Display device

Abstract

A display device is provided. The display device includes: a first substrate; a light-emitting element disposed on the first substrate; a packaging film covering the light-emitting element; a second substrate facing the first substrate; a first outermost film disposed on the second substrate to face the packaging film and including AO X N Y (wherein A is a metal element or a non-metal element, and X > Y); and a filling material disposed between the packaging film and the first outermost film and placed in direct contact with the first outermost film.

Description

[0001] This application claims priority to and the benefit of Korean Patent Application No. 10-2018-0138699 filed in the Korean Intellectual Property Office on November 13, 2018, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0002] The present disclosure relates to a display device and a method of manufacturing the display device. Background Art

[0003] With the development of multimedia, display devices have become increasingly important. Therefore, various suitable display devices have been developed, such as liquid crystal display devices (LCD) and / or organic light emitting diode (OLED) display devices.

[0004] The OLED display device includes an OLED as a self-luminous element. The OLED includes two electrodes facing each other and an organic light-emitting layer disposed between the two electrodes. Electrons and holes from the two electrodes may be recombined in the organic light-emitting layer to generate excitons, and in response to the transition of the excitons from an excited state to a ground state, light may be emitted.

[0005] Since OLED display devices do not require a separate light source, they have become the focus of next-generation display devices due to their numerous improvements, such as low power consumption, thinness (e.g., low thickness), lightness (e.g., light weight), wide viewing angle, high brightness and contrast, and fast response speed.

[0006] The OLED display device may include a display substrate on which an OLED is disposed and a light conversion substrate on which a light conversion member is disposed. The OLED display device may further include: a sealing member for combining the display substrate and the light conversion substrate; and a filling material disposed between the display substrate and the light conversion substrate to fill a space formed by the sealing member, the display substrate, and the light conversion substrate.

[0007] When the filling material has weak wettability (eg, poor wettability) with respect to the light conversion substrate and the display substrate disposed on the top and bottom surfaces thereof, respectively, display defects may occur because the light conversion substrate and / or the display substrate are not properly filled with the filling material. Summary of the invention

[0008] An aspect according to one or more embodiments of the present disclosure is directed to a display device in which a lyophilic inorganic layer having high surface tension is placed in contact with a filling material to improve dispersion characteristics and wetting characteristics.

[0009] Another aspect according to one or more embodiments of the present disclosure is directed to a method of manufacturing a display device in which a lyophilic inorganic layer having high surface tension is placed in contact with a filling material to improve dispersion characteristics and wetting characteristics.

[0010] However, aspects of the present disclosure are not limited to those set forth herein. The above and other aspects of the present disclosure will become more apparent to those of ordinary skill in the art to which the present disclosure pertains by referring to the detailed description of the present disclosure given below.

[0011] According to an embodiment of the present disclosure, a display device includes: a first substrate; a plurality of light-emitting elements located on the first substrate; a packaging film covering the plurality of light-emitting elements; a second substrate facing the first substrate; a first outermost film located on the second substrate, facing the packaging film, and including an AO X N Y , wherein A is a metal element or a non-metal element, and X>Y; and a filling material located between the packaging film and the first outermost film and in direct contact with the first outermost film.

[0012] In exemplary embodiments, a first surface tension of the first outermost film may be greater than a second surface tension of the filling material.

[0013] In an exemplary embodiment, the first surface tension of the first outermost film may be about 60 mN / m or more.

[0014] In an exemplary embodiment, the polar component of the first surface tension may be about 35 mN / m or greater.

[0015] In exemplary embodiments, a difference in refractive index between the first outermost film and the filling material may be less than or equal to about 0.2.

[0016] In an exemplary embodiment, the first outermost film may have about to about thickness and a transmittance of about 80% or more.

[0017] In exemplary embodiments, the metal element or non-metal element A may include silicon (Si) or aluminum (Al).

[0018] In an exemplary embodiment, the filling material may include one selected from among a silicon-based organic material, an epoxy-based organic material, and an acrylic organic material.

[0019] In an exemplary embodiment, the display device may further include a sealant located between the first substrate and the second substrate when viewed in a plan view and surrounding the filling material, wherein the filling material is located in a space surrounded by the encapsulation film, the first outermost film, and the sealant.

[0020] In exemplary embodiments, the sealant may be in contact with the filling material, and may be in direct contact with a surface of the first substrate and a surface of the second substrate to bond the surfaces of the first substrate and the second substrate together.

[0021] In an exemplary embodiment, each of the plurality of light emitting elements may include: an anode electrode; a cathode electrode facing the anode electrode; and an organic layer between the anode electrode and the cathode electrode and configured to emit blue light.

[0022] In an exemplary embodiment, the display device may further include: a plurality of light conversion patterns between the second substrate and the first outermost film.

[0023] In an exemplary embodiment, the plurality of light emitting elements may be configured to emit blue light, and the plurality of light conversion patterns may include: a first wavelength conversion pattern configured to convert the blue light into red light; a second wavelength conversion pattern configured to convert the blue light into green light; and a light-transmitting pattern configured to transmit the blue light therethrough.

[0024] In an exemplary embodiment, the first outermost film may form a convex portion in a region where the plurality of light conversion patterns are disposed, and form a concave portion in a region where the plurality of light conversion patterns are not disposed.

[0025] In an exemplary embodiment, a filling material may fill the recess of the first outermost film.

[0026] In an exemplary embodiment, the display device may further include a light shielding cover, wherein the light shielding cover is disposed to overlap the concave portion of the first outermost film in a thickness direction.

[0027] In an exemplary embodiment, the display device may further include: a second outermost film, which is located on the first substrate, directly contacts the filling material, and includes BO P N Q , wherein B is a metal element or a non-metal element, and P>Q, wherein the metal element or non-metal element B includes silicon or aluminum.

[0028] In an exemplary embodiment, the third surface tension of the second outermost film may be greater than the second surface tension of the filling material, the third surface tension may be about 60 mN / m or greater, and the polar component of the third surface tension may be about 35 mN / m or greater.

[0029] According to an embodiment of the present disclosure, the display device includes: a first substrate; a plurality of light-emitting elements located on the first substrate; a packaging film covering the plurality of light-emitting elements; an outermost film located on the packaging film and including an AO X N Y, wherein A is a metal element or a non-metal element, and X>Y; a second substrate facing the first substrate; and a filling material located between the outermost film and the second substrate and in direct contact with the outermost film.

[0030] In an exemplary embodiment, a first surface tension of the outermost film may be greater than a second surface tension of the filling material, and the first surface tension may be about 60 mN / m or more.

[0031] In an exemplary embodiment, the polar component of the first surface tension may be about 35 mN / m or greater.

[0032] In an exemplary embodiment, a difference in refractive index between the outermost film and the filling material may be less than or equal to about 0.2.

[0033] In an exemplary embodiment, the outermost film may have about to about thickness and a transmittance of about 80% or more.

[0034] In exemplary embodiments, the metal element or non-metal element A may include silicon or aluminum.

[0035] According to the foregoing and other embodiments of the present disclosure, since a lyophilic inorganic layer having high surface tension is placed in contact with a filling material, a display device having improved dispersion characteristics and wetting characteristics may be provided.

[0036] Other features and embodiments may be apparent from the detailed description, drawings, claims, and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The above and other aspects and features of the present disclosure will become more apparent by describing embodiments of the present disclosure in more detail with reference to the accompanying drawings, in which:

[0038] Figure 1 is a perspective view of a display device according to an embodiment of the present disclosure;

[0039] Figure 2 It is along Figure 1 A cross-sectional view taken along line II-II';

[0040] Figure 3 yes Figure 1 and Figure 2 A plan view of a display device;

[0041] Figure 4 It is along Figure 3 A cross-sectional view taken along line IV-IV';

[0042] Figure 5 It is along Figure 3 A cross-sectional view taken along line V-V';

[0043] Fig. 6A It is shown Figure 4 an enlarged cross-sectional view of a portion Q1;

[0044] Figure 6B and Figure 6C It is shown Figure 4 An enlarged cross-sectional view of a modified example of part Q1;

[0045] Figure 7 is based on Figure 1 A cross-sectional view of a modified example of the display device of the embodiment;

[0046] Figure 8 It is shown Figure 4 an enlarged cross-sectional view of region A;

[0047] Fig. 9 It is shown Figure 8 An enlarged cross-sectional view of a sixth covering layer and a filling material;

[0048] Fig.10 is a cross-sectional view of a display device according to another embodiment of the present disclosure;

[0049] Figures 11 to 19 is a cross-sectional view of a display device according to another embodiment of the present disclosure;

[0050] Fig. 20 It is shown Fig.19 A cross-sectional view of region B;

[0051] Figure 21 to Figure 24 is a cross-sectional view of a display device according to another embodiment of the present disclosure;

[0052] Fig.25 is a flowchart illustrating a method of manufacturing a display device according to an embodiment of the present disclosure;

[0053] Fig.26 It shows that according to Fig.25 A perspective view of the formation of a sealing member of an embodiment;

[0054] Fig. 27 It shows that according to Fig.25 A plan view of a first target substrate obtained by forming a sealing member of an embodiment of the present invention;

[0055] Fig.28A and Fig.28B It is along Fig. 27 A sectional view taken along line XXVIII-XXVIII';

[0056] Fig.29 It shows that according to Fig.25A plan view of a target substrate obtained by forming a filling material according to an embodiment of the present invention;

[0057] Fig.30 is a plan view for explaining a method of manufacturing a display device according to another embodiment of the present disclosure;

[0058] Fig.31 It shows that according to Fig.30 How to obtain a perspective view of a first substrate and a second substrate through a first mother substrate and a second mother substrate of an embodiment; and

[0059] Fig.32A and Fig.32B It is along Fig.31 A cross-sectional view taken along line XXXII-XXXII'. DETAILED DESCRIPTION

[0060] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0061] By referring to the embodiments that will be described in more detail with reference to the accompanying drawings, improvements and features of the inventive concept and methods for implementing the same will be apparent. However, the inventive concept is not limited to the embodiments disclosed hereinafter, but may be implemented in various forms. Matters defined in the description (such as detailed construction and elements) are only specific details provided to help those of ordinary skill in the art fully understand the inventive concept, and the inventive concept is limited only within the scope of the appended claims and their equivalents.

[0062] It will be understood that when an element or layer is referred to as being "on," "connected to," or "coupled to" another element or layer, the element or layer may be directly on, directly connected to, or directly coupled to the other element or layer, or there may be intervening elements or layers. Conversely, when an element is referred to as being "directly on," "directly connected to," or "directly coupled to" another element or layer, there are no intervening elements or layers. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0063] Figure 1 is a perspective view of a display device according to an embodiment of the present disclosure, Figure 2 It is along Figure 1 A cross-sectional view taken along line II-II', Figure 3 yes Figure 1 and Figure 2 A plan view of a display device.

[0064] Reference Figures 1 to 3The display device 1 may be applicable to various suitable electronic devices, such as a tablet personal computer (PC), a smart phone, a car navigation unit, a camera, a central information display (CID) provided in a car, a watch-type (e.g., a wristwatch) electronic device, a personal digital assistant (PDA), a portable multimedia player (PMP), a small or medium-sized electronic device (such as a game device), a television (TV), an external billboard, a monitor, a PC and / or a notebook computer, but the present disclosure is not limited thereto. That is, the display device 1 may also be applicable to various suitable electronic devices other than those set forth herein.

[0065] The display device 1 may have a rectangular shape in a plan view. The display device 1 may include a pair of long sides extending in one (e.g., first) direction and a pair of short sides extending in another (e.g., second) direction that crosses or intersects with the (e.g., first) direction along which the long sides extend. For example, in a plan view, the long sides of the display device 1 may extend in a first direction DR1, and the short sides of the display device 1 may extend in a second direction DR2 that crosses or intersects with the first direction DR1. The corners at which the long and short sides of the display device 1 meet may be right angles in a plan view, but the present disclosure is not limited thereto. Optionally, the corners at which the long and short sides of the display device 1 meet may be rounded. The planar shape of the display device 1 is not particularly limited, and the display device 1 may have various suitable shapes other than a rectangular shape, such as a circular, square, or elliptical shape.

[0066] The display device 1 may include a display area DA in which an image is displayed and a non-display area NA in which no image is displayed.

[0067] The display area DA may be disposed at the center of the display device 1. The display area DA may include a plurality of pixels. The pixels may include a first pixel PX1 that emits light of a first color (e.g., red light having a peak wavelength of about 610nm to about 650nm), a second pixel PX2 that emits light of a second color (e.g., green light having a peak wavelength of about 510nm to about 550nm), and a third pixel PX3 that emits light of a third color (e.g., blue light having a peak wavelength of about 430nm to about 470nm). The first pixel PX1, the second pixel PX2, and the third pixel PX3 may be alternately arranged in a row direction and a column direction. The first pixel PX1, the second pixel PX2, and the third pixel PX3 may be arranged in various suitable manners (such as a stripe manner or a PenTile manner).

[0068] Each of the first pixel PX1, the second pixel PX2, and the third pixel PX3 may include a corresponding first light output area PA1, a second light output area PA2, or a third light output area PA3 and a non-light output area PB. The first light output area PA1, the second light output area PA2, and the third light output area PA3 are defined as areas from which light is output through a display surface, and the non-light output area PB is defined as an area from which light is not output through a display surface. The non-light output area PB may be provided to surround the first light output area PA1, the second light output area PA2, and the third light output area PA3. The first light output area PA1, the second light output area PA2, and the third light output area PA3 may be distinguished from the non-light output area PB by a light shielding member (e.g., a light shield), which will be described in more detail later.

[0069] Each of the first pixel PX1, the second pixel PX2, and the third pixel PX3 may include a corresponding first light emitting area LA1, a second light emitting area LA2, or a third light emitting area LA3. The first light emitting area LA1, the second light emitting area LA2, or the third light emitting area LA3 may overlap with the corresponding first light output area PA1, the second light output area PA2, or the third light output area PA3 in the thickness direction. The first light emitting area LA1, the second light emitting area LA2, or the third light emitting area LA3 may correspond to the corresponding first light output area PA1, the second light output area PA2, or the third light output area PA3 in the thickness direction. In a plan view, the size of the first light emitting area LA1, the second light emitting area LA2, or the third light emitting area LA3 may be smaller than the size of the corresponding first light output area PA1, the second light output area PA2, or the third light output area PA3, but the present disclosure is not limited thereto. Optionally, the size of the first light emitting area LA1, the second light emitting area LA2, or the third light emitting area LA3 may be substantially the same as the size of the corresponding first light output area PA1, the second light output area PA2, or the third light output area PA3.

[0070] The first light emitting area LA1, the second light emitting area LA2, and the third light emitting area LA3 may be defined as an area that emits light via an organic layer. A non-light emitting area may be disposed near the first light emitting area LA1, the second light emitting area LA2, and the third light emitting area LA3. The first light emitting area LA1, the second light emitting area LA2, and the third light emitting area LA3 may be distinguished from the non-light emitting area by a dam layer, which will be described in more detail later.

[0071] The wavelength of light emitted from each of the first pixel PX1, the second pixel PX2, and the third pixel PX3 may be controlled not only by the light emitted from the first light emitting area LA1, the second light emitting area LA2, or the third light emitting area LA3, but also by a wavelength conversion layer or a color filter disposed to overlap the first light emitting area LA1, the second light emitting area LA2, or the third light emitting area LA3. For example, the first light emitting area LA1, the second light emitting area LA2, and the third light emitting area LA3 of the first pixel PX1, the second pixel PX2, and the third pixel PX3 may all emit light of the same wavelength (e.g., blue light), and the color of the emitted light may be converted into an output color of the first pixel PX1, the second pixel PX2, and the third pixel PX3 by a wavelength conversion layer and / or a color filter disposed in the first pixel PX1, the second pixel PX2, and the third pixel PX3.

[0072] The non-display area NA may be disposed on the outside of the display area DA and may surround the display area DA. The non-display area NA may include a dummy light emitting area having a structure substantially the same as that of the light emitting area of ​​the pixel but being controlled not to emit light. Alternatively, the non-display area NA may include the light emitting area of ​​the pixel, but light emitted from the non-display area NA may be blocked by a light shielding member (e.g., a light shield).

[0073] The non-display area NA may further include a sealing area SA. The sealing area SA may be an area in which a sealing member (e.g., a sealant) 50, which will be described in more detail later, is disposed. The sealing area SA may be continuously disposed along an edge portion of the display device 1 including two long sides and two short sides of the display device 1.

[0074] Figure 1 and Figure 2 The sealing area SA is shown to be disposed along all edges (e.g., four edges) of the display device 1 and aligned with the side surfaces of the display device 1, but the present disclosure is not limited thereto. That is, the sealing area SA may be disposed on the inner side of one of the side surfaces of the display device 1, alternatively. Thus, the sealing area SA may provide a space in which an external device and / or a signal pad (or "pad") connected to the external device is disposed, and may prevent or substantially prevent the sealing member 50 from flowing out of the display device 1 when it has not yet been cured.

[0075] Reference Figure 2 The display device 1 may include a light provider 100, a light converter 300 facing the light provider 100, a filling material 70 placed between the light provider 100 and the light converter 300, and a sealing member (e.g., a sealant) 50 that combines the light provider 100 and the light converter 300 together along the edge of each of the light provider 100 and the light converter 300.

[0076] The light provider 100 may include elements and circuits for displaying an image (i.e., a pixel circuit such as a switching element, a dam layer defining first, second, and third light output areas PA1, PA2, and PA3 and a non-light output area PB in the display area DA, and an organic light emitting diode (OLED)). The light provider 100 may be a display substrate.

[0077] The light converter 300 is disposed above the light provider 100 and faces the light provider 100. The light converter 300 may be an opposing substrate facing the display substrate. The light converter 300 may be a color conversion substrate including a color conversion pattern that changes the color of light (or incident light) provided by the light provider 100, but the present disclosure is not limited thereto.

[0078] In the non-display area NA, the sealing member 50 may be disposed between the light provider 100 and the light converter 300. The sealing member 50 may be disposed along the edge of each of the light provider 100 and the light converter 300, and may surround the display area DA in a plan view. In addition, the sealing member 50 may be disposed between the light provider 100 and the light converter 300 in a thickness direction. The sealing member 50 may combine the light provider 100 and the light converter 300 together. That is, the light provider 100 and the light converter 300 may be combined with each other by the sealing member 50. In a plan view, the sealing member 50 may be in the shape of a continuous rectangular frame disposed along the sealing area SA.

[0079] The sealing member 50 may include an organic material such as epoxy resin, but the present disclosure is not limited thereto. A cross-sectional structure of the sealing member 50 and how the sealing member 50 contacts the filling material 70 will be described in more detail later.

[0080] The filling material 70 may be disposed in a space surrounded by the light provider 100, the light converter 300, and the sealing member 50. The filling material 70 may be formed of a material through which light can be transmitted, and may have a buffering function. In one embodiment, the filling material 70 may be formed of an organic material. For example, the filling material 70 may be formed of a silicon-based organic material, an epoxy-based organic material, and / or an acrylic organic material, but the present disclosure is not limited thereto.

[0081] In the following, reference will be made to Figures 4 to 7 The structure of the display device 1 is described.

[0082] Figure 4 It is along Figure 3 A cross-sectional view taken along line IV-IV' of Figure 5 It is along Figure 3 A cross-sectional view taken along the line V-V' of Fig. 6A It is shown Figure 4 An enlarged cross-sectional view of part Q1, Figure 6B and Figure 6C It is shown Figure 4 An enlarged cross-sectional view of a modified example of part Q1, Figure 7 is based on Figure 1 A cross-sectional view of a modified example of the display device of the embodiment.

[0083] Reference Figure 4 and Figure 5 The display device 1 may include a light provider 100, a light converter 300, a sealing member 50 disposed between the light provider 100 and the light converter 300 to combine them together, and a filling material 70 disposed in a space surrounded by the light provider 100, the light converter 300 and the sealing member 50.

[0084] Hereinafter, the light supplier 100 will be described.

[0085] The light supplier 100 may include a first base substrate 110 , first, second, and third switching elements T1 , T2 , and T3 , an insulating film 130 , a dam layer 150 , first, second, and third OLEDs ED1 , ED2 , and ED3 , and a thin film encapsulation layer 170 .

[0086] The first base substrate 110 may be formed of a light-transmitting material. The first base substrate 110 may be a glass substrate and / or a plastic substrate.

[0087] At least one switching element may be disposed in each pixel on the first base substrate 110. For example, the first switching element T1, the second switching element T2, and the third switching element T3 may be disposed in the first pixel PX1, the second pixel PX2, and the third pixel PX3, respectively. Although not specifically shown, a plurality of signal lines (e.g., gate lines, data lines, and / or power lines, etc.) may also be disposed on the first base substrate 110 to transmit signals to the first switching element T1, the second switching element T2, and the third switching element T3.

[0088] The insulating film 130 may be disposed on the first switching element T1, the second switching element T2, and the third switching element T3. The insulating film 130 may be formed as an organic film. For example, the insulating film 130 may include acrylic resin, epoxy resin, imide resin, and / or ester resin.

[0089] On the insulating film 130, the first pixel electrode AE1, the second pixel electrode AE2, and the third pixel electrode AE3 may be respectively disposed in the first pixel PX1, the second pixel PX2, and the third pixel PX3. The first pixel electrode AE1, the second pixel electrode AE2, and the third pixel electrode AE3 may be respectively disposed in the first light emitting area LA1, the second light emitting area LA2, and the third light emitting area LA3, and may at least partially extend into the non-light emitting area. The first pixel electrode AE1, the second pixel electrode AE2, and the third pixel electrode AE3 may be respectively connected to the first switching element T1, the second switching element T2, and the third switching element T3 via a through hole penetrating the insulating film 130.

[0090] In one embodiment, the first pixel electrode AE1, the second pixel electrode AE2, and the third pixel electrode AE3 may be anode electrodes of the first OLED ED1, the second OLED ED2, and the third OLED ED3. The first pixel electrode AE1, the second pixel electrode AE2, and the third pixel electrode AE3 may include a high work function material that facilitates hole injection, such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), and / or indium oxide (In 2 O 3 ) as an example. When the display device 1 is a top emission display device, the first pixel electrode AE1, the second pixel electrode AE2, and the third pixel electrode AE3 may further include a reflective metal layer. The reflective metal layer may include, for example, silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), lead (Pb), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), lithium (Li), calcium (Ca), or a mixture thereof. In some embodiments, the first pixel electrode AE1, the second pixel electrode AE2, and the third pixel electrode AE3 may have a double-layer structure (such as ITO / Ag, Ag / ITO, ITO / Mg, or ITO / MgF 2 ) or a multi-layer (e.g., three or more layers) structure (such as ITO / Ag / ITO).

[0091] The dam layer 150 may be disposed on the first pixel electrode AE1, the second pixel electrode AE2, and the third pixel electrode AE3. The dam layer 150 may be disposed along the boundary of each of the first pixel PX1, the second pixel PX2, and the third pixel PX3. The dam layer 150 may be formed in a grid shape and may include an opening that at least partially exposes the first pixel electrode AE1, the second pixel electrode AE2, and the third pixel electrode AE3. As described above, the first light emitting area LA1, the second light emitting area LA2, and the third light emitting area LA3 may be distinguished from the non-light emitting area by the dam layer 150. That is, the first pixel electrode AE1, the second pixel electrode AE2, and the third pixel electrode AE3 that are not covered by the dam layer 150 and exposed by the dam layer 150 may form the first light emitting area LA1, the second light emitting area LA2, and the third light emitting area LA3, and the first pixel electrode AE1, the second pixel electrode AE2, and the third pixel electrode AE3 that are covered by the dam layer 150 may become the non-light emitting area.

[0092] In some embodiments, the dam layer 150 may include an organic insulating material such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, a polyimide resin, an unsaturated polyester resin, a polyphenylene resin, a polyphenylene sulfide resin, and / or benzocyclobutene (BCB). The organic layer OL may be disposed on portions (e.g., portions) of the first pixel electrode AE1, the second pixel electrode AE2, and the third pixel electrode AE3 exposed by the opening of the dam layer 150. FIG. 6A to FIG. 6C as well as Figure 7 The organic layer OL is described.

[0093] Reference Fig. 6A The organic layer OL may include a first hole transport layer HTL1 disposed on the first pixel electrode AE1, a first emission layer EL1 disposed on the first hole transport layer HTL1, and a first electron transport layer ETL1 disposed on the first emission layer EL1. Fig. 6A In the embodiment of FIG. 1 , the organic layer OL may include only one emission layer (ie, the first emission layer EL1), and the first emission layer EL1 may emit blue light L1. However, the stacking structure of the organic layer OL is not particularly limited to Fig. 6A Instead of the stacked structure shown in FIG. , it can be, for example, Figure 6B and Figure 6C The changes shown in .

[0094] For example, refer to Figure 6B The organic layer OLa may further include a first charge generation layer CGL1 disposed on the first emission layer EL1 and a second emission layer EL2 disposed on the first charge generation layer CGL1 , and a first electron transport layer ETL1 may be disposed on the second emission layer EL2 .

[0095] The first charge generation layer CGL1 may inject charges into each of the first emission layer EL1 and the second emission layer EL2. The first charge generation layer CGL1 may control the charge balance between the first emission layer EL1 and the second emission layer EL2. The first charge generation layer CGL1 may include an n-type charge generation layer and / or a p-type charge generation layer. The p-type charge generation layer may be disposed on the n-type charge generation layer.

[0096] The first emission layer EL1 and the second emission layer EL2 may emit blue light having the same peak wavelength, or may emit blue light having different peak wavelengths. Alternatively, the first emission layer EL1 and the second emission layer EL2 may emit light of different colors. That is, the first emission layer EL1 may emit blue light, and the second emission layer EL2 may emit green light.

[0097] Since the organic layer OLa includes two emission layers, Fig. 6A The emission efficiency and the lifespan (eg, duration) of the organic layer OLa may be improved compared with the emission efficiency and the lifespan (eg, duration) of the organic layer OL.

[0098] Reference Figure 6C , the organic layer OLb may include three emission layers (i.e., a first emission layer EL1, a second emission layer EL2, and a third emission layer EL3) and two charge generation layers (i.e., a first charge generation layer CGL1 and a second charge generation layer CGL2) disposed between the three emission layers. Specifically, the organic layer OLb may further include: a first charge generation layer CGL1 disposed on the first emission layer EL1; a second emission layer EL2 disposed on the first charge generation layer CGL1; a second charge generation layer CGL2 disposed on the second emission layer EL2; and a third emission layer EL3 disposed on the second charge generation layer CGL2. The first electron transport layer ETL1 may be disposed on the third emission layer EL3.

[0099] Like the first emission layer EL1 and the second emission layer EL2 (for example, similar to the first emission layer EL1 and the second emission layer EL2), the third emission layer EL3 can emit blue light. In one embodiment, the first emission layer EL1, the second emission layer EL2, and the third emission layer EL3 can all emit blue light, wherein the blue light emitted by the first emission layer EL1, the second emission layer EL2, and the third emission layer EL3 can all have the same wavelength, or some of the blue light emitted by the first emission layer EL1, the second emission layer EL2, and the third emission layer EL3 can have different wavelengths. In another embodiment, the first emission layer EL1, the second emission layer EL2, and the third emission layer EL3 can emit light of different colors. For example, the first emission layer EL1, the second emission layer EL2, and the third emission layer EL3 can emit blue light and green light, or can emit red light, green light, and blue light to emit white light as a whole.

[0100] Refer again Figure 4 , portions (e.g., some layers) of the organic layer OL on the first pixel electrode AE1, the second pixel electrode AE2, and the third pixel electrode AE3 may be connected to each other. Even if portions of the organic layer OL on the first pixel electrode AE1, the second pixel electrode AE2, and the third pixel electrode AE3 are connected to each other, only portions (e.g., parts) of the organic layer OL that are in contact with the first pixel electrode AE1, the second pixel electrode AE2, and the third pixel electrode AE3 may emit light. If the organic layer OL (e.g., some layers of the organic layer OL) are formed in common, rather than divided for each pixel, portions (e.g., those layers) of the organic layer OL may be formed simultaneously, which is ideal in terms of efficiency.

[0101] Reference Figure 7 , separate organic layers, i.e., first organic layer OL1, second organic layer OL2, and third organic layer OL3, may be formed for the first pixel PX1, the second pixel PX2, and the third pixel PX3. For example, the first organic layer OL1 disposed on the first pixel electrode AE1, the second organic layer OL2 disposed on the second pixel electrode AE2, and the third organic layer OL3 disposed on the third pixel electrode AE3 are separated from each other. The first organic layer OL1, the second organic layer OL2, and the third organic layer OL3 may be disposed on portions of the first pixel electrode AE1, the second pixel electrode AE2, and the third pixel electrode AE3 exposed by the opening of the dam layer 150, and thus may be separated from each other by the dam layer 150. Because the first organic layer OL1, the second organic layer OL2, and the third organic layer OL3 are separated pixel by pixel, the first pixel PX1, the second pixel PX2, and the third pixel PX3 may be prevented or substantially prevented from accidentally emitting light due to leakage current.

[0102] In some embodiments, some layers of each of the first organic layer OL1, the second organic layer OL2, and the third organic layer OL3 may be as follows. Figure 7 , the other layers of each of the first organic layer OL1, the second organic layer OL2, and the third organic layer OL3 may be separated pixel by pixel as shown in FIG. Figure 4 For example, the emission layers of the first organic layer OL1, the second organic layer OL2, and the third organic layer OL3 may be separated pixel by pixel, but the hole transport layer and / or the electron transport layer of the first organic layer OL1, the second organic layer OL2, and the third organic layer OL3 may be formed as a common layer for all pixels.

[0103] Refer again Figure 4When the first pixel electrode AE1, the second pixel electrode AE2 and the third pixel electrode AE3 are anode electrodes of the first OLED ED1, the second OLED ED2 and the third OLED ED3, the common electrode CE may be a cathode electrode of the first OLED ED1, the second OLED ED2 and the third OLED ED3, and may include a low work function material that facilitates electron injection, such as Li, Ca, LiF / Ca, LiF / Al, Al, Mg, Ag, Pt, Pd, Ni, Au, Nd, Ir, Cr, BaF 2 , Ba or their compounds or mixtures (for example, a mixture of Ag and Mg).

[0104] When the display device 1 is a top emission display device, the common electrode CE may have transparency or translucency (ie, may be transparent or translucent). To several hundred When the common electrode CE is formed by using a low work function metal film, the common electrode CE may have transparency or translucency. When the common electrode CE is formed by using a low work function metal film, the common electrode CE may further include a tungsten oxide (W) deposited on the low work function metal film. x O x ), titanium oxide (TiO 2 ), indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium tin zinc oxide (ITZO) and / or magnesium oxide (MgO) to ensure (e.g., enhance) transparency and reduce resistance (e.g., resistance value).

[0105] The first pixel electrode AE1 , the organic layer OL and the common electrode CE may form a first OLED ED1 ; the second pixel electrode AE2 , the organic layer OL and the common electrode CE may form a second OLED ED2 ; the third pixel electrode AE3 , the organic layer OL and the common electrode CE may form a third OLED ED3 .

[0106] A thin film encapsulation layer 170 may be disposed on the common electrode CE to seal the light supplier 100 in order to prevent or substantially prevent external impurities or moisture from penetrating into the first, second and third OLEDs ED1, ED2 and ED3.

[0107] The thin film encapsulation layer 170 may be formed on the entire surface of the display device 1 regardless of the distinction between the first pixel PX1, the second pixel PX2, and the third pixel PX3. Figure 5As shown in , the thin film encapsulation layer 170 may be provided to extend even to a portion of the non-display area NA. Although not specifically shown, one or more cover layers may be further provided between the thin film encapsulation layer 170 and the common electrode CE to cover the common electrode CE, in which case the thin film encapsulation layer 170 may directly cover the cover layer.

[0108] The thin film encapsulation layer 170 may cover the first, second, and third OLEDs ED1, ED2, and ED3 including the common electrode CE. The first, second, and third OLEDs ED1, ED2, and ED3 may be surrounded and sealed by the first base substrate 110 and the thin film encapsulation layer 170.

[0109] The thin film encapsulation layer 170 may include a first encapsulation inorganic film 171 , an encapsulation organic film 172 , and a second encapsulation inorganic film 173 sequentially stacked on the common electrode CE.

[0110] The first and second encapsulation inorganic films 171 and 173 may be formed of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, cerium oxide, silicon oxynitride (SiON), and / or lithium fluoride.

[0111] The encapsulating organic film 172 may be formed of acrylic resin, methacrylic resin, polyisoprene, vinyl resin, epoxy resin, polyurethane resin, cellulose resin, and / or perylene resin.

[0112] The first encapsulation inorganic film 171 may be disposed on the common electrode CE. The common electrode CE may reflect (e.g., conformally reflect) the height difference below, and thus may have surface unevenness. The first encapsulation inorganic film 171 may be formed of an inorganic material, and thus may conformally reflect at least some surface unevenness of the common electrode CE. Therefore, like the common electrode CE (e.g., similar to the common electrode CE), the first encapsulation inorganic film 171 may have surface unevenness.

[0113] The encapsulating organic film 172 may be disposed on the first encapsulating inorganic film 171. The encapsulating organic film 172 may alleviate or planarize a lower height difference by filling surface irregularities of the first encapsulating inorganic film 171.

[0114] The second encapsulating inorganic film 173 may be disposed on the encapsulating organic film 172 .

[0115] The first encapsulation inorganic film 171 and the second encapsulation inorganic film 173 may be in direct contact with each other at their edges. For example, if the size of the first encapsulation inorganic film 171 and the second encapsulation inorganic film 173 is larger than the size of the encapsulation organic film 172 in a plan view, the encapsulation organic film 172 may be completely sealed by the first encapsulation inorganic film 171 and the second encapsulation inorganic film 173. Figure 5 The second encapsulation inorganic film 173 is shown to extend outwardly beyond the first encapsulation inorganic film 171, but the present disclosure is not limited thereto. Alternatively, the first encapsulation inorganic film 171 may extend outwardly beyond the second encapsulation inorganic film 173. Alternatively, the first encapsulation inorganic film 171 and the second encapsulation inorganic film 173 may have the same size in a plan view and thus may be aligned with each other on their sides.

[0116] Hereinafter, the light converter 300 will be described. The light converter 300 may include a second base substrate 310, a light shielding member (e.g., a light shield) 320, first, second, and third color filters 331, 332, and 333, a light conversion pattern 350, and a plurality of cover layers 341 to 346 (i.e., 340) stacked one above the other.

[0117] The second base substrate 310 faces the first base substrate 110. The second base substrate 310 may include at least one of the aforementioned example materials of the first base substrate 110.

[0118] The light shielding member 320 may be disposed on a portion of the second base substrate 310 facing (eg, pointing toward) the light supplier 100 (ie, Figure 4 The light shielding member 320 may be disposed along the boundary between the first light output area PA1, the second light output area PA2, and the third light output area PA3 (i.e., disposed in the non-light output area PB), and the transmission of light may be blocked therethrough. The light shielding member 320 may prevent or substantially prevent mixing of colors from the first pixel PX1, the second pixel PX2, and the third pixel PX3.

[0119] Like (ie, similar to) the non-light output region PB, the light blocking member 320 may be arranged in a lattice form in a plan view. The light blocking member 320 may at least partially overlap the dam layer 150 of the light supplier 100 in a thickness direction.

[0120] The light blocking member 320 may include at least one of an organic material, a metal material including chromium, and carbon black.

[0121] The color filter 330 may be disposed on the second base substrate 310. The color filter 330 may include a first color filter 331, a second color filter 332, and a third color filter 333. The first color filter 331, the second color filter 332, and the third color filter 333 may be absorption filters that absorb light of a set wavelength or a predetermined wavelength while transmitting light of another set wavelength or a predetermined wavelength therethrough.

[0122] The first color filter 331, the second color filter 332, and the third color filter 333 may be disposed in the first light output region PA1, the second light output region PA2, and the third light output region PA3, respectively. The positions of the first color filter 331, the second color filter 332, and the third color filter 333 are not particularly limited, and the first color filter 331, the second color filter 332, and the third color filter 333 may partially extend to even the light shielding member 320, and thus may be disposed on the light shielding member 320.

[0123] The first color filter 331 may block or absorb the blue light L1 between the blue light L1 and the red light L2 emitted by the first wavelength conversion pattern 351. That is, the first color filter 331 may function as a blue light blocking filter that blocks the blue light L1, and may also function as a red light transmitting filter that selectively transmits the red light L2 therethrough. The first color filter 331 may include a red colorant.

[0124] The second color filter 332 may block or absorb the blue light L1 between the blue light L1 and the green light L3 emitted by the second wavelength conversion pattern 352. That is, the second color filter 332 may function as a blue light blocking filter that blocks the blue light L1, and may also function as a green light transmitting filter that selectively transmits the green light L3 therethrough. The second color filter 332 may include a green colorant.

[0125] The third color filter 333 may transmit the blue light L4 emitted by the light-transmitting pattern 353, which will be described in more detail below. That is, the third color filter 333 may function as a blue light-transmitting filter. The third color filter 333 may include a blue colorant.

[0126] The first color filter 331, the second color filter 332, and the third color filter 333 can absorb at least some of the light incident thereon from the outside. For example, because the first color filter 331 can be used as a red light filter, the first color filter 331 can block at least some external light except red light. In addition, because the second color filter 332 can be used as a green light filter, the second color filter 332 can block at least some external light except green light. In addition, because the third color filter 333 can be used as a blue light filter, the third color filter 333 can block at least some external light except blue light. In this way, the first color filter 331, the second color filter 332, and the third color filter 333 can improve the reflection of external light.

[0127] The first overcoat layer 341 may be disposed on the first, second, and third color filters 331, 332, and 333. The first overcoat layer 341 may be disposed on the entire surfaces of the first, second, and third color filters 331, 332, and 333.

[0128] The first covering layer 341 can prevent or substantially prevent the first color filter 331, the second color filter 332, and the third color filter 333 from being damaged or contaminated by impurities such as external moisture or air. In addition, the first covering layer 341 can prevent or substantially prevent the colorant of the first color filter 331, the second color filter 332, and the third color filter 333 from diffusing and / or penetrating into areas other than the areas where the first color filter 331, the second color filter 332, and the third color filter 333 are disposed.

[0129] The second cover layer 342 may be disposed on the first cover layer 341. The second cover layer 342 may be disposed to cover the first cover layer 341. The second cover layer 342 may prevent or substantially prevent the first color filter 331, the second color filter 332, and the third color filter 333 from being damaged or contaminated by impurities such as external moisture or air. In addition, the second cover layer 342 may seal the first wavelength conversion pattern 351, the second wavelength conversion pattern 352, and the light-transmitting pattern 353 together with the third cover layer 343, which will be described in more detail later, and thus may prevent or substantially prevent external moisture or air from penetrating into the first wavelength conversion pattern 351, the second wavelength conversion pattern 352, and the light-transmitting pattern 353.

[0130] The first and second capping layers 341 and 342 may be formed of an inorganic material. For example, the first and second capping layers 341 and 342 may include silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, and / or silicon oxynitride.

[0131] The light conversion pattern 350 may be disposed on the first cover layer 341 and the second cover layer 342. The light conversion pattern 350 may include a first wavelength conversion pattern 351, a second wavelength conversion pattern 352, and a light-transmitting pattern 353.

[0132] The first wavelength conversion pattern 351 may be disposed in the first light output area PA1. The first wavelength conversion pattern 351 may be disposed only in the first light output area PA1, and not in the second light output area PA2 and the third light output area PA3. The first wavelength conversion pattern 351 may convert or transform the peak wavelength of incident light into a set or predetermined peak wavelength, and may emit the resulting light. The first wavelength conversion pattern 351 may convert blue light L1 into red light L2, and may emit the red light L2.

[0133] The first wavelength conversion pattern 351 may include a first base resin 3511 and first wavelength converters 3512 dispersed in the first base resin 3511 , and may further include first scatterers 3513 dispersed in the first base resin 3511 .

[0134] The material of the first base resin 3511 is not particularly limited as long as it has high light transmittance and has suitable (e.g., excellent) dispersion characteristics for the first wavelength converter 3512 and the first scatterer 3513. For example, the first base resin 3511 may include an organic material such as epoxy resin, acrylic resin, cardo resin, and / or imide resin.

[0135] The first wavelength converter 3512 can convert or transform the peak wavelength of the incident light to a set or predetermined peak wavelength. Examples of the first wavelength converter 3512 include quantum dots, quantum rods, and phosphors. For example, quantum dots are particulate matter (e.g., material) that emits light of a specific (e.g., particular) color in response to a transition of electrons from a conduction band to a valence band.

[0136] Quantum dots can be semiconductor nanocrystal materials. Quantum dots can have specific (e.g., concrete) band gaps depending on their composition and / or size. Quantum dots can absorb light and then emit light of a unique wavelength. Examples of semiconductor nanocrystal materials include IV group nanocrystal materials, II-VI group compound nanocrystal materials, III-V group compound nanocrystal materials, IV-VI group compound nanocrystal materials, and combinations thereof.

[0137] For example, the Group IV nanocrystalline material may be silicon (Si), germanium (Ge), or a binary compound such as silicon carbide (SiC) and / or silicon germanium (SiGe), but the present disclosure is not limited thereto.

[0138] In addition, the II-VI group compound nanocrystalline material can be a binary compound such as CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS or a mixture thereof; a ternary compound such as CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe , CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, MgZnS or mixtures thereof; and / or quaternary compounds such as HgZnTeS, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe or mixtures thereof, but the present disclosure is not limited thereto.

[0139] In addition, the III-V compound nanocrystalline material can be a binary compound such as GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb or a mixture thereof; a ternary compound such as GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InNP, InNAs, InNSb, InPAs, InPSb or a mixture thereof; and / or a quaternary compound such as GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, GaAlNP or a mixture thereof, but the present disclosure is not limited thereto.

[0140] In addition, the IV-VI compound nanocrystalline material can be a binary compound, such as SnS, SnSe, SnTe, PbS, PbSe, PbTe or a mixture thereof; a ternary compound, such as SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe or a mixture thereof; and / or a quaternary compound, such as SnPbSSe, SnPbSeTe, SnPbSTe or a combination thereof, but the present disclosure is not limited thereto.

[0141] The quantum dot may have a core-shell structure and may include a core containing (e.g., consisting of) the above-mentioned nanocrystalline material and a shell surrounding the core. The shell of the quantum dot may perform the function of a protective layer for preventing or substantially preventing chemical denaturation of the core to maintain semiconductor properties and / or perform the function of a charging layer for imparting electrophoretic properties to the quantum dot. The shell of the quantum dot may have a single-layer structure or a multi-layer structure. Examples of the shell of the quantum dot include oxides of metals or non-metals, semiconductor compounds, and combinations thereof.

[0142] For example, the metal oxide or non-metal oxide may be a binary compound such as SiO 2 、Al 2 O 3 、TiO 2 、ZnO、MnO、Mn 2 O 3 , Mn 3 O 4 , CuO, FeO, Fe 2 O 3 , Fe 3 O 4 , CoO, Co 3 O 4 and / or NiO, and / or ternary compounds such as MgAl 2 O 4 、CoFe 2 O 4 、NiFe 2 O 4 and / or CoMn 2 O 4 , but the present disclosure is not limited thereto.

[0143] In addition, the semiconductor compound may be CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InSb, AlAs, AlP and / or AlSb, but the present disclosure is not limited thereto.

[0144] The light emitted by the first wavelength converter 3512 may have an emission wavelength spectrum having a half bandwidth of about 45 nm or less, about 40 nm or less, or about 30 nm or less, and as a result, the purity and reproducibility of the color displayed by the display device 1 may be further improved. In addition, the first wavelength converter 3512 may emit light in various directions regardless of the incident direction of the light. Therefore, the lateral visibility of the red light L2 displayed in the first light output area PA1 may be improved.

[0145] Some of the blue light L1 provided by the first light emitting area LA1 may be emitted through the first wavelength conversion pattern 351 without being converted into the red light L2 by the first wavelength converter 3512. The blue light L1 incident on the first color filter 331 without being converted by the first wavelength conversion pattern 351 may be blocked by the first color filter 331. On the other hand, some of the blue light L1 may be converted into the red light L2 by the first wavelength conversion pattern 351, and the red light L2 may be emitted to the outside through the first color filter 331.

[0146] The first scatterer 3513 may have a refractive index different from that of the first matrix resin 3511, and may form an optical interface with the first matrix resin 3511. For example, the first scatterer 3513 may be light scattering particles. The material of the first scatterer 3513 is not particularly limited as long as it can scatter at least some of the light passing through it. For example, the first scatterer 3513 may be particles of a metal oxide and / or particles of an organic material. Examples of metal oxides include titanium oxide (TiO 2 )、ZrO 2 ), aluminum oxide (Al 2 O 3 ), indium oxide (In 2 O 3 ), zinc oxide (ZnO) and tin oxide (SnO 2 ), examples of organic materials include acrylic resins and urethane resins.

[0147] The first scatterer 3513 can scatter incident light in any direction regardless of the incident direction of the incident light without substantially changing the wavelength of the light passing through the first wavelength conversion pattern 351. As a result, the path of the light passing through the first wavelength conversion pattern 351 can be extended, and the color conversion efficiency of the first wavelength converter 3512 can be improved.

[0148] The first wavelength conversion pattern 351 may have a thickness of 3 μm to 15 μm. When the first wavelength conversion pattern 351 is formed to a thickness of 3 μm or more, the efficiency of converting the color of light passing through the first wavelength conversion pattern 351 may be improved. For ease of processing, the upper limit of the thickness of the first wavelength conversion pattern 351 may be, for example, preferably about 15 μm.

[0149] The first wavelength converter 3512 may be contained in the first wavelength conversion pattern 351 at a content of 10% to 60% (e.g., based on the total weight of the first wavelength conversion pattern 351). The first scatterer 3513 may be contained in the first wavelength conversion pattern 351 at a content of 2% to 10% (e.g., based on the total weight of the first wavelength conversion pattern 351).

[0150] The second wavelength conversion pattern 352 may be disposed in the second light output area PA2. The second wavelength conversion pattern 352 may be disposed only in the second light output area PA2, and not in the first light output area PA1 and the third light output area PA3. The second wavelength conversion pattern 352 may convert or transform the peak wavelength of the incident light into a set or predetermined peak wavelength, and may emit the resulting light. The second wavelength conversion pattern 352 may convert the blue light L1 into the green light L3 having a wavelength of about 510 nm to about 550 nm.

[0151] The second wavelength conversion pattern 352 may include a second base resin 3521 and second wavelength converters 3522 dispersed in the second base resin 3521 , and may further include second scatterers 3523 dispersed in the second base resin 3521 .

[0152] The second base resin 3521 may be formed of the same material as that of the first base resin 3511 , or may include at least one of the aforementioned example materials of the first base resin 3511 .

[0153] The second wavelength converter 3522 may convert or transform the peak wavelength of the incident light into a set or predetermined peak wavelength. The second wavelength converter 3522 may convert the blue light L1 having a peak wavelength of 430 nm to 470 nm into the green light L2 having a peak wavelength of 510 nm to 550 nm. Some of the blue light L1 may be emitted through the second wavelength conversion pattern 352 without being converted into the green light L3 by the second wavelength converter 3522, and the blue light L1 may be blocked by the second color filter 332. Some of the blue light L1 may be converted into the green light L2 by the second wavelength conversion pattern 352, and the green light L2 may be emitted through the second color filter 332.

[0154] Examples of the second wavelength converter 3522 include quantum dots, quantum rods, and phosphors. The second wavelength converter 3522 may be substantially the same as the first wavelength converter 3512, and thus, a detailed description thereof will not be repeated.

[0155] The first wavelength converter 3512 and the second wavelength converter 3522 may both include quantum dots. In this case, the diameter of the quantum dots of the first wavelength converter 3512 may be greater than the diameter of the quantum dots of the second wavelength converter 3522.

[0156] The second scatterer 3523 may have a refractive index different from that of the second matrix resin 3521 and may form an optical interface with the second matrix resin 3521. For example, the second scatterer 3523 may be light scattering particles. The second scatterer 3523 is substantially the same as the first scatterer 3513, and therefore, a detailed description thereof will not be repeated.

[0157] The thickness of the second wavelength conversion pattern 352 may be substantially the same as the thickness of the first wavelength conversion pattern 351 .

[0158] The content of the second wavelength converter 3522 in the second wavelength conversion pattern 352 (for example, based on the total weight of the second wavelength conversion pattern 352) may be 10% to 60%. The content of the second scatterer 3523 in the second wavelength conversion pattern 352 (for example, based on the total weight of the second wavelength conversion pattern 352) may be 2% to 10%.

[0159] The light-transmitting pattern 353 may be disposed in the third light output area PA3. The light-transmitting pattern 353 may be disposed only in the third light output area PA3, and not in the first light output area PA1 and the second light output area PA2. The light-transmitting pattern 353 may transmit incident light therethrough. For example, the light-transmitting pattern 353 may transmit the blue light L1 provided thereto or transmit the blue light L1 provided therethrough. The light-transmitting pattern 353 may include a third scatterer 3533, and thus may randomly scatter the blue light L1 in any direction.

[0160] The light-transmitting pattern 353 may include a third base resin 3531 and a third scatterer 3533 dispersed in the third base resin 3531 .

[0161] The third base resin 3531 may be formed of the same material as that of the first base resin 3511 , or may include at least one of the aforementioned example materials of the first base resin 3511 .

[0162] The third scatterer 3533 may have a refractive index different from that of the third matrix resin 3531 and may form an optical interface with the third matrix resin 3531. For example, the third scatterer 3533 may be light scattering particles. The third scatterer 3533 is substantially the same as the first scatterer 3513, and therefore, a detailed description thereof will not be repeated.

[0163] The blue light L1 provided by the third OLED ED3 may pass through the light-transmitting pattern 353 and may be emitted from the third pixel PX3 as the blue light L4.

[0164] The light conversion pattern 350 may protrude in the thickness direction. For example, the light conversion pattern 350 may protrude in the third direction DR3 (i.e., the direction facing the light provider 100). The heights of the first wavelength conversion pattern 351, the second wavelength conversion pattern 352, and the light-transmitting pattern 353 relative to the bottom surface of the light conversion pattern 350 in contact with the second cover layer 342 may be substantially the same, but the present disclosure is not limited thereto. Alternatively, all or some of the heights of the first wavelength conversion pattern 351, the second wavelength conversion pattern 352, and the light-transmitting pattern 353 relative to the bottom surface of the light conversion pattern 350 may be different.

[0165] The light conversion pattern 350 may include a first wavelength conversion pattern 351, a second wavelength conversion pattern 352, and a light-transmitting pattern 353 that protrude toward the light provider 100, and the first wavelength conversion pattern 351, the second wavelength conversion pattern 352, and the light-transmitting pattern 353 may be isolated from each other. The surface of the light conversion pattern 350 may include a height difference. For example, an area where the light conversion pattern 350 is provided may protrude toward the light provider 100, and an area where the light conversion pattern 350 is not provided may be recessed away from the light provider 100.

[0166] The third capping layer 343 may be disposed on the light conversion pattern 350. The third capping layer 343 may cover the light conversion pattern 350.

[0167] The third cover layer 343 may include an inorganic material. The third cover layer 343 may be formed of the same material as that of the first cover layer 341, or may include at least one of the aforementioned example materials of the first cover layer 341. In one embodiment, the third cover layer 343 may include silicon nitride. The third cover layer 343 may reflect (e.g., conformally reflect) the height difference generated by the surface of the light conversion pattern 350, and as a result, the surface of the third cover layer 343 facing the light provider 100 may be concavoconvex. That is, one or both surfaces of the third cover layer 343 may include a convex portion in a region overlapping with the light conversion pattern 350 in the thickness direction and a concave portion in a region not overlapping with the light conversion pattern 350 in the thickness direction.

[0168] The third cover layer 343 together with the second cover layer 342 may seal the first and second wavelength conversion patterns 351 and 352 , and thus may prevent or substantially prevent the first and second wavelength conversion patterns 351 and 352 from being damaged or contaminated by external impurities such as moisture or air.

[0169] The interlayer organic layer 344 may be further disposed on the third cover layer 343. The interlayer organic layer 344 may be a planarization layer including an organic material. The interlayer organic layer 344 may be disposed on the surface of the third cover layer 343 facing the light provider 100 (i.e., disposed on both the convex and concave portions of the third cover layer 343). The interlayer organic layer 344 may fill at least some of the concave portions of the third cover layer 343. The surface of the portion (e.g., part) of the interlayer organic layer 344 overlapping with the convex portion of the third cover layer 343 and the surface of the portion (e.g., part) of the interlayer organic layer 344 overlapping with the concave portion of the third cover layer 343 may not be completely flat. For example, the interlayer organic layer 344 may be flatter in the region overlapping with the convex portion of the third cover layer 343 than in the region overlapping with the concave portion of the third cover layer 343. In addition, the interlayer organic layer 344 may be recessed farther from the light supplier 100 in a region overlapping with a concave portion of the third capping layer 343 than in a region overlapping with a convex portion of the third capping layer 343 .

[0170] The fifth capping layer 345 may be disposed on the interlayer organic layer 344. The fifth capping layer 345 may be formed of an inorganic material such as silicon oxide, silicon nitride, and / or silicon oxynitride.

[0171] The fifth covering layer 345 may be disposed on the flat portion and the non-flat portion of the interlayer organic layer 344. In the region overlapping with the non-flat portion of the interlayer organic layer 344, the fifth covering layer 345 may reflect (e.g., conformally reflect) the recess on the interlayer organic layer 344, and thus may include surface unevenness. That is, the fifth covering layer 345 may include a convex portion in the region overlapping with the flat portion of the interlayer organic layer 344, and may include a concave portion in the region overlapping with the non-flat portion of the interlayer organic layer 344.

[0172] The sixth cover layer 346 may be disposed on the fifth cover layer 345. The sixth cover layer 346 may reflect (e.g., conformally reflect) the surface unevenness of the fifth cover layer 345 and may include surface unevenness. That is, the sixth cover layer 346 may include a convex portion in a region overlapping with a convex portion of the fifth cover layer 345, and may include a concave portion in a region overlapping with a concave portion of the fifth cover layer 345.

[0173] In one embodiment, the sixth capping layer 346 may include an oxide-rich metal or non-metal oxide. The sixth capping layer 346 may include a metal or non-metal central atom and oxygen atoms and nitrogen atoms covalently bonded to the central atom. In one embodiment, the oxygen content ratio of the sixth capping layer 346 may be greater than the nitrogen content ratio of the sixth capping layer 346.

[0174] The sixth capping layer 346 may be located in the outermost layer of the light converter 300. The sixth capping layer 346 may be disposed in a region directly contacting the filling material 70. For example, the sixth capping layer 346 may be an outermost inorganic layer including an inorganic material (eg, an element) as a central atom.

[0175] When the sixth cover layer 346 is disposed at the outermost portion of the light converter 300 (adjacent to the filling material 70) and is disposed as, for example, the outermost inorganic layer, adhesion of the filling material 70 to the surface of the light converter 300 can be improved. The structure and benefits of the sixth cover layer 346 will be described in more detail later.

[0176] The sixth cover layer 346 has been described above as being included in the light converter 300, but the present disclosure is not limited thereto. That is, optionally, the sixth cover layer 346 may be disposed under the light converter 300 as a separate element, in which case the sixth cover layer 346 may be disposed between the filling material 70 and the light converter 300, and thus may be in direct contact with the light converter 300.

[0177] A sealing member (e.g., a sealant) 50 may be provided between the first base substrate 110 of the light provider 100 and the second base substrate 310 of the light converter 300. The sealing member 50 may be in contact with two opposing surfaces (e.g., two surfaces facing each other) of the first base substrate 110 and the second base substrate 310. That is, the two opposing surfaces of the first base substrate 110 and the second base substrate 310 may be bonded to each other via the sealing member 50.

[0178] In one embodiment, the sealing member 50 may be first formed on the first base substrate 110, and then the second base substrate 310 may be attached to the sealing member 50. In another embodiment, the sealing member 50 may be first formed on the second base substrate 310, and then the first base substrate 110 may be attached to the sealing member 50.

[0179] In one embodiment, Figure 2 and Figure 5 As shown in , the outer side surface of the sealing member 50 may be aligned with the side surface of the light provider 100 and the side surface of the light converter 300 in the thickness direction. In the cross-sectional view, the outer side surface of the sealing member 50 may have a straight line shape in the thickness direction. The inner side surface of the sealing member 50 opposite to the outer side surface of the sealing member 50 may be disposed on the inner side of the outer side surface of the sealing member 50, and may be in partial contact with the filling material 70. In the cross-sectional view, the inner side surface of the sealing member 50 may have a straight line shape in the thickness direction, like the outer side surface of the sealing member 50 (e.g., similar to the outer side surface of the sealing member 50).

[0180] The filling material 70 may be in partial contact with the thin film encapsulation layer 170 and the first base substrate 110 of the light supplier 100, and may also be in partial contact with the sixth cover layer 346 of the light converter 300 and the light shielding member 320 disposed between the first light output area PA1 and the sealing area SA of the light converter 300. The filling material 70 may also be in partial contact with the inner side surface of the sealing member 50.

[0181] As described above, in the non-light output region PB, the light converter 300 may be recessed in the upward direction (i.e., in the display direction) and may protrude in the display direction beyond the filling material 70. That is, the sixth covering layer 346 disposed in the outermost layer of the light converter 300 facing the filling material 70 may have a surface unevenness including a concave portion in the non-light output region PB and a convex portion in the first light output region PA1, the second light output region PA2, and the third light output region PA3. The light converter 300 may generally have a relatively uneven surface in the non-light output region PB compared to the first light output region PA1, the second light output region PA2, and the third light output region PA3.

[0182] The filling material 70 can flatten the surface unevenness of the light converter 300. That is, the filling material 70 can fill the portion of the light converter 300 that is recessed in the upward direction or the display direction in the non-light output region PB (e.g., fill in the recess). The filling material 70 can also fill the recess of the sixth cover layer 346 in the non-light emitting region (e.g., the non-light output region PB). Therefore, the filling material 70 can flatten the unevenness on the surface of the light converter 300 facing the light provider 100 (e.g., fill the unevenness on the surface of the light converter 300 facing the light provider 100), and thus can prevent or substantially prevent the elements of the light provider 100 from being physically damaged due to any height difference on the surface of the light converter 300.

[0183] In addition, since the filling material 70 is formed of a material having a buffering function, the filling material 70 may function as a buffering member (eg, a buffer) capable of absorbing an impact generated between the light supplier 100 and the light converter 300 .

[0184] The filling material 70 may have a refractive index of about 1.4 to 1.6. As will be described in more detail later, a difference between the refractive index of the filling material 70 and the refractive index of the sixth cover layer 346 partially contacting the filling material 70 may be less than or equal to about 0.2.

[0185] For example, the filling material 70 may have a first thickness TH1 in the first light output region PA1, the second light output region PA2, and the third light output region PA3, and a second thickness TH2 in the non-light output region PB. The second thickness TH2 may be greater than the first thickness TH1. The first thickness TH1 may be about 2 μm to about 7 μm (for example, the first thickness TH1 may be about 2 μm or about 7 μm). The second thickness TH2 may be about 3 μm to about 9 μm (for example, the second thickness TH2 may be about 3 μm or about 9 μm).

[0186] Figure 8 It is shown Figure 4 An enlarged cross-sectional view of region A, Fig. 9 It is shown Figure 8 FIG. 3 is an enlarged cross-sectional view of the sixth cover layer 346 and the filling material 70 .

[0187] Reference Figure 8 and Fig. 9 , the material of the sixth capping layer 346 may include an oxide-rich metal or a non-metal oxide. The material of the sixth capping layer 346 may include a metal or non-metal central atom and oxygen atoms and nitrogen atoms covalently bonded to the central atom. In one embodiment, the oxygen content ratio of the sixth capping layer 346 may be greater than the nitrogen content ratio of the sixth capping layer 346.

[0188] The sixth capping layer 346 may include a X N Y A variety of materials. Reference AO X N Y , A represents the central atom of the material of the sixth capping layer 346. The central atom A may include a metal central atom or a non-metal central atom. When the central atom A includes a metal central atom, the central atom A may include aluminum (Al). When the central atom A includes a non-metal central atom, the central atom A may include silicon (Si). Referring again to Formula AO X N Y , X represents a first content as the oxygen content in one molecule of the corresponding material, and Y represents a second content as the nitrogen content in one molecule of the corresponding material. Both the first content X and the second content Y may be greater than 0 and less than 1. The relationship between the first content X and the second content Y may represent the relationship between the contents of oxygen and nitrogen in one molecule of the sixth capping layer 346. In one embodiment, the first content X may be greater than the second content Y. That is, in one molecule of the sixth capping layer 346, the content of oxygen may be greater than the content of nitrogen. In one embodiment, the sixth capping layer 346 may include silicon as the central atom A.

[0189] The sixth capping layer 346 may be deposited on the fifth capping layer 345 of the photo converter 300 via a plasma enhanced chemical vapor deposition (PECVD) process. The PECVD process may be performed at a temperature of about 70°C to about 300°C.

[0190] The temperature of the PECVD process may be determined in consideration of efficiency and thermal fragility of elements disposed adjacent to the target object. For example, in consideration of efficiency, the PECVD process may be performed at a temperature of about 150° C. or higher. In addition, in consideration of thermal fragility of elements disposed adjacent to the sixth cover layer 346 (e.g., the first wavelength conversion pattern 351 and the second wavelength conversion pattern 352), the PECVD process may be performed at a temperature of about 250° C. or lower. Therefore, in consideration of both efficiency and thermal fragility, the deposition process for forming the sixth cover layer 346 may be, for example, preferably performed at a temperature of about 150° C. to 250° C., but the present disclosure is not limited thereto. Alternatively, for example, in consideration of efficiency primarily, the deposition process for forming the sixth cover layer 346 may be, for example, preferably performed at a temperature of 250° C. or higher, or in consideration of thermal fragility primarily, the deposition process for forming the sixth cover layer 346 may be, for example, preferably performed at a temperature of 150° C. or lower.

[0191] As described above, at a wavelength of about 550 nm, the sixth cover layer 346 may have a refractive index of about 1.4 to about 1.7, and the filling material 70 may have a refractive index of about 1.4 to about 1.6. The refractive index of the sixth cover layer 346 may be greater than or less than the refractive index of the filling material 70 or substantially the same as the refractive index of the filling material 70. Even if the refractive index of the sixth cover layer 346 is different from the refractive index of the filling material 70, the difference between the refractive index of the sixth cover layer 346 and the refractive index of the filling material 70 may be less than or equal to about 0.2. In this case, any change in the optical path at the interface between the filling material 70 and the sixth cover layer 346 may be reduced.

[0192] The thickness of the sixth covering layer 346 may be about to about The thickness of the sixth covering layer 346 is related to the liquid affinity and the light transmittance (eg, selected based on the liquid affinity and the light transmittance). For example, when the thickness of the sixth covering layer 346 is greater than about When the sixth covering layer 346 has stable lyophilicity to the filling material 70 (for example, stable affinity to the filling material 70), the effective thickness of the sixth covering layer 346 that can ensure lyophilicity to the filling material 70 may be about 1000 Å. In addition, when the thickness of the sixth covering layer 346 is about or less, the light transmittance of the sixth covering layer 346 may be about 80% or more. That is, the thickness of the sixth covering layer 346 that can ensure a light transmittance of at least about 80% or more may be about In terms of lyophilicity and light transmittance, the thickness of the sixth covering layer 346 may be, for example, preferably about to about

[0193] Reference Fig. 9 , AO at the interface between the sixth capping layer 346 and the filling material 70 X N Y The molecules may have a first material bonding force FS therebetween. The molecules of the material of the filling material 70 at the interface between the sixth covering layer 346 and the filling material 70 may have a second material bonding force FL therebetween. X N Y The material of the filling material 70 at the interface between the sixth cover layer 346 and the filling material 70 may have a first interface (surface) tension F1 which is the sum of the first material bonding force FS and a second interface (surface) tension F2 which is the sum of the second material bonding force FL.

[0194] The first interfacial tension F1 may be greater than the second interfacial tension F2. That is, at the interface between the sixth cover layer 346 and the filling material 70, the surface tension of the sixth cover layer 346 may be greater than the surface tension of the filling material 70. For example, the first interfacial tension F1 of the sixth cover layer 346 may be about 60 mN / m or greater. The first surface tension F1 may include polar tension (e.g., polar component) and non-polar tension (e.g., non-polar component). The polar tension may be due to the AO X N Y The tension that occurs due to the polarity caused by the polar part (i.e., one or more oxygen atoms) of the sixth covering layer 346. The non-polar tension may be the tension caused by (one or more) nitrogen atoms having an electronegativity (about 3.0) that is relatively lower than the electronegativity of (one or more) oxygen atoms (having an electronegativity of about 3.5). In one embodiment, the polar tension may be about 35 mN / m or greater, and the non-polar tension may be about 30 mN / m or greater. The sum of the polar tension and the non-polar tension may be equal to the first interfacial tension F1. As the first content X of the sixth covering layer 346 (i.e., the oxygen content of the sixth covering layer 346) increases, the AO of the sixth covering layer 346 is formed. X N YThe polarity of the sixth cover layer 346 may increase, and as a result, the first interfacial tension F1 may increase as a whole. The degree to which the first interfacial tension F1 increases according to the first content X of the sixth cover layer 346 may be greater than the degree to which the first interfacial tension F1 increases according to the second content Y of the sixth cover layer 346 (i.e., the nitrogen content of the sixth cover layer 346).

[0195] When the first interfacial tension F1 of the sixth covering layer 346 is greater than the second interfacial tension F2 of the filling material 70, the interfacial energy of the sixth covering layer 346 may be greater than the interfacial energy of the filling material 70. The greater the interfacial energy of the sixth covering layer 346, the greater the AO at the interface between the sixth covering layer 346 and the filling material 70. X N Y The more it tends to combine with the filling material 70. Specifically, because the interface energy of the sixth covering layer 346 is greater than the interface energy of the filling material 70, the AO at the interface between the sixth covering layer 346 and the filling material 70 is X N Y The AO at the surface of the sixth capping layer 346 has a tendency to combine with the material of the filling material 70 to thereby reduce the interface energy. X N Y Can be easily combined with the filling material 70.

[0196] In this case, the bonding force between the sixth capping layer 346 and the filling material 70 may be a first interface bonding force FSL1. The first interface bonding force FSL1 has a correlation with the difference between the first interface tension F1 and the second interface tension F2. For example, as the difference between the first interface tension F1 and the second interface tension F2 increases, the first interface bonding force FSL1 may increase.

[0197] As described above, as the first content X of the sixth capping layer 346 increases, the AO X N Y The polarity of the sixth cover layer 346 can be increased, and the first interfacial tension F1 can also be increased. As a result, the first interfacial bonding force FSL1 between the sixth cover layer 346 and the filling material 70 can be increased. Therefore, the adhesion of the filling material 70 to the surface of the sixth cover layer 346 or the wettability of the filling material 70 can be improved, and the filling material 70 can be properly attached to the light converter 300. Therefore, the filling material 70 can properly fill the recess on the surface of the light converter 300, and thus the surface of the light converter 300 can be substantially flattened. Once the surface of the light converter 300 is flattened, the risk of scratches can be reduced, and the durability of the display device 1 can be improved. That is, filling the recess on the surface of the light converter 300 without significantly (e.g., significantly) increasing the thickness of the filling material 70 can improve both the surface flattening function of the light converter 300 and the durability of the display device 1.

[0198] AO of the sixth covering layer 346 X N Y The second content Y is greater than 0 and less than 1. Therefore, if at least some nitrogen atoms are included in the sixth capping layer 346 , the function of protecting the inner side of the display device 1 from external moisture or air may be enhanced.

[0199] Hereinafter, display devices according to other embodiments of the present disclosure will be described. Figures 1 to 24 1 and 2. In the present invention, like reference numerals denote like elements, and thus, detailed descriptions thereof will not be repeated.

[0200] Fig.10 is a cross-sectional view of a display device according to another embodiment of the present disclosure, Fig.11 is a cross-sectional view of a display device according to another embodiment of the present disclosure.

[0201] Fig.10 and Fig.11 An example is shown in which at least one covering layer may not be included (eg, repeated) between the light conversion pattern 350 and the sixth covering layer 346. Fig.10 , Fig.10 The display device 2 is different from the display device 1 in that the interlayer organic layer 344 (or the fourth covering layer) is not provided. Fig.10 , the fifth covering layer 345 may be disposed on the third covering layer 343. The fourth covering layer, which is a planarization layer including an organic material, may alleviate the height difference on the light converter 300_1 by filling the recess on the light converter 300_1. However, when the sixth covering layer 346 is applied, the recess on the light converter 300_1 may not need to be filled by the fourth covering layer. The sixth covering layer 346 is disposed at the outermost portion of the light converter 300_1. The sixth covering layer 346 includes a non-metallic compound or a metal compound having a first content X (i.e., a greater oxygen content) than its second content Y (i.e., a nitrogen content), and thus may have a strong interface bonding force with respect to the filling material 70. Therefore, in Fig.10 In the embodiment, without the fourth cover layer, the height difference on the light converter 300_1 can be reduced by simply using the filling material 70. In addition, since the fourth cover layer including the organic material is not provided, the overall thickness (eg, total thickness) of the display device 2 can be reduced.

[0202] Reference Fig.11 , the display device 3 and Fig.10 The display device 2 is different in that the fifth covering layer 345 is not provided. Fig.11, the sixth cover layer 346 can protect the light converter 300_2 from the external air or moisture that may penetrate the light converter 300_2 from below the light converter 300_2. The sixth cover layer 346 may include nitrogen atoms. That is, when the AO of the sixth cover layer 346 is formed X N Y When the second content Y is at least greater than 0 and less than 1, the protective film function of the sixth cover layer 346 may be improved, and as a result, the sixth cover layer 346 may appropriately protect the light converter 300_2 without the aid of the fifth cover layer 345 .

[0203] The third capping layer 343 may include silicon nitride. Fig.11 In the embodiment of the present invention, the sixth capping layer 346 may be directly formed on the third capping layer 343. As described above, the sixth capping layer 346 may include nitrogen atoms. That is, the AO of the sixth capping layer 346 X N Y The second content Y may be at least greater than 0 and less than 1. In this case, even if the sixth capping layer 346 is formed directly on the third capping layer 343, since the material of the sixth capping layer 346 includes nitrogen, any change in optical characteristics that may be caused by a change in the material of a film or layer stacked in a thickness direction may be minimized or reduced.

[0204] Figures 12 to 18 is a cross-sectional view of a display device according to another embodiment of the present disclosure. Figures 12 to 18 Various modified examples of the light shielding member 320 are shown.

[0205] Reference Fig.12 , the optical converter 300_3 and Figure 4 The light converter 300 is different in that it further includes a second light blocking member 321 on the sixth cover layer 346 .

[0206] Specifically, the second light shielding member 321 may be disposed between the fifth cover layer 345 and the sixth cover layer 346. The second light shielding member 321 may be disposed to overlap with the non-light output region PB. Like the light shielding member 320 (e.g., similar to the light shielding member 320), the second light shielding member 321 may be disposed between the first light output region PA1, the second light output region PA2, and the third light output region PA3 to prevent or substantially prevent mixing of light emitted from the first light output region PA1, the second light output region PA2, and the third light output region PA3. The second light shielding member 321 may be formed of a material substantially the same as that of the light shielding member 320. The second light shielding member 321 may be in direct contact with one surface of the sixth cover layer 346. As described above, in the non-light output region PB, a recess may be formed in a direction away from the light provider 100. When the blue light L1 emitted from the light provider 100 passes through the recess, the recess may become an optical interface, in which case the color purity of the blue light L1 may be reduced due to unexpected light conversion such as refraction at the optical interface. However, in Fig.12 In the embodiment of the present invention, the second light shielding member 321 is arranged to overlap the non-light output area PB. Therefore, even if an unexpected light conversion such as refraction occurs at the optical interface, the propagation of light caused by the light conversion can be blocked, and as a result, the color purity of the blue light L1 can be prevented or substantially prevented from being reduced.

[0207] In addition, the second light blocking member 321 may be disposed to overlap the concave portion of the fifth cover layer 345 to planarize the concave portion formed in the non-light output region PB of the light converter 300_3 .

[0208] exist Fig.12 In the embodiment of the present invention, as the first content X of the sixth covering layer 346 increases, the AO of the sixth covering layer 346 is formed. X N Y The polarity of the sixth cover layer 346 can be increased, and the first interfacial tension F1 can also be increased. As a result, the first interfacial bonding force FSL1 between the sixth cover layer 346 and the filling material 70 can be increased. Therefore, the adhesion of the filling material 70 to the surface of the sixth cover layer 346 or the wettability of the filling material 70 can be improved, and the filling material 70 can be properly attached to the light converter 300_3. Therefore, the filling material 70 can properly fill the recess on the surface of the light converter 300_3, so that the surface of the light converter 300_3 can be substantially flattened. Once the surface of the light converter 300_3 is flattened, the risk of forming scratches can be reduced, and the durability of the display device 4 can be improved. That is, filling the recess on the surface of the light converter 300_3 without significantly (e.g., significantly) increasing the thickness of the filling material 70 can improve both the surface flattening function of the light converter 300_3 and the durability of the display device 4.

[0209] Reference Fig.13 , the second light shielding member 321_1 and Fig.12 The second light blocking member 321 is different in that it is provided in the light supplier 100_1.

[0210] Specifically, the second light blocking member 321_1 may be disposed on the second encapsulation inorganic film 173 . The filling material 70 may be disposed on the second light blocking member 321_1 . The second light blocking member 321_1 may be disposed between the second encapsulation inorganic film 173 and the filling material 70 .

[0211] exist Fig.13 In the embodiment of FIG. 1 , in the non-light output area PB, a recess is formed in a direction away from the light provider 100_1. When the blue light L1 emitted from the light provider 100_1 passes through the recess, the recess becomes an optical interface, in which case the color purity of the blue light L1 is reduced due to unexpected light conversion such as refraction at the optical interface. However, in Fig.13 In the embodiment of the present invention, the second light shielding member 321_1 is arranged to overlap the non-light output area PB. Therefore, even if an unexpected light conversion such as refraction occurs at the optical interface, the propagation of light caused by the light conversion can be blocked, and as a result, the color purity of the blue light L1 can be prevented or substantially prevented from being reduced.

[0212] In addition, the second light blocking member 321_1 may be disposed to overlap the concave portion of the fifth capping layer 345 to planarize the concave portion formed in the non-light output region PB of the light converter 300 .

[0213] exist Fig.13 In the embodiment of the present invention, as the first content X of the sixth covering layer 346 increases, the AO of the sixth covering layer 346 is formed. X N Y The polarity of the sixth cover layer 346 can be increased, and the first interfacial tension F1 can also be increased. As a result, the first interfacial bonding force FSL1 between the sixth cover layer 346 and the filling material 70 can be increased. Therefore, the adhesion of the filling material 70 to the surface of the sixth cover layer 346 or the wettability of the filling material 70 can be improved, and the filling material 70 can be properly attached to the light converter 300. Therefore, the filling material 70 can properly fill the recess on the surface of the light converter 300, and thus the surface of the light converter 300 can be substantially flattened. Once the surface of the light converter 300 is flattened, the risk of scratches can be reduced, and the durability of the display device 5 can be improved. That is, filling the recess on the surface of the light converter 300 without significantly (e.g., significantly) increasing the thickness of the filling material 70 can improve both the surface flattening function of the light converter 300 and the durability of the display device 5.

[0214] Reference Fig.14 , the optical converter 300_4 and Fig.11 The light converter 300_2 of the embodiment of the present invention is different in that a second light blocking member 321_2 is provided between the third cover layer 343 and the sixth cover layer 346 of the light converter 300_4.

[0215] The second light blocking member 321_2 may include Fig.13 The material of the second light blocking member 321_1 is substantially the same material.

[0216] The second light blocking member 321_2 may be in direct contact with the third cover layer 343 and the sixth cover layer 346 .

[0217] exist Fig.14 In the embodiment of the present invention, in the non-light output area PB, a recess may be formed in a direction away from the light provider 100. When the blue light L1 emitted from the light provider 100 passes through the recess, the recess may become an optical interface, in which case the color purity of the blue light L1 may be reduced due to unexpected light conversion such as refraction at the optical interface. Fig.14 In the embodiment of the present invention, the second light shielding member 321_2 is arranged to overlap the non-light output area PB. Therefore, even if an unexpected light conversion such as refraction occurs at the optical interface, the propagation of light caused by the light conversion can be prevented, and as a result, the color purity of the blue light L1 can be prevented or substantially prevented from being reduced.

[0218] In addition, the second light blocking member 321_2 may be disposed to overlap the concave portion of the third cover layer 343 to planarize the concave portion formed in the non-light output region PB of the light converter 300_4.

[0219] exist Fig.14 In the embodiment of the present invention, as the first content X of the sixth covering layer 346 increases, the AO of the sixth covering layer 346 is formed. X N YThe polarity of the sixth cover layer 346 can be increased, and the first interfacial tension F1 can also be increased. As a result, the first interfacial bonding force FSL1 between the sixth cover layer 346 and the filling material 70 can be increased. Therefore, the adhesion of the filling material 70 to the surface of the sixth cover layer 346 or the wettability of the filling material 70 can be improved, and the filling material 70 can be properly attached to the light converter 300_4. Therefore, the filling material 70 can properly fill the recess on the surface of the light converter 300_4, so that the surface of the light converter 300_4 can be substantially flattened. Once the surface of the light converter 300_4 is flattened, the risk of scratches can be reduced, and the durability of the display device 6 can be improved. That is, filling the recess on the surface of the light converter 300_4 without significantly (e.g., significantly) increasing the thickness of the filling material 70 can improve both the surface flattening function of the light converter 300_4 and the durability of the display device 6.

[0220] Reference Fig.15 , the optical converter 300_5 and Fig.13 The light converter 300 of the embodiment of the present invention is different in that it further includes a reflective filter 334 disposed on the second base substrate 310. Specifically, the reflective filter 334 may be disposed on the second base substrate 310. The reflective filter 334 may overlap with the light shielding member 320 in the thickness direction. The reflective filter 334 may be disposed in the non-light output region PB. The light shielding member 320 may be disposed on the reflective filter 334.

[0221] The reflective filter 334 may transmit blue light therethrough and may reflect other light.

[0222] Specifically, external light incident in the non-light output area PB of the display device 7 may pass through the reflective filter 334 disposed between the second base substrate 310 and the light shielding member 320. That is, the external light passing through the reflective filter 334 may be blue light, and may be emitted to the outside of the display device 7 by being reflected at the interface between the light shielding member 320 and the reflective filter 334. When the aperture ratio of the third color filter 333 is smaller than the aperture ratios of the first color filter 331 and the second color filter 332, the third color filter 333 may be used. Fig.15 In response to external light being incident on the display surface of the display device 7, the external light is converted by the light converter 300_5 or a metal material disposed in a layer below the light converter 300_5, and then emitted to the outside of the display device 7. In this case, the amount of blue light L4 passing through the third color filter 333 is less than the amount of red light L2 and green light L3 emitted through the first color filter 331 and the second color filter 332. Because different amounts of light are emitted wavelength by wavelength due to reflection of external light, the overall color purity of the display device 7 is degraded. However, in Fig.15In the embodiment, since the reflective filter 334 is used, this color purity degradation can be solved.

[0223] In one embodiment, the light blocking member 320 may include an organic material, and may be formed of a material having a refractive index different from that of the reflective filter 334. When the light blocking member 320 and the reflective filter 334 have different refractive indices, some light may be reflected at an interface between the light blocking member 320 and the reflective filter 334 due to the difference in refractive index between the light blocking member 320 and the reflective filter 334.

[0224] In some embodiments, the light blocking member 320 may be formed of a metal material. When the light blocking member 320 includes the metal material, external light may be reflected by the metal material at an interface between the light blocking member 320 and the reflective filter 334 .

[0225] The material of the light shielding member 320 is not particularly limited as long as it can reflect external light passing through the reflection filter 334 from above the reflection filter 334 .

[0226] exist Fig.15 In the embodiment of the present invention, as the first content X of the sixth covering layer 346 increases, the AO of the sixth covering layer 346 is formed. X N Y The polarity of the sixth cover layer 346 can be increased, and the first interfacial tension F1 can also be increased. As a result, the first interfacial bonding force FSL1 between the sixth cover layer 346 and the filling material 70 can be increased. Therefore, the adhesion of the filling material 70 to the surface of the sixth cover layer 346 or the wettability of the filling material 70 can be improved, and the filling material 70 can be properly attached to the light converter 300_5. Therefore, the filling material 70 can properly fill the recess on the surface of the light converter 300_5, and thus the surface of the light converter 300_5 can be substantially flattened. Once the surface of the light converter 300_5 is flattened, the risk of scratches can be reduced, and the durability of the display device 7 can be improved. That is, filling the recess on the surface of the light converter 300_5 without significantly (e.g., significantly) increasing the thickness of the filling material 70 can improve both the surface flattening function of the light converter 300_5 and the durability of the display device 7.

[0227] Reference Fig.16 , the optical converter 300_6 and Fig.12 The light converter 300_3 is different in that it further includes a reflective filter 334. The reflective filter 334 and the second light shielding member 321 of the light converter 300_6 have been described above, and thus a detailed description thereof will not be repeated.

[0228] Reference Fig.17 , the optical converter 300_7 and Fig.13 The light converter 300_7 is different in that it further includes a reflective filter 334. The reflective filter 334 and the second light shielding member 321_1 of the light converter 300_7 have been described above, and thus a detailed description thereof will not be repeated.

[0229] Reference Fig.18 , optical converter 300_8 and Fig.14 The light converter 300_4 is different in that it further includes a reflective filter 334. The reflective filter 334 and the second light shielding member 321_2 of the light converter 300_8 have been described above, and thus a detailed description thereof will not be repeated.

[0230] Fig.19 is a cross-sectional view of a display device according to another embodiment of the present disclosure, Fig. 20 It is shown Fig.19 An enlarged cross-sectional view of region B, Fig.21 is based on Fig.19 A cross-sectional view of a display device of an embodiment. Fig. 22 is based on Fig.19 A cross-sectional view of a modified example of the display device of the embodiment.

[0231] Reference Figures 19 to 22 The light provider 100_2 of the display device 11 is different from the light provider 100 of the display device 1 in that it further includes a second outermost layer 181 or 181_1.

[0232] Specifically, the light provider 100_2 may include a second outermost layer 181 disposed between the thin film encapsulation layer 170 and the filling material 70. The second outermost layer 181 may be disposed on the second encapsulation inorganic film 173 of the thin film encapsulation layer 170 and may be in direct contact with the filling material 70. The second outermost layer 181 may be formed by Figure 8 and Fig. 9 The second outermost layer 181 is formed of substantially the same material as the sixth cover layer 346 described above. The second outermost layer 181 is substantially the same as described above with respect to the sixth cover layer 346, and thus, a detailed description thereof will not be repeated. Fig. 22 , the second outermost layer 181_1 may be provided to extend into the non-display area NA even between the sealing area SA and the non-light output area PB. Specifically, the second outermost layer 181_1 may cover the top and side surfaces of the second encapsulation inorganic film 173, and may also cover the top surface of the first base substrate 110. The second outermost layer 181_1 may be in direct contact with the top and side surfaces of the second inorganic encapsulation film 173 and with the top surface of the first base substrate 110.

[0233] exist Figures 19 to 21In the embodiment of the present invention, as the first content X of the sixth covering layer 346 increases, the AO of the sixth covering layer 346 is formed. X N Y The polarity of the sixth cover layer 346 may increase, and the first interfacial tension F1 may also increase. As a result, the first interfacial bonding force FSL1 between the sixth cover layer 346 and the filling material 70 may increase. Therefore, the adhesion of the filling material 70 to the surface of the sixth cover layer 346 or the wettability of the filling material 70 may be improved, and the filling material 70 may be properly attached to the light converter 300. Therefore, the filling material 70 may properly fill the recess on the surface of the light converter 300, and thus the surface of the light converter 300 may be substantially flattened, thereby improving the durability of the display device 11. That is, by filling the recess on the surface of the light converter 300 without significantly (e.g., significantly) increasing the thickness of the filling material 70, both the surface flattening function of the light converter 300 and the durability of the display device 11 may be improved.

[0234] In addition, Figures 19 to 21 In the embodiment of the present invention, by disposing the second outermost layer 181 on the thin film encapsulation layer 170, the bonding force between the filling material 70 and the light provider 100_2 can be enhanced. The thin film encapsulation layer 170 may include an encapsulation organic film 172. The encapsulation organic film 172 as a planarization layer can reduce the height difference or surface unevenness generated by the elements of the light provider 100_2 disposed below the encapsulation organic film 172. However, surface unevenness or height difference may be generated on the surface of the light provider 100_2 facing the light converter 300. That is, the light provider 100_2 may include a height difference or surface unevenness on at least a portion thereof. However, because the second outermost layer 181 is disposed on the thin film encapsulation layer 170, the height difference or surface unevenness on the light provider 100_2 can be reduced.

[0235] Fig.23 is a cross-sectional view of a display device according to another embodiment of the present disclosure.

[0236] Reference Fig.23 , the light provider 100_3 of the display device 13 and Fig.19 The light supplier 100_2 is different in that the second encapsulating inorganic film 173 is not provided, and the second outermost layer 181 is directly provided on the encapsulating organic film 172 .

[0237] As described above, the second outermost layer 181 may include nitrogen atoms. That is, when the AO X N YWhen the second content Y is at least greater than 0 and less than 1, the protective film function of the second outermost layer 181 may be improved, and as a result, the second outermost layer 181 may appropriately protect the light supplier 100_3 without the aid of the second encapsulation inorganic film 173 .

[0238] The second outermost layer 181 is shown as a separate element from the thin film encapsulation layer 170_1, but the present disclosure is not limited thereto. That is, the second outermost layer 181 may be understood to be included in the thin film encapsulation layer 170_1. That is, the thin film encapsulation layer 170_1 may include the first encapsulation inorganic film 171, the encapsulation organic film 172, and the second outermost layer 181.

[0239] exist Fig.23 In the embodiment of the present invention, as the first content X of the second outermost layer 181 increases, the AO of the second outermost layer 181 is formed. X N Y The polarity of the second outermost layer 181 can be increased, and the first interfacial tension F1 can also be increased. As a result, the first interfacial bonding force FSL1 between the second outermost layer 181 and the filling material 70 can be increased. Therefore, the adhesion of the filling material 70 to the surface of the second outermost layer 181 or the wettability of the filling material 70 can be improved, and the filling material 70 can be properly attached to the light provider 100_3. Therefore, the filling material 70 can properly fill the recess on the surface of the light provider 100_3, so that the surface of the light provider 100_3 can be substantially flattened. Once the surface of the light provider 100_3 is flattened, the risk of forming scratches can be reduced, and the durability of the display device 13 can be improved. That is, filling the recess on the surface of the light provider 100_3 without significantly (e.g., significantly) increasing the thickness of the filling material 70 can improve both the surface flattening function of the light provider 100_3 and the durability of the display device 13.

[0240] Fig.24 is a cross-sectional view of a display device according to another embodiment of the present disclosure.

[0241] Reference Fig.24 , the light converter 300_9 of the display device 14 and Fig.19 The light converter 300 of FIG. 1 is different in that it does not include the sixth cover layer 346, and the second outermost layer 181 of the light provider 100_2 is disposed in contact with the filling material 70. The light provider 100_2 is similar to the light provider 100_2 described above with reference to FIG. Fig.19 The descriptions are the same, so their detailed descriptions will not be repeated.

[0242] The fifth cover layer 345 of the light converter 300_9 may partially contact the filling material 70. The fifth cover layer 345 may be an outermost film (eg, layer) of the light converter 300_9.

[0243] exist Fig.24 In the embodiment of the present invention, by providing the second outermost layer 181 on the thin film encapsulation layer 170, the bonding force between the filling material 70 and the light provider 100_2 can be enhanced. The thin film encapsulation layer 170 may include an encapsulation organic film 172. The encapsulation organic film 172 as a planarization layer can reduce the height difference or surface unevenness generated by the elements of the light provider 100_2 disposed below the encapsulation organic film 172. However, surface unevenness or height difference may be generated on the surface of the light provider 100_2 facing the light converter 300_9. That is, the light provider 100_2 may include a height difference or surface unevenness on at least a portion thereof. However, because the second outermost layer 181 is provided on the thin film encapsulation layer 170, the height difference or surface unevenness on the light provider 100_2 can be reduced.

[0244] Hereinafter, a method of manufacturing a display device according to an embodiment of the present disclosure will be described.

[0245] Fig.25 is a flowchart showing a method of manufacturing a display device according to an embodiment of the present disclosure, Fig.26 It shows that according to Fig.25 A perspective view of the formation of a sealing member of an embodiment, Fig. 27 It shows that according to Fig.25 A plan view of a first target substrate obtained by forming a sealing member of an embodiment, FIG. 28A to FIG. 28B It is along Fig. 27 A cross-sectional view taken along line XXVIII-XXVIII', Fig.29 It shows that according to Fig.25 A plan view of a target substrate obtained by forming a filling material according to an embodiment of the present invention. Figure 25 to Figure 29 A method of manufacturing a display device is described. Fig.25 and Fig.26 , a first target substrate 100' including an OLED "ED" and a second target substrate including a light conversion pattern 350 and a lyophilic inorganic film (i.e., a sixth covering layer, hereinafter used interchangeably) 346 (the lyophilic inorganic film 346 is disposed on the light conversion pattern 350 to cover the light conversion pattern 350) are prepared (S10). Here, the first target substrate 100' and the Figure 4 The second target substrate corresponds to the light provider 100. Figure 4 As already mentioned above, the optical converter 300 corresponds to the optical converter 300. Figure 4 The photo conversion pattern 350 and the lyophilic inorganic film 346 are described. The step of preparing the second target substrate may include forming the lyophilic inorganic film 346 on the photo conversion pattern 350.

[0246] Thereafter, the sealing member 50 is coated along the edge of the first target substrate 100' (S20). For example, a sealing device 400 for coating the sealing member 50 is placed above the first target substrate 100'. Then, the sealing member 50 is coated on the surface of the first target substrate 100' by moving the sealing device 400 in one direction. The sealing device 400 may be a device for coating the sealing member 50 or for injecting or transferring the sealing member 50.

[0247] like Fig.26 As shown in FIG. 4 , the sealing member 50 may be coated along the edge of the first target substrate 100 ′ by using the sealing device 400 .

[0248] The sealing member 50 does not collapse easily even after the filling material 70 is applied but may maintain its shape, and thus may prevent or substantially prevent the filling material 70 from overflowing the display device 1 .

[0249] If the sealing member 50 does not collapse easily but maintains its shape, the sealing member 50 may be prevented or substantially prevented from flowing out of the first target substrate 100'. In this case, the sealing member 50 may have sufficient (eg, appropriate) viscosity to maintain its shape to some extent without collapsing easily.

[0250] However, the present disclosure is not limited thereto. Alternatively, the sealing member 50 may collapse easily after being coated or may collapse with the passage of time. Therefore, a curing process may be further performed during or after coating the sealing member 50.

[0251] Thereafter, a filling material 70 is coated on the first target substrate 100 ′ on the inner side (in plan view) of the sealing member 50 ( S30 ).

[0252] As described above, the sealing member 50 may collapse with the passage of time and may flow out of the sealing area SA. In this case, if the filling material 70 has been applied, the filling material 70 may also overflow the sealing member 50.

[0253] In order to prevent or substantially prevent the sealing member 50 from flowing out of the sealing area SA, as shown in FIG. Fig.28A As shown in FIG. 1 , the sealing member 50 may be formed on the inner side of at least one side of the first target substrate 100 ′.

[0254] The sealing member 50 may be formed to the same height as or greater than the filling material 70 to prevent or substantially prevent the filling material 70 from overflowing.

[0255] After forming the sealing member 50, an isolation film may also be provided on the sealing member 50 to overlap with the sealing member 50. The isolation film may prevent or substantially prevent the sealing member 50 from being damaged by external foreign matter, etc., until the second target substrate is attached. Some of the filling material 70 may remain on the isolation film. The height of the filling material 70 may be equal to or less than the height of the sealing member 50, and some of the filling material 70 may remain on the sealing member 50 and / or on the top surface of the isolation film. The isolation film may be peeled off after applying the filling material 70 and before attaching the second target substrate. When peeling off the isolation film, some of the filling material 70 remaining on the top surface of the isolation film may be removed together with the isolation film. In one embodiment, an isolation film may not be provided.

[0256] A second target substrate is placed over the sealing member 50 and the filling material 70 so that the lyophilic inorganic film 346 may contact the filling material 70 ( S40 ).

[0257] Hereinafter, a method of manufacturing a display device according to another embodiment of the present disclosure will be described.

[0258] Fig.30 is a plan view for explaining a method of manufacturing a display device according to another embodiment of the present disclosure. Fig.31 It shows that according to Fig.30 How to obtain a perspective view of the first substrate and the second substrate through the first mother substrate and the second mother substrate of an embodiment, Fig.32A and Fig.32B It is along Fig.31 A cross-sectional view taken along line XXXII-XXXII'. Figures 30 to 32B The process of forming the first mother substrate and the second mother substrate based on a sheet, forming the first substrate through the first mother substrate, and forming the second substrate through the second mother substrate is shown. Figures 30 to 32B Examples and Figure 25 to Figure 29 The difference of the embodiment of the present invention is that the manufacturing of the display device is performed on a sheet basis using a first mother substrate and a second mother substrate. Figure 25 to Figure 29 The differences of the embodiments are described Figures 30 to 32B Embodiment of the invention.

[0259] Reference Figures 30 to 32B , the first mother substrate 100 ″ and the second mother substrate combined with each other via the sealing member 50 form a target panel.

[0260] like Fig.30 As shown in FIG. 5 , a sealing area SA may be further provided between adjacent portions of the filling material 70. That is, the sealing member 50 may be provided between adjacent portions of the filling material 70 and may be divided between display panels in a process of separating a target panel into display panels.

[0261] The step of separating the target panel into separate display panels may include performing a scribing process along the boundary SL between the separate display panels. The scribing process may be performed using a heated knife or a laser. The boundary SL may be included in the sealing area SA, in which case portions of the sealing member 50 disposed between adjacent separate display panels may be separated from each other and thus may be included in different separate display panels. Fig.30 and Fig.31 An example is shown in which the target panel is divided into four display panels, but the present disclosure is not limited thereto. Alternatively, the target panel may be divided into two, three, or five display panels.

[0262] Reference Fig.32A and Fig.32B , the sealing member 50 includes a first sealing member 50_1 disposed on the left side and a second sealing member 50_2 disposed on the right side. The second sealing member 50_2 may be a portion of the sealing member 50 that is separated from the rest of the sealing member 50 by performing a scribing process on the target panel. That is, the second sealing member 50_2 may be a portion of the sealing member 50 that is disposed on the sheet (i.e., the target panel) to overlap with one of the boundaries SL. Different from the second sealing member 50_2, the first sealing member 50_1 may be a portion of the sealing member 50 that is disposed on the outer side of the target panel and does not overlap with the boundary SL.

[0263] The first sealing member 50_1 may include an outwardly convex shape on an outer side thereof and an inwardly convex shape on an inner side thereof, but the present disclosure is not limited thereto. Alternatively, the first sealing member 50_1 may have a straight profile on an outer side and / or an inner side thereof in a cross-sectional view.

[0264] The second sealing member 50_2 may be a portion of the sealing member 50 that is divided into separate display panels along the boundary SL in the process of performing a scribing process on the target panel. Therefore, in the cross-sectional view, the second sealing member 50_2 may have a straight profile on its outer side close to the adjacent separate display panel, and thus may be aligned with the light provider 100 and the light converter 300 in the thickness direction. Since the light provider 100 and the light converter 300 correspond to the first target substrate 100' and the second target substrate, respectively, the second sealing member 50_2 may be understood as being aligned with the first target substrate 100' and the second target substrate in the thickness direction. Like the first sealing member 50_1 (e.g., similar to the first sealing member 50_1), the second sealing member 50_2 may include an inwardly convex shape on its inner side, but the present disclosure is not limited thereto. Alternatively, the second sealing member 50_2 may have a straight profile on its inner side in the cross-sectional view.

[0265] exist Figures 30 to 32B In the embodiment of Figure 25 to Figure 29 Compared to the embodiment, individual display panels can be manufactured on a sheet basis, resulting in improved efficiency.

[0266] As used herein, the terms "substantially", "about" and similar terms are used as approximate terms rather than as degree terms, and are intended to explain the inherent deviations of measured values ​​or calculated values ​​that will be recognized by those of ordinary skill in the art. In addition, any numerical range stated here is intended to include all sub-ranges of the same numerical precision contained in the stated range. For example, the range of "1.0 to 10.0" is intended to include all sub-ranges between the stated minimum value 1.0 and the stated maximum value 10.0 (including the stated minimum value 1.0 and the stated maximum value 10.0), that is, having a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as 2.4 to 7.6 as an example. Any maximum numerical limit stated here is intended to include all smaller numerical limits contained therein, and any minimum numerical limit stated in this specification is intended to include all larger numerical limits contained therein. Therefore, the applicant reserves the right to modify this specification (including claims) to explicitly state any sub-range contained in the scope explicitly stated here. All these ranges are intended to be inherently described in this specification so that modifications for explicitly stating any such sub-ranges will meet the requirements.

[0267] Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various suitable modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims and their equivalents.

Claims

1. A display device, comprising: first base; A plurality of light-emitting elements are located on the first substrate; A packaging film covering the plurality of light emitting elements; a second substrate, facing the first substrate; The first outermost film is located on the second substrate, faces the packaging film, and includes AO X N Y , wherein A is a metal element or a non-metal element, and 1>X>Y>0; and a filling material, located between the packaging film and the first outermost film, and in direct contact with the first outermost film, The filling material comprises one selected from silicon-based organic materials, epoxy-based organic materials and acrylic organic materials, and Wherein, the difference in refractive index between the first outermost film and the filling material is less than or equal to 0.

2.

2. The display device according to claim 1, wherein: The first surface tension of the first outermost film is greater than the second surface tension of the filling material.

3. The display device according to claim 2, wherein: The first surface tension of the first outermost film is 60 mN / m or more.

4. The display device according to claim 3, wherein: The polar component of the first surface tension is 35 mN / m or greater.

5. The display device according to claim 1, wherein: The first outermost film has a thickness of 200Å to 1000Å and a transmittance of 80% or more.

6. The display device according to claim 1, wherein: The metal element or non-metal element A includes silicon or aluminum.

7. The display device according to claim 1, further comprising: a sealant located between the first substrate and the second substrate when viewed in a plan view and surrounding the filling material, The filling material is located in a space surrounded by the packaging film, the first outermost film and the sealant.

8. The display device according to claim 7, wherein: The sealant contacts the filling material and directly contacts a surface of the first substrate and a surface of the second substrate to bond the surface of the first substrate and the surface of the second substrate together.

9. The display device according to claim 1, wherein: Each of the plurality of light emitting elements includes: an anode electrode; a cathode electrode facing the anode electrode; and an organic layer located between the anode electrode and the cathode electrode, and is configured to emit blue light.

10. The display device according to claim 1, further comprising: A plurality of light conversion patterns are located between the second substrate and the first outermost film.

11. The display device according to claim 10, wherein: The plurality of light emitting elements are each configured to emit blue light, and The plurality of light conversion patterns include a first wavelength conversion pattern configured to convert the blue light into red light, a second wavelength conversion pattern configured to convert the blue light into green light, and a light-transmitting pattern configured to transmit the blue light therethrough.

12. The display device according to claim 10, wherein: The first outermost film forms a convex portion in a region where the plurality of light conversion patterns are disposed, and forms a concave portion in a region where the plurality of light conversion patterns are not disposed.

13. The display device according to claim 12, wherein: The filling material fills the recessed portion of the first outermost film.

14. The display device according to claim 12, further comprising a light shield, wherein: The light shield is disposed so as to overlap the recessed portion of the first outermost film in the thickness direction.

15. The display device according to claim 1, further comprising: The second outermost film is located on the first substrate, in direct contact with the filling material, and includes BO P N Q , where B is a metal element or a non-metal element, and P>Q, Wherein, the metal element or non-metal element B includes silicon or aluminum.

16. The display device according to claim 15, wherein: The third surface tension of the second outermost film is greater than the second surface tension of the filling material, The third surface tension is 60 mN / m or greater, and A polar component of the third surface tension is 35 mN / m or greater.

17. A display device, comprising: first base; A plurality of light-emitting elements are located on the first substrate; A packaging film covering the plurality of light emitting elements; The outermost film is located on the packaging film and includes AO X N Y , where A is a metal element or a non-metal element, and 1>X>Y>0; a second substrate facing the first substrate; and a filling material, located between the outermost film and the second substrate and in direct contact with the outermost film, The filling material comprises one selected from silicon-based organic materials, epoxy-based organic materials and acrylic organic materials, and Wherein, the difference in refractive index between the outermost film and the filling material is less than or equal to 0.

2.

18. The display device according to claim 17, wherein: The first surface tension of the outermost film is greater than the second surface tension of the filling material, and the first surface tension is 60 mN / m or more.

19. The display device according to claim 18, wherein: The polar component of the first surface tension is 35 mN / m or greater.

20. The display device according to claim 17, wherein: The outermost film has a thickness of 200Å to 1000Å and a transmittance of 80% or more.

21. The display device according to claim 17, wherein: The metal element or non-metal element A includes silicon or aluminum.

Images