Display device

Abstract

Disclosed is a display device including: a display panel including a light emitting diode; a window layer disposed on the display panel; a light blocking member including a first light blocking portion disposed between the display panel and the window layer and a second light blocking portion disposed between the display panel and the first light blocking portion, and the second light blocking portion partially covering a lower surface of the first light blocking portion; and a dam disposed between the light blocking member and the display panel.

Description

TECHNICAL FIELD

[0001] The disclosure relates to a display device. More particularly, the disclosure relates to a display device providing visual information and a method of manufacturing a display device. BACKGROUND

[0002] In general, a display device includes a display area displaying an image and a peripheral area which is a non-display area surrounding the display area. Due to process needs or the like, the display device can have a structure in which a dam is formed in the peripheral area (or, if necessary, the display area). The dam can prevent an adhesive portion from overflowing outside of the display panel. Accordingly, the dam can be used to prevent the adhesive portion from overflowing. In other words, the dam must have a sufficient height to prevent the adhesive portion from overflowing.

[0003] In addition, the dam itself must not overflow beyond the display panel so that a user does not have a visual limitation when using the display device. Accordingly, research is being conducted to increase the height of the dam to prevent the adhesive portion from overflowing, and to increase the slope of the dam itself to prevent it from overflowing beyond the display panel. SUMMARY

[0004] An object of the disclosure is to provide a display device having improved display quality.

[0005] Another object of the disclosure is to provide a method of manufacturing a display device.

[0006] The display device according to an embodiment of the disclosure includes a display panel including a light emitting diode; a window layer disposed on the display panel; a light blocking member including a first light blocking portion and a second light blocking portion, the first light blocking portion being disposed between the display panel and the window layer, the second light blocking portion being disposed between the display panel and the first light blocking portion, and the second light blocking portion partially covering a lower surface of the first light blocking portion; and a dam disposed between the light blocking member and the display panel.

[0007] In an embodiment, the second light blocking portion can be disposed to contact the lower surface of the first light blocking portion.

[0008] In an embodiment, due to a difference between a width of the first light blocking portion and a width of the second light blocking portion, the light blocking member can have a step in a plan view.

[0009] In an embodiment, a thickness of the second light blocking portion can be about 6 μm to about 20 μm.

[0010] In an embodiment, a sum of the thickness of the second light blocking portion and a thickness of the dam can be about 50 μm to about 200 μm.

[0011] In an embodiment, an end portion of the second light blocking portion and an end portion of the display panel can coincide with each other in a plan view.

[0012] In an embodiment, an end of the second light blocking portion and an end of the dam can coincide with each other in a plan view.

[0013] In an embodiment, the dam can be disposed to contact a lower surface of the second light blocking portion, and the bank can be spaced apart from a lower surface of the first light blocking portion.

[0014] In an embodiment, the dam can completely cover the lower surface of the second light blocking portion.

[0015] In an embodiment, a lower surface of the second light blocking portion and an upper surface of the dam can have the same planar area in a plan view.

[0016] In an embodiment, the display device can further include an adhesive portion disposed between the display panel and the window layer.

[0017] In an embodiment, in a cross-sectional view, a lower surface of the dam and a lower surface of the adhesive portion can have the same level with respect to a lower surface of the window layer.

[0018] In an embodiment, the light blocking member can surround the adhesive portion in a plan view.

[0019] In an embodiment, the dam can surround the adhesive portion in a plan view.

[0020] In an embodiment, the dam and the adhesive portion can include the same material.

[0021] In an embodiment, the dam and the adhesive portion can be transparent

[0022] A method of manufacturing a display device according to an embodiment of the disclosure includes forming a first light blocking portion on a window layer, forming a second light blocking portion on the first light blocking portion, and the second light blocking portion partially covering a surface of the first light blocking portion, and forming a dam on the second light blocking portion.

[0023] In an embodiment, in forming the dam on the second light blocking portion, an end of the dam can be formed to coincide with an end of the second light blocking portion in a plan view.

[0024] In an embodiment, in forming the dam on the second light blocking portion, the dam can be formed to completely cover a lower surface of the second light blocking portion.

[0025] In an embodiment, in forming the dam on the second light blocking portion, the dam can be formed to contact a lower surface of the second light blocking portion, and the dam is spaced apart from a lower surface of the first light blocking portion.

[0026] A display device according to an embodiment of the disclosure includes a display panel including a light emitting diode; a window layer disposed on the display panel; a light blocking member including a first light blocking portion and a second light blocking portion, the first light blocking portion disposed between the display panel and the window layer, the second light blocking portion disposed between the display panel and the first light blocking portion, and the second light blocking portion partially covering a lower surface of the first light blocking portion; and a dam disposed between the light blocking member and the display panel.

[0027] Accordingly, since the second light blocking portion is disposed on the first light blocking portion, a thickness of the dam can be lower than a thickness when the second light blocking portion is not present. As the height of the dam is lowered, diffusion of the dam is minimized, and a lateral slope of the dam can be formed close to a perpendicular line. Accordingly, the dam can be formed not to diffuse beyond the light blocking member. Accordingly, the dam does not come into contact with the window layer, thereby providing an excellent visual experience to a user of the display device. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, together with the description, illustrate embodiments of the present disclosure and are incorporated in and constitute a part of the specification.

[0029] Figure 1 is a perspective view illustrating a display device according to an embodiment of the disclosure.

[0030] Figure 2 is Figure 1 a cross-sectional view of the display device of

[0031] Figure 3 is a cross-sectional view of Figure 2 a display panel of

[0032] Figure 4 is Figure 2 an enlarged cross-sectional view of portion A of

[0033] Figures 5 to 17 is a view illustrating a manufacturing method of a light blocking member and a dam for forming Figure 4 DETAILED DESCRIPTION

[0034] The illustrative, non-limiting embodiments will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, and by the examples described herein.

[0035] In this specification, a plane can be defined by a first direction D1 and a second direction D2 intersecting the first direction D1. For example, the second direction D2 can be perpendicular to the first direction D1. Further, a third direction D3 can be a normal direction of the plane. That is, the third direction D3 can be perpendicular to the plane formed by the first direction D1 and the second direction D2.

[0036] ​Figure 1 is a perspective view illustrating a display device according to an embodiment of the disclosure.

[0037] Referring to Figure 1 , the display device DD can include a display area DA and a peripheral area SA. The display area DA can be surrounded by the peripheral area SA.

[0038] The display area DA can be an area in which an image can be displayed by generating light or adjusting the transmittance of light provided from an external light source. The peripheral area SA can be an area in which an image is not displayed. However, embodiments of the disclosure are not limited thereto, and at least a portion of the peripheral area SA can display an image.

[0039] The display area DA can display a plurality of images IM. A user can receive information from the display device DD through the plurality of images IM.

[0040] Figure 2 is Figure 1 a cross-sectional view of the display device of

[0041] Referring to Figure 2 , the display device DD can include a cover film CF, a plate PT, a display panel DP, an adhesive portion AD, a light blocking member BM, a window layer WL, and a protection film PL.

[0042] The cover film CF can be disposed on the back of the display device DD to protect the display device DD from external impact. For example, the cover film CF can include at least one of polyurethane (PU) (e.g., thermoplastic polyurethane (TPU)), silicone, and polydimethylacrylamide (PDMA). These can be used individually or in combination with each other. However, embodiments of the disclosure are not limited thereto.

[0043] The plate PT can be disposed on the cover film CF. The plate PT can support the display panel DP and protect the display device DD from external impact. That is, even when a force is applied from the outside of the display device DD, the plate PT can maintain the display panel DP in a relatively flat state. The plate PT can include a rigid material or a semi-rigid material. For example, the plate PT can include at least one of iron, chromium, carbon, nickel, silicon, manganese, and molybdenum. These can be used individually or in combination with each other. However, embodiments of the disclosure are not limited thereto.

[0044] The display panel DP can be disposed on the plate PT. The display panel DP can receive an electrical signal and emit light so that the display device DD can provide visual information to a user. For example, the display panel DP can be an organic light emitting display panel or an inorganic light emitting display panel. However, embodiments of the disclosure are not limited thereto. The display panel DP will be described in detail later with reference to Figure 3 .

[0045] An adhesive portion AD can be disposed on the display panel DP. The adhesive portion AD can adhere the display panel DP and components disposed thereon. For example, the adhesive portion AD can adhere the window layer WL and the display panel DP. The adhesive portion AD can include a pressure sensitive adhesive (PSA), an optical clear adhesive (OCA), or an optical clear resin (OCR). However, embodiments of the disclosure are not limited thereto.

[0046] A light blocking member BM can be disposed on the adhesive portion AD. The light blocking member BM can provide a visual convenience to a user by blocking light from behind the display device DD. For example, the light blocking member BM can include a light absorbing material. For example, the light blocking member BM can include an inorganic black pigment or an organic black pigment. The inorganic black pigment can be carbon black. The organic black pigment can include at least one of a lactam black, a perylene black, and an aniline black. These can be used individually or in combination with each other. However, embodiments of the disclosure are not limited thereto. The light blocking member BM will be described later with reference to FIGS. 6A and 6B. Figure 4 The light blocking member BM is described in detail.

[0047] A window layer WL can be disposed on the adhesive portion AD. The window layer WL can include a substantially transparent material. For example, the window layer WL can be glass or plastic. However, embodiments of the disclosure are not limited thereto.

[0048] A protective film PL can be disposed on the window layer WL. The protective film PL can protect the window layer WL from impact, scratches, etc. The protective film PL can include a single layer structure and / or a multi-layer structure. For example, the protective film PL can include at least one of a base layer, a hard coat layer, a low refractive index layer, and an anti-fingerprint layer. However, embodiments of the disclosure are not limited thereto.

[0049] Figure 3 is a cross-sectional view illustrating a display panel of Figure 2 .

[0050] Referring to Figure 1 and Figure 3 , the display panel DP can include a substrate SUB, a buffer layer BUF, a gate insulating layer GI, a transistor TR, an interlayer insulating layer IL, a connection electrode CNE, a first via layer VIA1, a second via layer VIA2, a light emitting diode LED, a pixel definition layer PDL, and an encapsulation layer ENC.

[0051] The transistor TR can include an active layer ACT, a gate electrode GE, a source electrode SE, and a drain electrode DE. The light emitting diode LED can include a pixel electrode PE, a light emitting layer EL, and a common electrode CE.

[0052] The substrate SUB can include a glass substrate, a metal substrate, a plastic substrate, or the like. However, embodiments of the present disclosure are not limited thereto, and the substrate SUB can be an inorganic layer, an organic layer, or a composite material layer.

[0053] A buffer layer BUF can be provided on the substrate SUB. The buffer layer BUF can prevent impurities such as oxygen and moisture from penetrating into an upper portion of the substrate SUB. The buffer layer BUF can include an inorganic insulating material.

[0054] An active layer ACT can be provided on the buffer layer BUF. The active layer ACT can include an oxide semiconductor, a silicon semiconductor, an organic semiconductor, or the like. For example, the oxide semiconductor can include an oxide of a metal such as indium (In), gallium (Ga), tin (Sn), zirconium (Zr), vanadium (V), hafnium (Hf), cadmium (Cd), germanium (Ge), chromium (Cr), titanium (Ti), and zinc (Zn). The silicon semiconductor can include amorphous silicon, polysilicon, or the like. The active layer ACT can include a source region, a drain region, and a channel region provided between the source region and the drain region.

[0055] A gate insulating layer GI can be provided on the buffer layer BUF. Specifically, the gate insulating layer GI can cover the active layer ACT on the buffer layer BUF. The gate insulating layer GI can include an inorganic insulating material. In an embodiment, the gate insulating layer GI can be entirely formed in the display area DA and the peripheral area SA.

[0056] A gate electrode GE can be provided on the gate insulating layer GI. The gate electrode GE can at least partially overlap with the channel region of the active layer ACT. The gate electrode GE can include a conductive material such as a metal, an alloy, a conductive metal nitride, a conductive metal oxide, or a transparent conductive material. Examples of the conductive material which can be used in the gate electrode GE can include gold (Au), silver (Ag), aluminum (Al), platinum (Pt), nickel (Ni), titanium (Ti), palladium (Pd), magnesium (Mg), calcium (Ca), lithium (Li), chromium (Cr), tantalum (Ta), tungsten (W), copper (Cu), molybdenum (Mo), scandium (Sc), neodymium (Nd), iridium (Ir), an aluminum-containing alloy, a silver-containing alloy, a copper-containing alloy, a molybdenum-containing alloy, aluminum nitride (AlN), tungsten nitride (WN), titanium nitride (TiN), chromium nitride (CrN), tantalum nitride (TaN), strontium ruthenium oxide (SrRuO), zinc oxide (ZnO), indium tin oxide (ITO), tin oxide (SnO), indium oxide (InO), gallium oxide (GaO), indium zinc oxide (IZO), or the like. These can be used individually or in combination with each other. Optionally, the gate electrode GE can have a single-layer structure or a multi-layer structure including a plurality of conductive layers.

[0057] An interlayer insulating layer IL can be disposed on the gate electrode GE. Specifically, the interlayer insulating layer IL can be disposed on the gate insulating layer GI and cover the gate electrode GE on the gate insulating layer GI. The interlayer insulating layer IL can include an inorganic insulating material.

[0058] The source electrode SE and the drain electrode DE can be disposed on the interlayer insulating layer IL. Each of the source electrode SE and the drain electrode DE can be connected to the active layer ACT. For example, the source electrode SE can contact a source region of the active layer ACT, and the drain electrode DE can contact a drain region of the active layer ACT. Each of the source electrode SE and the drain electrode DE can include a conductive material. The active layer ACT, the gate electrode GE, the source electrode SE, and the drain electrode DE can form a transistor TR.

[0059] A first via layer VIA1 can be disposed on the source electrode SE and the drain electrode DE. Specifically, the first via layer VIA1 can be disposed on the interlayer insulating layer IL and cover the source electrode SE and the drain electrode DE on the interlayer insulating layer IL. The first via layer VIA1 can include an organic insulating material. In an embodiment, the first via layer VIA1 can be formed only in the display area DA and a portion of the peripheral area SA adjacent to the display area DA.

[0060] A connection electrode CNE can be disposed on the first via layer VIA1. The connection electrode CNE can transmit a signal transmitted from the transistor TR to the light emitting diode LED. The connection electrode CNE can include a metal, an alloy, a metal nitride, a conductive metal oxide, a transparent conductive material, or the like. These can be used individually or in combination with each other. However, embodiments of the disclosure are not limited thereto.

[0061] A second via layer VIA2 can be disposed on the connection electrode CNE. Specifically, the second via layer VIA2 can be disposed on the first via layer VIA1 and cover the connection electrode CNE. The second via layer VIA2 can include substantially the same material as the first via layer VIA1.

[0062] A pixel electrode PE can be disposed on the second via layer VIA2. The pixel electrode PE can include a conductive material. The pixel electrode PE can be connected to the drain electrode DE through the connection electrode CNE. Accordingly, the pixel electrode PE can be electrically connected to the transistor TR.

[0063] A pixel defining layer PDL can be disposed on the pixel electrode PE. For example, the pixel defining layer PDL can expose at least a portion of the pixel electrode PE. The pixel defining layer PDL can include an inorganic insulating material or an organic insulating material.

[0064] The light emitting layer EL can be disposed on the pixel electrode PE. Specifically, the light emitting layer EL can be disposed within an opening defined by the pixel defining layer PDL. That is, the light emitting layer EL can be surrounded by the pixel defining layer PDL. The light emitting layer EL can include at least one of an organic light emitting material and a quantum dot. However, embodiments of the disclosure are not limited thereto.

[0065] The common electrode CE can be disposed on the light emitting layer EL. The common electrode CE can also be disposed on the pixel defining layer PDL. That is, the common electrode CE can be continuously disposed on the light emitting layer EL and the pixel defining layer PDL. The common electrode CE can include a conductive material. The light emitting layer EL can emit light based on a voltage difference between the pixel electrode PE and the common electrode CE.

[0066] The encapsulation layer ENC can be disposed on the common electrode CE. The encapsulation layer ENC can include at least one inorganic encapsulation layer and at least one organic encapsulation layer. In an embodiment, the inorganic encapsulation layer and the organic encapsulation layer can be alternately disposed. For example, the organic encapsulation layer can include a cured polymer such as a polyacrylate resin, an epoxy resin, or a silicone resin. For example, the inorganic thin film can include silicon oxide, silicon nitride, silicon carbide, aluminum oxide, tantalum oxide, hafnium oxide, zirconium oxide, titanium oxide, etc.

[0067] Figure 4 is Figure 2 an enlarged sectional view of part A of

[0068] Referring to Figure 1 and Figure 4 , the light blocking member BM can include a first light blocking portion BM1 and a second light blocking portion BM2. Further, the display device DD can include a dam DAM between the second light blocking portion BM2 and the display panel DP.

[0069] The first light blocking portion BM1 can be disposed under the window layer WL. That is, the first light blocking portion BM1 can directly contact the window layer WL. The first light blocking portion BM1 can block light from the rear of the display device DD, thereby providing visual convenience to a user of the display device DD.

[0070] In an embodiment, a first thickness H1 of the first light blocking portion BM1 in the third direction D3 can be about 6 µm to about 20 µm. Preferably, the first thickness H1 of the first light blocking portion BM1 can be about 6 µm to about 15 µm. However, embodiments of the disclosure are not limited thereto.

[0071] The first light blocking portion BM1 can be disposed in the peripheral area SA of the display device DD. However, embodiments of the disclosure are not limited thereto. The first light blocking portion BM1 can be disposed in a part of the display area DA of the display device DD (e.g., close to a camera arrangement of the display device DD).

[0072] A second light-blocking portion BM2 can be disposed between the display panel DP and the first light-blocking portion BM1. The second light-blocking portion BM2 can be configured to contact the lower surface of the first light-blocking portion BM1. That is, the second light-blocking portion BM2 can be disposed on the surface of the first light-blocking portion BM1 in the direction opposite to the third direction D3. The second light-blocking portion BM2 can provide space in which the dam DAM is later disposed. The second light-blocking portion BM2 can comprise substantially the same material as the first light-blocking portion BM1.

[0073] In this embodiment, the second light-blocking portion BM2 may partially cover the lower surface of the first light-blocking portion BM1. Specifically, the planar area of ​​the second light-blocking portion BM2 may be smaller than the planar area of ​​the first light-blocking portion BM1. Since the second light-blocking portion BM2 partially covers the first light-blocking portion BM1, a step can be formed between the lower surfaces of the first light-blocking portion BM1 and the second light-blocking portion BM2 in the light-blocking member BM. That is, in a plan view, the light-blocking member BM may have a step due to the difference between the width of the first light-blocking portion BM1 and the width of the second light-blocking portion BM2.

[0074] The second thickness H2 of the second light-blocking portion BM2 can be from about 6 μm to about 20 μm. Preferably, the second thickness H2 of the second light-blocking portion BM2 can be from about 6 μm to about 15 μm. However, the embodiments of this disclosure are not limited thereto. By arranging the second thickness H2 of the second light-blocking portion BM2 to satisfy the above range, the third thickness H3 of the dam DAM can be reduced and the dam DAM can be non-diffuse and formed to have a vertical shape in the third direction D3.

[0075] In an embodiment, such as Figure 4 As shown, the end of the second light-blocking part BM2 can coincide with the end of the display panel DP in the plan view. Since the second light-blocking part BM2 provides space for the dam DAM to be disposed therein, in the plan view, when the end of the second light-blocking part BM2 coincides with the end of the display panel DP, the end of the dam DAM can coincide with the end of the display panel DP.

[0076] The dam DAM can be disposed between the light-blocking member BM and the display panel DP. The dam DAM can be disposed on the lower surface of the second light-blocking part BM2. That is, the dam DAM can be disposed on the surface of the second light-blocking part BM2 in the direction opposite to the third direction D3. The dam DAM can prevent the adhesive part AD from overflowing.

[0077] The dam DAM can comprise substantially the same material as the adhesive part AD. Both the dam DAM and the adhesive part AD can comprise transparent materials. Therefore, light emitted from the display device DD can be transmitted to the user without being blocked by the dam DAM and the adhesive part AD.

[0078] In this embodiment, the dam DAM can be hardened before the adhesive portion AD is applied, thereby preventing the adhesive portion AD from overflowing outside the display device DD. Therefore, in a cross-sectional view, the horizontal height of the lower surface of the dam DAM and the horizontal height of the lower surface of the adhesive portion AD relative to the lower surface of the window layer WL can be substantially the same.

[0079] In an embodiment, the sum of the second thickness H2 of the second light-blocking portion BM2 and the third thickness H3 of the dam DAM can be approximately 50 μm to approximately 200 μm. Preferably, the sum of the second thickness H2 of the second light-blocking portion BM2 and the third thickness H3 of the dam DAM can be approximately 50 μm to approximately 150 μm. The adhesive portion AD has a thickness of approximately 50 μm to approximately 200 μm on the third direction D3. In this case, since the sum of the second thickness H2 of the second light-blocking portion BM2 and the third thickness H3 of the dam DAM satisfies the above range, the adhesive portion AD can be formed so as not to overflow outside the display panel DP.

[0080] In an embodiment, such as Figure 4 As shown, the ends of the second light-blocking portion BM2 and the dam DAM can overlap in the plan view. That is, the dam DAM can completely cover the lower surface of the second light-blocking portion BM2. Specifically, the planar area of ​​the lower surface of the second light-blocking portion BM2 can be substantially the same as the planar area of ​​the upper surface of the dam DAM.

[0081] The dam DAM can be configured to contact the lower surface of the second light-blocking part BM2 and can be spaced apart from the lower surface of the first light-blocking part BM1. That is, the dam DAM can be configured to prevent the dam DAM from overflowing from the edge of the lower surface of the second light-blocking part BM2.

[0082] The adhesive portion AD can be disposed between the display panel DP and the window layer WL. The adhesive portion AD can be disposed in the display area DA of the display device DD. The adhesive portion AD can bond the display panel DP and the window layer WL. When the adhesive portion AD has a thickness of approximately 50 μm to approximately 200 μm in the third direction D3, the adhesive portion AD can have excellent bonding effect. Preferably, the adhesive portion AD can have a thickness of approximately 50 μm to approximately 150 μm in the third direction D3.

[0083] In a plan view, the adhesive portion AD can be surrounded by the dam DAM. Also, in a plan view, the adhesive portion AD can be surrounded by the light blocking member BM. Because the adhesive portion AD is surrounded by the dam DAM and the light blocking member BM in a plan view, the adhesive portion AD can not flow outside of the area bounded by the dam DAM and the light blocking member BM.

[0084] As shown in Figure 4 , because the second light blocking portion BM2 is disposed on the first light blocking portion BM1, and thus the third thickness H3 of the dam DAM can be lower than the thickness in the case where the second light blocking portion BM2 is not present. As the third thickness H3 of the dam DAM decreases, the diffusion of the dam DAM is minimized, and thus the lateral slope of the dam DAM can be formed close to a perpendicular line along the third direction D3. Thus, the dam DAM can be formed not to diffuse beyond the light blocking member BM. Therefore, the dam DAM does not contact the window layer WL, and thus an excellent visual experience can be provided to a user of the display device DD.

[0085] Figures 5 to 17 is a view showing a manufacturing method of a light blocking member and a dam for forming Figure 4 .

[0086] Referring to Figure 5 , Figure 6 and Figure 7 , the light blocking ink head BIH can apply the light blocking material PBM on the surface of the window layer WL. The light blocking material PBM can include a pressure sensitive adhesive (PSA), an optically clear adhesive (OCA), or an optically clear resin (OCR). However, embodiments of the present disclosure are not limited thereto.

[0087] The light blocking material PBM can be applied on the surface of the window layer WL and cured by the curing machine UV. The curing machine UV can use ultraviolet light to cure the light blocking material PBM. Curing the light blocking material PBM with the curing machine UV can form the first light blocking portion BM1.

[0088] Referring to Figure 8 , Figure 9 and Figure 10 , the light blocking ink head BIH can apply the light blocking material PBM on the surface of the first light blocking portion BM1. Specifically, the light blocking ink head BIH can apply the light blocking material PBM to partially cover the surface of the first light blocking portion BM1.

[0089] Applying the light blocking material PBM on the first light blocking portion BM1 and then curing the light blocking material PBM with the curing machine UV can form the second light blocking portion BM2.

[0090] Referring to Figure 11 , Figure 12 andFigure 13 The adhesive material PAD can be applied on the second light blocking part BM2 by the adhesive ink head DIH. The adhesive material PAD can be applied on the second light blocking part BM2 and not overflow the edge of the lower surface of the second light blocking part BM2 due to the surface tension. The adhesive material PAD can be applied while covering the lower surface of the second light blocking part BM2.

[0091] The application of the adhesive material PAD can form a semi-elliptical shape in a cross-sectional view. That is, the adhesive material PAD can have a shape protruding in a direction opposite to the third direction D3 to form a semi-elliptical shape. The adhesive material PAD can be cured by the curing machine UV.

[0092] The application and curing of the adhesive material PAD can form a dam DAM. The dam DAM can completely cover the lower surface of the second light blocking part BM2 without overflowing the edge of the lower surface of the second light blocking part BM2 due to the surface tension. Therefore, the end of the dam DAM and the end of the second light blocking part BM2 can coincide in a plan view. For this reason, the dam DAM can be formed in contact with the lower surface of the second light blocking part BM2 and spaced apart from the lower surface of the first light blocking part BM1.

[0093] Further referring to Figure 14 and Figure 15 The adhesive material PAD can be applied on the surface of the window layer WL by the adhesive ink head DIH. Specifically, the adhesive material PAD can be surrounded by the dam DAM and the light blocking member BM in a plan view and can be applied on the window layer WL in a direction opposite to the third direction D3. The adhesive material PAD can be formed as an adhesive part AD that attaches the display panel (e.g., the display panel DP of Figure 16 ) to the surface of the window layer WL.

[0094] The dam DAM and the adhesive part AD can have the same height. That is, the horizontal height of the lower surface of the dam DAM relative to the lower surface of the window layer WL and the horizontal height of the lower surface of the adhesive part AD relative to the lower surface of the window layer WL can be the same. Therefore, the display panel (e.g., the display panel DP in Figure 16 ) can contact the dam DAM and the adhesive part AD.

[0095] Further referring to Figure 16 and Figure 17 , the display panel DP can be attached to the adhesive part AD in a direction opposite to the third direction D3. Thereafter, the adhesive part AD is cured by the curing machine UV and can adhere the adhesive part AD and the display panel DP. Therefore, Figure 4 Part A of the display panel DP can be formed by the manufacturing process described with reference to Figures 5 to 17 .

[0096] The present disclosure can be applied to display devices and electronic devices including the same. For example, the present disclosure can be applied to high-resolution smartphones, mobile phones, smart pads, smart watches, tablet personal computers (PCs), vehicle navigation systems, televisions, computer monitors, laptop computers, etc.

[0097] While the present disclosure has been particularly shown and described with reference to embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details can be made therein without departing from the spirit or scope of the present disclosure as defined by the following claims.

Claims

1. A display device, characterized in that, The display device includes: Display panel, including light-emitting diodes; A window layer is provided on the display panel; Light blocking components, including: A first light-blocking portion is disposed between the display panel and the window layer; and A second light-blocking portion is disposed between the display panel and the first light-blocking portion, and the second light-blocking portion partially covers the lower surface of the first light-blocking portion; and a dam is disposed between the light-blocking member and the display panel.

2. The display device according to claim 1, characterized in that, The second light-blocking part is configured to contact the lower surface of the first light-blocking part.

3. The display device according to claim 2, characterized in that, In the plan view, the light blocking member has a step due to the difference between the width of the first light blocking part and the width of the second light blocking part.

4. The display device according to claim 1, characterized in that, The thickness of the second light-blocking portion is 6 μm to 20 μm.

5. The display device according to claim 1, characterized in that, The sum of the thickness of the second light-blocking part and the thickness of the dam is 50 μm to 200 μm.

6. The display device according to claim 1, characterized in that, The ends of the second light-blocking part and the ends of the dam coincide with each other in the plan view.

7. The display device according to claim 1, characterized in that, The lower surface of the second light-blocking part and the upper surface of the dam have the same planar area in the plan view.

8. The display device according to claim 1, characterized in that, The display device further includes: An adhesive portion is disposed between the display panel and the window layer.

9. The display device according to claim 8, characterized in that, In the cross-sectional view, the lower surface of the dam and the lower surface of the adhesive portion have the same horizontal height relative to the lower surface of the window layer.

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