DISPLAY DEVICE AND ITS MANUFACTURING METHOD

Abstract

The present invention relates to a display device capable of improving image quality by minimizing light leakage, and a manufacturing method therefor, the display device comprising: a base substrate; a display element disposed on the base substrate in a display area; an encapsulation layer on the display element; and a light-blocking layer disposed on the encapsulation layer in the non-display area.

Description

1 / 22 DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME FIELD OF TECHNIQUE

[001] The present invention relates to a display device and, more specifically, to a display device and a method for manufacturing the same, which can improve image quality by minimizing light leakage. BACKGROUND OF THE TECHNIQUE

[002] Various types of electronic devices, including display modules, are used to provide image information, and electronic devices may include electronic modules that receive external signals or provide output signals to the outside. For example, electronic modules may include camera modules, etc., and the demands for display devices that can obtain high-quality captured images are increasing. DESCRIPTION OF THE INVENTION TECHNICAL PROBLEM

[003] The present invention aims to provide a display device and a method for manufacturing the same, which can improve image quality by minimizing light leakage.

[004] The problems to be solved by the present invention are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art of the following description. TECHNICAL SOLUTION

[005] In order to achieve the above object, a display device, according to an embodiment of the present invention, comprises: a base substrate 100; a display element 200 disposed on the base substrate in a display area (DA); an encapsulation layer 300 over the display element; and a layer of Petition 870250083186, dated 09 / 16 / 2025, page 7 / 53 2 / 22 light shielding (800) arranged over the encapsulation layer in a non-display area (NDA).

[006] In one embodiment, the light protection layer is arranged along the edge of the upper surface of the base substrate and the edge of the upper surface of the encapsulation layer.

[007] In one embodiment, in plan view, the light protection layer surrounds at least one of the encapsulation layer, the display element and the display area of ​​the base substrate.

[008] In one embodiment, in plan view, the light shielding layer has a closed curved shape that surrounds at least one of the encapsulation layer, the display element and the display area of ​​the base substrate.

[009] In one embodiment, in an area without exposure of the base substrate, the light protection layer is placed directly over the encapsulation layer.

[0010] In one embodiment, in the area without exposure of the base substrate, the light-shielding layer is in contact with the encapsulation layer.

[0011] In one embodiment, the interface between the light-shielding layer and the encapsulation layer has a round shape.

[0012] In one embodiment, further comprising an adhesive layer over the encapsulation layer and the light protection layer.

[0013] In one embodiment, further comprising a touch detection unit 900 disposed between the encapsulation layer and the adhesive layer, and also disposed between the encapsulation layer and the light protection layer.

[0014] In one embodiment, the light protection layer is in contact with the touch detection unit.

[0015] In a modality, still comprising a first Petition 870250083186, dated 09 / 16 / 2025, page 8 / 53 3 / 22 planarization layer 910 between the encapsulation layer and the touch detection unit.

[0016] In one embodiment, further comprising a second planar layer 920 between the touch detection unit and the adhesive layer, and also disposed between the touch detection unit and the light protection layer.

[0017] In one embodiment, further comprising a protective substrate 500 over the adhesive layer.

[0018] In one embodiment, further comprising a 600 polarization plate on the protective substrate.

[0019] In one embodiment, the light-shielding layer is placed over the protective substrate to overlap the edge of the encapsulation layer.

[0020] In one embodiment, the light protection layer is placed directly on the protective substrate.

[0021] In one embodiment, in plan view, the light shielding layer surrounds the polarization plate.

[0022] In one embodiment, the light protection layer comprises: a first light protection layer 800 disposed directly over the encapsulation layer; and a second light protection layer 820 disposed directly over the protective substrate to overlap the encapsulation layer.

[0023] In one embodiment, further comprising a 350 barrier disposed over the base substrate to overlay the light protection layer in the non-exhibition area of ​​the base substrate.

[0024] In one embodiment, a portion of the encapsulation layer is disposed between the barrier and the light-shielding layer.

[0025] In one embodiment, the light protection layer includes a black pigment or an organic black pigment.

[0026] In one embodiment, the light protection layer has a Petition 870250083186, dated 09 / 16 / 2025, page 9 / 53 4 / 22 square ring shape with four sides.

[0027] In one embodiment, the four sides comprise: a first side adjacent to a filler area (PDA) of the base substrate; a second side arranged to face the first side; a third side connected to one end of the first side and to one end of the second side; and a fourth side arranged to face the third side and connected to the other end of the first side and to the other end of the second side.

[0028] In one embodiment, the width of the first side and the width of the second side are the same, and the width of the third side and the width of the third side are different.

[0029] According to one embodiment of the description, a method for manufacturing a display device, the method comprising: placing a display element in a display area of ​​a base substrate; placing an encapsulation layer over the display element; and placing a light protection layer over the encapsulation layer in a non-display area of ​​the base substrate.

[0030] Specific details of other modalities are included in the detailed description and drawings. ADVANTAGEOUS EFFECTS OF THE INVENTION

[0031] According to the display device of the present invention, light leakage in the display device can be minimized. Therefore, the image quality of the display device can be improved.

[0032] Furthermore, according to the display device of the present invention, moisture penetration into the display device can be prevented.

[0033] Meanwhile, the effects obtained with the present invention are not limited to those mentioned above, and other effects not Petition 870250083186, dated 09 / 16 / 2025, page 10 / 53 5 / 22 mentioned will be clearly understood by those versed in the technique of the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a schematic plan view of a display device according to an embodiment;

[0035] Figure 2 is a schematic cross-sectional view taken along line II' of Figure 1;

[0036] Figures 3 to 6 are schematic drawings to describe a method of manufacturing a display device according to an embodiment;

[0037] Figure 7 is a schematic cross-sectional view of a display device according to an embodiment;

[0038] Figure 8 is a schematic cross-sectional view of a display device according to an embodiment;

[0039] Figure 9 is a schematic cross-sectional view of a display device according to an embodiment;

[0040] Figure 10 is a schematic cross-sectional view of a display device according to an embodiment;

[0041] Figure 11 is a schematic cross-sectional view of a display device, according to one embodiment; and

[0042] Figure 12 is a schematic cross-sectional view of a display device, according to one embodiment. METHOD FOR CARRYING OUT THE INVENTION

[0043] The advantages and features of the present invention, and the methods for achieving them, will be clearly understood by referring to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments described below, but can be implemented in various different forms. The embodiments are provided merely to complete the description of the present invention and to Petition 870250083186, dated 09 / 16 / 2025, page 11 / 53 6 / 22 fully inform those skilled in the art of the scope of the invention, which is defined only by the scope of the claims.

[0044] The expression that one element or layer is on top of another element or layer includes both the case where it is directly on top of the other element and the case where another layer or element is interposed. Throughout the specification, identical reference numbers denote identical elements. The shapes, sizes, ratios, angles, numbers and the like described in the drawings to describe the embodiments are merely illustrative, and the present invention is not limited to these illustrated features.

[0045] Although terms such as first, second, etc., are used to describe various components, it should be understood that these components are not limited by these terms. These terms are only used to distinguish one component from another. Therefore, a first component mentioned below may also be referred to as a second component within the technical scope of the present invention.

[0046] The respective characteristics of the various embodiments of the present invention can be combined or selectively combined, in whole or in part, various connections and technical operations are possible, and each embodiment can be implemented independently or implemented in association with the others.

[0047] Specific modalities will be described below with reference to the accompanying drawings.

[0048] Figure 1 is a schematic plan view of a display device according to an embodiment, and Figure 2 is a schematic cross-sectional view made along line II' of Figure 1.

[0049] As illustrated in Figures 1 and 2, a display device, according to one embodiment, may include a layer of Petition 870250083186, dated 09 / 16 / 2025, p. 12 / 53 7 / 22 passivation 700, a base substrate 100, a plurality of display elements 200, an encapsulation layer 300, an adhesive layer 400, a protective substrate 500, a polarization plate 600 and a light protection layer 800.

[0050] The passivation layer 700 can protect the underside of the base substrate 100, thus performing a protective function. For example, the passivation layer 700 can prevent a scratch from occurring on the underside of the base substrate 100. For this purpose, the passivation layer 700 can be placed on the underside of the base substrate 100.

[0051] The base substrate 100 can be disposed over the passivation layer 700. The base substrate 100 can be a flexible substrate which can be curved, bent or rolled. For example, the base substrate 100 can include a polymer resin, such as polyimide (PI), but is not limited to this. For another example, the base substrate 100 can include a glass material or a metallic material. Here, the glass can be flexible or rigid glass, and the metal can be flexible or rigid metal. According to a display device, according to an embodiment, the base substrate 100 can be, for example, an ultrathin glass. The ultrathin glass can have, for example, a very thin thickness by means of an etching process. Here, the thickness of the base substrate 100 can mean a magnitude in a third direction DR3.

[0052] A plurality of display elements 200 can be arranged on the base substrate 100. For example, the display elements 200 can be arranged on the base substrate 100 in the third direction DR3. At this time, the display elements 200 can be arranged in a display area DA of the base substrate 100. The display device 200 can include a light-emitting element. The light-emitting element can include an anode electrode, Petition 870250083186, dated 09 / 16 / 2025, page 13 / 53 8 / 22 a light-emitting layer and a cathode electrode. The anode electrode, the light-emitting layer, and the cathode electrode can be sequentially stacked along the third direction DR3. For example, a light-emitting layer can be stacked on the anode electrode in the third direction DR3, and a cathode electrode can be placed on the light-emitting layer in the third direction DR3.

[0053] The light-emitting layer can be an organic light-emitting layer that includes an organic material. The light-emitting layer can include a hole transport layer, an organic light-emitting layer, and an electron transport layer. When the anode electrode receives a predetermined voltage through a thin-film transistor and the cathode electrode receives the cathode voltage, holes and electrons can be transferred to the organic light-emitting layer through the hole transport layer and the electron transport layer, respectively, and can be combined with each other to emit light in the organic light-emitting layer.

[0054] In another example, the light-emitting elements may include a quantum dot light-emitting diode that includes a quantum dot light-emitting layer, an inorganic light-emitting diode that includes an inorganic semiconductor, or a light-emitting microdiode.

[0055] The encapsulation layer 300 can be arranged over the light-emitting elements 200. For example, the encapsulation layer 300 can be arranged over the light-emitting elements 200 in the third direction DR3. The encapsulation layer 300 can cover the top and side surfaces of each of the light-emitting elements 200 and protect the light-emitting elements 200. The encapsulation layer 300 can include at least one inorganic layer and at least one organic layer to encapsulate the Petition 870250083186, dated 09 / 16 / 2025, page 14 / 53 9 / 22 light-emitting elements 200. For example, the encapsulation layer 300 may include a first inorganic layer, an organic layer, and a second inorganic layer sequentially stacked along a third direction on the base substrate 100.

[0056] The light shielding layer 800 can be arranged over the encapsulation layer 300 and the base substrate 100. As illustrated in Figures 1 and 2, the light shielding layer 800 can be arranged in an NDA-free display area of ​​the base substrate 100. From a plan view, as illustrated in Figure 1, the light shielding layer 800 can have the shape of a closed curve that encircles the DA display area of ​​the base substrate 100. For example, as illustrated in Figures 1 and 2, the light shielding layer 800 can have the shape of a closed curve that encircles at least one of the DA display area, the plurality of display elements 200, and the encapsulation layer 300 in the NDA-free display area.

[0057] As illustrated in Figure 2, the light protection layer 800 can be arranged on an edge of the top surface of the base substrate 100. For example, the light protection layer 800 can be arranged on the base substrate 100 in the third direction DR3, and at this point, the light protection layer 800 can be arranged along the edge of the top surface of the base substrate 100. The top surface of the base substrate 100 can be the surface on which the display elements 200 described above are arranged.

[0058] The light protection layer 800 can be arranged along the edge of the top surface of the base substrate 100 and the edge of the top surface of the encapsulation layer 300. The light protection layer 800 can face the edge of the top surface of the base substrate 100 and the edge of the top surface of the encapsulation layer 300 in the third direction DR3. At this point, on the edge of the top surface of the base substrate 100, the protection layer of Petition 870250083186, dated 09 / 16 / 2025, page 15 / 53 10 / 22 light 800 may be in contact with (or be in direct contact with) the top surface of the base substrate 100. Furthermore, at the edge of the top surface of the encapsulation layer 300, the light protection layer 800 may be in contact with (or be in direct contact with) the encapsulation layer 300. The edge of the encapsulation layer 300 may be disposed between the base substrate 100 and the light protection layer 800.

[0059] As illustrated in Figure 2, the light protection layer 800 can be placed directly on the base substrate 100 and directly on the encapsulation layer 300 in the non-display NDA area.

[0060] As illustrated in Figure 2, an interface between the light protection layer 800 and the encapsulation layer 300 can have a round shape.

[0061] The light-shielding layer 800 may include a light-absorbing material (or an opaque material). For example, the light-shielding layer 800 may include an inorganic black pigment or an organic black pigment. The inorganic black pigment may be carbon black and the organic black pigment may include at least one of Lactam Black, Perylene Black, and Aniline Black, but the present description is not limited to this. For example, the light-shielding layer 800 may be made of a material containing any of the colors other than black. According to one embodiment, the light-shielding layer 800 may include an opaque white material.

[0062] As illustrated in Figure 1, the light-shielding layer 800 may have a square ring shape with four sides. For example, the four sides may include a first side S1, a second side S2, a third side S3, and a fourth side S4.The first side, S1, can be placed adjacent to a filler area (PDA) of the base substrate. The second side, S2, can be placed to face the... Petition 870250083186, dated 09 / 16 / 2025, p. 16 / 53 11 / 22 first side S1 in a second direction DR2. The third side S3 can be connected to one end of the first side S1 and to one end of the second side S2. The fourth side S4 can be arranged to face the third side S3 in a first direction DR1 and can be connected to the other end of the first side S1 and to the other end of the second side S2. The first through fourth sides S1 to S4 can be formed integrally.

[0063] The sides of the 800 light protection layer, which face each other, may have the same width. For example, the first side S1 and the second side S2, which face each other in the second direction DR2, may have the same width. In other words, a width W1 of the first side S1 and a width W2 of the second side S2 may be the same. Furthermore, the third side S3 and the fourth side S4, which face each other in the first direction DR1, may have the same width. In other words, a width W3 of the third side S3 and a width W4 of the fourth side S4 may be the same. However, the present description is not limited to this, and the width W3 of the third side S3 and the width W4 of the fourth side S4 may be different.

[0064] The 800 light shielding layer can prevent the phenomenon of light leakage, in which light provided by the 200 display elements is emitted to the edge of the display device. For example, light from the 200 display elements that are close to the non-display NDA area of ​​the base substrate 100 between the 200 display elements can be emitted outwards through the edge of the display device (e.g., the non-display NDA area of ​​the base substrate 100), and the light shielding layer 800 described above can prevent light from the 200 display elements from being emitted outwards through the edge of the display device. Consequently, the image quality of the display device can be improved. Furthermore, as the light shielding layer 800 covers the edge of the layer of Petition 870250083186, dated 09 / 16 / 2025, page 17 / 53 12 / 22 encapsulation 300, which is susceptible to encapsulation, the light protection layer 800 can prevent air and moisture from permeating the display elements 200 through the edge of the encapsulation layer 300.

[0065] The adhesive layer 400 can be placed over the light protection layer 800 and the encapsulation layer 300. For example, the adhesive layer 400 can be placed in the center of the encapsulation layer 300 in the DA display area of ​​the base substrate 100, and the adhesive layer 400 can be placed on the edge of the encapsulation layer 300 and the light protection layer 800 in the non-NDA display area of ​​the base substrate 100.

[0066] The adhesive layer 400 may be in contact with the light-protecting layer 800 and the encapsulation layer 300. The adhesive layer 400 may adhere to the encapsulation layer 300 and the protective substrate 500, to be described later, and adhere to the light-protecting layer 800 and the protective substrate 500. For example, the adhesive layer 400 may include a pressure-sensitive adhesive, such as an optically transparent resin (OCR) or an optically transparent adhesive (OCA).

[0067] The protective substrate 500 can be placed over the adhesive layer 400. The protective substrate 500 can be a flexible substrate which can be curved, bent or rolled. For example, the protective substrate 500 can include a polymer resin, such as polyimide (PI), but is not limited to this. For another example, the protective substrate 500 can include a glass material or a metallic material. Here, the glass can be flexible or rigid glass, and the metal can be flexible or rigid metal.

[0068] The entire protective substrate 500 can be overlaid by the base substrate 100. However, the protective substrate 500 described above may have a smaller area than the base substrate 100. By Petition 870250083186, dated 09 / 16 / 2025, page 18 / 53 13 / 22 For example, the area of ​​the protective substrate 500 along a first direction DR1 and a second direction DR2 can be larger than the area of ​​the base substrate 100 along the first direction DR1 and the second direction DR2. At this point, in plan view, the edge of the protective substrate 500 can be surrounded by the edge of the base substrate 100. In other words, the edge of the base substrate 100 can extend further in the first direction DR1 and the second direction DR2 than the edge of the protective substrate 500. As described above, since the area of ​​the protective substrate 500 is smaller than the area of ​​the base substrate 100, the dead space of the display device can be minimized.Meanwhile, the length of the protective substrate 500 in the first direction DR1 can be greater than the length of the base substrate 100 in the first direction DR1, as illustrated in Figure 2, and the length of the protective substrate 500 in the second direction DR1 can be less than the length of the base substrate 100 in the second direction DR2, as illustrated in Figure 1.

[0069] The 600 polarization plate can be arranged on the 500 protective substrate. For example, the 600 polarization plate can be arranged on the 500 protective substrate in the third direction DR3. The 600 polarization plate can include a linear polarization layer and at least one delay layer. The linear polarization layer can be an optical layer that linearly polarizes the light provided from outside in one direction. The delay layer can be a λ / 2 delay layer and a λ / 4 delay layer. The 600 polarization plate can function to reduce reflection caused by external light.

[0070] The 600 polarization plate can overlap the 100 base substrate. For example, the entire 600 polarization plate can be overlapped by the 100 base substrate. Meanwhile, the 100 base substrate described above can have a larger area than the 600 polarization plate. For example, the area of ​​the 100 base substrate along the Petition 870250083186, dated 09 / 16 / 2025, page 19 / 53 14 / 22 The first direction DR1 and the second direction DR2 can be larger than the area of ​​the 600 polarization plate along the first direction DR1 and the second direction DR2. At this moment, in plan view, the edge of the 100 base substrate can encircle the edge of the 600 polarization plate. In other words, the edge of the 100 base substrate can extend further in the first direction DR1 and the second direction DR2 than the edge of the 600 polarization plate.

[0071] Furthermore, the 600 polarization plate can overlap the 500 protective substrate. For example, the entire 600 polarization plate can overlap the 500 protective substrate. Meanwhile, the aforementioned 500 protective substrate can have a larger area than the 600 polarization plate. For example, the area of ​​the 500 protective substrate along the first direction DR1 and the second direction DR2 can be larger than the area of ​​the 600 polarization plate along the first direction DR1 and the second direction DR2. At this point, in a plan view, the edge of the 600 polarization plate can encircle the edge of the 500 protective substrate. In other words, the edge of the 500 protective substrate can extend further in the first direction DR1 and the second direction DR2 than the edge of the 600 polarization plate.

[0072] Meanwhile, although not illustrated, a color filter may be additionally arranged between the protective substrate 500 and the polarization plate 600.

[0073] Hereafter, a method of manufacturing a display device according to an embodiment shall be described with reference to Figure 2 above and Figures 3 to 6 as follows.

[0074] Figures 3 to 6 are schematic drawings to describe a method of manufacturing a display device according to an embodiment.

[0075] First, as illustrated in Figures 3 and 2, the 200 display elements can be arranged in a DA display area of ​​a Petition 870250083186, dated 09 / 16 / 2025, page 20 / 53 15 / 22 base substrate 100, and an encapsulation layer 300 can be placed in the DA display area and in a non-display NDA area of ​​the base substrate 100 to cover the display elements 200.

[0076] Subsequently, as illustrated in Figures 4 and 2, a light-protecting layer 800 can be arranged to cover the edge of the encapsulation layer 300 in the non-displaying NDA area of ​​the base substrate 100. For example, the light-protecting layer 800 can be formed by spraying a material (e.g., organic pigment) used in the light-protecting layer 800 when using inkjet equipment. For example, the organic pigment sprayed by a nozzle of the inkjet equipment can be formed along the edge of the upper surface of the base substrate 100 and the edge of the upper surface of the encapsulation layer 300. In one embodiment, the light-protecting layer 800 can be formed, for example, by applying a material (e.g., organic pigment) used in the light-protecting layer 800 when using inkjet equipment.For example, the organic pigment discharged from an inkjet printing head can be formed along the edge of the upper surface of the base substrate 100 and the edge of the upper surface of the encapsulation layer 300. In one embodiment, the light protection layer 800 can be formed, for example, by applying the organic pigment using an electrohydrodynamic (EHD) printing device. For example, the organic pigment discharged from a nozzle of the electrohydrodynamic (EHD) printing device can be formed along the edge of the base substrate 100 and the edge of the encapsulation layer 300.

[0077] Subsequently, the organic pigment formed along the edge of the base substrate 100 and the edge of the encapsulation layer 300 can be cured through a curing process. The curing process may include, for example, at least one of a Petition 870250083186, dated 09 / 16 / 2025, page 21 / 53 16 / 22 ultraviolet curing process, a heat curing process, and a room temperature curing process. In other words, organic pigment can be cured by applying ultraviolet rays or heat to the organic pigment. Alternatively, organic pigments can be naturally cured by remaining at room temperature for a certain period of time. The cured organic pigment can function as the 800 light protection layer.

[0078] Subsequently, as illustrated in Figure 2, an adhesive layer 400 can be placed over the light protection layer 800 and the encapsulation layer 300.

[0079] Next, as illustrated in Figures 5 and 2, a protective substrate 500 can be placed over the adhesive layer 400.

[0080] Subsequently, as illustrated in Figures 6 and 2, a polarization plate 600 can be placed on the protective substrate 500.

[0081] Figure 7 is a schematic cross-sectional view of a display device according to one embodiment, and Figure 7 may be another cross-sectional view made along line II' of Figure 1.

[0082] The display device in Figure 7 differs from the display device in Figure 2 described above by still including a 900 touch detection unit, and the difference will be mainly described as follows.

[0083] As illustrated in Figure 7, the touch detection unit 900 can be placed on the encapsulation layer 300. For example, the touch detection unit 900 can be placed between the encapsulation layer 300 and the adhesive layer 400 in the DA display area of ​​the base substrate 100, and it can be placed between the edge of the encapsulation layer 300 and the light protection layer 800 in the non-NDA display area of ​​the base substrate 100. Petition 870250083186, dated 09 / 16 / 2025, page 22 / 53 17 / 22

[0084] The touch detection unit 900 may be in contact with (or be in direct contact with) the encapsulation layer 300, the light protection layer 800 and the adhesive layer 400. Here, the interface between the touch detection unit 900 and the light protection layer 800 may have a round shape.

[0085] The 900 touch detection unit may include a plurality of touch electrodes to detect user touch in a capacitive mode and touch lines connecting the plurality of touch electrodes to the touch driver. For example, the 900 touch detection unit may detect user touch using a mutual capacitance method or a self-capacitance method.

[0086] For another example, the touch detection unit 900 can be disposed on a separate substrate located in a DA display area of ​​the display device. In this case, the substrate supporting the touch detection unit 900 can be a base member that encapsulates the DA display area.

[0087] The plurality of touch electrodes of the 900 touch detection unit can be arranged in a touch sensor area overlapping the DA display area of ​​the display device. The touch lines of the 900 touch detection unit can be arranged in a peripheral touch area that overlaps a non-DA display area of ​​the display device.

[0088] Figure 8 is a schematic cross-sectional view of a display device, according to one embodiment, and Figure 8 may be another cross-sectional view made along line II' of Figure 1.

[0089] The display device in Figure 8 differs from the display device in Figure 7 described above by still including a first planarization layer 910, and the difference will be mainly described below. Petition 870250083186, dated 09 / 16 / 2025, page 23 / 53 18 / 22

[0090] As illustrated in Figure 8, the first planarization layer 910 can be placed between the encapsulation layer 300 and the touch detection unit 900.

[0091] The first planarization layer 910 is provided so as to allow a touch electrode and touch lines of the touch detection unit 900 to be arranged on a planarized surface in the DA display area of ​​the base substrate 100, and such first planarization layer 910 may be formed from a material that includes at least one organic layer or one inorganic layer.

[0092] Figure 9 is a schematic cross-sectional view of a display device according to another embodiment, and Figure 9 may be another cross-sectional view made along line II' of Figure 1.

[0093] The display device in Figure 9 differs from the display device in Figure 7 described above by still including a second planarization layer 920, and the difference will be mainly described as follows.

[0094] As illustrated in Figure 9, the second planarization layer 920 can be arranged over the touch detection unit 900. For example, the second planarization layer 920 can be arranged between the touch detection unit 900 and the adhesive layer 400 in the DA display area of ​​the base substrate 100, and it can be arranged between the edge of the touch detection unit 900 and the light protection layer 800 in the non-NDA display area of ​​the base substrate 100.

[0095] The second planarization layer 920 may be in contact with (or be in direct contact with) the touch detection unit 900, the light protection layer 800 and the adhesive layer 400. Here, the interface between the second planarization layer 920 and the light protection layer 800 may have a round shape.

[0096] The second planarization layer 920 is provided in a way Petition 870250083186, dated 09 / 16 / 2025, page 24 / 53 19 / 22 to allow the adhesive layer 400 to be placed on a planarized surface, and such second planarization layer 920 may be formed by a material that includes at least one organic layer or one inorganic layer.

[0097] Meanwhile, according to one embodiment, the display device may include both the first and second planarization layers 910 and 920 described above.

[0098] Figure 10 is a schematic cross-sectional view of a display device, according to one embodiment, and Figure 10 is another cross-sectional view made along line II' of Figure 1.

[0099] The display device in Figure 10 differs from the display device in Figure 2 described above in the position of a light protection layer 820, and the difference will be mainly described below.

[00100] As illustrated in Figure 10, the light-shielding layer 820 can be placed over the protective substrate 500. For example, the light-shielding layer 820 can be placed over the protective substrate 500 in the non-display NDA area. In other words, in the non-display NDA area, the light-shielding layer 820 can be placed directly over the protective substrate 500. According to one embodiment, in the non-display NDA area, the light-shielding layer 820 can be placed over the protective substrate 500 to surround the edge of the encapsulation layer 300.

[00101] In plan view, the light protection layer 820 may have a closed curved shape (e.g., a square ring) surrounding a polarization plate 600. The light protection layer 820 may be in contact with (or be in direct contact with) the top surface of the protective substrate 500 and the side surface of the polarization plate 600. At this point, the thickness of the light protection layer Petition 870250083186, dated 09 / 16 / 2025, page 25 / 53 20 / 22 820 may be less than the thickness of the 600 polarizing plate. Here, the thickness of the 820 light shielding layer (or the 600 polarizing plate) may refer to the magnitude in the third direction DR3.

[00102] Meanwhile, according to one embodiment, the light protection layer 820 can be arranged over the protective substrate 500 to surround the edge of the encapsulation layer 300.

[00103] Figure 11 is a schematic cross-sectional view of a display device according to an embodiment, and Figure 11 may be a cross-sectional view made along line II' of Figure 1.

[00104] The display device in Figure 11 differs from the display device in Figure 10 described above by including two layers of 800 light protection, and the difference will be mainly described as follows.

[00105] As illustrated in Figure 11, a light-shielding layer 800 (hereinafter, a first light-shielding layer 800) can be placed over the encapsulation layer 300, and another light-shielding layer 820 (hereinafter, a second light-shielding layer 820) can be placed over the protective substrate 500. In other words, the first light-shielding layer 800 can be the same as the light-shielding layer 800 of Figures 1 and 2 described above, and the second light-shielding layer 820 can be the same as the light-shielding layer 820 of Figure 10 described above. Consequently, a detailed description of the first light protection layer 800 will be referred to the description relating to the light protection layer 800 in Figures 1 and 2 above, and the detailed description of the second light protection layer 820 will be referred to the description relating to the light protection layer 820 in Figure 10 above.

[00106] Figure 12 is a schematic cross-sectional view. Petition 870250083186, dated 09 / 16 / 2025, page 26 / 53 21 / 22 of a display device according to an embodiment, and Figure 12 may be another cross-sectional view taken along line II' of Figure 1.

[00107] The display device in Figure 12 differs from the display device in Figure 2 described above by still including a 350 barrier, and the difference will be mainly described as follows.

[00108] As illustrated in Figure 12, at least one 350 barrier can be placed in the non-NDA display area of ​​the 100 base substrate. In plan view, the 350 barrier can have a closed curved shape that surrounds the DA display area.

[00109] The encapsulation layer 300 can be placed over the display elements 200 and the barrier 350.

[00110] Meanwhile, according to one embodiment, barrier 350 can be placed in the non-display NDA area to overlap the light protection layer 800 in the non-display NDA area of ​​the base substrate 100.

[00111] In the process of forming the encapsulation layer 300, the barrier 350 can prevent a material from the encapsulation layer 300 from permeating a PDA filling area of ​​the base substrate 100. For example, the encapsulation layer 300 may include a first inorganic layer, an organic layer, and a second inorganic layer stacked along the third direction DR1 on the base substrate 100, and the barrier 350 described above can prevent the raw material (e.g., a monomer) of an organic layer applied to the base substrate 100 from permeating the PDA filling area.

[00112] Those skilled in the art to which this specification refers will understand that this specification can be incorporated in other specific forms without altering the technical spirit or essential characteristics. Therefore, the embodiments described above should be understood as illustrative in all respects and not Petition 870250083186, dated 09 / 16 / 2025, page 27 / 53 22 / 22 as restrictive. The scope of this specification is defined by the claims described below rather than by the detailed description above, and all modifications or variations derived from the meaning, scope and equivalent concepts of the claims shall be interpreted as falling within the scope of this specification.

[00113] Meanwhile, the present specification and drawings describe preferred embodiments of the present specification and, although specific terms have been used, these are used in a general sense merely to facilitate the description of the technical content of the specification and to aid understanding of the invention, and are not intended to limit the scope of the specification. In addition to the embodiments described herein, it will be apparent to those skilled in the art that other modifications based on the technical idea of ​​the present specification may also be implemented. Petition 870250083186, dated 09 / 16 / 2025, p. 28 / 53

Claims

1 / 5 CLAIMS 1. Display device, characterized in that it comprises: a base substrate; a display element disposed on the base substrate in a display area; an encapsulation layer over the display element; and a light protection layer disposed over the encapsulation layer in a non-display area.

2. Display device according to claim 1, characterized in that the light protection layer is arranged along the edge of the upper surface of the base substrate and the edge of the upper surface of the encapsulation layer.

3. Display device according to claim 1, characterized in that, in plan view, the light protection layer surrounds at least one of the encapsulation layer, the display element and the display area of ​​the base substrate.

4. Display device according to claim 3, characterized in that, in plan view, the light protection layer has a closed curved shape surrounding at least one of the encapsulation layer, the display element and the display area of ​​the base substrate.

5. Display device according to claim 1, characterized in that, in a non-display area of ​​the base substrate, the light protection layer is arranged directly over the encapsulation layer.

6. Display device according to claim 5, characterized in that, in the non-display area of ​​the base substrate, the light protection layer is in contact with the encapsulation layer.

7. Display device according to claim 6, characterized in that the interface between the light-shielding layer and the encapsulation layer has a round shape.

8. Display device according to claim 1, characterized in that it further comprises an adhesive layer over the encapsulation layer and the light protection layer.

9. Display device according to claim 8, characterized in that it further comprises a touch detection unit disposed between the encapsulation layer and the adhesive layer, and also disposed between the encapsulation layer and the light protection layer.

10. Display device according to claim 9, characterized in that the light protection layer is in contact with the touch detection unit.

11. Display device according to claim 9, characterized in that it further comprises a first planar layer between the encapsulation layer and the touch detection unit.

12. Display device according to claim 9, characterized in that it further comprises a second planar layer between the touch detection unit and the adhesive layer, and also disposed between the touch detection unit and the light protection layer.

13. Display device according to claim 8, characterized in that it further comprises a protective substrate over the adhesive layer.

14. Display device according to claim 9, characterized in that it further comprises a polarization plate on the protective substrate. Petition 870250083186, dated 09 / 16 / 2025, page 30 / 53 3 / 5 15. Display device according to claim 14, characterized in that the light-protective layer is arranged over the protective substrate to overlap the edge of the encapsulation layer.

16. Display device according to claim 15, characterized in that the light-protective layer is disposed directly on the protective substrate.

17. Display device according to claim 15, characterized in that, in plan view, the light-protective layer surrounds the polarization plate.

18. Display device according to claim 15, characterized in that the light-protection layer comprises: a first light-protection layer disposed directly over the encapsulation layer; and a second light-protection layer disposed directly over the protective substrate to overlap the encapsulation layer.

19. Display device according to claim 1, characterized in that it further comprises a barrier disposed over the base substrate to overlap the light protection layer in the non-display area of ​​the base substrate.

20. Display device according to claim 19, characterized in that a portion of the encapsulation layer is disposed between the barrier and the light protection layer.

21. Display device according to claim 1, characterized in that the light-protective layer includes a black pigment or an organic black pigment.

22. Display device according to claim 1, characterized in that the light protection layer has a square ring shape with four sides.

23. Display device according to claim 22, characterized in that the four sides comprise: a first side adjacent to a filling area of ​​the base substrate; a second side arranged to face the first side; a third side connected to one end of the first side and to one end of the second side; and a fourth side arranged to face the third side and connected to the other end of the first side and to the other end of the second side.

24. Display device according to claim 23, characterized in that the width of the first side and the width of the second side are the same, and the width of the third side and the width of the third side are different.

25. A method for manufacturing a display device, characterized in that it comprises: placing a display element in a display area of ​​a base substrate; placing an encapsulation layer on the display element; and placing a light-protection layer over the encapsulation layer in a non-display area of ​​the base substrate.

26. Method according to claim 25, characterized in that the light protection layer is arranged along the edge of the upper surface of the base substrate and the edge of the upper surface of the encapsulation layer.

27. Method according to claim 25, characterized in that, in plan view, the light protection layer surrounds at least one of the encapsulation layers, the display element and the display area of ​​the base substrate.

28. Method according to claim 27, characterized in that, in plan view, the light protection layer has a closed curved shape that surrounds at least one of the encapsulation layer, the display element and the display area of ​​the base substrate.

29. Method according to claim 25, characterized in that, in the area without exposure of the base substrate, the light protection layer is arranged directly over the encapsulation layer.

30. Method according to claim 29, characterized in that, in the non-exposed area of ​​the base substrate, the light-protective layer is in contact with the encapsulation layer.

31. Method according to claim 30, characterized in that the interface between the light-shielding layer and the encapsulation layer has a round shape. Petition 870250083186, dated 09 / 16 / 2025, pp. 33 / 53

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