight percentage of light-scattering particles contained in one of the two or more regions may differ from the weight percentage of light-scattering particles contained in the other of the two or more regions.

[0016] According to embodiments of this disclosure, a display device having a light scattering layer capable of reducing rainbow patterns can be provided.

[0017] According to embodiments of this disclosure, a display device having a color filter capable of reducing rainbow patterns can be provided.

[0018] According to embodiments of this disclosure, a display device having a color filter capable of preventing color mixing can be provided.

[0019] According to embodiments of this disclosure, a display device including a light-emitting element with advanced reliability can be provided.

[0020] According to embodiments of the present disclosure, a highly efficient display device can be provided that can achieve a desired or higher level of brightness with low power consumption by omitting a polarizer in the display panel.

[0021] According to embodiments of this disclosure, a light-scattering layer can be applied to a color filter. Therefore, since it is not necessary to form the light-scattering layer through a separate process, a display device with process optimization can be provided. Attached Figure Description

[0022] The above and other objects, features and advantages of this disclosure will become clearer from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0023] Figure 1 A display device according to an embodiment of the present disclosure is shown;

[0024] Figure 2 A display panel according to an embodiment of the present disclosure is shown;

[0025] Figure 3 This is a partial cross-sectional view of a display panel according to an embodiment of the present disclosure;

[0026] Figure 4 A portion of the display area of ​​a display panel according to an embodiment of the present disclosure is shown;

[0027] Figures 5 to 8 This illustrates the display panel along the edge according to an embodiment of the present disclosure. Figure 4 A cross-sectional view of multiple sub-pixels intercepted by line II′;

[0028] Figure 9 A type of light-scattering particles included in a display panel according to an embodiment of the present disclosure is shown;

[0029] Figures 10 to 12 This illustrates the display panel along the edge according to an embodiment of the present disclosure. Figure 4 A cross-sectional view of multiple sub-pixels intercepted by line II′;

[0030] Figure 13 A type of light-scattering particles included in a display panel according to an embodiment of the present disclosure is shown;

[0031] Figures 14 to 16 This illustrates the display panel along the edge according to an embodiment of the present disclosure. Figure 4 A cross-sectional view of multiple sub-pixels intercepted by line II′;

[0032] Figure 17 This illustrates the display panel along the edge according to an embodiment of the present disclosure. Figure 4 A cross-sectional view of multiple sub-pixels including the functional color filter, captured by line II′; and

[0033] Figure 18 This illustrates the display panel along the edge according to an embodiment of the present disclosure. Figure 4A cross-sectional view of multiple sub-pixels intercepted by line II′. Detailed Implementation

[0034] In the following description of examples or embodiments of this disclosure, reference will be made to the accompanying drawings, which illustrate specific examples or embodiments that may be implemented, and the same reference numerals and symbols may be used to denote the same or similar components, even when they are shown in different drawings. Furthermore, in the following description of examples or embodiments of this disclosure, a detailed description of well-known functions and components incorporated herein will be omitted where it is determined that such detailed description may make the subject matter of some embodiments of this disclosure considerably unclear. Terms such as “comprising,” “having,” “including,” “constituting,” “made of,” “composed of,” and “formed from” as used herein are generally intended to allow for the addition of additional components, unless these terms are used in conjunction with the term “only.” As used herein, singular forms are intended to include plural forms unless the context clearly indicates otherwise.

[0035] This document may use terms such as “first,” “second,” “A,” “B,” “(A),” or “(B)” to describe the elements of this disclosure. Each of these terms is not used to define the nature, order, sequence, or number of the elements, but only to distinguish the corresponding element from the other elements.

[0036] When referring to a first element being “connected or coupled to” a second element, or “in contact with or overlapping” the second element, it should be interpreted as meaning that not only can the first element be “directly connected or coupled to” the second element or “directly in contact with or overlapping” the second element, but a third element can also be “inserted” between the first and second elements, or the first and second elements can be “connected or coupled to”, “in contact with or overlapping” each other via a fourth element. Here, the second element can be included in at least one of two or more elements that are “connected or coupled to”, “in contact with or overlapping” each other.

[0037] When time-relative terms such as “after,” “following,” “subsequently,” or “before” are used to describe the process or operation of an element or configuration, or the flow or steps in an operation, processing, or manufacturing method, these terms may be used to describe discontinuous or non-sequential processes or operations, unless used with the terms “directly” or “immediately after.”

[0038] Furthermore, when referring to any size, relative size, etc., it should be assumed that the numerical values ​​of the component or feature or corresponding information (e.g., level, range, etc.) include tolerances or error ranges that may arise from various factors (e.g., process factors, internal or external influences, noise, etc.) even without a specified description. Additionally, the term "may" fully encompasses all the meanings of the term "may (can)".

[0039] Various embodiments of this disclosure are described in detail below with reference to the accompanying drawings.

[0040] Figure 1 A display device according to an embodiment of the present disclosure is shown.

[0041] Reference Figure 1 The display device 100 according to embodiments of the present disclosure may include a display panel 110 and a display driving circuit as components for displaying images. The display driving circuit may be a circuit for driving the display panel 110. The display driving circuit may include a data driving circuit 120, a gate driving circuit 130, and a controller 140, but is not limited thereto.

[0042] The display panel 110 may include a substrate 111 and a plurality of sub-pixels SP disposed on the substrate 111.

[0043] The substrate 111 may include a display area DA and a non-display area NDA.

[0044] The display area DA is the area where images can be displayed, and it can also be called the active area. Multiple sub-pixels SP used for image display can be set in the display area DA.

[0045] The non-display area NDA is the area where no image is displayed and can be located outside the display area DA. The non-display area NDA can also be referred to as a border (or border area). The non-display area NDA may include pad areas where drive circuitry is connected or bonded (or attached).

[0046] The display device 100 according to the embodiments of the present disclosure may be a self-emitting display device in which the display panel 110 emits light itself, but the embodiments of the present disclosure are not limited thereto. When the display device 100 according to the embodiments of the present disclosure is a self-emitting display device, each of the plurality of sub-pixels SP may include a light-emitting element.

[0047] For example, the display device 100 according to an embodiment of the present disclosure may be an organic light-emitting diode (OLED) display, wherein the light-emitting element is implemented as an organic light-emitting diode (OLED). As another example, the display device 100 according to an embodiment of the present disclosure may be an inorganic light-emitting display device, wherein the light-emitting element is implemented as a light-emitting diode based on inorganic materials. As another example, the display device 100 according to an embodiment of the present disclosure may be a quantum dot display device, wherein the light-emitting element is implemented as a quantum dot, which is a self-emitting semiconductor crystal. As another example, the display device 100 according to an embodiment of the present disclosure may be a micro-LED display device or a mini-LED display device.

[0048] The structure of each of the plurality of sub-pixels SP can vary depending on the type of display device 100. For example, when the display device 100 is a self-emitting display device in which the sub-pixels SP emit light by themselves, each sub-pixel SP may include a light-emitting element that emits light by itself, one or more transistors, and one or more capacitors, but the embodiments disclosed herein are not limited thereto.

[0049] Various types of signal lines for driving multiple sub-pixels SP can be disposed on the substrate 111 of the display panel 110. For example, the various types of signal lines may include multiple data lines DL for transmitting data signals (also referred to as data voltage or image signals) and multiple gate lines GL for transmitting gate signals (also referred to as scan signals).

[0050] Multiple data lines DL and multiple gate lines GL may intersect each other. Each of the multiple data lines DL may be configured to extend along a column direction. Each of the multiple gate lines GL may be configured to extend along a row direction. According to embodiments of this disclosure, the column direction and the row direction may be relative directions. For example, depending on the viewpoint, the column direction may be the row direction, and depending on the viewpoint, the row direction may be the column direction. For ease of description, an example is described below in which each of the multiple data lines DL is configured along a column direction and each of the multiple gate lines GL is configured along a row direction, but embodiments of this disclosure are not limited thereto. In embodiments of this disclosure, the angle between the row direction and the column direction may be 90 degrees, or may be an angle other than 90 degrees. Furthermore, in embodiments of this disclosure, the row direction may be referred to as a first direction, and the column direction may be referred to as a second direction.

[0051] The data driving circuit 120 can be a circuit used to drive multiple data lines DL, and can output data signals to multiple data lines DL.

[0052] The data drive circuit 120 can receive digital image data DATA from the controller 140, and can convert the received digital image data DATA into analog data signals (or data voltages) and output them to multiple data lines DL.

[0053] For example, the data driving circuit 120 can be connected to the display panel 110 via the tape automatic bonding (TAB) method, or to the pads of the display panel 110 via the chip on glass (COG) or chip on panel (COP) method, or it can be implemented and connected to the display panel 110 via the chip on film (COF) method, but the embodiments of this disclosure are not limited thereto.

[0054] The data driving circuit 120 can be connected to one side of the display panel 110 (e.g., the top or bottom side). As another example, depending on the driving scheme or panel design, multiple data driving circuits 120 can be connected to both sides of the display panel 110 (e.g., both the top and bottom sides), or to two or more of the four sides of the display panel 110.

[0055] The data driving circuit 120 may be connected outside the display area DA of the display panel 110, but as another example, the data driving circuit 120 may be located in the display area DA of the display panel 110.

[0056] The gate drive circuit 130 is used to drive multiple gate lines GL and can output gate signals to multiple gate lines GL.

[0057] The gate drive circuit 130 can receive a first gate voltage corresponding to an on-state voltage (or also referred to as an on-level voltage) and a second gate voltage corresponding to an off-state voltage (or also referred to as an off-level voltage) from the controller 140, along with various gate drive control signals GCS, to generate a gate signal comprising a portion having the first gate voltage and a portion having the second gate voltage, lasting for a predetermined time (e.g., one frame time), and provides the generated gate signal to multiple gate lines GL. For example, the on-state voltage can be a high-level voltage, and the off-state voltage can be a low-level voltage. As another example, the on-state voltage can be a low-level voltage, and the off-state voltage can be a high-level voltage.

[0058] In the display device 100 according to an embodiment of the present disclosure, the gate driving circuit 130 may be embedded in the display panel 110 (in the in-panel gate type), but the embodiments of the present disclosure are not limited thereto. When the gate driving circuit 130 is of the in-panel gate type, the gate driving circuit 130 may be formed on the substrate 111 of the display panel 110 during the manufacturing process of the display panel 110.

[0059] For example, the gate drive circuit 130 may be disposed in the non-display area NDA of the display panel 110.

[0060] As another example, the gate driving circuit 130 may be disposed in the display area DA of the display panel 110. For example, the gate driving circuit 130 may be disposed in a first portion of the display area DA (e.g., the left or right portion of the display area DA). As another example, the gate driving circuit 130 may be disposed in a first portion of the display area DA (e.g., the left or right portion of the display area DA) and a second portion of the display area DA (e.g., the right or left portion of the display area DA). As another example, the gate driving circuit 130 may be disposed over the entire display area DA.

[0061] When the gate driving circuit 130 is disposed in the display area DA of the display panel 110, the gate driving circuit 130 may vertically overlap with the sub-pixels SP disposed in the display area DA. For example, the gate driving circuit 130 may vertically overlap with the light-emitting elements and transistors included in the sub-pixels SP disposed in the display area DA. The gate driving circuit 130 may vertically overlap with multiple light-emitting elements and multiple transistors included in multiple sub-pixels SP disposed in the display area DA. The gate driving circuit 130 may include multiple transistors. Each of the multiple transistors included in the gate driving circuit 130 may include an active layer comprising a first semiconductor material, and each of the multiple transistors included in the sub-pixels SP may include an active layer comprising a second semiconductor material. For example, the first semiconductor material and the second semiconductor material may be substantially the same. As another example, the first semiconductor material and the second semiconductor material may be different from each other. For example, the first semiconductor material may be a silicon-based semiconductor material (e.g., low-temperature polycrystalline silicon), and the second semiconductor material may be an oxide semiconductor material. For example, the active layer may be, but is not limited to, a semiconductor layer.

[0062] The controller 140 is a device for controlling the data driving circuit 120 and the gate driving circuit 130, and can control the driving timing of multiple data lines DL and multiple gate lines GL.

[0063] The controller 140 can provide a data drive control signal DCS to the data drive circuit 120 to control the data drive circuit 120, and can provide a gate drive control signal GCS to the gate drive circuit 130 to control the gate drive circuit 130.

[0064] The controller 140 can receive input image data from the host system 150 and provide digital image data DATA to the data drive circuit 120 based on the input image data.

[0065] The controller 140 may be implemented as a separate component from the data drive circuit 120, or the controller 140 and the data drive circuit 120 may be integrated into an integrated circuit (IC).

[0066] The controller 140 may be a timing controller used in display technology, a control device capable of performing other control functions and the functions of a timing controller, or a control device other than a timing controller, or it may be a circuit in a control device. The controller 140 may be implemented as various circuits or electronic components, such as integrated circuits (ICs), field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), or processors, but is not limited thereto.

[0067] The controller 140 can be mounted on a printed circuit board or flexible printed circuit and can be electrically connected to the data drive circuit 120 and the gate drive circuit 130 via the printed circuit board or flexible printed circuit.

[0068] The controller 140 can send / receive signals to / from the data drive circuit 120 according to one or more predetermined interfaces. The interfaces may include, for example, a low-voltage differential signaling (LVDS) interface, an embedded clock point-to-point interface (EPI), and a serial peripheral interface (SPI), but embodiments of this disclosure are not limited thereto.

[0069] To provide touch sensing and image display functions, the display device 100 according to embodiments of the present disclosure may include a touch sensor and a touch sensing circuit, wherein the touch sensing circuit senses the touch sensor to detect whether a touch occurs by a touch object (such as a finger or a pen) or the location of the touch.

[0070] Touch sensing circuitry may include touch driver circuitry that drives and senses touch sensors and generates and outputs touch sensing data, as well as touch controllers that can use the touch sensing data to detect the occurrence of a touch or the location of a touch.

[0071] A touch sensor may include multiple touch electrodes. A touch sensor may also include multiple touch lines for electrically connecting the multiple touch electrodes and touch driving circuitry.

[0072] The touch sensor can exist outside the display panel 110 in the form of a touch panel, or it can exist inside the display panel 110. When the touch panel exists outside the display panel 110 in the form of a touch panel, the touch panel is of the external type. When the touch sensor is of the external type, the touch panel and the display panel 110 can be manufactured separately or can be combined during assembly. The external type touch panel may include a touch panel substrate and multiple touch electrodes located on the touch panel substrate.

[0073] When a touch sensor is present inside the display panel 110, the touch sensor can be formed on the substrate 111 together with signal lines and electrodes related to display driving during the manufacturing process of the display panel 110.

[0074] The touch driving circuit can provide a touch driving signal to at least one of a plurality of touch electrodes, and can sense at least one of the plurality of touch electrodes to generate touch sensing data.

[0075] Touch sensing circuits can perform touch sensing using either self-capacitance sensing or mutual-capacitance sensing.

[0076] When a touch sensing circuit performs touch sensing using a self-capacitance sensing scheme, it can perform touch sensing based on the capacitance between each touch electrode and the touch object (e.g., a finger or pen). According to the self-capacitance sensing scheme, each of the multiple touch electrodes can be used as both a driving touch electrode and a sensing touch electrode. The touch driving circuit can drive all or some of the multiple touch electrodes and sense all or some of the multiple touch electrodes.

[0077] When a touch sensing circuit performs touch sensing using a mutual capacitance sensing scheme, it can perform touch sensing based on the capacitance between the touch electrodes. According to the mutual capacitance sensing scheme, multiple touch electrodes are divided into driving touch electrodes and sensing touch electrodes. The touch driving circuit can drive the driving touch electrodes and sense the sensing touch electrodes.

[0078] The touch driver circuit and touch controller included in the touch sensing circuit can be implemented as separate devices or a single device. The touch driver circuit and data driver circuit can be implemented as separate devices or a single device.

[0079] The display device 100 may also include a power supply circuit for providing various types of power to the display driver integrated circuit and / or touch sensing circuit. The power supply circuit may provide various voltages and power voltages related to display driving to the display driver circuit or the display panel 110.

[0080] The display device 100 according to embodiments of the present disclosure may be a mobile terminal, such as a smartphone or tablet computer, or a monitor or television (TV) of various sizes, but is not limited thereto, and may be a display of various types and sizes capable of displaying information or images.

[0081] The display device 100 according to embodiments of the present disclosure may further include electronic devices such as cameras (image sensors), detection sensors, etc. For example, the detection sensor may be a sensor that detects objects or human bodies by receiving light such as infrared, ultrasonic, or ultraviolet light, but embodiments of the present disclosure are not limited thereto.

[0082] Figure 2 A display panel 110 according to an embodiment of the present disclosure is shown.

[0083] Reference Figure 2 The display panel 110 may include a substrate 111, a plurality of sub-pixels SP disposed on the substrate 111, and an encapsulation layer 200 located on the substrate 111. The encapsulation layer 200 may also be referred to as an encapsulation substrate or an encapsulation unit.

[0084] Reference Figure 2When the display device 100 according to an embodiment of the present disclosure is a self-emissive display device, each of the plurality of sub-pixels SP disposed on the substrate 111 may include a light-emitting element ED and a sub-pixel circuit SPC for driving the light-emitting element ED.

[0085] Reference Figure 2 The sub-pixel circuit SPC may include a plurality of transistors for driving the light-emitting element ED and at least one capacitor, but embodiments of this disclosure are not limited thereto. In this disclosure, the sub-pixel circuit SPC can drive the light-emitting element ED by providing a drive current to the light-emitting element ED in a predetermined timing sequence. The light-emitting element ED can be driven by the drive current to emit light.

[0086] The multiple transistors may include a driving transistor DT for driving the light-emitting element ED and a scanning transistor ST that is turned on or off according to the scanning signal SC.

[0087] The driving transistor DT can provide driving current to the light-emitting element ED.

[0088] The scanning transistor ST can be configured to control the electrical state of the corresponding node in the sub-pixel circuit SPC or to control the state or operation of the drive transistor DT.

[0089] At least one capacitor may include a storage capacitor Cst for maintaining a constant voltage during a frame.

[0090] To drive the sub-pixel SP, a data signal VDATA as an image signal and a scan signal SC as a gate signal can be applied to the sub-pixel SP. Furthermore, to drive the sub-pixel SP, a common drive signal including a drive voltage VDD and a base voltage VSS can be applied to the sub-pixel SP.

[0091] The light-emitting element ED may include a pixel electrode PE, a light-emitting unit EL, and a common electrode CE. The light-emitting unit EL may be disposed between the pixel electrode PE and the common electrode CE.

[0092] For example, a pixel electrode PE can be an electrode disposed in each sub-pixel SP, and a common electrode CE can be an electrode commonly disposed in all sub-pixels SP. For example, the pixel electrode PE can be an anode, and the common electrode CE can be a cathode. As another example, the pixel electrode PE can be a cathode, and the common electrode CE can be an anode. In the following description, for ease of description, an example in which the pixel electrode PE is an anode and the common electrode CE is a cathode is described.

[0093] When the light-emitting element ED is an organic light-emitting element, the light-emitting unit EL may include a light-emitting layer EML, a first common intermediate layer COM1 located between the pixel electrode PE and the light-emitting layer EML, and a second common intermediate layer COM2 located between the light-emitting layer EML and the common electrode CE. The first common intermediate layer COM1 and the second common intermediate layer COM2 may be collectively referred to as the common intermediate layer EL_COM.

[0094] The emissive layer EML can be set for each sub-pixel SP. The common intermediate layer EL_COM can be set together to span multiple sub-pixels SP, but embodiments of this disclosure are not limited thereto.

[0095] The emissive layer EML can be configured for each emitting region (also referred to as the light-emitting area). A common intermediate layer EL_COM can be configured to span multiple emitting and non-emitting regions, but embodiments of this disclosure are not limited thereto. For example, the common intermediate layer EL_COM can be configured within a portion of the non-display area NDA.

[0096] For example, the first common intermediate layer COM1 may include a hole injection layer HIL, an electron blocking layer EBL, and a hole transport layer HTL, but the embodiments of this disclosure are not limited thereto. The second common intermediate layer COM2 may include an electron transport layer ETL, a hole blocking layer HBL, and an electron injection layer EIL, but the embodiments of this disclosure are not limited thereto.

[0097] The hole injection layer (HIL) injects holes from the pixel electrode (PE) into the hole transport layer (HTL), which then transports the holes to the light-emitting layer (EML). The electron injection layer (EIL) injects electrons from the common electrode (CE) into the electron transport layer (ETL), which then transports the electrons to the light-emitting layer (EML).

[0098] For example, the common electrode CE can be electrically connected to the base voltage line VSSL. As a type of common drive signal, the base voltage VSS can be applied to the common electrode CE through the base voltage line VSSL. The pixel electrode PE can be electrically connected directly or indirectly (through another transistor) to the first node Na of the drive transistor DT of each sub-pixel SP. In this disclosure, "base voltage VSS" may also be referred to as "low potential power supply voltage" or "low potential voltage," and "base voltage line VSSL" may also be referred to as "low potential power supply voltage line" or "low potential voltage line."

[0099] Each light-emitting element (ED) may include the overlapping portion of a pixel electrode (PE), a light-emitting layer (EML) in a light-emitting unit (EL), and a common electrode (CE). A predetermined light-emitting region (i.e., an emission region) can be formed by each ED. For example, the light-emitting region of each ED may include the overlapping region of the pixel electrode (PE), the light-emitting layer (EML) in the light-emitting unit (EL), and the common electrode (CE).

[0100] For example, the light-emitting element ED can be an organic light-emitting diode (OLED), an inorganic light-emitting diode (LED), a quantum dot light-emitting element, a micro LED, or a mini LED, but the embodiments disclosed herein are not limited thereto. For example, when the light-emitting element ED is an organic light-emitting diode (OLED), the light-emitting unit EL of the light-emitting element ED may include a light-emitting unit EL containing organic materials.

[0101] The driving transistor DT can be used to provide driving current to the light-emitting element ED. The driving transistor DT can be connected between the driving voltage line VDDL and the light-emitting element ED.

[0102] The driving transistor DT may include a first node Na, a second node Nb, and a third node Nc. The first node Na may be electrically connected to the light-emitting element ED, the second node Nb may receive the data signal VDATA, and the third node Nc may receive the driving voltage VDD from the driving voltage line VDDL. The driving transistor DT may be connected to the first node Na and the third node Nc.

[0103] In the driving transistor DT, the second node Nb can be a gate node, the first node Na can be a source node or a drain node, and the third node Nc can be a drain node or a source node. In the following description, for ease of description, an example is described in which the second node Nb in the driving transistor DT can be a gate node, the first node Na can be a source node, and the third node Nc can be a drain node, but the embodiments of this disclosure are not limited thereto.

[0104] Figure 2 The scanning transistor ST included in the sub-pixel circuit SPC shown can be a switching transistor used to transmit the data signal VDATA, which is an image signal, to the second node Nb, which is the gate node of the driving transistor DT.

[0105] The scanning transistor ST can be turned on and off by the scan signal SC, thereby controlling the electrical connection between the second node Nb of the driving transistor DT and the data line DL. The scan signal SC is a gate signal applied through the scan line SCL (which is a type of gate line GL). The drain or source electrode of the scanning transistor ST can be electrically connected to the data line DL, the source or drain electrode of the scanning transistor ST can be electrically connected to the second node Nb of the driving transistor DT, and the gate electrode of the scanning transistor ST can be electrically connected to the scan line SCL.

[0106] The storage capacitor Cst can be electrically connected between the first node Na and the second node Nb of the driving transistor DT. The storage capacitor Cst may include a first capacitor electrode electrically connected to or corresponding to the first node Na of the driving transistor DT, and a second capacitor electrode electrically connected to or corresponding to the second node Nb of the driving transistor DT.

[0107] The storage capacitor Cst can be an external capacitor that is intentionally designed to be outside the driving transistor DT, rather than a parasitic capacitor (e.g., a gate-source capacitor Cgs or a gate-drain capacitor Cgd) that can exist between the first node Na and the second node Nb of the driving transistor DT, but the embodiments of this disclosure are not limited thereto.

[0108] Each of the driving transistor DT and the scanning transistor ST can be an n-type transistor or a p-type transistor, but the embodiments disclosed herein are not limited thereto. For example, one of the driving transistor DT and the scanning transistor ST can be an n-type transistor or a p-type transistor.

[0109] The display panel 110 may have a top-emitting structure or a bottom-emitting structure.

[0110] When the display panel 110 has a top-emitting structure, at least a portion of the sub-pixel circuit SPC can overlap with at least a portion of the light-emitting element ED in the vertical direction. Therefore, the area of ​​the emitting region can be increased and the aperture ratio can be increased.

[0111] When the display panel 110 has a bottom-emitting structure, the sub-pixel circuit SPC can be designed not to overlap with the light-emitting element ED in the vertical direction.

[0112] like Figure 2 As shown, the sub-pixel circuit SPC can have a 2T (transistor) 1C (capacitor) structure, which includes two transistors (i.e., the drive transistor DT and the scan transistor ST) and one capacitor (i.e., the storage capacitor Cst). In some cases, the sub-pixel circuit SPC may also include one or more transistors or one or more capacitors.

[0113] For example, the subpixel circuit SPC may have an 8T1C structure including 8 transistors and 1 capacitor. As another example, the subpixel circuit SPC may have a 6T2C structure including 6 transistors and 2 capacitors. As yet another example, the subpixel circuit SPC may have a 7T1C structure including 7 transistors and 1 capacitor. However, the embodiments of this disclosure are not limited thereto.

[0114] Depending on the structure of the sub-pixel circuit SPC, the type and number of gate lines or gate signals provided to the sub-pixel SP can vary. Furthermore, the type and number of common drive signals provided to the sub-pixel SP can also vary depending on the structure of the sub-pixel circuit SPC.

[0115] Since the circuit elements in each sub-pixel SP (e.g., light-emitting elements ED implemented as organic light-emitting diodes (OLEDs) containing organic materials) are susceptible to external moisture or oxygen, an encapsulation layer 200 may be provided in the display panel 110. The encapsulation layer 200 prevents external moisture or oxygen from penetrating into the circuit elements (e.g., the light-emitting elements ED). The encapsulation layer 200 can be configured in various ways to prevent the light-emitting elements ED from contacting moisture or oxygen. For example, the encapsulation layer 200 may consist of two or more layers in which organic and inorganic films are alternately stacked, but embodiments of this disclosure are not limited thereto.

[0116] Reference Figure 2 The display device 100 according to an embodiment of the present disclosure may include: a touch sensor layer 210 including a plurality of sensor electrodes for sensing a user's touch; a touch driving circuit 220 configured to sense the plurality of sensor electrodes; and a touch controller 230 configured to use the sensing results (touch sensing data) of the touch driving circuit 220 to determine the presence or absence of a touch or touch coordinates.

[0117] The touch sensor layer 210 can be embedded in the display panel 110. For example, the touch sensor layer 210 can be disposed on the encapsulation layer 200 in the display panel 110. The touch sensor layer 210 can be a touch unit.

[0118] The display panel 110 may also include a plurality of touch pads TP electrically connected to the touch driving circuit 220 and a plurality of touch lines TL for electrically connecting a plurality of sensor electrodes included in the touch sensor layer 210 to the plurality of touch pads TP connected to the touch driving circuit 220.

[0119] Figure 3 This is a partial cross-sectional view of a display panel 110 according to an embodiment of the present disclosure.

[0120] Reference Figure 3The display panel 110 according to the embodiments of the present disclosure may include transistor units, light-emitting element portions and packaging portions, but the embodiments of the present disclosure are not limited thereto.

[0121] The substrate 111 may be a single layer or multiple layers. When the substrate 111 includes multiple layers, it may include a first substrate 301, an intermediate substrate layer (or intermediate layer) 302, and a second substrate 303. The intermediate substrate layer 302 may be positioned between the first substrate 301 and the second substrate 303. For example, each of the first substrate 301 and the second substrate 303 may be a polyimide (PI) layer, but the embodiments of this disclosure are not limited thereto. The intermediate substrate layer 302 may be an inorganic insulating layer, but the embodiments of this disclosure are not limited thereto. When charge is applied to the first substrate 301, which is a polyimide layer, the intermediate substrate layer 302 can prevent the charge from affecting the transistor disposed on the second substrate 303 through the second substrate 303, which is also a polyimide layer.

[0122] Furthermore, the intermediate substrate layer 302 can prevent moisture components from penetrating upward through the first substrate 301. For example, the intermediate substrate layer 302 can be formed of a single layer of silicon nitride (SiNx) or silicon oxide (SiOx) or multiple layers thereof, or it can be formed of a double layer of silicon dioxide (SiO2) and silicon nitride (SiNx), but is not limited thereto.

[0123] The intermediate substrate layer 302 may be formed on the front surface of the substrate 111, but is not limited thereto. For example, the intermediate substrate layer 302 may not be formed in a portion of the non-display area NDA. Specifically, the intermediate substrate layer 302 containing inorganic materials may not be formed at locations of stress concentration or where cracking may occur.

[0124] The transistor unit may include a substrate 111, a buffer layer and an insulating layer located on the substrate 111, a thin film transistor, a storage capacitor Cst, and various electrodes or signal lines.

[0125] The thin-film transistors included in the transistor unit may include a first thin-film transistor TFT1 and a second thin-film transistor TFT2.

[0126] The first thin-film transistor TFT1 may include a first active layer ACT1, a first electrode E1a, a second electrode E1b, and a third electrode E1c.

[0127] The first electrode E1a can be a gate electrode, the second electrode E1b can be a source electrode or a drain electrode, and the third electrode E1c can be a drain electrode or a source electrode. In the following description, for ease of description, the first electrode E1a is referred to as the first gate electrode E1a, the second electrode E1b as the first source electrode E1b, and the third electrode E1c as the first drain electrode E1c; however, the embodiments of this disclosure are not limited thereto.

[0128] The first active layer ACT1 may be a first semiconductor material, but the embodiments of this disclosure are not limited thereto. For example, the first semiconductor material may include oxide semiconductor, amorphous silicon, polycrystalline silicon, or low-temperature polycrystalline silicon (LTPS), but the embodiments of this disclosure are not limited thereto. The first thin-film transistor TFT1 may be implemented as a p-channel thin-film transistor or an n-channel thin-film transistor, but the embodiments of this disclosure are not limited thereto.

[0129] The second thin-film transistor TFT2 may include a second active layer ACT2, a fourth electrode E2a, a fifth electrode E2b, and a sixth electrode E2c.

[0130] The fourth electrode E2a can be a gate electrode, the fifth electrode E2b can be a source electrode or a drain electrode, and the sixth electrode E2c can be a drain electrode or a source electrode. In the following description, for ease of description, the fourth electrode E2a is referred to as the second gate electrode E2a, the fifth electrode E2b as the second source electrode E2b, and the sixth electrode E2c as the second drain electrode E2c. However, the embodiments of this disclosure are not limited thereto.

[0131] The second active layer ACT2 can be a second semiconductor material, but the embodiments of this disclosure are not limited thereto. For example, the second semiconductor material may include oxide semiconductor, amorphous silicon, polycrystalline silicon, or low-temperature polycrystalline silicon (LTPS), but the embodiments of this disclosure are not limited thereto. The second thin-film transistor TFT2 can be implemented as a p-channel thin-film transistor or an n-channel thin-film transistor, but the embodiments of this disclosure are not limited thereto.

[0132] For example, one of the first active layer ACT1 of the first thin-film transistor TFT1 and the second active layer ACT2 of the second thin-film transistor TFT2 may contain an oxide semiconductor material. As another example, one of the first active layer ACT1 of the first thin-film transistor TFT1 and the second active layer ACT2 of the second thin-film transistor TFT2 may contain a low-temperature polycrystalline silicon semiconductor material. As another example, the first active layer ACT1 of the first thin-film transistor TFT1 and the second active layer ACT2 of the second thin-film transistor TFT2 may contain an oxide semiconductor material. As another example, the first active layer ACT1 of the first thin-film transistor TFT1 and the second active layer ACT2 of the second thin-film transistor TFT2 may contain a low-temperature polycrystalline silicon semiconductor material. As another example, in the first thin-film transistor TFT1 and the second thin-film transistor TFT2, the first thin-film transistor TFT1 may be configured with an oxide semiconductor as its active layer, and the second thin-film transistor TFT2 may be configured with a low-temperature polycrystalline silicon as its active layer. As another example, in the first thin-film transistor TFT1 and the second thin-film transistor TFT2, the first thin-film transistor TFT1 may be configured with a low-temperature polycrystalline silicon as its active layer, and the second thin-film transistor TFT2 may be configured with an oxide semiconductor as its active layer. As another example, the transistors included in the gate drive circuit 130 of the gate in-panel (GIP) type can be configured with oxide semiconductor or low-temperature polysilicon as the active layer. As another example, all transistors constructed on the substrate 111 and the transistors included in the gate drive circuit 130 of the gate in-panel (GIP) type can be configured with oxide semiconductor as the active layer.

[0133] The second active layer ACT2 of the second thin-film transistor TFT2 can be positioned at a higher position from the substrate 111 than the first active layer ACT1 of the first thin-film transistor TFT1.

[0134] The first buffer layer 311 may be disposed below the first active layer ACT1 of the first thin-film transistor TFT1, and the second buffer layer 321 may be disposed below the second active layer ACT2 of the second thin-film transistor TFT2. For example, the first active layer ACT1 of the first thin-film transistor TFT1 may be positioned on the first buffer layer 311, and the second active layer ACT2 of the second thin-film transistor TFT2 may be positioned on the second buffer layer 321. The second buffer layer 321 may be positioned higher than the first buffer layer 311.

[0135] Storage capacitor Cst can be disposed in various metal layers in the display panel 110. For example, storage capacitor Cst may include a first capacitor electrode CAPE1 and a second capacitor CAPE2.

[0136] The light-emitting element portion may include a plurality of light-emitting elements ED disposed on a planarization layer 330 (which will be described in detail below). Each of the plurality of light-emitting elements ED may include a pixel electrode PE, a light-emitting unit EL, and a common electrode CE.

[0137] The encapsulation portion may include an encapsulation layer 200 located on a plurality of light-emitting elements (EDs). The encapsulation layer 200 may be a single layer or multiple layers, but embodiments of this disclosure are not limited thereto. In addition to the encapsulation layer 200, the encapsulation portion may also include a dam section (DAM).

[0138] Below, refer to Figure 3 The structure or vertical structure of the display panel 110 according to embodiments of the present disclosure will be described in more detail.

[0139] Reference Figure 3 The first buffer layer 311 may be disposed on the substrate 111. The first buffer layer 311 may be a single layer or multiple layers, but the embodiments of this disclosure are not limited thereto. When the first buffer layer 311 includes multiple layers, the first buffer layer 311 may include a lower buffer layer 311a and an upper buffer layer 311b.

[0140] The first active layer ACT1 of the first thin-film transistor TFT1 may be disposed on the first buffer layer 311. The first active layer ACT1 may include a channel region in which a channel is formed, a source connection region located on one side of the channel region, and a drain connection region located on the other side of the channel region.

[0141] A first insulating layer 312 may be disposed on the first active layer ACT1 of the first thin-film transistor TFT1. A first gate electrode E1a of the first thin-film transistor TFT1 may be disposed on the first insulating layer 312. A second insulating layer 313 may be disposed on the first gate electrode E1a of the first thin-film transistor TFT1. The first insulating layer 312 may be a gate insulating layer, but the embodiments of this disclosure are not limited thereto. The second insulating layer 313 may be an interlayer insulating layer, but the embodiments of this disclosure are not limited thereto.

[0142] The second buffer layer 321 may be disposed on the second insulating layer 313.

[0143] The second active layer ACT2 of the second thin-film transistor TFT2 may be disposed on the second buffer layer 321. The second active layer ACT2 may include a channel region in which a channel is formed, a source connection region located on one side of the channel region, and a drain connection region located on the other side of the channel region.

[0144] The third insulating layer 322 may be disposed on the second active layer ACT2 of the second thin-film transistor TFT2. The second gate electrode E2a of the second thin-film transistor TFT2 may be disposed on the third insulating layer 322. The fourth insulating layer 323 may be disposed on the second gate electrode E2a of the second thin-film transistor TFT2. The third insulating layer 322 may be a gate insulating layer, but the embodiments of this disclosure are not limited thereto. The fourth insulating layer 323 may be an interlayer insulating layer, but the embodiments of this disclosure are not limited thereto.

[0145] The first source electrode E1b and the first drain electrode E1c of the first thin-film transistor TFT1, and the second source electrode E2b and the second drain electrode E2c of the second thin-film transistor TFT2 can be disposed on the fourth insulating layer 323.

[0146] The first source electrode E1b and the first drain electrode E1c of the first thin-film transistor TFT1 can be connected to the source connection region and the drain connection region of the first active layer ACT1 through the holes of the fourth insulating layer 323, the third insulating layer 322, the second buffer layer 321, the second insulating layer 313 and the first insulating layer 312, respectively.

[0147] The second source electrode E2b and the second drain electrode E2c of the second thin-film transistor TFT2 can be connected to the source connection region and the drain connection region of the second active layer ACT2 through the holes of the fourth insulating layer 323 and the third insulating layer 322, respectively.

[0148] The first source electrode E1b and the first drain electrode E1c of the first thin-film transistor TFT1, and the second source electrode E2b and the second drain electrode E2c of the second thin-film transistor TFT2, may include a first metal and may be disposed in a first metal layer. Here, the first metal and the first metal layer may be referred to as the first source-drain metal and the first source-drain metal layer.

[0149] Reference Figure 3 For example, the storage capacitor Cst can be formed by a first capacitor electrode CAPE1 and a second capacitor electrode CAPE2. In some cases, the storage capacitor Cst can be formed by three or more capacitor electrodes, or it can have two or more capacitors connected in parallel.

[0150] Each of the first capacitor electrode CAPE1 and the second capacitor electrode CAPE2 can be disposed on a respective metal layer disposed in the display panel 110.

[0151] For example, the first capacitor electrode CAPE1 may include the same first gate metal as the first gate electrode E1a of the first thin-film transistor TFT1 on the first insulating layer 312, and may be disposed in the first gate metal layer, but the embodiments of this disclosure are not limited thereto. For example, the second capacitor electrode CAPE2 may be disposed on the second insulating layer 313.

[0152] The second source electrode E2b of the second thin-film transistor TFT2 can be electrically connected to the second capacitor electrode CAPE2 through the holes in the fourth insulating layer 323, the third insulating layer 322, and the second buffer layer 321.

[0153] For example, when the subpixel SP is configured as follows Figure 2 As shown, the first thin-film transistor TFT1 can be Figure 2 The scanning transistor ST, and the second thin-film transistor TFT2 can be Figure 2 The driving transistor DT.

[0154] The transistor unit may further include a first additional metal layer MP1 and a second additional metal layer MP2. For example, the first additional metal layer MP1 may be disposed between the lower buffer layer 311a and the upper buffer layer 311b included in the first buffer layer 311, but the embodiments of this disclosure are not limited thereto. The second additional metal layer MP2 may include the same first gate metal as the first gate electrode E1a of the first thin-film transistor TFT1, and may be disposed in the first gate metal layer, but the embodiments of this disclosure are not limited thereto. The first additional metal layer MP1 may be a first metal pattern, and the second additional metal layer MP2 may be a second metal pattern, but the embodiments of this disclosure are not limited thereto.

[0155] Each of the first additional metal layer MP1 and the second additional metal layer MP2 can be set in the display area DA or the non-display area NDA.

[0156] Reference Figure 3 The transistor unit may further include a first shielding pattern BSM1 disposed on the substrate 111. The first shielding pattern BSM1 may overlap with the first active layer ACT1 of the first thin-film transistor TFT1. The first shielding pattern BSM1 may be disposed below the first active layer ACT1 of the first thin-film transistor TFT1. For example, the first shielding pattern BSM1 may be disposed between the substrate 111 and the first buffer layer 311, or it may be disposed between the lower buffer layer 311a and the upper buffer layer 311b.

[0157] The transistor unit may further include a second shielding pattern BSM2 disposed on the substrate 111. The second shielding pattern BSM2 may overlap with the second active layer ACT2 of the second thin-film transistor TFT2. The second shielding pattern BSM2 may be disposed below the second active layer ACT2 of the second thin-film transistor TFT2. For example, the second shielding pattern BSM2 may be disposed in a metal layer located between the second insulating layer 313 and the second buffer layer 321. The second shielding pattern BSM2 may be disposed in the same metal layer as the second capacitor electrode CAPE2, but the embodiments of this disclosure are not limited thereto. As another example, the second shielding pattern BSM2 may be disposed in the same first gate metal layer as the first gate electrode E1a of the first thin-film transistor TFT1.

[0158] Reference Figure 3 The transistor unit may also include a common drive signal layer (CVP) for applying a common drive signal to it. The common drive signal layer (CVP) may be located in the display area (DA) or the non-display area (NDA).

[0159] For example, the common drive signal applied to the common drive signal layer CVP may also be referred to as a power signal, and may include at least one of a drive voltage VDD and a base voltage VSS. The drive voltage VDD may be referred to as a high-potential drive voltage (high-potential power supply voltage or high-potential voltage), and the base voltage VSS may be referred to as a low-potential drive voltage (low-potential power supply voltage or low-potential voltage).

[0160] The planarization layer 330 can be disposed on the first thin-film transistor TFT1 and the second thin-film transistor TFT2, and can be disposed below the light-emitting element ED. The planarization layer 330 can be an organic insulating layer containing an organic insulating material.

[0161] For example, planarization layer 330 may consist of a single layer. As another example, planarization layer 330 may include two layers. Planarization layer 330 may include a first planarization layer 331 and a second planarization layer 332. As yet another example, planarization layer 330 may include three or more layers. However, the embodiments disclosed herein are not limited thereto.

[0162] Reference Figure 3 The first planarization layer 331 may be disposed on the first source electrode E1b and the first drain electrode E1c of the first thin-film transistor TFT1 and the second source electrode E2b and the second drain electrode E2c of the second thin-film transistor TFT2. For example, the first planarization layer 331 may be disposed on the first thin-film transistor TFT1 and the second thin-film transistor TFT2. For example, the first planarization layer 331 may be configured to cover both the first thin-film transistor TFT1 and the second thin-film transistor TFT2.

[0163] Reference Figure 3The connection electrode RE can be disposed on the first planarization layer 331. The connection electrode RE can electrically connect the second source electrode E2b of the second thin-film transistor TFT2 to the pixel electrode PE.

[0164] The connection electrode RE can be electrically connected to the second source electrode E2b of the second thin-film transistor TFT2 through the holes in the first planarization layer 331. The second source electrode E2b of the second thin-film transistor TFT2 can be electrically connected to the second capacitor electrode CAPE2 of the storage capacitor Cst.

[0165] The connection electrode RE can be disposed in a second metal layer on the first planarization layer 331, and may include a second metal. The second metal and the second metal layer may be referred to as a second source-drain metal and a second source-drain metal layer.

[0166] The second planarization layer 332 can be disposed on the connecting electrode RE.

[0167] Reference Figure 3 The light-emitting element unit can be disposed on the second planarization layer 332. The light-emitting element ED can be formed on the second planarization layer 332. The light-emitting element ED may include a pixel electrode PE, a light-emitting unit EL, and a common electrode CE. The emitting region of the light-emitting element ED can be formed in the region where the pixel electrode PE, the light-emitting unit EL, and the common electrode CE overlap and contact each other.

[0168] The pixel electrode PE can be disposed on the second planarization layer 332. The pixel electrode PE can be electrically connected to the connection electrode RE through the holes in the second planarization layer 332.

[0169] A dam 340 may be disposed on the pixel electrode PE. An opening in the dam 340 may expose a portion of the pixel electrode PE to form an emission region. The opening in the dam 340 may overlap with a portion of the pixel electrode PE.

[0170] For example, the dam portion 340 may be formed of a material containing black pigment or an organic material such as benzocyclobutene resin, polyimide resin, acrylic resin, or photosensitive polymer, but the embodiments disclosed herein are not limited thereto. When the dam portion 340 is formed of a material containing black pigment, black dye, etc., it may be a black dam portion. When the dam portion 340 is formed of a material containing black pigment or black dye, it may block light from the outside or block light reflected from the outside, thereby further enhancing the brightness of the display device 100.

[0171] The light-emitting unit EL of the light-emitting element ED can be disposed on a portion of the pixel electrode PE and the embankment 340. The common electrode CE can be disposed on the light-emitting unit EL.

[0172] Reference Figure 3The encapsulation portion can be disposed on the light-emitting element unit and positioned on the common electrode CE. The encapsulation portion may include an encapsulation layer 200 formed on the common electrode CE.

[0173] The encapsulation layer 200 prevents moisture or oxygen from penetrating into the light-emitting element ED. For example, the encapsulation layer 200 can prevent moisture or oxygen from penetrating into the organic material contained in the light-emitting unit EL of the light-emitting element ED. The encapsulation layer 200 can be formed of a single layer or multiple layers, but the embodiments disclosed herein are not limited thereto.

[0174] For example, the encapsulation layer 200 may include a first encapsulation layer 341, a second encapsulation layer 342, and a third encapsulation layer 343, but the embodiments of this disclosure are not limited thereto. For example, the first encapsulation layer 341 and the third encapsulation layer 343 may include inorganic layers, and the second encapsulation layer 342 may include an organic layer, but the embodiments of this disclosure are not limited thereto.

[0175] The display panel 110 according to an embodiment of the present disclosure may have a built-in touch sensor. In this case, the display panel 110 according to an embodiment of the present disclosure may include a touch sensor layer 210 formed on the encapsulation layer 200. The touch sensor layer 210 may be a touch unit.

[0176] Reference Figure 3 The touch sensor layer 210 may include a plurality of touch electrodes TE corresponding to the touch sensor, and may include a touch metal layer in which a plurality of touch metals are disposed to form a plurality of touch electrodes TE.

[0177] For example, the touch metal layer may include a first touch metal layer in which a plurality of first touch metals TM1 are disposed and a second touch metal layer in which a plurality of second touch metals TM2 are disposed. In this case, the touch sensor layer 210 may include a touch insulating layer 352 located between the first touch metal layer and the second touch metal layer.

[0178] One of the first touch metal layer and the second touch metal layer can be a sensor metal layer, and the other can be a bridging metal layer.

[0179] For example, the first touch metal layer can be a bridging metal layer, and the second touch metal layer can be a sensor metal layer. In this case, the plurality of second touch metals TM2 disposed in the second touch metal layer can be sensor metals forming a touch sensor, and the plurality of first touch metals TM1 disposed in the first touch metal layer can be bridging metals that electrically connect the plurality of second touch metals TM2 (which are sensor metals).

[0180] As another example, the first touch metal layer can be a sensor metal layer, and the second touch metal layer can be a bridging metal layer. In this case, the plurality of first touch metals TM1 disposed in the first touch metal layer can be sensor metals forming a touch sensor, and the plurality of second touch metals TM2 disposed in the second touch metal layer can be bridging metals electrically connecting the plurality of first touch metals TM1 (which are sensor metals).

[0181] As another example, each of the first touch metal layer and the second touch metal layer can be a sensor metal layer and a bridging metal layer. For example, the first touch metal layer can be a sensor metal layer and a bridging metal layer, and the second touch metal layer can be a sensor metal layer and a bridging metal layer. In this case, the plurality of first touch metals TM1 disposed in the first touch metal layer can include sensor metal and bridging metal, and the plurality of second touch metals TM2 disposed in the second touch metal layer can include sensor metal and bridging metal.

[0182] The touch sensor layer 210 may include at least one insulating layer (or touch insulating layer).

[0183] For example, the touch sensor layer 210 may include a touch insulating layer 352 disposed between a first touch metal layer in which a plurality of first touch metals TM1 are disposed and a second touch metal layer in which a plurality of second touch metals TM2 are disposed. For example, the touch insulating layer 352 may be an inorganic layer containing an inorganic insulating material or an organic layer containing an organic insulating material.

[0184] As another example, the touch sensor layer 210 may also include a touch buffer layer 351 located between the encapsulation layer 200 and the touch metal layer. The touch buffer layer 351 may be disposed between the encapsulation layer 200 and the first touch metal layer in which a plurality of first touch metals TM1 are disposed. Here, the touch buffer layer 351 may be omitted. For example, the touch buffer layer 351 may be an inorganic layer containing an inorganic insulating material or an organic layer containing an organic insulating material.

[0185] As another example, the touch sensor layer 210 may also include a touch protection layer 353 located on the touch metal layer. The touch protection layer 353 may be disposed on a second touch metal layer in which a plurality of second touch metals TM2 are disposed. For example, the touch protection layer 353 may be an inorganic layer containing an inorganic insulating material or an organic layer containing an organic insulating material. The touch protection layer 353 may extend above the touch line TL. The touch protection layer 353 may also extend above the touch pad TP.

[0186] Each of the plurality of touch electrodes TE may be formed of at least one second touch metal TM2. Each of the plurality of touch electrodes TE may be a mesh-type electrode with a plurality of openings, but embodiments of the present disclosure are not limited thereto.

[0187] For example, multiple touch electrodes TE may include a first touch electrode TE1 and a second touch electrode TE2. When the first touch metal layer is a bridging metal layer and the second touch metal layer is a sensor metal layer, two or more second touch metals TM2 forming the first touch electrode TE1 corresponding to the touch sensor can be electrically connected through the first touch metal TM1, which serves as a bridging metal. For example, the second touch metals TM2 spaced apart from each other can be electrically connected through the first touch metal TM1 to form a first touch electrode TE1.

[0188] Multiple first touch metals TM1 can be disposed on the touch buffer layer 351. A touch insulating layer 352 can be disposed on the multiple first touch metals TM1. Multiple second touch metals TM2 can be disposed on the touch insulating layer 352. Some of the multiple second touch metals TM2 can be connected to the corresponding first touch metals TM1 through holes in the touch insulating layer 352.

[0189] Reference Figure 3 Multiple first touch metals TM1 and multiple second touch metals TM2 can be configured not to overlap with the light-emitting element ED. Multiple first touch metals TM1 and multiple second touch metals TM2 can overlap with the embankment 340.

[0190] A touch protection layer 353 may be disposed on a touch metal layer. The touch protection layer 353 may be configured to simultaneously cover a plurality of first touch metals TM1 and a plurality of second touch metals TM2 disposed in the touch metal layer.

[0191] Reference Figure 3 The touch line TL can electrically connect the touch electrode TE and the touch pad TP. The touch line TL can be formed from at least one of a first touch metal TM1 and a second touch metal TM2. For example, the touch line TL can be constructed in at least one of a first touch metal layer and a second touch metal layer. However, the embodiments of this disclosure are not limited thereto.

[0192] The touch line TL can be formed from a first touch metal TM1, or from a second touch metal TM2, or from both the first touch metal TM1 and the second touch metal TM2. When a touch line TL is formed from the first touch metal TM1 and the second touch metal TM2, the first touch metal TM1 and the second touch metal TM2 constituting the touch line TL can be electrically connected through holes in the touch insulating layer 352.

[0193] When the display panel 110 is of the type with an embedded touch sensor, the touch line TL can extend along the outer inclined surface SLP_ENCAP of the package layer 200 and can extend beyond the upper part of at least one dam section DAM and extend to the touch pad TP in the non-display area NDA.

[0194] Figure 4 A portion of a display area DA comprising a plurality of sub-pixels SP is shown in a display panel 110 according to an embodiment of the present disclosure.

[0195] Reference Figure 4 According to embodiments of the present disclosure, a plurality of sub-pixels SP may include a first sub-pixel SP1, a second sub-pixel SP2, and a third sub-pixel SP3.

[0196] The first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 can be set in the display area DA at regular intervals.

[0197] For example, by driving the transistor units and light-emitting element portions of the display panel 110, the first sub-pixel SP1 may include a first emitting region EA1 that emits green (G) light, the second sub-pixel SP2 may include a second emitting region EA2 that emits red (R) light, and the third sub-pixel SP3 may include a third emitting region EA3 that emits blue (B) light. However, embodiments of this disclosure are not limited thereto.

[0198] A light-emitting element ED, included in the first sub-pixel SP1 and emitting green (G) light, may be disposed in the first emission region EA1. A light-emitting element ED, included in the second sub-pixel SP2 and emitting red (R) light, may be disposed in the second emission region EA2. A light-emitting element ED, included in the third sub-pixel SP3 and emitting blue (B) light, may be disposed in the third emission region EA3. In embodiments according to this disclosure, the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 are shown to have the same shape, but this disclosure is not limited thereto. For example, the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 may have a rhomboid shape, a circular shape, etc., and may have different sizes. Furthermore, in embodiments according to this disclosure, the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 are shown to be arranged one after another in a first direction, but this disclosure is not limited thereto. For example, the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 may be arranged in a Z-shaped pattern. Furthermore, each of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 may include a main light-emitting element and a redundant light-emitting element. For example, a light-emitting element ED that emits green (G) light may be disposed in the first sub-pixel SP1. The first sub-pixel SP1 may include a main light-emitting element that emits green (G) light and a redundant light-emitting element that emits green (G) light.

[0199] Figures 5 to 8 This illustrates the display panel along the edge according to an embodiment of the present disclosure. Figure 4 A cross-sectional view of multiple sub-pixels SP intercepted by line II′.

[0200] Figure 5 It shows along Figure 4 The cross-sectional view of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 intercepted by line II′.

[0201] Reference Figure 5 According to embodiments of the present disclosure, a plurality of sub-pixels SP may include a substrate 111, a transistor unit 300, a plurality of light-emitting elements ED, a packaging unit 200, a touch unit 210, a plurality of color filters CF and a black matrix 510, and repeated descriptions of the above components are omitted.

[0202] Multiple color filters CF may include a first color filter CF1, a second color filter CF2, and a third color filter CF3. Light emitted from the first color filter CF1 may have a first wavelength, light emitted from the second color filter CF2 may have a second wavelength different from the first wavelength, and light emitted from the third color filter CF3 may have a third wavelength different from the first and second wavelengths.

[0203] Of the first, second, and third wavelengths, the third wavelength can be the shortest, and the second wavelength can be the longest. The first wavelength can be green light, the second wavelength can be red light, and the third wavelength can be blue light, but this disclosure is not limited thereto. The first, second, and third wavelengths can be peak wavelengths.

[0204] The light-emitting units EL included in the multiple light-emitting elements ED may include a first light-emitting unit EL1 that emits a first light, a second light-emitting unit EL2 that emits a second light, and a third light-emitting unit EL3 that emits a third light.

[0205] The first light can be green, the second light can be red, and the third light can be blue, but this disclosure is not limited to these.

[0206] Each of the multiple sub-pixels SP may include a light-emitting unit EL that emits different light and a color filter CF that emits light with different wavelengths, and each light-emitting unit EL and color filter CF is arranged to overlap each other.

[0207] For example, in a plurality of light-emitting elements ED, the first light-emitting unit EL1 included in the first light-emitting element ED1 may overlap with the first color filter CF1, the second light-emitting unit EL2 included in the second light-emitting element ED2 may overlap with the second color filter CF2, and the third light-emitting unit EL3 included in the third light-emitting element ED3 may overlap with the third color filter CF3.

[0208] The black matrix 510 is configured to overlap with the first touch metal TM1 and to overlap with the boundary between the multiple color filters CF in order to separate each of the multiple color filters CF.

[0209] For example, the black matrix 510 may be formed of an organic insulating material, such as a colored organic resin like an acryloyl resin, epoxy resin, or polyimide resin, containing any of carbon black and black pigments, but this disclosure is not limited thereto.

[0210] Figure 6 This illustrates the display panel 110 according to an embodiment of the present disclosure, along... Figure 4 The image shows a cross-sectional view of multiple sub-pixels SP of the light scattering layer 610, taken from line II′.

[0211] Reference Figure 6 The light scattering layer 610 is disposed between the touch unit 210 and the color filter CF, and may contain light scattering particles 611.

[0212] For example, the light scattering layer 610 may include light scattering particles 611 positioned corresponding to at least one of the plurality of color filters CF. For example, in the light scattering layer 610, the light scattering particles 611 may be positioned in the region overlapping with the first color filter CF1, but may not be positioned in the region overlapping with the second color filter CF2 and the third color filter CF3.

[0213] As another example, in the light scattering layer 610, the weight percentage (wt%) of the light scattering particles 611 can be different for each location. For instance, the weight percentage of light scattering particles 611 located in the region overlapping with the first color filter CF1 and the weight percentage of light scattering particles 611 located in the region overlapping with the second color filter CF2 and the third color filter CF3 can be different in the light scattering layer 610.

[0214] Weight percentage is a method used to express content or concentration, and it can express the mass of a target component in the total mass of an object as a percentage.

[0215] For example, the weight percentage of light scattering particles 611 contained in the light scattering layer 610 of the display panel 110 according to an embodiment of the present disclosure may be the percentage of light scattering particles 611 in the total mass of the light scattering layer 610.

[0216] The light scattering layer 610 can scatter light present in the display panel 110. Since the light scattering layer 610 in the display panel 110 scatters the light incident on it, it can reduce rainbow patterns, which are a type of stain identified in the display device 100.

[0217] External light incident on the display device 100 can be reflected by a metallic material disposed in the display panel 110. For example, a highly reflective metallic material used in thin-film transistors (TFTs), light-emitting elements (EDs), and various lines can reflect external light. The reflected external light diffracts or interferes with each other and is emitted back to the outside, resulting in a rainbow pattern, which is perceived as a rainbow-like color diffusion.

[0218] The light scattering particles 611 contained in the light scattering layer 610 according to embodiments of the present disclosure can scatter external light reflected from the interior of the display panel 110.

[0219] For example, external light reflected by the specular surface of the metal material disposed in the display panel 110 can collide with the light scattering particles 611 and be diffusely reflected. Since the level of the rainbow pattern becomes stronger as the external light is specularly reflected, the light scattering layer 610 can cancel the reflected external light by its diffuse reflection.

[0220] As the rainbow pattern is reduced, the screen visibility of the display device 100 can be enhanced.

[0221] The formation process of the light scattering layer 610 according to an embodiment of the present disclosure is briefly described below.

[0222] After the process of forming the touch unit 210, a light scattering layer 610 is formed on the touch unit 210, and the process of forming the light scattering layer 610 may include a coating step, an exposure step, a development step, and a heat treatment step, but this disclosure is not limited thereto.

[0223] In the coating step, a mixture in which the light-scattering particles 611 are mixed with an organic solvent can be applied to the upper surface of the touch unit 210. For example, for the mixture of light-scattering layer 610, one of spin coating, slot coating, rod coating, roller coating and inkjet coating can be used.

[0224] In the exposure step, the light scattering layer 610 can be cured by irradiating a mixture of light scattering layer 610 applied in a solution state with light such as UV light.

[0225] The development step can be a step of removing or patterning a local area of ​​the cured light scattering layer 610 using a developer.

[0226] The heat treatment step may be a step of applying heat to the display panel 110 after the development step in order to more firmly fix the remaining light scattering layer 610.

[0227] Figure 7 This illustrates the display panel 110 along the edge according to an embodiment of the present disclosure. Figure 4 A cross-sectional view of multiple sub-pixels SP taken from line II′, in which light scattering particles 611 are contained in the color filter CF.

[0228] Reference Figure 7 Two or more of the multiple color filters CF may contain light scattering particles 611.

[0229] According to embodiments of this disclosure, light-scattering particles 611 contained in a plurality of color filters CF can scatter light present in the display panel 110. Since the light-scattering particles 611 scatter the light incident on the display panel 110, rainbow patterns (a type of stain identified by the display device 100) can be reduced.

[0230] Light scattering particles 611 contained in multiple color filters CF can scatter external light reflected from the interior of the display panel 110.

[0231] For example, external light reflected by the specular surface of the metal material disposed in the display panel 110 can collide with the light scattering particles 611 and be diffusely reflected. Since the level of the rainbow pattern becomes stronger as the external light is specularly reflected, the light scattering layer 610 can cancel the reflected external light by diffusely reflecting it.

[0232] As the rainbow pattern is reduced, the screen visibility of the display device 100 can be enhanced.

[0233] According to embodiments of this disclosure, since the light scattering particles 611 are included in a plurality of color filters CF, color mixing in the display panel 110 can be prevented.

[0234] In the following text, refer to Figure 6 and Figure 7 This describes possible color mixing in a display panel 110 according to an embodiment of the present disclosure.

[0235] Reference Figure 6 According to embodiments of the present disclosure, the light scattering layer 610 may be disposed below a plurality of color filters CF. The thickness of the light scattering layer 610 in the display panel 110 may affect the color mixing of at least one type of light emitted from the display panel 110 to the outside.

[0236] For example, the light scattering layer 610 may have a thickness of 3 μm to 5 μm.

[0237] The first light emitted from the first light-emitting unit EL1 of the light-emitting element ED, the second light emitted from the second light-emitting unit EL2, and the third light emitted from the third light-emitting unit EL3 can collide with and be scattered by a plurality of light-scattering particles 611 contained in the light-scattering layer 610.

[0238] For example, the first light emitted in the upper direction of the display panel 110 is scattered, allowing it to travel straight in at least one or more directions. Therefore, the first light can not only pass through the light scattering layer 610 and enter the first color filter CF1, but also enter the second color filter CF2 and the third color filter CF3 adjacent to the first color filter CF1.

[0239] Similarly, the second light can pass through the light scattering layer 610 and enter the second color filter CF2, as well as the first color filter CF1 adjacent to the second color filter CF2. The third light can pass through the light scattering layer 610 and enter the third color filter CF3, as well as the first color filter CF1 adjacent to the third color filter CF3.

[0240] As a result, the first and second rays can overlap in the color filter CF, and the first and third rays can also overlap in the color filter CF, leading to color mixing. The mixed light can pass through the color filter CF and leave the display panel 110, thereby reducing display quality.

[0241] Reference Figure 7 According to embodiments of the present disclosure, multiple color filters CF may include light scattering particles 611. In other words, since the light scattering layer 610 is removed and the multiple color filters CF include light scattering particles 611, the function of the light scattering layer 610 can be applied to the color filters CF.

[0242] For example, the first light, the second light, and the third light can be scattered and emitted to the outside of the display panel 110 by colliding with light scattering particles 611 contained in the first color filter CF1, the second color filter CF2, and the third color filter CF3, respectively. Therefore, the first light, the second light, and the third light do not mix and can be emitted to the outside of the display panel 110.

[0243] According to embodiments of this disclosure, since the light scattering particles 611 are included in a plurality of color filters CF, the reliability of the light-emitting elements ED in the display panel 110 can be enhanced.

[0244] Since the light scattering particles 611 are contained in multiple color filters CF, it is not necessary to form the light scattering layer 610 through a separate process, and therefore the reliability of the light-emitting element ED can be enhanced by preventing damage to the materials of the first light-emitting unit EL1, the second light-emitting unit EL2 and the third light-emitting unit EL3.

[0245] In the following text, refer to Figure 6 and Figure 7 The process of forming a plurality of color filters CF comprising light scattering particles 611 according to embodiments of the present disclosure is described.

[0246] Reference Figure 7 After the process of forming the touch unit 210, a black matrix 510 can be patterned on the touch unit 210. A color filter CF containing light scattering particles 611 is formed on the black matrix 510, and the process of forming the color filter CF may include a mixing step and a patterning step, but this disclosure is not limited thereto.

[0247] In the mixing step, light-scattering particles 611 can be mixed with color filter photoresist. This color filter photoresist can be a photosensitive material.

[0248] The light scattering particles 611 can be mixed with photoresists of different concentrations for the first color filter CF1, the second color filter CF2, and the third color filter CF3. See below for reference. Figure 8 Describe the concentration of light-scattering particles 611 for each type of color filter CF.

[0249] In the patterning step, the first color filter CF1 is formed in the first sub-pixel SP1 by applying a mixture of the first color filter CF1 onto the black matrix 510, drying it, exposing and developing it using a mask, and then curing it. Subsequently, the second color filter CF2 and the third color filter CF3 are formed in the second sub-pixel SP2 and the third sub-pixel SP3, respectively, in the same manner. Thus, multiple color filters CF that emit light with a first wavelength, light with a second wavelength, and light with a third wavelength can be completed. The formation order of the first color filter CF1, the second color filter CF2, and the third color filter CF3 is not limited to this and can be changed.

[0250] Here, the mixture of the first color filter CF1, the mixture of the second color filter CF2, and the mixture of the third color filter CF3 can be applied by a coating method, such as spin coating, slot coating, rod coating, roll coating, and inkjet coating. Furthermore, the photoresist for the photosensitive color filters can be of a negative type, wherein the portions exposed to light after development are retained. Conversely, the photoresist for the photosensitive color filters can be of a positive type, wherein the portions exposed to light after development are removed.

[0251] By mixing the light scattering particles 611 with the color filter photoresist, it is possible to avoid forming the light scattering layer 610.

[0252] Reference Figure 6 As described above, the process of forming the light scattering layer 610 may include a heat treatment step. When the heat treatment step is performed, the first light-emitting unit EL1, the second light-emitting unit EL2, and the third light-emitting unit EL3 of the light-emitting element ED disposed below the light scattering layer 610 will be damaged.

[0253] For example, when the light-emitting element ED is an organic light-emitting diode (OLED), the first light-emitting unit EL1, the second light-emitting unit EL2, and the third light-emitting unit EL3 may contain organic materials. Since organic materials are susceptible to heat, if the first light-emitting unit EL1, the second light-emitting unit EL2, and the third light-emitting unit EL3 undergo a heat treatment process, the organic materials contained in the first light-emitting unit EL1, the second light-emitting unit EL2, and the third light-emitting unit EL3 will be damaged or their inherent light-emitting properties will deteriorate.

[0254] Since the light scattering layer 610 does not require a separate process or heat treatment step, the reliability of the light-emitting element ED can be enhanced by preventing damage to the organic materials of the first light-emitting unit EL1, the second light-emitting unit EL2, and the third light-emitting unit EL3.

[0255] Figure 8 This illustrates the display panel 110 along the edge according to an embodiment of the present disclosure. Figure 4A cross-sectional view of multiple sub-pixels SP taken from line II′, in which light scattering particles 611 are contained in the color filter CF.

[0256] Reference Figure 8 In the display panel 110 according to an embodiment of the present disclosure, the weight percentage of light scattering particles 611 contained in one of two or more color filters CF may be equal to or greater than the weight percentage of light scattering particles 611 contained in the other color filters CF.

[0257] The following describes the differences in the weight percentage of light-scattering particles 611 for each type of color filter CF.

[0258] Weight percentage is a method used to express content or concentration, and it can express the mass of a target component in the total mass of an object as a percentage.

[0259] For example, the weight percentage of light-scattering particles 611 contained in the first color filter CF1 in the display panel 110 according to an embodiment of the present disclosure may be a percentage of the light-scattering particles 611 within the total mass of the first color filter CF1.

[0260] In the display panel 110 according to an embodiment of the present disclosure, the weight percentage of light-scattering particles 611 contained in the first color filter CF1 to the third color filter CF3 can be a value set according to a predetermined level of rainbow patterns identified in the display device 100. For example, if the rainbow patterns are strong, the weight percentage of light-scattering particles 611 can be set to a high value.

[0261] As the weight percentage of light-scattering particles 611 contained in the color filter CF increases, the degree to which light emitted from the light-emitting element ED is scattered as it passes through the color filter CF (hereinafter referred to as "light scattering degree") can increase. When the light scattering degree increases, the transmittance of the display panel 110 can decrease, and therefore the luminous efficiency of the display panel 110 can decrease.

[0262] Therefore, in the display panel 110 according to the embodiments of the present disclosure, taking into account the rainbow pattern level and light transmittance of the display panel 110, the color filter CF can be designed such that the weight percentage of light scattering particles 611 varies for each type of color filter CF.

[0263] Color filters (CFs) that emit light of different wavelengths can also have different transmittance efficiencies. The transmittance efficiencies can be ranked from highest to lowest as green, red, and blue. In other words, the transmittance efficiency of a first color filter (CF1) emitting light with a first wavelength can be higher than that of a second color filter (CF2) emitting light with a second wavelength and a third color filter (CF3) emitting light with a third wavelength. Similarly, the transmittance efficiency of a second color filter (CF2) emitting light with a second wavelength can be higher than that of a third color filter (CF3) emitting light with a third wavelength.

[0264] To reduce the level of rainbow patterns, the weight percentage of light-scattering particles 611 can be increased for color filters CF with higher light transmittance.

[0265] In order not to reduce the light transmittance of specific colors in the display device 100, the weight percentage of light scattering particles 611 can be reduced for color filters with low light transmittance.

[0266] In a display panel according to an embodiment of the present disclosure, the weight percentage of light-scattering particles 611 contained in the first color filter CF1 may be greater than or equal to the weight percentage of light-scattering particles 611 contained in the second color filter CF2, and the weight percentage of light-scattering particles 611 contained in the second color filter CF2 may be greater than or equal to the weight percentage of light-scattering particles 611 contained in the third color filter CF3.

[0267] For example, the weight percentage of light-scattering particles 611 contained in the first color filter CF1 may be 0.1wt% to 0.2wt%, the weight percentage of light-scattering particles 611 contained in the second color filter CF2 may be 0.05wt% to 0.1wt%, and the weight percentage of light-scattering particles 611 contained in the third color filter CF3 may be 0.01wt% or less.

[0268] In this case, the light scattering particle 611 can be an inorganic scattering particle 611a containing inorganic materials, as will be referred to below. Figure 9 Describe it.

[0269] For example, the weight percentage of light-scattering particles 611 contained in the first color filter CF1 may be 0.5wt% to 0.8wt%, the weight percentage of light-scattering particles 611 contained in the second color filter CF2 may be 0.3wt% to 0.5wt%, and the weight percentage of light-scattering particles 611 contained in the third color filter CF3 may be 0.3wt% or less.

[0270] In this case, the light scattering particle 611 can be an organic scattering particle 611b containing organic material, which will be referred to below. Figure 9 Describe it.

[0271] For example, the weight percentage of light-scattering particles 611 contained in the first color filter CF1 may be 0.1wt% to 0.2wt%, the weight percentage of light-scattering particles 611 contained in the second color filter CF2 may be 0.05wt% to 0.1wt%, and the weight percentage of light-scattering particles 611 contained in the third color filter CF3 may be 0.01wt% or less.

[0272] In this case, the light scattering particle 611 can be a hybrid scattering particle 611c, which will be referred to below. Figure 13 Describe it.

[0273] Reference Figure 8 According to an embodiment of the present disclosure, the weight percentage of light-scattering particles 611 contained in the first color filter CF1 that overlaps with the first light-emitting unit EL1 in the display panel 110 may be greater than or equal to the weight percentage of light-scattering particles 611 contained in the second color filter CF2 that overlaps with the second light-emitting unit EL2.

[0274] Reference Figure 8 According to embodiments of the present disclosure, the display panel 110 may include an encapsulation unit 200 that overlaps with two or more color filters having different weight percentages of light-scattering particles 611.

[0275] In other words, the encapsulation unit 200 can be configured to overlap with two or more color filters having different weight percentages of light scattering particles 611 in the first color filter CF1, the second color filter CF2, and the third color filter CF3.

[0276] Reference Figure 8 In a display panel 110 according to an embodiment of the present disclosure, a first touch metal TM1 may overlap with the boundary between two or more color filters having different weight percentages of light scattering particles 611.

[0277] In other words, the first touch metal TM1 can be configured to overlap with the boundary between the first color filter CF1 and the second color filter CF2 that are adjacent to each other, the boundary between the first color filter CF1 and the third color filter CF3 that are adjacent to each other, and the boundary between the second color filter CF2 and the third color filter CF3 that are adjacent to each other.

[0278] Reference Figure 8 According to embodiments of the present disclosure, the display panel 110 may further include a black matrix 510, which is disposed on the touch unit 210, is configured to overlap with the first touch metal TM1, and is disposed in the boundary between two or more color filters CF of light scattering particles 611 having different weight percentages.

[0279] In other words, the black matrix 510 can be set in the boundary between the first color filter CF1 and the second color filter CF2 that are adjacent to each other, the boundary between the first color filter CF1 and the third color filter CF3 that are adjacent to each other, and the boundary between the second color filter CF2 and the third color filter CF3 that are adjacent to each other.

[0280] Reference Figure 8 The display panel 110 according to an embodiment of the present disclosure may further include a dam 340 disposed between a plurality of light-emitting units EL and overlapping the boundary between two or more color filters CF having different weight percentages of light-scattering particles 611.

[0281] In other words, the embankment 340 can be configured to overlap with the boundary between the first color filter CF1 and the second color filter CF2 that are adjacent to each other, the boundary between the first color filter CF1 and the third color filter CF3 that are adjacent to each other, and the boundary between the second color filter CF2 and the third color filter CF3 that are adjacent to each other.

[0282] Figure 9 A light-scattering particle 611 is shown in a display panel 110 according to an embodiment of the present disclosure.

[0283] The light-scattering particles 611 included in the display panel 110 according to embodiments of the present disclosure may comprise at least one of inorganic and organic materials.

[0284] For example, the light scattering particle 611 can be an inorganic scattering particle 611a containing an inorganic material. The inorganic material can be TiO2 and silicon dioxide, but this disclosure is not limited thereto.

[0285] For example, the light scattering particle 611 can be an organic scattering particle 611b containing an organic material. The organic material can be a polymer, but this disclosure is not limited thereto.

[0286] In the display panel 110 according to an embodiment of the present disclosure, the light scattering degree of inorganic scattering particles 611a can be higher than that of organic scattering particles 611b. Therefore, the weight percentage of light scattering particles 611 included in the color filter CF when the light scattering particles 611 are inorganic scattering particles 611a can be less than the weight percentage of light scattering particles 611 included in the color filter CF when the light scattering particles 611 are organic scattering particles 611b.

[0287] For example, when the light scattering particle 611 is an inorganic scattering particle 611a, the weight percentage of the light scattering particle 611 contained in the color filter CF can be in the range of 0.01wt% to 0.2wt%, and when the light scattering particle 611 is an organic scattering particle 611b, the weight percentage of the light scattering particle 611 contained in the color filter CF can be in the range of 0.3wt% to 0.8wt%.

[0288] In the display panel 110 according to an embodiment of the present disclosure, the size of the organic scattering particles 611b can be smaller than the size of the inorganic scattering particles 611a. As the size of the light scattering particles 611 contained in the color filter CF decreases, the thickness d of the color filter CF can decrease. Although the organic scattering particles 611b are smaller in size than the inorganic scattering particles 611a, they can have a larger weight percentage range in the color filter CF due to their lower light scattering degree. Therefore, the thickness d of the color filter CF containing the organic scattering particles 611b can be greater than the thickness d of the color filter CF containing the inorganic scattering particles 611a.

[0289] For example, refer to Figure 8 When the light scattering particle 611 is an inorganic scattering particle 611a, the thickness d of the first color filter CF1 to the third color filter CF3 can be 3.0 μm to 4.0 μm, and when the light scattering particle 611 is an organic scattering particle 611b, the thickness d of the first color filter CF1 to the third color filter CF3 can be 4.0 μm to 5.0 μm.

[0290] Figures 10 to 12 This illustrates the display panel 110 according to an embodiment of the present disclosure, along... Figure 4 A cross-sectional view of multiple sub-pixels SP intercepted by line II′.

[0291] In the display panel 110 according to an embodiment of the present disclosure, the thickness d of each of the plurality of color filters CF can vary depending on whether it contains light scattering particles 611 or the weight percentage (concentration) of light scattering particles 611.

[0292] Figure 10 The variation of thickness d in a display panel 110 according to an embodiment of the present disclosure is shown, depending on whether the color filter CF contains light-scattering particles 611.

[0293] In the display panel 110 according to an embodiment of the present disclosure, two or more of the plurality of color filters CF may include light scattering particles 611. The thickness d of the color filter CF including the light scattering particles 611 may be greater than the thickness d of the color filter CF not including the light scattering particles 611.

[0294] Reference Figure 10The light-scattering particles 611 may be included in the first color filter CF1 and the second color filter CF2, which are among the first color filters CF1 to the third color filter CF3. The thickness d of the first color filter CF1 and the second color filter CF2 may be greater than the thickness d of the third color filter CF3, which does not contain the light-scattering particles 611.

[0295] For example, when the light scattering particle 611 is an inorganic scattering particle 611a, the thickness d of the first color filter CF1 and the second color filter CF2 containing the light scattering particle 611 can be 3.0 μm to 4.0 μm, and the thickness d of the third color filter CF3 that does not contain the light scattering particle 611 can be 2.0 μm to 3.0 μm.

[0296] For example, when the light scattering particle 611 is an organic scattering particle 611b, the thickness d of the first color filter CF1 and the second color filter CF2 containing the light scattering particle 611 can be 4.0 μm to 5.0 μm, and the thickness d of the third color filter CF3 that does not contain the light scattering particle 611 can be 3.0 μm to 4.0 μm.

[0297] Figure 11 The variations in thickness d of a display panel 110 according to an embodiment of the present disclosure, depending on whether the color filter CF contains light-scattering particles 611, and the differences in the weight percentage of light-scattering particles 611 for each type of color filter CF are shown.

[0298] In the display panel 110 according to an embodiment of the present disclosure, two or more of the plurality of color filters CF may include light scattering particles 611. The thickness d of the color filter CF including the light scattering particles 611 may be greater than the thickness d of the color filter CF not including the light scattering particles 611.

[0299] Reference Figure 11 The thickness d of the first color filter CF1 and the second color filter CF2, which contain light scattering particles 611, can be greater than the thickness d of the third color filter CF3, which does not contain light scattering particles 611.

[0300] Reference Figure 11 The weight percentage of light scattering particles 611 contained in the first color filter CF1 may be greater than or equal to the weight percentage of light scattering particles 611 contained in the second color filter CF2.

[0301] For example, when the light-scattering particle 611 is an inorganic scattering particle 611a, the thickness d of the first color filter CF1 containing the light-scattering particle 611 can be 3.0 μm to 4.0 μm, and the weight percentage of the light-scattering particle 611 in the first color filter CF1 can be 0.1 wt% to 0.2 wt%. The thickness d of the second color filter CF2 containing the light-scattering particle 611 can be 3.0 μm to 4.0 μm, and the weight percentage of the light-scattering particle 611 in the second color filter CF2 can be 0.05 wt% to 0.1 wt%. The thickness d of the third color filter CF3, which does not contain the light-scattering particle 611, can be 2.0 μm to 3.0 μm.

[0302] For example, when the light-scattering particle 611 is an organic scattering particle 611b, the thickness d of the first color filter CF1 containing the light-scattering particle 611 can be 4.0 μm to 5.0 μm, and the weight percentage of the light-scattering particle 611 in the first color filter CF1 can be 0.5 wt% to 0.8 wt%. The thickness d of the second color filter CF2 containing the light-scattering particle 611 can be 4.0 μm to 5.0 μm, and the weight percentage of the light-scattering particle 611 in the second color filter CF2 can be 0.3 wt% to 0.5 wt%. The thickness d of the third color filter CF3, which does not contain the light-scattering particle 611, can be 3.0 μm to 4.0 μm.

[0303] Figure 12 The variation of thickness d in a display panel 110 according to an embodiment of the present disclosure is shown, depending on whether the color filter CF contains light-scattering particles 611.

[0304] At least one of the plurality of color filters CF in the display panel 110 according to an embodiment of the present disclosure may include light-scattering particles 611. The thickness d of the color filter CF including the light-scattering particles 611 may be greater than the thickness d of the color filter CF not including the light-scattering particles 611.

[0305] Reference Figure 12 The light-scattering particles 611 may be included in the first color filter CF1, which is one of the first color filters CF1 to the third color filter CF3. The thickness d of the first color filter CF1 may be greater than the thickness d of the second color filter CF2 and the third color filter CF3, which do not contain the light-scattering particles 611.

[0306] For example, when the light scattering particle 611 is an inorganic scattering particle 611a, the thickness d of the first color filter CF1 containing the light scattering particle 611 can be 3.0 μm to 4.0 μm, and the thickness d of the second color filter CF2 and the third color filter CF3 that do not contain the light scattering particle 611 can be 2.0 μm to 3.0 μm.

[0307] The weight percentage of inorganic scattering particles 611a contained in the first color filter CF1 can be from 0.1 wt% to 0.2 wt%.

[0308] For example, when the light scattering particle 611 is an organic scattering particle 611b, the thickness d of the first color filter CF1 containing the light scattering particle 611 can be 4.0 μm to 5.0 μm, and the thickness d of the second color filter CF2 and the third color filter CF3 that do not contain the light scattering particle 611 can be 3.0 μm to 4.0 μm.

[0309] The weight percentage of organic scattering particles 611b contained in the first color filter CF1 can be from 0.5 wt% to 0.8 wt%.

[0310] Figure 13 A light-scattering particle 611 is shown in a display panel 110 according to an embodiment of the present disclosure.

[0311] In the display panel 110 according to an embodiment of the present disclosure, the light scattering particles 611 may comprise organic materials and may also comprise inorganic materials.

[0312] Figure 13 The light-scattering particles 611 included in the display panel 110 according to an embodiment of the present disclosure are shown to comprise both inorganic and organic materials.

[0313] When the light scattering particle 611 contains both inorganic and organic materials, the light scattering particle 611 may have a core-shell structure comprising a shell 1320 containing inorganic materials and a core 1310 containing organic materials. In the following text, the light scattering particle 611 having a core-shell structure containing both inorganic and organic materials is referred to as a "hybrid scattering particle 611c".

[0314] The inorganic material forming the shell 1320 can be the same as the inorganic material applied to the inorganic scattering particles 611a. In other words, the inorganic material forming the shell 1320 can be TiO2 and silicon dioxide, but this disclosure is not limited thereto.

[0315] The organic material forming the core 1310 can be the same as the organic material applied to the organic scattering particles 611b. In other words, the organic material forming the core 1310 can be a polymer, but this disclosure is not limited thereto.

[0316] In the hybrid scattering particle 611c, the weight percentage of inorganic material can be less than or equal to the weight percentage of organic material. In other words, the weight of the shell 1320 in the hybrid scattering particle 611c can be less than or equal to the weight of the core 1310.

[0317] In the display panel 110 according to an embodiment of the present disclosure, the light scattering degree of inorganic scattering particles 611a may be higher than that of organic scattering particles 611b. Furthermore, the size of the organic scattering particles 611b may be smaller than the size of the inorganic scattering particles 611a.

[0318] The hybrid scattering particles 611c can possess both the characteristics of inorganic scattering particles 611a containing inorganic materials and the characteristics of organic scattering particles 611b containing organic materials. For example, inorganic scattering particles 611a can have high light scattering characteristics. Organic scattering particles 611b can have a small particle size, and organic scattering particles 611b can also have the characteristic of increasing the transmittance of the color filter CF containing organic scattering particles 611b. Therefore, the hybrid scattering particles 611c can possess both high light scattering characteristics and high transmittance characteristics.

[0319] For example, the weight percentage of the mixed-type scattering particles 611c contained in the color filter CF can be less than the weight percentage of the light scattering particles 611 contained in the color filter CF when the light scattering particles 611 are organic scattering particles 611b. When the light scattering particles 611 are mixed-type scattering particles 611c, the weight percentage of the light scattering particles 611 contained in the color filter CF can be in the range of 0.01 wt% to 0.2 wt%, and when the light scattering particles 611 are organic scattering particles 611b, the weight percentage of the light scattering particles 611 contained in the color filter CF can be in the range of 0.3 wt% to 0.8 wt%.

[0320] Even though the color filter CF contains a relatively low weight percentage of mixed-type scattering particles 611c, it can still exhibit higher-than-expected light scattering properties due to the mixed structure of the light scattering particles 611c.

[0321] For example, the thickness d of a color filter CF containing mixed scattering particles 611c can be less than or equal to the thickness d of a color filter CF containing inorganic scattering particles 611a. (Refer to...) Figure 8 When the light scattering particle 611 is a mixed-type scattering particle 611c, the thickness d of the first color filter CF1 to the third color filter CF3 can be 2.0μm to 3.0μm, and when the light scattering particle 611 is an inorganic scattering particle 611a, the thickness d of the first color filter CF1 to the third color filter CF3 can be 3.0μm to 4.0μm.

[0322] Because the multiple color filters CF contain relatively small mixed-type scattering particles 611c, the thickness d of the color filters CF can be reduced. As the thickness d of the color filters CF decreases, the path of light emitted from the display panel 110 to the outside is shortened, and color mixing can be prevented, thereby improving light transmittance.

[0323] Figures 14 to 16 This illustrates the display panel 110 according to an embodiment of the present disclosure, along... Figure 4 A cross-sectional view of multiple sub-pixels SP intercepted by line II′.

[0324] Figure 14 The variation of thickness d in a display panel 110 according to an embodiment of the present disclosure depends on whether light-scattering particles 611 are included in the color filter.

[0325] In the display panel 110 according to an embodiment of the present disclosure, two or more of the plurality of color filters CF may include light scattering particles 611. The thickness d of the color filter CF including the light scattering particles 611 may be the same as the thickness d of the color filter CF not including the light scattering particles 611.

[0326] Reference Figure 14 The light-scattering particles 611 may be included in the first color filter CF1 and the second color filter CF2, which are among the first color filters CF1 to the third color filter CF3. The thickness d of the first color filter CF1 and the second color filter CF2 may be equal to the thickness d of the third color filter CF3, which does not contain the light-scattering particles 611.

[0327] For example, when the light scattering particle 611 is a mixed-type scattering particle 611c, the thickness d of the first color filter CF1 and the second color filter CF2 containing the light scattering particle 611 can be 2.0 μm to 3.0 μm, and the thickness d of the third color filter CF3 that does not contain the light scattering particle 611 can also be 2.0 μm to 3.0 μm.

[0328] Figure 15 The variations in thickness d of a display panel 110 according to an embodiment of the present disclosure, depending on whether the color filter CF contains light-scattering particles 611, and the differences in the weight percentage of light-scattering particles 611 for each type of color filter CF are shown.

[0329] In the display panel 110 according to an embodiment of the present disclosure, two or more of the plurality of color filters CF may include light scattering particles 611. The thickness d of the color filter CF including the light scattering particles 611 may be the same as the thickness d of the color filter CF not including the light scattering particles 611.

[0330] Reference Figure 15 The thickness d of the first color filter CF1 and the second color filter CF2, which contain light scattering particles 611, can be equal to the thickness d of the third color filter CF3, which does not contain light scattering particles 611.

[0331] Reference Figure 15The weight percentage of light scattering particles 611 contained in the first color filter CF1 can be greater than or equal to the weight percentage of light scattering particles 611 contained in the second color filter CF2.

[0332] For example, when the light-scattering particle 611 is a hybrid scattering particle 611c, the thickness d of the first color filter CF1 containing the light-scattering particle 611 can be 2.0 μm to 3.0 μm, and the weight percentage of the light-scattering particle 611 in the first color filter CF1 can be 0.1 wt% to 0.2 wt%. The thickness d of the second color filter containing the light-scattering particle 611 can be 2.0 μm to 3.0 μm, and the weight percentage of the light-scattering particle 611 in the second color filter CF2 can be 0.05 wt% to 0.1 wt%. The thickness d of the third color filter CF3, which does not contain the light-scattering particle 611, can be 2.0 μm to 3.0 μm.

[0333] Figure 16 The variation of thickness d in a display panel 110 according to an embodiment of the present disclosure is shown, depending on whether the color filter CF contains light-scattering particles 611.

[0334] At least one of the plurality of color filters CF in the display panel 110 according to an embodiment of the present disclosure may include light-scattering particles 611. The thickness d of the color filter CF including the light-scattering particles 611 may be equal to the thickness d of the color filter CF not including the light-scattering particles 611.

[0335] Reference Figure 16 The light-scattering particles 611 may be included in the first color filter CF1, which is one of the first color filters CF1 to the third color filter CF3. The thickness d of the first color filter CF1 may be equal to the thickness d of the second color filter CF2 and the third color filter CF3, which do not contain the light-scattering particles 611.

[0336] For example, when the light scattering particle 611 is a mixed-type scattering particle 611c, the thickness d of the first color filter CF1 containing the light scattering particle 611 can be 2.0 μm to 3.0 μm, and the thickness d of the second color filter CF2 and the third color filter CF3 that do not contain the light scattering particle 611 can also be 2.0 μm to 3.0 μm.

[0337] The weight percentage of the mixed scattering particles 611c contained in the first color filter CF1 can be from 0.1 wt% to 0.2 wt%.

[0338] Figure 17 This illustrates the edge of the display panel 110 according to an embodiment of the present disclosure. Figure 4 A cross-sectional view of multiple sub-pixels SP containing the functional color filter CF′, taken from line II′.

[0339] Reference Figure 17 The functional color filter CF' may include a first functional color filter CF1', a second functional color filter CF2', and a third functional color filter CF3'.

[0340] In the display panel 110 according to an embodiment of the present disclosure, among a plurality of functional color filters CF′, the functional color filter CF′ containing light scattering particles 611 may also contain a dispersant different from the light scattering particles 611, and the color filter CF that does not contain light scattering particles 611 may not contain a dispersant.

[0341] Reference Figure 17 The first functional color filter CF1′ to the third functional color filter CF3′ containing light scattering particles 611 may also contain a dispersant, although not shown in the figures.

[0342] A dispersant can be used to prevent the aggregation of light-scattering particles 611 when they are mixed with the color filter photoresist. By preventing the aggregation of light-scattering particles 611, light emitted from the display panel 110 can collide with and be scattered uniformly by the light-scattering particles 611.

[0343] In the display panel 110 according to an embodiment of the present disclosure, a plurality of functional color filters CF′ may contain at least one of an ultraviolet absorber and a light stabilizer.

[0344] Light stabilizers are substances that inhibit changes in physical properties caused by photochemical reactions or light absorption. They are added to prevent discoloration of fibers or photodegradation and discoloration of plastics, and sunscreens can be considered one type of light stabilizer.

[0345] Reference Figure 17 The display panel 110 according to embodiments of the present disclosure may not include a polarizer. If a polarizer is absent, preventing the absorption of ultraviolet light from the outside, some components in the display panel 110 will be damaged by ultraviolet light. Therefore, the lightfastness of the display panel 110 can be enhanced by applying at least one of an ultraviolet absorber and a light stabilizer to a plurality of functional color filters CF′.

[0346] Reference Figure 17 Each of the first functional color filter CF1′ to the third functional color filter CF3′ may contain at least one of an ultraviolet absorber and a light stabilizer, although not shown in the figures.

[0347] For example, the ultraviolet absorber may be 2-methylphenyl4-methylbenzoate, but this disclosure is not limited thereto.

[0348] For example, the light stabilizer may be a Tinuvin-based material, but this disclosure is not limited thereto.

[0349] When each of the first functional color filter CF1′ to the third functional color filter CF3′ contains an ultraviolet absorber, the weight percentage of the ultraviolet absorber may be from 1 wt% to 3 wt%. When each of the first functional color filter CF1′ to the third functional color filter CF3′ contains a light stabilizer, the weight percentage of the light stabilizer may be from 0.5 wt% to 1 wt%.

[0350] Figure 18 This illustrates the display panel 110 according to an embodiment of the present disclosure, along... Figure 4 A cross-sectional view of multiple sub-pixels intercepted by line II′. However, the same description as above can be omitted.

[0351] Reference Figure 18 According to an embodiment of the present disclosure, the display panel 110 may include a substrate 111, a first light-emitting element ED1 disposed on the substrate 111 and included in a first sub-pixel SP1, a second light-emitting element ED2 disposed on the substrate 111 and included in a second sub-pixel SP2, a third light-emitting element ED3 disposed on the substrate 111 and included in a third sub-pixel SP3, and a light-scattering layer 610 disposed on the first light-emitting element ED1, the second light-emitting element ED2 and the third light-emitting element ED3.

[0352] The light scattering layer 610 may include a first region A1 that overlaps with the first light-emitting element ED1, a second region A2 that overlaps with the second light-emitting element ED2, and a third region A3 that overlaps with the third light-emitting element ED3.

[0353] At least one of the first region A1, the second region A2, and the third region A3 may contain light-scattering particles. For example, each light-scattering particle may contain inorganic materials, organic materials, or both organic and organic materials.

[0354] For example, when some of the first region A1, the second region A2, and the third region A3 contain light-scattering particles, the height of each of the first region A1, the second region A2, and the third region A3 can vary depending on whether or not light-scattering particles are contained.

[0355] For example, the first region A1 and the second region A2 may contain light-scattering particles, while the third region A3 may not contain light-scattering particles. In this case, the height of each of the first region A1 and the second region A2 may be greater than the height of the third region A3 (see [link to relevant documentation]). Figure 10 ).

[0356] As another example, the first region A1 may contain light-scattering particles, while the second region A2 and the third region A3 may not contain light-scattering particles. In this case, the height of the first region A1 may be greater than the height of each of the second region A2 and the third region A3 (see [link to relevant documentation]). Figure 10 ).

[0357] As another example, when two or more of the first region A1, the second region A2, and the third region A3 contain light-scattering particles, the weight percentage of light-scattering particles contained in one of the two or more regions may be greater than or equal to the weight percentage of light-scattering particles contained in the other region.

[0358] For example, the first region A1 and the second region A2 may contain light-scattering particles, while the third region A3 may not contain light-scattering particles. In this case, the weight percentage of light-scattering particles contained in the first region A1 may be greater than or equal to the weight percentage of light-scattering particles contained in the second region A2.

[0359] As another example, the first region A1, the second region A2, and the third region A3 may all contain light-scattering particles. The weight percentage of light-scattering particles contained in the first region A1 may be greater than or equal to the weight percentage of light-scattering particles contained in the second region A2 and the third region A3. The weight percentage of light-scattering particles contained in the second region A2 may be greater than or equal to the weight percentage of light-scattering particles contained in the third region A3.

[0360] Reference Figure 18 The first light emitted from the first light-emitting element ED1 can be incident on the first region A1, the first light emitted from the second light-emitting element ED2 can be incident on the second region A2, and the third light emitted from the third light-emitting element ED3 can be incident on the third region A3.

[0361] Reference Figure 18 The first region A1 may contain a first color filter material and may emit light with a first wavelength when the first light is incident. The second region A2 may contain a second color filter material and may emit light with a second wavelength when the second light is incident. The third region A3 may contain a third color filter material and may emit light with a third wavelength when the third light is incident.

[0362] Of the first, second, and third wavelengths, the second wavelength can be the longest, and the third wavelength can be the shortest. Light with the first wavelength emitted in the first region A1, light with the second wavelength emitted in the second region A2, and light with the third wavelength emitted in the third region A3 can be different colors. For example, light with the first wavelength can be green, light with the second wavelength can be red, and light with the third wavelength can be blue.

[0363] For example, the first light emitted from the first light-emitting element ED1, the second light emitted from the second light-emitting element ED2, and the third light emitted from the third light-emitting element ED3 can be different colors of light. For example, the first light can be green light, the second light can be red light, and the third light can be blue light.

[0364] As another example, the first light emitted from the first light-emitting element ED1, the second light emitted from the second light-emitting element ED2, and the third light emitted from the third light-emitting element ED3 can all be light of the same color. For example, the first light, the second light, and the third light can be white light.

[0365] The foregoing embodiments of this disclosure are briefly described below.

[0366] A display panel according to an embodiment of the present disclosure may include a substrate, a plurality of light-emitting elements disposed on the substrate, and a plurality of color filters disposed overlapping the plurality of light-emitting elements. At least one of the plurality of color filters may include light-scattering particles for scattering light incident thereon.

[0367] According to embodiments of the display device of the present disclosure, two or more of the plurality of color filters may contain light-scattering particles. The weight percentage of light-scattering particles contained in one of the two or more color filters may be equal to or greater than the weight percentage of light-scattering particles contained in the other of the two or more color filters.

[0368] According to the display device of the embodiments of the present disclosure, the two or more color filters may include a first color filter and a second color filter, and the light emitted from the first color filter may have a first wavelength, and the light emitted from the second color filter may have a second wavelength different from the first wavelength.

[0369] According to the display device of the embodiments of the present disclosure, the first wavelength may be shorter than the second wavelength, and the weight percentage of light scattering particles contained in the first color filter may be equal to or greater than the weight percentage of light scattering particles contained in the second color filter.

[0370] According to embodiments of the present disclosure, the display device may include a first color filter, a second color filter, and a third color filter. Light emitted from the first color filter may have a first wavelength, light emitted from the second color filter may have a second wavelength different from the first wavelength, and light emitted from the third color filter may have a third wavelength different from the first and second wavelengths.

[0371] According to the display device of the embodiments of the present disclosure, among the first wavelength, the second wavelength, and the third wavelength, the third wavelength may be the shortest, and the second wavelength may be the longest. The weight percentage of light-scattering particles contained in the first color filter may be equal to or greater than the weight percentage of light-scattering particles contained in the second color filter, and the weight percentage of light-scattering particles contained in the second color filter may be equal to or greater than the weight percentage of light-scattering particles contained in the third color filter.

[0372] According to the display device of the embodiments of the present disclosure, the thickness of each of the plurality of color filters may vary depending on whether it contains light-scattering particles.

[0373] According to the embodiments of the present disclosure, in a display device, among a plurality of color filters, the thickness of a color filter containing light-scattering particles may be greater than the thickness of a color filter not containing light-scattering particles.

[0374] According to the embodiments of the present disclosure, in a display device, among a plurality of color filters, color filters containing light-scattering particles and color filters not containing light-scattering particles may have the same thickness.

[0375] According to the embodiments of the present disclosure, in a display device, among a plurality of color filters, a color filter containing light scattering particles may further contain a dispersant different from the light scattering particles, and a color filter not containing light scattering particles may not contain a dispersant.

[0376] According to embodiments of the present disclosure, in a display device, a plurality of color filters may contain at least one of an ultraviolet absorber and a light stabilizer.

[0377] According to embodiments of the display device of this disclosure, each of a plurality of light-emitting elements may include a pixel electrode, a light-emitting unit disposed on the pixel electrode, and a common electrode disposed on the light-emitting unit. A plurality of color filters may include: a first color filter that overlaps with a first light-emitting unit of the first light-emitting element included in the plurality of light-emitting elements; and a second color filter that overlaps with a second light-emitting unit of the second light-emitting element included in the plurality of light-emitting elements. The wavelength of light emitted from the first light-emitting unit may be different from the wavelength of light emitted from the second light-emitting unit. The weight percentage of light-scattering particles contained in the first color filter may be different from the weight percentage of light-scattering particles contained in the second color filter.

[0378] The display device according to embodiments of the present disclosure may further include an encapsulation unit disposed on a plurality of light-emitting elements and overlapping with two or more color filters having different weight percentages of light-scattering particles.

[0379] The display device according to embodiments of the present disclosure may further include a touch unit disposed on a plurality of light-emitting elements. The touch unit may include a touch buffer layer, a first touch metal disposed on the touch buffer layer, and a touch protective layer disposed on the first touch metal. The first touch metal may overlap with the boundary between two or more color filters containing light-scattering particles with different weight percentages.

[0380] The display device according to embodiments of the present disclosure may further include a black matrix disposed on a touch unit, disposed to overlap with a first touch metal, and disposed on the boundary between two or more color filters having different weight percentages of light scattering particles.

[0381] The display device according to an embodiment of the present disclosure may further include a dam portion disposed between a first light-emitting unit and a second light-emitting unit, and overlapping with the boundary between a first color filter and a second color filter having different weight percentages of light-scattering particles.

[0382] According to embodiments of this disclosure, the light-scattering particles comprise organic materials.

[0383] According to the display device of the embodiments of the present disclosure, the thickness of at least one of the plurality of color filters may be 4.0 μm to 5.0 μm, and the weight percentage of light scattering particles contained in the at least one of the plurality of color filters may be 0.3 wt% to 0.8 wt%.

[0384] According to the display device of the embodiments of the present disclosure, the light scattering particles may comprise inorganic materials.

[0385] According to the display device of the embodiments of the present disclosure, the thickness of at least one of the plurality of color filters may be 3.0 μm to 4.0 μm, and the weight percentage of light scattering particles contained in the at least one of the plurality of color filters may be 0.01 wt% to 0.2 wt%.

[0386] According to the embodiments of the present disclosure, the light scattering particles may have a core-shell structure comprising a shell containing inorganic material and a core disposed in the shell and containing organic material.

[0387] According to the display device of the present disclosure, the weight percentage of inorganic material in the light scattering particles may be equal to or less than the weight percentage of organic material.

[0388] According to the display device of the present disclosure, the thickness of at least one of the plurality of color filters may be 2.0 μm to 3.0 μm, and the weight percentage of light scattering particles contained in the at least one of the plurality of color filters may be 0.01 wt% to 0.2 wt%.

[0389] According to the display device of the embodiments of the present disclosure, the thickness of the first color filter may be equal to the thickness of the second color filter.

[0390] According to the display device of the embodiments of the present disclosure, the first color filter may have a thickness equal to the thickness of the second color filter and the thickness of the third color filter.

[0391] A display device according to an embodiment of the present disclosure may include: a substrate; a plurality of sub-pixels disposed on the substrate; a first light-emitting element disposed on the substrate and included in a first sub-pixel of the plurality of sub-pixels; a second light-emitting element disposed on the substrate and included in a second sub-pixel of the plurality of sub-pixels; a third light-emitting element disposed on the substrate and included in a third sub-pixel of the plurality of sub-pixels; and a light-scattering layer disposed on the first light-emitting element, the second light-emitting element, and the third light-emitting element.

[0392] The light scattering layer may include a first region overlapping with the first light-emitting element, a second region overlapping with the second light-emitting element, and a third region overlapping with the third light-emitting element.

[0393] At least one of the first, second, and third regions may contain light-scattering particles for scattering light incident thereon.

[0394] For example, the height of each of the first, second, and third regions can vary depending on whether light-scattering particles are present.

[0395] In the first, second, and third regions, the height of the region containing light-scattering particles can be greater than the height of the region not containing light-scattering particles.

[0396] As another example, when two or more regions in the first, second, and third regions contain light-scattering particles, the weight percentage of light-scattering particles contained in one of the two or more regions may differ from the weight percentage of light-scattering particles contained in the other of the two or more regions.

[0397] The first region may contain a first color filter material and emit light of a first color when the first light is incident. The second region may contain a second color filter material and emit light of a second color when the second light is incident. The third region may contain a third color filter material and emit light of a third color when the third light is incident.

[0398] Light with the first wavelength can be green light, light with the second wavelength can be red light, and light with the third wavelength can be blue light.

[0399] The foregoing description has been given to enable those skilled in the art to make and use the technical concepts of this disclosure, and has been provided in specific applications and their requirements. Various modifications, additions, and substitutions to the described embodiments will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of this disclosure. The foregoing description and accompanying drawings are provided as examples of the technical concepts of this disclosure for illustrative purposes only. That is, the disclosed embodiments are intended to illustrate the scope of the technical concepts of this disclosure.

Claims

1. A display device comprising: a substrate; a plurality of light-emitting elements disposed on the substrate; a plurality of color filters disposed so as to overlap the plurality of light-emitting elements, wherein at least one of the plurality of color filters contains light-scattering particles for scattering light incident thereon.

2. The display device according to claim 1, wherein two or more of the plurality of color filters contain the light-scattering particles, and wherein the weight percentage of the light-scattering particles contained in one of the two or more color filters is equal to or greater than the weight percentage of the light-scattering particles contained in another of the two or more color filters.

3. The display device according to claim 2, wherein the two or more color filters include a first color filter and a second color filter, and wherein light emitted from the first color filter has a first wavelength, and light emitted from the second color filter has a second wavelength different from the first wavelength.

4. The display device according to claim 3, wherein the first wavelength is shorter than the second wavelength, and wherein the weight percentage of the light-scattering particles contained in the first color filter is equal to or greater than the weight percentage of the light-scattering particles contained in the second color filter.

5. The display device according to claim 2, wherein the two or more color filters include a first color filter, a second color filter, and a third color filter, and wherein light emitted from the first color filter has a first wavelength, light emitted from the second color filter has a second wavelength different from the first wavelength, and light emitted from the third color filter has a third wavelength different from the first wavelength and the second wavelength.

6. The display device of claim 5, wherein, of the first wavelength, the second wavelength, and the third wavelength, the third wavelength is the shortest, and the second wavelength is the longest, and wherein the weight percentage of the light-scattering particles contained in the first color filter is equal to or greater than the weight percentage of the light-scattering particles contained in the second color filter, and the weight percentage of the light-scattering particles contained in the second color filter is equal to or greater than the weight percentage of the light-scattering particles contained in the third color filter.

7. The display device according to claim 1, wherein a thickness of each of the plurality of color filters varies depending on whether or not the light-scattering particles are contained.

8. The display device according to claim 1, wherein of the plurality of color filters, a color filter containing the light-scattering particles has a greater thickness than a color filter not containing the light-scattering particles.

9. The display device according to claim 1, wherein of the plurality of color filters, a color filter containing the light-scattering particles and a color filter not containing the light-scattering particles have the same thickness.

10. The display device according to claim 1, wherein of the plurality of color filters, a color filter containing the light-scattering particles further contains a dispersant different from the light-scattering particles, and a color filter not containing the light-scattering particles does not contain the dispersant.

11. The display device according to claim 1, wherein the plurality of color filters contain at least one of an ultraviolet absorber and a light stabilizer.

12. The display device according to claim 1, wherein each of the plurality of light-emitting elements includes: a pixel electrode; a light-emitting unit disposed on the pixel electrode; and a common electrode disposed on the light-emitting unit; wherein the plurality of color filters includes: a first color filter overlapping a first light-emitting unit included in a first light-emitting element of the plurality of light-emitting elements; and a second color filter overlapping a second light emitting cell included in a second light emitting element among the plurality of light emitting elements, wherein a wavelength of light emitted from the first light emitting cell is different from a wavelength of light emitted from the second light emitting cell, and wherein a weight percentage of light scattering particles included in the first color filter is different from a weight percentage of light scattering particles included in the second color filter.

13. The display device according to claim 2, wherein The display device further includes a packaging unit disposed on the plurality of light emitting elements and overlapping the two or more color filters having different weight percentages of the light scattering particles.

14. The display device according to claim 2, wherein The display device further includes a touch unit disposed on the plurality of light emitting elements, the touch unit including: a touch buffer layer; a first touch metal disposed on the touch buffer layer; and a touch protection layer disposed on the first touch metal; wherein the first touch metal overlaps a boundary between the two or more color filters having different weight percentages of the light scattering particles.

15. The display device of claim 14, wherein, The display device further includes a black matrix disposed on the touch unit, disposed to overlap the first touch metal, and disposed on a boundary between the two or more color filters having different weight percentages of the light scattering particles.

16. The display device of claim 12, wherein, The display device further includes a bank disposed between the first light emitting cell and the second light emitting cell and overlapping a boundary between the first color filter and the second color filter having different weight percentages of the light scattering particles.

17. The display device of claim 1, wherein The light scattering particles include an organic material.

18. The display device of claim 17, wherein, The at least one of the plurality of color filters has a thickness of 4.0 μm to 5.0 μm, and the light scattering particles included in the at least one of the plurality of color filters have a weight percentage of 0.3 wt% to 0.8 wt%.

19. The display device of claim 1, wherein, The light scattering particles include an inorganic material.

20. The display device of claim 19, wherein, The at least one of the plurality of color filters has a thickness of 3.0 μm to 4.0 μm, and the light scattering particles included in the at least one of the plurality of color filters have a weight percentage of 0.01 wt% to 0.2 wt%.

21. The display device of claim 1, wherein, The light scattering particles have a core-shell structure including a shell including an inorganic material and a core disposed in the shell and including an organic material.

22. The display device of claim 21, wherein, In the light scattering particles, a weight percentage of the inorganic material is equal to or less than a weight percentage of the organic material.

23. The display device of claim 21, wherein, The at least one of the plurality of color filters has a thickness of 2.0 μm to 3.0 μm, and the light scattering particles included in the at least one of the plurality of color filters have a weight percentage of 0.01 wt% to 0.2 wt%.

24. The display device of claim 4, wherein, A thickness of the first color filter is equal to a thickness of the second color filter.

25. The display device of claim 6, wherein, A thickness of the first color filter is equal to a thickness of the second color filter and a thickness of the third color filter.

26. A display device, comprising: a substrate; a plurality of sub-pixels disposed on the substrate; a first light-emitting element disposed on the substrate and included in a first sub-pixel of the plurality of sub-pixels; a second light-emitting element disposed on the substrate and included in a second sub-pixel of the plurality of sub-pixels; a third light-emitting element disposed on the substrate and included in a third sub-pixel of the plurality of sub-pixels; and a light-scattering layer disposed on the first, second, and third light-emitting elements, wherein the light-scattering layer includes a first region overlapping the first light-emitting element, a second region overlapping the second light-emitting element, and a third region overlapping the third light-emitting element, wherein at least one of the first, second, and third regions contains light-scattering particles for scattering light incident thereon. A height of each of the first, second, and third regions varies depending on whether the light-scattering particles are contained.

27. The display device of claim 26, wherein, In the first, second, and third regions, a height of a region containing the light-scattering particles is greater than a height of a region not containing the light-scattering particles.

28. The display device of claim 26, wherein, When two or more of the first, second, and third regions contain the light-scattering particles, a weight percentage of the light-scattering particles contained in one of the two or more regions is different from a weight percentage of the light-scattering particles contained in another region of the two or more regions.

29. The display device of claim 26, wherein, The first region contains a first color filter material and emits light having a first wavelength, 30. The display device of claim 26, wherein, wherein the second region contains a second color filter material and emits light having a second wavelength, and wherein the third region contains a third color filter material and emits light having a third wavelength. The light having the first wavelength is green light, the light having the second wavelength is red light, and the light having the third wavelength is blue light.

31. A display device according to claim 30, wherein, ​

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