Display device and electronic device including the same

Abstract

A display device and an electronic device including the same are disclosed. The display device includes a base layer, a display element layer on the base layer, and a light absorbing layer under the base layer and having a maximum light transmittance in a wavelength range of about 240 nm to about 550 nm. Accordingly, reflection of external light may be reduced, and excellent or appropriate reliability may be exhibited since the light absorbing layer is sufficiently and appropriately cured in a wavelength range in which light transmittance becomes maximum or maximized.

Description

[0001] This application claims priority to and the benefit of Korean Patent Application No. 10-2024-0038403 filed on March 20, 2024, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0002] Embodiments of the present disclosure described herein relate to a display device, for example, a display device with improved external light reflection. Embodiments of the present disclosure relate to an electronic device including the display device. Background Art

[0003] Various display devices are being developed for multimedia devices such as televisions, mobile phones, tablet computers, and / or game consoles. The display devices may be rigid or flexible (e.g., foldable, rollable, and / or bendable).

[0004] In various types (or categories) of display devices, components for reducing the reflection of external light are used to improve display quality. However, in order to develop components for improving reflection, it is necessary or desirable that the components not only exhibit excellent or suitable optical properties by appropriately or sufficiently absorbing external light, but also have excellent or suitable durability and reliability depending on the usage state of the display device.

[0005] The information disclosed in this Background section is for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not constitute prior art. Summary of the Invention

[0006] An aspect according to one or more embodiments of the present disclosure relates to a display device in which light in the entire visible light wavelength range is advantageously absorbed and thus light introduced into the interior of the display device, reflected, and then extracted to the outside is minimized or reduced.

[0007] Additionally, aspects according to one or more embodiments of the present disclosure relate to a display device including a light absorbing layer, which has excellent or suitable light absorption, can be more easily applied to the manufacture of display devices, and has excellent or suitable reliability.

[0008] Additional aspects of the embodiments will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the disclosed presented embodiments.

[0009] In one or more embodiments of the present disclosure, a display device includes: a base layer; a display element layer on the base layer; and a light absorption layer below the base layer and having a maximum transmittance within a wavelength range of about 240 nm to about 550 nm.

[0010] In one or more embodiments, the base layer may include a polyimide film having flexibility.

[0011] In one or more embodiments, the base layer may have a maximum light transmittance within a wavelength range of about 500 nm to about 850 nm.

[0012] In one or more embodiments, the light absorbing layer may include: a first sub-light absorbing layer having a maximum transmittance within a first wavelength range; and a second sub-light absorbing layer between the first sub-light absorbing layer and the base layer, and having a maximum transmittance within a second wavelength range having a wavelength longer than the first wavelength range.

[0013] In one or more embodiments, the base layer may include a transparent glass substrate having a light transmittance of about 80% or greater within a wavelength range of about 300 nm to about 800 nm.

[0014] In one or more embodiments, the light absorbing layer may include: a first sub-light absorbing layer having a maximum transmittance in a wavelength range of about 300 nm to about 450 nm; a second sub-light absorbing layer between the first sub-light absorbing layer and the base layer and having a maximum transmittance in a wavelength range of about 500 nm to about 600 nm; and a third sub-light absorbing layer between the second sub-light absorbing layer and the base layer and having a maximum transmittance in a wavelength range of about 650 nm to about 800 nm.

[0015] In one or more embodiments, the light absorbing layer may include a base resin and at least one of a blue colorant and a green colorant.

[0016] In one or more embodiments, the light absorbing layer may be directly beneath the base layer.

[0017] In one or more embodiments of the present disclosure, a display device includes: a base layer having a maximum transmittance within a first wavelength range; a display element layer on the base layer and including a light-emitting element; and a light-absorbing layer below the base layer and having a maximum transmittance within a second wavelength range having a wavelength shorter than the first wavelength range.

[0018] In one or more embodiments, the base layer may be a polyimide film having a maximum light transmittance in a wavelength range of about 500 nm to about 850 nm.

[0019] In one or more embodiments, the light absorbing layer may include a first sub-light absorbing layer having a maximum transmittance within a wavelength range of about 300 nm to about 450 nm.

[0020] In one or more embodiments, the light absorbing layer may further include a second sub-light absorbing layer between the first sub-light absorbing layer and the base layer and having a maximum transmittance within a wavelength range of about 500 nm to about 600 nm.

[0021] In one or more embodiments, the second sub-light absorbing layer may be directly below the base layer, and the first sub-light absorbing layer may be directly below the second sub-light absorbing layer.

[0022] In one or more embodiments, the light absorbing layer may be directly beneath the base layer.

[0023] In one or more embodiments, the display device may further include an optical layer on the display element layer and including a polarizing layer.

[0024] In one or more embodiments of the present disclosure, a display device includes: a display element layer including a light-emitting element; a base layer below the display element layer and having an absorbance of about 80% or greater of a first light; and a light absorption layer directly below the base layer and having an absorbance of about 80% or greater of a second light, the second light having a wavelength longer than that of the first light.

[0025] In one or more embodiments, the first light may have a wavelength in the range of about 240 nm to about 550 nm, and the second light may have a wavelength in the range of about 500 nm to about 850 nm.

[0026] In one or more embodiments, the light absorbing layer can be configured to transmit ultraviolet light.

[0027] In one or more embodiments, the light absorbing layer may include a plurality of sub-light absorbing layers, and the sub-light absorbing layers may include: a first sub-light absorbing layer, below the base layer and configured to transmit ultraviolet light; and a second sub-light absorbing layer, between the first sub-light absorbing layer and the base layer, configured to absorb ultraviolet light and configured to transmit infrared light.

[0028] In one or more embodiments, the base layer may be a polyimide film, and the light absorbing layer may include at least one of a blue colorant and a green colorant.

[0029] An electronic device according to one or more embodiments of the present disclosure includes the aforementioned display device as described herein. In one or more embodiments, the electronic device may be a smartphone, a television, a monitor, a tablet computer, an electric vehicle, a mobile phone, a tablet personal computer (PC), a mobile communication terminal, an electronic notebook, an electronic book, a portable multimedia player (PMP), a navigation device, an ultra-mobile PC (UMPC), a laptop computer, a billboard, an Internet of Things (IoT) device, a smartwatch, a watch phone, or a head-mounted display (HMD). BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are included to provide a further understanding of the subject matter of the present disclosure and are incorporated into and constitute a part of this specification. The accompanying drawings illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. In the drawings: Figure 1 is a perspective view of a display device according to one or more embodiments; Figure 2 is an exploded perspective view of a display device according to one or more embodiments; Figure 3 is a cross-sectional view of a display device according to one or more embodiments, showing Figure 2 A portion of the line I-I'; Figure 4 is an enlarged cross-sectional view of a portion of the display device; Figure 5 shows light transmittance properties in a display device according to one or more embodiments; Figure 6 schematically illustrates light absorption characteristics in a display device according to one or more embodiments; Figure 7 is a cross-sectional view of a display device according to one or more embodiments; Figure 8 is a cross-sectional view of a display device according to one or more embodiments; Figure 9 shows light transmittance properties in a display device according to one or more embodiments; 10A to 10C are views showing some steps of manufacturing a display device according to one or more embodiments; and 11A to 11D are views illustrating some steps of manufacturing a display device according to one or more embodiments. DETAILED DESCRIPTION

[0031] The subject matter of the present disclosure may be implemented with various suitable modifications and in various suitable forms, and example embodiments are shown in the drawings and described in more detail in the text. However, it will be understood that the present disclosure is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure.

[0032] In this specification, it will be understood that when an element (or region, layer, part, etc.) is referred to as being “on”, “connected to” or “coupled to” another element, it can be directly arranged / directly connected / directly coupled to the other element or intervening elements may be arranged between them.

[0033] The same reference numerals or symbols refer to the same elements throughout. In addition, in the drawings, the thickness, proportions, and sizes of elements may be exaggerated to effectively describe the technical content. The term "and / or" includes all combinations of one or more of the relevant listed elements.

[0034] Although the terms first, second, etc. can be used to describe one or more suitable elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, without departing from the scope of this disclosure, the first element can be referred to as the second element, and similarly, the second element can also be referred to as the first element. Unless the context clearly indicates otherwise, the singular also includes the plural.

[0035] In addition, terms such as "below," "lower," "above," "upper," etc. may be used to describe the relationship of one element to another element shown in the drawings. It will be understood that the terms are relative concepts and are described based on the orientation depicted in the drawings.

[0036] It will be understood that when used in this specification, the terms “comprise” or “include” specify the presence of stated features, integers, steps, operations, elements, components or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components or combinations thereof.

[0037] In this specification, it will be understood that "directly disposed" means that there is no intervening layer, film, region, plate, etc. between one part and another part of the layer, film, region, plate, etc. For example, "directly disposed" may mean disposed between two layers or two members without using additional members such as adhesive members.

[0038] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. In addition, terms (such as those defined in general dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and should not be interpreted in an idealized or overly formal sense unless expressly defined as such herein.

[0039] Hereinafter, a display device according to one or more embodiments will be described in more detail with reference to the accompanying drawings.

[0040] Figure 1 is a perspective view illustrating a display device according to one or more embodiments. Figure 2 is an exploded perspective view of a display device according to one or more embodiments. Figure 3 is a cross-sectional view of a display device according to one or more embodiments. Figure 3 It can be along Figure 2 A cross-sectional view taken along line II'.

[0041] Reference Figure 1 The display device ED can be activated in response to an electrical signal and display an image. For example, the display device ED can be a large device such as a television or outdoor billboard, as well as a small or medium-sized device such as a monitor, a mobile phone, a tablet computer, a car navigation unit, and / or a game console. However, one or more embodiments of the display device ED are provided as examples, and the display device ED is not limited to any one embodiment without departing from the spirit or scope of the present disclosure.

[0042] The display device ED may be rigid or flexible. The term "flexible" means having a bendable property (eg, being bendable). For example, a flexible display device ED may include a bendable device, a rollable device, and / or a foldable device.

[0043] In one or more embodiments, Figure 1In the following figures, the first to fourth direction axes DR1 to DR4 are shown. The directions indicated by the first to fourth direction axes DR1, DR2, DR3, and DR4 described herein may have relative concepts and therefore may be changed to other directions. In an embodiment, the directions indicated by the first to fourth direction axes DR1, DR2, DR3, and DR4 may be referred to as first to fourth directions DR1, DR2, DR3, and DR4, and may be represented by the same reference numerals or symbols. In this specification, the first direction axis DR1 and the second direction axis DR2 may be orthogonal to each other, and the third direction axis DR3 and the fourth direction axis DR4 may both be normal directions to the plane defined by the first direction axis DR1 and the second direction axis DR2. In one or more embodiments, the third direction axis DR3 and the fourth direction axis DR4 may be relative to each other.

[0044] The thickness direction of the display device ED may be parallel to a third directional axis DR3, which is a normal direction to the plane defined by the first directional axis DR1 and the second directional axis DR2. The display device ED may provide an image IM to a user via its display surface. In this specification, the front surface (or top surface) and rear surface (or bottom surface) of each component are defined based on the direction along which the image IM is displayed. In this specification, the direction of the third directional axis DR3 may be defined as the direction along which the image IM is displayed, and the direction of the fourth directional axis DR4 may be defined as the direction opposite to the third directional axis DR3.

[0045] In this specification, the term "on a plane" may be defined as a state when viewed in the third direction DR3. In this specification, the term "in a cross-section" may be defined as a state when viewed in the first direction DR1 or the second direction DR2. In one or more embodiments, the directions indicated by the first to fourth directions DR1, DR2, DR3, and DR4 are relative concepts and may be changed to other directions.

[0046] A display device ED according to one or more embodiments can display an image IM through an active area AA-ED. The active area AA-ED may include a flat surface defined by a first direction DR1 and a second direction DR2. The active area AA-ED may also include a curved surface that curves from at least one side of the flat surface defined by the first direction DR1 and the second direction DR2. The surface on which the image IM is displayed may correspond to the front surface of the display device ED. The image IM may include not only dynamic images but also static images.

[0047] The peripheral area NAA-ED may be adjacent to the active area AA-ED. The peripheral area NAA-ED may be around (e.g., surrounding) the active area AA-ED. Therefore, the shape of the active area AA-ED may be substantially defined by the peripheral area NAA-ED. However, this is shown as an example, and the present disclosure is not limited thereto. The peripheral area NAA-ED may be adjacent to only one side of the active area AA-ED, or the peripheral area NAA-ED may not be provided. The display device ED according to one or more embodiments of the present disclosure may include an active area AA-ED having one or more suitable shapes, but is not limited to any one embodiment.

[0048] In a plane, the display device ED may have a rectangular shape having short sides extending in a first direction DR1 and long sides extending in a second direction DR2 intersecting the first direction DR1. However, one or more embodiments of the present disclosure are not limited thereto, and in a plane, the display device ED may have one or more suitable shapes, such as a circular shape or a polygonal shape.

[0049] In one or more embodiments, the display device ED of one or more embodiments may be a flexible display device. At least a portion of the display device ED of one or more embodiments may be bendable and deformable. In one or more embodiments, the display device ED may be a foldable device that can variably or appropriately deform between a folded state and an unfolded state relative to at least one folding axis extending in one direction.

[0050] The display device ED of one or more embodiments may detect external input applied from the outside. The external input may include one or more suitable types (or kinds) of input, such as force, pressure, temperature, and light.

[0051] Reference Figures 1 to 3 In one or more embodiments, a display device ED includes a display module DM. The display module DM may be a component configured to generate an image and detect an input applied from the outside. The display module DM according to one or more embodiments may include a display panel DP and an input sensor ISP on the display panel DP. In one or more embodiments, the display module DM may further include an optical layer PL on the input sensor ISP.

[0052] The display device ED of one or more embodiments may include a window module WM above the display module DM. In one or more embodiments, the display device ED may further include an electronic module EM, a power module PSM, and / or a housing EDC.

[0053] According to one or more embodiments, an active area AA and a peripheral area NAA may be defined in the display module DM. The active area AA may be activated in response to an electrical signal. The peripheral area NAA may be positioned adjacent to at least one side of the active area AA.

[0054] The effective area AA can be Figure 1 The peripheral area NAA may be around the active area AA (eg, may surround the active area AA). However, one or more embodiments of the present disclosure are not limited thereto and may be different from the active area AA. Figure 2 Unlike the example shown in FIG. 1 , a portion of the peripheral area NAA may not be provided. The peripheral area NAA may be Figure 1 The peripheral area NAA-ED of the display device ED shown in FIG.

[0055] The display module DM according to one or more embodiments may include a peripheral area NAA on at least one side of the active area AA, and a driving circuit and / or driving line for driving the active area AA may be in the peripheral area NAA.

[0056] The window module WM may be on the display module DM and may be configured to protect the display module DM from external impacts and / or scratches. The window module WM may cover the exterior (e.g., the entire exterior) of the display module DM. The front surface of the window module WM may correspond to the upper surface of the display device ED described above.

[0057] In one or more embodiments, the window module WM may include a base substrate WP of an optically transparent insulating material. The base substrate WP may include an optically transparent insulating material. The base substrate WP may include at least one of a glass substrate and a synthetic resin film. The base substrate WP may have a single-layer structure or a multi-layer structure incorporating multiple films. The window module WM may further include functional layers on the base substrate WP, such as an anti-fingerprint layer, a phase control layer, and / or a hard coating layer.

[0058] The window module WM may further include an adhesive layer AP. The base substrate WP and the display module DM may be bonded via the adhesive layer AP. However, one or more embodiments of the present disclosure are not limited thereto. The adhesive layer AP may not be provided, and the window module WM may be directly on the display module DM.

[0059] The window module WM can be divided into a transmissive portion TA and a bezel portion BZA. The transmissive portion TA may correspond to the active area AA of the display module DM, and the bezel portion BZA may correspond to the peripheral area NAA of the display module DM. The bezel portion BZA may define the shape of the transmissive portion TA. The bezel portion BZA may be adjacent to the transmissive portion TA and surround (e.g., encircle) the transmissive portion TA. However, one or more embodiments of the present disclosure are not limited to those shown in the drawings, and the bezel portion BZA may only be adjacent to one side of the transmissive portion TA, or a portion of the bezel portion BZA may not be provided.

[0060] The display module DM may further include a main circuit board MCB, a flexible circuit film FCB, a sensor control circuit T-IC, and a main controller MC.

[0061] The main circuit board MCB may be electrically connected to the display module DM via the flexible circuit film FCB. The main circuit board MCB may be electrically connected to the electronic module EM via a connector.

[0062] A flexible circuit film FCB may be connected to each of the display panel DP and the input sensor ISP to electrically connect the display panel DP and the input sensor ISP to the main circuit board MCB. In one or more embodiments, the input sensor ISP may be electrically connected to the display panel DP and may also be electrically connected to the main circuit board MCB via the flexible circuit film FCB. However, one or more embodiments of the present disclosure are not limited thereto, and the input sensor ISP may be electrically connected to the main circuit board MCB via an additional flexible circuit film. In one or more embodiments, the flexible circuit film FCB may not be provided, and the main circuit board MCB may be directly connected to the display panel DP.

[0063] The sensor control circuit T-IC and the main controller MC may both be provided in the form of an integrated chip. The sensor control circuit T-IC and the main controller MC may be mounted on a main circuit board MCB. However, one or more embodiments of the present disclosure are not limited thereto.

[0064] The main controller MC may control the overall operation of the display device ED. For example, the main controller MC may control the operation of the display panel DP and the input sensor ISP. In one or more embodiments, the main controller MC may control the operation of the electronic module EM. The main controller MC may include at least one microprocessor.

[0065] In one or more embodiments, the display module DM may include a data driver including a driving circuit for driving pixels of the display panel DP. The data driver may receive image data and control signals from the main controller MC. For example, the control signals may include an input vertical synchronization signal, an input horizontal synchronization signal, a master clock, and / or a data enable signal. The data driver may be mounted in the peripheral area NAA of the display panel DP.

[0066] The sensor control circuit T-IC may provide an electrical signal for driving the input sensor ISP to the input sensor ISP. The sensor control circuit T-IC may receive a control signal such as a clock signal from the main controller MC.

[0067] The electronic module EM may include one or more suitable functional modules required or desired to drive the display device ED. For example, the electronic module EM may include a wireless communication module, an image input module, an audio input module, an audio output module, a memory, and / or an external interface module. The aforementioned modules of the electronic module EM may be mounted on the main circuit board MCB or may be electrically connected to the main circuit board MCB via an additional flexible circuit board.

[0068] The power supply module PSM may be electrically connected to the electronic module EM. The power supply module PSM may supply power required or desired for the overall operation of the display device ED. For example, the power supply module PSM may include a battery device.

[0069] The window module WM and the housing EDC can be combined to form the exterior appearance of the display device ED. The window module WM and the housing EDC can also be combined to form an interior space in which the components of the display device ED are housed. For example, the components of the display device ED can be housed in the interior space formed by the window module WM and the housing EDC. The display module DM, the flexible circuit film FCB, the main circuit board MCB, the electronics module EM, and / or the power supply module PSM, etc. can be housed in this interior space. A portion of the display module DM can be bent so that the flexible circuit film FCB and the main circuit board MCB face the rear surface of the display module DM and can be housed in the housing EDC.

[0070] The housing EDC may be made of a relatively rigid material. For example, the housing EDC may be made of glass, plastic, and / or metal, and / or a frame and / or plate formed from a combination thereof. The housing EDC may absorb external impacts or prevent or reduce external penetration of impurities, moisture, and the like, thereby protecting the display module DM and the like housed in the housing EDC.

[0071] In the display device ED of one or more embodiments, the display panel DP may be configured to generate (e.g., substantially generate) an image. The display panel DP may be a light-emitting display panel. For example, the display panel DP may be an organic light-emitting display panel, an inorganic light-emitting display panel, a quantum dot display panel, a micro-LED display panel, and / or a nano-LED display panel. The display panel DP may be referred to as a display layer.

[0072] Reference Figure 2 and Figure 3 The display module DM may further include an optical layer PL above the display panel DP. The optical layer PL may be on the input sensor ISP. The optical layer PL may be a reflection-reducing layer configured to reduce the reflectivity of external light incident from outside the display module DM. The optical layer PL may be formed on the input sensor ISP through a continuous process. In one or more embodiments, the optical layer PL may include a polarizing layer.

[0073] For example, the optical layer PL may include a polarizing layer including a retarder and / or a polarizer, a multi-layer reflective layer that causes destructive interference of reflected light, and / or a color filter corresponding to the pixel arrangement and emission color of the display panel DP. For example, when the optical layer PL includes a color filter, the color filter may be arranged taking into account the emission color of the pixels included in the display panel DP. In addition, in one or more embodiments, the optical layer PL may not be provided.

[0074] The display device ED of one or more embodiments may include a light absorbing layer LAM below the display module DM. The light absorbing layer LAM may be directly below the display module DM. The light absorbing layer LAM may absorb at least a portion of light incident on the display module DM from outside the display device ED. At least a portion of the light provided from outside the display device ED is absorbed by the light absorbing layer LAM, thereby minimizing or reducing light reflected from the display device ED and emitted to the outside.

[0075] Figure 4 is an enlarged cross-sectional view of a portion of the display device. Figure 4 In FIG. 1 , some components of the display device ED are not provided, and the configurations of the display module DM and the light absorbing layer LAM are shown in more detail. Figure 4 Only the active area AA is shown (see Figure 2 ) a light emitting element and its peripheral portion, and Figure 4 and the contents described with reference thereto can be similarly applied to the active area AA (see Figure 2 ) and other light-emitting elements and their peripheral parts.

[0076] In one or more embodiments, the display module DM includes a display panel DP, an input sensor ISP, and an optical layer PL. The display panel DP includes a base layer BS-F, a circuit layer D-CL, a display element layer D-EL, and an encapsulation layer TFE. In one or more embodiments, the light absorbing layer LAM may be below the base layer BS-F. The light absorbing layer LAM may be directly below the base layer BS-F.

[0077] The substrate layer BS-F may be a member configured to provide a substrate surface on which the circuit layer D-CL is disposed. The substrate layer BS-F may be a rigid substrate or a flexible substrate that is bendable, foldable, and / or rollable. The substrate layer BS-F may be a glass substrate, a metal substrate, and / or a polymer substrate, etc. However, one or more embodiments of the present disclosure are not limited thereto, and the substrate layer BS-F may be an inorganic layer, an organic layer, or a composite material layer including an inorganic layer and an organic layer.

[0078] exist Figure 4 In some aspects shown in , etc., the base layer BS-F can include a flexible polymer film. For example, in one or more embodiments, the base layer BS-F can be a flexible polyimide film.

[0079] When the base layer BS-F of one or more embodiments is a polyimide film, the base layer BS-F may have a maximum transmittance within a first wavelength range. The base layer BS-F may have a maximum transmittance within a wavelength range of about 500 nm to about 850 nm. For example, the base layer BS-F may have a maximum transmittance within a wavelength range of about 550 nm to about 800 nm. In one or more embodiments, the base layer BS-F may exhibit a transmittance of about 30% or greater within a wavelength range of about 550 nm to about 800 nm. In one or more embodiments, the base layer BS-F according to one or more embodiments may exhibit a transmittance of about 50% or greater within a wavelength range of about 600 nm to about 800 nm.

[0080] In one or more embodiments, the base layer BS-F may have a maximum transmittance within a wavelength range of about 500 nm to about 850 nm, and may exhibit low transmittance within a wavelength range of about 300 nm to about 500 nm. When the base layer BS-F of one or more embodiments is a polyimide film, the base layer BS-F may absorb light having a relatively short wavelength range of about 300 nm to about 500 nm and may be configured to exhibit a pale yellow color.

[0081] In one or more embodiments, the absorbance of the base layer BS-F with respect to the first light may be about 80% or greater. For example, the absorbance of the base layer BS-F with respect to the first light in the wavelength range of about 300 nm to about 500 nm may be about 80% or greater.

[0082] The circuit layer D-CL may be on the base layer BS-F. The circuit layer D-CL may include a plurality of insulating layers, a plurality of transistors, conductive patterns and / or signal lines, etc. In one or more embodiments, a plurality of inorganic films, a plurality of organic films, semiconductor layers and conductive layers may be formed by coating and / or deposition, etc. Thereafter, the inorganic films, organic films, semiconductor layers and conductive layers may be patterned (e.g., selectively patterned) by performing a photolithography process. In this way, a circuit layer D-CL including a plurality of insulating layers each formed of an inorganic film and an organic film, transistors including semiconductor patterns formed of semiconductor layers, and / or conductive patterns and signal lines formed of conductive layers, etc. may be formed. In Figure 4 , the configuration of the circuit layer D-CL is shown, and the transistors and / or signal lines of the circuit layer D-CL can be electrically connected to the light-emitting elements LD of the display element layer D-EL.

[0083] Thereafter, the display element layer D-EL may be formed on the circuit layer D-CL, and the encapsulation layer TFE covering the display element layer D-EL may be formed.

[0084] The display element layer D-EL may include a pixel defining layer PDL and a light emitting element LD. The light emitting element LD may include a first electrode AE, a light emitting layer EL, and a second electrode CE.

[0085] The first electrode AE ​​may be referred to as a pixel electrode. The first electrode AE ​​may be formed of a metal material, a metal alloy, and / or a conductive compound. The first electrode AE ​​may be an anode or a cathode. The first electrode AE ​​may be a transmissive electrode, a transflective electrode, or a reflective electrode. When the first electrode AE ​​is a transmissive electrode, the first electrode AE ​​may include a transparent metal oxide, such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), and / or indium tin zinc oxide (ITZO). When the first electrode AE ​​is a transflective electrode or a reflective electrode, the first electrode AE ​​may include Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF, Mo, Ti, W, or compounds or mixtures thereof (e.g., a mixture of Ag and Mg), or a material having a multilayer structure such as LiF / Ca or LiF / Al. In one or more embodiments, the first electrode AE ​​may have a multilayer structure including a reflective film or a transflective film formed from the aforementioned materials and a transparent conductive film formed from, for example, indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), or indium tin zinc oxide (ITZO). For example, the first electrode AE ​​may have a three-layer structure of ITO / Ag / ITO, but is not limited thereto. The present disclosure is not limited thereto, and the first electrode AE ​​may include the aforementioned metal materials, a combination of two or more metal materials selected from the aforementioned metal materials, and / or oxides of the aforementioned metal materials.

[0086] The pixel defining layer PDL may be on the circuit layer D-CL. In one or more embodiments, the pixel defining layer PDL may be formed of a polymer resin. For example, the pixel defining layer PDL may be formed of a polyacrylate resin and / or a polyimide resin. In one or more embodiments, in addition to the polymer resin, the pixel defining layer PDL may also include an inorganic material. In one or more embodiments, the pixel defining layer PDL may be formed of a light absorbing material and / or a black pigment and / or a black dye. The pixel defining layer PDL formed of a black pigment and / or a black dye may constitute a black pixel defining layer. When forming the pixel defining layer PDL, carbon black or the like may be used as the black pigment and / or the black dye, but one or more embodiments of the present disclosure are not limited thereto.

[0087] In one or more embodiments, the pixel defining layer (PDL) may be formed of an inorganic material, such as silicon nitride, silicon oxide, and / or silicon oxynitride.

[0088] A pixel opening for exposing a portion of the first electrode AE ​​may be defined in the pixel defining layer PDL. For example, a portion of the first electrode AE ​​may be exposed through the pixel opening in the pixel defining layer PDL. In the display module DM of one or more embodiments, a light-emitting area may be separated by the pixel defining layer PDL. In the display module DM, the light-emitting area may be defined as a portion of the first electrode AE ​​that is not overlapped with the pixel defining layer PDL, is exposed, and overlaps with the light-emitting layer EL. For example, a portion of the first electrode AE ​​that is exposed by the pixel opening in the pixel defining layer PDL and overlaps with the light-emitting layer EL may define the light-emitting area.

[0089] In the light emitting element LD, the light emitting layer EL may be on the first electrode AE. In one or more embodiments, the light emitting layer EL may be configured to emit light having at least one color of blue, red, and green. In one or more embodiments, the light emitting layer EL may be disposed over the entire active area AA (see FIG. Figure 2 ) provides blue light. In one or more embodiments, the display module DM (see Figure 2 ) may further include a light control unit that converts the wavelength of light emitted from the light emitting element LD.

[0090] The second electrode CE may be on the light emitting layer EL. The second electrode CE may have an integral shape and may be formed in the active area AA (see FIG. Figure 2 ) is shared by multiple light-emitting elements LD. The second electrode CE can be referred to as a common electrode. The second electrode CE can be a cathode or an anode. For example, when the first electrode AE ​​is an anode, the second electrode CE can be a cathode, and when the first electrode AE ​​is a cathode, the second electrode CE can be an anode.

[0091] The second electrode CE may be a transmissive electrode, a transflective electrode, or a reflective electrode. When the second electrode CE is a transmissive electrode, the second electrode CE may include a transparent metal oxide, such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), and / or indium tin zinc oxide (ITZO). Alternatively, the second electrode CE may be formed of Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF, Mo, Ti, W, or a compound or mixture thereof (e.g., a mixture of Ag and Mg), or a material having a multilayer structure such as LiF / Ca or LiF / Al.

[0092] In one or more embodiments, the hole control layer may be between the first electrode AE ​​and the light-emitting layer EL. The hole control layer may include a hole transport layer and a hole injection layer. The electron control layer may be between the light-emitting layer EL and the second electrode CE. The electron control layer may include an electron transport layer and an electron injection layer. The hole control layer and the electron control layer may be disposed throughout the active area AA (see FIG. Figure 2 ) is formed commonly in a plurality of light emitting elements LD by using an opening mask.

[0093] The encapsulation layer TFE may be on the display element layer D-EL. The encapsulation layer TFE may include a first inorganic layer IL1, an organic layer OL, and a second inorganic layer IL2 sequentially stacked. However, the layers constituting the encapsulation layer TFE are not limited thereto.

[0094] The inorganic layers IL1 and IL2 can protect the display element layer D-EL from moisture and oxygen, while the organic layer OL can protect the display element layer D-EL from foreign matter such as dust particles. The inorganic layers IL1 and IL2 can include at least one of silicon nitride, silicon oxynitride, silicon oxide, titanium oxide, and aluminum oxide. The organic layer OL can include an acrylate-based organic material. However, the types (or kinds) of materials constituting the inorganic layers IL1 and IL2 and the organic layer OL are not limited thereto.

[0095] The input sensor ISP may be on the packaging layer TFE. In one or more embodiments, the input sensor ISP may include an insulating layer and a sensor conductive layer. In one or more embodiments, the input sensor ISP may be directly on the packaging layer TFE.

[0096] According to one or more embodiments, the display module DM may include an optical layer PL. In one or more embodiments, the optical layer PL may be directly on the input sensor ISP. However, one or more embodiments of the present disclosure are not limited thereto, and an adhesive layer or the like may be further included between the optical layer PL and the input sensor ISP. The optical layer PL may be a reflection-reducing layer configured to reduce external light. In one or more embodiments, the optical layer PL may not be provided.

[0097] Figure 5The transmittance properties in the display device of one or more embodiments are shown. The light absorbing layer LAM of one or more embodiments may have a maximum transmittance in a wavelength range of about 240nm to about 550nm. For example, the light absorbing layer LAM of one or more embodiments may have a maximum transmittance in a wavelength range of about 300nm to about 500nm. In the display device ED of one or more embodiments, the light absorbing layer LAM may include at least one sub-light absorbing layer having a maximum transmittance in a wavelength range of about 300nm to about 500nm. For example, the light absorbing layer LAM according to one or more embodiments may exhibit a transmittance of about 20% or more in a wavelength range of about 300nm to about 500nm. For example, in one or more embodiments, the light absorbing layer LAM may exhibit a transmittance of about 30% around a wavelength region of about 400nm.

[0098] The light absorbing layer LAM and the base layer BS-F may respectively exhibit maximum transmittance in different wavelength ranges. The absorbance of the base layer BS-F relative to the first light may be about 80% or greater, and the absorbance of the light absorbing layer LAM relative to the second light may be about 80% or greater. The second light may have a longer wavelength than the first light. For example, the first light has a wavelength of about 240nm to about 550nm, and the second light has a wavelength of about 500nm to about 850nm. For example, the first light has a wavelength within the wavelength range of about 300nm to about 500nm, and the second light has a wavelength within the wavelength range of about 500nm to about 800nm.

[0099] In one or more embodiments, the light absorbing layer LAM may have a maximum transmittance in a wavelength range of about 300 nm to about 500 nm and exhibit a low transmittance in a relatively long wavelength range of about 550 nm to about 800 nm. The light absorbing layer LAM may absorb light having a relatively long wavelength range of about 550 nm to about 800 nm and display a light blue color. In one or more embodiments, the light absorbing layer LAM may display blue or green.

[0100] The light absorbing layer LAM may include a base resin and a colorant. The light absorbing layer LAM may include a colorant to display a set or specific color. In one or more embodiments, the colorant included in the light absorbing layer LAM may include at least one of a blue colorant and a green colorant. The colorant may be a pigment and / or a dye. The light absorbing layer LAM may include both a blue colorant and a green colorant in one layer, or may include colorants having different colors from each other in corresponding sub-light absorbing layers. In one or more embodiments, the light absorbing layer LAM may also include only a blue colorant. However, one or more embodiments of the present disclosure are not limited thereto, and the light absorbing layer LAM may include a colorant having a color so as to be able to absorb light having a wavelength range that is not absorbed by the base layer BS-F among the external light that passes through the base layer BS-F and is provided to the lower side of the display module DM.

[0101] In one or more embodiments, the light absorbing layer LAM may display a color complementary to the color displayed by the base layer BS-F. Therefore, the display device ED of one or more embodiments including a stacked structure of the base layer BS-F and the light absorbing layer LAM displaying a color complementary to the base layer BS-F may absorb most of the light in the visible light range provided to the lower side of the display element layer D-EL.

[0102] The display device ED of one or more embodiments includes a stacked structure of a base layer BS-F having a maximum transmittance in a wavelength range of about 500 nm to about 850 nm and a light absorption layer LAM having a maximum transmittance in a wavelength range of about 240 nm to about 550 nm, and thus can effectively or appropriately absorb external light incident from outside the display device ED. For example, the display device ED of one or more embodiments includes a stacked structure of a base layer BS-F having a maximum transmittance in a wavelength range of about 550 nm to about 800 nm and a light absorption layer LAM having a maximum transmittance in a wavelength range of about 300 nm to about 500 nm, and thus can effectively or appropriately absorb external light incident from outside the display device ED. For example, in the display device ED of one or more embodiments, when external light passes through the display element layer D-EL and is incident on the base layer BS-F, first light having a wavelength range of approximately 300 nm to approximately 500 nm is absorbed by the base layer BS-F, and second light having a wavelength range of approximately 550 nm to approximately 800 nm among the light that passes through the base layer BS-F and is provided to the light absorption layer LAM is absorbed by the light absorption layer LAM. Therefore, the display device ED can effectively or appropriately absorb external light incident from the outside.

[0103] In one or more embodiments, the light absorbing layer LAM may be directly below the base layer BS-F. The light absorbing layer LAM may be directly on the base layer BS-F without an additional adhesive member. The light absorbing layer LAM may be formed by coating and disposed below the display module DM. The light absorbing layer LAM may be disposed below the display module DM in a state of uncured light absorbing resin and then formed by photocuring the coated light absorbing resin.

[0104] In one or more embodiments, the light absorbing layer LAM and the light absorbing resin from which the light absorbing layer LAM is formed may both have a maximum transmittance in a wavelength range of about 240 nm to about 550 nm. In one or more embodiments, the light absorbing resin may have a maximum transmittance in a wavelength range of about 300 nm to about 500 nm. For example, the light absorbing layer LAM and the light absorbing resin provided to form the light absorbing layer LAM may transmit ultraviolet light. Because the light absorbing resin is not configured to absorb ultraviolet light and is configured to transmit ultraviolet light, etc., even when the light absorbing resin is set to a suitable or sufficient thickness by coating, a light absorbing layer LAM with a high degree of cure can be formed without being cured. Therefore, a display device ED including a properly or sufficiently cured light absorbing layer LAM may exhibit excellent or suitable reliability. For example, this is a more improved feature compared to a case where the light absorbing layer including a black component is not cured, because the light used to cure the light absorbing resin is also absorbed by the black component.

[0105] In one or more embodiments, in a display device ED, the light absorbing layer LAM can be configured to transmit light having a set or specific wavelength range, so that even after the light absorbing layer LAM is formed below the display module DM, it is possible to determine whether the display module DM is defective from the bottom side of the light absorbing layer LAM. In a display device including a light absorbing layer containing a black component, the light absorbing layer has low transmittance across the entire visible light wavelength range due to the black component, and therefore there is a limitation in determining whether the display module is defective from the bottom side of the light absorbing layer after the display device is manufactured. However, the light absorbing layer LAM included in the display device ED of one or more embodiments has a higher transmittance within the set or specific wavelength range than a comparable light absorbing layer including a black component, and therefore, it is easier to visually identify whether the display module DM is defective by providing light having a set or specific wavelength from the bottom side of the light absorbing layer LAM. Therefore, it is easier to visually identify and determine whether the display module DM is defective during the manufacture of the display device ED, thereby improving reworkability.

[0106] In one or more embodiments, the light absorbing layer LAM may be an optical member below the display module DM and may be configured to absorb light incident through the display module DM and may also serve as a supporting member for supporting the display module DM. The light absorbing layer LAM may have a thickness within a wavelength range of about 300 μm or greater. The light absorbing layer LAM has high transmittance within a set or specific wavelength range and may therefore be set to have a suitable or sufficient thickness without being cured. Therefore, the light absorbing layer LAM according to one or more embodiments may have high absorbance due to a suitable or sufficient thickness, support the display module DM from the lower side of the display module DM, and protect the display module DM, thereby exhibiting excellent or suitable display quality, improved reliability, and excellent or suitable durability.

[0107] For example, the display device ED of one or more embodiments includes a base layer BS-F and a light absorbing layer LAM below the base layer BS-F. Therefore, external light is appropriately or sufficiently absorbed by the stacked structure of the base layer BS-F and the light absorbing layer LAM, and the display device ED can exhibit good or suitable reflection reduction properties. In addition, in the display device ED of one or more embodiments, the light absorbing layer LAM has a characteristic of transmitting light having a set or specific wavelength range and can therefore be formed to have a relatively high degree of curing. Therefore, because degassing caused by the uncured light absorbing layer LAM and degradation of the durability of the light absorbing layer LAM are reduced, the display device ED can exhibit excellent or suitable reliability.

[0108] Figure 6 The steps of absorbing and transmitting external light in the display device of one or more embodiments are shown. Figure 6 In one or more embodiments, the first external light L incident from the outside of the display device ED O The second external light L emitted through the base layer BS-F may pass through the display element layer D-EL to be provided to the base layer BS-F. BS can be provided to the light absorbing layer LAM, transmit the light absorbing layer LAM, and finally, can be changed into the third external light L LA .

[0109] first external light L O The light with a set or specific wavelength range can be absorbed by the base layer BS-F. For example, in one or more embodiments, the base layer BS-F can absorb the first external light L O The light having a short wavelength range of about 300 nm to about 500 nm is transmitted, the light having a long wavelength range of about 550 nm to about 800 nm is transmitted, and the transmitted light is then used as the second external light L BSThe second external light L provided to the light absorbing layer LAM. BS The light having a long wavelength range of about 550 nm to about 800 nm may be additionally absorbed by the light absorbing layer LAM. O The light that is not absorbed by the base layer BS-F and the light absorbing layer LAM can be used as the third external light L LA Passing through the light absorbing layer LAM.

[0110] In one or more embodiments, the third external light L LA corresponds to the minimum external light that is not absorbed by the base layer BS-F and the light absorbing layer LAM, and the first external light L O The light can be absorbed with favorable absorbance over the entire visible light wavelength range while passing through the stacked structure of the base layer BS-F and the light absorbing layer LAM. Therefore, the display device ED of one or more embodiments can advantageously absorb external light to reduce reflection of the external light, thereby exhibiting excellent or suitable display quality.

[0111] Figure 7 is a cross-sectional view of a display device according to one or more embodiments. Figure 7 The display device ED-1 of some aspects shown in the reference Figures 1 to 6 The display device ED of one or more described embodiments differs only in the configuration of the light absorbing layer LAM-1.

[0112] In the display device ED-1 of one or more embodiments, the light absorbing layer LAM-1 may include a plurality of sub-light absorbing layers. The light absorbing layer LAM-1 may include a first sub-light absorbing layer LAL-1 and a second sub-light absorbing layer LAL-2 between the base layer BS-F and the first sub-light absorbing layer LAL-1. In one or more embodiments, Figure 7 Although only the case where the light absorbing layer LAM-1 includes two sub-light absorbing layers is shown, one or more embodiments of the present disclosure are not limited thereto. The light absorbing layer LAM-1 may include three or more sub-light absorbing layers. The multiple sub-light absorbing layers may each have a maximum transmittance within a different wavelength range. In one or more embodiments, at least two of the multiple sub-light absorbing layers may each have a maximum transmittance within the same wavelength range.

[0113] In the following, reference will be made to Figure 7 and Figure 8 The display device of one or more embodiments is described in more detail in FIG. Figure 7 and Figure 8 The description of the display device of one or more embodiments described in more detail will not be explained again with reference to Figures 1 to 6The contents described are duplicated, and the following description will mainly focus on the differences.

[0114] exist Figure 7 In one or more embodiments shown in , the first sub-light absorbing layer LAL-1 and the second sub-light absorbing layer LAL-2 may exhibit maximum transmittance within different wavelength ranges. In one or more embodiments, the second sub-light absorbing layer LAL-2 may have a maximum transmittance within a relatively longer wavelength range than the first sub-light absorbing layer LAL-1. In one or more embodiments, for example, the first sub-light absorbing layer LAL-1 may have a maximum transmittance within a wavelength range of approximately 300 nm to approximately 500 nm, and the second sub-light absorbing layer LAL-2 may have a maximum transmittance within a wavelength range of approximately 500 nm to approximately 600 nm.

[0115] In one or more embodiments, the first sub-light absorbing layer LAL-1 and the second sub-light absorbing layer LAL-2 may be identified as different colors from each other. For example, the first sub-light absorbing layer LAL-1 and the second sub-light absorbing layer LAL-2 may have different colors from each other. For example, the first sub-light absorbing layer LAL-1 may be identified as blue, and the second sub-light absorbing layer LAL-2 may be identified as green. For example, the first sub-light absorbing layer LAL-1 may have a blue color, and the second sub-light absorbing layer LAL-2 may have a green color. In one or more embodiments, the first sub-light absorbing layer LAL-1 may include a blue colorant, and the second sub-light absorbing layer LAL-2 may include a green colorant. However, one or more embodiments of the present disclosure are not limited thereto. In one or more embodiments, if the wavelength range in which light is maximally absorbed by the light absorption layer LAM including the first sub-light absorption layer LAL-1 and the second sub-light absorption layer LAL-2 does not overlap with the wavelength range in which light is maximally absorbed by the base layer BS-F and is complementary to each other, the construction of each layer in the first sub-light absorption layer LAL-1 and the second sub-light absorption layer LAL-2 may be different from the construction shown above.

[0116] In one or more embodiments, the first light absorbing layer LAL-1 and the second light absorbing layer LAL-2 may exhibit absorbances within different wavelength ranges. For example, the first light absorbing layer LAL-1 may have a maximum absorbance within a wavelength range of approximately 600 nm or greater, and the second light absorbing layer LAL-2 may have a maximum absorbance within a wavelength range of approximately 300 nm to approximately 400 nm. In one or more embodiments, the base layer BS-F may have a maximum absorbance within a wavelength range of approximately 300 nm to approximately 600 nm.

[0117] The display device ED-1 of one or more embodiments includes a base layer BS-F and a light absorbing layer LAM-1, wherein the light absorbing layer LAM-1 includes a second sub-light absorbing layer LAL-2 and a first sub-light absorbing layer LAL-1 having maximum transmittance in wavelength ranges different from each other and sequentially arranged below the base layer BS-F. Therefore, external light provided from outside the display device ED-1 is effectively or properly absorbed, and the display device ED-1 can exhibit characteristics that prevent or reduce reflected light from being viewed. For example, the display device ED-1 of one or more embodiments can have a stacked structure of the base layer BS-F and the light absorbing layer LAM-1, and the light absorbing layer LAM-1 is configured to absorb light having a wavelength range different from the wavelength range of the base layer BS-F. Therefore, external light is effectively or properly absorbed, and the display device ED-1 can exhibit excellent or suitable display quality. In one or more embodiments, because the sub-light absorbing layers LAL-1 and LAL-2 of the light absorbing layer LAM-1 each have a light transmittance of approximately 20% or greater within a set or specific wavelength range, the sub-light absorbing layers LAL-1 and LAL-2 can be formed using light having a wavelength range in which the light transmittance is approximately 20% or greater. Therefore, the sub-light absorbing layers LAL-1 and LAL-2 have a relatively high degree of curing, and thus the display device ED-1 can exhibit excellent or suitable reliability.

[0118] Figure 8 1 is a cross-sectional view of a display device according to one or more embodiments. In the display device ED-2 according to one or more embodiments, the base layer BS-G may include a glass substrate. In one or more embodiments, the base layer BS-G may include a transparent glass substrate. For example, the base layer BS-G may include a transparent glass substrate having a light transmittance of approximately 80% or greater within a wavelength range of approximately 300 nm to approximately 800 nm.

[0119] Reference Figure 8 , the light absorbing layer LAM-2 may be directly below the base layer BS-G. In one or more embodiments, the light absorbing layer LAM-2 may include a first sub-light absorbing layer LAL-S1 having a maximum transmittance in a wavelength range of about 300 nm to about 450 nm, a second sub-light absorbing layer LAL-S2 having a maximum transmittance in a wavelength range of about 500 nm to about 600 nm between the first sub-light absorbing layer LAL-S1 and the base layer BS-G, and a third sub-light absorbing layer LAL-S3 having a maximum transmittance in a wavelength range of about 650 nm to about 800 nm between the second sub-light absorbing layer LAL-S2 and the base layer BS-G.

[0120] In one or more embodiments, the third sub-light absorbing layer LAL-S3 may be directly below the base layer BS-G. Furthermore, in one or more embodiments, the second sub-light absorbing layer LAL-S2 may be directly below the third sub-light absorbing layer LAL-S3, and the first sub-light absorbing layer LAL-S1 may be directly below the second sub-light absorbing layer LAL-S2. The third sub-light absorbing layer LAL-S3, the second sub-light absorbing layer LAL-S2, and the first sub-light absorbing layer LAL-S1 may be formed sequentially below the base layer BS-G of the display module DM. For example, the first sub-light absorbing layer LAL-S1, the second sub-light absorbing layer LAL-S2, and the third sub-light absorbing layer LAL-S3 may be stacked sequentially in the third direction DR3.

[0121] In the display device ED-2 of one or more embodiments, external light provided by the display module DM can be effectively or appropriately absorbed by the light absorption layer LAM-2, which includes a plurality of sub-light absorption layers LAL-S1, LAL-S2, and LAL-S3. For example, the third sub-light absorption layer LAL-S3 can be configured to absorb light within a wavelength range of about 300 nm to about 600 nm with an absorbance of about 80% or more, the second sub-light absorption layer LAL-S2 can be configured to absorb light within a wavelength range of about 300 nm to about 450 nm and about 650 nm to about 800 nm with an absorbance of about 80% or more, and the first sub-light absorption layer LAL-S1 can be configured to absorb light within a wavelength range of about 500 nm to about 800 nm with an absorbance of about 80% or more. Therefore, even if the base layer BS-G has a high transmittance, external light provided to the display device ED-2 can be effectively or appropriately absorbed by the light absorption layer LAM-2. Therefore, the display device ED-2 according to one or more embodiments can reduce external light reflection, thereby exhibiting excellent or appropriate display quality.

[0122] Figure 9 Shown according to Figure 8FIG2 shows the relationship between the transmittance properties of some aspects shown in FIG2 and the wavelength of the sub-light absorption layers included in the light absorption layer LAM-2. The first to third sub-light absorption layers LAL-S1, LAL-S2, and LAL-S3 exhibit maximum transmittance in different wavelength ranges from each other. For example, in one or more embodiments, the first sub-light absorption layer LAL-S1 may exhibit maximum transmittance in a wavelength range shorter than that of the second sub-light absorption layer LAL-S2, and the third sub-light absorption layer LAL-S3 may exhibit maximum transmittance in a wavelength range longer than that of the second sub-light absorption layer LAL-S2. The first to third sub-light absorption layers LAL-S1, LAL-S2, and LAL-S3 have differences in maximum transmittance-wavelength characteristics so as to complement each other. Therefore, the first to third sub-light absorption layers LAL-S1, LAL-S2, and LAL-S3 can complement each other to absorb light in different wavelength ranges, and thus effectively or appropriately absorb light. Therefore, the display device ED-2 including the first to third sub-light absorbing layers LAL-S1, LAL-S2, and LAL-S3 may exhibit excellent or appropriate external light absorption properties.

[0123] In one or more embodiments, Figure 8 and Figure 9 The light absorbing layer LAM-2 is shown to include three sub-light absorbing layers, but one or more embodiments of the present disclosure are not limited thereto. In one or more embodiments, in the case of a display device ED-2 including a glass substrate in which the base layer BS-G has high transmittance throughout the visible light range, the light absorbing layer LAM-2 may have a stacked structure of two sub-light absorbing layers or a stacked structure of four or more sub-light absorbing layers, as long as the structure can effectively or appropriately absorb light in the visible light range.

[0124] In the display device ED-2 of one or more embodiments, the first to third sub-light absorbing layers LAL-S1, LAL-S2, and LAL-S3 have a property of having a light transmittance higher than a set or predetermined light transmittance at a set or specific wavelength, compared to a comparable light absorbing layer including a black component. Therefore, they can be effectively or appropriately cured using ultraviolet light and / or infrared light, etc., minimizing or reducing uncured light. Therefore, the display device ED-2 of one or more embodiments can exhibit excellent or suitable reliability.

[0125] In the following, 10A to 11D is a diagram showing some steps of a method for manufacturing a display device according to one or more embodiments. 10A to 11D In the description of the method for manufacturing a display device of one or more embodiments described in more detail, no further explanation or reference will be made. Figures 1 to 9The contents of the display apparatus of one or more embodiments described in more detail overlap, and the following description will mainly focus on the differences.

[0126] 10A to 10C Some steps of a method for manufacturing a display device according to one or more embodiments are shown. 10A to 10C It can be shown that the Figure 4 Some aspects of the steps of the display device ED are shown in FIG.

[0127] Figure 10A The step of providing a light-absorbing resin for producing a light-absorbing layer is shown. Figure 10B The curing step of making the light absorbing layer is shown, and Figure 10C The stacked structure of a portion of a display device is shown after the curing step.

[0128] Reference Figure 10A , a light absorbing resin R-LA may be provided to the lower surface DM-BS of the display module DM. The light absorbing resin R-LA may include an uncured matrix resin, a colorant, and a light curing agent. The light absorbing resin R-LA may be applied to the lower surface DM-BS of the display module DM. In one or more embodiments, the base layer BS-F (see FIG. 2 ) may be directly coated with the light absorbing resin R-LA. Figure 4 ) is provided below the light absorbing resin R-LA.

[0129] Figure 10B The curing step of making the light absorbing layer is shown, and Figure 10C The stacked structure of a portion of a display device manufactured after the curing step is shown. A light source CL for curing can be provided to a preliminary light absorbing layer P-LA, which has been set to a set or predetermined thickness by coating with a light absorbing resin R-LA. For example, the light source CL can be ultraviolet light. However, one or more embodiments of the present disclosure are not limited thereto. The light absorbing resin R-LA can have a maximum transmittance within a wavelength range of approximately 240 nm to approximately 550 nm. Therefore, ultraviolet light can be provided throughout the light absorbing resin R-LA and the preliminary light absorbing layer P-LA formed by coating with the light absorbing resin R-LA. For example, in one or more embodiments, the light source CL is provided up to a region of the preliminary light absorbing layer P-LA adjacent to the lower surface DM-BS of the display module DM, thereby allowing the preliminary light absorbing layer P-LA to be fully or properly cured. Therefore, the light absorbing layer can be provided uncured, and the display device of one or more embodiments can exhibit improved reliability.

[0130] The preliminary light absorbing layer P-LA is cured to form a light absorbing layer LAM. The light absorbing layer LAM may have a maximum transmittance within a wavelength range of about 300 nm to about 500 nm and a maximum absorbance within a wavelength range of about 550 nm to about 800 nm.

[0131] 11A to 11D Some steps of a method for manufacturing a display device according to one or more embodiments are shown. 11A to 11D In one or more embodiments of the display device manufactured by some steps of the method for manufacturing a display device shown in FIG, the light absorbing layer may include multiple sub-light absorbing layers. For example, 11A to 11D Can be shown for manufacturing reference Figure 7 A method of displaying the device ED-1 according to one or more embodiments will be described in more detail.

[0132] Can be achieved through 11A to 11D The display device ED-1 including the plurality of sub-light absorbing layers LAL-1 and LAL-2 is manufactured by the steps of: sequentially coating and curing the light absorbing resin on the lower surface DM-BS of the display module DM, and the light absorbing layer LAM-1 including the plurality of sub-light absorbing layers LAL-1 and LAL-2 can be manufactured.

[0133] Figure 11A It shows a step of providing light from the first light source CL-1 to a second preliminary sub-layer P-LA2 provided for manufacturing a second light absorbing sub-layer LAL-2 to the bottom surface DM-BS of the display module DM. Figure 11B The step of providing the first light absorbing resin R-LA1 to manufacture the first light absorbing sub-layer LAL-1 after forming the second light absorbing sub-layer LAL-2 is shown. Figure 11C There is shown a step of providing light of the second light source CL-2 to the first preliminary sub-layer P-LA1. Figure 11D Shown including through Figures 11A to 11C The steps of manufacturing the stacked structure of the light absorbing layer LAM-1 of the display device.

[0134] The second preliminary sub-layer P-LA2 may have a maximum transmittance within a wavelength range of about 500 nm to about 600 nm, and the first preliminary sub-layer P-LA1 may have a maximum transmittance within a wavelength range of about 300 nm to about 500 nm. However, one or more embodiments of the present disclosure are not limited thereto. The first preliminary sub-layer P-LA1 and the second preliminary sub-layer P-LA2 may have a maximum transmittance within the same wavelength range, or may exhibit a light-transmitting property capable of absorbing light within a wavelength range different from the above-mentioned wavelength range but in a complementary manner.

[0135] The first light source CL-1 and the second light source CL-2 used to cure the second preliminary sub-layer P-LA2 and the first preliminary sub-layer P-LA1 can be light sources for curing with light within different wavelength ranges. For example, the light from the first light source CL-1 can be infrared light, and the light from the second light source CL-2 can be ultraviolet light. However, one or more embodiments of the present disclosure are not limited thereto. For example, in one or more embodiments, the light from each of the first light source CL-1 and the second light source CL-2 can be ultraviolet light.

[0136] As reference Figures 11A to 11C Described in more detail, to manufacture a light absorbing layer comprising a plurality of sub-light absorbing layers, the coating and curing of the light absorbing resin can be repeatedly performed in a sequence adjacent to the lower surface of the display module. In one or more embodiments, the light absorbing resin forming the sub-light absorbing layer has a light transmittance of about 20% or more within a set or specific wavelength range compared to a comparable light absorbing resin comprising a black component, and thus can be fully or properly cured using light having a set or specific wavelength range. Therefore, the plurality of sub-light absorbing layers can also be provided without being cured, and thus the display device of one or more embodiments can exhibit improved reliability.

[0137] In one or more embodiments, the light absorbing layer LAM-1 formed by stacking a plurality of sub-light absorbing layers can have a maximum transmittance within a wavelength range of about 300 nm to about 600 nm, and can have a maximum absorbance within a wavelength range of about 600 nm to about 800 nm. Therefore, the display device ED-1 including the light absorbing layer LAM-1 according to one or more embodiments can effectively or appropriately absorb external light, thereby exhibiting excellent or suitable display quality.

[0138] The display device of one or more embodiments includes a light absorbing layer below the display module that has a maximum light transmittance within a set or specific wavelength range and is configured to absorb light within the set or specific wavelength range. Thus, the display device can exhibit excellent or appropriate display quality by effectively or appropriately absorbing a portion of the external light provided to the display device and preventing or reducing the reflected light from being viewed from the outside. The display device of one or more embodiments may include a light absorbing layer that has a maximum light transmittance within a set or specific wavelength range. Therefore, because the light absorbing layer is fully or appropriately cured by light within the set or specific wavelength range, it can exhibit excellent or appropriate reliability.

[0139] Furthermore, the display device of one or more embodiments includes a base layer included in the display module and configured to absorb a first light, and a light absorbing layer configured to absorb a second light different from the first light in a manner complementary to the base layer. Thus, external light can be effectively or appropriately absorbed by the stacked structure of the base layer and the light absorbing layer. Consequently, external light provided from outside the display device is complementarily absorbed while passing through the stacked structure of the base layer and the light absorbing layer. Consequently, reflection of external light is reduced, and the display device of one or more embodiments can exhibit excellent or suitable display quality.

[0140] The display device according to one or more embodiments may include a light absorbing layer below the base layer and having a maximum transmittance within a wavelength range of about 550 nm or less, and therefore, because the light absorbing layer is cured by a photocuring method so as to have a relatively high degree of curing, it can exhibit excellent or suitable reliability.

[0141] The display device according to one or more embodiments may reduce reflection of external light because the light absorbing layer configured to absorb light having a set or specific wavelength range is under the base layer.

[0142] An electronic device according to one or more embodiments of the present disclosure includes the aforementioned display device as described herein. In one or more embodiments, the electronic device may be a smartphone, a high-resolution smartphone, a smart tablet, a vehicle navigation system, a computer, a television, a computer monitor, a tablet computer, an electric vehicle, a mobile phone, a tablet personal computer (PC), a mobile communication terminal, an electronic notebook, an electronic book, a portable multimedia player (PMP), a navigation device, an ultra-mobile PC (UMPC), a laptop computer, a billboard, an Internet of Things (IoT) device, a smartwatch, a watch phone, or a head-mounted display (HMD).

[0143] Although the embodiments of the present disclosure have been described, it is understood that the present disclosure should not be limited to these embodiments, but one or more suitable changes and modifications may be made by one of ordinary skill in the art within the spirit and scope of the present disclosure as claimed.

[0144] Therefore, the technical scope of the present disclosure is not limited to the contents described in the detailed description of the specification, but should be determined by the appended claims and their equivalents.

Claims

1. A display device, comprising: base layer; a display element layer on the base layer; as well as The light absorbing layer is below the base layer and has a maximum light transmittance within a wavelength range of 240 nm to 550 nm.

2. The display device according to claim 1, wherein The base layer includes a flexible polyimide film.

3. The display device according to claim 2, wherein: The base layer has a maximum light transmittance within a wavelength range of 500 nm to 850 nm.

4. The display device according to claim 3, wherein The light absorbing layer comprises: a first sub-light absorbing layer having a maximum light transmittance within a first wavelength range; and The second sub-light absorption layer is between the first sub-light absorption layer and the base layer and has a maximum light transmittance in a second wavelength range having a longer wavelength than the first wavelength range.

5. The display device according to claim 1, wherein The base layer includes a transparent glass substrate having a light transmittance of 80% or more within a wavelength range of 300 nm to 800 nm. The display device according to claim 5 , wherein: The light absorbing layer comprises: The first sub-light absorbing layer has a maximum light transmittance within a wavelength range of 300 nm to 450 nm; a second sub-light absorbing layer, between the first sub-light absorbing layer and the base layer, and having a maximum light transmittance within a wavelength range of 500 nm to 600 nm; and The third sub-light absorbing layer is between the second sub-light absorbing layer and the base layer, and has a maximum light transmittance within a wavelength range of 650 nm to 800 nm.

7. The display device according to claim 1, wherein The light absorbing layer includes a base resin and at least one of a blue colorant and a green colorant.

8. The display device according to claim 1, wherein The light absorbing layer is directly below the base layer.

9. A display device, comprising: a substrate layer having a maximum light transmittance within a first wavelength range; a display element layer on the base layer and including a light-emitting element; as well as A light absorbing layer is provided below the base layer and has a maximum light transmittance in a second wavelength range having a shorter wavelength than the first wavelength range.

10. The display device according to claim 9, wherein The base layer is a polyimide film having a maximum light transmittance within a wavelength range of 500 nm to 850 nm.

11. The display device according to claim 10, wherein: The light absorbing layer includes a first sub-light absorbing layer having a maximum transmittance within a wavelength range of 300 nm to 450 nm.

12. The display device according to claim 11, wherein The light absorbing layer further includes a second sub-light absorbing layer between the first sub-light absorbing layer and the base layer and having a maximum light transmittance within a wavelength range of 500 nm to 600 nm.

13. The display device according to claim 12, wherein: The second sub-light absorbing layer is directly below the base layer, and The first sub-light absorbing layer is directly below the second sub-light absorbing layer.

14. The display device according to claim 9, wherein The light absorbing layer is directly below the base layer. 15 . The display device according to claim 9 , further comprising an optical layer on the display element layer and including a polarizing layer.

16. A display device, comprising: A display element layer including a light emitting element; a base layer below the display element layer and having an absorbance of the first light of 80% or greater; as well as A light absorbing layer is directly below the base layer and has an absorbance of 80% or more of second light having a longer wavelength than the first light.

17. The display device according to claim 16, wherein: The first light has a wavelength in the range of 240 nm to 550 nm, and The second light has a wavelength within a range of 500 nm to 850 nm.

18. The display device according to claim 16, wherein: The light absorbing layer is configured to transmit ultraviolet light.

19. The display device according to claim 16, wherein: The light absorbing layer includes a plurality of sub-light absorbing layers, and The sub-light absorbing layer includes: a first sub-light absorbing layer below the base layer and configured to transmit ultraviolet light; and a second sub-light absorbing layer between the first sub-light absorbing layer and the base layer and configured to absorb the ultraviolet light and transmit infrared light.

20. The display device according to claim 16, wherein The base layer is a polyimide film, and The light absorbing layer includes at least one of a blue colorant and a green colorant.

21. An electronic device, comprising: A display device includes: a base layer; a display element layer on the base layer; and a light absorption layer below the base layer and having a maximum light transmittance within a wavelength range of 240 nm to 550 nm.

22. The electronic device according to claim 21, wherein The electronic device is a smart phone, a high-resolution smart phone, a mobile phone, a smart tablet, a smart watch, a tablet personal computer, an electric vehicle, a vehicle navigation system, a television, a computer monitor, a laptop computer, a mobile communication terminal, an electronic notebook, a portable multimedia player, an ultra-mobile personal computer, a computer, a billboard, an Internet of Things device, a watch phone, a head-mounted display, or a combination thereof.

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