Display apparatus and method of manufacturing same

Abstract

The invention provides a display device and a method of manufacturing the same. The display device includes a sub-pixel disposed in a sub-pixel area. Each of the sub-pixels includes: a display unit including a light emitting layer emitting light; and a reflection control layer disposed on the display unit throughout the sub-pixel region, in which the reflection control layer selectively absorbs light in a wavelength band. The reflection control layer includes a first layer and a second layer disposed on the first layer, wherein a thickness of the second layer is less than a thickness of the first layer. The second layer includes a liquid repellent material.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and all benefits arising from Korean Patent Application No. 10-2023-0082962, filed on June 27, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to a display device and a method of manufacturing the display device. Background Art

[0004] With the development of information technology, the importance of display devices as a connection medium between users and information has come to the fore, and therefore, research into additional structures for improving display quality is being actively conducted.

[0005] The structure formed in the display device needs to ensure the effect of improving display quality, achieve the expected technical effect in a sufficient time, and ensure structural reliability. Summary of the invention

[0006] Embodiments of the present disclosure are to provide a display device having improved display quality and a method of manufacturing the display device.

[0007] An embodiment of the present disclosure is to provide a display device configured to ensure reliability of quality by improving structural stability and a method of manufacturing the display device.

[0008] According to an embodiment of the present disclosure, a display device includes sub-pixels arranged in a sub-pixel area. In such an embodiment, each of the sub-pixels may include: a display unit including a light-emitting layer that emits light; and a reflection control layer arranged on the display unit throughout the sub-pixel area, wherein the reflection control layer selectively absorbs light in a band. In such an embodiment, the reflection control layer includes a first layer and a second layer arranged on the first layer, wherein the thickness of the second layer is less than the thickness of the first layer, and the second layer includes a liquid-repellent material.

[0009] According to an embodiment, the reflection control layer may be configured to absorb light in a non-emission band different from the band of light emitted from the light emitting layer. In such an embodiment, the non-emission band may include a first non-emission band and a second non-emission band. In such an embodiment, the band of light emitted from the light emitting layer may include a first band, a second band, and a third band. In such an embodiment, the first non-emission band may include a band between the third band and the second band, and the second non-emission band may include a band between the second band and the first band.

[0010] According to an embodiment, the first non-emission band may include at least a portion of a band within 460nm to 520nm, and the second non-emission band may include at least a portion of a band within 560nm to 620nm. In such an embodiment, the first band may be a red band, the second band may be a green band, and the third band may be a blue band.

[0011] According to an embodiment, the reflection control layer may include a dye, a pigment or a combination thereof.

[0012] According to an embodiment, the reflection control layer may include at least one selected from the group consisting of an oxazine-based compound, a cyanine-based compound, a tetrazolyl-based compound, and a squarylium-based compound.

[0013] According to an embodiment, a display unit may include: a light emitting element including a first electrode, a second electrode, and a light emitting layer electrically connected between the first electrode and the second electrode; and a low-reflective inorganic layer disposed on the light emitting element.

[0014] According to an embodiment, the second electrode may be disposed on the light emitting layer. In such an embodiment, light reflected by the low-reflective inorganic layer and light reflected by the second electrode may destructively interfere with each other.

[0015] According to an embodiment, the display device may further include a light blocking layer disposed between the display unit and the reflection control layer, wherein the opening may be defined in the light blocking layer. In such an embodiment, the opening and the sub-pixel region may overlap each other in a plan view, and the reflection control layer may contact the light blocking layer.

[0016] According to an embodiment, the light blocking layer may contact the first layer and be spaced apart from the second layer.

[0017] According to an embodiment, the liquid repellency of the liquid repellent material may be greater than the liquid repellency of the dye, the pigment, or a combination thereof included in the reflection control layer.

[0018] According to an embodiment, the surface energy of the liquid repellent material may be greater than the surface energy of the dye, the pigment, or a combination thereof included in the reflection control layer.

[0019] According to an embodiment, the second layer may have a film-shaped structure on the first layer.

[0020] According to an embodiment, the hardness of the second layer may be greater than the hardness of the first layer.

[0021] According to an embodiment, in the second layer, the liquid-repellent material may be included at a concentration of 500 ppm or less.

[0022] According to an embodiment, the display device may further include a protective film disposed on the reflection control layer. In such an embodiment, the protective film may contact the second layer and be spaced apart from the first layer.

[0023] According to an embodiment of the present disclosure, a display device includes: a display unit; and a reflection control layer disposed on the display unit, wherein the reflection control layer selectively absorbs light in a wavelength band and includes a first surface facing the display unit and a second surface opposite to the first surface. In such an embodiment, the reflection control layer may include a first layer defining the first surface and a second layer disposed on the first layer and defining the second surface, and the hardness of the second layer may be greater than the hardness of the first layer.

[0024] According to an embodiment of the present disclosure, a method for manufacturing a display device includes: providing a display unit; and providing a substrate reflection control layer including a dye and a liquid repellent material on the display unit. In this embodiment, the substrate reflection control layer includes a first surface adjacent to the display unit and a second surface opposite to the first surface, and the method further includes: moving the liquid repellent material to be adjacent to the second surface.

[0025] According to an embodiment, a reflection control layer is provided based on a base reflection control layer by moving the liquid repellent material adjacent to the second surface, the reflection control layer comprising a first layer and a second layer disposed on the first layer and comprising the liquid repellent material. In such an embodiment, the method may further comprise curing the reflection control layer, and after curing, the hardness of the second layer may be greater than the hardness of the first layer.

[0026] According to an embodiment, when the liquid repellent material is moved adjacent to the second surface, the second surface of the base reflection control layer may be exposed.

[0027] According to an embodiment, the method may further include disposing a protective film on the reflection control layer, wherein the protective film may be spaced apart from the first layer and may physically contact the second layer.

[0028] According to an embodiment of the present disclosure, a display device having improved display quality and a method of manufacturing the display device may be provided.

[0029] According to an embodiment of the present disclosure, a display device configured to ensure reliability of quality by improving structural stability and a method of manufacturing the display device may be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and other features of the present disclosure will become more apparent by further describing the embodiments of the present disclosure in detail with reference to the accompanying drawings, in which:

[0031] Figure 1 is a diagram showing a display device according to an embodiment;

[0032] Figure 2 is a schematic cross-sectional view showing a stacked structure of a display device according to an embodiment;

[0033] Figure 3is a schematic cross-sectional view showing a display unit according to an embodiment;

[0034] Figure 4 is a schematic cross-sectional view showing a sensor unit according to an embodiment;

[0035] Figure 5 is a schematic cross-sectional view showing a display device according to an embodiment;

[0036] Figure 6 is a schematic cross-sectional view showing an external unit according to an embodiment; and

[0037] Figures 7 to 9 is a schematic cross-sectional view for each process step of a method for manufacturing a display device according to an embodiment. DETAILED DESCRIPTION

[0038] The present invention will now be described more fully below with reference to the accompanying drawings, in which various embodiments are shown. However, the present invention may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art. The same reference numerals represent the same elements throughout.

[0039] The terms "first", "second", etc. may be used to describe various components, but these components should not be limited by these terms. These terms are only used for the purpose of distinguishing one component from another component. For example, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component without departing from the scope of the present disclosure.

[0040] The terms used herein are only used for the purpose of describing a particular embodiment and are not intended to be limited. As used herein, "one", "a kind of", "the" and "at least one" do not represent the limitation of quantity, but are intended to include both the singular and the plural, unless the context clearly indicates otherwise. Therefore, the mention of "said" element after the mention of "one" element in the claim includes one element and multiple elements. For example, "element" has the same meaning as "at least one element", unless the context clearly indicates otherwise. "At least one" is not interpreted as limiting "one" or "a kind of". "Or" means "and / or". As used herein, the term "and / or" includes any and all combinations of one or more associated listed items. It will also be understood that the term "comprising" and / or "comprising", or "comprising" and / or "comprising" when used in this specification, specifies the existence of the described features, regions, wholes, steps, operations, elements and / or parts, but does not exclude the existence or addition of one or more other features, regions, wholes, steps, operations, elements, parts and / or their groups.

[0041] Furthermore, when a part of a layer, region, plate, etc. is referred to as being "on" another part, this includes not only the case where the part is "directly on" another part, but also the case where there is another part between the part and the other part. Furthermore, in this specification, when a part of a layer, region, plate, etc. is formed on another part, the formation direction is not limited to the upper direction, but includes forming the part on the side surface or in the lower direction. Conversely, when a part of a layer, region, plate, etc. is formed "below" another part, this includes not only the case where the part is "directly below" another part, but also the case where there is another part between the part and the other part.

[0042] In addition, relative terms, such as "lower" or "bottom" and "upper" or "top", may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. It will be understood that relative terms are intended to include different orientations of the device in addition to the orientation depicted in the accompanying drawings. For example, if the device in one of the accompanying drawings is turned over, the element described as being on the "lower" side of the other elements will then be oriented on the "upper" side of the other elements. Therefore, the term "lower" can include both "lower" and "upper" orientations, depending on the specific orientation of the accompanying drawings. Similarly, if the device in one of the accompanying drawings is turned over, the element described as being "under" or "below" the other elements will then be oriented "above" the other elements. Therefore, the term "under" or "below" can include both above and below orientations.

[0043] As used herein, "about" or "approximately" is inclusive of the stated value and means within an acceptable range of deviation for a particular value as determined by one of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "about" can mean within one or more standard deviations, or within ±30%, ±20%, ±10%, or ±5% of the stated value.

[0044] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those commonly understood by those of ordinary skill in the art to which the present disclosure belongs. It will also be understood that terms, such as those defined in commonly used dictionaries, should be understood to have meanings consistent with their meanings in the context of the relevant technology and the present disclosure, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0045] Embodiments are described herein with reference to cross-sectional illustrations that are schematic illustrations of idealized embodiments. As such, variations in the shapes illustrated may be expected as a result of, for example, manufacturing techniques and / or tolerances. Therefore, the embodiments described herein should not be construed as limited to regions of a particular shape as shown herein, but rather should include shape deviations, for example, caused by manufacturing. For example, a region shown or described as flat may typically have rough and / or nonlinear features. In addition, the sharp angles shown may be rounded. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the precise shape of the regions, and are not intended to limit the scope of the claims set forth.

[0046] Hereinafter, a display apparatus and a method of manufacturing the display apparatus according to embodiments will be described with reference to the accompanying drawings.

[0047] Figure 1 is a diagram showing a display device according to an embodiment. Figure 2 is a schematic cross-sectional view showing a stacked structure of a display device according to an embodiment.

[0048] refer to Figure 1 and Figure 2 The display device DD according to the embodiment is configured to provide (or emit) light. The display device DD may include a panel PNL and a driving circuit unit DV for driving the panel PNL. The display device DD may further include an external unit OUP.

[0049] The panel PNL may include a display unit DP for displaying an image and a sensor unit TSP configured to sense a user input (e.g., a touch input). The display unit DP may be referred to as a display panel, a display portion, or a display layer. The sensor unit TSP may be referred to as a sensing panel, a touch sensor, a sensing portion, or a sensing layer.

[0050] The panel PNL may include a sub-pixel SPX and a sensing electrode SP. According to an embodiment, the sub-pixel SPX may display an image in a display frame period unit. The sensing electrode SP may sense a user's input (e.g., a touch input) in a sensing frame period unit. The sensing frame period and the display frame period may be independent of each other, or may be different from each other (e.g., not overlapping in time). The sensing frame period and the display frame period may be synchronous or asynchronous with each other.

[0051] The sensor unit TSP including the sensing electrode SP may obtain information about the user's touch input. According to an embodiment (e.g., a mutual capacitance method), the sensing electrode SP may include a first sensing electrode SP1 providing a first sensing signal and a second sensing electrode SP2 providing a second sensing signal. According to an embodiment, the first sensing electrode SP1 may be a Tx (transmitter) pattern electrode, and the second sensing electrode SP2 may be an Rx (receiver) pattern electrode. According to an embodiment, the information about the touch input (or touch event) may mean information including the position of the touch that the user wants to provide, etc.

[0052] However, the present disclosure is not limited thereto. For example, according to an alternative embodiment, in the case where there is no distinction between the first sensing electrode SP1 and the second sensing electrode SP2 (eg, a self-capacitance method), the sensing electrode SP may be configured by one type of sensing electrode.

[0053] The driving circuit unit DV may include a display driver DDV for driving the display unit DP and a sensor driver SDV for driving the sensor unit TSP.

[0054] The display unit DP may include a display base layer DBSL and a sub-pixel SPX disposed on the display base layer DBSL. The sub-pixel SPX may be disposed in the display area DA. The sub-pixel SPX may form or collectively define a pixel (or a pixel unit).

[0055] The display base layer DBSL (or the display device DD) may include a display area DA in which an image is displayed and a non-display area NDA outside the display area DA. According to an embodiment, the display area DA may be disposed in a central area of ​​the display unit DP, and the non-display area NDA may be disposed adjacent to the periphery of the display area DA.

[0056] The display base layer DBSL may be a base substrate or a base member for supporting the display device DD. The base substrate may be a rigid substrate including a glass material. Alternatively, the base substrate may be a flexible substrate that can be bent, folded, rolled, etc. In such an embodiment, the base substrate may include an insulating material such as a polymer resin (such as polyimide). However, the present disclosure is not particularly limited thereto.

[0057] Scan lines SL and data lines DL, and sub-pixels SPX connected to the scan lines SL and the data lines DL are arranged in the display area DA. The sub-pixels SPX may be configured to: be selected by a scan signal of an on-level provided from the scan lines SL; receive a data signal from the data lines DL; and emit light of a brightness corresponding to the data signal. Thus, an image corresponding to the data signal is displayed in the display area DA. However, in the present disclosure, the structure, driving method, etc. of the sub-pixels SPX are not particularly limited.

[0058] Various lines and / or built-in circuit units connected to the subpixels SPX of the display area DA may be disposed in the non-display area NDA. In an embodiment, for example, a plurality of lines for supplying various power and control signals to the display area DA may be disposed in the non-display area NDA.

[0059] The display unit DP can output visual information (e.g., an image). According to an embodiment, the type / kind of the display unit DP is not particularly limited. In an embodiment, for example, the display unit DP can be implemented as a self-emissive display panel such as an organic light-emitting display panel. In an embodiment in which the display unit DP is implemented as a self-emissive display panel, each pixel is not limited to a case in which only an organic light-emitting element is included. In an embodiment, for example, the light-emitting element of each pixel can be formed by an organic light-emitting diode, an inorganic light-emitting diode, a quantum dot / quantum well light-emitting diode, or the like.

[0060] Hereinafter, for convenience of description, an embodiment in which the display unit DP is implemented as an organic light emitting display panel will be described in detail.

[0061] The sensor unit TSP includes a sensor base layer SBSL and a plurality of sensing electrodes SP disposed or formed on the sensor base layer SBSL. The sensing electrodes SP may be disposed on the sensor base layer SBSL in the sensing area SA.

[0062] The sensor base layer SBSL (or the display device DD) may include a sensing area SA that can sense a touch input, etc., and a non-sensing area NSA around the sensing area SA. According to an embodiment, the sensing area SA may be set to overlap with at least one area of ​​the display area DA. In an embodiment, for example, the sensing area SA may be set to an area corresponding to the display area DA (e.g., an area overlapping the display area DA), and the non-sensing area NSA may be set to an area corresponding to the non-display area NDA (e.g., an area overlapping the non-display area NDA). In such an embodiment, when a touch input, etc. is provided in the display area DA, the touch input may be detected by the sensor unit TSP.

[0063] The sensor base layer SBSL may include one or more insulating layers (eg, a first insulating layer INS1 (refer to Figure 4 )). In an embodiment, for example, a first insulating layer INS1 for forming the sensor base layer SBSL may be disposed on the display unit DP to provide a base for forming the sensing electrode SP. However, examples for forming the sensor base layer SBSL are not particularly limited.

[0064] The sensing area SA is set as an area configured to respond to a touch input (ie, an active area of ​​a sensor). In an embodiment, a sensing electrode SP for sensing a touch input, etc. may be disposed in the sensing area SA.

[0065] The sensor unit TSP may obtain information about an input provided from a user. The sensor unit TSP may recognize a touch input. The sensor unit TSP may recognize a touch input using a capacitive sensing method. The sensor unit TSP may sense a touch input using a mutual capacitance method, or may sense a touch input using a self capacitance method.

[0066] According to an embodiment, each of the first sensing electrodes SP1 may extend in the first direction DR1. The first sensing electrodes SP1 may be arranged in the second direction DR2. The second direction DR2 may be different from the first direction DR1. In an embodiment, for example, the second direction DR2 may be a direction perpendicular to the first direction DR1. Each of the first sensing electrodes SP1 may have a form in which a first unit with a relatively large area and a first bridge electrode with a relatively small area are connected to each other. The first sensing electrode SP1 may generally have a rhombus shape. However, the shape of the first sensing electrode SP1 is not particularly limited.

[0067] According to an embodiment, each of the second sensing electrodes SP2 may extend in the second direction DR2. The second sensing electrodes SP2 may be arranged in the first direction DR1. Each of the second sensing electrodes SP2 may have a form in which a second unit with a relatively large area and a second bridge electrode with a relatively small area are connected to each other. The second sensing electrode SP2 may generally have a rhombus shape. However, the shape of the second sensing electrode SP2 is not particularly limited.

[0068] According to an embodiment, the first sensing electrode SP1 and the second sensing electrode SP2 may have the same (e.g., substantially the same) shape as each other. In an embodiment, for example, the first sensing electrode SP1 as a Tx pattern and the second sensing electrode SP2 as an Rx pattern may have substantially the same shape, and thus the sensing performance of the touch event may be uniformly set within the sensing area SA.

[0069] In an embodiment, a sensing line for electrically connecting the sensing electrode SP to the sensor driver SDV, etc. may be provided in the non-sensing area NSA of the sensor unit TSP.

[0070] The driving circuit unit DV may include a display driver DDV for driving the display unit DP and a sensor driver SDV for driving the sensor unit TSP.

[0071] The display driver DDV is configured to be electrically connected to the display unit DP to drive the sub-pixel SPX. The sensor driver SDV is configured to be electrically connected to the sensor unit TSP to drive the sensor unit TSP.

[0072] The external unit OUP may be substantially disposed above the panel PNL of the display device DD based on the thickness direction (e.g., the third direction DR3) of the display base layer DBSL. The external unit OUP may be disposed on the sensor unit TSP. Light provided from the display unit DP may pass through the external unit OUP and may be output to the outside. The external unit OUP may be referred to as an external portion, an outer layer, or an upper layer.

[0073] The external unit OUP may include a light blocking layer BM (see Figure 5 ) to improve visibility of the display device DD. In an embodiment, for example, the light blocking layer BM may be disposed to overlap the first sensing electrode SP1 and the second sensing electrode SP2 forming the sensor unit TSP to prevent visibility from being reduced due to the first sensing electrode SP1 and the second sensing electrode SP2.

[0074] The external unit OUP may further include a reflection control layer RCL (refer to Figure 5 ). When the reflection control layer RCL according to the embodiment is provided, the display quality of the display device DD can be improved by ensuring reliability. Details on this point will be described later.

[0075] According to an embodiment, the external unit OUP may protect the internal configuration of the display device DD from external influences. In an embodiment, for example, the external unit OUP may further include a protective film PF configured to transmit light (refer to Figure 5 ).

[0076] Next, refer to Figure 3 , an embodiment of the display unit DP will be described. Figure 3 is a schematic cross-sectional view showing a display unit according to the embodiment.

[0077] refer to Figure 3 , the display unit DP according to the embodiment may include a pixel circuit layer PCL and a light emitting element layer EML.

[0078] The pixel circuit layer PCL may include a pixel circuit for driving the light emitting element LD. The pixel circuit layer PCL may include a display base layer DBSL, conductive layers constituting the pixel circuit, and insulating layers disposed between the conductive layers.

[0079] The pixel circuit may include a driving transistor. The pixel circuit may include a thin film transistor. The pixel circuit may be electrically connected to the light emitting element LD to provide an electrical signal for the light emitting element LD to emit light.

[0080] The light emitting element layer EML may be disposed on the pixel circuit layer PCL. According to an embodiment, the light emitting element layer EML may include a light emitting element LD, a pixel defining layer PDL, a low reflective inorganic layer LRL, and an encapsulation layer TFE.

[0081] The light emitting element LD may be disposed on the pixel circuit layer PCL. According to an embodiment, the light emitting element LD may include a first electrode ELT1, a light emitting layer EL, and a second electrode ELT2. According to an embodiment, the light emitting layer EL may be disposed in an area defined by a pixel defining layer PDL (or in an opening defined by the pixel defining layer PDL). The pixel defining layer PDL may be adjacent to the periphery of the light emitting layer EL. A surface of the light emitting layer EL may be electrically connected to the first electrode ELT1, and another surface of the light emitting layer EL may be electrically connected to the second electrode ELT2.

[0082] The first electrode ELT1 may be an anode electrode for the light emitting layer EL, and the second electrode ELT2 may be a common electrode (or cathode electrode) for the light emitting layer EL. According to an embodiment, the first electrode ELT1 and the second electrode ELT2 may include a conductive material. In an embodiment, for example, the first electrode ELT1 may include a conductive material having a reflective property, and the second electrode ELT2 may include a transparent conductive material. However, the present disclosure is not limited thereto.

[0083] The light emitting layer EL may have a multi-layer thin film structure including a light generating layer. The light emitting layer EL may include: a hole injection layer for injecting holes; a hole transport layer having excellent hole transport characteristics and for increasing the chance of recombination of holes and electrons by suppressing the movement of electrons not combined in the light generating layer; a light generating layer for emitting light by recombination of injected electrons and holes; a hole blocking layer for suppressing the movement of holes not combined in the light generating layer; an electron transport layer for smoothly transferring electrons to the light generating layer; and an electron injection layer for injecting electrons. The light emitting layer EL may emit light based on an electrical signal provided from the first electrode ELT1 and the second electrode ELT2.

[0084] According to an embodiment, the light emitting layer EL may emit light in a wavelength band. In an embodiment, for example, the light emitting layer EL may include: a first light emitting layer EL1 (refer to Figure 5 ), configured to emit light of a first color in a first wavelength band; a second light-emitting layer EL2 (reference Figure 5 ), configured to emit light of a second color in a second wavelength band; and a third light-emitting layer EL3 (reference Figure 5 ) is configured to emit light of a third color in a third band.

[0085] The first light emitting layer EL1 may form a first light emitting element emitting light of a first color, the second light emitting layer EL2 may form a second light emitting element emitting light of a second color, and the third light emitting layer EL3 may form a third light emitting element emitting light of a third color.

[0086] The first color may be red. In an embodiment, for example, the first waveband may be a waveband of 600 nanometers (nm) to 750 nm. The second color may be green. In an embodiment, for example, the second waveband may be a waveband of 480 nm to 560 nm. The third color may be blue. In an embodiment, for example, the third waveband may be a waveband of 370 nm to 460 nm.

[0087] According to an embodiment, the light emitting layer EL may not substantially emit light in a non-emission band. In the present disclosure, the non-emission band may be a band including a wavelength that does not at least partially overlap with a band of light emitted from the light emitting layer EL.

[0088] According to an embodiment, the non-emission band may not overlap with the band of light emitted from the light emitting layer EL. In an embodiment, for example, the non-emission band may not overlap with the first band. The non-emission band may not overlap with the second band. The non-emission band may not overlap with the third band.

[0089] According to an embodiment, the non-emission band may include a first non-emission band and a second non-emission band. The second non-emission band may be a band larger than the first non-emission band.

[0090] In an embodiment, for example, the first non-emission band may include a band between the third band and the second band. The first non-emission band may include a band between the peak wavelength of the third band and the peak wavelength of the second band. The second non-emission band may include a band between the second band and the first band. The first non-emission band may include a band between the peak wavelength of the second band and the peak wavelength of the first band.

[0091] The first non-emission band may include at least a portion of the band within 460nm to 520nm. According to an embodiment, the first non-emission band may be a band from 460nm to 520nm. Alternatively, according to an embodiment, the first non-emission band may be a band from 490nm to 505nm. The second non-emission band may include at least a portion of the band within 560nm to 620nm. According to an embodiment, the second non-emission band may be a band from 560nm to 620nm. Alternatively, according to an embodiment, the second non-emission band may be a band from 585nm to 600nm. However, the present disclosure is not necessarily limited thereto.

[0092] According to the embodiment, the reflection control layer RCL configured to selectively absorb light in the non-emission band of the light emitting layer EL may be provided, and thus the reflectivity and color sense of the display device DD may be improved. Details on this point will be described later.

[0093] The pixel defining layer PDL may be disposed on the pixel circuit layer PCL to define the position where the light emitting layer EL is disposed. The pixel defining layer PDL may include an organic material. According to an embodiment, the pixel defining layer PDL may include at least one selected from acrylic resin, epoxy resin, phenolic resin, polyamide resin, and polyimide resin. However, the present disclosure is not limited thereto. The pixel defining layer PDL may include an inorganic material.

[0094] The low reflective inorganic layer LRL may be disposed on the light emitting element LD (eg, the second electrode ELT2). The low reflective inorganic layer LRL may be disposed between the encapsulation layer TFE and the light emitting element LD.

[0095] The low-reflective inorganic layer LRL may include an inorganic material. In an embodiment, for example, the low-reflective inorganic layer LRL may include a metal or a metal compound. In an embodiment, for example, the metal may include at least one selected from aluminum (Al), silver (Ag), magnesium (Mg), chromium (Cr), titanium (Ti), nickel (Ni), gold (Au), tantalum (Ta), copper (Cu), calcium (Ca), cobalt (Co), iron (Fe), molybdenum (Mo), tungsten (W), platinum (Pt), bismuth (Bi) and ytterbium (Yb). In an embodiment, for example, the metal compound may include at least one selected from silicon oxide (SiO x ), titanium oxide (TiO x ), zirconium oxide (ZrO x ), Tantalum Oxide (Ta x O y ), hafnium oxide (HfO x ), aluminum oxide (Al x O y ), zinc oxide (ZnO x ), yttrium oxide (Y x O y ), beryllium oxide (BeO x ), magnesium oxide (MgO x ), lead oxide (PbO x ), tungsten oxide (WO x ), bismuth oxide (BiO x ), silicon nitride (SiN x ), lithium fluoride (LiF x ), calcium fluoride (CaF x ), magnesium fluoride (MgF x ) and cadmium sulfide (CdSx Considering the refractive index and the absorption coefficient, one or more of the above materials can be selected as the low reflection inorganic layer LRL.

[0096] In an embodiment, the low-reflective inorganic layer LRL may reflect light incident thereto. In such an embodiment, the light reflected by the low-reflective inorganic layer LRL and the light reflected by a portion of the light-emitting element LD (e.g., the second electrode ELT2) may destructively interfere with each other. Therefore, the external light reflectivity of the display device DD may be reduced, and the display quality and visibility of the display device DD may be improved.

[0097] The encapsulation layer TFE may be disposed on the low-reflection inorganic layer LRL. The encapsulation layer TFE may offset the step difference generated by the light-emitting element LD, the low-reflection inorganic layer LRL, and the pixel defining layer PDL. The encapsulation layer TFE may include a plurality of insulating layers covering the light-emitting element LD. According to an embodiment, the encapsulation layer TFE may have a structure in which inorganic layers and organic layers are alternately stacked. According to an embodiment, the encapsulation layer TFE may be an encapsulation layer of a structure in which a first inorganic layer, an organic layer, and a second inorganic layer are sequentially stacked. According to an embodiment, the encapsulation layer TFE may be a thin film encapsulation layer.

[0098] Next, refer to Figure 4 , a cross-sectional structure of the sensor unit TSP will be described.

[0099] Figure 4 is a schematic cross-sectional view showing a sensor unit according to the embodiment.

[0100] According to an embodiment, the sensor unit TSP may be disposed on the light emitting element layer EML (or the encapsulation layer TFE). According to an embodiment, the sensor unit TSP may be disposed directly on the encapsulation layer TFE. The sensor unit TSP may include a first insulating layer INS1, a first conductive pattern layer CP1, a second insulating layer INS2, a second conductive pattern layer CP2, and a protective layer PVX.

[0101] According to an embodiment, the first conductive pattern layer CP1 and the second conductive pattern layer CP2 may be patterned at one position to form a sensing electrode SP. In an embodiment, for example, a portion of each of the first conductive pattern layer CP1 and the second conductive pattern layer CP2 may configure the first sensing electrode SP1, and a portion of the second conductive pattern layer CP2 may configure the second sensing electrode SP2. However, the present disclosure is not limited thereto.

[0102] The first insulating layer INS1 may be disposed on the encapsulation layer TFE. The first insulating layer INS1 may form the sensor base layer SBSL, and may provide a region surface on which the first conductive pattern layer CP1, the second insulating layer INS2, the second conductive pattern layer CP2, and the protective layer PVX are disposed.

[0103] The first insulating layer INS1 may include an inorganic material. The inorganic material may include a material selected from silicon nitride (SiN x ), silicon oxide (SiO x ), silicon oxynitride (SiO x N y ) and aluminum oxide (AlO x ) at least one of. However, the present disclosure is not limited thereto.

[0104] The first conductive pattern layer CP1 may be disposed on the first insulating layer INS1. The second conductive pattern layer CP2 may be disposed on the second insulating layer INS2. The first conductive pattern layer CP1 and the second conductive pattern layer CP2 may be spaced apart from each other with the second insulating layer INS2 interposed therebetween.

[0105] The first conductive pattern layer CP1 and the second conductive pattern layer CP2 may include a single layer or multiple layers of metal layers. The first conductive pattern layer CP1 and the second conductive pattern layer CP2 may include at least one of various metal materials selected from gold (Au), silver (Ag), aluminum (Al), molybdenum (Mo), chromium (Cr), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu) and platinum (Pt), or an alloy thereof. According to an embodiment, the first conductive pattern layer CP1 and the second conductive pattern layer CP2 may include a material selected from silver nanowires (AgNW), indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), antimony zinc oxide (AZO), indium tin zinc oxide (ITZO), zinc oxide (ZnO), tin oxide (SnO 2 ), at least one of various transparent conductive materials including one of carbon nanotubes and graphene.

[0106] The second insulating layer INS2 may be disposed on the first conductive pattern layer CP1. The second insulating layer INS2 may be interposed between the first conductive pattern layer CP1 and the second conductive pattern layer CP2. The protective layer PVX may be disposed on the second conductive pattern layer CP2.

[0107] The second insulating layer INS2 may include an organic material. The protective layer PVX may include an organic material. The organic material may include at least one selected from acrylic resin, methacrylic resin, polyisoprene, vinyl resin, epoxy resin, polyurethane resin, cellulose resin, siloxane resin, polyimide resin, polyamide resin and perylene resin. However, the present disclosure is not necessarily limited thereto. The second insulating layer INS2 and / or the protective layer PVX may include an inorganic material.

[0108] Next, refer to Figure 5 and Figure 6, a display device DD including a reflection control layer RCL according to an embodiment will be described.

[0109] Figure 5 is a schematic cross-sectional view showing a display device according to an embodiment. Figure 6 is a schematic cross-sectional view showing an exterior unit according to the embodiment.

[0110] The display device DD according to the embodiment may include first, second, and third light emitting layers EL1, EL2, and EL3 that emit light of different colors.

[0111] In an embodiment, the display device DD may include sub-pixels SPX1, SPX2, and SPX3 each forming a sub-pixel area SPXA. The sub-pixel area SPXA may include a first sub-pixel area SPXA1 in which light of a first color is emitted as an area formed by the first sub-pixel SPX1, a second sub-pixel area SPXA2 in which light of a second color is emitted as an area formed by the second sub-pixel SPX2, and a third sub-pixel area SPXA3 in which light of a third color is emitted as an area formed by the third sub-pixel SPX3.

[0112] According to an embodiment, light of a first color of a first wavelength band may be emitted from the first sub-pixel region SPXA1, light of a second color of a second wavelength band may be emitted from the second sub-pixel region SPXA2, and light of a third color of a third wavelength band may be emitted from the third sub-pixel region SPXA3.

[0113] According to an embodiment, the first conductive pattern layer CP1 and the second conductive pattern layer CP2 included in the sensor unit TSP may form the sensing electrode SP.

[0114] According to an embodiment, a contact portion CNT may be formed in a second insulating layer INS2 included in the sensor unit TSP. The contact portion CNT may be provided through the second insulating layer INS2 (or provided in a hole defined by the second insulating layer INS2). According to an embodiment, at least a portion of the second conductive pattern layer CP2 may be electrically connected to the first conductive pattern layer CP1 through the contact portion CNT.

[0115] The external unit OUP may be disposed on the sensor unit TSP, and may include a light blocking layer BM, a reflection control layer RCL, and a protection film PF.

[0116] The light blocking layer BM may be disposed on the protective layer PVX. The light blocking layer BM may contact the protective layer PVX. The light blocking layer BM may contact the reflection control layer RCL. The light blocking layer BM may be disposed between the reflection control layer RCL and the display unit DP.

[0117] The light blocking layer BM may be disposed between adjacent sub-pixel regions SPXA. In an embodiment, for example, the light blocking layer BM may be disposed between the first sub-pixel region SPXA1 and the second sub-pixel region SPXA2, may be disposed between the second sub-pixel region SPXA2 and the third sub-pixel region SPXA3, and may be disposed between the first sub-pixel region SPXA1 and the third sub-pixel region SPXA3. According to an embodiment, the opening OPN (refer to Figure 6 ) may overlap with the sub-pixel area SPXA in a plan view or in the third direction DR3.

[0118] The light blocking layer BM may include a light absorbing material. The light absorbing material may include a colorant including at least one of carbon black and lactam black. However, the present disclosure is not necessarily limited thereto, and the light absorbing material may be implemented with various materials. According to an embodiment, the light blocking layer BM may not include a light blocking structure formed by stacking two or more color filters.

[0119] The light blocking layer BM may overlap the first and second conductive pattern layers CP1 and CP2 in a plan view. Therefore, the light blocking layer BM may effectively prevent visibility from being reduced due to the first and second conductive pattern layers CP1 and CP2.

[0120] The reflection control layer RCL may be disposed outside the display unit DP based on the display direction (eg, third direction DR3) of the display device DD. In an embodiment, for example, the reflection control layer RCL may be disposed on the sensor unit TSP (eg, the protection layer PVX).

[0121] The reflection control layer RCL may include a first surface SF1 and a second surface SF2. The first surface SF1 may be a lower surface of the reflection control layer RCL and may face the display unit DP. The second surface SF2 may be a surface opposite to the first surface SF1. The second surface SF2 may face the outside and may face the protective film PF.

[0122] The reflection control layer RCL may contact the light blocking layer BM. The reflection control layer RCL may contact the protection film PF. The reflection control layer RCL may contact an upper surface (eg, the protection layer PVX) of the sensor unit TSP.

[0123] The reflection control layer RCL may be disposed throughout the sub-pixel SPX. The reflection control layer RCL may be disposed throughout the sub-pixel region SPXA. In an embodiment, for example, the reflection control layer RCL may be included in each of the first sub-pixel SPX1, the second sub-pixel SPX2, and the third sub-pixel SPX3. The reflection control layer RCL may be disposed throughout the first sub-pixel region SPXA1, the second sub-pixel region SPXA2, and the third sub-pixel region SPXA3. In an embodiment, for example, the reflection control layer RCL disposed in each of the first sub-pixel region SPXA1, the second sub-pixel region SPXA2, and the third sub-pixel region SPXA3 may be integrally formed with each other as a single integral and inseparable part.

[0124] According to an embodiment, light emitted from the light emitting layer EL may pass through the reflection control layer RCL and may be emitted to the outside. According to an embodiment, light emitted from the light emitting layer EL may pass through the low reflection inorganic layer LRL and the reflection control layer RCL and may be output.

[0125] In an embodiment, for example, light emitted from the first light emitting layer EL1 may pass through the reflection control layer RCL (or the low-reflection inorganic layer LRL and the reflection control layer RCL), and may be emitted to the outside of the display device DD. Therefore, a first sub-pixel region SPXA1 may be formed. Light emitted from the second light emitting layer EL2 may pass through the reflection control layer RCL (or the low-reflection inorganic layer LRL and the reflection control layer RCL), and may be emitted to the outside of the display device DD. Therefore, a second sub-pixel region SPXA2 may be formed. Light emitted from the third light emitting layer EL3 may pass through the reflection control layer RCL (or the low-reflection inorganic layer LRL and the reflection control layer RCL), and may be emitted to the outside of the display device DD. Therefore, a third sub-pixel region SPXA3 may be formed.

[0126] The reflection control layer RCL may selectively absorb light in a wavelength band. Therefore, the reflection control layer RCL may control the reflectivity of the display device DD, and thus may improve the display quality of the display device DD.

[0127] The reflection control layer RCL may be configured to absorb at least a portion of light in a non-emission band for the light emitting layer EL.

[0128] In an embodiment, for example, the reflection control layer RCL may absorb at least a portion of each of the first light in the first non-emission wavelength band and the second light in the second non-emission wavelength band.

[0129] According to an embodiment, the reflection control layer RCL may absorb at least a portion of light in a wavelength band of 460 nm to 520 nm, and may absorb at least a portion of light in a wavelength band of 560 nm to 620 nm. Alternatively, according to an embodiment, the reflection control layer RCL may absorb at least a portion of light in a wavelength band of 490 nm to 505 nm, and may absorb at least a portion of light in a wavelength band of 585 nm to 600 nm.

[0130] Therefore, the reflection control layer RCL can absorb at least a portion of light in the non-emission band with respect to the light emitting layer EL, and display quality can be improved.

[0131] The reflection control layer RCL may include at least one selected from various materials. According to an embodiment, the reflection control layer RCL may include a dye, a pigment, or a combination thereof. In an embodiment, for example, the reflection control layer RCL may include at least one selected from various organic materials, and the reflection control layer RCL may include at least one selected from oxazine-based compounds, cyanine-based compounds, tetrazolyl-based compounds, and squaric acid-based compounds. However, the present disclosure is not necessarily limited thereto.

[0132] According to an embodiment, the reflection control layer RCL may include a liquid-repellent material LRA. The liquid-repellent material LRA may be referred to as “liquid-repellent particles” or “liquid-repellent material”.

[0133] According to an embodiment, the reflection control layer RCL may include a layer (or film portion) including a liquid-repellent material LRA and a layer (or main portion) that substantially does not include the liquid-repellent material LRA or includes a liquid-repellent material LRA having a concentration (e.g., molar concentration) less than the concentration (e.g., molar concentration) of the liquid-repellent material LRA included in a region adjacent to the second surface SF2.

[0134] In an embodiment, for example, the reflection control layer RCL may include a first layer L1 and a second layer L2. The first layer L1 may be a portion defining the first surface SF1. The second layer L2 may be a portion defining the second surface SF2.

[0135] The first layer L1 may contact the light blocking layer BM. According to an embodiment, at least a portion of the first layer L1 may be disposed in the opening OPN formed by the light blocking layer BM. In a plan view, the first layer L1 may overlap the opening OPN and the light blocking layer BM.

[0136] The second layer L2 may be physically separated (or spaced apart) from the light blocking layer BM. According to an embodiment, in a plan view, the second layer L2 may overlap the opening OPN and the light blocking layer BM.

[0137] The thickness of the first layer L1 may be greater than the thickness of the second layer L2. In an embodiment, for example, the first layer L1 may have a first thickness, and the second layer L2 may have a second thickness less than the first thickness. In an embodiment, for example, the second layer L2 may have a relatively thin film shape.

[0138] The first layer L1 may substantially include no liquid repellent material LRA. In an embodiment, for example, the first layer L1 may substantially include no liquid repellent material LRA in a region adjacent to the light blocking layer BM. According to an embodiment, the first layer L1 may include a small amount of liquid repellent material LRA in a region adjacent to the second layer L2.

[0139] The second layer L2 may include a liquid repellent material LRA. The liquid repellent material LRA may be distributed along the upper surface of the reflection control layer RCL. In an embodiment, for example, the liquid repellent material LRA may be relatively widely distributed to form a thin film structure. In an embodiment, for example, the liquid repellent material LRA may be disposed throughout the first sub-pixel region SPXA1, the second sub-pixel region SPXA2, and the third sub-pixel region SPXA3.

[0140] According to an embodiment, the second layer L2 may include a liquid repellent material LRA in a concentration range of 100 parts per million (100 ppm) to 500 ppm. If the liquid repellent material LRA is included at a concentration exceeding 500 ppm, the second layer L2 may not be sufficiently cured, and if the liquid repellent material LRA is included at a concentration less than 100 ppm, the color transfer improvement effect may not occur because the liquid repellent component is insufficient. However, the numerical range according to the present disclosure is not necessarily limited thereto.

[0141] According to an embodiment, the liquid repellent material LRA may include a material having liquid repellency. According to an embodiment, the material having liquid repellency may include a material having substantially hydrophobicity.

[0142] According to an embodiment, "liquid repellency" in this specification may be defined as a contact angle of a liquid droplet with respect to a substrate, which is formed by placing an object material on a substrate or the like, being 50 degrees or more.

[0143] According to an embodiment, the liquid repellent material LRA may include a polymer including a fluorine functional group. According to an embodiment, the liquid repellent material LRA may include a material represented by Chemical Formulas 1 to 3 below.

[0144] [Molecular formula 1]

[0145]

[0146] In Formula 1, R is an alkyl group having 100 or less carbon atoms, and n is a natural number greater than or equal to 100.

[0147] [Molecular formula 2]

[0148]

[0149] In Formula 2, R is an alkyl group having 100 or less carbon atoms, and n is a natural number greater than or equal to 100.

[0150] [Molecular formula 3]

[0151]

[0152] In Formula 3, R is an alkyl group having 100 or less carbon atoms.

[0153] Alternatively, according to an embodiment, the liquid-repellent material LRA may include a material including a benzene ring. For example, the liquid-repellent material LRA may include a material represented by the following Chemical Formula 4.

[0154] [Molecular formula 4]

[0155]

[0156] In Formula 4, R is an alkyl group having 100 or less carbon atoms, and X is a halogen element.

[0157] However, the present disclosure is not limited thereto, and the liquid repellent material LRA may include a material represented by Chemical Formula 5 or Chemical Formula 6 below.

[0158] [Molecular formula 5]

[0159]

[0160] In Formula 5, R is an alkyl group having 100 or less carbon atoms, and m is a natural number less than or equal to 100.

[0161] [Molecular Formula 6]

[0162]

[0163] In Formula 6, R is an alkyl group having 100 or less carbon atoms.

[0164] According to an embodiment, the surface energy of the liquid repellent material LRA may be greater than the surface energy of the dye, the pigment, or a combination thereof included in the reflection control layer RCL.

[0165] However, the present disclosure is not necessarily limited thereto. In an embodiment, for example, the liquid repellent material LRA may include various materials having liquid repellency and / or surface energy greater than that of a dye, a pigment, or a combination thereof included in the reflection control layer RCL.

[0166] According to an embodiment, the second layer L2 including the liquid repellent material LRA may be disposed between the first layer L1 and the protective film PF. The liquid repellent material LRA may be directly adjacent to the protective film PF at a side of the second layer L2 that is not adjacent to the first layer L1. In an embodiment, for example, the second layer L2 may contact the protective film PF.

[0167] According to an embodiment, the hardness of the first layer L1 may be less than the hardness of the second layer L2. In an embodiment, for example, the second layer L2 may also mainly include the liquid repellent material LRA, and the liquid repellent material LRA may be further solidified in the region where the second layer L2 is formed. Therefore, the second layer L2 may have a hardness greater than the hardness of the first layer L1 that does not include the liquid repellent material LRA or mainly includes a relatively small amount of the liquid repellent material LRA.

[0168] According to an embodiment, the second layer L2 adjacent to the protective film PF may have high hardness and may limit the movement of the dye, pigment, or a combination thereof included in the reflection control layer RCL. In an embodiment, for example, the dye, pigment, or a combination thereof included in the reflection control layer RCL may be physically separated from the protective film PF by the second layer L2.

[0169] In such an embodiment, the dye, pigment, or a combination thereof included in the reflection control layer RCL can be prevented from being dyed to a layer directly adjacent to the reflection control layer RCL, such as the protective film PF, and thus the possibility of color change (or deformation) of the protective film PF, etc. can be reduced. As a result, since the reflection control layer RCL includes a layer in which the liquid-repellent material LRA is distributed on the upper surface, the color change of the protective film PF, etc. can be effectively prevented, and thus the display quality of the display device DD can be improved.

[0170] In an embodiment, when the dye, pigment, or combination thereof included in the reflection control layer RCL is dyed to a layer directly adjacent to the reflection control layer RCL, the layer directly adjacent to the reflection control layer RCL (such as the protective film PF) may be contaminated, the color quality of the display device DD may be distorted over time, and light of an abnormal color may be emitted. According to an embodiment, the layer directly adjacent to the reflection control layer RCL (such as the protective film PF) can be effectively prevented from being dyed, the structural stability of the display device DD can be ensured, and the reliability of quality can be improved.

[0171] In an embodiment, the structure of the reflection control layer RCL is not necessarily limited to the above example. In an alternative embodiment, for example, the reflection control layer RCL may include a dye, a pigment, or a combination thereof, the reflection control layer RCL may not include the second layer L2, and a separate layer including a liquid repellent material LRA may be disposed on the reflection control layer RCL.

[0172] The protection film PF may be disposed on the reflection control layer RCL. The protection film PF may be relatively disposed outside the display device DD to protect the internal configuration of the display device DD.

[0173] According to an embodiment, the protection film PF may contact the reflection control layer RCL. In an embodiment, for example, the protection film PF may be physically separated from the first layer L1 and may be physically in contact with the second layer L2.

[0174] According to an embodiment, the protection film PF may include one of a polyethylene terephthalate (PET) film, a low reflection film, a polarization film, and a transmittance controllable film. However, the present disclosure is not limited thereto.

[0175] The structure of the external unit OUP according to the embodiment is not limited to the above-described example. In the embodiment, for example, the external unit OUP may further include a window configured to transmit light.

[0176] In the following, reference will be made to Figures 7 to 9 A method of manufacturing a display device DD according to an embodiment is described. Hereinafter, for convenience of description, any repeated detailed description of elements that are the same as or similar to those described above will be omitted or simplified.

[0177] Figures 7 to 9 is a schematic cross-sectional view for each process step of a method for manufacturing a display device according to an embodiment.

[0178] For ease of description, Figures 7 to 9 Based on the above Figure 6 The cross-sectional structure shown in schematically illustrates a cross-sectional structure of a display device DD during an embodiment of a manufacturing process.

[0179] refer to Figure 7 In an embodiment of a method of manufacturing a display device DD, a display unit DP may be manufactured first, and then a sensor unit TSP may be disposed on the display unit DP. In an embodiment, for example, a structure related to the display unit DP and the sensor unit TSP may be formed by patterning a conductive layer, an insulating layer, and / or an organic material layer on a display base layer DBSL.

[0180] The layers on the display substrate layer DBSL may be formed based on a typical process for manufacturing semiconductor devices. In an embodiment, for example, a conductive layer or an insulating layer on the display substrate layer DBSL may be formed by a photolithography process and may be deposited by various methods (sputtering, chemical vapor deposition, etc.). The present disclosure is not necessarily limited to a specific example.

[0181] In this process, a light blocking layer BM may be disposed on the sensor unit TSP, and a base reflection control layer RCL′ including a liquid repellent material LRA may be disposed on the light blocking layer BM.

[0182] In this process, the light blocking layer BM may be selectively patterned in a partial region to define the above-mentioned sub-pixel area SPXA.

[0183] According to an embodiment, the base reflection control layer RCL' may be provided to manufacture the reflection control layer RCL including the first layer L1 and the second layer L2. The base reflection control layer RCL' may be a layer defined before the liquid repellent material LRA moves to the outside.

[0184] According to an embodiment, the substrate reflection control layer RCL' may be provided by various process methods. In an embodiment, for example, the substrate reflection control layer RCL' may be formed by a photolithography process, or may be formed by an inkjet process. However, the present disclosure is not limited to a specific example.

[0185] In this process, the liquid repellent material LRA in the substrate reflection control layer RCL' may be randomly distributed in the substrate reflection control layer RCL'. In an embodiment, for example, the liquid repellent material LRA in the substrate reflection control layer RCL' may be completely disposed in an inner region of the substrate reflection control layer RCL' and may be selectively not disposed in a partial region.

[0186] refer to Figure 8 , the liquid repellent material LRA may be moved to be adjacent to the second surface SF2, which is opposite to the first surface SF1 adjacent to the display unit DP and the sensor unit TSP, and thus the reflection control layer RCL may be provided. In this process, the upper surface (eg, the second surface SF2) of the substrate reflection control layer RCL' may be exposed.

[0187] According to an embodiment, the liquid-repellent material LRA may have a liquid repellency (or surface energy) greater than that of a dye, a pigment, or a combination thereof for forming the reflection control layer RCL, and thus the liquid-repellent material LRA may be moved to be adjacent to the exposed outer surface (e.g., the second surface SF2) of the reflection control layer RCL. Therefore, a first layer L1 substantially excluding the liquid-repellent material LRA and a second layer L2 in which the liquid-repellent material LRA is distributed in a film shape may be defined (or formed).

[0188] When this process is performed, the second layer L2 including the liquid-repellent material LRA may be completely disposed on the upper surface of the first layer L1 on which the dye, the pigment, or a combination thereof is formed.

[0189] In an embodiment, a curing process for the reflection control layer RCL may be subsequently performed. According to an embodiment, the curing process for the reflection control layer RCL may be performed after the liquid repellent material LRA moves to be adjacent to the second surface SF2.

[0190] According to an embodiment, the curing process may be a thermal curing process, and according to an embodiment, the curing process may be light (eg, ultraviolet (UV)) curing. However, the present disclosure is not limited thereto.

[0191] In this process, when the curing process is performed, the second layer L2 may be provided to have a hardness greater than that of the first layer L1.

[0192] refer to Fig. 9 , a protective film PF can be set on the reflection control layer RCL.

[0193] In this process, the protection film PF may be formed on the reflection control layer RCL and may contact the second layer L2. In an embodiment, for example, the protection film PF may be physically separated from the first layer L1, and the second layer L2 is interposed therebetween. Therefore, the first layer L1 may be effectively prevented from staining the protection film PF.

[0194] Thereafter, according to the embodiment, a window or the like may be further provided on the protection film PF, and the display device DD according to the embodiment may be provided.

[0195] The present invention should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the present invention to those skilled in the art.

[0196] While the invention has been particularly shown and described with reference to embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit or scope of the invention as defined by the appended claims.

Claims

1. A display device having a sub-pixel region, the display device comprising: A sub-pixel is arranged in the sub-pixel region, Wherein, each of the sub-pixels comprises: A display unit including a light emitting layer that emits light; and A reflection control layer is disposed on the display unit throughout the sub-pixel area, wherein the reflection control layer selectively absorbs light in a wavelength band, The reflection control layer includes a first layer and a second layer disposed on the first layer. wherein the thickness of the second layer is smaller than the thickness of the first layer, and Wherein, the second layer comprises a liquid-repellent material.

2. The display device according to claim 1, wherein: the reflection control layer is configured to absorb light in a non-emission wavelength band different from a wavelength band of the light emitted from the light emitting layer, The non-emission band includes a first non-emission band and a second non-emission band, The wavelength band of the light emitted from the light emitting layer includes a first wavelength band, a second wavelength band, and a third wavelength band, The first non-transmitting band includes a band between the third band and the second band, The second non-transmitting band includes a band between the second band and the first band, The first non-emission band includes at least a portion of a band within a range of 460 nm to 520 nm. The second non-emission band includes at least a portion of a band within a range of 560 nm to 620 nm, The first band is a red band, The second band is a green band, and The third waveband is a blue waveband.

3. The display device according to claim 1, wherein: The reflection control layer includes a dye, a pigment or a combination thereof, and The reflection control layer includes at least one selected from the group consisting of an oxazine-based compound, a cyanine-based compound, a tetrazolyl-based compound, and a squarylium-based compound.

4. The display device according to claim 1, wherein: The display unit comprises: A light emitting element including a first electrode, a second electrode, and the light emitting layer electrically connected between the first electrode and the second electrode; and A low-reflection inorganic layer is disposed on the light-emitting element, The second electrode is disposed on the light emitting layer, and Light reflected by the low-reflective inorganic layer and light reflected by the second electrode destructively interfere with each other.

5. The display device according to claim 1, further comprising: a light blocking layer, disposed between the display unit and the reflection control layer, wherein an opening is defined in the light blocking layer, The opening and the sub-pixel region overlap each other in a plan view, The reflection control layer contacts the light blocking layer, and The light blocking layer contacts the first layer and is spaced apart from the second layer.

6. The display device according to claim 1, wherein: The liquid repellency of the liquid repellent material is greater than the liquid repellency of the dye, pigment, or combination thereof included in the reflection control layer.

7. The display device according to claim 1, wherein: The surface energy of the liquid repellent material is greater than the surface energy of the dye, pigment, or combination thereof included in the reflection control layer.

8. The display device according to claim 1, wherein: The second layer has a film-shaped structure on the first layer.

9. The display device according to claim 1, wherein: The second layer has a harderness greater than that of the first layer.

10. The display device according to claim 1, wherein: In the second layer, the liquid repellent material is included at a concentration of 500 ppm or less.

11. The display device according to claim 1, further comprising: A protective film is disposed on the reflection control layer, The protective film contacts the second layer and is spaced apart from the first layer.

12. Display equipment, including: Display unit; as well as a reflection control layer disposed on the display unit, wherein the reflection control layer selectively absorbs light in a wavelength band and comprises a first surface facing the display unit and a second surface opposite to the first surface, wherein the reflection control layer comprises a first layer defining the first surface and a second layer disposed on the first layer and defining the second surface, and The second layer has a harderness greater than that of the first layer.

13. A method for manufacturing a display device, the method comprising: providing a display unit; as well as providing a substrate reflection control layer including a dye and a liquid repellent material on the display unit, The substrate reflection control layer includes a first surface adjacent to the display unit and a second surface opposite to the first surface, and Wherein, the method further comprises: moving the liquid-repellent material to be adjacent to the second surface.

14. The method according to claim 13, wherein: providing a reflection control layer based on the base reflection control layer by moving the liquid repellent material adjacent to the second surface, the reflection control layer comprising a first layer and a second layer disposed on the first layer and comprising the liquid repellent material, The method further comprises curing the reflection control layer, After the curing, the hardness of the second layer is greater than the hardness of the first layer, and Upon moving the liquid repellent material adjacent to the second surface, the second surface of the substrate reflection control layer is exposed.

15. The method according to claim 14, further comprising: A protective film is provided on the reflection control layer, The protective film is spaced apart from the first layer and contacts the second layer.

Images